11.2.4 Packet Cell Change Order

04.603GPPGeneral Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 1999TS

This message is sent on the PCCCH or PACCH by the network to the mobile station to command the mobile station to leave the current cell and change to a new cell. For a (3G) multi-RAT mobile station the new cell may be a 3G Cell.

Message type: PACKET CELL CHANGE ORDER

Direction: network to mobile station

Classification: non-distribution message

Table 11.2.4.1: PACKET CELL CHANGE ORDER message content

< Packet Cell Change Order message content > ::=

< PAGE_MODE : bit (2) >

{ { 0 < Global TFI : < Global TFI IE > >

| 10 < TLLI : bit (32) > }

{ 0

{ < IMMEDIATE_REL : bit >
< GSM target cell: < GSM target cell struct >>

! < Non-distribution part error : bit (*) = < no string > > }

| 1

{ 00 — Message escape

{ < IMMEDIATE_REL : bit >

< 3G-target cell: < 3G-target cell struct >>

! < Non-distribution part error : bit (*) = < no string > > }

! < Message escape : { 01 | 10 | 11} bit (*) = <no string> > } }

! < Address information part error : bit (*) = < no string > > }

! < Distribution part error : bit (*) = < no string > > ;

< GSM target cell struct > ::=

< ARFCN : bit (10) >

< BSIC : bit (6) >

< NC Measurement Parameters : < NC Measurement Parameters struct > >

{ null | 0 bit ** = < no string > — Receiver compatible with earlier release

| 1 — Additions in release 98 :

{ 0 | 1 < LSA Parameters : < LSA Parameters IE >> }

{ null | 0 bit ** = < no string > — Receiver compatible with earlier release

| 1 — Additions in release 99 :

< ENH Measurement parameters : < ENH Measurement parameters struct > >

< padding bits > } } ;

< 3G-target cell struct > ::=

{ 0 | 1 < FDD-ARFCN : bit (14) > — 3G UTRAN FDD

< Diversity : bit >

{ 0 | 1 < Bandwidth_FDD : bit (3) > }

< SCRAMBLING_CODE : bit (9) > }

{ 0 | 1 < TDD-ARFCN : bit (14) > — 3G UTRAN TDD

< Diversity : bit >

{ 0 | 1 < Bandwidth_TDD : bit (3) > }

< Cell Parameter : bit (7) >

< Sync Case : bit > }

< padding bits > ;

< NC Measurement Parameters struct > ::=

< NETWORK_CONTROL_ORDER : bit (2) >

{ 0 | 1 < NC_NON_DRX_PERIOD : bit (3) >

< NC_REPORTING_PERIOD_I : bit (3) >

< NC_REPORTING_PERIOD_T : bit (3) > }

{ 0 | 1 < NC_FREQUENCY_LIST : NC Frequency list struct > } ;

< NC Frequency list struct > ::=

{ 0 | 1 < NR_OF_REMOVED_FREQ : bit (5) >

{ < REMOVED_FREQ_INDEX : bit (6) > } * (1 + val(NR_OF_REMOVED_FREQ)) }

{ 1 < List of added Frequency : < Add Frequency list struct > >} ** 0;

< Add Frequency list struct > ::=

< START_FREQUENCY : bit (10) >

< BSIC : bit (6) >

{ 0 | 1 < Cell selection params : < Cell Selection struct > > }

< NR_OF_FREQUENCIES : bit (5) >

< FREQ_DIFF_LENGTH : bit (3) >

{ < FREQUENCY_DIFF : bit (val(FREQ_DIFF_LENGTH)) >

< BSIC : bit (6) >

{ 0 | 1 < Cell selection params : < Cell Selection struct > > } } * (val(NR_OF_FREQUENCIES)) ;

< Cell Selection struct > ::=

< CELL_BAR_ACCESS_2 : bit (1) >

< EXC_ACC : bit >

< SAME_RA_AS_SERVING_CELL : bit (1) >

{ 0 | 1 < GPRS_RXLEV_ACCESS_MIN : bit (6) >

< GPRS_MS_TXPWR_MAX_CCH : bit (5) > }

{ 0 | 1 < GPRS_TEMPORARY_OFFSET : bit (3) >

< GPRS_PENALTY_TIME : bit (5) > }

{ 0 | 1 < GPRS_RESELECT_OFFSET : bit (5) > }

{ 0 | 1 < HCS params : < HCS struct > > }

{ 0 | 1 < SI13_PBCCH_LOCATION : < SI13_PBCCH_LOCATION struct > > } ;

< SI13_PBCCH_LOCATION struct > ::=

{ 0 < SI13_LOCATION : bit (1) >

| 1 < PBCCH_LOCATION : bit (2) >

< PSI1_REPEAT_PERIOD : bit (4) > } ;

< HCS struct > ::=

< PRIORITY_CLASS : bit (3) >

< HCS_THR : bit (5) > ;

< ENH Measurement parameters struct > :: =

{ 0 < BA_IND : bit > < 3G_BA_IND : bit > | 1 < PSI3_CHANGE_MARK : bit(2) > }

< PMO_IND : bit >
< REPORT_TYPE : bit >

< REPORTING_RATE : bit >
< INVALID_BSIC_REPORTING : bit >
{ 0 | 1 < 3G Neighbour Cell Description : < 3G Neighbour Cell Description struct >> }

{ 0 | 1 < GPRS REP PRIORITY Description : < GPRS REP PRIORITY Description struct >> }

{ 0 | 1 < GPRS MEASUREMENT Parameters Description : < GPRS MEASUREMENT PARAMETERS Description struct >> }

{ 0 | 1 < GPRS 3G MEASUREMENT Parameters Description : < GPRS 3G MEASUREMENT PARAMETERS Description struct >> } ;

< 3G Neighbour Cell Description struct > ::=

 0 | 1 < Index_Start_3G : bit (7) > }
 0 | 1 < Absolute_Index_Start_EMR : bit (7) > }
{ 0 | 1 < UTRAN FDD Description : < UTRAN FDD Description struct >> }
{ 0 | 1 < UTRAN TDD Description : < UTRAN TDD Description struct >> }
{ 0 | 1 < REMOVED_3GCELL_Description : < REMOVED_3GCELL_Description struct >> } ;

< REMOVED_3GCELL_Description struct > ::=

< N1 : bit (2) >

{ < N2 : bit (5) >

{ < REMOVED_3GCELL_INDEX : bit (7) >
< 3G_CELL_DIFF_LENGTH : bit (3) >

< 3GCELL_DIFF : bit (val(3G_CELL_DIFF_LENGTH)) >

} * (1+val(N2))

} * (1+val(N1)) ;

< UTRAN FDD Description struct > ::=

{ 0 | 1 < Bandwidth_FDD : bit (3) > }
{ 1 < Repeated UTRAN FDD Neighbour Cells : < Repeated UTRAN FDD Neighbour Cells struct >> } ** 0 ;

< Repeated UTRAN FDD Neighbour Cells struct > ::=
0 < FDD-ARFCN : bit (14) > — The value ‘1’ was used in an earlier

version of the protocol and shall not be used.
< FDD_Indic0 : bit >
< NR_OF_FDD_CELLS : bit (5) >
< FDD_CELL_INFORMATION Field : bit(p(NR_OF_FDD_CELLS)) > ; — p(x) defined in table 11.2.9b.2.a/3GPP TS 04.60

< UTRAN TDD Description struct > ::=

{ 0 | 1 < Bandwidth_TDD : bit (3) > }
{ 1 < Repeated UTRAN TDD Neighbour Cells : < Repeated UTRAN TDD Neighbour Cells struct >> } ** 0 ;

< Repeated UTRAN TDD Neighbour Cells struct > ::=
0 < TDD-ARFCN : bit (14) > — The value ‘1’ was used in an earlier

version of the protocol and shall not be used.
< TDD_Indic0 : bit >
< NR_OF_TDD_CELLS : bit (5) >
< TDD_CELL_INFORMATION Field : bit(q(NR_OF_TDD_CELLS)) > ; — q(x) defined in table 11.2.9b.2.b/3GPP TS 04.60.

< GPRS REP PRIORITY Description struct > ::=

< Number_Cells : bit(7) >

{ < REP_PRIORITY : bit > } * (val(Number_Cells)) ;

< GPRS MEASUREMENT PARAMETERS Description struct > ::=

 0 | 1 < MULTIBAND_REPORTING : bit (2) > }
 0 | 1 < SERVING_BAND_REPORTING : bit (2) > }
< SCALE_ORD : bit(2) >

 0 | 1 < 900_REPORTING_OFFSET : bit (3) >
< 900_REPORTING_THRESHOLD : bit (3) > }

 0 | 1 < 1800_REPORTING_OFFSET : bit (3) >
< 1800_REPORTING_THRESHOLD : bit (3) > }

 0 | 1 < 400_REPORTING_OFFSET : bit (3) >
< 400_REPORTING_THRESHOLD : bit (3) > }

 0 | 1 < 1900_REPORTING_OFFSET : bit (3) >
< 1900_REPORTING_THRESHOLD : bit (3) > }

 0 | 1 < 850_REPORTING_OFFSET : bit (3) >
< 850_REPORTING_THRESHOLD : bit (3) > } ;

< GPRS 3G MEASUREMENT PARAMETERS Description struct > ::=

< Qsearch_P : bit (4) >
< 3G_SEARCH_PRIO : bit >
 0 | 1 < FDD_REP_QUANT : bit > — FDD Parameters

< FDD_MULTIRAT_REPORTING : bit (2) > }

 0 | 1 < FDD_REPORTING_OFFSET : bit (3) >
< FDD_REPORTING_THRESHOLD : bit (3) > }

 0 | 1 < TDD_MULTIRAT_REPORTING : bit (2) > } — TDD Parameters
 0 | 1 < TDD_REPORTING_OFFSET : bit (3) >
< TDD_REPORTING_THRESHOLD : bit (3) > } ;

Table 11.2.4.2: PACKET CELL CHANGE ORDER information element details

PAGE_MODE (2 bit field)
This field is defined in sub-clause 12.20.

Global TFI
This information element contains the TFI of the mobile station’s downlink TBF or uplink TBF. This field is defined in sub-clause 12.10.

TLLI (32 bit field)
This field is defined in sub-clause 12.16.

IMMEDIATE_REL (bit)
This field indicates whether the MS shall immediately abort any operation in the old cell and move to the target cell (see sub-clause 8.4), or it shall not immediately abort operation in the old cell and follow the cell reselection procedure defined in sub-clause 5.5.1.1. This field is coded according to the following table:

0 No immediate abort of operation in the old cell is required.
1 Immediate abort of operation in the old cell is required.

ARFCN (10 bit field)
This field contains the BCCH frequency of the new cell. This field is encoded as the ARFCN defined in 3GPP TS 04.08.
Range 0 to 1023

BSIC (6 bit field)
This field contains the BSIC of the new cell. This field is encoded as the BSIC value defined in 3GPP TS 04.08.
Range 0 to 63

The NC_Measurement_Parameters struct contains the NETWORK_CONTROL_ORDER and the optional parameters NC_NON_DRX_PERIOD, NC_REPORTING_PERIOD_I, NC_REPORTING_PERIOD_T and the NC_FREQUENCY LIST. These parameters shall apply in the target cell (see sub-clause 5.6.1)

NETWORK_CONTROL_ORDER (2 bit field)
The NETWORK_CONTROL_ORDER field is coded according to the following table (for definition of NCx see 3GPP TS 05.08):

bit
2 1
0 0 NC0
0 1 NC1
1 0 NC2
1 1 RESET

NC_NON_DRX_PERIOD (3 bit field)
NC_REPORTING_PERIOD_I (3 bit field)
NC_REPORTING_PERIOD_T (3 bit field)
For detailed element definitions see the PSI5 message.

NC_FREQUENCY_LIST
For detailed element definitions see the Packet Measurement Order message.

LSA Parameters
This information element is defined in sub-clause 12.28. The ‘LSA parameters IE’ is optional. For detailed element definition, see the PSI3 message.

ENH Measurement Parameters:

For detailed element definitions see the Packet Measurement Order message
(except that CDMA2000 Description struct does not exist in this message).

3G Target Cell struct

Bandwidth_FDD (3bit field)
This information element will be used for future releases of the protocol. When missing, this indicates the present FDD bandwidth. When present, this shall not be considered as an error; indices of the 3G Neighbour Cell list shall be incremented accordingly.

FDD_ARFCN (14 bit field)
This information element is defined as the UARFCN in 3GPP TS 25.101. Any non-supported frequency shall not be considered as an error; indices of the 3G Neighbour Cell list shall be incremented accordingly.

Scrambling Code (9 bit field)
This parameter indicates the Primary Scrambling Code as defined in 3GPP TS 25.213.

Diversity (1 bit field)
This parameter indicates if diversity is applied for the cell:
Bit
0 Diversity is not applied for this cell
1 Diversity is applied for this cell.

Bandwidth_TDD (3 bit field)
This optional information element refers to 3GPP TS 25.331.
Bit
321
000 3.84Mcps
001 1.28Mcps
All other values shall not be interpreted as an error; indices of the 3G Neighbour Cell list shall be incremented accordingly (but no reporting can be performed). When missing, this indicates 3.84 Mcps.

TDD_ARFCN (14 bit field)
This optional information element is defined as the UARFCN in 3GPP TS 25.102. Any non supported frequency shall not be considered as an error; indices of the 3G Neighbour Cell list shall be incremented accordingly.

Cell Parameter (7 bit field)
This parameter is defined in 3GPP TS 25.223.

Sync Case (1 bit field)
This parameter is defined in 3GPP TS 25.223
Bit
0 Sync Case 1
1 Sync Case 2

GPRS MEASUREMENT PARAMETERS Description
The fields of this Description are used for measurements, as defined in 3GPP TS 05.08.
Any parameter present overwrites any old data held by the mobile station for this parameter.

GPRS 3G MEASUREMENT PARAMETERS Description
The fields of this Description are used for measurements, as defined in 3GPP TS 05.08.
Any parameter present overwrites any old data held by the mobile station for this parameter.