Global System for Mobile Communications (GSM)

Nortel GSM BSS Performance
Management — Observation
Counters Fundamentals

...
Document status: Preliminary
Document version: 16.07
Document date: 13 October 2006
Copyright © 2006, Nortel Networks
All ...
3

Contents
New in this release
Features 7
Other changes 10
Release deltas for V16.0 10
Document restructuring 10
Observat...
4 Contents
1.5.1 Radio channel release 102
1.5.2 Connection release 109
1.6 SMS service 126
1.6.1 SMS established by the M...
Contents 5
1.10.24 Abnormal DL TBF Release: No final PDAN 210
1.10.25 Abnormal DL TBF Release (FULL Duplex): No final Packet...
6 Contents
B.1.5 PCUSN counters removed since 15.0.1 418
B.1.6 PCUSN counters renamed since 15.0.1 419
B.1.7 Synthetic cou...
7

New in this release
The following sections detail what’s new in the Nortel GSM BSS
Performance Management — Observation...
8 New in this release

— In Chapter 3, "Counters classes and observation types", the section
"PCUSN observation types" is ...
Features 9

•

QOS R97 End-of-Life (28817)
— This feature removes from the BSS the Nortel Rel,. 97 QoS
functionality intro...
10 New in this release

— This feature implements a power offset (above the Tx power
applicable for speech) to transmit th...
Other changes

11

Observation counters terminology
Beginning in V16, this document redefines the terms family and type for...
12 New in this release

Global System for Mobile Communications (GSM)
Nortel GSM BSS Performance Management — Observation ...
13

Introduction
This document, Nortel GSM BSS Performance Management — Observation
Counters Fundamentals, provides a form...
14 Introduction

Locating a BSS observation counter
The observation counters are documented in three separate observation
...
Locating a BSS observation counter

15

Guidelines for locating a BSS observation counter

Locating a counter by counter n...
16 Introduction

Global System for Mobile Communications (GSM)
Nortel GSM BSS Performance Management — Observation Counter...
17

Chapter 1
Observation counter incrementation
principles and data flow diagrams (DFD)
1.1 Radio resource allocation
1.1....
18 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

1.1.2 TCH (traffic channel) allocat...
1.2 Call setup 19

In the second case, a paging procedure precedes the immediate assignment
procedure.

1.2.1 Immediate as...
20 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

•

1191/4 and 1730 for cause 100

...
1.2 Call setup 21

Counter
number

Function

Counter name

1500

aTransparentUp

number of messages for the direct
transfe...
22 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Counter name

Func...
1.2 Call setup 23

1.2.3 Paging procedure
Data Flow Diagram: immediate assignment: paging procedure (normal
completion)

G...
24 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

(1) The following counters are inc...
1.2 Call setup 25

(2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling
mode. In this case, the fo...
26 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Function

Counter ...
1.2 Call setup 27

1.2.4 Immediate assignment procedure (failure cases)
1.2.4.1 No resource available (SDCCH)

List of the...
28 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

(1) The following counters are inc...
1.2 Call setup 29

List of the counters incremented during this procedure:
Counter
number

Function

Counter name

1161/2
...
30 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Function

Counter ...
1.2 Call setup 31

(2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling
mode. In this case, the fo...
32 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Counter name

Func...
1.2 Call setup 33

•

1191/7 for cause 111

(2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling
m...
34 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter name

Function

1746

tchF...
1.2 Call setup 35

(1) The following counters are incremented or decremented depending on
the cause value in the CHANNEL R...
36 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Function

Counter ...
1.2 Call setup 37

List of the counters incremented during this procedure:
Counter name

Function

1161/0

immediateAssign...
38 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Global System for Mobile Communica...
1.2 Call setup 39

(1) The following counters are incremented depending on the cause value in
the CHANNEL REQUIRED message...
40 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Counter name

Func...
1.2 Call setup 41

Counter name

Function

1611/2

tchFrAveragedUsedOverf
lowAllocationTrZoneMoy/
Max/Cum/Ech

average and...
42 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Counter name

Func...
1.2 Call setup 43

1.2.4.8 ERROR indication (connection failure)

Global System for Mobile Communications (GSM)
Nortel GSM...
44 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

(1) The following counters are inc...
1.2 Call setup 45

(3) ASCI counters are optional since they are related to the functionality of
the Global System for Mob...
46 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Function

Counter ...
1.2 Call setup 47

Counter
number
1623

Function

Counter name
rxLevDownLink
or

sum of downlink signal strength
measureme...
48 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number
1746

Function

Cou...
1.2 Call setup 49

Global System for Mobile Communications (GSM)
Nortel GSM BSS Performance Management — Observation Count...
50 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

(1) The following counters are inc...
1.2 Call setup 51

(4) ASCI counters are optional since they are related to the GSM-R
functionality.
List of the counters ...
52 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Function

Counter ...
1.2 Call setup 53

Counter
number
1623

Function

Counter name
rxLevDownLink
or
rxLevDownLinkTrZone

sum of downlink signa...
54 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number
1746

Function

Cou...
1.3 Dedicated channel assignment

55

(1) When a TCH resource is successfully allocated internally in the BSC
software, th...
56 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

•

1812 allocatedCircuitTsMoy/Max/...
1.3 Dedicated channel assignment

Counter
number

57

Function

Counter name

1095

tcAveragedUsedMoy/Ma
x/Cum//Ech

avera...
58 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number
1622

Function

Cou...
1.3 Dedicated channel assignment

Counter
number
1626

Function

Counter name
rxQualUpLink
or
rxQualUpLinkTrZone

59

sum ...
60 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number
1744

Function

Cou...
1.3 Dedicated channel assignment

61

List of counters incremented or decremented during this procedure:
Counter
number

C...
62 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Function

Counter ...
1.3 Dedicated channel assignment

63

(4) The Terrestrial Circuit is deallocated before sending an
ASSIGNMENT_FAILURE mess...
64 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Global System for Mobile Communica...
1.3 Dedicated channel assignment

65

(1) Downlink DTAP service is suspended.
(2) There are no TCH resources available. Do...
66 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

•

1611/0 tchFrAveragedUsedTchAllo...
1.3 Dedicated channel assignment

Counter
number

67

Function

Counter name

1049

attempedTchFrSeizures

number of TCH/F...
68 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter name

Function

1609/0

tc...
1.3 Dedicated channel assignment

Counter
number
1624

Function

Counter name
rxLevUpLink
or
rxLevUpLinkTrZone

69

sum of...
70 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Counter
number

Function

Counter ...
1.4 Handovers 71

Counter
number

Function

Counter name

1805

msPowerIncControl

number of MS increment
power controls o...
72 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

The ratios between the following c...
1.4 Handovers 73

— hoOutInterFailureXxx on TCH or SDCCH
— hoInInterUnsuccessXxx on TCH or SDCCH
— hoInInterFailureXxx on ...
74 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

Data Flow Diagram : intra-cell han...
1.4 Handovers 75

(1) A TCH resource is successfully allocated internally in the BSC software
on the target cell. Then the...
76 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD)

(3) When the STOP_MEASUREMENT mess...
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Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
Observation counter fundamentals411 9001-133.16.07
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Observation counter fundamentals411 9001-133.16.07

  1. 1. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 .
  2. 2. Document status: Preliminary Document version: 16.07 Document date: 13 October 2006 Copyright © 2006, Nortel Networks All Rights Reserved. Sourced in Canada and France The information contained in this document is the property of Nortel Networks. Except as specifically authorized in writing by Nortel Networks, the holder of this document shall keep the information contained herein confidential and shall protect same in whole or in part from disclosure and dissemination to third parties and use for evaluation, operation and maintenance purposes only. You may not reproduce, represent, or download through any means, the information contained herein in any way or in any form without prior written consent of Nortel Networks. The following are trademarks of Nortel Networks: *NORTEL NETWORKS, the NORTEL NETWORKS corporate logo, the NORTEL Globemark, UNIFIED NETWORKS, S2000, S4000, S8000. GSM is a trademark of France Telecom. All other trademarks are the property of their respective owners
  3. 3. 3 Contents New in this release Features 7 Other changes 10 Release deltas for V16.0 10 Document restructuring 10 Observation counters terminology 11 Changes in default and configurable observation types Updates to GSM-R counters 11 7 11 Introduction 13 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) 17 1.1 Radio resource allocation 17 1.1.1 SDCCH (stand-alone dedicated control channel) allocation request 17 1.1.2 TCH (traffic channel) allocation request in primo-allocation 18 1.1.3 TCH allocation request for traffic 18 1.2 Call setup 18 1.2.1 Immediate assignment procedure (normal completion) 19 1.2.2 Immediate assignment procedure with OTDI (normal completion) 22 1.2.3 Paging procedure 23 1.2.4 Immediate assignment procedure (failure cases) 27 1.3 Dedicated channel assignment 54 1.3.1 Nominal procedure 54 1.3.2 MODE MODIFY procedure 60 1.3.3 No resource available and queuing not activated 62 1.3.4 Queuing procedure (successful completion) 63 1.4 Handovers 71 1.4.1 Overview 71 1.4.2 Accounting principles 73 1.4.3 Intra-bts handover procedure 73 1.4.4 Inter cell intra-bss handover procedure (normal completion) 82 1.4.5 Inter-bss handover procedure 91 1.4.6 Directed retry handover procedure 100 1.5 Resource release 102 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  4. 4. 4 Contents 1.5.1 Radio channel release 102 1.5.2 Connection release 109 1.6 SMS service 126 1.6.1 SMS established by the MS 127 1.7 GPRS 129 1.7.1 Nominal procedure (in the case of Mobile Originating Call) 129 1.7.2 GPRS procedure: no resource available for a PDTCH preemption 140 1.7.3 GPRS procedure: negative acknowledgement by the PCU for a PDTCH preemption 143 1.7.4 Counter behavior when GPRS is activated 147 1.8 GPRS/EDGE Suspend and Resume 158 1.8.1 GPRS/EDGE Suspend procedure with RAU message (nominal procedure) 159 1.8.2 GPRS/EDGE Suspend procedure with RAU message (failure case) 160 1.8.3 GPRS/EDGE Suspend procedure with Resume message (nominal procedure) 162 1.8.4 GPRS/EDGE Suspend procedure with Resume message (failure case) 164 1.9 BSC equipment 165 1.9.1 CPUE overload 165 1.10 PCUSN 166 1.10.1 Flow control 166 1.10.2 LLC Discarded 167 1.10.3 UL TBF Establishment: Normal Completion 168 1.10.4 UL TBF Establishment: UL TBF Establishment during DL transfer 170 1.10.5 UL TBF Release: Normal Completion 171 1.10.6 Abnormal UL TBF Release: lossOfComNN0002 173 1.10.7 Abnormal UL TBF Release (FULL Duplex): LossOfComNN0002 175 1.10.8 Abnormal UL TBF Release: N3101 177 1.10.9 Abnormal UL TBF Release (FULL Duplex): N3101 179 1.10.10 Abnormal UL TBF Release: UP_NASSIGNMAX 181 1.10.11 Abnormal UL TBF Release (FULL Duplex): UP_NASSIGNMAX 184 1.10.12 Abnormal UL TBF Release: N3103 187 1.10.13 Abnormal UL TBF Release (FULL Duplex): N3103 188 1.10.14 DL TBF Establishment: MS in Standby State 191 1.10.15 DL TBF Establishment: MS in Ready State 193 1.10.16 DL TBF Establishment during UL transfer 195 1.10.17 DL TBF Release: Normal Completion 197 1.10.18 Abnormal DL TBF Release: lossOfComNN0002 198 1.10.19 Abnormal DL TBF Release (FULL Duplex): lossOfComNN0002 200 1.10.20 Abnormal DL TBF Release: N3105 203 1.10.21 Abnormal DL TBF Release (FULL Duplex): N3105 204 1.10.22 Abnormal DL TBF Release: DN_NASSIGNMAX 206 1.10.23 Abnormal DL TBF Release (FULL Duplex): DN_NASSIGNMAX 208 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  5. 5. Contents 5 1.10.24 Abnormal DL TBF Release: No final PDAN 210 1.10.25 Abnormal DL TBF Release (FULL Duplex): No final Packet Downlink Ack/Nack (PDAN) 212 1.10.26 Preemption of radio timeslots 214 1.10.27 Cell update: Packet Transfer 216 1.11 Advanced Speech Call Items (ASCI) (GSM-R) 219 Chapter 2 BSS observation management principles 2.1 2.2 2.3 2.4 2.5 2.6 Observation types (OGS, OFS, ORT, ODIAG, temporary) Observation management 224 Observation counter types (totalizer, value, load) 225 Customized counter names 227 Maximum number of counters 228 Mobility class sensitivity counters 232 223 223 Chapter 3 Counter classes and observation types 3.1 Raw permanent BSS counters default configuration 245 3.1.1 Raw counters configuration (all BSC) 246 3.1.2 Correspondence between BSC 12000 HC and BSC 3000 counters 3.2 Synthetic permanent BSS counters configuration 276 3.2.1 OFS and OGS synthetic counters in standard configuration 276 3.3 Raw Permanent PCUSN Observation Counters 279 3.3.1 PCUSN observation classes 279 3.3.2 PCUSN observation types 281 3.3.3 Throughput counters and satisfaction rate counters 299 245 275 Chapter 4 Counters families 305 Appendix A Monitoring dropped calls with observation counters 391 A.1 Strategies for using counters 1164/28 and 1164/32 391 A.1.1 Number of communications in traffic phase released: other cases (1164/28) 391 A.1.2 Number of communications in traffic phase released: TCU failure (1164/32) 395 A.2 BSC 3000/ TCU 3000 Notifications: triggering alarms with synthetic counters 398 A.2.1 How to trigger alarms using synthetic counters 398 How to modify alarm severity 399 A.2.2 Examples 400 Appendix B V16 release counters 403 B.1 Delta between 16.0 and 15.0.1 403 B.1.1 BSS counters added since 15.0.1 404 B.1.2 BSS counters removed since 15.0.1 414 B.1.3 BSS counters renamed since 15.0.1 416 B.1.4 PCUSN counters added since 15.0.1 417 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  6. 6. 6 Contents B.1.5 PCUSN counters removed since 15.0.1 418 B.1.6 PCUSN counters renamed since 15.0.1 419 B.1.7 Synthetic counter changes between 15.0.1 and 16.0 419 B.2 Delta between 16.0 and 15.1 419 B.2.1 BSS counters added since 15.1 420 B.2.2 BSS counters removed since 15.1 427 B.2.3 BSS counters renamed since 15.1 428 B.2.4 PCUSN counters added since 15.1 428 B.2.5 PCUSN counters removed since 15.1 429 B.2.6 PCUSN counters renamed since 15.1 430 B.2.7 Synthetic counter changes between 15.1 and 16.0 430 B.3 Delta between 16.0 and 15.1.1 430 B.3.1 BSS counters added since 15.1.1 431 B.3.2 BSS counters removed since 15.1.1 439 B.3.3 BSS counters renamed since 15.1.1 439 B.3.4 PCUSN counters added since 15.1.1 439 B.3.5 PCUSN counters removed since 15.1.1 441 B.3.6 PCUSN counters renamed since 15.1.1 442 B.3.7 Synthetic counters added since 15.1.1 442 B.3.8 Synthetic counters removed since 15.1.1 442 B.3.9 Synthetic counters changed since 15.1.1 442 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  7. 7. 7 New in this release The following sections detail what’s new in the Nortel GSM BSS Performance Management — Observation Counters Fundamentals, 411-9001-133 for release V16.0. • "Features" (page 7) • "Other changes" (page 10) Features See the following sections for information about feature changes: • Class 30/31 mobile support (28855) — This feature enables the PCUSN to support all the Release 5 mobile stations that use the High Multislot Classes, as defined in the 3GPP standards. — In Chapter 3, "Counters classes and observation types", the section "PCUSN observation types" is updated to include the new counter 15030/5. • EDGE monitoring improvement: performance degradation (27581) — This feature improves performance monitoring for GPRS/EDGE in the areas of: effect of the GPRS/EDGE multiplexing on EDGE DL throughput, GPRS/EDGE DL data blocks conveying GMM/SM signaling, TBF abnormal releases due to the Suspend procedures, and partitioning in the UL direction. — In Chapter 3, "Counters classes and observation types", the section "PCUSN observation types" is updated to include the new counters 15255/0, 15258/0, 15259/0, 15260/0, 15278/0, and 15279/0. Counter 15115/0 has been renamed. • Gb Throughput Monitoring – Frame Relay (26933) — This feature improves performance monitoring on the Gb interface in order to evaluate the effectiveness of a frame relay network and the frame relay bandwidth utilization. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  8. 8. 8 New in this release — In Chapter 3, "Counters classes and observation types", the section "PCUSN observation types" is updated to include the new counters 15300/0, 15301/0, 15302/0, 15303/0, 15304/0, 15305/0, 15306/0, 15307/0. • MS location (E911) in BSS based configuration (20365) — This feature implements a BSS-based location services (LCS) architecture. — Chapter 3, "Counters classes and observation types", is updated to include information about the new and updated counters. This feature adds a new screening for the Lb interface to the counters 1107, 1108, 1109 (1107/1, 1108/1, and 1109/1, respectively) and creates the new counters 2063/0, 2063/1, 2063/2, 2080, 2081, 2082/0, 2082/1, 2082/2, 2083/0, 2083/1, 2083/2, 2083/3, 2084/0, 2084/1, 2085/0, 2085/1, 2085/2, 2086/0, 2086/1, 2086/2, 2087/0, 2087/1, 2087/2, 2088/0, 2088/1, 2088/2. • Network Assisted Cell Change for release 4 MS (22859) — This feature implements improvements reduce the duration of cell re-selection through improvements to the cell change notification process in combination with network-assisted System Identification. — In Chapter 3, "Counters classes and observation types", the section "PCUSN observation types" is updated to include the counters 15256, 15257. • Packet Flow Context: GPRS/EDGE QoS Management Improvement (22860) — This feature describes a packet flow context (PFC) which implements a quality of service (QoS) architecture within the GSM access network; it replaces the Release 97 QoS implementation from BSS V14. — In Chapter 3, "Counters classes and observation types", the section "PCUSN observation types" is updated to include the counters 15263/0, 15264/0, 15265/0, 15266/0, 15267/0, 15268/0, 15269/0, 15270/0, 15271/0, 15272/0, 15274/0, 15276/0 • PCUSN LLC re-routing (26860) — This feature allows the SGSN to transfer LLC-PDUs from the old cell to the new cell when a mobile station undergoes a cell change from one cell to another in the same routing area. — In Chapter 3, "Counters classes and observation types", the section "PCUSN observation types" is updated to include the counters 15261/0 and 15262/0. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  9. 9. Features 9 • QOS R97 End-of-Life (28817) — This feature removes from the BSS the Nortel Rel,. 97 QoS functionality introduced in V14. Rel. 97 QoS is replaced by the QoS architecture introduced by the feature "Packet Flow Context: GPRS/EDGE QoS Management Improvement (22860)." — The following counters are deleted: 15029/1, 15029/2, 15029/3, 15029/4, 15077/0, 15077/1, 15077/2, 15077/3, 15078/0, 15078/1, 15078/2, 15078/3, 15079/0, 15079/1, 15079/2, 15079/3, 15031/4, 15034/1, 15062/2, 15060/1, 15061/1, 15062/3, 15062/4, and 15062/5. • RACH 7F filter at the BTS (32648) — This feature establishes a filter for the RACH that makes the BTS ignore request messages with an establishment cause code of 7F. The existing PCU counters no longer peg for the arrival of messages with code 7F, and a new counter is created specifically for tracking the number of decoded random access received by the BTS from the MS with the value 7F. — In Chapter 3, "Counters classes and observation types", applicable sections are updated to include the new counter 1615. • SAIC MS management Itf change V16 (29045) — This feature provides support for mobile stations that use Single Antenna Interference Cancellation (DARP phase I). — In Chapter 3, "Counters classes and observation types", applicable sections are updated to include the counter 2097. • TDMA Based Counters (15405) — This feature allows for the collection of performance data at the TDMA level which previously was available only on the level of TDMA class or cell. — In Chapter 2, "BSS Observation Management Principles", Section 2.6, "Mobility class sensitivity counters" is updated to reflect the new TDMA counters. Chapter 3, "Counters classes and observation types," is updated to include the new counters that report on performance data at the TDMA level. Information is added for new counters 1173, 1174, 1830–1833, 1844–1847, 1855, 1856, 1968, 1969, 2097, 2100–2125, 2138–2144, 2150–2161, 2165, 2166, 2167, 2170, and 2171. The table "Raw counters configuration (all BSC)" is also updated with all new counters introduced in this feature. • Tx Power Offset for Signalling Channels (30293) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  10. 10. 10 New in this release — This feature implements a power offset (above the Tx power applicable for speech) to transmit the signalling bursts, which increases the robustness of the signalling channels (FACCH and SACCH) in the downlink direction. — In Chapter 3, "Counters classes and observation types", applicable sections are updated to include the new counters 1839/10, 1839/11, 1839/12, 1839/13, 1840/10, 1840/11, 1840/12, 1840/13, 2188/0, and 2189/0. Other changes See the following sections for information about changes that are not feature-related: Release deltas for V16.0 A comprehensive summary of observation counter changes (counters added, deleted, or modified) between V16.0 and previous releases is provided in the appendix, V16 release counters. Document restructuring The existing counters reference document, BSS Observation Counters Dictionary, 411-9001-125, has been split into four separate documents: • This document (Nortel GSM BSS Performance Management — Observation Counters Fundamentals, 411-9001-133) contains all other reference information previously contained in the 411-9001-125. The counter definitions are now distributed among three documents, organizing counters by network node and counter family. There are now separate documents for counters measured at the OMC-R and PCUSN. Within the observation counters dictionary, counters are now arranged into chapters according to counter family. • Nortel GSM BSS Performance Management — Observation Counters Dictionary, 411-9001-125, contains formal definitions for each observation counter reported to the OMC-R by the BSC (including counters measured at the BTS). • Nortel GSM PCUSN Performance Management — Observation Counters Dictionary, 411-9001-211, contains formal definitions for each observation counter measured at the PCUSN. • Nortel GSM OMC-R Performance Management — Observation Counters Dictionary, 411-9001-212, contains formal definitions for each observation counter measured at the OMC-R. For more help with finding information about observation counters, see the "Introduction" chapter of this document. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  11. 11. Other changes 11 Observation counters terminology Beginning in V16, this document redefines the terms family and type for greater consistency with the way in which counters are used and presented at the OMC-R. • The category formerly called class has been renamed family. It indicates a related group of counters that describe events that reflect a common subset of GSM functionality, for example AMR or Inter-BSS handovers. The families have been redefined for better consistency with the OMC-R GUI. • The category formerly called type has been renamed class. This field specifies whether the counter is permanent or temporary, and whether the counter is raw or synthetic. Now that counters are organized by counter family in the observation counter dictionaries, the tables of counters by counter family have been removed from Chapter 3, "Counter class and observation types." This NTP now contains a new Chapter 4, "Counter families." This chapter consists of a table that allows the reader to find the counter family that an observation counter belongs to, and to identify the NTP that contains the dictionary entry for that counter. Changes in default and configurable observation types Effective in V16, the following counters are part of the ORT observation group: 1747, 1747, and 1829. Effective in V16, the following counters can be configured in the OGS observation group, but for the BSC 3000 only: 1839 (all screenings), 1840 (all screenings). The section, "Raw counters configuration (all BSC)," is updated accordingly. Updates to GSM-R counters In Chapter 2, "BSS Observation Management Principles", Section 2.6, "Mobility class sensitivity counters" is updated to reflect the new TDMA counters, and a new table lists counters applicable to 8W mobiles. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  12. 12. 12 New in this release Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  13. 13. 13 Introduction This document, Nortel GSM BSS Performance Management — Observation Counters Fundamentals, provides a formal description all observation counters from the GSM access network that are under the management of the OMC-R. This document also explains how to understand the observation counters in the context of the observation management framework of the OMC-R and how observation counters relate to different GSM call flow scenarios. Unless otherwise indicated, this information applies to: • Operating environments: GSM access network, GSM access network for railways (GSM-R access) Prerequisites • Nortel GSM BSS Overview, 411-9001-001 • Nortel GSM BSS Fundamentals — Operating Principles, 411-9001-007 • "Locating a BSS observation counter" (page 14) • Chapter 1 "Observation counter incrementation principles and data flow diagrams (DFD)" (page 17) • Chapter 2 "BSS observation management principles" (page 223) • Chapter 3 "Counter classes and observation types" (page 245) • Appendix "Monitoring dropped calls with observation counters" (page 391) • Appendix "V16 release counters" (page 403) Navigation Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  14. 14. 14 Introduction Locating a BSS observation counter The observation counters are documented in three separate observation counter dictionaries, according to the network node that reports the counter to the OMC-R. • Nortel GSM BSS Performance Management — Observation Counters Dictionary, 411-9001-125, contains formal definitions for each observation counter reported to the OMC-R by the BSC (including counters measured at the BTS). • Nortel GSM PCUSN Performance Management — Observation Counters Dictionary, 411-9001-211, contains formal definitions for each observation counter measured at the PCUSN. • Nortel GSM OMC-R Performance Management — Observation Counters Dictionary, 411-9001-212, contains formal definitions for each observation counter measured at the PCUSN. The following figure provides the user with guidelines for locating a BSS observation counter in the correct dictionary of counters. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  15. 15. Locating a BSS observation counter 15 Guidelines for locating a BSS observation counter Locating a counter by counter number Use the following table to identify which NTP to use to locate the definition of the counter when the counter number is known, but the counter name is not known. If the counter is in this range Look for it in this NTP 1000 to 7999 411-9001-125 8000 to 9999 411-9001-125 (synthetic counters) 15000 to 15999 411-9001-211 60000 and up 411-9001-212 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  16. 16. 16 Introduction Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  17. 17. 17 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) 1.1 Radio resource allocation 1.1.1 SDCCH (stand-alone dedicated control channel) allocation request Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  18. 18. 18 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) 1.1.2 TCH (traffic channel) allocation request in primo-allocation 1.1.3 TCH allocation request for traffic 1.2 Call setup Call setup is initiated by the mobiles (Mobile Originating Call setup) or the MSC (Mobile Terminating Call setup). Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  19. 19. 1.2 Call setup 19 In the second case, a paging procedure precedes the immediate assignment procedure. 1.2.1 Immediate assignment procedure (normal completion) Data Flow Diagram: immediate assignment procedure (normal completion) (1) The following counters are incremented depending on the cause value in the CHANNEL REQUIRED message: • 1191 cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  20. 20. 20 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 • 1191/7 for cause 111 (2) If no SDCCH is available, the base station controller (BSC) may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: 1744, 1746, 1609/2, 1611/2 List of the counters incremented during this procedure: Counter number Counter name Function 1104/0 sccpAllocated number of connections of the signalling connection control part (SCCP) for the subsystem number (SSN) of the base station subsystem management application part (BSSMAP) in the BSC 1105 sccpAveragedUsedMoy/ Max/Cum/Ech average number of SCCP connections established 1107 aInputMessage number of messages in the base station system application part (BSSAP) received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1191/n [n= 0 to 7] channelRequestCause Xxx number of channel allocation requests: Cause xxx 1192/n [n= 0 to 7] immediateAssignment SuccessCauseXxx number of successful immediate assignments: Cause xxx 1193/n [n= 0 to 3] estabIndicSignalling CauseXxx number of ESTABLISH INDICATION messages in establishment phase received for mobile originating calls: Cause xxx 1195 estabIndicSigPhaseI number of ESTABLISH INDICATION messages in establishment phase received for Phase I mobiles 1196 estabIndicSigPhaseII number of ESTABLISH INDICATION messages in establishment phase received for Phase I mobiles Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  21. 21. 1.2 Call setup 21 Counter number Function Counter name 1500 aTransparentUp number of messages for the direct transfer application part (DTAP) sent by the BSC to the MSC 1501 aTransparentDown number of DTAP messages received 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1606 sdcchAllocatedTrZone number of SDCCH allocated in the zone (concentric cell) 1607 sdcchAveragedUsedTr ZoneMoy/Max/Cum/Ech average number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflow AllocationTrZone number of full rate traffic channels (TCH/FR) allocated in the inner or outer zone of the cell because of SDCCH unavailability 1611/2 tchFrAveragedUsedOver flow AllocationTrZoneMoy/Ma x/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability 1629/0 channelActivateSignal lingFullRate number of Full Rate channels activated for signaling 1702 channelRequest Extended number of receipt of CHANNEL REQUIRED message with a timing advance greater than 63 1730 pagingResponse number of responses to paging requests in the cell 1744 tchFrAllocated number of TCH/FR or preempted packet data traffic channels (PDTCH) allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR or preempted PDTCH allocated in the inner or outer zone of the concentric cell tchFrAveragedUsedMoy/ Max/Cum/Ech average number of TCH/FR or preempted PDTCH used in the cell or or tchFrAveragedUsed TrZoneMoy/Max/Cum/Ec h average number of TCH/FR or preempted PDTCH used in the inner or outer zone of the cell 1746 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  22. 22. 22 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Counter name Function 1748 channelRequest number of channel allocation requests 1749 immediateAssignmentSu ccess number of successful immediate assignments 1750 estabIndicSignalling number of ESTABLISH INDICATION messages in establishment phase received 1.2.2 Immediate assignment procedure with OTDI (normal completion) This procedure used to establish group calls (voice call services, VCS, or voice group call services, VGCS) includes Originator To Dispatcher Information (OTDI) in the setup message. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  23. 23. 1.2 Call setup 23 1.2.3 Paging procedure Data Flow Diagram: immediate assignment: paging procedure (normal completion) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  24. 24. 24 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) (1) The following counters are incremented depending on the cause value in the CHANNEL REQUIRED message: • 1191/0 for cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 • 1191/7 for cause 111 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  25. 25. 1.2 Call setup 25 (2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: • 1744, 1746, 1609/2, 1611/2 List of the counters incremented during this procedure: Counter number Counter name Function 1104/0 sccpAllocated number of SCCP connections for SSN BSSMAP in the BSC 1105 sccpAveragedUsedMoy/ Max/Cum/Ech average number of SCCP connections established 1107 aInputMessage number of BSSAP messages received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1191/n [n= 0 to 7] channelRequestCause Xxx number of channel allocation requests: Cause xxx 1192/n [n= 0 to 7] immediateAssignment SuccessCauseXxx number of successful immediate assignments: Cause xxx 1193/n [n= 0 to 3] estabIndicSignalling CauseXxx number of ESTABLISH INDICATION messages in establishment phase received for mobile originating calls: Cause xxx 1195 estabIndicSigPhaseI number of ESTABLISH INDICATION messages in establishment phase received for Phase I mobiles 1196 estabIndicSigPhaseII number of ESTABLISH INDICATION messages in establishment phase received for Phase II mobiles 1500 aTransparentUp number of DTAP messages sent by the BSC to the mobile switching center (MSC) 1501 aTransparentDown number of DTAP messages received 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1503 aNonTransparentDown number of BSSMAP messages received by the BSC from the MSC Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  26. 26. 26 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Function Counter name 1606 sdcchAllocatedTrZone number of SDCCH allocated in the zone (concentric cell) 1607 sdcchAveragedUsed TrZoneMoy/Max/Cum/Ec h average number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflow AllocationTrZone number of TCH/FR allocated in the inner or outer zone of the cell because of SDCCH unavailability 1611/2 TchFrAveragedUsed OverflowAllocationTrZon eMoy/Max/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability 1629/0 channelActivateSignal lingFullRate number of Full Rate channels activated for signaling 1702 channelRequest Extended number of receipt of CHANNEL REQUIRED message with a timing advance greater than 63 1730 pagingResponse number of responses to paging requests in the cell 1744 tchFrAllocated number of TCH/FR or preempted PDTCH allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR or preempted PDTCH allocated in the inner or outer zone of the concentric cell tchFrAveragedUsedMoy/ Max/Cum/Ech average number of TCH/FR or preempted PDTCH used in the cell or or tchFrAveragedUsed TrZoneMoy/Max/Cum/Ec h average number of TCH/FR or preempted PDTCH used in the inner or outer zone of the cell 1748 channelRequest number of channel allocation requests 1749 immediateAssignment Success number of successful immediate assignments 1750 estabIndicSignalling number of ESTABLISH INDICATION messages in establishment phase received 1746 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  27. 27. 1.2 Call setup 27 1.2.4 Immediate assignment procedure (failure cases) 1.2.4.1 No resource available (SDCCH) List of the counters incremented during this procedure: Counter name Function 1161/1 immediateAssignmentRej ect RadioRes number of immediate assignments rejected for lack of radio resources 1191/0 channelRequestCause00 0 number of channel allocation requests: Cause 000 1608 sdcchResourceFailure TrZone number of SDCCH allocation failures due to lack of SDCCH in the inner and outer zone of the cell 1748 channelRequest number of channel allocation requests 1751 immediateAssignment Reject number of immediate assignments rejected Counter number 1.2.4.2 Negative reponse from the BTS Data Flow Diagram: immediate assignment failure procedure: negative response from base-station transceiver station (BTS) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  28. 28. 28 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) (1) The following counters are incremented depending on the cause value in the CHANNEL REQUIRED message: • 1191/0 for cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 • 1191/7 for cause 111 (2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: • 1744, 1746, 1609/2, 1611/2 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  29. 29. 1.2 Call setup 29 List of the counters incremented during this procedure: Counter number Function Counter name 1161/2 immediateAssignment RejectChanActNack number of immediate assignments rejected because a CHANNEL ACTIVATE NACK message is received 1191/n [n= 0 to 7] channelRequestCause Xxx number of channel allocation requests: Cause xxx 1606 sdcchAllocatedTrZone number of SDCCH allocation in the inner and outer zone of the cell 1607 sdcchAverageUsed TrZoneMoy/Max/Cum/Ec h average and maximum number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflow AllocationTrZone number of TCH/FR allocated in the inner or outer zone of the cell because of SDCCH unavailability 1611/2 tchFrAveragedUsed OverflowAllocationTrZon e Moy/Max/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability, obtained through internal sampling 1629/0 channelActivate SignallingFullRate number of Full Rate channels (SDCCH or TCH/FR) activated for signaling in the cell 1702 channelRequest Extended number of receipt of CHANNEL REQUIRED message with a timing advance greater than 63 1730 pagingResponse number of responses to paging requests in the cell 1744 tchFrAllocated number of TCH/FR allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR allocated in the inner or outer zone of the concentric cell tchFrAveragedUsedMoy/ Max/Cum/Ech average number of TCH/FR used in the inner or outer zone of the concentric cell 1746 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  30. 30. 30 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Function Counter name 1748 channelRequest number of channel allocation requests 1751 immediateAssignment Reject number of immediate assignments rejected 1.2.4.3 No response to CHANNEL ACTIVATE Data Flow Diagram: immediate assignment failure procedure: no response to CHANNEL ACTIVATE (1) The following counters are incremented depending on the cause value in the CHANNEL REQUIRED message: • 1191/0 for cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 • 1191/7 for cause 111 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  31. 31. 1.2 Call setup 31 (2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: • 1744, 1746, 1609/2, 1611/2 List of the counters incremented during this procedure: Counter number Function Counter name 1161/3 immediateAssignment RejectChanActTimmack number of immediate assignments rejected because of TimmAck time-out elapse 1191/n [n= 0 to 7] channelRequestCause Xxx number of channel allocation requests: Cause xxx 1606 sdcchAllocatedTrZone number of SDCCH allocation in the inner and outer zone of the cell 1607 sdcchAverageUsed TrZoneMoy/Max/Cum/Ec h average and maximum number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflow AllocationTrZone number of TCH/FR allocated in the inner or outer zone of the cell because of SDCCH unavailability 1611/2 tchFrAveragedUsed OverflowAllocationTrZon e Moy/Max/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability, obtained through internal sampling 1629/0 channelActivate SignallingFullRate number of Full Rate channels activated for signaling 1702 channelRequest Extended number of receipt of CHANNEL REQUIRED message with a timing advance greater than 63 1744 tchFrAllocated number of TCH/FR allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR allocated in the inner or outer zone of the concentric cell tchFrAveragedUsedMoy/ Max/Cum/Ech average number of TCH/FR used in the inner or outer zone of the concentric cell 1746 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  32. 32. 32 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Counter name Function 1748 channelRequest number of channel allocation requests 1751 immediateAssignment Reject number of immediate assignments rejected 1.2.4.4 Incorrect first L3 message Data Flow Diagram: immediate assignment failure procedure: timer T3101 expiry (1) The following counters are incremented depending on the cause value in the CHANNEL REQUIRED message: • 1191/0 for cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  33. 33. 1.2 Call setup 33 • 1191/7 for cause 111 (2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: • 1744, 1746, 1609/2, 1611/2 List of the counters incremented during this procedure: Counter number Function Counter name 1161/3 immediateAssignment RejectChanActTimmack number of immediate assignments rejected because of TimmAck time-out elapse 1191/n [n= 0 to 7] channelRequestCause Xxx number of channel allocation requests: Cause xxx 1192/n [n= 0 to 7] immediateAssignment SuccessCauseXxx number of immediate assignments with cause xxx satisfied 1606 sdcchAllocatedTrZone number of SDCCH allocation in the inner and outer zone of the cell 1607 sdcchAverageUsed TrZoneMoy/Max/Cum/Ec h average and maximum number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflow AllocationTrZone number of TCH/FR allocated in the inner or outer zone of the cell because of SDCCH unavailability 1611/2 tchFrAveragedUsed OverflowAllocationTrZon e Moy/Max/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability, obtained through internal sampling 1629/0 channelActivate SignallingFullRate number of Full Rate channels activated for signaling 1702 channelRequest Extended number of receipt of CHANNEL REQUIRED message with a timing advance greater than 63 1744 tchFrAllocated number of TCH/FR allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR allocated in the inner or outer zone of the concentric cell Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  34. 34. 34 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter name Function 1746 tchFrAveragedUsedMoy/ Max/Cum/Ech average number of TCH/FR used in the inner or outer zone of the concentric cell 1748 channelRequest number of channel allocation requests 1749 immediateAssignment Success number of immediate assignments satisfied Counter number 1.2.4.5 Timer 3101 expiry Data Flow Diagram: immediate assignment failure procedure: incorrect first L3 message Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  35. 35. 1.2 Call setup 35 (1) The following counters are incremented or decremented depending on the cause value in the CHANNEL REQUIRED message: • 1191/0 for cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 • 1191/7 for cause 111 (2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: • 1744, 1746, 1609/2, 1611/2 List of the counters incremented or decremented during this procedure: Counter name Function 1163/4 signallingReleaseBtsIncF irstL3 number of communications in signaling phase release because of incorrect First L3 message when a cell is associated with the communication 1191/n [n= 0 to 7] channelRequestCausexx x number of channel allocation requests: Cause xxx 1192/n [n= 0 to 7] immediateAssignmentSu ccessCausexxx number of immediate assignments with cause xxx satisfied 1606 sdcchAllocatedTrZone number of SDCCH allocation in the inner and outer zone of the cell 1607 sdcchAverageUsedTrZon eMoy/Max/Cum/Ech average and maximum number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflowAl locationTrZone number of TCH/FR allocated in the inner or outer zone of the cell because of SDCCH unavailability 1611/2 tchFrAveragedUsedOv erflowAllocationTrZone Moy/Max/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability, obtained through internal sampling Counter number Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  36. 36. 36 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Function Counter name 1629/0 channelActivateSignallin gFullRate number of Full Rate channels activated for signaling 1702 channelRequestExtende d number of receipt of CHANNEL REQUIRED message with a timing advance greater than 63 1744 tchFrAllocated number of TCH/FR allocated in the cell or tchFrAllocatedTrZone or number of TCH/FR allocated in the inner or outer zone of the concentric cell 1746 tchFrAveragedUsedMoy/ Max/Cum/Ech average number of TCH/FR used in the inner or outer zone of the concentric cell 1748 channelRequest number of channel allocation requests 1749 immediateAssignmentSu ccess number of immediate assignments satisfied 1753 signallingReleaseBts number of releases while the communication is in "signaling phase" and a cell associated to the communication 1778 signallingAbnormalRelea seCell number of abnormal releases while the communication is in "signaling phase" and a cell associated to the communication 1.2.4.6 Traffic with the MSC close Data Flow Diagram: immediate assignment failure procedure: traffic with the MSC closed Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  37. 37. 1.2 Call setup 37 List of the counters incremented during this procedure: Counter name Function 1161/0 immediateAssignmentRej ectTraffMsc number of immediate assignments rejected because the traffic with the MSC is interrupted 1191/0 channelRequestCause00 0 number of channel allocation requests: Cause 000 1608 sdcchResourceFailureTr Zone number of SDCCH allocation failures due to lack of SDCCH in the inner and outer zone of the cell 1748 channelRequest number of channel allocation requests 1751 immediateAssignmentRej ect number of immediate assignments rejected Counter number 1.2.4.7 CONNECTION FAILURE indication Data Flow Diagram: immediate assignment failure procedure: connection failure indication Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  38. 38. 38 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  39. 39. 1.2 Call setup 39 (1) The following counters are incremented depending on the cause value in the CHANNEL REQUIRED message: • 1191/0 for cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 • 1191/7 for cause 111 (2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: • 1744, 1746, 1609/2, 1611/2 List of the counters incremented or decremented during this procedure: Counter number 1044 Counter name signallingPhaseDuration Moy/Max/Cum/Ech Function average and maximum seizure of signaling channels expressed in milliseconds, calculated on all allocations lasting more than 25 milliseconds Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  40. 40. 40 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Counter name Function 1045 signallingPhaseDuration HighMoy/Max/Cum/Ech average and maximum seizure of signaling channels expressed in milliseconds, calculated on all allocations in the cell 1104/0 sccpAllocated number of SCCP connections for SSN BSSMAP in the BSC 1105 sccpAveragedUsedMoy/ Max/Cum/Ech average number of SCCP connections established 1107 aInputMessage number of BSSAP messages received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1191/n [n= 0 to 7] channelRequestCauseX xx number of channel allocation requests: Cause xxx 1192/n [n= 0 to 7] immediateAssignmentSu ccessCauseXxx number of successful immediate assignments: Cause xxx 1193/n [n= 0 to 3] estabIndicSignallingCau seXxx number of ESTABLISH INDICATION messages in establishment phase received for mobile originating calls: Cause Xxx 1195 estabIndicSigPhaseI number of ESTABLISH INDICATION messages in establishment phase received for Phase I mobiles 1196 estabIndicSigPhaseII number of ESTABLISH INDICATION messages in establishment phase received for Phase II mobiles 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1503 aNonTransparentDown number of BSSMAP messages sent by the MSC 1606 sdcchAllocatedTrZone number of SDCCH allocated in the zone (concentric cell) 1607 sdcchAveragedUsedTrZo neMoy/Max/Cum/Ech average number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflowAl locationTrZone number of TCH/FR allocated in the inner or outer zone of the cell because of SDCCH unavailability Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  41. 41. 1.2 Call setup 41 Counter name Function 1611/2 tchFrAveragedUsedOverf lowAllocationTrZoneMoy/ Max/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability 1629/0 channelActivateSignallin gFullRate number of Full Rate channels activated for signaling 1702 channelRequestExtende d number of receipt of CHANNEL REQUIRED message with a timing advance greater than 63 1730 pagingResponse number of responses to paging requests in the cell 1744 tchFrAllocated number of TCH/Fr or preempted PDTCH allocated in the cell Counter number or or tchFrAllocatedTrZone number of TCH/FR or preempted PDTCH allocated in the inner or outer zone of the concentric cell 1746 tchFrAveragedUsedMoy/ Max/Cum/Ech average number of TCH/FR or preempted PDTCH used in the cell or or tchFrAveragedUsedTrZo neMoy/Max/Cum/Ech average number of TCH/FR or preempted PDTCH used in the inner or outer zone of the cell 1748 ChannelRequest number of channel allocation requests 1749 ImmediateAssignmentSu ccess number of successful immediate assignments 1750 EstabIndicSignalling number of ESTABLISH INDICATION messages in establishment phase received Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  42. 42. 42 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Counter name Function 1753 signallingReleaseBts number of releases while the communication is in "signaling phase" and a cell associated to the communication 1778 signallingAbnormalRelea seCell number of abnormal releases while the communication is in "signaling phase" and a cell associated to the communication Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  43. 43. 1.2 Call setup 43 1.2.4.8 ERROR indication (connection failure) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  44. 44. 44 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) (1) The following counters are incremented depending on the cause value in the CHANNEL REQUIRED message: • 1191/0 for cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 • 1191/7 for cause 111 (2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: • 1744, 1746, 1609/2, 1611/2 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  45. 45. 1.2 Call setup 45 (3) ASCI counters are optional since they are related to the functionality of the Global System for Mobility, railways application (GSM-R). List of the counters incremented or decremented during this procedure: Counter number Counter name Function 1044 signallingPhaseDuration Moy/Max/Cum/Ech average and maximum seizure of signaling channels expressed in milliseconds, calculated on all allocations lasting more than 25 milliseconds 1045 signallingPhaseDuration HighMoy/Max/Cum/Ech average and maximum seizure of signaling channels expressed in milliseconds, calculated on all allocations in the cell 1104/0 sccpAllocated number of SCCP connections for SSN BSSMAP in the BSC 1105 sccpAveragedUsedMoy/ Max/Cum/Ech average number of SCCP connections established 1107 aInputMessage number of BSSAP messages received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1163/18 signallingReleaseBtsErro rIndDm number of communications in signaling phase released because of DM frames received in established multiframe mode when a cell is associated to the communication 1191/n [n= 0 to 7] channelRequestCauseX xx number of channel allocation requests: Cause xxx 1192/n [n= 0 to 7] immediateAssignmentSu ccessCauseXxx number of successful immediate assignments: Cause xxx 1193/n [n= 0 to 3] estabIndicSignallingCau seXxx number of ESTABLISH INDICATION messages in establishment phase received for mobile originating calls: Cause Xxx 1195 estabIndicSigPhaseI number of ESTABLISH INDICATION messages in establishment phase received for Phase I mobiles Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  46. 46. 46 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Function Counter name 1196 estabIndicSigPhaseII number of ESTABLISH INDICATION messages in establishment phase received for Phase II mobiles 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1503 aNonTransparentDown number of BSSMAP messages sent by the MSC 1601 downlinkPowerCtrlMaxS dcchMoy/Max/Cum/Ech duration of maximum downlink power use on busy SDCCHs 1602 uplinkPowerCtrlMaxSdcc hMoy/Max/Cum/Ech duration of maximum uplink power use on busy SDCCHs 1603 connectionDurationSdcc hMoy/ Max/Cum/Ech connection duration of SDCCHs (concentric cell) or or connectionDurat ionSdcchTrZone Moy/Max/Cum/Ech connection duration of SDCCHs (non-concentric cell) 1606 sdcchAllocatedTrZone number of SDCCHs allocated in the inner or outer zone of the cell 1607 sdcchAveragedUsedTrZo neMoy/Max/Cum/Ech average number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflowAl locationTrZone number of TCH/FR allocated in the inner or outer zone of the cell because of SDCCH unavailability 1611/2 tchFrAveragedUsedOv erflowAllocationTrZone Moy/Max/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability 1622 msLostMeasurements number of measurement messages of the mobile station (MS) not received by the cell or or msLostMeasurementsTr Zone number of MS measurement messages not received by the inner or outer zone of the cell Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  47. 47. 1.2 Call setup 47 Counter number 1623 Function Counter name rxLevDownLink or sum of downlink signal strength measurements received on the cell or rxLevDownLinkTrZone sum of downlink signal strength measurements received on the inner or outer zone of the cell 1624 rxLevUpLink or sum of uplink signal strength measurements received on the cell or rxLevUpLinkTrZone sum of uplink signal strength measurements received on the inner or outer zone of the cell 1625 rxQualDownLink sum of downlink signal quality measurements on the cell or or rxQualDownLinkTrZone 1626 sum of downlink signal quality measurements on the inner or outer zone of the cell rxQualUpLink sum of uplink signal quality measurements on the cell or or rxQualUpLinkTrZone sum of uplink signal quality measurements on the inner or outer zone of the cell 1744 tchFrAllocated number of TCH/Fr or preempted PDTCH allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR or preempted PDTCH allocated in the inner or outer zone of the concentric cell Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  48. 48. 48 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number 1746 Function Counter name tchFrAveragedUsedMoy/ Max/ Cum/Ech average number of TCH/FR or preempted PDTCH used in the cell or or tchFrAveragedUsedTrZo neMo y/Max/Cum/Ech average number of TCH/FR or preempted PDTCH used in the inner or outer zone of the cell 1748 ChannelRequest number of channel allocation requests 1749 immediateAssignmentSu ccess number of successful immediate assignments 1750 estabIndicSignalling number of ESTABLISH INDICATION messages in establishment phase received 1753 signallingReleaseBts number of releases while the communication is in "signalling phase" and a cell associated to the communication 1778 signallingAbnormalRelea seCell number of abnormal releases while the communication is in "signalling phase" and a cell associated to the communication 1805 msPowerIncControl number of MS increment power controls ordered by the Layer 1 management 1806 msPowerDecControl number of MS decrement power controls ordered by the Layer 1 management 1807 bsPowerIncControl number of BS increment power controls ordered by the Layer 1 management 1808 bsPowerDecControl number of BS decrement power controls ordered by the Layer 1 management 1.2.4.9 Rejection from the MSC Data Flow Diagram: immediate assignment failure procedure: rejection from the MSC Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  49. 49. 1.2 Call setup 49 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  50. 50. 50 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) (1) The following counters are incremented depending on the cause value in the CHANNEL REQUIRED message: • 1191/0 for cause 000 • 1191/1 and 1730 for cause 001 • 1191/2 for cause 010 • 1191/3 for cause 011 • 1191/4 and 1730 for cause 100 • 1191/5 for cause 101 • 1191/6 for cause 110 • 1191/7 for cause 111 (2) If no SDCCH is available, the BSC may try to allocate a TCH in signaling mode. In this case, the following counters are incremented: • 1744, 1746, 1609/2, 1611/2 (3) DTAP service is now open Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  51. 51. 1.2 Call setup 51 (4) ASCI counters are optional since they are related to the GSM-R functionality. List of the counters incremented or decremented during this procedure: Counter number Counter name Function 1044 signallingPhaseDuration Moy/Max/Cum/Ech average and maximum seizure of signaling channels expressed in milliseconds, calculated on all allocations lasting more than 25 milliseconds 1045 signallingPhaseDuration HighMoy/Max/Cum/Ech average and maximum seizure of signaling channels expressed in milliseconds, calculated on all allocations in the cell 1104/0 sccpAllocated number of SCCP connections for SSN BSSMAP in the BSC 1105 sccpAveragedUsedMoy/ Max/Cum/Ech average number of SCCP connections established 1107 aInputMessage number of BSSAP messages received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1163/20 signallingReleaseBtsCle arCommand number of communications in signaling phase released because of CLEAR COMMAND received when a cell is associated to the communication 1191/n [n= 0 to 7] channelRequestCauseX xx number of channel allocation requests: Cause xxx 1192/n [n= 0 to 7] immediateAssignmentSu ccessCauseXxx number of successful immediate assignments: Cause xxx 1193/n [n= 0 to 3] estabIndicSignallingCau seXxx number of ESTABLISH INDICATION messages in establishment phase received for mobile originating calls: Cause Xxx 1195 estabIndicSigPhaseI number of ESTABLISH INDICATION messages in establishment phase received for Phase I mobiles Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  52. 52. 52 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Function Counter name 1196 estabIndicSigPhaseII number of ESTABLISH INDICATION messages in establishment phase received for Phase II mobiles 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1503 aNonTransparentDown number of BSSMAP messages sent by the MSC 1601 downlinkPowerCtrlMaxS dcchMoy/Max/Cum/Ech duration of maximum downlink power use on busy SDCCHs 1602 uplinkPowerCtrlMaxSdcc hMoy/Max/Cum/Ech duration of maximum uplink power use on busy SDCCHs 1603 connectionDurationSdcc hMoy/ Max/Cum/Ech connection duration of SDCCHs (concentric cell) or or connectionDura tionSdcchTrZo neMoy/Max/Cum/Ech connection duration of SDCCHs (non-concentric cell) 1606 sdcchAllocatedTrZone number of SDCCHs allocated in the inner or outer zone of the cell 1607 sdcchAveragedUsedTrZo neMoy/Max/Cum/Ech average number of SDCCHs used in the inner or outer zone of the cell 1609/2 tchFrAllocatedOverflowAl locationTrZone number of TCH/FR allocated in the inner or outer zone of the cell because of SDCCH unavailability 1611/2 tchFrAveragedUsedOverf lowAllocationTrZoneMoy/ Max/Cum/Ech average and maximum number of TCH/FR used in the inner or outer zone of the cell because of SDCCH unavailability 1622 msLostMeasurements number of MS measurement messages not received by the cell or or msLostMeasurementsTr Zone number of MS measurement messages not received by the inner or outer zone of the cell Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  53. 53. 1.2 Call setup 53 Counter number 1623 Function Counter name rxLevDownLink or rxLevDownLinkTrZone sum of downlink signal strength measurements received on the cell or sum of downlink signal strength measurements received on the inner or outer zone of the cell 1624 rxLevUpLink or rxLevUpLinkTrZone sum of uplink signal strength measurements received on the cell or sum of uplink signal strength measurements received on the inner or outer zone of the cell 1625 sum of downlink signal quality measurements on the cell or or rxQualDownLinkTrZone 1626 rxQualDownLink sum of downlink signal quality measurements on the inner or outer zone of the cell rxQualUpLink sum of uplink signal quality measurements on the cell or or rxQualUpLinkTrZone sum of uplink signal quality measurements on the inner or outer zone of the cell 1744 tchFrAllocated number of TCH/Fr or preempted PDTCH allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR or preempted PDTCH allocated in the inner or outer zone of the concentric cell Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  54. 54. 54 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number 1746 Function Counter name tchFrAveragedUsedMoy/ Max/ Cum/Ech average number of TCH/FR or preempted PDTCH used in the cell or or tchFrAveragedUsedTrZo neMoy/ Max/Cum/Ech average number of TCH/FR or preempted PDTCH used in the inner or outer zone of the cell 1748 ChannelRequest number of channel allocation requests 1749 immediateAssignmentSu ccess number of successful immediate assignments 1750 estabIndicSignalling number of ESTABLISH INDICATION messages in establishment phase received 1753 signallingReleaseBts number of releases while the communication is in "signaling phase" and a cell associated to the communication 1.3 Dedicated channel assignment Dedicated channel assignment procedures are used to modify previous radio channel assignments. 1.3.1 Nominal procedure This procedure is used to modify a channel type (change from SDCCH to TCH or change of transmission mode) or to process handover requests. Data Flow Diagram: dedicated channel assignment procedure (a MS switching from an SDCCH to a TCH for service). Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  55. 55. 1.3 Dedicated channel assignment 55 (1) When a TCH resource is successfully allocated internally in the BSC software, the following counters are incremented: • 1609/0 tchFrAllocatedTchAllocation (number of TCH/FR allocated for traffic in the inner or outer zone of the cell) • 1611/0 tchFrAveragedUsedTchAllocationMoy/Max/Cum/Ech (average number of TCH/FR used for traffic in the inner or outer zone of the cell) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  56. 56. 56 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) • 1812 allocatedCircuitTsMoy/Max/Cum/Ech (number of time slot, or TS, allocations for traffic on circuit mode in the cell or allocatedCircuitTsTrZoneMoy/Max/Cum/Ech (number of TS allocations for traffic on circuit mode in the inner or the outer of the cell (2) The counter incremented depends on the channel mode used (speech or data): • either 1197/0 (FR) or 1197/1 (enhanced full rate, EFR) for speech • or 1709 and 1705/n (n=0 to 6) for transparent data • or 1710 and 1707/n (n=0 to 2) for non-transparent data (3) When the ASSIGNMENT_COMMAND message is received, 1049 attemptedTchFrSeizures (number of TCH/FR assignment requests) is incremented and, if the MS is the dualband type, 1715 attempted TchFrSeizuresMsDualdb is also incremented. (4) When the STOP_MEASUREMENT message for the SDCCH channel is received, if the BTS reports measurement counters, the BSC increments 1601, 1602, 1603, 1622, 1623, 1624, 1625, 1626, 1804, 1805, 1806, 1807 and 1808. (5) The old (SDCCH) channel is released. 1050 successfulTchFrSeizures is incremented and, if the MS is the dualband type, 1716 successfulTchFrSeizuresMsDualb is also incremented. (6) When the old (SDCCH) channel has been released, 1607 counting the average number of SDCCH used in the inner or outer zone of the cell is decremented. List of counters incremented or decremented during this procedure: Counter number Counter name Function 1044 signallingPhaseDuration Moy/Max/Cum/Ech average time of a signaling channel seizure 1045 signallingPhaseDuration HighMoy/Max/Cum/Ech average time of a signaling channel seizure > 25s 1049 attempedTchFrSeizures number of TCH/FR assignment requests 1050 successfulTchFrSeizures number of TCH/FR successfully assigned 1094 tcAllocated number of terrestrial circuits allocated Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  57. 57. 1.3 Dedicated channel assignment Counter number 57 Function Counter name 1095 tcAveragedUsedMoy/Ma x/Cum//Ech average number of terrestrial circuits used 1107 aInputMessage number of BSSAP messages received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1197/0 channelActivateSpeechF ullRate number of channels activated for speech: Full Rate algorithm 1197/1 channelActivateSpeechE nhancedFullRate number of channels activated for speech: Enhanced Full Rate algorithm 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1503 aNonTransparentDown number of BSSMAP messages received by the BSC 1601 downlinkPowerCtrlMaxS dcchMoy/Max/Cum/Ech duration of maximum downlink power use on busy SDCCHs 1602 uplinkPowerCtrlMaxSdcc hMoy/Max/Cum/Ech duration of maximum uplink power use on busy SDCCHs 1603 connectionDurationSdcc hMoy/Max/Cum/Ech connection duration of SDCCHs (concentric cell) or or connectionDurationSdcc hTrZoneMoy/Max/Cum/E ch connection duration of SDCCHs (non-concentric cell) 1607 sdcchAveragedUsedTrZo neMoy/Max/Cum/Ech average number of SDCCHs used in the inner or outer zone of the cell 1609/0 tchFrAllocatedTchAllocati onTrZone number of TCH/FR or preempted PDTCH allocated for traffic in the inner of outer zone of the cell 1611/0 tchFrAveragedUsedTchA llocation TrZoneMoy/Max /Cum/Ech average number of TCH/FR or preempted PDTCH used for traffic in the inner or outer zone of the cell Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  58. 58. 58 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number 1622 Function Counter name msLostMeasurements or msLostMeasurementsTr Zone number of MS measurement messages not received (non-concentric cell) or number of MS measurement messages not received (concentric cell) 1623 rxLevDownLink or rxLevDownLinkTrZone sum of downlink signal strength measurements received (nonconcentric cell) or sum of downlink signal strength measurements received (concentric cell) 1624 rxLevUpLink or rxLevUpLinkTrZone sum of uplink signal strength measurements received (nonconcentric cell) or sum of uplink signal strength measurements received (concentric cell) 1625 rxQualDownLink sum of downlink signal quality measurements (concentric cell) or or rxQualDownLinkTrZone sum of downlink signal quality measurements (non-concentric cell) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  59. 59. 1.3 Dedicated channel assignment Counter number 1626 Function Counter name rxQualUpLink or rxQualUpLinkTrZone 59 sum of uplink signal quality measurements (non-concentric cell) or sum of uplink signal quality measurements (concentric cell) 1629/0 channelActivateSignallin gFullRate number of Full-Rate channels activated for signaling 1629/1 channelActivateSignallin gEnhancedFullRate number of Enhanced-Full-Rate channels activated for signaling 1705/n (n = 0 to 6) channelActivateTchFrDat aTx (x = 16 to 14400 b/s) number of TCH/FR activation for transparent data service with a transmission rate = x 1707/n (n = 0 to 2) channelActivateTchFrDat aNTx (x = 6 to 14500 b/s) number of TCH/FR activation for non transparent data service with a transmission rate = x 1710 channelActivateTchFrND ataNTHscsd number of channel activation for non transparent data service on TCH/FR 1715 attemptedTchFrSeizures MsDualb number of attempts of assignation of a TCH/FR for dualband mobiles 1716 successfulTchFrSeizures MsDualb number of successful TCH/FR assignations for dualband mobiles 1717 abisTrauFrameDlReceiv ed number of frames TRAU (transcoder and rate adaptation unit) downlink received 1718 abisTrauFrameDlCorrect ed number of frames TRAU downlink corrected 1719 abisTrauFrameDlMuted number of frames TRAU downlink that can not be corrected 1720 radioFrameUlReceived number of radio frames uplink received 1721 ECU_Activation number of erroneous frames (error concealment unit, or ECU, may be activated or not) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  60. 60. 60 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number 1744 Function Counter name tchFrAllocated number of TCH/FR or preempted PDTCH allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR or preempted PDTCH allocated in the inner or outer zone of the concentric cell 1746 tchFrAveragedUsedMoy/ Max/Cum/Ech average number of TCH/FR or preempted PDTCH used in the cell or or tchFrAveragedUsedTrZo neMoy/ Max/Cum/Ech 1812 allocatedCircuitTsMoy average number of TCH/FR or preempted PDTCH used in the inner or outer zone of the cell number of TS allocations for traffic in circuit mode in the cell or or allocatedCircuitTsTrZone Moy 1841/0 assignRequestSdcchToT chChannel number of TS allocations for traffic in circuit mode in the inner or the outer zone of the concentric cell number of assignment request messages received: modification from an SDCCH channel to a TCH channel 1.3.2 MODE MODIFY procedure This procedure is used to modify the coding/decoding/transcoding mode on the dedicated cell channels used for sending speech or data. It is also used when the MS initiates a call re-establishment request. In this case, the BSC allocates a TCH for signaling and may use this particular procedure to accomplish the transition from signaling to speech mode rather than the general procedure which is much longer. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  61. 61. 1.3 Dedicated channel assignment 61 List of counters incremented or decremented during this procedure: Counter number Counter name Function 1044 signallingPhaseDuration Moy/Max/Cum/Ech average time of a signaling channel seizure 1045 signallingPhaseDuration HighMoy/Max/Cum/Ech average time of a signaling channel seizure > 25s 1094 tcAllocated number of terrestrial circuits allocated 1095 tcAveragedUsedMoy/Ma x/Cum/Ech average number of terrestrial circuits used 1107 aInputMessage number of BSSAP messages received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1197/0 channelActivateSpeechF ullRate number of channels activated for speech: Full Rate algorithm Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  62. 62. 62 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Function Counter name 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1503 aNonTransparentDown number of BSSMAP messages received by the BSC 1841/0 assignRequestSdcchToT chChannel number of assignment request messages received: modification from an SDCCH channel to a TCH channel 1.3.3 No resource available and queuing not activated The terrestrial circuit allocation is engaged before the radio resource allocation. If the radio resource allocation fails because of radio resource shortage, the TCH-FR-RESOURCE-FAILURE observation point is incremented. The cause value is one of the following: • "BSS not equipped" • "requested terrestrial resource unavailable" • "terrestrial resource already allocated" • "no radio resource available" Data Flow Diagram: dedicated channel assignment procedure (no resource available and queuing not activated). (1) Downlink DTAP service is suspended. (2) The Terrestrial Circuit is allocated before sending a request to allocator. (3) The request for a radio resource is rejected. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  63. 63. 1.3 Dedicated channel assignment 63 (4) The Terrestrial Circuit is deallocated before sending an ASSIGNMENT_FAILURE message. (5) Downlink DTAP service is resumed. List of counters incremented or decremented during this procedure: Counter number Function Counter name 1094 tcAllocated number of terrestrial circuits allocated 1095 tcAveragedUsedMoy/Max/C um//Ech average number of terrestrial circuits used 1107 aInputMessage number of BSSAP messages received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1503 aNonTransparentDown number of BSSMAP messages received by the BSC 1613 tchFrResourceFailureTrZone number of TCH/FR and preemptable PDTCH allocation failures in the inner or outer zone of the cell 1841/0 assignRequestSdcchToTchChannel number of assignment request messages received: modification from an SDCCH channel to a TCH channel 1842/0 assignFailureSdcchToTch-C hannel number of emission of ASSIGNMENT FAILURE messages on the A interface: modification from an SDCCH channel to a TCH channel or a preempted PDTCH 1.3.4 Queuing procedure (successful completion) Data Flow Diagram: queuing of the assignment procedure (successful completion). Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  64. 64. 64 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  65. 65. 1.3 Dedicated channel assignment 65 (1) Downlink DTAP service is suspended. (2) There are no TCH resources available. Downlink DTAP service is resumed. (3) When a TCH resource is successfully allocated internally in the BSC software, the queued request is serviced and the following counters are incremented: • 1094 tcAllocated (number of terrestrial circuits allocated) • 1095 tcAveragedUsedMoy/Max/Cum//Ech (average number of terrestrial circuits used) • 1609/0 chFrAllocatedTchAllocationTrZone (number of TCH/FR allocated for traffic in the inner of outer zone of the cell) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  66. 66. 66 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) • 1611/0 tchFrAveragedUsedTchAllocationTrZoneMoy/Max/Cum/Ech (average number of TCH/FR used for traffic in the inner or outer zone of the cell) • 1616/n • 1812 allocatedCircuitTsMoy/Max/Cum/Ech (number of TS allocations for traffic on circuit mode in the cell or allocatedCircuitTsTrZoneMoy/Max/Cum/Ech (number of TS allocations for traffic on circuit mode in the inner or the outer of the cell (4) Downlink DTAP service is suspended. (5) The counter incremented depends on the channel mode used (speech or data): • either 1197/0 (FR) or 1197/1 (EFR) for speech • or 1709 and 1705/n (n=0 to 6) for transparent data • or 1710 and 1707/n (n=0 to 2) for non transparent data (6) When the ASSIGNMENT_COMMAND message is received, 1049 attemptedTchFrSeizures (number of TCH/FR assignment requests) is incremented and, if the MS is the dualband type, 1715 attemptedTchFrSeizuresMsDualb is also incremented. (7) When the STOP_MEASUREMENT message for the SDCCH channel is received, if the BTS reports measurement counters, the BSC increments 1601, 1602, 1603, 1622, 1623, 1624, 1625, 1626, 1805, 1806, 1807 and 1808. (8) The old (SDCCH) channel is released. 1050 successfulTchFrSeizures is incremented and, if the MS is the dualband type, 1716 successfulTchFrSeizuresMsDualb is also incremented. (9) Downlink DTAP service is resumed. (10) ASCI counters are optional since they are related to the GSM-R functionality. List of the counters incremented or decremented during this procedure: Counter number Counter name Function 1044 signallingPhaseDurationMoy/ Max/Cum/Ech average time of a signaling channel seizure 1045 signallingPhaseDurationHighMoy/Max/Cum/Ech average time of a signaling channel seizure > 25s Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  67. 67. 1.3 Dedicated channel assignment Counter number 67 Function Counter name 1049 attempedTchFrSeizures number of TCH/FR assignment requests 1050 successfulTchFrSeizures number of TCH/FR successfully assigned 1094 tcAllocated number of terrestrial circuits allocated 1095 tcAveragedUsedMoy/Max/C um//Ech average number of terrestrial circuits used 1107 aInputMessage number of BSSAP messages received by the BSC 1108 aOutputMessage number of BSSAP messages sent by the BSC 1197/0 channelActivateSpeechFullR ate number of channels activated for speech: Full Rate algorithm 1197/1 channelActivateSpeechEnha ncedFullRate number of channels activated for speech: Enhanced Full Rate algorithm 1502 aNonTransparentUp number of BSSMAP messages sent by the BSC 1503 aNonTransparentDown number of BSSMAP messages received by the BSC 1601 downlinkPowerCtrlMaxSdcch Moy/Max/Cum/Ech duration of maximum downlink power use on busy SDCCHs 1602 uplinkPowerCtrlMaxSdcchMo y/Max/Cum/Ech duration of maximum uplink power use on busy SDCCHs 1603 connectionDurationSdcchMo y/Max/Cum/Ech connection duration of SDCCHs (concentric cell) or or connectionDurationSdcchTrZ oneMoy/Max/Cum/Ech connection duration of SDCCHs (non-concentric cell) sdcchAveragedUsedTrZone Moy/Max/Cum/Ech average number of SDCCHs used in the inner or outer zone of the concentric cell 1607 Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  68. 68. 68 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter name Function 1609/0 tchFrAllocatedTchAllocationT rZone number of TCH/FR or preempted PDTCH allocated for traffic in the inner of outer zone of the cell 1611/0 tchFrAveragedUsedTchAlloc ationTrZoneMoy/Max/Cum/E ch average number of TCH/FR or preempted PDTCH used for traffic in the inner or outer zone of the cell 1616/n [n= 0 to 1] tchAveragedQueueLengthHi ghPriorityMoy/Max/Cum/Ech for n=0 number of queued TCH requests with the highest priority and and tchAveragedQueueLengthOt herPriorityMoy/Max/Cum/Ech for n=1 number of queued TCH requests with an internal priority different than the highest one msLostMeasurements number of MS measurement messages not received (non-concentric cell) Counter number 1622 or msLostMeasurementsTrZone or number of MS measurement messages not received (concentric cell) 1623 rxLevDownLink or rxLevDownLinkTrZone sum of downlink signal strength measurements received (non-concentric cell) or sum of downlink signal strength measurements received (concentric cell) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  69. 69. 1.3 Dedicated channel assignment Counter number 1624 Function Counter name rxLevUpLink or rxLevUpLinkTrZone 69 sum of uplink signal strength measurements received (non-concentric cell) or sum of uplink signal strength measurements received (concentric cell) 1625 rxQualDownLink or rxQualDownLinkTrZone sum of downlink signal quality measurements (concentric cell) or sum of downlink signal quality measurements (non-concentric cell) 1626 rxQualUpLink or rxQualUpLinkTrZone sum of uplink signal quality measurements (non-concentric cell) or sum of uplink signal quality measurements (concentric cell) 1705/n (n = 0 to 6) channelActivateTchFrDataTx (x = 16 to 14400 b/s) number of TCH/FR activation for transparent data service with a transmission rate = x 1707/n (n = 0 to 2) channelActivateTchFrDataNT x (x = 6 to 14500 b/s) number of TCH/FR activation for non transparent data service with a transmission rate = x 1710 channelActivateTchFrNData NTHscsd number of channel activation for non transparent data service on TCH/FR Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  70. 70. 70 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Counter number Function Counter name 1715 attemptedTchFrSeizuresMs Dualb number of attempts of assignation of a TCH/FR for dualband mobiles 1716 successfulTchFrSeizuresMs Dualb number of successful TCH/FR assignations for dualband mobiles 1717 abisTrauFrameDlReceived number of frames TRAU downlink received 1718 abisTrauFrameDlCorrected number of frames TRAU downlink corrected 1719 abisTrauFrameDlMuted number of frames TRAU downlink that can not be corrected 1720 radioFrameUlReceived number of radio frames uplink received 1721 ECU_Activation number of erroneous frames (ECU may be activated or not) 1744 tchFrAllocated number of TCH/FR or preempted PDTCH allocated in the cell or or tchFrAllocatedTrZone number of TCH/FR or preempted PDTCH allocated in the inner or outer zone of the cell 1746 tchFrAveragedUsedMoy/Ma x/Cum/Ech average number of TCH/FR or preempted PDTCH used in the cell or or tchFrAveragedUsedTrZoneM oy/Max/Cum/Ech average number of TCH/FR or preempted PDTCH used in the zone (concentric cell) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  71. 71. 1.4 Handovers 71 Counter number Function Counter name 1805 msPowerIncControl number of MS increment power controls ordered by the Layer 1 management 1806 msPowerDecControl number of MS decrement power controls ordered by the Layer 1 management 1807 bsPowerIncControl number of BS increment power controls ordered by the Layer 1 management 1808 bsPowerDecControl number of BS decrement power controls ordered by the Layer 1 management 1812 allocatedCircuitTsMoy/Max/C um/Ech number of TS allocations for traffic in circuit mode in the cell or or allocatedCircuitTsTrZoneMoy /Max/Cum/Ech 1841/0 assignRequestSdcchToTchC hannel number of TS allocations for traffic in circuit mode in the inner or the outer zone of the concentric cell number of assignment request messages received: modification from an SDCCH channel to a TCH channel 1.4 Handovers 1.4.1 Overview Each handover procedure performed in a cell requires two phases, a selection phase and an execution phase. • selection phase: choice of the target cell (outgoing handover) or radio channel (incoming or intra-bts handover) • execution phase: switchover from one radio channel to another The execution phase is not started unless the selection phase is successfully completed as shown in the following diagram. Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  72. 72. 72 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) The ratios between the following counters are used to evaluate the efficiency of the procedures implemented in the BSS: • Number of handovers required (hoRequiredXxx) • Number of handover requests (hoRequestXxx) • Number of handovers executed (hoExecutionXxx) • Number of successful handovers (hoSuccessXxx) The procedures call on the following counters in problem cases: • permanent bsc observation: — hoIndicationNotTreatedTchoke — hoIndicationNotTreatedTmtBtwHo — hoUnsuccessReestIntraBts on TCH or SDCCH — hoUnsuccessReestOutgoingIntraBss on TCH or SDCCH — hoUnsuccessReestIncomingIntraBss on TCH or SDCCH — hoUnsuccessOutgoingIntraBssNAttempt on TCH or SDCCH — hoUnsuccessReestOutgoingInterBss on TCH or SDCCH — hoUnsuccessOutgoingInterBssNAttempt on TCH or SDCCH • temporary "handover" observation: — hoIntraBtsUnsuccessXxx on TCH or SDCCH — hoIntraBtsFailureXxx on TCH or SDCCH — hoOutIntraUnsuccessXxx on TCH or SDCCH — hoOutIntraFailureXxx on TCH or SDCCH — hoInIntraUnsuccessXxx on TCH or SDCCH — hoInIntraFailureXxx on TCH or SDCCH — hoOutInterUnsuccessXxx on TCH or SDCCH Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  73. 73. 1.4 Handovers 73 — hoOutInterFailureXxx on TCH or SDCCH — hoInInterUnsuccessXxx on TCH or SDCCH — hoInInterFailureXxx on TCH or SDCCH 1.4.2 Accounting principles To synchronize accounting, all the counters concerned by the same handover request are incremented at the end of the procedure, except for the counters used to tally repeated requests and refusals, which are stepped up in real time. The following diagram is an example of an outgoing handover requested by cell N in BSS 1 that is refused by the first cell in the list (cell A in BSS 1) and executed successfully in the second cell (cell B in BSS 2). It shows the counters that are updated by the handover procedure. 1.4.3 Intra-bts handover procedure In the intra-bts handover procedure, a dedicated channel is assigned in response to a modify radio channel request sent by Level 1 (Layer 1 Management). Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  74. 74. 74 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) Data Flow Diagram : intra-cell handover procedure (normal completion with communication on TRAFFIC phase) Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  75. 75. 1.4 Handovers 75 (1) A TCH resource is successfully allocated internally in the BSC software on the target cell. Then the following counters are incremented: • 1609/0 tchFrAllocatedTchAllocationTrZone (number of TCH/FR allocated for traffic in the inner of outer zone of the cell) • 1611/0 tchFrAveragedUsedTchAllocationTrZoneMoy/Max/Cum/Ech (average number of TCH/FR used for traffic in the inner or outer zone of the cell) • 1812 allocatedCircuitTsMoy/Max/Cum/Ech (number of TS allocations for traffic on circuit mode in the cell or allocatedCircuitTsTrZoneMoy/Max/Cum/Ech (number of TS allocations for traffic on circuit mode in the inner or the outer of the cell (2) The counter incremented depends on the channel mode used (speech or data): • either 1197/0 (FR) or 1197/1 (EFR) for speech • 1709 and 1705/n (n=0 to 6) for transparent data • 1710 and 1707/n (n=0 to 2) for non transparent data Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential
  76. 76. 76 Chapter 1 Observation counter incrementation principles and data flow diagrams (DFD) (3) When the STOP_MEASUREMENT message for the TCH channel is received, if the BTS reports measurement counters, the BSC increments 1198, 1199, 1600, 1622, 1623, 1624, 1625, 1626, 1805, 1806, 1807, 1808 and 1809/n (4) ASCI counters are optional since they are related to the GSM-R functionality. (5) When the deallocation of TCH is successfully performed in the originating cell, the following counters are decremented: • 1812 allocatedCircuitTsMoy/Max/Cum/Ech (number of TS allocations for traffic on circuit mode in the cell or allocatedCircuitTsTrZoneMoy/Max/Cum/Ech (number of TS allocations for traffic on circuit mode in the inner or the outer of the cell • 1746 tchFrAveragedUsedMoy/Max/Cum/Ech (average number of TCH/FR used in the cell) or tchFrAveragedUsedTrZoneMoy/Max/Cum/Ech (average number of TCH/FR used in the inner or outer zone of the cell) • 1611/0 tchFrAveragedUsedTchAllocationTrZoneMoy/Max/Cum/Ech (average number of TCH/FR used for traffic in the inner or outer zone of the cell) List of the counters incremented or decremented during this procedure: Counter number Counter name Function 1081 hoRequestIntraBts number of intra-bts handovers on TCH requested in the cell 1082 hoExecutionIntraBts number of attempts to execute intra-bts handovers on TCH in the cell 1083 hoSuccessIntraBts number of successful intra-bts handovers on TCH in the cell 1108 aOutputMessage number of BSSAP messages sent by the BSC to the MSC 1138/n [n=0 to 16] hoRequiredTchXxx number of handovers on TCH required: CauseXxx 1197/0 channelActivateSpeechFullR ate number of channels activated for speech: Full Rate algorithm 1197/1 channelActivateSpeechEnha ncedFullRate number of channels activated for speech: Enhanced Full Rate algorithm Global System for Mobile Communications (GSM) Nortel GSM BSS Performance Management — Observation Counters Fundamentals 411-9001-133 16.07 Preliminary 16.0 13 October 2006 Copyright © 2006, Nortel Networks . Nortel Networks Confidential

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