IRAT TT Strategy Ericsson Parameters
Transcript of IRAT TT Strategy Ericsson Parameters
IDLE AND PACKET CONNECTED MODE
GSM to UMTS Strategy: Go to WCDMA whenever WCDMA Coverage is available
GSM Parameters Default Value Value to be implemented CommentFDDQMIN 0 (-20dB) 7 (-12dB)FDDQOFF 8 (0dB) 0 (-inf --> disable)
QSI 15 (never) 7 (always)COEXUMTS 0 (OFF) 1 (ON)
FDDQMINOFF 0 (0dB) 0 (0 dB)
FDDRSCPMIN 6 (-102 dBm) 6 (-102 dBm)
UMTS to GSM Strategy : Reselection to WCDMA when very bad radio conditions
Ericsson Default Parameters serve TT Strategy
If Combined Cell Reselection triggering GSM to WCDMA enabled if
COEXUMTS=2
UMFI (MFDDARFCN- MSCRCODE- DIVERSITY)
defines the frequency, scrambling code and diversity information for a
UTRAN neighbouring cell.(MFDDARFCN: 0 to 16383
MSCRCODE: 0 to 511 DIVERSITY: DIV, NODIV)
FDDQMIN : defines the minimum threshold for the “quality” measure Ec/No for cell reselection to UTRANFDDQOFF : defines cell reselection offset to UTRAN cellsQSI : defines when the monitoring of UMTS cells will be performed. Quality search indicator Qsearch_I for idle mode.COEXUMTS: used to determine if cell reselection and handovers from GSM to UMTS is allowed
For Ericsson 2g BSS:
RLSUP:CELL=ALL; This command prints system information UTRAN data for all internal cells in the BSC.
CS CONNECTED MODE
GSM to UMTS Strategy: No HO towards WCDMA terminate voice call in GSM
GSM Parameters Default Value Value to be implementedQSC 15 (never) 15 (never)QSCI 0 1 (QSC value)
FDDARFCNUTRAN neighbour info SCRCODE
UTRANID (RNCID-CI-MCC-MNC-LAC)
UMTS to GSM Strategy : HO when WCDMA when very bad radio conditions
Ericsson Default Parameters serve TT Strategy
QSC: defines when the monitoring of UMTS cells will be performed (Active mode threshold Qsearch_C) QSCI: defines the control of UTRAN measurement after entering active mode (Active mode threshold initial (Qsearch_C_Initial))
For Ericsson 2g BSS: RLSUP:CELL=ALL; This command prints system information UTRAN data for all internal cells in the BSC.