Axis 2g Parameters Audit

2G cell parameters audit

Axis2247 sites - 19 BSC

Parameters recommendation for changes

Parameters Current Value New Value Remarks

T3212 40 20 This parameters recommend to have common value throughout the network

PSKONBCCH ENABLE DISABLEThis parameter will not allowed 8-PSK modulation scheme on BCCH TRX thus preserve the BCCH to transmit at maximum power

TN7BCCH EGPRS GPRSThis parameter will not allowed EDGE traffics on timelot 7 BCCH TRX thus preserve the BCCH to transmit at maximum power. EDGE data traffics will be using other TRX.

BSPWR 53 43 Change this parameter to 49 for Suburban, rural and highway cells

BSTXPWR 53 43 Change this parameter to 49 for Suburban, rural and highway cells

EGPRSIRUL 0 1 Switch on IR for UL

LQCMODEUL 0 1 Activate IR and LA for UL to get optimize throughput

LQCMODEDL 1 2 Activate LA/IR and BLER for DL to get optimize throughput

Common cell dataElement 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 0,1

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.

0 – BSCPK01 (as agreed during planning meeting on 28 April 2011)1 – ALL BSC EXCEPT BSCPK01

MFRMS 2 to 9 ALL CCCH 6 2 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.

Element Range CONDITION Unit Default Axis Actual

Opt Range

Remarks

ACCMIN 47 to 110

GSM1800 MACRO

dBm 110

102 102Whilst 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 95

AIRPORT INDOOR 110 110

CRH0 to 14 in steps

of 2

CELLS FACING LAC BORDER

dB 6

6 to 12 6 to 12Cell Reselection Hysterysis . Receiving signal strength (rxlev) hysterysis for required cell re-selection over location area border. Each change of location area requires a location update

ALL OTHER CELLS 6 6

MAXRET 1,2,4,7

TERRESTERIAL TRANSMISSION

- 4 2, 4, 74

(CDD)

Maximum retransmissions. Defined maximum number of retransmission an MS may do when accessing the system on RACH. (Maximum retransmission before the MS do reselection to other cell)2 – Dense urban/urban environment4 – Suburban/Rural7- Highway

Idle mode behavior – cell data

Element Range CONDITION Unit Default Axis Actual Opt Range

Remarks

TX

3 to 12,14,1

6, 20,25,3

2,50

TERRESTERIAL TRANSMISSION

- 50 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 20 (CDD)

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).

20 – Optimum value due to coverage limitation on AXIS network

CRO 0 to 63

GSM1800 MACRO

0

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 optimize cell reselection, the additional cell reselection parameters CRO, TO, and PT. Optimization start from 3 to 10 depends on traffics strategy

C2=C1 – CRO PT=31

3 – medium

6 – medium

8 – aggressive

10 – aggressive

GSM1800 MICRO INDOOR

3, 6, 8, 10

3, 6, 8, 10

Idle mode behavior – cell data

Element Range Unit Defa

ultAxis

ActualOpt

RangeRemarks

SSEVALSD 1 to 9 - 6 6 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 modespeech/data. (6 is straight average filter)

QEVALSD 1 to 9 - 6 6 6

Quality filter type for speech/data.The filters for quality in down- and uplink in the servingcell are selected by QEVALSD for the channel modespeech/data. (6 is straight average filter)

SSEVALSI 1 to 9 - 6 6 6

Signal strength filter type for signaling only.The filters for down- and uplink signal strength in servingcell and downlink signal strength from neighboring cellsare selected by SSEVALSI for the channel modesignaling only. (6 is straight average filter)

QEVALSI 1 to 9 - 6 6 6

Quality filter type for signaling only.The filters for quality in down- and uplink in the servingcell are selected by QEVALSI for the channel modesignaling only. (6 is straight average filter)

SSLENSD 1 to 20

SACCH 10 10 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

SACCH 10 10 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

SACCH 4 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

SACCH 4 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

SACCH 5 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

SACCH 2 2 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 3Maximum number of consecutive missing measurements for a serving cell or neighboring cell permitted before alln old measurements are considered invalid.

Locating cell filter data

Element

Range

CONDITIONUnit

Ericsson Default Axis Actual Opt Range

Remarks

BSPWR

0 TO 80

Dense Urban/UrbandBm

- 53 53 BTS Output power (ERP) on BCCH frequency. BSPWR is defined at the reference point used in the locating algorithm.

53 – Dense Urban/Urban49 – Suburban/Rural/Highway

Suburban/Rural - 53 43

BSTXPWR

0 TO 80

Dense Urban/Urban

dBm

- 53 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. 53 – Dense Urban/Urban49 – Suburban/Rural/Highway

Suburban/Rural - 53 43

Locating basic ranking cell data

WHY BSPWR and BSTXPWR set to 53 and 43?

1. BTS Power Correction

Any value set will not have ping pong effect as long as BSPWR and BSTXPWR is set to the same value as describe in following equation:

SS_DOWN = Rxlev + BSTXPWR – BSPWR2.Minimum Signal Strength Condition

SS_DOWNn >=MSRXMIN SS_UPn >=BSRXMIN SS_UP = MS_PWR – L with MS_PWR = MSTXPWR = 30 (GSM1800) L = BSTXPWR – SS_DOWN (path loss correction)

With this value 53, the basic ranking will set the minimum sufficient Signal Strength to higher value thus only stronger Rxlevel neighbors only to be included in the basic ranking list. This value suitable for Dense Urban and Urban environment.

DENSE URBAN/URBAN : -75dBm While for value of 43, the basic ranking will have more space for the neighbors to be included in the basic ranking.

This value suitable for Suburban and Rural area where the site distance is big. SUBURBAN/RURAL : -85dBm

Element Range

CONDITION Unit Ericsson

DefaultAxis

Actual Opt range

Remarks

MSRXMIN 0 to 150

ALL CELLS dBm 100 94 to 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.

94 – Dense Urban96 – Urban98 - Suburban100 – Rural/Highway

BSRXMIN 0 to 150

ALL CELLS dBm 150 98 to 104 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.

98 – Dense Urban100 – Urban102 - Suburban104 – Rural/Highway

MSRXSUFF 0 to 150

ALL CELLS dBm 0 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 150 150 150

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

Element Range CONDITION Unit Default Axis

ActualOpt

Range

Remarks

TALIM 0 to 63 ALL CELLS

SACCH 62 5, 45, 62 5, 45, 62

Timing advance limit for handover. Urgency detectionparameter.

5 - High site in CBD area (>70m)45 – High site in CBD area (>70m)

PSSBQ 0 to 63 ALL CELLS dB 10 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 63

Signal strength penalty when handover due to too largetiming advance. This penalty is valid during PTIMTA.

PTIMBQ 0 to 600 ALL CELLS

Seconds 10 10 10

Penalty time when handover due to bad quality.

PTIMTA 0 to 600 ALL CELLS

Seconds 10 10 10

Penalty time when handover due to too large timingadvance.

PSSHF 0 to 63 ALL CELLS dB 63 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, apenalty is assigned to that cell to avoid that the MS returnsto it immediately. The penalties are an amount of

PTIMHF 0 to 600 ALL CELLS

Seconds 10 10 10

Penalty time at handover failure.

QLIMDL 0 to 100 GSM1800 dtqu 55 50 50Quality limit downlink for handover. Urgency detectionparameter.

QLIMUL 0 to 100 GSM1800 dtqu 55 50 50Quality limit uplink for handover. Urgency detection

QLIMULAFR 0 to 100 GSM1800 dtqu 55 55 55Uplink quality threshold for bad quality urgency handovers for AMR FR connections.

QLIMDLAFR 0 to 100 GSM1800 dtqu 55 55 55Downlink quality threshold for bad quality urgency handovers for AMR FR connections.

Locating Urgency cell data

Element Range CONDITION Unit Defau

ltAxis

ActualOpt

Range

Remarks

CELLQ HIGH, LOW ALL CELLS - HIGH 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 CELLSBit

periods (bp)

63 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 63ALL CELLS EXCEPT INDOOR

SACCH 16 24 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.

24 – 11.52 seconds before MS release the connection. This setting is an optimized setting for GSM1800 network.IF 16 then the connection will release after 7.68s, thus the different is 3.84s between default value (16) and optimized value (24)

RLINKT 8 to 64 in steps of 4

ALL CELLS EXCEPT INDOOR

SACCH 16 24 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.

24 – 11.52 seconds before MS release the connection. This setting is an optimized setting for GSM1800 network.IF 16 then the connection will release after 7.68s, thus the different is 3.84s between default value (16) and optimized value (24)

Locating MISC cell data

Element Range CONDITION Unit Defau

ltAxis

ActualOpt

Range

Remarks

RLINKUPAFR 1 to 63ALL CELLS EXCEPT INDOOR

SACCH 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.

28 – 13.44 seconds before AMR Full rate connection release on uplink.

RLINKTAFR 8 to 64 in steps of 4


SACCH 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

30 – 14.4 seconds before AMR Full rate connection release on uplink.

RLIKUPAHR 1 to 63ALL CELLS EXCEPT INDOOR

SACCH 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

28 – 13.44 seconds before AMR Half rate connection release on uplink.

RLINKTAHR 8 to 64 in steps of 4


SACCH 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

30 – 14.4 seconds before AMR Half rate connection release on uplink.

Locating MISC cell data

AMR FR and HR codec are more robust compare to normal codec thus the connection can sustain better adaptation than normal codec in bad quality environment. If we set the radio link timeout to default value or equal to normal radio link timeout, this will diminish the capability of AMR code which is robust and able to sustain in bad quality environment without jeopardizing speech quality.

Element Range CONDITION

Unit

Default Axis Actual

Opt Range

Remarks

CMDR 96, 144

ALL CELLS - 144 144 144

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 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 2. CHAP 1 – Immediate assignment on TCH, SDCCH chose first

NECI 0 and 1

ALL CELLS - 0 1 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 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.

CSPSALLOCSee

Remarks

ALL CELLS -

CSPSNOPRF

CSPSNOPRF

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 sellection is as follows: 1. CSPSNOPRF - No preference

CSPSPRIO

CSPRIO/

PSPRIO

ALL CELLS - 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.

Channel administration

Element Range Ericsson Default Axis Actual Opt Range Remarks

FPDCH

0 to 8

0 0, 1 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.

0 – When the configuration is 1 tru/cell1 – Configuration more and equal to 2

PDCHPREEMPT 0 TO 8 0 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 selection is as follows: 1. 0 - No PDCHs protected

PRIMPLIM 1 TO 8 8 8 8 PRIMPLIM defines the maximum number of dedicated and semi-dedicated PDCHs allowed in the primary PSET.

PSKONBCCH

ENABLED,

DISABLED

ENABLED ENABLED DISABLE PSKONBCCH is used to disable the use of 8PSK on the BCCH carrier.

SPDCH 0 TO 16 0 0, 1 0

Optional preference parameter for the number of semi-dedicated PDCHs

0 – When the configuration is more or equal to 2 tru/cell1 – Configuration less than 1 tru/cell

GPRSPRIO 0 TO 15 0 0 0This 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


Unit

Default Axis Actual Opt Range

Remarks

TN7BCCH EGPRS, GPRS CHGR0 - GPRS EGPRS GPRS

Indicates if Timeslot Number 7 on the BCCH frequency can be configured with TCHs supporting EGPRS and GPRS, or GPRS only.

NUMREQCS3CS4BPC 0 to 128

CHGR0

-

ON 2 2

The wanted number of BPCs in a channel group to be G-TCH. (GPRS)CHGR1 ON - -

NUMREQEGPRSBPC 0 to 128

CHGR0

-

ON 1, 2, 3, 4 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

% 100 100 100 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

TN7BCCH: GPRS –8-PSK (EDGE) would transmit at lower power than GMSK (back off power around 3dB), thus would reduced BCCH power .

Ms power controlElement Range Unit Default Axis Actual Opt

RangeRemarks

DMPSTATE: ACTIVE, INACTIVE ACTIVE ACTIVE ACTIVE

Dynamic MS power control state.

AMRPCSTATE: ACTIVE, INACTIVE ACTIVE ACTIVE ACTIVE

Dynamic MS power control state for AMR

SSDESUL 47 to 110 dBm 92 90, 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.

90 – Moderate92 – Aggressive

QDESUL 0-76 dtqu 20 30, 40 30, 40

Desired quality, uplink.


LCOMPUL 0-100 % 6 6 6

Path loss compensator factor, uplink. When set to zero, no power control towards SSDES is performed.

QCOMPUL 0-100 % 55 55, 60 55, 60

Quality deviation compensation factor, uplink. When set to zero, no quality compensation is performed.


**Different setting between rural/suburban and urban/dense urban area

Element Range Unit Default Axis Actual Opt

RangeRemarks

SSDESULAFR 47 to 110 dBm 92 90, 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.


QDESULAFR 0-76 dtqu 40 30, 40 30, 40

Desired quality, uplink for AMR FR connections.


SSDESULAHR 47 to 110 dBm 92 90, 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 calculate.


QDESULAHR 0-76 dtqu 40 30, 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 calculate.


Element RangeUnit

Default Axis Actual Opt Range

Remarks

DBPSTATE ACTIVE/INACTIVE - INACTIVE ACTIVE ACTIVE

Dynamic BTS power control state.The command RLBCI initiates BTS dynamic powercontrol in a cell. The command is valid for both underlaidand overlaid subcells.

AMRPCSTATE: ACTIVE, INACTIVE INACTIVE ACTIVE ACTIVE

Dynamic MS power control state for AMR

SDCCHREG ON, OFF - OFF OFF OFFSDCCH power control switch. Identifies if power controlon SDCCH is allowed on non-BCCH frequencies.

SSDESDL 47 to 110dBm

90 90, 92 90, 92

Defines the target value for the desired signal strength downlink as measured by the MS in different parts of thepower control interval.


LCOMPDL 0 to 100 % 5 5 5Path loss compensator factor, downlink. When set to zerothere is no power control towards SSDESDL.

QDESDL 0 to 76

dtqu

30 30, 40 30, 40

Desired quality, downlink.


QCOMPDL 0 to 60 % 55 55, 60 55, 60

Quality deviation compensation factor, downlink. Whenset to zero, no quality compensation is performed.


BTS power control

Element RangeUnit

Default Axis Actual

Opt Range

Remarks

SSDESDLAFR 47 to 110dBm

90 90, 92 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.


QDESDLAFR 0 to 76

dtqu

40 30, 40 30, 40

Desired quality, downlink for AMR FR connections.

30 – Moderate 40 – Aggressive

SSDESDLAHR 47 to 110dBm

90 90, 92 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 calculation.


QDESDLAHR 0 to 76

dtqu

30 30, 40 30, 40

Desired quality downlink for AMR HR connections.


BTS power control

Element Range

CONDITION Unit 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

Element Range CONDITIONUnit

Default Axis Actual

Remarks

LAYER 1 to 8GSM1800 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 MACROdBm

NA 110The 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 63GSM1800 MACRO d

Bm

NA 3Layer hysteresis. The signal strength hysteresis is used for ranking cells in different layers within each HCSBAND.

GSM1800 INDOOR

PSSTEMP 0 to 63GSM1800 MACRO d

Bm

NA 0 to 30Signal 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 layGSM1800 INDOOR

PTIMTEMP 0 to 600

GSM1800 MACROS 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

HCS only applicable to Indoor cell, no other Layer was defined.

Element Range CONDITION Unit

Ericsson Default Axis Actual Remarks

CLSSTATE

ACTIVE,

INACTIVE.

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. 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

Seconds

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 thehysteresis values can be reduced in the Cell load sharingevaluation.

Cell load sharing

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 LogicalChannels 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 SDCCH.

0 – Normal2 – Cell with high SD congestion

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.

20 – Normal 40 – Cell with high SD congestion

Adaptive configuration of logical channel


Unit 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


Default Axis Actual

Remarks

LA ON, OFF. ALL CELLS ON ONActivates and deactivates the feature GPRS Link Adaptation.

CHCSDLNA, 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

Gprs/edge link adaptation


Unit

Default Axis ActualRemarks

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.

3 – Normal cell5 – Congested cell

BQOFFSET 0 to 63

GSM1800 (MACRO)

dB 3

3 Signal strength region for bad quality urgency handovers.

Note: BQOFFSET is defined as a cell to cell relation andis a symmetrical parameter.MICROC

ELL STREETCELL

3

INDOOR 3

BQOFFSETAFR 0 to 63

GSM1800 (MACRO)

dB 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.

MICROCELL STREETCELL

3

INDOOR 3

locating


Default Axis Actual

Remarks

HIHYST 0 - 63

GSM1800 (MACRO)

dB 5

3, 5Signal strength hysterysis 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)

dB 3

3Signal strength hysteresis when evaluating low signal strength cells.Note: LOHYST is only valid for the Ericsson3 locating algorithm.


INDOOR 3

HYSTSEP 0 - 150

GSM1800 (MACRO)

dB 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)

dB 0

0Signal strength offset. The parameter is represented by OFFSETN, if the value isin the range (−63, -1) dB. Positive values, (0, 63) dB, is represented by OFFSETP.Note: OFFSET is only valid for the Ericsson3 locating algorithm.


INDOOR 0

Locating (ericsson3)

BSC PROPERTY RangeCONDITION 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, downlinkBADQUL-55 0 to 100 BSC dtqu 55 55 Bad quality limit for urgency condition, uplink

TBFDLLIMIT 0 to 80 BSC 20 50

When all currently allocated PDCH have the TBFDLLIMIT number of TBFs allocated an allocation attempt of more on-demand PDCH is done. If the allocation attempt fails, TBFs will be allocated on the existing PDCH, up to and including the limit of 80, when congestion occurs. Note this parameter has a decimal granularity, i.e. 20 represents value 2.0.

50 – All BSC in Jabotabek and Banten20 – All BSC in Sumatera

TBFULLIMIT 0 to 60 BSC dtqu 55 50

When all currently allocated PDCH have the TBFULLIMIT number of TBFs allocated an allocation attempt of more on-demand PDCH is done. If the allocation attempt fails, TBFs will be allocated on the existing PDCH, up to and including the limit of 80, when congestion occurs. Note this parameter has a decimal granularity, i.e. 20 represents value 2.0.

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

BSC property (main RF Related Parameters)

BSC PROPERTY RangeCONDITION Unit Default

Axis Actual Remarks

LQCACT-3 0 to 3 BSC 0 3

Controls the feature Link Quality Control in Enhanced GPRS.3 – ON for both UL and DL

EGPRSIRUL 0 to 1 BSC 1 0 Switches IR ON or OFF for the uplink. 0 –IR off UL

LQCMODEUL-0

0 to 2 BSC

0 0 Controls the aggressiveness of the LQC algorithm in the uplink.0 – LA mode is used

LQCMODEDL-1 0 to 2 BSC 0 1

Controls the aggressiveness of the LQC algorithm in the downlink.1 – LA/IR mode is used

BSC property (main RF Related Parameters)

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 Hysteresiscodec 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 Hysteresiscodec 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

AMR FR and HR Codec set

edw://alex/?ac=image&fn=248_1553-HSC10312_14Uen.A-Codec_decision.eps.pdf

Axis 2g Parameters Audit

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