xcal drive test tool
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XCAL series of drive test tools are designed to troubleshoot, monitor, maintain and optimize wireless voice and data network performance - all in realtime. XCAL assesses QoS/QoE and ensures seamless service integration with existing GSM, WCDMA, HSPA, EVDO, Mobile WiMAX, TD-SCDMA, LTE, LTE-A and LTE-3CA.
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Logical channel - Variety of information is transmitted between the MS and BTS. There are different logical channels depending on the information sent. The logical channels are of two types
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BCCH( Broadcast Control Channel )
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On completion of the module one should be clear about the parameters required during drive test what does it mean and how much it is important.
Parameters regarding in windows like :
a) Current Channel
b) Radio parameters
c) Serving + Neighbors
Time: It is system time of computer.
Cell name: It displays the name of the sector which is serving according to the cellfile that is loaded in TEMS.
CGI : It stands for the Cell Global Identity which is unique for every sector of the site. It consists of MCC,MNC,LAC,CI.
Cell GPRS Support: Tells sector is having GPRS or not. Values are Yes or No .
Band : It tells in which Freq. Band mobile is operating e.g. GSM 900/ 1800.
BCCH ARFCN: It tells by which BCCH is the mobile station getting served.
TCH ARFCN: On which Traffic Freq. call is going on.
BSIC (Base Station Identity Code) : It is combination of Network Color Code (NCC) (0 – 7) & Base Station Color Code (BCC) (0 – 7). e.g. 62. It is decoded by mobile on every Sync. Channel Message.
Mode: It is shows in which state is mobile operating, Idle, Dedicated & Packet.
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The document discusses UMTS planning and dimensioning processes. It describes:
1) The overall planning process which includes system dimensioning, radio network planning, pre-launch optimization, performance monitoring, and post-launch optimization.
2) The inputs, assumptions, and steps used for air interface dimensioning which includes uplink and downlink link budget analysis to determine coverage requirements and capacity needs.
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Physical channel - Each timeslot on a carrier is referred to as a physical channel. Per carrier there are 8 physical channels.
Logical channel - Variety of information is transmitted between the MS and BTS. There are different logical channels depending on the information sent. The logical channels are of two types
Traffic channel
Control channel
BCH Channels
BCCH( Broadcast Control Channel )
Downlink only
Broadcasts general information of the serving cell called System Information
BCCH is transmitted on timeslot zero of BCCH carrier
Read only by idle mobile at least once every 30 secs.
SCH( Synchronisation Channel )
Downlink only
Carries information for frame synchronisation. Contains TDMA frame number and BSIC.
FCCH( Frequency Correction Channel )
Downlink only.
Enables MS to synchronise to the frequency.
Also helps mobiles of the ncells to locate TS 0 of BCCH carrier.
RACH( Random Access Channel )
Uplink only
Used by the MS to access the Network.
AGCH( Access Grant Channel )
Downlink only
Used by the network to assign a signalling channel upon successfull decoding of access bursts.
PCH( Paging Channel )
Downlink only.
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This document provides an overview and classification of interference sources in GSM networks, as well as approaches to locating interference problems. It discusses symptoms of network interference, including errors seen in traffic statistics and drive tests. Interference sources are classified as hardware faults, intra-network interference between cells, and inter-network interference from other communication systems. Methods for locating interference include analyzing OMC data, alarms, drive tests, and using spectrum analyzers to detect interfering signals. The document also provides guidance on solving common interference issues.
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This document provides an overview of LTE functionalities and features. It begins with background on LTE development and standardization. It then describes the LTE network elements and interfaces, including the radio interface between UE and eNB. The document reviews the RRM framework and lists key RRM features, providing status updates on which features are ready in the current release or planned for future releases. It also includes roadmaps showing the planned features and timeline for LTE releases. The document appears to be an internal presentation on LTE technologies and the Nokia Siemens Networks product roadmap.
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1. The document discusses LTE post launch optimization, including problem causes, solutions, and case studies.
2. It describes different types of counters used to collect PM statistics, including peg, gauge, accumulator, scan, PDF, DDM, calculated, trigACC, and trigSCAN counters.
3. Potential causes of poor accessibility for E-RAB establishment are discussed, including poor coverage, alarms, high load, hardware issues, high UL interference, PCI conflicts, RACH root sequence index planning, UE camping in wrong cells, wrong system constant settings, and VSWR or cell availability issues.
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The document describes various signaling messages used in different layers and interfaces of the GSM network, including:
1. Radio Resource (RR) messages for channel establishment, ciphering, handover, channel release, paging, and system information on the Um interface.
2. Messages for BTS Management (BTSM) on the Abis interface for radio link management, channel management, and TRX management.
3. Base Station System Application Part (BSSAP) messages on the A interface for resource management between the BSC and MSC.
4. Mobile Application Part (MAP) messages involving mobility services, call handling services, and short message services between entities in the core network.
Lte drive test parameters
The document discusses various parameters used in LTE drive testing including:
- RSRP, RSRQ, SINR, RSSI, CQI, PCI, BLER, and throughput which provide information on signal strength, quality, and performance. Phone-based drive testing allows monitoring of these parameters and correlation with data performance. MIMO and handovers between LTE and other technologies can also be evaluated. Key metrics include coverage, capacity, and end-user experience.
Call flows
The document provides an overview of GSM, GPRS, UMTS, HSDPA and HSUPA protocols and call flows. It describes the architecture, interfaces and protocols of each generation at the physical, data link and network layers. Key protocols discussed include LAPD, RR, MM, CM, SNDCP, GTP, RLC, MAC, RRC. Call flows for basic call origination, authentication, data transfer and detach procedures are illustrated for each network. The document also introduces HSDPA and HSUPA enhancements to UMTS such as new channels, scheduling functionality and H-ARQ protocol.
Optimisation guide line ver1.1
This document provides guidelines for optimizing 3G networks through neighbor optimization and coverage adjustments. The objectives are to have an optimum number of neighbors to clean up pilot pollution, reduce overshooting, increase capacity, and reduce the possibility of soft congestion conflicts. The methodology involves deleting and adding neighbors based on data from the OSS, as well as adjusting antenna tilting. The optimization sequence is outlined, including guidelines for neighbor deletion, addition of different neighbor types, and planning of the SIB11. The end goal is to have fewer than 36 total neighbors and avoid blocking alarms due to too many neighbors.
Drive Test
Drive Tests and Propagation Prediction software are the two methods that are used to check the coverage area of a particular wireless system. Generally prediction software is used in conjunction with the radio signal measurements in order to determine an accurate picture of signal propagation. In some cases, field measurements may be needed to be taken in order to calibrate the prediction software.
Ericsson important optimization parameters
The document lists important optimization parameters for Ericsson including parameters related to system configuration, capacity management, directed retry, handover, HSDPA/EUL, IRAT, and idle mode selection and reselection. It provides descriptions of over 50 parameters that control aspects such as power levels, admission limits, thresholds for cell reselection, and criteria for measurements.
TEMS PARAMETERS
On completion of the module one should be clear about the parameters required during drive test what does it mean and how much it is important.
Parameters regarding in windows like :
a) Current Channel
b) Radio parameters
c) Serving + Neighbors
Time: It is system time of computer.
Cell name: It displays the name of the sector which is serving according to the cellfile that is loaded in TEMS.
CGI : It stands for the Cell Global Identity which is unique for every sector of the site. It consists of MCC,MNC,LAC,CI.
Cell GPRS Support: Tells sector is having GPRS or not. Values are Yes or No .
Band : It tells in which Freq. Band mobile is operating e.g. GSM 900/ 1800.
BCCH ARFCN: It tells by which BCCH is the mobile station getting served.
TCH ARFCN: On which Traffic Freq. call is going on.
BSIC (Base Station Identity Code) : It is combination of Network Color Code (NCC) (0 – 7) & Base Station Color Code (BCC) (0 – 7). e.g. 62. It is decoded by mobile on every Sync. Channel Message.
Mode: It is shows in which state is mobile operating, Idle, Dedicated & Packet.
Time slot: On which time slot of current TCH call is going on. Viz. time slot no. of TRX.
Initial LTE call Setup Flow
The document summarizes the initial call setup process between a UE (user equipment), eNB (base station), MME (mobility management entity), HSS (home subscriber server), S-GW (serving gateway), and P-GW (packet data network gateway). It involves:
1) The UE performing random access and connection requests to the eNB;
2) Authentication and security setup between the UE, MME, and HSS;
3) Context setup and exchange of UE capability information between the UE, eNB, and MME;
4) Session creation between the MME, S-GW, and P-GW to enable data transfer.
2 g data call flow
The document discusses GPRS network architecture and processes. It describes how a mobile station (MS) attaches to and detaches from the GPRS network by communicating with the SGSN and HLR. It also describes how a temporary block flow (TBF) is established to enable data transfer between the MS and network. Additionally, it outlines how a packet data protocol (PDP) context is activated and deactivated to manage the subscriber's data session.
Cs fallback feature
This document discusses LTE CS Fallback features which allow LTE networks to reuse CS infrastructure to provide voice and other circuit switched services. CS Fallback enables LTE terminals to redirect to 2G/3G networks when initiating CS services like voice calls. The key aspects covered include the CS Fallback network architecture using the SGs interface, the combined attach procedure used for location updates, advantages/disadvantages of different CS Fallback mechanisms, and signaling flows for CS Fallback and paging.
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Deepak Rathi
Deepak Rathi has 2 years of experience working in RF engineering for the telecom industry. He currently works for Ikya Human & Capital Solution, a division of QuestCorp. As an RF Engineer, he works on devices that transmit or receive radio waves for wireless networks and equipment. His responsibilities include project management, parameter audits, drive testing, and improving wireless network coverage and signal quality through analysis of radio wave testing results and network parameters. He also coordinates with vendor teams on optimization and troubleshooting issues.
xcap
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Telecom software testing for CSPs
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How to perform walktest from nemo outdoor
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EDIT: NodeXL is no longer available for free
AZQ Android 2G/3G/4G Test Tool Presentation 2014
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This document outlines key performance indicators (KPIs) for various objectives of Tarasol Telecom. It lists KPIs for call center objectives like wait times and call volume. Customer satisfaction KPIs include survey scores and complaint metrics. Systems and network KPIs focus on availability, downtime, and support costs. Quality, compliance, coverage, and revenue also have associated KPIs measuring factors like opinion scores, connections, coverage percentages, and revenue per user.
2 g vs-3g dt-
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The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
Nemo outdoor 6_training_aug2011 [compatibility mode]
This document provides an overview of the Nemo Outdoor network testing solution. It outlines the course contents which cover an introduction to Nemo Outdoor, installation, configuration, features and hands-on operation. Key highlights include benchmarking of multiple networks simultaneously, extensive scripting capabilities, quality of service measurements, and the ability to export measurement files and maps. The document also lists supported vendors and chipsets, and provides instructions on setting up the hardware system and configuring Nemo Outdoor.
Tems layer3_messages
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