42.4.4 Cell Change Order Procedures without PBCCH
3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS
42.4.4.1 Network Controlled Cell Reselection – Packet Measurement Order Procedure
42.4.4.1.1 Conformance requirement
A cell re-selection command may be sent from the network to an MS. When the MS receives the command, it shall immediately re-select the cell according to the included cell description and change the network control mode according to the command.
Reference:
3GPP TS 04.60 subclause 8.4.0.
3GPP TS 05.08 subclause 10.1.4.2.
42.4.4.1.2 Test purpose
To verify that when the Network initiates the Packet Measurement Order Procedure, the MS correctly interprets the Packet Measurement Order Message, changes the network control mode and acts accordingly.
42.4.4.1.3 Method of test
Initial conditions
Parameter |
Carrier1 |
Carrier2 |
Carrier3 |
RF Signal Level (dBm) |
-70 |
-80 |
-50 |
GPRS_RXLEV_ACCE SS_MIN |
-100 |
-100 |
-100 |
NETWORK_CONTRO L_ORDER |
NC2 |
NC2 |
NC2 |
C1 |
30 |
20 |
50 |
C2 |
30 |
20 |
50 |
System simulator:
3 cells, GPRS supported, PBCCH not present (Carrier 1 & 2 is active. Carrier 3 is off).
Mobile Station:
MS is GPRS attached on carrier 1 (with Ready timer value unit set to ‘111’ in the ATTACH ACCEPT message, thus the MS is always in Ready state).
Specific PICS Statements
–
PIXIT Statements
–
Test Procedure
The SS establishes single block down link TBF and then initiates the Packet Measurement Order Procedure on carrier 1 with the Packet Measurement Order (PMO) changing NC2 to NC0. The MS shall reselect to carrier 3 and initiate channel request procedure.
The SS shall accept PACKET MEASUREMENT REPORT from the MS anytime during GPRS attach procedure
Expected Sequence
Step |
Direction |
Message |
Comments |
---|---|---|---|
1 |
SS |
Activate carrier 3 |
|
2 (optional step) |
MS->SS |
CHANNEL REQUEST |
ACCESS TYPE =’Single block without TBF establishment.’ Received on RACH carrier 1. |
3(optional step) |
SS->MS |
IMMEDIATE ASSIGNMENT |
Sent on AGCH, assigning a single block carrier 1. |
4(optional step) |
MS ->SS |
PACKET MEASUREMENT REPORT |
Received on the allocated PDCH. |
5 |
SS->MS |
IMMEDIATE ASSIGNMENT |
SS establishes a single block down link TBF on carrier 1. |
6 |
SS->MS |
PACKET MEASUREMENT ORDER |
Sent on PACCH of carrier 1. PMO message contains Network Control Order 0 |
7 |
MS->SS |
CHANNEL REQUEST |
Verify MS sends channel request on carrier 3 within 30 s of step 6. |
8 |
SS->MS |
IMMEDIATE ASSIGNMENT REJECT. |
Network sends immediate assignment reject on carrier 3. |
42.4.4.2 Network Controlled Cell Reselection/validity of reselection parameters/MS enters standby state
42.4.4.2.1 Conformance requirement
A set of measurement reporting parameters (NETWORK_CONTROL_ORDER and NC_REPORTING_PERIOD(s)) is broadcast on PBCCH. The parameters may also be sent individually to an MS on PCCCH or PACCH, in which case it overrides the broadcast parameters. The individual parameters are valid until the RESET command is sent to MS., there is a downlink signalling failure or the MS enters Standby State.
Reference:
3GPP TS 05.08 subclause 10.1.4.
42.4.4.2.2 Test purpose
To verify that the measurement reporting parameters are valid till the MS enters the standby state.
42.4.4.2.3 Method of test
Initial conditions
Parameter |
Carrier1 |
Carrier2 |
RF Signal Level (dBm) |
-80 |
-70 |
GPRS_RXLEV_ACCE SS_MIN |
-100 |
-100 |
NETWORK_CONTRO L_ORDER |
NC0 |
NC2 |
C1 |
20 |
30 |
C32 |
20 |
30 |
System simulator:
2 cells (cell A, cell B), GPRS supported, PBCCH not present (Carrier 1 is active. Carrier 2 is off)
Mobile Station:
MS is off.
Specific PICS Statements
–
PIXIT Statements
–
Test Procedure
The SS establishes single block down link TBF and then initiates the Packet Measurement Order Procedure on carrier 1 with the Packet Measurement Order (PMO) changing NC0 to NC2. The SS activates carrier 2 with higher RF signal strength than carrier 1. After the Ready Timer expires in the mobile, the MS shall reselect carrier 2 as NC2 is not applicable in standby mode.
Expected Sequence
Step |
Direction |
Message |
Comments |
---|---|---|---|
1 |
MS |
The MS is powered up or switched on and initiates an attach. |
|
2 |
MS -> SS |
ATTACH REQUEST |
|
3 |
SS -> MS |
ATTACH ACCEPT |
Ready timer set to 60 s. Mobile identity = P-TMSI-1 P-TMSI-1 signature |
4 |
MS->SS |
ATTACH COMPLETE |
Apply the new Ready Timer value. |
5 |
SS->MS |
IMMEDIATE ASSIGNMENT |
SS establishes a single block downlink assignment procedure on carrier 1. |
6 |
SS->MS |
PACKET MEASUREMENT ORDER |
Sent on PACCH of carrier 1 PMO message contains Network Control Order 2 |
7 |
SS |
Activate carrier 2 |
|
8 |
SS |
Wait for 30 s |
|
9 |
SS->MS |
PAGING REQUEST TYPE 1 |
MS paged continuously on carrier 2 |
10 |
SS |
Verify no response from MS on carrier 2 for 25 seconds. |
|
11 |
SS |
Wait for 36 s |
|
12 |
SS-> MS |
PAGING REQUEST TYPE 1 |
MS paged on carrier 2 |
13 |
MS -> SS |
CHANNEL REQUEST |
Verify MS has camped on carrier 2 |
Specific message contents
PACKET MEASUREMENT ORDER in step 6:
NC Measurement parameters |
|
NETWORK_CONTROL_ORDER |
10 (NC2) |
NC_REPORTING_PERIOD_I |
111 (61.44 sec) |
NC_REPORTING_PERIOD_T |
010 (1.92 sec) |
NC_FREQUENCY_LIST |
0 (not present) |
42.4.4.3 Network Control measurement reporting / Idle mode / Returning to Broadcast parameters
42.4.4.3.1 Conformance requirement
The procedure for NC measurement report sending shall be initiated by the mobile station at the expiry of the NC measurement report interval timer T3158. At expiry of the timer T3158 the mobile station shall restart the timer T3158, perform the measurements and send the PACKET MEASUREMENT REPORT message containing the ‘NC measurement report struct’ on PACCH.
A set of measurement reporting parameters (NETWORK_CONTROL_ORDER and NC_REPORTING_PERIOD(s)) is broadcast on PBCCH. The parameters may also be sent individually to an MS on PCCCH or PACCH, in which case it overrides the broadcast parameters. The individual parameters are valid until the RESET command is sent to the MS or there is a downlink signalling failure or the MS goes to the Standby state.
Reference
3GPP TS 04.60, subclauses 8.1.2.2, 8.3 and 5.6.1.
3GPP TS 05.08, subclause 10.1.4
42.4.4.3.2 Test Purpose
To verify that individual parameters are valid only until the MS goes to Stand-by State. MS returns to broadcast parameters once it enters the Stand-by State and uses the broadcast parameters if it again goes to ready state.
42.4.4.3.3 Method of test
Initial conditions
System Simulator:
1 cell, GPRS supported.
Mobile Station:
MS is GPRS attached with a P-TMSI allocated, SPLIT PG CYCLE negotiated
PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
SS assigns a single block downlink TBF to MS and sends PACKET MEASUREMENT ORDER changing the NC mode from NC0 to NC2. SS then receives PACKET MEASUREMENT REPORTS until the READY TIMER expires. SS then waits for 30 sec and checks that the MS is not sending any more PACKET MEASUREMENT REPORTs. SS pages the MS to bring the MS into ready state and receives the page response by giving the uplink TBF. SS then assigns a downlink TBF and checks that the MS is not sending any PACKET MEASUREMENT REPORTs.
Maximum duration of the test
–
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
SS -> MS |
IMMEDIATE ASSIGNMENT |
SS establishes a single block downlink TBF. |
2 |
SS -> MS |
PACKET MEASUREMENT ORDER |
Sent on the blocks assigned in step 1. PMO message contains Network Control Order 2 (See the specific message content) |
3 |
MS -> SS |
CHANNEL REQUEST |
With establishment cause ‘single block access’. After the second execution of the step: SS verifies that CHANNEL REQUEST arrives after NC_REPORTING_PERIOD_I from last measurement report. |
4 |
SS -> MS |
IMMEDIATE ASSIGNMENT |
Single block assignment with an arbitrarily chosen TBF starting time in the future in the range 0.5 to 1seconds. |
5 |
MS -> SS |
PACKET MEASUREMENT REPORT |
Received on the assigned block. |
6 |
SS |
Steps 3-5 are repeated until the expiry of READY TIMER. |
|
7 |
SS |
SS waits for 30 sec, checks that the MS is not sending any more measurement reports. |
|
8 |
SS -> MS |
PAGING REQUEST TYPE 1 |
Page info contains P-TMSI of the MS. Sent on PCH. |
9 |
MS->SS |
CHANNEL REQUEST |
Establishment cause = "One phase access". Received on RACH. |
10 |
SS -> MS |
IMMEDIATE ASSIGNMENT |
Random Reference = pertaining to the message received in step 9. Dynamic allocation for RLC data blocks, Sent on AGCH. |
11 |
SS->MS |
PACKET DOWNLINK DUMMY CONTROL BLOCK |
USF assigned to the MS |
12 |
MS -> SS |
UPLINK RLC DATA BLOCK |
LLC PDU implicitly indicating paging response, containing TLLI in the RLC/MAC header. Received on uplink PDTCH assigned in step 10. |
13 |
SS -> MS |
PACKET UPLINK ACK/NACK |
Acknowledge the received RLC data block, with FAI=1, Containing contention resolution TLLI. Sent on uplink PACCH. Valid RRBP. |
14 |
MS ->SS |
PACKET CONTROL ACKNOWLEDGEMENT |
Received on uplink PACCH. |
SS initiates a data transfer of 1000 octets. |
|||
15 |
SS -> MS |
IMMEDIATE ASSIGNMENT |
Sent on PCH. Downlink Assignment, TLLI value as received. Sent on PCH. |
16 |
MS ->SS |
Completion of macro {Downlink data transfer} |
SS completes downlink transfer of 1000 octets of data. SS checks that the MS has not sent any PACKET MEASUREMENT REPORT during the TBF. |
Specific message contents
PACKET MEASUREMENT ORDER in step 2:
NC Measurement parameters |
|
NETWORK_CONTROL_ORDER |
10 (NC2) |
NC_REPORTING_PERIOD_I |
100 (7.68 s) |
NC_REPORTING_PERIOD_T |
000 (0.48 s) |
42.4.4.4 Void
42.4.4.5 Network Control measurement reporting / Idle mode / Reselection due to RA failure
-
-
-
-
- Conformance Requirement
-
-
-
Having made M + 1 attempts to send a PACKET CHANNEL REQUEST (respectively EGPRS PACKET CHANNEL REQUEST) message, the mobile station shall stop timer T3186 and start timer T3170. At expiry of timer T3170, the packet access procedure shall be aborted, a random access failure shall be indicated to upper layer and the mobile station shall perform autonomous cell re-selection according to 3GPP TS 43.022.
The MS shall only perform autonomous cell re-selection when the reselection is triggered by a downlink signalling failure as defined in subclause 6.5 or a random access failure as defined in 3GPP TS 44.018 and 3GPP TS 44.060.
Reference
3GPP TS 44.060, subclause 3.5.2.1.2.
3GPP TS 45.008, subclause 10.1.4
42.4.4.5.2 Test Purpose
To verify that while in NC2, MS performs autonomous cell reselection when the reselection is triggered by the random access failure.
42.4.4.5.3 Method of test
Initial conditions
System Simulator:
2 cell, GPRS supported.
Parameter |
Carrier1 |
Carrier2 |
RF Signal Level (dBm) |
-60 |
-70 |
NETWORK_CONTROL_ORDER |
NC2 |
NC2 |
NC_REPORTING_PERIOD_I |
Default |
Default |
Mobile Station:
MS is GPRS attached with a P-TMSI allocated, SPLIT PG CYCLE negotiated. Ready timer is set to 5 min.
PDP context 2 established.
Specific PICS Statements
–
PIXIT Statements
–
Test procedure
MS is in packet idle mode on carrier 1. MS sends a CHANNEL REQUEST for sending the measurement report. SS assigns resources for it. MS sends a PACKET MEASUREMENT REPORT. MS is triggered to send uplink data. MS sends (MAX_RETRANS+ 1) CHANNEL REQUESTs. SS does not respond to it. SS checks that after sending M + 1 channel requests MS does reselection and reselects to carrier 2.
Maximum duration of the test
Expected sequence
Step |
Direction |
Message |
Comments |
1 |
SS -> MS |
IMMEDIATE ASSIGNMENT |
SS establishes a single block downlink TBF. |
2 |
SS -> MS |
PACKET MEASUREMENT ORDER |
Sent on the blocks assigned in step 1. PMO message contains Network Control Order 2 (See the specific message content) |
3 |
MS->SS |
CHANNEL REQUEST |
With establishment cause ‘single block access’. |
4 |
SS->MS |
IMMEDIATE ASSIGNMENT |
Sent on AGCH, assigning a single block. |
5 |
MS ->SS |
PACKET MEASUREMENT REPORT |
Received on the allocated PDCH. The SS verifies that the measurement results for cells A, B are included in it. |
6 |
Steps 3-5 repeated once again. |
||
7 |
SS |
SS Checks that the measurements of cell A and B are included in the PACKET MEASUREMENT REPORT. |
|
8 |
MS |
MS is triggered to send 1000 octets of uplink data. |
|
9 |
MS -> SS |
CHANNEL REQUEST |
With establishment cause ‘one phase access’ or ‘two phase access’ |
10 |
MS ->SS |
CHANNEL REQUEST |
With establishment cause ‘one phase access’ or ‘two phase access’ |
11 |
SS |
MS sends M+1 CHANNEL REQUESTS but SS does not respond to it. |
|
12 |
MS -> SS |
CHANNEL REQUEST |
Received on cell B. |
Specific message contents
PACKET MEASUREMENT ORDER in step 2:
NC Measurement parameters |
|
NETWORK_CONTROL_ORDER |
10 (NC2) |
NC_REPORTING_PERIOD_I |
110 (30.72 s) |
NC_REPORTING_PERIOD_T |
000 (0.48 s) |