11.2.3 Packet Cell Change Failure

3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS

This message is sent on the PACCH from the mobile station to the network to indicate that a commanded cell change order has failed. For a (3G) multi-RAT mobile station this may be a 3G Cell. For a (E-UTRAN) multi-RAT mobile station this may be an E-UTRAN cell.

Message type: PACKET CELL CHANGE FAILURE

Direction: mobile station to network

Table 11.2.3.1: PACKET CELL CHANGE FAILURE message content

< Packet Cell Change Failure message content > ::=

< TLLI / G-RNTI : bit (32) >

< ARFCN : bit (10) >

< BSIC : bit (6) >

< CAUSE : bit (4) >

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

| 1 — Additions in release 99 :

{ 0 | 1 < UTRAN FDD Target cell: < UTRAN FDD Target cell IE > > }
{ 0 | 1 < UTRAN TDD Target cell: < UTRAN TDD Target cell IE > > }

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

| 1 — Additions in Rel-5 :
{ 0 | 1 < G-RNTI extension : bit (4) > }

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

| 1 — Additions in Rel-8 :

{ 0 | 1 < E-UTRAN Target cell: < E-UTRAN Target cell IE > > }

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

| 1 — Additions in Rel-9 :

{ 0 | 1 < UTRAN CSG Target cell:

< UTRAN CSG Target cell IE > > }

{ 0 | 1 < E-UTRAN CSG Target cell :

< E-UTRAN CSG Target cell IE > > }

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

| 1 — Additions in Rel-11 :

{ 0 | 1 < E-UTRAN Target cell with extended EARFCN :

< E-UTRAN Target cell with extended EARFCN IE > > }

< padding bits > } } } } } ;

Table 11.2.3.2: PACKET CELL CHANGE FAILURE information element details

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

ARFCN (10 bit field)
This field contains, in case of a GSM cell, the BCH frequency of the target cell on which the failure occurred. This field is encoded as the ARFCN defined in 3GPP TS 44.018.
Range 0 to 1023
If a 3G Cell or an E-UTRAN Cell is indicated, this field shall be sent with the value 0

BSIC (6 bit field)
This field contains, in case of a GSM cell, the BSIC of the BCH frequency of the target cell on which the failure occurred. This field is encoded as the BSIC value defined in 3GPP TS 44.018.
Range 0 to 63
If a 3G Cell or an E-UTRAN Cell is indicated, this field shall be sent with the value 0.

CAUSE (4 bit field)
This field indicates the cause of the cell change order failure on the target cell.

bit
4 3 2 1
0 0 0 0 Frequency not implemented
0 0 0 1 No response on target cell
0 0 1 0 Immediate Assign Reject or Packet Access Reject on target cell
0 0 1 1 On going CS connection
0 1 0 0 PS Handover failure-other

0 1 0 1 MS in GMM Standby state
0 1 1 0 Forced to the Standby state
All others Reserved for future use

UTRAN FDD Target cell

This information element contains the description of the UTRAN FDD Target cell. This information element is defined in sub-clause 12.31.

UTRAN TDD Target cell

This information element contains the description of the UTRAN TDD Target cell. This field is defined in sub-clause 12.32.

E-UTRAN Target cell

This information element contains the description of the E-UTRAN Target cell. This field is defined in sub-clause 12.49. If the conditions for sending the E-UTRAN Target cell with extended EARFCN information element are met (see definition of E-UTRAN Target cell with extended EARFCN IE below) then this information element shall not be included.

G-RNTI extension (4 bit field)

This field contains the extra 4 bits of the G-RNTI not included in the TLLI / G-RNTI field which are necessary to provide a unique identifier in Iu mode.

UTRAN CSG Target cell
This information element contains the routing parameters for the UTRAN CSG or hybrid cell. It is defined in sub-clause 12.63.

E-UTRAN CSG Target cell
This information element contains the routing parameters for the E-UTRAN CSG or hybrid cell. It is defined in sub-clause 12.62.

E-UTRAN Target cell with extended EARFCN
This information element contains the description of the E-UTRAN Target cell. It is defined in sub-clause 12.68. This information element shall only be included if both the mobile station and the network supports extended EARFCNs (see 3GPP TS 24.008); in such a case the E-UTRAN Target cell IE shall not be included in the message.