3.26 GSM - UMTS Cell Reselection and Handover

3.26.1 BSC Exchange Property Data

COEXUMTS

Type: Numeral Range: 0 to 4 Unit: - Default: 0 Command: RAEPC, RAEPP O&M: - Comments: Support for Coexistence of GSM and UMTS 0 OFF 1 ON: Feature GSM-UMTS Cell

Reselection and Handover is activated

2 ONADDINFO: Feature GSM-UMTS Cell Reselection and Handover and feature Combined Cell Reselection Trigger GSM to WCDMA are activated.

3 ONADDINFO; GSM-UMTS Cell Reselection and Handover and Combined Handover Triggering GSM to WCDMA are activated

4 ONADDINFO; GSM-UMTS Cell Reselection and Handover, Combined Cell Reselection Triggering GSM to WCDMA and Combined Handover Triggering GSM to WCDMA are activated

COEXUMTSINT

Type: Numeral Range: 100 to 1000 Unit: ms Default: 1000 Command: RAEPC, RAEPP O&M: - Comments: Time interval between traffic load

checking.

COEXUMTSLSH

Type: Numeral Range: 0 to 1 Unit: - Default: 0 Command: RAEPC, RAEPP O&M: - Comments: This parameter enables and disables the feature Smooth GSM to WCDMA

unloading.

0 = Feature not enabled

1 = Feature enabled

SBHOACTIVE

Type: Numeral Range: 0, 1 Unit: - Default: 0 Command: RAEPC, RAEPP O&M: - Comments: This parameter enables and disables the feature Handover with Usage of

Service Indicator.

0 = Feature not enabled

1 = Feature enabled

3.26.2 GSM - UMTS Cell Reselection - Cell Data

Note: The settings of the following parameters only affect Multi-RAT FDD UMTS capable MSs.

UMFI

Type: MFDDARFCN-MSCRCODE-DIVERSITY Range: MFDDARFCN: 0 to 16383

MSCRCODE: 0 to 511

DIVERSITY: DIV or NODIV Unit: - Default: - Command: RLUMC, RLUMP

O&M: - Comments: UTRAN Measurement Frequency Information for cell reselection

in GSM Idle Mode and GPRS/EGPRS Ready and Standby states.

(MFDDARFCN-MSCRCODE-DIVERSITY) defines the frequency, scrambling code and diversity information for a UTRAN neighbouring cell.

MFDDARFCNMFDDARFCN indicates the absolute RF channel number of the neighbouring UTRAN cell to be measured on by Multi-RAT MSs. Several frequency bands exist and the absolute RF channel number represents the center frequency within the frequency band. Allowed frequency bands and absolute RF channel numbers are described in detail in Reference [5].

MSCRCODE is the scrambling code for the neighbouring cell. The scrambling code has 512 values.

DIVERSITY indicates if diversity is applied for the UTRAN cell, or not.

FDDQMIN

Type: Numeral Range: 0 to 7 Unit: dB Default: 0 Command: RLSUC, RLSUP O&M: - Comments: Minimum FDD quality.

Defines the minimum threshold for the "quality" measure Ec/No for cell reselection to UTRAN cells.

0 -20 dB 1 -6 dB 2 -18 dB 3 -8 dB 4 -16 dB 5 -10 dB 6 -14 dB 7 -12 dB.

FDDQOFF

Type: Numeral Range: 0 to 15 Unit: dB Default: 8 Command: RLSUC, RLSUP

O&M: - Comments: FDD quality offset.

Defines the inter-system cell reselection offset to UTRAN cells.

0 -infinite, always select UTRAN FDD cell if acceptable

1 -28 dB 2 -24 dB ... 15 +28 dB.

SPRIO

Type: Identifier Range: NO, YES Unit: - Default: NO Command: RLSUC, RLSUP O&M: - Comments: Search priority.

Indicates if 3G cells may be searched when BSIC decoding is required.

NO Multi-RAT MS may not use the search frames required for BSIC decoding, for UTRAN FDD measurements.

YES Multi-RAT MS may use up to 25 search frames per 13 seconds without considering the need for BSIC decoding in these frames.

QSI

Type: Numeral Range: 0 to 15 Unit: dBm Default: 15 Command: RLSUC, RLSUP O&M: - Comments: GSM-UMTS cell reselection quality search indicator.

Indicates the threshold to start UTRAN FDD measurements in Idle mode and Stand-by and Ready states.

When the parameter value is between 0 and 6, the UTRAN FDD measurements are started when the serving cells' signal strength is below the threshold.

When the parameter value is between 8 and 14, the UTRAN FDD measurements are started when the serving cells' signal strength is above the threshold.

0 -98 dBm 1 -94 dBm ... 6 -74 dBm 7 always 8 -78 dBm 9 -74 dBm ... 14 -54 dBm 15 never

FDDQMINOFF

Type: Numeral Range: 0 to 7 Unit: dB Default: 0 Command: RLSUC, RLSUP O&M: - Comments: Minimum FDD quality offset.

Defines an offset to the value of FDDQMIN. 0 0 dB 1 2 dB 2 4 dB 3 6 dB 4 8 dB 5 10 dB 6 12 dB 7 14 dB

FDDRSCPMIN

Type: Numeral Range: 0 to 15 Unit: dB Default: 6 Command: RLSUC, RLSUP O&M: - Comments: Minimum FDD RSCP.

Defines the minimum threshold of Received Signal Code Power (RSCP) for cell reselection to UTRAN FDD.

0 -114 dB 1 -112 dB 2 -110 dB 3 -108 dB 4 -106 dB 5 -104 dB 6 -102 dB 7 -100 dB 8 -98 dB 9 -96 dB 10 -94 dB 11 -92 dB 12 -90 dB 13 -88 dB 14 -86 dB 15 -84 dB

3.26.3 GSM - UMTS Handover - UTRAN Cell Data

CELL

Type: String Range: 1 to 7 characters except ALL Unit: - Default: - Command: All commands where a specific cell is

pointed out.

Cell definition: RLDEI O&M: - Comments: Cell name of a external UTRAN cell. As

UTRAN cells cannot belong to any GSM BSC, they have always to be defined as external.

NEWNAME

Type: String Range: 1 to 7 characters except ALL Unit: - Default: - Command: RLDEC O&M: - Comments: The parameter is used to change the

name of a cell. See parameter CELL for recommendations.

FDDARFCN

Type: Numeral Range: 0 to 16383 Unit: - Default: - Command: RLDEC, RLDEP O&M: - Comments: Absolute RF channel number of the external UTRAN cell.

The parameter indicates the absolute RF channel number of the neighbouring UTRAN cell in GSM active mode. Several frequency bands exist and the absolute RF channel number represents the center frequency within the frequency band. Allowed frequency bands and absolute RF channel numbers are described in detail in Reference [5].

SCRCODE

Type: Numeral Range: 0 to 511 Unit: - Default: - Command: RLDEC, RLDEP O&M: - Comments: The scrambling code of the external

UTRAN cell:

UTRANID

Type: RNCID-CI-MCC-MNC-LAC Range: RNCID: 0 to 4095

CI: 0 to 65535 Unit: - Default: - Command: RLDEC, RLDEP O&M: - Comments: Identity of the external UTRAN cell:

Consists of the Radio Network Controller Identity (RNCID), Cell Identity within the RNC (CI), Mobile Colour Code (MCC), Mobile Network Code (MNC) and the Location Area Code (LAC). MCC, MNC and LAC have the same value ranges as used for the parameter CGI, see CGI-1.

MRSL

Type: Numeral Range: 0 to 49 Unit: - Default: - Command: RLDEC, RLDEP O&M: - Comments: Minimum reported signal level.

Within the locating algorithm, the measured energy per chip on the Common Pilot Channel (CPICH Ec/No) a UTRAN cell is compared with the minimum quality threshold defined by MRSL. Only if this criterion is fulfilled, handovers to the UTRAN cell are possible. The values are:

0 MRSL < -24 dB 1 -24 dB <= MRSL < -23.5 dB ... 48 -0.5 dB <= MRSL < 0 dB 49 0 <= MRSL

3.26.4 GSM - UMTS Handover - GSM Cell Data

ISHOLEV

Type: Numeral Range: 0 to 99 Unit: % Default: 20 Command: RLLOC, RLLOP O&M: - Comments: Inter-system handover load threshold.

Inter system handover evaluaions start when the percentage of idle full rate Traffic Channels (TCHs) left in the cell is less than or equal to this value given as percentage.

FDDMRR

Type: Numeral Range: 0 to 3 Unit: - Default: 0 Command: RLSUC, RLSUP O&M: -

Comments: Multi-Rat reporting.

FDDMRR defines how many measured neighbouring UTRAN cells should be included in measurement reports. The remaining positions in measurement reports will be used for reporting GSM cells according to the parameter MBCR, see MBCR. If there are still remaining positions, these are used to report next best valid cells in other radio access technologies.

FDDMRR is not changeable if a GSM-UMTS Active BA-list Recording or a Competitor Coverage Evaluation Active BA-list Recording is ongoing.

QSC

Type: Numeral Range: 0 to 15 Unit: dBm Default: 15 Command: RLSUC, RLSUP O&M: - Comments: GSM-UMTS handover quality search indicator.

Indicates the threshold to start UTRAN FDD measurements in Active mode.

When the parameter value is between 0 and 6, the UTRAN FDD measurements are started when the serving cells' signal strength is below the threshold.

When the parameter value is between 8 and 14, the UTRAN FDD measurements are started when the serving cells' signal strength is above the threshold.

0 -98 dBm 1 -94 dBm ... 6 -74 dBm 7 always 8 -78 dBm 9 -74 dBm ... 14 -54 dBm 15 never

QSCI

Type: Numeral Range: 0, 1 Unit: - Default: 0 Command: RLSUC, RLSUP O&M: - Comments: Initial Quality search indicator.

QSCI defines the control of UTRAN measurements after entering active mode, before reading the first QSC.

0 UTRAN measurements are performed according to QSI until the first QSC is read.

1 UTRAN measurements are always performed until the first QSC is read.

MAXISHO

Type: Numeral Range: 1–100 Unit: - Default: 2 Command: RLLOC, RLLOP O&M: - Comments: Defines maximum number of load triggered outgoing inter system

handovers per second from the specified cell

FDDREPTHR2

Type: Numeral Range: 0-63 Unit: dBm Default: 0 Command: RLSUC, RLSUP O&M: - Comment: Minimum FDD RSCP reporting threshold.

Defines a threshold for the non reported 'signal strength' measure CPICH RSCP of UTRAN cells. The MS includes a UTRAN cell in the measurement reports only if the non reporting threshold is exceeded.(1)

0 Disabled 1 115 dBm 2 114 dBm ... ...

62 54 dBm 63 53 dBm

(1) The reporting entity in the measurement reports is CPICH Ec/No.

3.26.5 GSM - UMTS Handover - Neighbouring Cell Relation Data

There are no neighbor relation specific parameters that can be defined for each GSM - UMTS neighbouring cell relation. It is possible to define up to 64 UTRAN neighbours in addition to 64 GSM neighbours for each GSM cell. A total of up to 16384 UTRAN neighbouring cell relations can be defined per BSC.

CELLR

Type: String Range: 1 to 7 characters except ALL Unit: - Default: - Command: RLNRI, RLNRE, RLNRP, RLNCP O&M: - Comments: Related cell designation.

The identity of the neighbouring UTRAN is specified by means of CELLR.