SIB11 Cell Info List

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SIB11 Cell Info List

Last updated: January 15, 2009

You can specify neighbor cell information for the test set to broadcast in SIB11 on the BCCH.

There are three cell lists that the test set can send in SIB11: intra-frequency cell info list, inter-frequency cell info list and inter-

RAT (GSM) cell list. To specify the details of these cell lists, see:

Intra-frequency Cells Inter-frequency Cells GSM Cells

These settings can only be changed when the call status is idle. Changing any of these settings while in active cell operating

mode will result in the execution of the BCCH Update procedure (seeBroadcast Channel (BCCH) Update Procedure (SIB

Contents)).

You can also specify that no cell lists are included using theCell Info Listsetting.

Note that regardless of the Cell Info List setting, the test set does not actually generate any of these neighbor cells, it simply

broadcasts a list of neighbor cells to the UE. However if you set Intra-freq 1st Cell Scrambling Code to the same value as

the Primary Scrambling Code for cell 1 (seeDownlink Channel Codes and Levels), then the Intra-freq 1st neighbor cell is

mapped to the actual cell 1 signal from the test set. Also, for the lab application only, if you set Intra-freq 2nd Cell

Scrambling Code to the same value as Cell2 Primary Scrambling Code then theIntra-freq 2nd neighbor cell is mapped to the

actual cell 2 signal from the test set. Mapping the intra-frequency neighbor cells to cell 1 and cell 2 in this way allows you to

most closely emulate a real network situation. Also, for some devices, mapping cell 2 in this way may be required to allow

successful soft handover (seeSome UEs require Cell 2 Primary Scrambling Code = Intra Freq 2nd Cell Scrambling Code)

Cell Numbering Convention

Note, the information specified by Intra-freq 1st Cell State and Intra-freq 1st Cell Scrambling Code is transmitted in SIB11

as the information pertaining to "intra-frequency cell id" = 0 , as the "intra-frequency cell id" Information Element begins itsnumbering at 0; see 3GPP TS 25.331 10.3.7.33). Likewise, the information specified by Intra-freq 2nd Cell State and Intra-

freq 2nd Cell Scrambling Code is transmitted in SIB11 as the information pertaining to "intra-frequency cell id" = 1 , etc. If youset the state of a cell to Off , then no information is sent for the "intra-frequency cell id" corresponding to that cell. This

numbering convention is also true for the "inter-frequency cell id" for inter-frequency cells (see 3GPP TS 25.331 10.3.7.13) and

"inter-RAT cell id" for GSM cells (see 3GPP TS 25.331 10.3.7.23).

Cell Lists

Intra-frequency CellsIntra-frequency cells are WCDMA neighbor cells on the same frequency as the serving cell, but with a different primary

scrambling code.

The intra-frequency cell info list sent in SIB11 can include up to 8 cells, indexed from 0 to 7.

o Intra-freq Cell StateYou can specify that some or all of the 8 intra-frequency neighbor cells are present ( Intra-freq Cell

State = On ) or not present ( Intra-freq Cell State =Off ) in the intra-frequency cell info list.

GPIB command:CALL[:CELL]:BCCHannel:ITAFrequency:STATe

o Intra-freq Cell Scrambling CodeYou can specify each intra-frequency cell's primary scrambling code. You may include the serving cell (test set) in

the intra-frequency cell info list by including its primary scrambling code as one of the Intra-freq Cell

Scrambling Code entries.

GPIB command:CALL[:CELL]:BCCHannel:ITAFrequency:SCODe

o Intra-freq Cell Cell Reselection Offset1In the lab application only, this setting specifies the Qoffset1 value signalled for each intra-frequency cell (see3GPP TS 25.304 s5.2.6.1.4). This setting is only used by the UE whenQuality Measureis set to CPICH RSCP.

GPIB command:CALL[:CELL]:BCCHannel:ITAFrequency:CRESelection:OFFSet[1]
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o Intra-freq Cell Cell Reselection Offset2In the lab application only, this setting specifies the Qoffset2 value signalled for each intra-frequency cell (see

3GPP TS 25.304 s5.2.6.1.4). This setting is only used by the UE whenQuality Measureis set to CPICH Ec/N0.

GPIB command:CALL[:CELL]:BCCHannel:ITAFrequency:CRESelection:OFFSet2

Inter-frequency CellsInter-frequency cells are W-CDMA neighbor cells on a different frequency than the serving cell, and possibly with adifferent primary scrambling code.

The inter-frequency cell info list sent in SIB11 can include up to 8 cells, indexed from 0 to 7.

o Inter-freq Cell StateYou can specify that some or all of the 8 inter-frequency neighbor cells are present ( Inter-freq Cell

State = On ) or not present ( Intra-freq Cell State =Off ) in the inter-frequency cell info list.

GPIB command:CALL[:CELL]:BCCHannel:ITRFrequency:STATe

o Inter-freq Cell Scrambling CodeYou can specify each inter-frequency cell's primary scrambling code.

GPIB command:CALL[:CELL]:BCCHannel:ITRFrequency:SCODe

o Inter-freq Cell DL ChannelYou can specify each inter-frequency cell's downlink channel.

GPIB command:CALL[:CELL]:BCCHannel:ITRFrequency:DOWNlink:CHANnel

o Inter-freq Cell Cell Reselection Offset1In the lab application only, this setting specifies the Qoffset1 value signalled for each inter-frequency cell (see

3GPP TS 25.304 s5.2.6.1.4). This setting is only used by the UE whenQuality Measureis set to CPICH RSCP.

GPIB command:CALL[:CELL]:BCCHannel:ITRFrequency:CRESelection:OFFSet[1]

o Inter-freq Cell Cell Reselection Offset2In the lab application only, this setting specifies the Qoffset2 value signalled for each inter-frequency cell (see

3GPP TS 25.304 s5.2.6.1.4). This setting is only used by the UE whenQuality Measureis set to CPICH Ec/N0.

GPIB command:CALL[:CELL]:BCCHannel:ITRFrequency:CRESelection:OFFSet2

GSM CellsThe inter-RAT cell list sent in SIB 11 can include up to 8 GSM cells, indexed from 0 to 7.

o GSM Cell StateYou can specify that some or all of the 8 inter-RAT neighbor cells are present ( GSM Cell State = On ) or

not present ( GSM Cell State = Off ) in the inter-RAT cell list.

GPIB command:CALL[:CELL]:BCCHannel:GSMSystem:STATe

o GSM Cell NCCYou can specify each GSM cell's NCC.

GPIB command:CALL[:CELL]:BCCHannel:GSMSystem:NCC

o GSM Cell BCCYou can specify each GSM cell's BCC.

GPIB command:CALL[:CELL]:BCCHannel:GSMSystem:BCC
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o GSM Cell Shared ARFCN IndicatorYou can specify each GSM cell's Shared ARFCN Indicator.

GPIB command:CALL[:CELL]:BCCHannel:GSMSystem:BAND

o GSM Cell BCH ARFCNYou can specify each GSM cell's BCH ARFCN.

GPIB command:CALL[:CELL]:BCCHannel:GSMSystem:BCHannel

o GSM Cell Cell Reselection Min Rx LevelThis parameter is only available in the lab application.

This parameter sets 3GPP TS 25.331 s10.3.2.3 "Qrxlevmin" for GSM in the "Cell selection and re-selection info

for SIB11/12" information element (see 25.331 s10.3.2.4). According to 3GPP TS 25.304 s5.2.6.1.4, Qrxlevmin isthe "minimum required RX level in the cell (dBm)". For GSM cells, the UE compares the RSSI it measures for the

cell with Qrxlevmin to determine if it may select/reselect to the cell. (Note that this is similar to the

RXLEV_ACCESS_MIN parameter defined in 3GPP TS 44.018 s10.5.2.4 and 45.008 s6.4 and s9.)

GPIB command:CALL[:CELL]:BCCHannel:GSMSystem:CRESelection:RLMinimum

You can specify whether or not the test set broadcasts these neighbor cell lists in SIB11 using the following setting:

Cell Info ListYou may set this setting to Present (all three neighbor cell lists are included in SIB11) or Absent (no neighbor cell lists

are included in SIB11).

GPIB syntax:CALL[:CELL]:BCCHannel:CELLlist
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