2G parameter Tuning

1. 2G cell parameters
audit
Axis
2247 sites - 19 BSC

2. Common cell data
Element Range
CONDITI
ON
Unit
Default
Value
Axis
Actual
Opt
Range
Remarks
AGBLK
0 to 7 if
NCOMB
0 to 2 if
COMB
ALL - 1 1
Number of reserved access grant blocks. Number of CCCH blocks reserved for the
access grant channel. The remaining CCCH blocks are used for the paging channel.
MFRMS 2 to 9 ALL CCCH 6 2
Multiframes period. Defines period of transmission for PAGING REQUEST messages
to the same paging subgroup. (Please refer to table MFRMS)
AGBLK : 1 ; 8 CCCH blocks in each multi frames and possible to have 16 to 72 Paging Group
A high number of paging groups means that the mobiles have to wait for a longer time than the low
number case before the right paging block arrives. This increases the time for paging. It also
reduces the paging capacity compared to using fewer paging groups. This is because with a high
number of paging groups, each paging group will have a short paging queue in the BTS.

3. Element
Rang
e
CONDITION Unit
Erics
son
Defa
ult
Axis
Actual
Opt
Range
Remarks
ACCMIN
47 to
110
GSM1800
MACRO
dBm 110
102
Whilst in idle mode, the MS continuously confirms that it has chosen the most appropriate cell by calculating
the quantity C1 from the received signal level rxlev:
C1 = (rxlev -ACCMIN) -max (CCHPWR -P, 0)
The MS camps on the cell providing the highest pos
INDOOR
CELL 1800
95
AIRPORT
INDOOR
110
CRH
0 to
14 in
steps
of 2
CELLS
FACING
LAC
BORDER dB 6
6 to 12
Cell Reselection Hysteresis. Receiving signal strength (rxlev) hysteresis for required cell re-selection over
location area border. Each change of location area requires a location update
ALL OTHER
CELLS
6
MAXRET
1,2,4,
7
TERRESTE
RIAL
TRANSMISS
ION
- 4 2, 4, 7
TX
3 to
12,14,
16,
20,25,
32,50
TERRESTE
RIAL
TRANSMISS
ION
- 50 50
Defines the number of timeslots over which the MS may spread transmission when accessing the system.
T3212
0 to
255
ALL CELLS
Deci
hours
40 20, 40
T3212 time-out value. Defines the time-out value that controls the location updating procedure, i.e. when
notifying the availability of the MS to the network. (GSM 04.08, section 10.5.2.11).
CRO
0 to
63
GSM1800
MACRO
0
0
Cell Reselection Offset. Defines an offset to encourage or discourage MSs to select the cell while it is
camping on another cell, i.e. perform a cell reselection. In order to optimise cell reselection, the additional cell
reselection parameters CRO, TO, a
GSM1800
MICRO
INDOOR
3, 6, 8,
10
Maximum retransmissions. Defines maximum number of retransmissions an MS may do when accessing the
system on RACH.
Idle mode behavior – cell data
Propose 4 since Axis network is coverage limited
Propose 20 since Axis network is coverage limited

4. Element
Ran
ge
Unit
Defa
ult
Axis
Actual
Opt
Range
Remarks
SSEVALSD
1 to
9
- 6 4, 6
Signal strength filter type for speech/data. The filters for down- and uplink signal strength in serving cell and downlink signal
strength from neighboring cells are selected by SSEVALSD for the channel mode
speech/data. (6 is straight average filter)
QEVALSD
1 to
9
- 6 3, 4, 6
Quality filter type for speech/data.
The filters for quality in down- and uplink in the serving
cell are selected by QEVALSD for the channel mode
speech/data. (6 is straight average filter)
SSEVALSI
1 to
9
- 6 6
Signal strength filter type for signaling only.
The filters for down- and uplink signal strength in serving
cell and downlink signal strength from neighboring cells
are selected by SSEVALSI for the channel mode
signaling only. (6 is straight average fi
QEVALSI
1 to
9
- 6 6
Quality filter type for signaling only.
The filters for quality in down- and uplink in the serving
cell are selected by QEVALSI for the channel mode
signaling only. (6 is straight average filter)
SSLENSD
1 to
20
SACC
H 10 2 to 10
Length of signal strength filter for speech/data. SSLENSD shall be specified only when SSEVALSD is in the range 6 to 9.
QLENSD
1 to
20
SACC
H 10 2 to 10
Length of quality filter for speech/data. QLENSD shall be specified only when QEVALSD is in the range 6 to 9.
SSLENSI
1 to
20
SACC
H 4 4
Length of signal strength filter for signaling only. SSLENSI shall be specified only when SSEVALSI is in the range 6 to 9.
QLENSI
1 to
20
SACC
H 4 4
Length of quality filter for signaling only. QLENSI shall be specified only when QEVALSI is in the range 6 to 9.
SSRAMPSD
1 to
20
SACC
H 5 5
Ramping length of signal strength filter for speech/data. SSRAMPSD shall be specified only when SSEVALSD is in the range
6 to 9.
SSRAMPSI
1 to
20
SACC
H 2 1, 2
Ramping length of signal strength filter for signaling only. SSRAMPSI shall be specified only when SSEVALSI is in the range
6 to 9.
MISSNM
0 to
18
- 3 3
Maximum number of consecutive missing measurements for a serving cell or neighboring cell permitted before alln old
measurements are considered invalid.
Locating cell filter data

6. Element
R
a
n
g
e
CONDITION
U
n
i
t
Ericsson Default Axis Actual Opt Range
Remarks
BSPWR
0
T
O
80
GSM1800 MACRO
(RBS2202/2106/2206/210
7/2207)
d
B
m
47
53
BTS Output power (ERP) on BCCH frequency. BSPWR is defined at the
reference point used in the locating algorithm.
NOTE: trial for path loss locating consideration
GSM1800 MACRO WITH
TCC
(RBS2202/2106/2206/210
7/2207)
51
GSM1800 MACRO WITH
SPB
(RBS2202/2106/2206/210
7/2207)
45
STREETCELL
(RBS2302/2306/2308)
49
INDOOR CELL
(RBS2302/2306/2308)
47
STREETCELL (RBS2309) 45
INDOOR CELL (RBS2309) 33
INDOOR . MICROCELL
OUTDOOR USING FULL
BTS
33
BSTXPWR
0
T
O
80
GSM1800 MACRO
(related to RBS Type )
d
B
m
45
53
BTS Output power (ERP) on all non - BCCH frequency (overlay).
BSTXPWR is defined at the reference point used in the locating algorithm.
Indoor value valid for Micro RBS only.
Micro Cell 33
INDOOR CELL (Related to
RBS Type ))
33
Locating basic ranking cell data
*Base Station Power correction

7. Element
Ran
ge
CONDIT
ION
Unit
Ericsson
Default
Axis
Actual
Opt range
Remarks
MSRXMIN
0 to
150
ALL
CELLS
dBm 100 94 to 100
Minimum required signal strength received at the MS in a given cell to consider the cell as
a possible candidate for handover. MSRXMIN takes a positive value, which represents the
corresponding negative value in calculations.
BSRXMIN
0 to
150
ALL
CELLS
dBm 150 98 to 104
Minimum required signal strength received at the BTS, at the reference point, to consider
the cell as a possible candidate for handover. BSRXMIN takes a positive value, which
represents the corresponding negative value in calculations.
MSRXSUFF
0 to
150
ALL
CELLS
dBm 0 0
Sufficient signal strength received at the MS to consider the cell selectable for further
ranking according to the magnitude of the path loss. MSRXSUFF takes a positive value
that represents the corresponding negative value in calculations.
BSRXSUFF
0 to
150
ALL
CELLS
dBm 150 150
Sufficient signal strength received at the BTS, at the reference point, to consider the cell
selectable for further ranking according to the magnitude of the path loss. BSRXSUFF
takes a positive value, which represents the corresponding negative value in
Locating basic ranking cell data

8. Element Range
CONDITIO
N
Unit Default
Axis
Actual
Opt
Range
Remarks
TALIM 0 to 63
ALL
CELLS
SAC
CH
62 5, 45, 62
Timing advance limit for handover. Urgency detection
parameter.
PSSBQ 0 to 63
ALL
CELLS
dB 10 10
Signal strength penalty when handover due to bad quality.
This penalty is valid during PTIMBQ. (Urgency is triggered by setting at QLIMUL/QLIMDL). Note
In order to minimise the risk of immediate handback, PSSBQ should be greater than (BQOFFSET
- hysteresi
PSSTA 0 to 63
ALL
CELLS
dB 63 63
Signal strength penalty when handover due to too large
timing advance. This penalty is valid during PTIMTA.
PTIMBQ 0 to 600
ALL
CELLS
Seco
nds
10 10
Penalty time when handover due to bad quality.
PTIMTA 0 to 600
ALL
CELLS
Seco
nds
10 10
Penalty time when handover due to too large timing
advance.
PSSHF 0 to 63
ALL
CELLS
dB 63 63
Signal strength penalty at handover failure.
This penalty is valid during PTIMHF.
When a handover to a cell fails due to signalling failure, a
penalty is assigned to that cell to avoid that the MS returns
to it immediately. The penalties are an amount of
PTIMHF 0 to 600
ALL
CELLS
Seco
nds
10 10
Penalty time at handover failure.
QLIMDL 0 to 100 GSM1800 dtqu 55 50
Quality limit downlink for handover. Urgency detection
parameter.
QLIMUL 0 to 100 GSM1800 dtqu 55 50
Quality limit uplink for handover. Urgency detection
parameter.
QLIMULAFR 0 to 100 GSM1800 dtqu 55 55
Uplink quality threshold for bad quality urgency handovers for AMR FR connections.
QLIMDLAFR 0 to 100 GSM1800 dtqu 55 55
Downlink quality threshold for bad quality urgency handovers for AMR FR connections.
Locating Urgency cell data
Dragon site (height>70m) in CBD area

9. Element Range
CONDITIO
N
Unit
Defau
lt
Axis
Actual
Opt
Range
Remarks
CELLQ HIGH, LOW ALL CELLS - HIGH HIGH
Cell quality. CELLQ defines whether the cell is suitable for Regional Processor Load (RPD)
regulation or not. HIGH - The cell is a cell where minor changes of radio transmission quality
can be expected. LOW - The cell is a cell where radio transmission qu
MAXTA
0 to 63
(normal cell).
0 to 219 (ext
range cell).
ALL CELLS
Bit
period
s (bp)
63 63
Maximum timing advance before an MS is considered lost. Note MAXTA should always be
greater than the parameter TALIM (see TALIM-1). MAXTA is a hard limit compared to TALIM,
which is a soft limit.
RLINKUP 1 to 63
ALL CELLS
EXCEPT
INDOOR
SACC
H
16 24
Radio link time-out. The maximum value of the radio link counter for the uplink. A counter that is
given the value RLINKUP is started in the BSC after the assignment of a dedicated channel.
Two units increase the counter if the SACCH data is successfully
RLINKT
8 to 64 in
steps of 4
ALL CELLS
EXCEPT
INDOOR
SACC
H
16 24
Radio Link time-out. The maximum value of the radio downlink counter. A counter that is given
the value RLINKT is started in the MS after the assignment of a dedicated channel. Two units
increase the counter if the SACCH data is successfully decoded. One
RLINKUPAF
R
1 to 63
ALL CELLS
EXCEPT
INDOOR
SACC
H
16 28
Radio link time-out. The maximum value of the radio link counter on the uplink for AMR FR
connections. A counter that is given the value RLINKUPAFR is started in the BSC after the
assignment of a dedicated channel. Two units increase the counter if the SA
RLINKTAFR
8 to 64 in
steps of 4
ALL CELLS
EXCEPT
INDOOR
SACC
H
16 30
Radio Link time-out. The maximum value of the radio downlink counter for AMR FR
connections. A counter that is given the value RLINKTAFR is started in the MS after the
assignment of a dedicated channel. Two units increase the counter if the SACCH data is
RLIKUPAHR 1 to 63
ALL CELLS
EXCEPT
INDOOR
SACC
H
16 28
Radio link time-out. The maximum value of the radio link counter on the uplink for AMR HR
connections. A counter that is given the value RLINKUPAHR is started in the BSC after the
assignment of a dedicated channel. Two units increase the counter if the SA
RLINKTAHR
8 to 64 in
steps of 4
ALL CELLS
EXCEPT
INDOOR
SACC
H
16 30
Radio Link time-out. The maximum value of the radio downlink counter for AMR HR
connections. A counter that is given the value RLINKTAHR is started in the MS after the
assignment of a dedicated channel. Two units increase the counter if the SACCH data is
Locating MISC cell data

10. Element Range
CONDITI
ON
U
n
i
t
Default
Axis
Actual
Opt
Range
Remarks
CMDR
96,
144
ALL
CELLS
- 144 144
Maximum channel data rate. It is used to set the maximum channel data rate in the cell. The
lowest value of CMDR and MAXCHDATARATE will be the actual channel rate in the cell. The
channel data rates are 9.6kb/s(96) and 14.4kb/s(144).
CHAP 0 to 8
ALL
CELLS
- 1 1
Channel Allocation Profile.
Each channel allocation profile provides a channel allocation strategy for all traffic situations. The
strategies differ with respect to the behaviour of the feature Immediate assignment on TCH, the
handling of GSM Phase 1 and
NECI
0 and
1
ALL
CELLS
- 0 1
New establishments cause indicator.
NECI is used to indicate to a GSM phase 2 MS whether to use GSM phase 1 establishment
(NECI = 0) causes or the full set of GSM phase 2 establishment causes (NECI = 1).
MC
ON,
OFF
ALL
CELLS
- OFF OFF
Multiple Channel switch.
MC identifies if more than one full rate TCH are allowed to be allocated for each MS connection in
the cell.
CSPSALLOC
See
Remar
ks
ALL
CELLS
-
CSPSN
OPRF
CSPSNOP
RF
This parameter determines if non-hopping TCHs on the BCCH frequency should be selected first,
last or if there is no preference at CS and PS allocation. The sellection is as follows:
1. CSPSNOPRF - No selectio
CSPSPRIO
CSPRI
O/PSP
RIO
ALL
CELLS
- PSPRIO PSPRIO
This parameter determines if the CS selection preference for non-hopping TCHs on the BCCH
frequency has higher or lower priority than the criterion to avoid TCH groups with PS priority.
Channel administration

11. Element Range
Ericsson
Default
Axis Actual Opt Range
Remarks
FPDCH
0 to 8
0 0, 1
FPDCH is used to dedicate a number of traffic channels in the cell for GPRS/EGPRS only. The
dedicated PDCH can not be pre-empted by circuit switched traffic. When a master PDCH is wanted in
the cell, i.e. when configured for GPRSNWMODE 1 or 3 (see GPRSNWM
CSPSALLOC
See
Remarks
CSPSNOP
RF
CSPSNOPRF
This parameter determines if non-hopping TCHs on the BCCH frequency should be selected first, last
or if there is no preference at CS and PS allocation. The selection is as follows:
1. CSPSNOPRF - No selection
CSPSPRIO
CSPRIO/
PSPRIO
PSPRIO PSPRIO
This parameter determines if the CS selection preference for non-hopping TCHs on the BCCH
frequency has higher or lower priority than the criterion to avoid TCH groups with PS priority.
PDCHPREEMPT 0 TO 8 0 0
This parameter determines if non-hopping TCHs on the BCCH frequency should be selected first, last
or if there is no preference at CS and PS allocation. The sellection is as follows:
1. 0 - No PDCHs protected
2. 1 - PDC
PRIMPLIM 1 TO 8 8 8
PRIMPLIM defines the maximum number of dedicated and semi-dedicated PDCHs allowed in the
primary PSET.
PSKONBCCH
ENABLE
D,
DISABLE
D
ENABLED ENABLED PSKONBCCH is used to disable the use of 8PSK on the BCCH carrier.
SPDCH 0 TO 16 0 0, 1 Optional preference parameter for the number of semi-dedicated PDCHs
GPRSPRIO 0 TO 15 0 0
This parameter controls whether pre-emptable ODPDCHs will be treated as idle or busy for dynamic
HR allocation and TCH packing functions (i.e. HR packing and DYMA), Cell Load Sharing, Subcell
Load Distribution, Hierarchical Cell Structure (HCS) and GSM-UM
Gprs/edge channel administration

12. Element Range
CONDITIO
N
U
ni
t
Default
Axis
Actual
Opt Range
Remarks
TN7BCCH
EGPRS,
GPRS
CHGR0 - GPRS EGPRS Indicates if Timeslot Number 7 on the BCCH frequency can be configured with
TCHs supporting EGPRS and GPRS, or GPRS only.
Note: if EDGE is activated, set to EGPRS
NUMREQCS3C
S4BPC
0 to 128
CHGR0
-
ON 2
The wanted number of BPCs in a channel group to be G-TCH. (GPRS)
CHGR1 ON -
NUMREQEGPR
SBPC
0 to 128
CHGR0
-
ON 1, 2, 3, 4
The wanted number of BPCs in a channel group to be E-TCH. (EDGE)
CHGR1 ON -
ODPDCHLIMIT 0 TO 100%
CHGR0
AND
CHGR1
% 100 100
This parameter limits the total number of on-demand PDCHs in the channel group.
The parameter indicates a percentage value of number of deblocked FR TCHs in
the channel group that can be allocated as on-demand PDCHs. Note: The
number of TCHs that can be
Gprs/edge channel administration
GPRS
TN7BCCH: GPRS –8-PSK (EDGE) would transmit at lower power than GMSK (back off
around 3dB), thus would reduced BCCH power .

13. Ms power control
Element Range
U
n
it
Ericsson
Default
Axis
Actual
Opt Range
Remarks
DMPSTATE:
ACTIVE,
INACTIV
E
ACTIVE ACTIVE
Dynamic MS power control state.
AMRPCSTATE:
ACTIVE,
INACTIV
E
ACTIVE ACTIVE
Dynamic MS power control state for AMR
SSDESUL 47 to 110
d
B
m
92 90, 92
Defines the target value for the desired signal strength uplink as measured by the BTS in different parts of
the power control interval during the stationary phase.
SSDESULAFR 47 to 110
d
B
m
92 90, 92
For AMR FR connections defines the target value for the desired signal strength uplink as measured by the
BTS in different parts of the power control interval.
QDESUL 0-76
d
t
q
u
20 30, 40
Desired quality, uplink.
QDESULAFR 0-76
d
t
q
u
40 30, 40 Desired quality, uplink for AMR FR connections.
LCOMPUL 0-100 % 6 5
Path loss compensator factor, uplink. When set to zero, no power control towards SSDES is performed.
QCOMPUL 0-100 % 55 55, 60
Quality deviation compensation factor, uplink. When set to zero, no quality compensation is performed.
SSDESULAHR 47 to 110
d
B
m
92 90, 92
Defines the target value for AMR HR connections for the desired signal strength uplink as measured by the
BTS in different parts of the power control interval. SSDESULAHR takes a positive value that represents the
corresponding negative value in calculat
QDESULAHR 0-76
d
t
q
u
40 30, 40
Defines the target value for AMR HR connections for the desired signal strength uplink as measured by the
BTS in different parts of the power control interval. SSDESULAHR takes a positive value that represents the
corresponding negative value in calculat

14. Element Range
U
n
it
Default
Axis
Actual
Opt
Range
Remarks
DBPSTATE
ACTIVE
/INACTI
VE
-
INACTI
VE
ACTIVE
Dynamic BTS power control state.
The command RLBCI initiates BTS dynamic power
control in a cell. The command is valid for both underlaid
and overlaid subcells.
AMRPCSTATE:
ACTIVE
,
INACTI
VE
INACTI
VE
ACTIVE
Dynamic MS power control state for AMR
SDCCHREG
ON,
OFF
- OFF OFF
SDCCH power control switch. Identifies if power control
on SDCCH is allowed on non-BCCH frequencies.
SSDESDL
47 to
110
d
B
m
90 90, 92
Defines the target value for the desired signal strength
downlink as measured by the MS in different parts of the
power control interval.
SSDESDLAFR
47 to
110
d
B
m
90 90, 92
For AMR FR connections defines the target value for the desired signal strength downlink as measured by the MS in
different parts of the power control interval.
LCOMPDL 0 to 100 % 5 5
Path loss compensator factor, downlink. When set to zero
there is no power control towards SSDESDL.
QDESDL 0 to 76
dt
q
u
30 30, 40
Desired quality, downlink.
QDESDLAFR 0 to 76
dt
q
u
40 30, 40 Desired quality, downlink for AMR FR connections.
QCOMPDL 0 to 60 % 55 55, 60
Quality deviation compensation factor, downlink. When
set to zero, no quality compensation is performed.
SSDESDLAHR
47 to
110
d
B
m
90 90, 92
Defines the target value for AMR HR connections for the desired signal strength downlink as measured by the MS in
different parts of the power control interval. SSDESDLAHR takes a positive value that represents the corresponding
negative value in calculat
QDESDLAHR 0 to 76
dt
q
u
30 30, 40
Desired quality downlink for AMR HR connections.
BTS power control

15. Element
Rang
e
CONDITIO
N
U
nit
Ericsson Default Axis Actual
Remarks
DTXD
ON,
OFF
ALL CELLS - ON ON
Discontinuous Transmission Downlink. With downlink DTX ON the transmitter in the BTS is switched
off during pauses in speech or data transmission. The DTXD parameter is defined on a per cell
basis and the function affects all TCHs allocated on the non BCC
DTXU 0 to 2 ALL CELLS - 1 1
Uplink DTX indicator.
0 The MSs may use uplink discontinuous transmission.
1 The MSs shall use uplink discontinuous transmission.
2 The MSs must not use uplink discontinuous transmission.
DTX cell data

16. Element Range CONDITION
U
n
it
Default
Axis
Actual
Remarks
LAYER 1 to 8
GSM1800 MACRO - NA 6 Cell layer.
LAYER defines which cell layers belong to the specified HCSBAND. Layer 1 has the highest
priority.
GSM1800 INDOOR - NA 2, 3
LAYERTHR
0 to
150
GSM1800 MACRO
d
B
m
NA 110
The signal strength threshold is used for ranking of cells in different layers within each
HCSBAND. Note: Each in building cell should have its respective layerthr tuned by IBS
engineer for optimum performance, with 75 acts as the initial value.
GSM1800 INDOOR 75,87
LAYERHYST 0 to 63
GSM1800 MACRO d
B
m
NA 3
Layer hysteresis. The signal strength hysteresis is used for ranking cells in different layers
within each HCSBAND.
GSM1800 INDOOR
PSSTEMP 0 to 63
GSM1800 MACRO d
B
m
NA 0 to 30
Signal strength penalty temporary offset. When a fast moving MS connected to a higher layer
(lower priority) cell passes through a lower layer (higher priority) cell's coverage area, it might
be undesirable that the MS performs a handover to the lower lay
GSM1800 INDOOR
PTIMTEMP
0 to
600
GSM1800 MACRO
S NA 0 to 30
Penalty duration. PTIMTEMP specifies the duration during which PSSTEMP is valid.
GSM1800 INDOOR
FASTMSREG
ON,
OFF
ALL CELLS - OFF OFF
Handling of fast-moving mobiles switch.
HCSIN
0 to
100
ALL CELLS S NA 0
HCS traffic distribution level threshold to allow HCS handover into a cell. HCS handover into
an internal neighbour cell is allowed when the channel availability of the neighbour cell is
above or equal to its HCSIN threshold. When the default value for HC
HCSOUT
0 to
100
ALL CELLS S NA 100
HCS traffic distribution level threshold to allow HCS handover out from a cell. HCS handover
out from the serving cell is allowed when the channel availability of the serving cell is below or
equal to its HCSOUT threshold. When the default value for HCSOU
Hcs cell data

17. Element Range CONDITION
U
nit
Ericsso
n
Default
Axis Actual
Remarks
CLSSTATE
ACTIV
E,
INACT
IVE.
ALL CELLS - ACTIVE ACTIVE
Cell load sharing active/inactive for an individual cell. For CLSSTATE activation to have effect, LSSTATE
must be activated.
CLSACC*
1 to
100
1 TRU (6 TCH)
% 40
40 Percentage of available full rate capable traffic channels, in a target cell, at or below which no handovers
due to Cell Load Sharing will be accepted. Note: * - this setting is for macro and street cells only. No
CLS is activated at indoor cell. Not acti
2 TRU (14 TCH)
3 TRU (21 TCH)
4 TRU (29 TCH)
5 TRU (36 TCH)
6 TRU (44 TCH)
CLSLEVEL* 0 to 99
1 TRU (6 TCH)
% 20
20 Percentage of available full rate capable traffic channels at which or below which Cell load sharing
evaluations are initiated. The value of CLSLEVEL must be less than the value of CLSACC.
2 TRU (14 TCH)
3 TRU (21 TCH)
4 TRU (29 TCH)
5 TRU (36 TCH)
6 TRU (44 TCH)
CLSRAMP 0 to 30 ALL CELLS
Se
co
nd
s
8 5, 8
Cell load sharing ramping time parameter. The interval during which the value of RHYST is ramped up from
zero to the final value.
HOCLSACC
ON,
OFF
ALL CELLS - OFF OFF
Handover due to Cell load sharing accepted to this cell.
RHYST
0 to
100
ALL CELLS % 75 75, 100
Hysteresis reduction parameter. Determines how much the
hysteresis values can be reduced in the Cell load sharing
evaluation.
Cell load sharing

18. Element Range CONDITION Unit
Ericsson
Default
Axis Actual
Remarks
ACSTATE
ON,
OFF
ALL CELLS - ON ON
Adaptive Configuration State. Activation state of the Adaptive Configuration of Logical
Channels function in the cell.
SLEVEL
0 to 2,
CONG.
ALL CELLS - 1 0 to 2
SDCCH Level. Level of remaining SDCCH subchannels when an attempt to increase the number of
SDCCH/8 by reconfiguring a TCH to an SDCCH/8 will take place. If CONG is set, The attempt to
increase the number of SDCCH/8 will take place when allocation of an S
STIME
15 to
360
ALL CELLS Seconds 20 20, 40
SDCCH Time Interval. Minimum time interval before an SDCCH/8 configured by Adaptive
Configuration of Logical Channels is reconfigured back to a TCH when SDCCH demands are low. As
long as the number of SDCCH/8s is higher than the basic configuration, an e
Adaptive configuration

19. Element Range
CONDITIO
N
U
nit
Ericsso
n
Default
Axis Actual
Remarks
DMQB
ON,
OFF
ALL CELLS - OFF ON
Defines if the Dynamic Half Rate (HR) to Full Rate (FR) Mode Adaptation due to bad quality is active (ON)
or inactive (OFF).
DMQBAMR
0 to
100
ALL CELLS - - 50
Channel quality threshold for Adaptive Multi Rate (AMR) capable mobiles using a HR traffic channel. It
determines when a change from HR to FR is initiated for Dual Rate mobiles capable of AMR.
DMQBNAMR
0 to
100
ALL CELLS - - 45
Channel quality threshold for mobiles not capable of AMR using a HR traffic channel. It determines when a
change from HR to FR is initiated for Dual Rate mobiles not capable of AMR.
DMQG
ON,
OFF
ALL CELLS - OFF ON
Defines the if the Dynamic Full Rate (FR) to Half Rate (FR) Mode Adaptation quality evaluation is active
(ON) or inactive (OFF).
DMQGAMR
0 to
100
ALL CELLS - - 40
Channel quality threshold for Adaptive Multi Rate (AMR) capable mobiles using a FR traffic channel. It
determines when a change from FR to HR is allowed for Dual Rate mobiles capable of AMR.
DMQGNAMR
0 to
100
ALL CELLS - - 30
Channel quality threshold for mobiles not capable of AMR using a FR traffic channel. It determines when a
change from FR to HR is allowed for Dual Rate mobiles not capable of AMR..
DMTHAMR
0 to
100
ALL CELLS % - 20
DMTHAMR is the HR packing threshold parameter for AMR HR capable MSs. When below this value a HR
packing or dynamic mode adaptation from FR to HR is initiated. The parameter expresses the ratio
between idle and de-blocked TCHs in percent and is set per ce
DMTHNAMR
0 to
100
ALL CELLS % - 10
DMTHNAMR is the HR packing threshold parameter for non AMR but DR capable MSs. When below this
value a HR packing or dynamic mode adaptation from FR to HR is initiated. The parameter expresses the
ratio between idle and de-blocked TCHs in percent and is s
DTHAMR
0 to
100
ALL CELLS % - 50 & 90
Indicates the ratio between idle and de-blocked TCHs in the cell. Below this threshold an AMR MSs will be
allocated on HR channels.
DTHNAMR
0 to
100
ALL CELLS % - 50 & 90
Indicates the ratio between idle and de-blocked TCHs in the cell. Below this threshold a non-AMR but DR
capable MS will be allocated on HR channels.
DMSUPP
ON,
OFF
ALL CELLS - OFF ON
Controls the activation of Dynamic FR/HR Mode Adaptation (DYMA).
DHA
ON,
OFF
ALL CELLS - OFF ON
Controls the activation of FR/HR Allocation.
Adaptive configuration

20. Element Range CONDITION
U
n
i
t
Default Axis Actual
Remarks
LA ON, OFF. ALL CELLS ON ON
Activates and deactivates the feature GPRS Link Adaptation.
CHCSDL
NA, CS-1, CS-2,
CS-3, CS-4.
ALL CELLS CS-2 CS-2
Coding Scheme for the downlink. Parameter CHCSDL defines the initial CS that will be
used for the downlink. If set to NA, the parameter CHCODING will be used instead.If GPRS
Link Adaptation is not active, the selected initial CS will work as static.If GPR
Gprs/edge link adaptation

21. Element Range
CONDITI
ON
U
ni
t
Default Axis Actual
Remarks
AWOFFSET 0 to 63
ALL
CELLS
3 3 & 5
Signal strength region where assignment to worse cell is allowed. AWOFFSET and BQOFFSET are
used to define the regions along the cell border where assignment to worse cell and bad quality
urgency handover are allowed.
BQOFFSET 0 to 63
GSM1800
(MACRO)
d
B
3
3
Signal strength region for bad quality urgency handovers.
Note: BQOFFSET is defined as a cell to cell relation and
is a symmetrical parameter.
MICROC
ELL
STREET
CELL
3
INDOOR 3
BQOFFSETAFR 0 to 63
GSM1800
(MACRO)
d
B
3
3
Signal strength region for bad quality urgency handovers for AMR FR connections. Note
BQOFFSETAFR is defined as a cell-to-cell relation and is a symmetrical parameter.
MICROC
ELL
STREET
CELL
3
INDOOR 3
locating

22. Element Range CONDITION
U
n
i
t
Erics
son
Defau
lt
Axis Actual
Remarks
HIHYST 0 - 63
GSM1800
(MACRO)
d
B
5
3, 5
Signal strength hysteresis when evaluating high signal strength cells.
Note: HIHYST is only valid for the Ericsson3 locating algorithm.
MICROCELL
STREETCELL
5
INDOOR 5
LOHYST 0 - 63
GSM1800
(MACRO)
d
B
3
3
Signal strength hysteresis when evaluating low signal strength cells.
Note: LOHYST is only valid for the Ericsson3 locating algorithm.
MICROCELL
STREETCELL
3
INDOOR 3
HYSTSEP 0 - 150
GSM1800
(MACRO)
d
B
90 90
Signal strength separator for high and low signal strength cells.
HYSTSEP takes a positive value that represents the corresponding negative value in
calculations. Note: HYSTSEP is only valid for the Ericsson3 locating algorithm.
MICROCELL
STREETCELL
INDOOR
OFFSET -63 TO 63
GSM1800
(MACRO)
d
B
0
0
Signal strength offset. The parameter is represented by OFFSETN, if the value is
in the range (−63, -1) dB. Positive values, (0, 63) dB, is represented by OFFSETP.
Note: OFFSET is only valid for the Ericsson3 locating algorithm.
MICROCELL
STREETCELL
0
INDOOR 0
Locating (ericsson3)

23. BSC PROPERTY Range
CONDITI
ON
Unit Default
Axis
Actual
Remarks
LOWSSDL-102 47 to 110 BSC dBm 104 102 Low signal strength limit for urgency condition, downlink.
LOWSSUL-104 47 to 110 BSC dBm 104 104 Low signal strength limit for urgency condition, uplink.
BADQDL-55 0 to 100 BSC dtqu 55 55 Bad quality limit for urgency condition, downlink
BADQUL-55 0 to 100 BSC dtqu 55 55 Bad quality limit for urgency condition, uplink
AMRFRSUPPORT-2 0 to 5 BSC 0 2
It indicates if AMR full rate support is switched. It indicates
if AMR full rate support is switched on and which codec set
is active in the BSC
AMRHRSUPPORT-2 0 to 4 BSC 0 2
It indicates if AMR half rate support is switched. It indicates
if AMR half rate support is switched on and which codec set
is active in the BSC
LQCACT-3 0 to 3 BSC 0 3 Controls the feature Link Quality Control in Enhanced GPRS.
LQCMODEDL-1 0 to 2 BSC 0 1
Controls the aggressiveness of the LQC algorithm in the
uplink, for acknowledge mode TBFs if EGPRSIRUL is set to
1. Otherwise LA mode is always used.
BSC property

24. codec rate (kbps) Threshhold (0.5 dB) Hysteresis(0.5 dB)
codec mode 1 4.75 12 (6 dB) 2 (1 dB)
codec mode 2 5.9 21 (10.5 dB) 3 (1.5 dB)
codec mode 3 6.7 21 (10.5 dB) 3 (1.5 dB)
codec mode 4 10.2
codec rate (kbps) Threshhold Hysteresis
codec mode 1 4.75 12 (6 dB) 2 (1 dB)
codec mode 2 5.9 17 (8.5 dB) 3 (1.5 dB)
codec mode 3 7.95 21 (12.5 dB) 3 (1.5 dB)
codec mode 4 12.2
codec rate (kbps) Threshhold (0.5 dB) Hysteresis(0.5 dB)
codec mode 1 4.75 23 (11.5 dB) 3 (1.5 dB)
codec mode 2 5.9 28 (14 dB) 4 (2 dB)
codec mode 3 6.7 32 (16 dB) 4 (2 dB)
codec mode 4 7.4
codec rate (kbps) Threshhold Hysteresis
codec mode 1 4.75 23 (11.5 dB) 3 (1.5 dB)
codec mode 2 5.9 31 (15.5 dB) 4 (2 dB)
codec mode 3 7.4
Full rate codec set 1
Full rate codec set 2
Half rate codec set 1
Half rate codec set 2