52.6 EGPRS Packet Access for signalling

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

52.6.1 EGPRS Packet Access for signalling / EGPRS Packet Channel Request not supported / CCCH case

52.6.1.1 Conformance requirements

EGPRS TBF mode capable MSs shall monitor the GPRS Cell Options IE on the BCCH (SI13) for the cell’s EGPRS capability. In the GPRS Cell Options IE it is also indicated if the EGPRS PACKET CHANNEL REQUEST is supported in the cell. The following table specifies which message and which establishment cause shall be used by an EGPRS mobile station when accessing an EGPRS capable cell depending on the purpose of the packet access procedure; this table covers the case where PBCCH is not present in the cell (see 3GPP TS 44.060 for the case where PBCCH is not present in the cell):

EGPRS TBF mode capable MSs shall monitor the GPRS Cell Options IE on the BCCH (SI13) for the cell’s EGPRS capability. In the GPRS Cell Options IE it is also indicated if the EGPRS PACKET CHANNEL REQUEST is supported in the cell. The following table specifies which message and which establishment cause shall be used by an EGPRS mobile station when accessing an EGPRS capable cell depending on the purpose of the packet access procedure; this table covers the case where PBCCH is not present in the cell (see 3GPP TS 44.060 for the case where PBCCH is present in the cell):

Purpose of the packet access procedure

EGPRS PACKET CHANNEL REQUEST supported in the cell

EGPRS PACKET CHANNEL REQUEST not supported in the cell

User data transfer – requested RLC mode = unacknowledged

EGPRS PACKET CHANNEL REQUEST with access type = ‘Two-phase access’

CHANNEL REQUEST with establishment cause = ‘Single block packet access’ for initiation of a two-phase access

User data transfer – requested RLC mode = acknowledged

EGPRS PACKET CHANNEL REQUEST with access type = ‘One-phase access’ or ‘Two-phase access’

CHANNEL REQUEST with establishment cause = ‘Single block packet access’ for initiation of a two-phase access

Upper layer signalling transfer (e.g. page response, cell update, MM signalling, etc)

EGPRS PACKET CHANNEL REQUEST with access type = ‘signalling’

CHANNEL REQUEST with establishment cause = ‘Single block packet access’ for initiation of a two-phase access

Sending of a measurement report or of a PACKET CELL CHANGE FAILURE

CHANNEL REQUEST with establishment cause = ‘Single block packet access’

Sending of a PACKET PAUSE message

CHANNEL REQUEST with establishment cause = ‘Single block packet access’ (NOTE 1)

Sending of an MBMS Service Request message

CHANNEL REQUEST with establishment cause = ‘Single block MBMS access’

NOTE 1: Upon sending the first CHANNEL REQUEST message the mobile station shall start timer T3204. If timer T3204 expires before an IMMEDIATE ASSIGNMENT message granting a single block period on an assigned packet uplink resource is received, the packet access procedure is aborted. If the mobile station receives an IMMEDIATE ASSIGNMENT message during the packet access procedure indicating a packet downlink assignment procedure, the mobile station shall ignore the message.

The CHANNEL REQUEST or EGPRS PACKET CHANNEL REQUEST messages are sent on RACH and contain the parameters:

– an establishment cause which indicates packet access, and as applicable, a request for one phase packet access or single block packet access for a CHANNEL REQUEST (clause 9.1.8), or a request for one phase access or two phase access or short access or sending of signalling data for an EGPRS PACKET CHANNEL REQUEST (see 3GPP TS 44.060);

– a random reference which is drawn randomly from an uniform probability distribution for every new transmission.

Reference

3GPP TS 04.18/44.018 subclause 3.5.2.1.2.

52.6.1.2 Test purpose

To verify that the MS uses the correct establishment cause in the CHANNEL REQUEST for upper layer signalling transfer when EGPRS PACKET CHANNEL REQUEST is not supported in GPRS cell options and PBCCH is not present.

52.6.1.3 Method of test

Initial conditions

System Simulator:

2 cells in different Routing Areas, but in same Location areas. EGPRS supported. EGPRS PACKET CHANNEL REQUEST not supported in GPRS cell options. PBCCH not present.

Mobile Station:

The MS is switched off. The SIM is updated to the test cell.

Specific PICS Statements

PIXIT Statements

Test procedure

The MS is switched on or powered up and triggered to perform a GPRS attach. The establishment cause in the CHANNEL REQUEST is checked. The SS pages the MS. The MS answers and the establishment cause in the CHANNEL REQUEST is checked. The SS then activates Cell B and lowers the RF level of Cell A until Cell A is no more suitable. Cell B is preferred by the MS. The MS initiates a Routing Area Update. The establishment cause in the CHANNEL REQUEST is checked.

Maximum duration of the test

4 minutes.

Expected sequence

Step

Direction

Message

Comments

1

SS

The SS is set in network operation mode II and activates cell A. The following messages are sent and shall be received on cell A.

2

MS

The MS is powered up or switched on and initiates an attach.

3

MS -> SS

CHANNEL REQUEST

Establishment cause = “Single block packet access”.

Received on RACH.

4

MS<->SS

{Completion of the attach procedure}

Macro

5

SS

SS verifies that the correct establishment cause has been used in step 3.

6

SS -> MS

PAGING REQUEST TYPE 1

Sent on PCH. Mobility Identity contains P-TMSI of the MS, Packet Page Indication indicates a packet paging procedure.

7

MS -> SS

CHANNEL REQUEST

Establishment cause = “Single block packet access”.

Received on RACH.

8

SS -> MS

IMMEDIATE ASSIGNMENT REJECT

Request Reference = pertaining to the message received in step 7, Sent on AGCH.

9

SS

SS verifies that the correct establishment cause has been used in step 7.

10

SS

Waits 50 seconds in order for the READY timer to expire.

11

The following messages are sent and shall be received on cell B.

12

SS

Activate cell B with lower signal strength than cell A. The RF level of cell A is lowered until cell A is no more suitable.

13

MS

Cell B is preferred by the MS.

14

MS -> SS

CHANNEL REQUEST

Establishment cause = “Single block packet access”.

Received on RACH.

15

SS -> MS

IMMEDIATE ASSIGNMENT

Request Reference = pertaining to the message received in step 14. Sent on AGCH.

16

MS -> SS

PACKET RESOURCE REQUEST

MS Radio Access Capability indicates that the MS supports EGPRS.

17

SS -> MS

PACKET UPLINK ASSIGNMENT

Assigns an EGPRS TBF

18

MS -> SS

ROUTING AREA UPDATING REQUEST

Update type = ‘RA updating’

19

SS -> MS

ROUTING AREA UPDATING ACCEPT

Update result = ‘RA updated’

20

MS -> SS

ROUTING AREA UPDATING COMPLETE

21

SS

SS verifies that the correct establishment cause has been used in step 14.

Specific message contents

None.

52.6.2 EGPRS Packet Access for signalling / EGPRS Packet Channel Request supported / CCCH case

52.6.2.1 Conformance requirements

EGPRS TBF mode capable MSs shall monitor the GPRS Cell Options IE on the BCCH (SI13) for the cell’s EGPRS capability. In the GPRS Cell Options IE it is also indicated if the EGPRS PACKET CHANNEL REQUEST is supported in the cell. The following table specifies which message and which establishment cause shall be used by an EGPRS mobile station when accessing an EGPRS capable cell depending on the purpose of the packet access procedure; this table covers the case where PBCCH is not present in the cell (see 3GPP TS 44.060 for the case where PBCCH is not present in the cell):

EGPRS TBF mode capable MSs shall monitor the GPRS Cell Options IE on the BCCH (SI13) for the cell’s EGPRS capability. In the GPRS Cell Options IE it is also indicated if the EGPRS PACKET CHANNEL REQUEST is supported in the cell. The following table specifies which message and which establishment cause shall be used by an EGPRS mobile station when accessing an EGPRS capable cell depending on the purpose of the packet access procedure; this table covers the case where PBCCH is not present in the cell (see 3GPP TS 44.060 for the case where PBCCH is present in the cell):

Purpose of the packet access procedure

EGPRS PACKET CHANNEL REQUEST supported in the cell

EGPRS PACKET CHANNEL REQUEST not supported in the cell

User data transfer – requested RLC mode = unacknowledged

EGPRS PACKET CHANNEL REQUEST with access type = ‘Two-phase access’

CHANNEL REQUEST with establishment cause = ‘Single block packet access’ for initiation of a two-phase access

User data transfer – requested RLC mode = acknowledged

EGPRS PACKET CHANNEL REQUEST with access type = ‘One-phase access’ or ‘Two-phase access’

CHANNEL REQUEST with establishment cause = ‘Single block packet access’ for initiation of a two-phase access

Upper layer signalling transfer (e.g. page response, cell update, MM signalling, etc)

EGPRS PACKET CHANNEL REQUEST with access type = ‘signalling’

CHANNEL REQUEST with establishment cause = ‘Single block packet access’ for initiation of a two-phase access

Sending of a measurement report or of a PACKET CELL CHANGE FAILURE

CHANNEL REQUEST with establishment cause = ‘Single block packet access’

Sending of a PACKET PAUSE message

CHANNEL REQUEST with establishment cause = ‘Single block packet access’ (NOTE 1)

Sending of an MBMS Service Request message

CHANNEL REQUEST with establishment cause = ‘Single block MBMS access’

NOTE 1: Upon sending the first CHANNEL REQUEST message the mobile station shall start timer T3204. If timer T3204 expires before an IMMEDIATE ASSIGNMENT message granting a single block period on an assigned packet uplink resource is received, the packet access procedure is aborted. If the mobile station receives an IMMEDIATE ASSIGNMENT message during the packet access procedure indicating a packet downlink assignment procedure, the mobile station shall ignore the message.

The CHANNEL REQUEST or EGPRS PACKET CHANNEL REQUEST messages are sent on RACH and contain the parameters:

– an establishment cause which indicates packet access, and as applicable, a request for one phase packet access or single block packet access for a CHANNEL REQUEST (clause 9.1.8), or a request for one phase access or two phase access or short access or sending of signalling data for an EGPRS PACKET CHANNEL REQUEST (see 3GPP TS 44.060);

– a random reference which is drawn randomly from an uniform probability distribution for every new transmission.

Reference

3GPP TS 04.18/44.018 subclause 3.5.2.1.2.

52.6.2.2 Test purpose

To verify that the MS uses the correct Access Type in the EGPRS PACKET CHANNEL REQUEST for upper layer signalling transfer when EGPRS PACKET CHANNEL REQUEST is supported in GPRS cell options and PBCCH is not present.

52.6.2.3 Method of test

Initial conditions

System Simulator:

2 cells in different Routing Areas, but in same Location areas. EGPRS supported. EGPRS PACKET CHANNEL REQUEST supported in GPRS cell options. PBCCH not present.

Mobile Station:

The MS is switched off. The SIM is updated to the test cell.

Specific PICS Statements

PIXIT Statements

Test procedure

The MS is switched on or powered up and triggered to perform a GPRS attach. The access type in the EGPRS PACKET CHANNEL REQUEST is checked. The SS pages the MS. The MS answers and the access type in the EGPRS PACKET CHANNEL REQUEST is checked. The SS then activates Cell B and lowers the RF level of Cell A until Cell A is no more suitable. Cell B is preferred by the MS. The MS initiates a Routing Area Update. The access type in the EGPRS PACKET CHANNEL REQUEST is checked.

Maximum duration of the test

4 minutes.

Expected sequence

Step

Direction

Message

Comments

1

SS

The SS is set in network operation mode II and activates cell A. The following messages are sent and shall be received on cell A.

2

MS

The MS is powered up or switched on and initiates an attach.

3

MS -> SS

EGPRS PACKET CHANNEL REQUEST

Access Type = “signalling”.

Received on RACH.

4

MS<->SS

{Completion of the attach procedure}

Macro

5

SS

SS verifies that the correct Access Type has been used in step 3.

6

SS -> MS

PAGING REQUEST TYPE 1

Sent on PCH. Mobility Identity contains P-TMSI of the MS, Packet Page Indication indicates a packet paging procedure.

7

MS -> SS

EGPRS PACKET CHANNEL REQUEST

Access Type = “signalling”.

Received on RACH.

8

SS -> MS

IMMEDIATE ASSIGNMENT REJECT

Request Reference = pertaining to the message received in step 7, Sent on AGCH.

9

SS

SS verifies that the correct Access Type has been used in step 7.

10

SS

Waits 50 seconds in order for the READY timer to expire.

11

The following messages are sent and shall be received on cell B.

12

SS

Activate cell B with lower signal strength than cell A. The RF level of cell A is lowered until cell A is no more suitable.

13

MS

Cell B is preferred by the MS.

14

MS -> SS

EGPRS PACKET CHANNEL REQUEST

Access Type = “signalling”.

Received on RACH.

15

SS -> MS

IMMEDIATE ASSIGNMENT

Request Reference = pertaining to the message received in step 14. Sent on AGCH.

16

MS -> SS

PACKET RESOURCE REQUEST

MS Radio Access Capability indicates that the MS supports EGPRS.

17

SS -> MS

PACKET UPLINK ASSIGNMENT

Assigns an EGPRS TBF

18

MS -> SS

ROUTING AREA UPDATING REQUEST

Update type = ‘RA updating’

19

SS -> MS

ROUTING AREA UPDATING ACCEPT

Update result = ‘RA updated’

20

MS -> SS

ROUTING AREA UPDATING COMPLETE

21

SS

SS verifies that the correct Access Type has been used in step 14.

Specific message contents

None.

52.6.3 Void

52.6.4 Void

52.6.5 EGPRS Packet Access for signalling / EGPRS Packet Channel Request supported / low access priority

52.6.5.1 Conformance requirements

A mobile station configured for “low access priority” (see 3GPP TS 23.060), when attempting to establish a PS connection other than when it is a member of an authorized special access class or in case of a paging response shall, while ignoring MS identities included within PAGING REQUEST messages, start listening to the downlink CCCH until successfully decoding one of the RR messages listed in sub-clause 3.3.1.1.1a. If the RR message indicates an implicit reject for the PS domain (see sub-clause 3.3.1.1.1a) the mobile station shall abort the packet access procedure and initiate the implicit reject procedure (see sub-clause 3.3.1.1.3.2a).

A mobile station configured for "low access priority" attempting a packet access for the purpose of signalling shall set the Low Access Priority Signalling field to "1" in the PACKET RESOURCE REQUEST message (see sub-clause 11.2.16). The Low Access Priority Signalling field shall be set to "0" if the PACKET RESOUCE REQUEST message is sent for any other reason and includes the Low Access Priority Signalling field.

Reference

3GPP TS 44.060 subclause 7.1.3.1 and 3GPP TS 44.018 subclause 3.5.2.1.2.

52.6.5.2 Test purpose

To verify that the low access priority indicator is sent in the PS domain PACKET RESOURCE REQUEST message

52.6.5.3 Method of test

Initial conditions

System Simulator:

1 cell EGPRS supported. EGPRS PACKET CHANNEL REQUEST supported in GPRS cell options.

Mobile Station:

The MS is switched off. The SIM is updated to the test cell.

The MS is configured for “low access priority”

Specific PICS Statements

PIXIT Statements

Test procedure

The MS is switched on or powered up and triggered to perform a GPRS attach. The SS checks that the Low Access Priority Signalling field is set to "1" in the PACKET RESOURCE REQUEST message.

Maximum duration of the test

4 minutes.

Expected sequence

Step

Direction

Message

Comments

1

SS

The SS is set in network operation mode II and activates cell. The following messages are sent and shall be received on cell.

2

MS

The MS is powered up or switched on and initiates an attach.

3

MS -> SS

EGPRS PACKET CHANNEL REQUEST

Access Type = “Two Phase Access Request”.

Received on RACH.

4

SS -> MS

IMMEDIATE ASSIGNMENT

Request Reference = pertaining to the message received in step 3. Sent on AGCH.

5

MS -> SS

PACKET RESOURCE REQUEST

MS Radio Access Capability indicates that the MS supports EGPRS.

SS verifies that the Low Access Priority Signalling field is set to "1"

6

MS<->SS

Completion of macro {GPRS attach procedure}

SS allows MS to complete GPRS attach.

Specific message contents

None.