QUICK WINS

It is recommended to set CRO ~12dB in collocated 1800 Band sectors, ~8dB in no collocated

1800 Band sectors and 0 dB in all 900 Band sectors. The aim is to prioritize mobiles camping in

capacity layer rather than coverage layer. ACCEPTED

We suggest to keep CRH=10 only in cells border with other BSCs and reduce CRH to a value to 6

or 8 in the remaining cells ACCEPTED

Sectors in GMS1800 band have -100 dBm set.We recommend to keep this value in GSM1800

and set -108 dBm in GSM900 LET'S DISCUSS

Suggested MSRXMIN:

Minimum: -94,Maximum: -102

Increasing average value will make HOs be done on better conditions regarding DL signal strength

from the NB. To be tuned with xParameters. ACCEPTED

Suggested BSRXMIN:

To be tuned individually with xParameter -> Min: -150 and Max:-100 ACCEPTED

DPSTATE controls the dynamic BTS power control state.For the area under study, this parameter

is ACTIVE for all cells.AMRPCSTATE ( AMR power control state) can only be active if DBPSTATE is

activated. Keeping these parameters ACTIVE for all cells is recommended ACCEPTED

DTXD: ON for all cells, except for DAR028B,DTXU: 1 for all cells: suggested to be ON

ACCEPTED

Regarding LOCATING algorithm parameters to be tuned by xParameters at ADJ level would be:

HIHYST

LOHYST

HYSSTEP

OFFSET

EVALTYPE = 3 is considered as the preferred option. ACCEPTED

LAYERTHR (signal strength threshold used

for ranking of cells in different layers) is currently set to -70 dBm for GSM 900 and -91dBm for

GSM 1800. Suggested Values:

In 1800 sectors, set to a value between [-95 to -85] to push traffic to high band. Important to

review that all sectors have a appropriate LAYER parameter ACCEPTED

A shorter interval (T3212 decrease), together with implicit detach supervision initiated in the

MSC, will reduce the number of unnecessary pagings but it leads to more signaling on the

SDCCH, thereby affecting the SDCCH dimensioning. The recommended setting of T3212 is 40;

note that the detach supervision parameter BTDM in MSC should be set equal to or longer.

LET'S DISCUSS

RLINKT/RLINKUP: Maximum 20 SACCH and current configuration RLINK(UP)TAFR and

RLINK(UP)TAHR: RLINKT/RLINKUP + 8, since AMR is more robust (under bad radio conditions).

LET'S DISCUSS

LQCMODEUL = 0 LQCMODEDL = 2 are set for all cells.We suggest to set LQCMODEUL = 1,

LQCMODEDL = 2 in all cells. ACCEPTED

LQCHIGHMCS This parameter is used to set the maximum MCS supported. PSKONBCCH is used

to disable the use of 8PSK on the BCCH carrier. The suggested configuration is:

LQCUNACK=1

LQCHIGHMCS=9

PSKONBCCH=ENABLED ACCEPTED

Parameter for the area under study is currently set to GPRSNWMODE = 2. Recommendation is

to keep this configuration. ACCEPTED

When all currently allocated PDCH have the TBFXLLIMIT 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 (60 for DL and 60 for UL), when congestion

occurs. Suggested values are: TBULLIMIT=60, TBFDLLIMIT=60. ACCEPTED

NUMREQEGPRSBPC is the wanted number of BPCs in a channel group to be E-TCH. By

aggregating them at sector level the number of EDGE TSLs enabled can be obtained. Individual

Sector Capacity Analysis should be required in order to suggest recommended values for those

parameters. ACCEPTED

If TN7BCCH is set to GPRS it is recommended to place the SDCCH on TN7 in CHGR0 to increase

the probability for consecutive PDCHs. This recommendation is not suitable if more than one

SDCCH is required per TRX or if DTM is to be used in the cell (since then it is good to use TN7 for

the CS part of the DTM connection). That is why, recommendation is to set TN7BCCH = EGPRS

for all cells. ACCEPTED

DLDELAY/ULDELAY: Defines the time to keep a downlink/uplink TBF alive after the last

downlink RLC data block with real data is sent/received (0 to 5000).

ESDELAY:Defines the time to keep an early set-up downlink TBF alive after it has been set-up (0

to 5000). Suggested values are DLDELAY=2200, ULDELAY=1500 and ESDELAY=750

ACCEPTED

SAS: single slot allocation strategy. This parameter indicates the allocation strategy for TCH

single slot allocation.This parameter (set at CHGR level) is set to SAS = QUALITY for all

CHGRs/Cells in the area under study. Recommendation is to set SAS = MULTI to increase

possibility to have consecutive TSLs available for data. ACCEPTED