Modify a Neighboring GSM Cell for a WCDMA Cell

7/28/2019 Modify a Neighboring GSM Cell for a WCDMA Cell.

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Modi fy GSM Neighboring Cell(MOD U2GNCELL)

Function

Modify a neighboring GSM cell for a WCDMA cell.

The basic information on the GSM cell is modified by MOD UEXT2GCELL. Here, the information to be modified refers to the information on the neighboring relationship. For details, refer

to the parameter description.

Note

1. Before this command is executed, the neighboring relationship between the specified WCDMA cell and its neighboring GSM cells must have been configured by ADD U2GNCEL L.

2. When the Neighbouring Cell Priority Flag is TRUE, the priority of the neighbouring cell must be different with each other.

3. To the single host cell or the primary host cell, the RncId is the current RncId. To the secondary host, the RncId is the RncId of the correspondingly primary host cell.

4. To the double host cell, only the primary host cell can be configured and the secondary host cell can not be configured.

Parameter

Par am et er ID Param et er Nam e Par am et er Des crip tio n

RNCId RNC ID Meaning: Uniquely identifying an RNC.

GUI Value Range: 0~4095

Actual Value Range: 0~4095

Unit: None

Default Value: None

Recommended Value: None

CellId Cell ID Meaning: Uniquely identifying a WCDMA cell, to which neighboring GSM cells can be added.



Unit: None

Default Value: None


GSMCellIndex GSM cell index Meaning: Uniquely identifying a GSM cell.



Unit: None

Default Value: None


CIOOffset Neighboring celloriented CIO[dB]

Meaning: Cell individual offset for the GSM cell, which is set according to the topographic feature.

This parameter is used for decision making for the inter-RAT handover. The larger the value of the parameter, the higher the handoverpriority of the GSM cell. The smaller the value of the parameter, the lower the handover priority of the GSM cell.

GUI Value Range: -50~50

Actual Value Range: -50~50

Unit: dB

Default Value: None

Recommended Value: 0

Qoffset1sn Qoffset1sn[dB] Meaning: Offset between the neighboring GSM cell and WCDMA cell.

This specifies the offset of the measurement value of the neighboring GSM cell signal quality. This parameter is used for RSSImeasurement. The offset is subtracted from the neighboring cell measurement value before cell reselection.

In cell reselection algorithm, this parameter is used for moving the border of a cell. Content: During cell selection or resection, the largerthe value of the parameter, the smaller the probability of selecting inter-RAT neighboring cells. The smaller the value of the parameter, thelarger the probability of selecting inter-RAT neighboring cells. This parameter can be configured by the network planner according toreality.

For details, refer to 3GPP TS 25.331.

As for the impact on network performance:

The larger the value of the parameter, the lower the probability of selecting neighboring cells. The smaller the value the parameter, thehigher the probability of doing so.



Unit: dB

Default Value: None


Qrxlevmin Min RX level[dBm] Meaning: Minimum RX level of the GSM cell.

Before the UE camps on the cell, take the measurement of the signal quality in the cell. If the quality is better than this parameter, this

indicates that the cell can obtain better QoS and the UE is allowed to camp on this cell. Otherwise, the UE cannot obtain good QoS in thiscell and does not camp on the cell.

GUI Value Range: -58~-13

Actual Value Range: -115~-25, step:2 Actual value =-115 +(58 +GUI value) * 2

Unit: dBm

Default Value: None

Recommended Value: -50

TpenaltyHcsReselect HCS Cell ReselectPenalty Timer[s]

Meaning: HCS cell reselection penalty timer.

The larger the value of the parameter, the longer the HCS penalty time. The smaller the value of the parameter, the shorter the HCSpenalty time.

GUI Value Range: D0, D10, D20, D30, D40, D50, D60

Actual Value Range: 0, 10, 20, 30, 40, 50, 60

Unit: s

Default Value: None

Recommended Value: D0

fy GSM Neighboring Cell(MOD U2GNCELL) http://127.0.0.1:52199/hedex/pages/31183950/02%20(2009-10-

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TempOffset1 HCS Cell ReselectTempOffset1[dB]

Meaning: Offset of HCS cell CPICH RSCP measurement value in cell selection or reselection.

The larger the value of the parameter, the lower the probability of selecting neighboring cells. The smaller the value of the parameter, thehigher the probability of doing so.

GUI Value Range: D3~0 D6~1 D9~2 D12~3 D15~4 D18~5 D21~6 INFINITY

Actual Value Range: 3, 6, 9, 12, 15, 18, 21, INFINITY

Unit: dB

Default Value: None

Recommended Value: D3

BlindHoFlag Blind handover flag Meaning: Indicating whether to perform blind handover.

FALSE: The cell is not in the alternative cells for blind handover, so blind handover to this cell cannot be triggered.

TRUE: The cell is in the alternative cells for blind handover, so blind handover to this cell might be triggered.GUI Value Range: FALSE, TRUE

Actual Value Range: FALSE, TRUE

Unit: None

Default Value: None

Recommended Value: FALSE

BlindHOPrio Blind handover Priority Meaning: Indicating the priority of blind handover.

The value 0 represents the highest priority. Priorities 0~15 are assigned to concentric neighboring cells, which can ensure successfulhandover. Priorities 16~30 are assigned to neighboring cells for blind handover, which cannot ensure successful handover.



Unit: None

Default Value: None


DRDEcN0Threshhold Drd Ec/N0threshold[dB]

Meaning: This parameter is used as the DRD Ec/No threshold of whether to perform the blind handover.

This parameter is used as the DRD Ec/No threshold of whether to perform the blind handover. When choosing a DRD candidate cell, if theEc/No value of the current cell is greater than the threshold of inter-RAT/inter-frequency neighboring cell, the DRD is permitted.



Unit: dB

Default Value: None

Recommended Value: -18

SIB11Ind SIB11 Indicator Meaning: Flag of whether to include this neighboring relationship in the System Information Block 11 (SIB11).

This parameter indicates whether the neighboring cell information is delivered in SIB11. FALSE: not to include the neighboring informationin the SIB11. TRUE: to include the neighboring information in the SIB11.

GUI Value Range: FALSE(Do not send), TRUE(Send)


Unit: None

Default Value: None

Recommended Value: TRUE

SIB12Ind SIB12 Indicator Meaning: Flag of whether to include this neighboring relationship in the System Information Block 12 (SIB12).

This parameter indicates whether the neighboring cell information is delivered in SIB12. FALSE: not to include the neighboring informationin the SIB12. TRUE: to include the neighboring information in the SIB12.

GUI Value Range: FALSE(Do not send), TRUE(Send)Actual Value Range: FALSE, TRUE

Unit: None

Default Value: None


NPrioFlag The flag of the priority Meaning: Priority identifier of neighboring cells.

TRUE indicates that the neighboring cell priority is valid in the algorithm of neighboring cell combination. FALSE indicates that theneighboring cell priority is invalid, and, in the algorithm of neighboring cell combination, the cell with invalid priority is the last one to beconsidered as the measurement object.

GUI Value Range: FALSE, TRUE


Unit: None

Default Value: None


NPrio The priority of neighbor cell

Meaning: Priority of neighboring cells.

The priority that corresponds to the neighboring cell is valid only when the this parameter is set to TRUE. The lower the priority, the easierit is for the neighboring cell to be delivered as the measurement object. For example, it is more possible for a neighboring cell of priority 1

than a cell of priority 2 to be delivered as the measurement object.GUI Value Range: 0~31


Unit: None

Default Value: None


MBDRFlag The flag of the MBDR Meaning: Priority identifier of MBDR(Measure-Based Directed Retry) cells.

TRUE indicates that the MBDR cell priority is valid in the cell-oriented measurement-based DRD algorithm, and the cell can be consideredas the measurement object. FALSE indicates that the MBDR cell priority is invalid.

GUI Value Range: FALSE(Do not send), TRUE(Send)


Unit: None

Default Value: None



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MBDRPrio The priority of MBDRneighbor cell

Meaning: Priority of MBDR(Measure-Based Directed Retry) cells.

The priority that corresponds to the MBDR cell is valid only when the MBDRFlag parameter is set to TRUE. The lower the priority, theeasier it is for the MBDR cell to be delivered as the measurement object. For example, it is more possible for a MBDR cell of priority 1than a cell of priority 2 to be delivered as the measurement object.



Unit: None

Default Value: None


Example

Modi f y a nei ghbor i ng GSM cel l of WCDMA cel l 1 i n RNC 1. Thi s GSM cel l i ndex i s 0. I t s basi c i nfor mati on i s conf i gur ed byADD UEXT2GCELL.1. Cel l i ndi v idual of f set: 2 dB2. Bl i nd handover f l ag: TRUE3. Bl i nd handover pri ori ty: 2Execut e t he f ol l owi ng command:MOD U2GNCELL: RncI d=1, Cel l I d=1, GSMCel l I ndex=0, CI OOf f set =2, Bl i ndHoFl ag=TRUE, Bl i ndHOPr i o=2;

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8/19/2010

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Modify a Neighboring GSM Cell for a WCDMA Cell