42.4.5 Network Assisted Cell Change
3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS
42.4.5.1 Network Assisted Cell Change / Expiry of T3206
42.4.5.1.1 Conformance requirements
[3GPP TS 44.060, 8.1.3]
If CCN is enabled (see subclause 5.5.1.1a, 3GPP TS 44.160 subclause 5.4.1.3), the mobile station shall behave as in network control mode NC0 or NC1 up to the point when a new cell has been chosen. It shall then check the CCN_SUPPORTED parameter, if available, that was last received for that cell. This parameter can be sent on BCCH or PBCCH or individually in PACKET MEASUREMENT ORDER or PACKET CELL CHANGE ORDER messages.
If it is available and if it indicates that CCN mode shall not be entered towards that cell, then the mobile station shall perform the cell change and not enter CCN mode.
If it is available and if it indicates that CCN mode shall be entered towards that cell or if it is not available, then instead of performing the cell change, the mobile station shall start timer T3206 and enter the CCN mode. At the first possible opportunity, the MS shall then, when in CCN mode, inform the network about the proposed cell by sending a PACKET CELL CHANGE NOTIFICATION message, stop timer T3206, start timers T3208 and T3210. The PACKET CELL CHANGE NOTIFICATION message shall contain the ARFCN for the BCCH and the BSIC as identity of the proposed cell. The message shall also contain measurement reports for the proposed cell and for other neighbour cells if available. In CCN mode the mobile station shall continue the data transfer and store neighbour cell system information if received in instances of the PACKET NEIGHBOUR CELL DATA message, but not perform the cell change. At receipt of the first PACKET NEIGBOUR CELL DATA message or PACKET CELL CHANGE CONTINUE message or PACKET CELL CHANGE ORDER message, the mobile station shall stop the timer T3210.
The mobile station shall retransmit the PACKET CELL CHANGE NOTIFICATION message once at the first possible opportunity when the timer T3210 expires.
The mobile station shall leave CCN mode when either CCN is no longer enabled (towards all neighbour cells with the CCN_ACTIVE bit or towards the cell that had been re-selected) or when the network has responded with a PACKET CELL CHANGE CONTINUE or PACKET CELL CHANGE ORDER message or when either of the timers T3206 or T3208 have expired.
References
3GPP TS 44.060, subclause 8.8.3
42.4.5.1.2 Test purpose
To verify that the MS leaves the CCN mode and continues cell reselection in NC0 mode when T3206 expires.
42.4.5.1.3 Method of test
Initial conditions
System Simulator:
2 cells, GPRS supported, CCN Active, PCCCH not present.
GPRS ready timer T3314 = infinity
Cell A: RLA_C = -50 dBm
Cell B: RLA_C = -60 dBm
Mobile Station:
MS is in Packet Idle mode, GPRS attached with support of GERAN Feature Package 1 indicated in MS Radio Access Capabilities, and PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
SS establishes a downlink data transfer. SS then waits 4 seconds and lower the signal strength of Cell A to – 80 dBm. The MS will enter CCN mode, and when T3206 expires it will leave CCN mode and continue cell reselection in NC0 mode. The MS change cell and perform a Cell update in the new cell.
Maximum duration of the test
–
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
{Downlink TBF establishment} |
RLC mode: acknowledged, without starting time. |
|
2 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
No valid RRBP |
3 |
SS |
SS waits 4 seconds. |
|
4 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
No valid RRBP |
5 |
Lower signal strength of Cell A to – 80 dBm. |
||
6 |
SS |
SS waits 4 seconds. |
|
7 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
No valid RRBP |
Step 6 and 7 are repeated until the MS access Cell B, but no longer than for 15 seconds. |
|||
The test has failed if the MS has not accessed Cell B within 15 sec from Step 5. |
|||
The following messages are to be sent and received in Cell B. |
|||
8 |
{Uplink dynamic allocation one phase access} |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
9 |
{Completion of uplink RLC data block transfer} |
MS performs a Cell Update. |
Specific message contents
None.
42.4.5.2 Network Assisted Cell Change / No Packet Neighbouring Cell Data and Packet Cell Change Continue
42.4.5.2.1 Conformance requirements
[3GPP TS 44.060, 8.1.1]
The mobile station shall transmit RLC/MAC blocks with the following priority:
- RLC/MAC control blocks containing a Packet Cell Change Notification message;
- Other RLC/MAC control blocks, except Packet Uplink Dummy Control Blocks;
- RLC data blocks;
- RLC/MAC control blocks containing Packet Uplink Dummy Control Blocks.
[3GPP TS 44.060, 8.1.2.2]
Whenever the mobile station receives an RLC data block addressed to itself and with a valid RRBP field in the RLC data block header (i.e., is polled), the mobile station shall transmit a Packet Downlink ACK/NACK message in the uplink radio block specified by the RRBP field whatever the BSN value of the received RLC data block, unless another RLC/MAC control message is waiting to be transmitted, in which case the other RLC/MAC control message shall be sent. Among the other RLC/MAC control blocks the PACKET CELL CHANGE NOTIFICATION message shall be sent with highest priority. However, the mobile station shall transmit an RLC/MAC control message other than a PACKET DOWNLINK ACK/NACK message at most every second time it is polled. Furthermore the mobile station shall not transmit an RLC/MAC control message other than a PACKET DOWNLINK ACK/NACK message if the PACKET DOWNLINK ACK/NACK message would contain a Final Ack Indicator or Channel Request Description IE. The mobile station shall not send a PACKET CONTROL ACKNOWLEDGEMENT message unless otherwise specified.
[44.060, 8.8.3]
After receiving a PACKET CELL CHANGE NOTIFICATION message from the mobile station the network can behave in different ways as described below.
1) The network responds with a PACKET CELL CHANGE CONTINUE message.
If a mobile station as response to a PACKET CELL CHANGE NOTIFICATION message receives a PACKET CELL CHANGE CONTINUE message without receiving any neighbour cell system information, the mobile station shall stop timer T3208, stop timer T3210 if still running, leave CCN mode and continue cell reselection in NC0/NC1 mode.
References
3GPP TS 44.060, subclause 8.1.1, 8.1.2.2 and 8.8.3
42.4.5.2.2 Test purpose
1) To verify that MS sends a PACKET CELL CHANGE NOTIFICATION when it enters CCN mode.
2) To verify that MS leaves CCN mode and continues cell reselection in NC0 mode when a PACKET CELL CHANGE CONTINUE is received when no PACKET NEIGHBOUR CELL DATA has been received.
42.4.5.2.3 Method of test
Initial conditions
System Simulator:
2 cells, GPRS supported, CCN Active, PCCCH not present.
GPRS ready timer T3314 = infinity
Cell A: RLA_C = -50 dBm
Cell B: RLA_C = -60 dBm
Mobile Station:
MS is in Packet Idle mode, GPRS attached with support of GERAN Feature Package 1 indicated in MS Radio Access Capabilities, and PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
SS establishes a downlink TBF and sends 4 RLC data blocks, the last one containing FBI = 0 and a valid RRBP. The MS sends a PACKET DOWNLINK ACK/NACK. The signal strength of Cell A is lowered to – 80 dBm. The downlink continues until MS sends PACKET CELL CHANGE NOTIFICATION. SS sends PACKET CELL CHANGE CONTINUE and verifies that the MS change to Cell B and does a Cell Update.
Maximum duration of the test
–
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
{Downlink TBF establishment} |
RLC mode: acknowledged, without starting time. |
|
2 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
3 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
4 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
5 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
The data block contains FBI=0 and a valid RRBP. |
6 |
MS -> SS |
PACKET DOWNLINK ACK/NACK |
Received on the specified RRBP of downlink PACCH. |
7 |
Lower signal strength of Cell A to –80 dBm. |
||
8 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
9 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
10 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
11 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
The data block contains FBI=0 and a valid RRBP. |
12 |
MS -> SS |
PACKET DOWNLINK ACK/NACK Or PACKET CELL CHANGE NOTIFICATION |
|
13 |
Step 8 to 12 are repeated until a PACKET CELL CHANGE NOTIFICATION is received in step 12, but no longer than 15 sec. |
||
The test has failed if no PACKET CELL CHANGE NOTIFICATION is received in Cell A within 15 sec from Step 7. |
|||
14 |
SS -> MS |
PACKET CELL CHANGE CONTINUE |
|
The following messages are to be sent and received in Cell B. |
|||
15 |
{Uplink dynamic allocation one phase access} |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
16 |
{Completion of uplink RLC data block transfer} |
MS performs a Cell Update. |
Specific message contents
PACKET CELL CHANGE CONTINUE in Step 14
Information element |
Value/remark |
< PAGE_MODE : bit (2) > |
00 |
0 |
0 |
< GLOBAL_TFI : Global TFI IE > |
1 <5 bit Downlink TFI> |
0 | 1 |
1 |
< ARFCN : bit (10) > |
ARFCN of Cell B. |
< BSIC : bit (6) > |
BSIC of Cell B. |
< CONTAINER_ID : bit (2) > |
00 |
42.4.5.3 Void
42.4.5.4 Network Assisted Cell Change / Packet Neighbour Cell Data and Packet Cell Change Order
42.4.5.4.1 Conformance requirements
[3GPP TS 44.060, 5.5.1.4.3]
A mobile station supporting the Network Assisted Cell Change procedures shall implement the request for acquisition of system information (see clause 5.5.1.1a).
The PACKET PSI STATUS (respectively PACKET SI STATUS) message shall indicate the present status of PSI (respectively SI) messages stored in or requested but not received by the mobile station. The mobile station shall include as many PSI (respectively SI) message types that fit into the Received PSI Message List (respectively Received SI Message List) construction in the PACKET PSI STATUS (respectively PACKET SI STATUS) message and that meet the following criteria: The PACKET PSI STATUS (respectively PACKET SI STATUS) message is sent on PACCH when the mobile station is in packet transfer mode. The first sending of this message during the acquisition of PBCCH (respectively BCCH) information shall take place at the first suitable opportunity after the acquisition is initiated:
– The PSI (respectively SI) message type is relevant for the mobile station, based on the features the mobile station supports (e.g. non-GSM and multi-RAT capabilities); and
– In case of optional PSI (respectively SI) messages types, the PSI (respectively SI) message type shall be indicated by the network as present on PBCCH (respectively BCCH).
If the presence of an optional PSI (respectively SI) message type cannot be determined, based on the information received, the mobile station shall assume that the optional PSI (respectively SI) message type is present.
NOTE 1: On PBCCH, the presence of optional PSI messages is indicated in PSI1 and PSI2.
NOTE 2: On BCCH, SI2, SI3, SI4 and, if present, SI9 indicate the presence of optional SI messages, except SI1. The presence of SI1 can be determined by reading the BCCH Norm block at TC = 0.
The message type value for these PSI (respectively SI) messages shall be included in the Received PSI Message List (respectively Received SI Message List) in the PACKET PSI STATUS (respectively PACKET SI STATUS) message. The network may use this information to determine which PSI (respectively SI) message types the mobile station is able to receive and the present status of the PSI (respectively SI) messages stored in the mobile station.
[3GPP TS 44.060, 8.8.3]
After receiving a PACKET CELL CHANGE NOTIFICATION message from the mobile station the network can behave in different ways as described below.
3) The network sends first necessary system information for the cell proposed in the PACKET CELL CHANGE NOTIFICATION message, or for any other cell, in one or more instances of the PACKET NEIGHBOUR CELL DATA message and sends then a PACKET CELL CHANGE ORDER message.
The mobile station shall store the received system information as specified in clause 8.8.1. When the first instance of the PACKET NEIGHBOUR CELL DATA message is received, the mobile station shall stop timer T3210 if still running. When the PACKET CELL CHANGE ORDER message is received, the mobile station shall stop timer T3208, leave CCN mode and follow the procedures as specified for the Packet Cell Change Order (clause 8.4) and in clause 8.8.1.
References
3GPP TS 44.060, subclause 5.5.1.4.3 and 8.8.3
42.4.5.4.2 Test purpose
- To verify that the MS applies CCN when CCN is indicated in SI13 of the serving cell by sending a PACKET CELL CHANGE NOFITICATION when deciding to make a cell reselection.
- To verify that MS leaves CCN mode when it receives a PACKET CELL CHANGE ORDER and follows the procedures as specified in the PACKET CELL CHANGE ORDER.
- To verify that MS uses the System Information received in PACKET NEIGHBOUR CELL DATA when accessing the new cell.
- To verify that MS requests remaining System Information messages when having accessed the new cell by sending PACKET SI STATUS.
42.4.5.4.3 Method of test
Initial conditions
System Simulator:
3 cells, GPRS supported, CCN Active in SI13, PCCCH not present.
GPRS ready timer T3314 = infinity
Cell A: The indication of Cell C is removed in SI2. RLA_C = -50 dBm
Cell B: Supports PACKET SI STATUS. No System Information is broadcast on the BCCH, except SI3. This is only made to make it possible to verify that the MS uses the information in Packet Neighbour Cell Data. RLA_C = -60 dBm
Cell C: The cell is not active at the start of the test.
Mobile Station:
MS is in Packet Idle mode, GPRS attached with support of GERAN Feature Package 1 indicated in MS Radio Access Capabilities, and PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
The MS is triggered to initiate packet uplink transfer. SS assigns resources to the MS and it starts to send uplink data that the SS acknowledges. During the uplink the signal strength of cell A is lowered to – 80 dBm. The MS enters CCN mode and sends PACKET CELL CHANGE NOTIFICATION. The MS then continues to send uplink data. SS sends a complete set of PACKET NEIGHBOUR CELL DATA with SI1, SI3 and SI13 of Cell B to the MS. The SS then sends a PACKET CELL CHANGE ORDER that orders the MS to change to Cell B.
The MS requests resources for an uplink in the Cell B and continues the uplink. The MS then requests the remaining SI messages by sending PACKET SI STATUS(Note: During the acquisition of BCCH information the MS may send up to three extra PACKET SI STATUS messages). SS verifies that the MS indicates that it has received the SI sent in PACKET NEIGHBOUR CELL DATA. SS sends the missing SI to the MS in PACKET SERVING CELL DATA messages during the uplink.
To ensure that the MS has received the requested SI, Cell A is deactivated and Cell C is activated with signal strength set to – 50 dBm. The signal strength of cell B is lowered to – 80 dBm. The MS enters CCN mode and sends PACKET CELL CHANGE NOTIFICATION. The SS then sends PACKET CELL CHANGE ORDER and the MS changes to Cell C. The MS requests resources for an uplink in the new cell and re-establishes and completes the uplink transfer in the new cell.
Maximum duration of the test
–
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
{Uplink dynamic allocation one phase access or two phase access } |
n = 10000 octets. USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
2 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
3 |
MS -> SS |
RLC DATA BLOCK |
|
4 |
SS -> MS |
PACKET UPLINK ACK/NACK |
|
5 |
SS |
Lower signal strength of Cell A to –80 dBm. |
|
6 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
7 |
MS -> SS |
RLC DATA BLOCK Or PACKET CELL CHANGE NOTIFICATION |
|
8 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
9 |
Steps 7 and 8 are repeated until a PACKET CELL CHANGE NOTIFICATION is received in step 7, but no longer than 15 sec. |
||
The test has failed if no PACKET CELL CHANGE NOTIFICATION is received in Cell A within 15 sec from Step 5. |
|||
10 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
11 |
MS -> SS |
RLC DATA BLOCK |
|
12 |
SS -> MS |
PACKET NEIGHBOUR CELL DATA |
See specific message contents |
13 |
Step 10 to 12 are repeated until all instances of PACKET NEIGHBOUR CELL DATA are sent. |
||
14 |
SS -> MS |
PACKET CELL CHANGE ORDER |
See specific message contents |
The following messages are to be sent and received in Cell B. |
|||
15 |
{Uplink dynamic allocation one phase access or two phase access } |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
16 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
17 |
MS -> SS |
RLC DATA BLOCK Or PACKET SI STATUS Or PACKET RESOURCE REQUEST |
|
Step 18 is performed only if a PACKET RESOURCE REQUEST is received in Step 17. |
|||
18 |
SS -> MS |
PACKET UPLINK ASSIGNMENT |
Repeats the PDTCH assignment given in Step 15. Send PACKET DOWNLINK DUMMY CONTROL BLOCK with USF assigned to the MS and continue with step 17 |
19 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
20 |
Steps 17 to 19 are repeated until both a PACKET SI STATUS and an RLC Data Block are received in step 17. The Packet SI Status shall be sent within 10 sec of accessing the cell. Verify that the MS not requests SI that was sent in step 12. Note: During the acquisition of BCCH information the MS may send up to three extra PACKET SI STATUS messages If the RLC DATA BLOCK with BSN = 0 received in Step 17 contains an empty LLC PDU as the first LLC PDU, Steps 17 to 19 are further repeated until a PACKET RESOURCE REQUEST is received in Step 17. NOTE: The empty LLC PDU may be accompanied by another low priority RLC data block (with Packet Resource Request and Packet Uplink Assignment or Packet Timeslot Reconfigure as required), in order to ensure that the radio resources are used efficiently. |
||
21 |
SS -> MS |
PACKET SERVING CELL DATA |
See specific message contents |
22 |
Step 21 is repeated until all instances of PACKET SERVING CELL DATA are sent. |
||
23 |
SS |
Cell A is deactivated and Cell C is activated and set to – 50 dBm. |
|
24 |
SS |
Lower signal strength of Cell B to –80 dBm. |
|
25 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
26 |
MS -> SS |
RLC DATA BLOCK Or PACKET CELL CHANGE NOTIFICATION Or PACKET SI STATUS |
|
27 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
28 |
Steps 26 and 27 are repeated until a PACKET CELL CHANGE NOTIFICATION is received in step 26, but no longer than 15 sec. |
||
The test has failed if no PACKET CELL CHANGE NOTIFICATION is received in Cell B within 15 sec from Step 24. |
|||
29 |
SS -> MS |
PACKET CELL CHANGE ORDER |
See specific message contents |
The following messages are to be sent and received in Cell C. |
|||
30 |
{Uplink dynamic allocation one phase access or two phase access } |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
31 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
32 |
MS -> SS |
RLC DATA BLOCK Or PACKET RESOURCE REQUEST |
|
Step 33 is performed only if a PACKET RESOURCE REQUEST is received in Step 32. |
|||
33 |
SS -> MS |
PACKET UPLINK ASSIGNMENT |
Repeats the PDTCH assignment given in Step 30. Send PACKET DOWNLINK DUMMY CONTROL BLOCK with USF assigned to the MS and continue with step 32. |
34 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
35 |
If the RLC DATA BLOCK with BSN = 0 received in Step 32 contains an empty LLC PDU as the first LLC PDU, Steps 32 to 34 are repeated until a PACKET RESOURCE REQUEST is received in Step 32. NOTE: The empty LLC PDU may be accompanied by another low priority RLC data block (with Packet Resource Request and Packet Uplink Assignment or Packet Timeslot Reconfigure as required), in order to ensure that the radio resources are used efficiently. |
||
36 |
Completion of {Uplink dynamic allocation} |
Specific message contents
PACKET NEIGHBOUR CELL DATA in Step 12
The message contains the default SI1, SI3 and SI13 for Cell B.
Information element |
Value/remark |
< PAGE_MODE : bit (2) > |
00 (Normal Paging) |
< GLOBAL_TFI : Global TFI IE > |
0 <5 bit Uplink TFI> |
< CONTAINER_ID : bit (2) > |
01 for SI belonging to Cell B |
< SPARE :bit(1)> |
0 |
< CONTAINER INDEX :bit (5)> |
00000 to the index needed to send all SI messages |
0 | 1 |
0 No ARFCN or BSIC |
Container repetition struct |
|
< PD : bit(3)> |
000, BCCH (LAPDm) |
PACKET CELL CHANGE ORDER in Step 14
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 |
0 |
< IMMEDIATE_REL > |
1 (Immediate abort of operation in the old cell is required) |
< ARFCN > |
ARFCN of Cell B |
< BSIC > |
BSIC of Cell B |
< NETWORK_CONTROL_ORDER : bit(2) > |
00 (NC0) |
0 | 1 |
0 |
0 | 1 < NC_FREQUENCY_LIST > |
0 |
Null | 0 | 1 |
1 Additions in R98 |
Null | 0 | 1 |
0 LSA Parameters not included |
Null | 0 | 1 |
1 Additions in R99 |
< ENH Measurement parameters > |
|
{ 0 < BA_IND : bit > < 3G_BA_IND : bit > | 1 < PSI3_CHANGE_MARK : bit(2) > } |
000 |
< PMO_IND : bit > |
0 |
< REPORT_TYPE : bit > |
1 |
< REPORTING_RATE : bit > |
0 |
< INVALID_BSIC_REPORTING : bit > |
0 |
0 | 1< 3G Neighbour Cell Description > |
0 (not present) |
0 | 1 < GPRS REP PRIORITY Description > |
0 (not present) |
0 | 1 < GPRS MEASUREMENT Parameters Description > |
0 (not present) |
0 | 1 < GPRS 3G MEASUREMENT Parameters Description > |
0 (not present) |
Null | 0 | 1 |
1 Additions in Rel4 |
< CCN_ACTIVE : bit (1) > |
1 |
0 | 1 < CONTAINER_ID : bit (2) > |
1 |
< CONTAINER_ID : bit (2) > |
01(The same as PACKET NEIGHBOUR CELL DATA in Step 12) |
0 | 1 < CCN Support Description > |
0 |
< padding bits > |
PACKET SERVING CELL DATA in Step 21
The message contains the default SI2, SI2bis (when indicated in SI2) and SI4 for Cell B.
Information element |
Value/remark |
< MESSAGE_TYPE : bit (6) > |
001101 |
< PAGE_MODE : bit (2) > |
00 (Normal Paging) |
0 < GLOBAL_TFI : Global TFI IE > |
0 <5 bit Uplink TFI> |
< spare : bit (4) > |
0000 |
< CONTAINER INDEX :bit (5)> |
00000 to the index needed to send all SI messages |
Container repetition struct |
|
< PD : bit(3)> |
000, BCCH (LAPDm) |
PACKET CELL CHANGE ORDER in Step 29
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 |
0 |
< IMMEDIATE_REL > |
1 (Immediate abort of operation in the old cell is required) |
< ARFCN > |
ARFCN of Cell C |
< BSIC > |
BSIC of Cell C |
< NETWORK_CONTROL_ORDER : bit(2) > |
00 (NC0) |
0 | 1 |
0 |
0 | 1 < NC_FREQUENCY_LIST > |
0 |
Null | 0 | 1 |
1 Additions in R98 |
Null | 0 | 1 |
0 LSA Parameters not included |
Null | 0 | 1 |
1 Additions in R99 |
< ENH Measurement parameters > |
|
{ 0 < BA_IND : bit > < 3G_BA_IND : bit > | 1 < PSI3_CHANGE_MARK : bit(2) > } |
000 |
< PMO_IND : bit > |
0 |
< REPORT_TYPE : bit > |
1 |
< REPORTING_RATE : bit > |
0 |
< INVALID_BSIC_REPORTING : bit > |
0 |
0 | 1< 3G Neighbour Cell Description > |
0 (not present) |
0 | 1 < GPRS REP PRIORITY Description > |
0 (not present) |
0 | 1 < GPRS MEASUREMENT Parameters Description > |
0 (not present) |
0 | 1 < GPRS 3G MEASUREMENT Parameters Description > |
0 (not present) |
Null | 0 | 1 |
1 Additions in Rel4 |
< CCN_ACTIVE : bit (1) > |
1 |
0 | 1 < CONTAINER_ID : bit (2) > |
0 |
0 | 1 < CCN Support Description > |
0 |
< padding bits > |
42.4.5.5 Network Assisted Cell Change / Expiry of T3208 and T3210
42.4.5.5.2 Conformance requirements
[3GPP TS 44.060, 8.8.3]
After receiving a PACKET CELL CHANGE NOTIFICATION message from the mobile station the network can behave in different ways as described below.
5) No network response
When timer T3210 expires, the mobile station shall retransmit once the PACKET CELL CHANGE NOTIFICATION message at the first possible opportunity.
When timer T3208 expires, the mobile station shall leave CCN mode and continue cell reselection in NC0/NC1 mode as described in clause 5.5.1.1 and in [15].
References
3GPP TS 44.060, subclause 8.8.3
42.4.5.5.2 Test purpose
1. To verify that the MS retransmits the PACKET CELL CHANGE NOTIFICATION when T3210 expires 300 ms after no reception of any PACKET NEIGHBOUR CELL DATA, PACKET CELL CHANGE CONTINUE, PACKET MEASURMENT ORDER or PACKET CELL CHANGE ORDER.
2. To verify that MS leaves CCN mode when T3208 expires and continues cell reselection in NC0 mode.
42.4.5.5.3 Method of test
Initial conditions
System Simulator:
2 cells, GPRS supported, CCN Active in SI13, PCCCH not present.
Cell A: RLA_C = -50 dBm
Cell B: RLA_C = -60 dBm
Mobile Station:
MS is in Packet Idle mode, GPRS attached with support of GERAN Feature Package 1 indicated in MS Radio Access Capabilities, and PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
The MS is triggered to initiate packet uplink transfer. SS assigns resources to the MS and it starts to send uplink data that the SS acknowledge. During the uplink the signal strength of Cell A is lowered to – 80 dBm. The MS enters CCN mode and sends PACKET CELL CHANGE NOTIFICATION and starts timer T3208 and T3210. The MS then continues to send uplink data. When timer T3210 expires, the MS retransmits PACKET CELL CHANGE NOTIFICATION once. When timer T3208 expires, the MS leaves CCN mode and performs cell reselection in NC0 mode. The MS change to Cell B and complete the upload.
Maximum duration of the test
–
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
{Uplink dynamic allocation one phase access or two-phase access} |
n = 5000 octets. USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
2 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
3 |
MS -> SS |
RLC DATA BLOCK |
|
4 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF NOT assigned to the MS |
5 |
SS |
Lower signal strength of Cell A to –80 dBm. |
|
6 |
SS->MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
7 |
MS -> SS |
RLC DATA BLOCK Or PACKET CELL CHANGE NOTIFICATION |
PCCN Sending = 0 (First sending) |
8 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
9 |
Step 7 and 8 are repeated until the first PACKET CELL CHANGE NOTIFICATION is received in step 7, but no longer than 15 sec. |
||
The test has failed if no PACKET CELL CHANGE NOTIFICATION is received in Cell A within 15 sec from Step 5. |
|||
10 |
SS->MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
11 |
MS -> SS |
RLC DATA BLOCK Or PACKET CELL CHANGE NOTIFICATION |
Sent at expiry of T3210. PCCN Sending = 1 (Second sending) SS shall schedule USF often enough so T3210 timer requirement can be met. |
12 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
13 |
Step 11 and 12 are repeated until a PACKET CELL CHANGE NOTIFICATION is received in step 11. It is verify that the PACKET CELL CHANGE NOTIFICATION was sent after expiry of T3210 – 10% from the previous PCCN received in Step 7. |
||
14 |
SS->MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
15 |
MS -> SS |
RLC DATA BLOCK |
|
16 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
17 |
Steps 15 and 16 are repeated for at least T3208 (0.96 sec) from the first PCCN sending (in step 7) but no more than 5 sec. |
||
18 |
SS |
SS verifies that no more RLC DATA BLOCKS are received from the MS. |
|
The following messages are to be sent and received in Cell B. |
|||
19 |
{Uplink dynamic allocation one phase or two-phase access} |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
20 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
21 |
MS -> SS |
RLC DATA BLOCK Or PACKET RESOURCE REQUEST |
|
Step 22 is performed only if a PACKET RESOURCE REQUEST is received in Step 21. |
|||
22 |
SS -> MS |
PACKET UPLINK ASSIGNMENT |
Repeats the PDTCH assignment given in Step 19. Send PACKET DOWNLINK DUMMY CONTROL BLOCK with USF assigned to the MS and continue with step 21. |
23 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
24 |
If the RLC DATA BLOCK with BSN = 0 received in Step 21 contains an empty LLC PDU as the first LLC PDU, Steps 21 to 23 are repeated until a PACKET RESOURCE REQUEST is received in Step 21. NOTE: The empty LLC PDU may be accompanied by another low priority RLC data block (with Packet Resource Request and Packet Uplink Assignment or Packet Timeslot Reconfigure as required), in order to ensure that the radio resources are used efficiently. |
||
25 |
{Completion of uplink RLC data block transfer} |
Specific message contents
None.
42.4.5.6 Network Assisted Cell Change / Entering packet idle mode
42.4.5.6.1 Conformance requirements
[3GPP TS 44.060, 8.8.3]
The CCN mode is only valid in Packet Transfer Mode. If the mobile station is in CCN mode when entering packet idle mode, the mobile station shall stop the timers T3206 and T3208, stop timer T3210 if still running, leave CCN mode and continue the cell reselection procedure according to the NC0/NC1 procedures. If PACKET NEIGHBOUR CELL DATA messages are received on the PACCH before entering packet idle mode and the cell identity parameters are included, this information may then be used at the next cell change.
References
3GPP TS 44.060, subclause 8.8.3
42.4.5.6.2 Test purpose
To verify that the MS continues according to the normal packet idle mode cell reselection procedures when leaving CCN mode and entering packet idle mode.
42.4.5.6.3 Method of test
Initial conditions
System Simulator:
2 cells, GPRS supported, CCN Active in SI13, PCCCH not present.
GPRS ready timer T3314 = infinity
T3192 = 0 ms
Mobile Station:
MS is in Packet Idle mode, GPRS attached with support of GERAN Feature Package 1 indicated in MS Radio Access Capabilities, and PDP context 2 established.
Cell A: RLA_C = -50 dBm
Cell B: RLA_C = -60 dBm
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
SS establishes a downlink TBF and sends 4 RLC data blocks, the last one containing FBI = 0 and a valid RRBP. The MS sends a PACKET DOWNLINK ACK/NACK. The signal strength of Cell A is lowered to –80 dBm. The downlink continues until MS sends PACKET CELL CHANGE NOTIFICATION. SS sends a RLC block that contains FBI = 1 and a valid RRBP. The MS sends a PACKET DOWNLINK ACK/NACK containing FINAL_ACK_INDICATION = 1. The MS leaves CCN mode and enters packet idle mode and performs cell reselection in NC0 mode. The MS performs a Cell update in the new cell.
Maximum duration of the test
–
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
{Downlink TBF establishment} |
RLC mode: acknowledged, without starting time. |
|
2 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
3 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
4 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
5 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
The data block contains FBI=0 and a valid RRBP. |
6 |
MS -> SS |
PACKET DOWNLINK ACK/NACK |
Received on the specified RRBP of downlink PACCH. |
7 |
Lower signal strength of Cell A to –80 dBm. |
||
8 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
9 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
10 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
11 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
The data block contains FBI=0 and a valid RRBP. |
12 |
MS -> SS |
PACKET DOWNLINK ACK/NACK Or PACKET CELL CHANGE NOTIFICATION |
|
13 |
Steps 8 to 12 are repeated until a PACKET CELL CHANGE NOTIFICATION is received in step 12, but no longer than 15 sec. |
||
The test has failed if no PACKET CELL CHANGE NOTIFICATION is received in Cell A within 15 sec from Step 7. |
|||
14 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
The data block contains FBI=1 and a valid RRBP. |
15 |
MS -> SS |
PACKET DOWNLINK ACK/NACK |
Received on the specified RRBP of downlink PACCH and contains FINAL_ACK_INDICATION = 1. |
The following messages are to be sent and received in Cell B. |
|||
16 |
{Uplink dynamic allocation one phase access} |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
17 |
{Completion of uplink RLC data block transfer} |
MS performs a Cell Update. |
Specific message contents
None.
42.4.5.7 Network Assisted Cell Change / CCN not supported towards target cell
42.4.5.7.1 Conformance requirements
The SI2quater message may also contain information, the CCN Support description, to be used when CCN is enabled in the serving cell, see 3GPP TS 44.060. This CCN Support description is associated with the Neighbour Cell list (see 3.4.1.2.1.3) having the same BA_IND value and 3G_BA_IND value. Each CCN_SUPPORTED bit of this field relates to indices of the Neighbour Cell list, starting with index 0. The CCN Support description may be received before the corresponding Neighbour Cell list.
Indices exceeding the value 95 or the number of cells in the Neighbour Cell List shall be ignored. If there are fewer indices than the number of cells in the Neighbour Cell List, the value 0 shall be assumed for the missing bits.
When this information is not present but CCN is enabled in the serving cell, the mobile station shall assume that CCN is enabled towards all neighbour cells.
References
3GPP TS 44.018, subclause 3.4.1.2.1.8
42.4.5.7.2 Test purpose
To verify that the MS does not apply CCN on a target cell when the CCN support description not is set for that cell.
42.4.5.7.3 Method of test
Initial conditions
System Simulator:
2 cells, GPRS supported, PCCCH not present.
Cell A: CCN Active. SI3 indicates SI2quater broad cast on BCCH norm. SI2quater contains a CCN Support Description indicating that CCN not is supported towards Cell B. RLA_C = -50 dBm
Cell B: CCN Active. RLA_C = -60 dBm
Mobile Station:
MS is in Packet Idle mode, GPRS attached with support of GERAN Feature Package 1 indicated in MS Radio Access Capabilities, and PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
The MS is given time to read all SI including SI2quater in idle mode.
The MS is triggered to initiate packet uplink transfer. SS assigns resources to the MS and it starts to send uplink data that the SS acknowledge. During the uplink the signal strength of Cell A is lowered to – 80 dBm. The MS enters CCN mode but does not send any PACKET CELL CHANGE NOTIFICATION. The MS continues to send uplink data. After w while, the MS selects cell B. The MS requests resources for an uplink in cell B and completes the uplink transfer.
Maximum duration of the test
–
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
{Uplink dynamic allocation one phase access or two phase access} |
n = 5000 octets. USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
2 |
SS->MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS. |
3 |
MS -> SS |
RLC DATA BLOCK |
|
4 |
SS -> MS |
PACKET UPLINK ACK/NACK |
|
5 |
SS |
Lower signal strength of Cell A to –80 dBm. |
|
6 |
SS->MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS. |
7 |
MS -> SS |
RLC DATA BLOCK |
|
8 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS . |
9 |
Step 7 and 8 are repeated until the MS access Cell B, but no longer than 18 sec. The test has failed if the MS sends data after 18 sec from Step 5. |
||
The test has failed if a PACKET CELL CHANGE NOTIFICATION is received in Cell A or if the MS has not accessed Cell B within 20 sec from Step 5. |
|||
The following messages are to be sent and received in Cell B. |
|||
10 |
{Uplink dynamic allocation one phase access or two phase access} |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
11 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
12 |
MS -> SS |
RLC DATA BLOCK Or PACKET RESOURCE REQUEST |
|
Step 13 is performed only if a PACKET RESOURCE REQUEST is received in Step 12. |
|||
13 |
SS -> MS |
PACKET UPLINK ASSIGNMENT |
Repeats the PDTCH assignment given in Step 10. Send PACKET DOWNLINK DUMMY CONTROL BLOCK with USF assigned to the MS and continue with step 12. |
14 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
15 |
If the RLC DATA BLOCK with BSN = 0 received in Step 12 contains an empty LLC PDU as the first LLC PDU, Steps 12 to 14 are repeated until a PACKET RESOURCE REQUEST is received in Step 12. NOTE: The empty LLC PDU may be accompanied by another low priority RLC data block (with Packet Resource Request and Packet Uplink Assignment or Packet Timeslot Reconfigure as required), in order to ensure that the radio resources are used efficiently. |
||
16 |
Completion of {Uplink dynamic allocation} |
Specific message contents
SYSTEM INFORMATION TYPE 2QUATER with a CCN support description based on the BA list in SI2
Information Element |
Value/remark |
< RR management Protocol Discriminator bit (4) > |
‘0110’B |
< Skip Indicator : bit (4) > |
‘0000’B |
< Message type : bit (8) > |
‘0000 0111’B |
< SI2 quarter Rest Octets > |
|
< BA_IND : bit > |
Same BA_IND as for SI2 |
< 3G_BA_IND : bit > |
0 |
< MP_CHANGE_MARK : bit > |
0 |
< SI2quater _INDEX : bit (4) > |
‘0000’B |
< SI2quater_COUNT : bit (4) > |
‘0000’B |
0 | 1 < Measurement_Parameters Description > |
0 |
0 | 1 < GPRS_Real Time Difference Description > |
0 |
0 | 1 < GPSR_BSIC Description > |
0 |
0 | 1 < GPRS_REPORT PRIORITY Description > |
0 |
0 | 1 < GPRS_Measurement_Parameters Description > |
0 |
0 | 1 < NC Measurement Parameters > |
0 |
0 | 1 < extension length : bit (8) > |
1 ‘0000 1111’B (extension length 15) |
< SI2q Extension Information > |
|
0 | 1 < CCN Support Description > |
1 |
< Number_Cells : bit (7) > |
‘000 1000’B (8 neighbours) |
{ CCN_SUPPORTED : bit } * (val(Number_Cells)) ; |
‘1000 0000’B Bitmap will all index but the index coresponding to Cell 2 set to 1 (indicating CCN not supported) |
0 | 1 < 3G Neighbour Cell Description > |
0 |
0 | 1 < 3G Measurement_Parameters Description > |
0 |
0 | 1 < GPRS_3G_MEASUREMENT Parameters Description > |
0 |
42.4.5.8 Network Assisted Cell Change / NC mode change
42.4.5.8.1 Conformance requirements
[3GPP TS 44.060, 8.8.3 & 4)]
The network orders the mobile station into NC2 mode.
A mobile station may in response to a PACKET CELL CHANGE NOTIFICATION message sent to the network receive a PACKET MEASUREMENT ORDER message indicating NC2 mode. When the mobile station receives the NC2 order it shall leave CCN mode, stop timer T3208, stop timer T3210 if still running, and go into NC2 mode.
References
3GPP TS 44.060, subclause 8.8.3
42.4.5.8.2 Test purpose
To verify that the MS leaves the CCN mode and enters NC2 mode on receipt of Packet Measurement Order and the NC2 parameters.
42.4.5.8.3 Method of test
Initial conditions
System Simulator:
2 cells, GPRS supported, CCN Active, RXLEV_ACCESS_MIN = -90dBm.
GPRS ready timer T3314 = infinity
Cell A: RLA_C = -50 dBm
Cell B: RLA_C = -60 dBm
Mobile Station:
MS is in Packet Idle mode, GPRS attached with support of GERAN Feature Package 1 indicated in MS Radio Access Capabilities, and PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
SS establishes a downlink TBF and sends 4 RLC data blocks, the last one containing FBI = 0 and a valid RRBP. The MS sends a PACKET DOWNLINK ACK/NACK. The signal strength of Cell A is lowered to – 80 dBm. The downlink continues until MS sends PACKET CELL CHANGE NOTIFICATION. SS sends PACKET MEASUREMENT ORDER setting NC2 and then sends RLC data blocks, regularly polling the MS with a valid RRBP, and verifies that the MS has entered NC2 mode: the MS leaves CCN mode, starts reporting measurements and does not perform any cell reselection on its own as required in NC2.
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
{Downlink TBF establishment} |
RLC mode: acknowledged, without starting time. |
|
2 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
3 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
4 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
5 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
The data block contains FBI=0 and a valid RRBP. |
6 |
MS -> SS |
PACKET DOWNLINK ACK/NACK |
Received on the specified RRBP of downlink PACCH. |
7 |
Lower signal strength of Cell A to –80 dBm. |
||
8 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
9 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
10 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
|
11 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
The data block contains FBI=0 and a valid RRBP. |
12 |
MS -> SS |
PACKET DOWNLINK ACK/NACK Or PACKET CELL CHANGE NOTIFICATION |
Sent on PACCH. |
13 |
Step 8 to 12 are repeated until a PACKET CELL CHANGE NOTIFICATION is received in step 12, but no longer than 10 sec. |
||
The test has failed if no PACKET CELL CHANGE NOTIFICATION is received in Cell A within 10 sec from Step 7. |
|||
14 |
SS->MS |
PACKET MEASUREMENT ORDER |
-Sent on PACCH. -Contains NETWORK_CONTROL_ORDER and NC_REPORTING_PERIOD_T See specific message contents |
15 |
SS -> MS |
10 RLC data blocks |
SS sends data, last block is polling. |
16 |
MS -> SS |
PACKET DOWNLINK ACK/NACK Or PACKET MEASUREMENT REPORT |
Sent on PACCH. PACKET MEASUREMENT REPORT Contains the "NC measurement report struct" on PACCH |
17 |
Repeat steps 15 to 16 until two PMRs are received. |
||
18 |
SS -> MS |
10 RLC data blocks |
SS sends data, last block is polling. |
19 |
MS -> SS |
PACKET DOWNLINK ACK/NACK Or PACKET MEASUREMENT REPORT |
Sent on PACCH. PACKET MEASUREMENT REPORT Contains the "NC measurement report struct" on PACCH |
20 |
Repeat steps 18 to 19 during 10s. |
||
21 |
SS -> MS |
DOWNLINK RLC DATA BLOCK |
FBI bit set to ‘1’ and valid RRBP field |
22 |
MS -> SS |
PACKET DOWNLINK ACK/NACK |
In the uplink block specified by the RRBP field. Final Ack Indicator bit set to ‘1’ |
Specific message contents
PACKET MEASUREMENT ORDER in step 14:
NC Measurement parameters |
|
NETWORK_CONTROL_ORDER |
10 (NC2) |
NC_REPORTING_PERIOD_T |
001 (0,96 s) |
42.4.5.9 Network Assisted Cell Change / NC mode change / Packet Neighbour Cell Data
42.4.5.9.1 Conformance requirements
[3GPP TS 44.060, 8.8.3 & 4)]
The network orders the mobile station into NC2 mode.
A mobile station may in response to a PACKET CELL CHANGE NOTIFICATION message sent to the network receive a PACKET MEASUREMENT ORDER message indicating NC2 mode. When the mobile station receives the NC2 order it shall leave CCN mode, stop timer T3208, stop timer T3210 if still running, and go into NC2 mode.
When the NC2 mode has been ordered, the network may send PACKET NEIGHBOUR CELL DATA messages on the PACCH before sending the PACKET CELL CHANGE ORDER to the mobile station.
42.4.5.9.2 References
3GPP TS 44.060, subclause 5.5.1.4.3 and 8.8.3
42.4.5.9.3 Test purpose
1. To verify that MS leaves CCN mode when it receives a PACKET MEASUREMENT ORDER activating NC2 and follows the NC2 procedures.
2. To verify that MS uses the System Information received in PACKET NEIGHBOUR CELL DATA when accessing the new cell.
3. To verify that MS requests remaining System Information messages when having accessed the new cell by sending PACKET SI STATUS.
42.4.5.9.4 Method of test
42.4.5.9.4.1 Initial conditions
System Simulator:
3 cells, GPRS supported, CCN Active in SI13, PCCCH not present.
GPRS ready timer T3314 = infinity
Cell A: The indication of Cell C is removed in SI2. RLA_C = -50 dBm
Cell B: Supports PACKET SI STATUS. No System Information is broadcast on the BCCH, except SI3. This is only made to make it possible to verify that the MS uses the information in Packet Neighbour Cell Data. RLA_C = -60 dBm. PSI13 shall be transmitted during transfer mode on cell B to prevent any TBF suspension.
Cell C: The cell is not active at the start of the test.
Mobile Station:
MS is in Packet Idle mode, GPRS attached with support of GERAN Feature Package 1 indicated in MS Radio Access Capabilities, and PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
42.4.5.9.4.2 Void
42.4.5.9.4.3 Test procedure
The MS is triggered to initiate packet uplink transfer. SS assigns resources to the MS and the MS starts to send uplink data that the SS acknowledges. During the uplink transfer, the signal strength of cell A is lowered to – 80 dBm. The MS enters CCN mode and sends PACKET CELL CHANGE NOTIFICATION. The MS then continues to send uplink data.
SS sends a Packet Measurement Order providing the MS with NC2 parameters. MS starts sending Packet Measurement Reports. SS then sends a complete set of PACKET NEIGHBOUR CELL DATA with SI1, SI3 and SI13 of Cell B to the MS. SS then sends a PACKET CELL CHANGE ORDER that orders the MS to change to Cell B.
The MS requests resources for an uplink transfer in Cell B and continues the uplink transfer. The MS then requests the remaining SI messages by sending PACKET SI STATUS(Note: During the acquisition of BCCH information the MS may send up to three extra PACKET SI STATUS messages). SS verifies that the MS indicates that it has received the SI sent in PACKET NEIGHBOUR CELL DATA. SS sends the missing SI to the MS in PACKET SERVING CELL DATA messages during the uplink transfer.
To ensure that the MS has received the requested SI, Cell A is deactivated and Cell C is activated with signal strength set to – 60 dBm. The signal strength of cell B is lowered to – 80 dBm. The MS enters CCN mode and sends PACKET CELL CHANGE NOTIFICATION. The SS then sends PACKET CELL CHANGE ORDER and the MS changes to Cell C. The MS requests resources for an uplink transfer in the new cell and re-establishes and completes the uplink transfer in the new cell.
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
{uplink dynamic allocation one phase access} or {uplink dynamic allocation two phase access} |
n = 10000 octets. USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
2 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS. |
3 |
MS -> SS |
RLC DATA BLOCK |
|
4 |
SS -> MS |
PACKET UPLINK ACK/NACK |
|
5 |
SS |
Lower signal strength of Cell A to –80 dBm. |
|
6 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS. |
7 |
MS -> SS |
RLC DATA BLOCK Or PACKET CELL CHANGE NOTIFICATION |
|
8 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS. |
9 |
Steps 7 and 8 are repeated until a PACKET CELL CHANGE NOTIFICATION is received in step 7, but no longer than 15 sec. |
||
The test has failed if no PACKET CELL CHANGE NOTIFICATION is received in Cell A within 15 sec from Step 5. |
|||
10 |
SS->MS |
PACKET MEASUREMENT ORDER |
-Sent on PACCH. -Contains NETWORK_CONTROL_ORDER and NC_REPORTING_PERIOD_T See specific message contents |
11 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS. |
12 |
MS -> SS |
RLC data block OR PACKET MEASUREMENT REPORT |
MS sends data Or PACKET MEASUREMENT REPORT – Sent on PACCH. – Contains the "NC measurement report struct" on PACCH |
13 |
Repeat steps 11 to 12 during T3158+2s |
||
14 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS. |
15 |
MS -> SS |
RLC data block or PACKET MEASUREMENT REPORT |
MS sends data or a PACKET MEASUREMENT REPORT |
16 |
SS -> MS |
PACKET NEIGHBOUR CELL DATA |
See specific message contents |
17 |
Step 14 to 16 are repeated until all instances of PACKET NEIGHBOUR CELL DATA are sent. |
||
18 |
SS -> MS |
PACKET CELL CHANGE ORDER |
See specific message contents |
The following messages are to be sent and received in Cell B. |
|||
19 |
{uplink dynamic allocation one phase access} or {uplink dynamic allocation two phase access} |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
20 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS. |
21 |
MS -> SS |
RLC DATA BLOCK Or PACKET SI STATUS Or PACKET RESOURCE REQUEST |
|
Step 22 is performed only if a PACKET RESOURCE REQUEST is received in Step 21. |
|||
22 |
SS -> MS |
PACKET UPLINK ASSIGNMENT |
Repeats the PDTCH assignment given in Step 19. Send PACKET DOWNLINK DUMMY CONTROL BLOCK with USF assigned to the MS and continue with step 21. |
23 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
24 |
Steps 21 to 23 are repeated until both a PACKET SI STATUS and an RLC Data Block are received in step 21. The Packet SI Status shall be sent within 10 sec of accessing the cell. Verify that the MS not requests SI that was sent in step 16. Note: During the acquisition of BCCH information the MS may send up to three extra PACKET SI STATUS messages. If the RLC DATA BLOCK with BSN = 0 received in Step 21 contains an empty LLC PDU as the first LLC PDU, Steps 21 to 23 are further repeated until a PACKET RESOURCE REQUEST is received in Step 21. NOTE: The empty LLC PDU may be accompanied by another low priority RLC data block (with Packet Resource Request and Packet Uplink Assignment or Packet Timeslot Reconfigure as required), in order to ensure that the radio resources are used efficiently. |
||
25 |
SS -> MS |
PACKET SERVING CELL DATA |
See specific message contents |
26 |
Step 25 is repeated until all instances of PACKET SERVING CELL DATA are sent. |
||
27 |
SS |
Cell A is deactivated and Cell C is activated and set to –60 dBm. |
|
28 |
SS |
Lower signal strength of Cell B to –80 dBm. |
|
29 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS. |
30 |
MS -> SS |
RLC DATA BLOCK Or PACKET CELL CHANGE NOTIFICATION Or PACKET SI STATUS |
|
31 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS. |
32 |
Steps 30 and 31 are repeated until a PACKET CELL CHANGE NOTIFICATION is received in step 30, but no longer than 15 sec. |
||
The test has failed if no PACKET CELL CHANGE NOTIFICATION is received in Cell B within 15 sec from Step 28. |
|||
33 |
SS -> MS |
PACKET CELL CHANGE ORDER |
See specific message contents |
The following messages are to be sent and received in Cell C. |
|||
34 |
{uplink dynamic allocation one phase access} or {uplink dynamic allocation two phase access} |
USF_GRANULARITY = 1 block, RLC_DATA_BLOCKS_GRANTED = open-end TLLI_BLOCK_CHANNEL_CODING: same as channel coding CHANNEL_CODING_COMMAND: cs-1 No starting time present. |
|
35 |
SS -> MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
36 |
MS -> SS |
RLC DATA BLOCK Or PACKET RESOURCE REQUEST |
|
Step 37 is performed only if a PACKET RESOURCE REQUEST is received in Step 36. |
|||
37 |
SS -> MS |
PACKET UPLINK ASSIGNMENT |
Repeats the PDTCH assignment given in Step 34. Send PACKET DOWNLINK DUMMY CONTROL BLOCK with USF assigned to the MS and continue with step 36.. |
38 |
SS -> MS |
PACKET UPLINK ACK/NACK |
USF assigned to the MS |
39 |
If the RLC DATA BLOCK with BSN = 0 received in Step 36 contains an empty LLC PDU as the first LLC PDU, Steps 36 to 38 are repeated until a PACKET RESOURCE REQUEST is received in Step 36. NOTE: The empty LLC PDU may be accompanied by another low priority RLC data block (with Packet Resource Request and Packet Uplink Assignment or Packet Timeslot Reconfigure as required), in order to ensure that the radio resources are used efficiently. |
||
40 |
Completion of {Uplink dynamic allocation} |
Specific message contents
PACKET MEASUREMENT ORDER in step 10:
NC Measurement parameters |
|
NETWORK_CONTROL_ORDER |
10 (NC2) |
NC_REPORTING_PERIOD_T |
000 (0,48 s) |
0 | 1 < EXT Measurement Parameters > |
0 |
Null | 0 | 1 |
1 Additions in R98 |
Null | 0 | 1 |
0 LSA Parameters not included |
Null | 0 | 1 |
1 Additions in R99 |
< ENH Measurement parameters > |
|
{ 0 < BA_IND : bit > < 3G_BA_IND : bit > | 1 < PSI3_CHANGE_MARK : bit(2) > } |
000 |
< PMO_IND : bit > |
0 |
< REPORT_TYPE : bit > |
1 |
< REPORTING_RATE : bit > |
0 |
< INVALID_BSIC_REPORTING : bit > |
0 |
0 | 1< 3G Neighbour Cell Description > |
0 (not present) |
0 | 1 < GPRS REP PRIORITY Description > |
0 (not present) |
0 | 1 < GPRS MEASUREMENT Parameters Description > |
0 (not present) |
0 | 1 < GPRS 3G MEASUREMENT Parameters Description > |
0 (not present) |
Null | 0 | 1 |
1 Additions in Rel-4 |
< CCN_ACTIVE : bit (1) > |
1 |
0 | 1 < CCN Support Description > |
0 |
< padding bits > |
PACKET NEIGHBOUR CELL DATA in Step 16:
The message contains the default SI1, SI3 and SI13 for Cell B.
Information element |
Value/remark |
< PAGE_MODE : bit (2) > |
00 (Normal Paging) |
< GLOBAL_TFI : Global TFI IE > |
0 <5 bit Uplink TFI> |
< CONTAINER_ID : bit (2) > |
01 for SI belonging to Cell B |
< SPARE :bit(1)> |
0 |
< CONTAINER INDEX :bit (5)> |
00000 to the index needed to send all SI messages |
0 | 1 |
0 No ARFCN or BSIC |
Container repetition struct |
|
< PD : bit(3)> |
000, BCCH (LAPDm) |
PACKET CELL CHANGE ORDER in Step 18
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 |
0 |
< IMMEDIATE_REL > |
1 (Immediate abort of operation in the old cell is required) |
< ARFCN > |
ARFCN of Cell B |
< BSIC > |
BSIC of Cell B |
< NETWORK_CONTROL_ORDER : bit(2) > |
00 (NC0) |
0 | 1 |
0 |
0 | 1 < NC_FREQUENCY_LIST > |
0 |
Null | 0 | 1 |
1 Additions in R98 |
Null | 0 | 1 |
0 LSA Parameters not included |
Null | 0 | 1 |
1 Additions in R99 |
< ENH Measurement parameters > |
|
{ 0 < BA_IND : bit > < 3G_BA_IND : bit > | 1 < PSI3_CHANGE_MARK : bit(2) > } |
000 |
< PMO_IND : bit > |
0 |
< REPORT_TYPE : bit > |
1 |
< REPORTING_RATE : bit > |
0 |
< INVALID_BSIC_REPORTING : bit > |
0 |
0 | 1< 3G Neighbour Cell Description > |
0 (not present) |
0 | 1 < GPRS REP PRIORITY Description > |
0 (not present) |
0 | 1 < GPRS MEASUREMENT Parameters Description > |
0 (not present) |
0 | 1 < GPRS 3G MEASUREMENT Parameters Description > |
0 (not present) |
Null | 0 | 1 |
1 Additions in Rel-4 |
< CCN_ACTIVE : bit (1) > |
1 |
0 | 1 < CONTAINER_ID : bit (2) > |
1 |
CONTAINER_ID : bit (2) |
01(The same as Packet Neighbour Cell Data in step 16) |
0 | 1 < CCN Support Description > |
0 |
< padding bits > |
PACKET SERVING CELL DATA in Step 25
The message contains the default SI2, SI2bis (when indicated in SI2) and SI4 for Cell B.
Information element |
Value/remark |
< MESSAGE_TYPE : bit (6) > |
001101 |
< PAGE_MODE : bit (2) > |
00 (Normal Paging) |
0 < GLOBAL_TFI : Global TFI IE > |
0 <5 bit Uplink TFI> |
< spare : bit (4) > |
0000 |
< CONTAINER INDEX :bit (5)> |
00000 to the index needed to send all SI messages |
Container repetition struct |
|
< PD : bit(3)> |
000, BCCH (LAPDm) |
Note: the System Information provides with the Cell C description.
PACKET CELL CHANGE ORDER in Step 33
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 |
0 |
< IMMEDIATE_REL > |
1 (Immediate abort of operation in the old cell is required) |
< ARFCN > |
ARFCN of Cell C |
< BSIC > |
BSIC of Cell C |
< NETWORK_CONTROL_ORDER : bit(2) > |
00 (NC0) |
0 | 1 |
0 |
0 | 1 < NC_FREQUENCY_LIST > |
0 |
Null | 0 | 1 |
1 Additions in R98 |
Null | 0 | 1 |
0 LSA Parameters not included |
Null | 0 | 1 |
1 Additions in R99 |
< ENH Measurement parameters > |
|
{ 0 < BA_IND : bit > < 3G_BA_IND : bit > | 1 < PSI3_CHANGE_MARK : bit(2) > } |
000 |
< PMO_IND : bit > |
0 |
< REPORT_TYPE : bit > |
1 |
< REPORTING_RATE : bit > |
0 |
< INVALID_BSIC_REPORTING : bit > |
0 |
0 | 1< 3G Neighbour Cell Description > |
0 (not present) |
0 | 1 < GPRS REP PRIORITY Description > |
0 (not present) |
0 | 1 < GPRS MEASUREMENT Parameters Description > |
0 (not present) |
0 | 1 < GPRS 3G MEASUREMENT Parameters Description > |
0 (not present) |
Null | 0 | 1 |
1 Additions in Rel-4 |
< CCN_ACTIVE : bit (1) > |
1 |
0 | 1 < CONTAINER_ID : bit (2) > |
0 |
0 | 1 < CCN Support Description > |
0 |
< padding bits > |