42.4.7 Inter-RAT (GPRS to UTRAN) Cell Change Order

3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS

42.4.7.1 Inter-RAT Cell Change Order (Known Cell) – Uplink Data Transfer

42.4.7.1.1 Conformance requirement

For a multi-RAT mobile station, the PACKET CELL CHANGE ORDER message may contain information on a 3G target cell, together with the IMMEDIATE_REL parameter; in the case of UTRAN establishment of UTRAN channel(s) and subsequent measurement reporting are defined in 3GPP TS 25.331.

Upon receipt of the PACKET CELL CHANGE ORDER message the mobile station shall start timer T3174 and apply the cell reselection procedure defined in subclause 5.5.1.1. with the additional rule that an immediate abort of operation in the old cell may be required by the network through the IMMEDIATE_REL field, except for the acknowledgement, by means of a PACKET CONTROL ACKNOWLEDGEMENT message, of a valid RRBP field possibly included in the PACKET CELL CHANGE ORDER message. The mobile station shall obey the PACKET CELL CHANGE ORDER message irrespective of whether or not the mobile station has any knowledge of the relative synchronisation of the target cell to the serving cell. A UTRAN capable mobile station shall obey the command irrespective of whether the cell is know or not known (see 3GPP TS 25.133 and 3GPP TS 25.123).

For a multi-RAT mobile station, the PACKET CELL CHANGE ORDER message may contain information on a 3G target cell, together with the IMMEDIATE_REL parameter; in the case of UTRAN establishment of UTRAN channel(s) and subsequent measurement reporting are defined in 3GPP TS 25.331.

  • The UE shall:

1> set the variable ESTABLISHMENT_CAUSE to "Inter-RAT cell change order";

NOTE: This value of ESTABLISHMENT_CAUSE has priority over the cause requested by upper layers.

1> initiate an RRC connection establishment procedure as specified in subclause 8.1.3.

For a UTRAN target cell, the mobile station regards the procedure as completed when it has received a successful response to its RRC Connection Request message, see 3GPP TS 25.331. It shall then stop timer T3174.

42.4.7.1.2 Test Purpose

To verify the when NC2 is commanded, the MS sends PACKET ENHANCED MEASUREMENT REPORT messages, in which both the serving and non-serving cells are reported.

To verify that when the cell change order procedure is started by sending a PACKET CELL CHANGE ORDER message with the IMMEDIATE_REL value set to 1, the MS shall abort any TBF in progress and stop transmitting.

To verify that the MS switches to the commanded UTRAN cell.

Reference

3GPP TS 04.60, subclause 8.4.

3GPP TS 25.331 subclause 8.3.10

42.4.7.1.3 Method of test

Initial conditions

System simulator:

2 cells – Cell A is GPRS, Cell B is UTRAN (activated at power ON)

3GPP TS 34.108, subclause 6.1 shall be referenced for default parameters of Cell 2.

3GPP TS 34.123-3, subclause 8.3.2 shall be referenced for configuring channels on Cell 2.

Mobile Station:

MS is in Packet Idle mode and GPRS attached.

PDP context 2 established.

Specific PICS Statements

PIXIT Statements

Foreseen final state of the MS

– MS is in CELL_DCH state.

Test procedure

MS is brought into uplink packet transfer mode. SS commands MS to NC2 with PACKET MEASUREMENT ORDER. SS waits for a PACKET ENHANCED MEASUREMENT REPORT to contain measurement results for both cell A and cell B. SS sends a PACKET CELL CHANGE ORDER message. SS checks that there is no traffic on the old cell. MS switches to the UTRAN cell and re-establishes the data transfer.

Maximum duration of the test

Expected sequence

Step

Direction

Message

Comments

1

MS is brought into uplink packet transfer mode. TBF is active from steps 1-6. In order to keep TBF active, sufficient data is to be injected to MS.

2

MS -> SS

MS sends Uplink data

3

SS ->MS

PACKET MEASUREMENT ORDER

– Sent on PACCH.

-Contains NETWORK_CONTROL_ORDER and NC_REPORTING_PERIOD_T

See specific message contents

4a

MS -> SS

MS sends Uplink data.

4b

MS->SS

PACKET ENHANCED MEASUREMENT REPORT

– Sent on PACCH.

– Contains the "NC measurement report struct" on PACCH

5

Repeat steps 4a/4b until the information on UTRAN cell is included in the PEMR.

6

SS -> MS

PACKET CELL CHANGE ORDER

Sent on the PACCH.

IMMEDIATE_REL bit is set to "1"

Contains -Details of cell B (UTRAN cell).

See specific message contents

7

MS->SS

RRC CONNECTION REQUEST

Received on Cell B (UTRAN cell) CCCH.

Establishment Cause = Inter-RAT cell change order

8

SS->MS

RRC CONNECTION SETUP

Sent on CCCH

9

MS->SS

RRC CONNECTION SETUP COMPLETE

Sent on DCCH (Mobile is in CELL_DCH state)

Specific message contents

PACKET MEASUREMENT ORDER in step 5:

NC Measurement parameters

NETWORK_CONTROL_ORDER

10 (NC2)

NC_REPORTING_PERIOD_T

010 (1.92 s)

Enhanced Measurement Parameter Struct

Report_Type

0 Enhanced measurement report

3G Neighbour Cell Description

1

UTRAN FDD Description

1

0 | 1 < Bandwidth_FDD

0 (use present FDD band width)

Repeated UTRAN FDD Neighbour Cells

FDD-ARFCN

ref 34.108

FDD_Indic0

0

NR_OF_FDD_CELLS

1

PACKET CELL CHANGE ORDER in Step 9

Information element

Value/remark

< PAGE_MODE : bit (2) >

00 (Normal Paging)

0 | 10

0

< GLOBAL_TFI : Global TFI IE >

<5 bit Uplink TFI>

0 | 1

1

Message escape

00

< IMMEDIATE_REL >

1 (Immediate abort of operation in the old cell is required)

3G-target cell struct

0 | 1

1

< FDD-ARFCN : bit (14) >

ref 34.108

< Diversity : bit >

0 (Diversity not applied in the cell)

0 | 1 < Bandwidth_FDD : bit (3) >

0 (use present FDD band width)

< SCRAMBLING_CODE : bit (9) >

Ref 34.108

< padding bits >

42.4.7.2 Inter-RAT Cell Change Order (Unknown Cell) – Uplink Data Transfer

42.4.7.2.1 Conformance requirement

For a multi-RAT mobile station, the PACKET CELL CHANGE ORDER message may contain information on a 3G target cell, together with the IMMEDIATE_REL parameter; in the case of UTRAN establishment of UTRAN channel(s) and subsequent measurement reporting are defined in 3GPP TS 25.331.

Upon receipt of the PACKET CELL CHANGE ORDER message the mobile station shall start timer T3174 and apply the cell reselection procedure defined in subclause 5.5.1.1. with the additional rule that an immediate abort of operation in the old cell may be required by the network through the IMMEDIATE_REL field, except for the acknowledgement, by means of a PACKET CONTROL ACKNOWLEDGEMENT message, of a valid RRBP field possibly included in the PACKET CELL CHANGE ORDER message. The mobile station shall obey the PACKET CELL CHANGE ORDER message irrespective of whether or not the mobile station has any knowledge of the relative synchronisation of the target cell to the serving cell. A UTRAN capable mobile station shall obey the command irrespective of whether the cell is know or not known (see 3GPP TS 25.133 and 3GPP TS 25.123).

For a multi-RAT mobile station, the PACKET CELL CHANGE ORDER message may contain information on a 3G target cell, together with the IMMEDIATE_REL parameter; in the case of UTRAN establishment of UTRAN channel(s) and subsequent measurement reporting are defined in 3GPP TS 25.331.

  • The UE shall:

1> set the variable ESTABLISHMENT_CAUSE to "Inter-RAT cell change order";

NOTE: This value of ESTABLISHMENT_CAUSE has priority over the cause requested by upper layers.

1> initiate an RRC connection establishment procedure as specified in subclause 8.1.3.

For a UTRAN target cell, the mobile station regards the procedure as completed when it has received a successful response to its RRC Connection Request message, see 3GPP TS 25.331. It shall then stop timer T3174.

42.4.7.2.2 Test Purpose

To verify that when the cell change order procedure is started by sending a PACKET CELL CHANGE ORDER message with the IMMEDIATE_REL value set to 1, the MS shall abort any TBF in progress and stop transmitting.

To verify that the MS switches to the commanded UTRAN cell.

Reference

3GPP TS 04.60, subclause 8.4.

3GPP TS 25.331 subclause 8.3.10

42.4.7.2.3 Method of test

Initial conditions

System simulator:

2 cells – Cell A is GPRS (NC2), Cell B is UTRAN (activated at power ON)

3GPP TS 34.108, subclause 6.1 shall be referenced for default parameters of Cell 2.

3GPP TS 34.123-3, subclause 8.3.2 shall be referenced for configuring channels on Cell 2.

Mobile Station:

MS is in Packet Idle mode and GPRS attached.

PDP context 2 established.

Specific PICS Statements

PIXIT Statements

Foreseen final state of the MS

– MS is in CELL_DCH state.

Test procedure

MS is brought into uplink packet transfer mode. SS sends a PACKET CELL CHANGE ORDER message. SS checks that there is no traffic on the old cell. MS switches to the UTRAN cell and re-establishes the data transfer.

Maximum duration of the test

Expected sequence

Step

Direction

Message

Comments

1

MS is brought into uplink packet transfer mode. TBF is active from steps 1-3. In order to keep TBF active, sufficient data is to be injected to MS.

2

MS -> SS

MS sends Uplink data

3

SS -> MS

PACKET CELL CHANGE ORDER

Sent on the PACCH.

IMMEDIATE_REL bit is set to "1"

Contains -Details of cell B (UTRAN cell).

See specific message contents

4

MS->SS

RRC CONNECTION REQUEST

Received on Cell B (UTRAN cell) CCCH.

Establishment Cause = Inter-RAT cell change order

5

SS->MS

RRC CONNECTION SETUP

Sent on CCCH

6

MS->SS

RRC CONNECTION SETUP COMPLETE

Sent on DCCH (Mobile is in CELL_DCH state)

Specific message contents

PACKET CELL CHANGE ORDER in Step 5

Information element

Value/remark

< PAGE_MODE : bit (2) >

00 (Normal Paging)

0 | 10

0

< GLOBAL_TFI : Global TFI IE >

<5 bit Uplink TFI>

0 | 1

1

Message escape

00

< IMMEDIATE_REL >

1 (Immediate abort of operation in the old cell is required)

3G-target cell struct

0 | 1

1

< FDD-ARFCN : bit (14) >

ref 34.108

< Diversity : bit >

0 (Diversity not applied in the cell)

0 | 1 < Bandwidth_FDD : bit (3) >

0 (use present FDD band width)

< SCRAMBLING_CODE : bit (9) >

Ref 34.108

< padding bits >

42.4.7.3 Inter-RAT Cell Change Order (Known Cell) – Downlink Data Transfer

42.4.7.3.1 Conformance requirement

For a multi-RAT mobile station, the PACKET CELL CHANGE ORDER message may contain information on a 3G target cell, together with the IMMEDIATE_REL parameter; in the case of UTRAN establishment of UTRAN channel(s) and subsequent measurement reporting are defined in 3GPP TS 25.331.

Upon receipt of the PACKET CELL CHANGE ORDER message the mobile station shall start timer T3174 and apply the cell reselection procedure defined in subclause 5.5.1.1. with the additional rule that an immediate abort of operation in the old cell may be required by the network through the IMMEDIATE_REL field, except for the acknowledgement, by means of a PACKET CONTROL ACKNOWLEDGEMENT message, of a valid RRBP field possibly included in the PACKET CELL CHANGE ORDER message. The mobile station shall obey the PACKET CELL CHANGE ORDER message irrespective of whether or not the mobile station has any knowledge of the relative synchronisation of the target cell to the serving cell. A UTRAN capable mobile station shall obey the command irrespective of whether the cell is know or not known (see 3GPP TS 25.133 and 3GPP TS 25.123).

For a multi-RAT mobile station, the PACKET CELL CHANGE ORDER message may contain information on a 3G target cell, together with the IMMEDIATE_REL parameter; in the case of UTRAN establishment of UTRAN channel(s) and subsequent measurement reporting are defined in 3GPP TS 25.331.

  • The UE shall:

1> set the variable ESTABLISHMENT_CAUSE to "Inter-RAT cell change order";

NOTE: This value of ESTABLISHMENT_CAUSE has priority over the cause requested by upper layers.

1> initiate an RRC connection establishment procedure as specified in subclause 8.1.3.

For a UTRAN target cell, the mobile station regards the procedure as completed when it has received a successful response to its RRC Connection Request message, see 3GPP TS 25.331. It shall then stop timer T3174.

42.4.7.3.2 Test Purpose

To verify that when the cell change order procedure is started when the MS receives PACKET CELL CHANGE ORDER message with the IMMEDIATE_REL value set to 1.

To verify that the MS switches to the commanded UTRAN cell.

Reference

3GPP TS 04.60, subclause 8.4.

3GPP TS 25.331 subclause 8.3.10

42.4.7.3.3 Method of test

Initial conditions

System simulator:

2 cells – Cell A is GPRS, Cell B is UTRAN (activated at power ON)

3GPP TS 34.108, subclause 6.1 shall be referenced for default parameters of Cell 2.

3GPP TS 34.123-3, subclause 8.3.2 shall be referenced for configuring channels on Cell 2.

Mobile Station:

MS is in Packet Idle mode and GPRS attached.

PDP context established.

Specific PICS Statements

PIXIT Statements

Foreseen final state of the MS

– MS is in CELL_DCH state.

Test procedure

MS is brought into downlink packet transfer mode. SS commands MS to NC2 with PACKET MEASUREMENT ORDER. SS waits for a PACKET ENHANCED MEASUREMENT REPORT to contain measurement results for both cell A and cell B. SS sends a PACKET CELL CHANGE ORDER message. MS switches to the UTRAN cell and completes the cell change order procedure.

Maximum duration of the test

Expected sequence

Step

Direction

Message

Comments

1

SS->MS

PACKET DOWNLINK ASSIGNMENT

Sent on the PCCCH.

2

SS ->MS

PACKET MEASUREMENT ORDER

– Sent on PACCH.

-Contains NETWORK_CONTROL_ORDER and NC_REPORTING_PERIOD_T

See specific message contents

3

SS->MS

SS sends downlink data,

4

MS->SS

PACKET ENHANCED MEASUREMENT REPORT

Sent on PACCH.

5

SS

Repeat steps 3-4 until measurement results for cell B are included in the PACKET ENHANCED MEASUREMENT REPORT message The TBF is maintained during the procedure.

6

SS -> MS

PACKET CELL CHANGE ORDER

Sent on the PACCH.

IMMEDIATE_REL bit is set to "1"

Contains -Details of cell B (UTRAN cell).

See specific message contents

7

MS->SS

RRC CONNECTION REQUEST

Received on Cell B (UTRAN cell) CCCH.

Establishment Cause = Inter-RAT cell change order

8

SS->MS

RRC CONNECTION SETUP

Sent on CCCH

9

MS->SS

RRC CONNECTION SETUP COMPLETE

Sent on DCCH (Mobile is in CELL_DCH state)

Specific message contents

PACKET MEASUREMENT ORDER in step 2:

NC Measurement parameters

NETWORK_CONTROL_ORDER

10 (NC2)

NC_REPORTING_PERIOD_T

010 (1.92 s)

Enhanced Measurement Parameter Struct

Report_Type

0 Enhanced measurement report

3G Neighbour Cell Description

1

UTRAN FDD Description

1

0 | 1 < Bandwidth_FDD

0 (use present FDD band width)

Repeated UTRAN FDD Neighbour Cells

FDD-ARFCN

ref 34.108

FDD_Indic0

0

NR_OF_FDD_CELLS

1

PACKET CELL CHANGE ORDER in Step 6

Information element

Value/remark

< PAGE_MODE : bit (2) >

00 (Normal Paging)

0 | 10

0

< GLOBAL_TFI : Global TFI IE >

<5 bit Uplink TFI>

0 | 1

1

Message escape

00

< IMMEDIATE_REL >

1 (Immediate abort of operation in the old cell is required)

3G-target cell struct

0 | 1

1

< FDD-ARFCN : bit (14) >

ref 34.108

< Diversity : bit >

0 (Diversity not applied in the cell)

0 | 1 < Bandwidth_FDD : bit (3) >

0 (use present FDD band width)

< SCRAMBLING_CODE : bit (9) >

Ref 34.108

< padding bits >

42.4.7.4 Inter-RAT Cell Change Order (Known Cell) – Simultaneous uplink and downlink transfer

42.4.7.4.1 Conformance requirement

For a multi-RAT mobile station, the PACKET CELL CHANGE ORDER message may contain information on a 3G target cell, together with the IMMEDIATE_REL parameter; in the case of UTRAN establishment of UTRAN channel(s) and subsequent measurement reporting are defined in 3GPP TS 25.331.

Upon receipt of the PACKET CELL CHANGE ORDER message the mobile station shall start timer T3174 and apply the cell reselection procedure defined in subclause 5.5.1.1. with the additional rule that an immediate abort of operation in the old cell may be required by the network through the IMMEDIATE_REL field, except for the acknowledgement, by means of a PACKET CONTROL ACKNOWLEDGEMENT message, of a valid RRBP field possibly included in the PACKET CELL CHANGE ORDER message. The mobile station shall obey the PACKET CELL CHANGE ORDER message irrespective of whether or not the mobile station has any knowledge of the relative synchronisation of the target cell to the serving cell. A UTRAN capable mobile station shall obey the command irrespective of whether the cell is know or not known (see 3GPP TS 25.133 and 3GPP TS 25.123).

For a multi-RAT mobile station, the PACKET CELL CHANGE ORDER message may contain information on a 3G target cell, together with the IMMEDIATE_REL parameter; in the case of UTRAN establishment of UTRAN channel(s) and subsequent measurement reporting are defined in 3GPP TS 25.331.

  • The UE shall:

1> set the variable ESTABLISHMENT_CAUSE to "Inter-RAT cell change order";

NOTE: This value of ESTABLISHMENT_CAUSE has priority over the cause requested by upper layers.

1> initiate an RRC connection establishment procedure as specified in subclause 8.1.3.

For a UTRAN target cell, the mobile station regards the procedure as completed when it has received a successful response to its RRC Connection Request message, see 3GPP TS 25.331. It shall then stop timer T3174.

42.4.7.4.2 Test Purpose

To verify that when the cell change order procedure is started by sending a PACKET CELL CHANGE ORDER message with the IMMEDIATE_REL value set to 1, the MS shall abort any TBF in progress and stop transmitting.

To verify that the MS switches to the commanded UTRAN cell.

Reference

3GPP TS 04.60, subclause 8.4.

3GPP TS 25.331 subclause 8.3.10

42.4.7.4.3 Method of test

Initial conditions

System simulator:

2 cells – Cell A is GPRS, Cell B is UTRAN (activated at power ON)

3GPP TS 34.108, subclause 6.1 shall be referenced for default parameters of Cell 2.

3GPP TS 34.123-3, subclause 8.3.2 shall be referenced for configuring channels on Cell 2.

Mobile Station:

MS is in Packet Idle mode and GPRS attached.

PDP context established.

Specific PICS Statements

PIXIT Statements

Foreseen final state of the MS

– MS is in CELL_DCH state.

Test procedure

MS is brought into simultaneous uplink and downlink packet transfer mode. SS commands MS to NC2 with PACKET MEASUREMENT ORDER. SS waits for a PACKET ENHANCED MEASUREMENT REPORT to contain measurement results for both cell A and cell B. SS sends a PACKET CELL CHANGE ORDER message with IMMEDIATE_REL value set to 1 to force the mobile to release all ongoing TBFs. MS switches to the UTRAN cell and completes the cell change order procedure.

Maximum duration of the test

Expected sequence

Step

Direction

Message

Comments

1

MS is brought into uplink packet transfer mode. TBF is active from steps 1-6. In order to keep TBF active, sufficient data is to be injected to MS.

2

SS ->MS

PACKET MEASUREMENT ORDER

– Sent on PACCH.

-Contains NETWORK_CONTROL_ORDER and NC_REPORTING_PERIOD_T

See specific message contents

3

SS -> MS

PACKET DOWNLINK ASSIGNMENT

Sent on the PACCH.

4a

MS -> SS

MS sends Uplink data.

4b

MS->SS

PACKET ENHANCED MEASUREMENT REPORT

5

SS -> MS

SS sends downlink data,

6

SS

Repeat steps 4-5 until measurement results for cell B are included in the PACKET ENHANCED MEASUREMENT REPORT message

7

SS -> MS

PACKET CELL CHANGE ORDER

Sent on the PACCH.

IMMEDIATE_REL bit is set to "1"

Contains -Details of cell B (UTRAN cell).

See specific message contents

8

MS->SS

RRC CONNECTION REQUEST

Received on Cell B (UTRAN cell) CCCH.

Establishment Cause = Inter-RAT cell change order

9

SS->MS

RRC CONNECTION SETUP

Sent on CCCH

10

MS->SS

RRC CONNECTION SETUP COMPLETE

Sent on DCCH (Mobile is in CELL_DCH state)

Specific message contents

PACKET MEASUREMENT ORDER in step 2:

NC Measurement parameters

NETWORK_CONTROL_ORDER

10 (NC2)

NC_REPORTING_PERIOD_T

010 (1.92 s)

Enhanced Measurement Parameter Struct

Report_Type

0 Enhanced measurement report

3G Neighbour Cell Description

1

UTRAN FDD Description

1

0 | 1 < Bandwidth_FDD

0 (use present FDD band width)

Repeated UTRAN FDD Neighbour Cells

FDD-ARFCN

ref 34.108

FDD_Indic0

0

NR_OF_FDD_CELLS

1

PACKET CELL CHANGE ORDER in Step 11

Information element

Value/remark

< PAGE_MODE : bit (2) >

00 (Normal Paging)

0 | 10

0

< GLOBAL_TFI : Global TFI IE >

<5 bit Uplink TFI>

0 | 1

1

Message escape

00

< IMMEDIATE_REL >

1 (Immediate abort of operation in the old cell is required)

3G-target cell struct

0 | 1

1

< FDD-ARFCN : bit (14) >

ref 34.108

< Diversity : bit >

0 (Diversity not applied in the cell)

0 | 1 < Bandwidth_FDD : bit (3) >

0 (use present FDD band width)

< SCRAMBLING_CODE : bit (9) >

Ref 34.108

< padding bits >

42.4.7.5 Inter-RAT (GPRS to UTRAN) Cell Change Order (Known cell) / Failure

42.4.7.5.1 Inter-RAT (GPRS to UTRAN) Cell Change Order (Known cell) / Failure / Uplink transfer / T3174 expiry

42.4.7.5.1.1 Conformance requirement

In the following cases, the mobile station shall determine that the network controlled cell reselection procedure has failed:

– The PACKET CELL CHANGE ORDER message commands the mobile station to a frequency in a frequency band not supported by the mobile station. Cause: “frequency not implemented”.

– The PACKET CELL CHANGE ORDER message is received while a circuit switched connection is on going. Cause: “on-going CS connection”.

– In A/Gb mode, the PACKET CELL CHANGE ORDER message is received and the GMM READY timer (see 3GPP TS 24.008) is not running (i.e., mobile station in GMM STAND-BY state). Cause, if the GMM READY timer has a negotiated value equal to zero: “Forced to the Standby State”. Cause, if the GMM READY timer has a negotiated value greater than zero: “MS in GMM Standby state”.

– Access is denied in the new cell (i.e., the mobile station receives an IMMEDIATE ASSIGNMENT REJECT, a PACKET ASSIGNMENT REJECT or, in a UTRAN cell, an RRC CONNECTION REJECT message). Cause: “Immediate Assign Reject or Packet Access Reject on target cell”.

– The mobile station is unable to synchronise to the new cell (see 3GPP TS 45.008) or the timer T3174 expires before a successful completion of the network controlled cell reselection procedure. Cause: “No response on target cell”.

– Due to any other reason (e.g. unknown or unsupported target cell information). In this case the MS shall set the ARFCN and BSIC fields to the value zero and set the cause to value “frequency not implemented”.

If the mobile station determines that the network controlled cell reselection procedure has failed, the mobile station shall stop timer T3174 (if it is still running) and start timer T3176. The mobile station shall return to the old cell, where it may trigger a cell update or other GMM specific procedure. In case the mobile station synchronised and attempted to access the new cell before returning to the old cell, the mobile station shall trigger a cell update or other GMM specific procedure, as appropriate according to the GMM requirements (see 3GPP TS 24.008).

The mobile station shall send a PACKET CELL CHANGE FAILURE message with the appropriate cause value to the network in the old cell and stop timer T3176. The PACKET CELL CHANGE FAILURE message may be sent on PACCH when the mobile station is in packet transfer mode, dual transfer mode or MAC-Shared state. Alternatively, the mobile station may initiate random access with access type “single block without TBF establishment” (PCCCH) / “single block packet access” (CCCH) and send the PACKET CELL CHANGE FAILURE message using an allocated single uplink block.

Reference

3GPP TS 044.060, subclause 8.4.2

42.4.7.5.1.2 Test Purpose

To verify that an MS in uplink packet transfer mode when commanded by a PACKET CELL CHANGE ORDER, reports a PACKET CELL CHANGE FAILURE on the old GPRS cell due to the expiry of T3174 before receiving response to RRC CONNECTION REQUEST on target UTRAN cell.

42.4.7.5.1.3 Method of test

Initial conditions

System Simulator:

– 2 cells, Cell A, GPRS Supported without PBCCH, NC2.

– Cell B is a UTRAN cell. UTRAN cell is the better cell of the two cells. It is activated after MS is GPRS attached to Cell A. 3GPP TS 34.108, subclause 6.1 shall be referenced for default parameters of Cell B except that T300 and N300 are to be set to the maximum values (8000 milliseconds for T300 and 7 for N300).3GPP TS 34.123-3, subclause 8.3.2 shall be referenced for configuring channels on Cell B.

– 3G Neighbour Cell Description of Cell A refers to the UTRAN Cell B. XXX_MUTIRAT_REPORTING is set to 1. REPORT_TYPE is set to indicate the usage of Packet Enhanced Measurement Report.

Mobile Station:

– MS is in Packet Idle mode and GPRS attached on Cell A.

– PDP context 2 established

Specific PICS Statements

PIXIT Statements

Foreseen final state of the MS

– MS is in Packet transfer mode in the GPRS cell.

Test procedure

MS is brought into uplink packet transfer mode. MS sends PEMR with UTRAN cell information. SS sends the PACKET CELL CHANGE ORDER message giving a UTRAN cell description to the MS. MS sends RRC Connection Request on the UTRAN cell. The SS does not respond to the request and timer T3174 expires. MS returns to the old cell, sends a PACKET CELL CHANGE FAILURE message to the SS and continues data transfer on the old cell.

Maximum duration of the test

Expected sequence

Step

Direction

Message

Comments

1

SS

{Uplink dynamic allocation one phase access}

Initiate uplink transfer of 1500 octets. The TBF is active at steps 2-3 and 7-9.

2a

MS -> SS

Uplink data

MS sends uplink data.

2b

MS -> SS

PACKET ENHANCED MEASUREMENT REPORT

Sent on PACCH. Contains NC Measurement Report struct.

3

Repeat steps 2a and 2b until UTRAN cell information is sent in PEMR.

4

SS -> MS

PACKET CELL CHANGE ORDER

Sent on the PACCH.

Contains Description of the UTRAN cell.

See specific message contents.

5

MS -> SS

RRC CONNECTION REQUEST

To the UTRAN cell.

6

SS

SS does not respond to the request until timer T3174 has expired. During this period MS will retransmit RRC CONNECTION REQUEST after the expiry of T300.

7

MS -> SS

CHANNEL REQUEST

After the expiry of T3174, to the old cell within 15 sec.

8

SS -> MS

IMMEDIATE ASSIGNMENT

Sent on AGCH, Dynamic allocation

9

MS -> SS

PACKET CELL CHANGE FAILURE

Sent when USF is allocated to the MS.

Error cause:" No response on target cell " See specific message contents

11

(MS may perform ROUTING AREA UPDATE procedure)

Note: MS will send Packet Enhanced Measurement Report at the expiry of T3158 during the entire test case.

Specific message contents

PACKET CELL CHANGE ORDER in Step 3

Information element

Value/remark

< PAGE_MODE : bit (2) >

00 (Normal Paging)

0 | 10

0

< GLOBAL_TFI : Global TFI IE >

< Uplink TFI>

0 | 1

1

Message escape

00

< IMMEDIATE_REL >

1 (Immediate abort of operation in the old cell is required)

3G-target cell struct

0 | 1

1

< FDD-ARFCN : bit (14) >

ref 34.108

< Diversity : bit >

0 (Diversity not applied in the cell)

0 | 1 < Bandwidth_FDD : bit (3) >

0 (use present FDD band width)

< SCRAMBLING_CODE : bit (9) >

Ref 34.108

< padding bits >

PACKET CELL CHANGE FAILURE in step 9:

Packet Cell Change Failure message content:

CAUSE

0001(No response on target cell)

42.4.7.5.2 Inter-RAT (GPRS to UTRAN) Cell Change Order (Known cell) / Failure / Downlink transfer / REJECT from target UTRAN cell with Inter-RAT info set to GSM.

42.4.7.5.2.1 Conformance requirement

In the following cases, the mobile station shall determine that the network controlled cell reselection procedure has failed:

– The PACKET CELL CHANGE ORDER message commands the mobile station to a frequency in a frequency band not supported by the mobile station. Cause: “frequency not implemented”.

– The PACKET CELL CHANGE ORDER message is received while a circuit switched connection is on going. Cause: “on-going CS connection”.

– In A/Gb mode, the PACKET CELL CHANGE ORDER message is received and the GMM READY timer (see 3GPP TS 24.008) is not running (i.e., mobile station in GMM STAND-BY state). Cause, if the GMM READY timer has a negotiated value equal to zero: “Forced to the Standby State”. Cause, if the GMM READY timer has a negotiated value greater than zero: “MS in GMM Standby state”.

– Access is denied in the new cell (i.e., the mobile station receives an IMMEDIATE ASSIGNMENT REJECT, a PACKET ASSIGNMENT REJECT or, in a UTRAN cell, an RRC CONNECTION REJECT message). Cause: “Immediate Assign Reject or Packet Access Reject on target cell”.

– The mobile station is unable to synchronise to the new cell (see 3GPP TS 45.008) or the timer T3174 expires before a successful completion of the network controlled cell reselection procedure. Cause: “No response on target cell”.

– Due to any other reason (e.g. unknown or unsupported target cell information). In this case the MS shall set the ARFCN and BSIC fields to the value zero and set the cause to value “frequency not implemented”.

If the mobile station determines that the network controlled cell reselection procedure has failed, the mobile station shall stop timer T3174 (if it is still running) and start timer T3176. The mobile station shall return to the old cell, where it may trigger a cell update or other GMM specific procedure. In case the mobile station synchronised and attempted to access the new cell before returning to the old cell, the mobile station shall trigger a cell update or other GMM specific procedure, as appropriate according to the GMM requirements (see 3GPP TS 24.008).

The mobile station shall send a PACKET CELL CHANGE FAILURE message with the appropriate cause value to the network in the old cell and stop timer T3176. The PACKET CELL CHANGE FAILURE message may be sent on PACCH when the mobile station is in packet transfer mode, dual transfer mode or MAC-Shared state. Alternatively, the mobile station may initiate random access with access type “single block without TBF establishment” (PCCCH) / “single block packet access” (CCCH) and send the PACKET CELL CHANGE FAILURE message using an allocated single uplink block.

Reference

3GPP TS 04.60, Chapter 8.4.2

42.4.7.5.2.2 Test Purpose

To verify that an MS in downlink packet transfer mode when commanded by a PACKET CELL CHANGE ORDER, reports PACKET CELL CHANGE FAILURE on the old GPRS cell if an RRC CONNECTION REJECT with Inter-RAT info set to GSM is received on the target UTRAN cell.

42.4.7.5.2.3 Method of test

Initial conditions

System Simulator:

– 2 cells, Cell A, GPRS Supported without PBCCH, NC2. Cell B is a UTRAN cell. Cell Selection conditions favour Cell A. 3G Neighbour Cell Description of Cell A refers to UTRAN Cell B. XXX_MUTIRAT_REPORTING is set to 1. REPORT_TYPE is set to indicate the usage of Packet Enhanced Measurement Report.

– 3GPP TS 34.108, subclause 6.1 shall be referenced for default parameters of Cell B.

– 3GPP TS 34.123-3, subclause 8.3.2 shall be referenced for configuring channels on Cell B.

Mobile Station:

– MS is in Packet Idle mode and GPRS attached on cell A.

– PDP context 2 established

Specific PICS Statements

PIXIT Statements

Foreseen final state of the MS

– MS idle in GPRS cell

Test procedure

MS is brought into downlink packet transfer mode. MS sends PEMR with UTRAN cell information. SS sends the PACKET CELL CHANGE ORDER message to the MS. MS tries to establish RRC connection with UTRAN cell. SS sends the RRC Connection Reject including Inter-RAT info set to “GSM”. MS returns to the old cell and sends PACKET CELL CHANGE FAILURE message to the network. It is verified that the MS can continue downlink transfer on the old cell once a downlink TBF is established.

Maximum duration of the test

Expected sequence

Step

Direction

Message

Comments

1a

SS -> MS

IMMEDIATE ASSIGNMENT

Sent on PCH.

1b

SS -> MS

PACKET DOWNLINK ASSIGNMENT

2a

SS -> MS

Downlink data

SS sends downlink data.

2b

MS -> SS

PACKET ENHANCED MEASUREMENT REPORT

Sent on PACCH when USF is assigned to the MS. Contains NC Measurement Report struct.

3

Repeat steps 2a and 2b until UTRAN cell information is sent in PEMR.

4

SS -> MS

PACKET CELL CHANGE ORDER

Sent on the PACCH.

Contains description of UTRAN cell.

See specific message contents.

5

MS -> SS

RRC CONNECTION REQUEST

On the target UTRAN cell.

6

SS -> MS

RRC CONNECTION REJECT

Received from the Target UTRAN cell, including a Inter-RAT info set to GSM

7

MS -> SS

CHANNEL REQUEST

To the old cell within 15 sec from message sent in step 6.

8

SS -> MS

IMMEDIATE ASSIGNMENT

Sent on AGCH

9

MS -> SS

PACKET CELL CHANGE FAILURE

Error cause:" Packet Access Reject on target cell " See specific message content

10

(MS may perform ROUTING AREA UPDATE procedure)

11a

SS -> MS

IMMEDIATE ASSIGNMENT

Sent on PCH.

11b

SS -> MS

PACKET DOWNLINK ASSIGNMENT

12

SS -> MS

Downlink data

SS sends downlink data.

NOTE: MS will send Packet Enhanced Measurement Report at the expiry of T3158 during the entire test case.

Specific message contents

PACKET CELL CHANGE ORDER in Step 3

Information element

Value/remark

< PAGE_MODE : bit (2) >

00 (Normal Paging)

0 | 10

0

< GLOBAL_TFI : Global TFI IE >

< Uplink TFI>

0 | 1

1

Message escape

00

< IMMEDIATE_REL >

1 (Immediate abort of operation in the old cell is required)

3G-target cell struct

0 | 1

1

< FDD-ARFCN : bit (14) >

ref 34.108

< Diversity : bit >

0 (Diversity not applied in the cell)

0 | 1 < Bandwidth_FDD : bit (3) >

0 (use present FDD band width)

< SCRAMBLING_CODE : bit (9) >

Ref 34.108

< padding bits >

RRC CONNECTION REJECT in step 5:

Redirectioninfo

InterRATInfo

GSM

PACKET CELL CHANGE FAILURE in step 8:

Packet Cell Change Failure message content:

CAUSE

0010 (Packet Access Reject on target cell)