47 Dual Transfer Mode
3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS
The default cell configuration for section 47 for the system simulator is the “PBCCH not present” case unless stated explicitly in the test case initial conditions.
To bring the MS into active state U10, macro 40.4.3.22 shall be used.
47.1 Reallocation of CS resources
47.1.1 Reallocation of CS resources / Assignment Command
47.1.1.1 Conformance requirements
While in dual transfer mode an inter-frequency change of channel can be performed through the dedicated channel assignment procedure.
Upon receipt of the ASSIGNMENT COMMAND message, the MS shall abandon the packet resource immediately, enter dedicated mode and then initiate a local end release of link layer connections and disconnects the physical channels. The MS then commands the switching to the assigned channels and initiates the establishment of lower layer connections.
After the main signalling link is successfully established, the MS returns an ASSIGNMENT COMPLETE message, specifying cause "normal event", to the network on the main DCCH.
The sending of this message on the MS side and its receipt on the network side allow the resumption of the transmission of signalling layer messages other than those belonging to RR management which include the Packet Assignment signalling to re-establish DTM.
References
3GPP TS 04.18 / 44.018, sub-clause 3.4.3
47.1.1.2 Test purpose
To verify that the channel assignment procedure can completely modify the physical channel configuration of the MS within the current frequency band and that the MS can re-establish successfully the PS resources.
47.1.1.3 Method of test
Initial Conditions
System Simulator:
1 cell, Cell A, with both TCH of cell activated and DTM supported.
Mobile Station:
The MS is in the active state (U10) of a call, on cell A, with a TMSI and P-TMSI allocated and the PDP context 2 activated but no allocated TBFs.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
Once the MS is in DTM, the SS attempts to modify the resources of the MS. The MS is allocated a timeslot, in the same frequency band, on the current cell. The re-allocation of the MS resources is realised by the MS receiving an ASSIGNMENT COMMAND message from the SS. The ASSIGNMENT COMMAND message instructs the switching of the MS to the newly assigned channel and initiates the establishment of lower layer connections. The establishment of the lower layer connections includes the activation of the channels, the connection to the channels and the establishment of the main signalling link. Once the CS connection is established, the MS should return an ASSIGNMENT COMPLETE message on the new main signalling link. The SS then sends the PACKET ASSIGNMENT message to the MS over the main signalling link to establish the packet resources and the MS enters DTM.
MS supporting DTM shall complete test for k=1and MSs indicating support of single slot DTM shall additionally complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1, 2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, on Timeslot N (chosen arbitrarily), utilising default TCH of cell and either: k=1, Channel Type = TCH/F; or k=2, Channel Type = TCH/H. |
|
2 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents |
3 |
SS<->MS |
{ Acknowledged downlink data } |
Macro – Transmitting 10,000 octets of Data |
4 |
SS->MS |
ASSIGNMENT COMMAND |
This message to be sent before the termination of the macro. Allocating resources on Timeslot N’ (chosen arbitrarily) utilising the first alternative TCH of Cell A and either: k=1, Channel Type = TCH/F; or k=2, Channel Type = TCH/H. |
5 |
MS->SS |
ASSIGNMENT COMPLETE |
Sent on the correct channel after establishment of the main signalling link. |
6 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents |
7 |
SS<->MS |
{ Downlink Data Transfer } |
Macro – Completion of the 10,000 octets of Data. |
Specific Message Contents
PACKET ASSIGNMENT (Step 2):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
PACKET ASSIGNMENT (Step 6):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N’ 1) MOD 8 |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N’ |
47.1.2 Reallocation of CS resources / Handover Command
47.1.2.1 Conformance requirements
While in dual transfer mode an intra-cell change of channel can be performed, when requested by the network, through the handover procedure.
Upon receipt of the HANDOVER COMMAND message, the MS shall immediately abandon the packet resources entering dedicated mode. Once the packet resources have been released the MS initiates the release of link layer connections and disconnects the physical channels. The MS then commands the switching to the assigned channels and initiates the establishment of lower layer connections.
After the main signalling link is successfully established, the MS returns a HANDOVER COMPLETE message to the network on the main DCCH, then the TBFs can be re-established using the Packet Assignment procedure.
References
3GPP TS 04.18/44.018, sub-clauses 3.4.4.1, 3.4.4.3 & 3.4.23
47.1.2.2 Test purpose
To verify that when the MS changes the CS resources to a different timeslot in the same frequency band using the Handover procedure, the MS successfully re-establishes the CS and PS resources.
47.1.2.3 Method of test
Initial Conditions
System Simulator:
1 cell, DTM supported.
Mobile Station:
The MS is in the active state (U10) of a call, on cell A, with a TMSI and P-TMSI allocated and the PDP context 1 activated but no allocated TBFs.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
Once the MS is in DTM, the SS attempts to modify the resources of the MS by allocating a different timeslot, in the same frequency band, on the current cell. The re-allocation of the MS resources is realised by the MS receiving a HANDOVER COMMAND message from the SS. The HANDOVER COMMAND message instructs the switching of the MS to the newly assigned channel and the establishment of lower layer connections. Once the CS connection is established, the MS should return a HANDOVER COMPLETE message on the new main signalling link. Once the MS has successfully completed the handover procedure to the cell, the SS sends the DTM INFORMATION message, informing the MS of the cell parameters. The PACKET ASSIGNMENT message is then sent to the MS over the main signalling link to establish the packet resources and the MS re-enters DTM.
MS supporting DTM shall complete test for k=1 and MSs indicating support of single slot DTM shall additionally complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, on Timeslot N (chosen arbitrarily), utilising either: k=1, Channel Type = TCH/F; or k=2, Channel Type = TCH/H. |
|
2 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents |
3 |
SS<->MS |
{ Acknowledged downlink data } |
Macro – Transmitting 10kB of Data |
4 |
SS->MS |
HANDOVER COMMAND |
This message to be sent before the termination of the macro. Timeslot (N + 4) MOD 8 and either: k=1, Channel Type = TCH/F; or k=2, Channel Type = TCH/H. |
5 |
MS->SS |
HANDOVER COMPLETE |
Sent on the new channel after establishment of the main signalling link |
6 |
SS->MS |
DTM INFORMATION |
Contains the cell parameters |
7 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents |
8 |
SS<->MS |
{ Downlink Data Transfer } |
Macro – Completion of the 10kB of Data. |
Specific Message Contents
PACKET ASSIGNMENT (Step 2):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
PACKET ASSIGNMENT (Step 7):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
((N + 4) 1) MOD 8 |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N + 4) MOD 8 |
47.1.3 Intra frequency reallocation of CS resources / DTM Assignment Command
47.1.3.1 Conformance requirements
In dual transfer mode an intracell change of channel can be requested by upper layers for changing the channel type, or decided by the RR sublayer, e.g. for an internal handover or for the reallocation of all the resources of the mobile station. The purpose is to modify completely the physical channel configuration of the mobile station without frequency redefinition or change in synchronization while staying in the same cell.
Upon receipt of the DTM ASSIGNMENT COMMAND message, the mobile station initiates a local end release of link layer connections, disconnects the physical channels, commands the switching to the assigned channel and initiates the establishment of lower layer connection (this includes the activation of the channel, their connection and the establishment of the main signalling link).
NOTE: This conformance requirement was taken from Rel-5 specifications, but it is also a requirement on R99 and Rel-4 MS.
References
3GPP TS 44.018, sub-clause 3.4.23.2
47.1.3.2 Test purpose
To verify that the MS can reallocate both the CS connection and PS resources to different timeslot(s) within the same frequency band, having received the DTM ASSIGNMENT COMMAND message.
47.1.3.3 Method of test
Initial Conditions
System Simulator:
1 cell, DTM supported.
Mobile Station:
The MS is in the active state (U10) of a call.
The MS is in GMM Ready state with a P-TMSI allocated and the PDP context 1 activated.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
Once the MS is in DTM, the SS attempts to modify the resources of the MS. The SS allocates the MS a different timeslot configuration, in the same frequency band, on the current cell. The re-allocation of the MS resources is realised by the MS receiving a DTM ASSIGNMENT COMMAND from the SS. On receipt of the DTM ASSIGNMENT COMMAND message, the MS initiates a local end release of link layer connections, disconnects the physical channels. After the MS has switched to the assigned channel, the MS initiates the establishment of lower layer connection, the activation of the channel and the establishment of the main signalling link. The MS returns an ASSIGNMENT COMPLETE message on the new signalling link.
MS supporting DTM shall complete testing for k=1, and indicating support of single slot DTM shall complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, on Timeslot N (chosen arbitrarily), utilising a default TCH of cell and either: k=1, Channel Type = TCH/F; or k=2, Channel Type = TCH/H. |
|
2 |
SS->MS |
PACKET ASSIGNMENT |
Assigning downlink resources on Timeslot N+1. |
3 |
SS<->MS |
{ Downlink data transfer } |
Macro – Transmitting 2.000 octets of Data |
4 |
SS->MS |
DTM ASSIGNMENT COMMAND |
This message is sent after approximately 1.000 octets have been successfully transmitted. See specific message contents. |
5 |
MS->SS |
ASSIGNMENT COMPLETE |
|
6 |
SS<->MS |
{ Downlink data transfer } |
Macro – Completion of the 2.000 octet transmission. |
7 |
SS |
Verify that the CS connection is still through connected on the new Timeslot. |
Specific Message Contents
DTM ASSIGNMENT COMMAND (Step 4):
k=1:
As default message contents except: |
|
Description of the CS Channel |
|
– Timeslot number |
(N + 4) MOD 8 |
– Channel Type |
TCH/F |
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
((N + 4) 1)MOD 8 |
k=2:
As default message contents except: |
|
Description of the CS Channel |
|
– Timeslot number |
(N + 4) mod 8 |
– Channel Type |
TCH/H |
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N + 4) MOD 8 |
47.1.4 Inter frequency reallocation of CS resources / DTM Assignment Command
47.1.4.1 Conformance requirements
In dual transfer mode an intracell change of channel can be requested by upper layers for changing the channel type, or decided by the RR sublayer, e.g. for an internal handover or for the reallocation of all the resources of the mobile station. The purpose is to modify completely the physical channel configuration of the mobile station without frequency redefinition or change in synchronization while staying in the same cell.
Upon receipt of the DTM ASSIGNMENT COMMAND message, the mobile station initiates a local end release of link layer connections, disconnects the physical channels, commands the switching to the assigned channel and initiates the establishment of lower layer connection (this includes the activation of the channel, their connection and the establishment of the main signalling link).
NOTE: This conformance requirement was taken from Rel-5 specifications, but it is also a requirement on R’99 and Rel-4 MS.
References
3GPP TS 44.018, sub-clause 3.4.23.2
47.1.4.2 Test purpose
To verify that the MS, can reallocate both the CS connection and PS resources to a different frequency band, having received the DTM ASSIGNMENT COMMAND message while in DTM.
47.1.4.3 Method of test
Initial Conditions
System Simulator:
1 cell, Cell A, with both TCH of cell activated and DTM supported. TCH2 allocated in a different frequency band and added to the Cell Channel Description in SI1.
Mobile Station:
The MS is in the active state (U10) of a call, on cell A, with a TMSI and P-TMSI allocated and the PDP context 1 activated but no allocated TBFs.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
Once the MS is in DTM, the SS attempts to modify the resources of the MS. The MS is allocated a new timeslot, in a different frequency band. The re-allocation of the MS resources is realised by the MS receiving a DTM ASSIGNMENT COMMAND from the SS. On receipt of the DTM ASSIGNMENT COMMAND message, the MS initiates a local end release of link layer connections and disconnects the physical channels. After the MS has switched to the assigned channel, the MS initiates the establishment of lower layer connection, the activation of the channel and the establishment of the main signalling link. The MS returns an ASSIGNMENT COMPLETE message on the new signalling link and continues transmitting on the uplink TBF.
MS supporting DTM shall complete testing for k=1 MSs indicating support of single slot DTM shall complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, on Timeslot N (chosen arbitrarily), utilising either: k=1, Channel Type = TCH/F; or k=2, Channel Type = TCH/H. |
|
2 |
MS |
Trigger the MS to initiate an uplink packet transfer containing 2 000 octets. |
|
3 |
MS->SS |
DTM REQUEST |
|
4 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
5 |
SS<->MS |
{ Uplink data } |
Macro – Transmitting 2 000 octets of data. |
6 |
SS->MS |
DTM ASSIGNMENT COMMAND |
This message to be sent before the termination of the macro. The SS instructs the MS to utilise the first alternative TCH of Cell A in a different Band supported by the MS and see specific message contents for other changes to default message. |
7 |
MS->SS |
ASSIGNMENT COMPLETE |
|
8 |
SS<->MS |
{ Uplink data transfer } |
Macro – completion of 2 000 octets of data upload. |
9 |
SS |
Verify that the CS connection is still through connected on the new Timeslot. |
Specific Message Contents
PACKET ASSIGNMENT (Step 4):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
RR Packet Downlink Assignment IE |
Not included |
DTM ASSIGNMENT COMMAND (Step 6):
As default message contents except: |
|
Description of the CS Channel |
|
– Timeslot number |
N |
– Channel Type |
TCH/F |
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
For GSM 850 and PCS 1900 only:
SYSTEM INFORMATION TYPE 1:
As default message contents except: |
|
SI 1 Rest Octets |
|
– Band Indicator |
H (ARFCN indicates 1900 band) |
SYSTEM INFORMATION TYPE 6:
As default message contents except: |
|
SI 6 Rest Octets |
|
– Band Indicator |
H (ARFCN indicates 1900 band) |
47.2 Release of CS resources
47.2.1 Mobile originating CS release
41.2.1.1 Conformance requirements
If the MS is operating in DTM when the RR connection release is requested by the MS, the radio resources allocated on a PDCH are released, the MS returns to the PCCCH or CCCH configuration, packet idle mode. The MS aborts the RR connection by initiating a normal release of the main signalling link, performing local end releases on all other signalling links, disconnecting all traffic channels and aborts all the packet resources.
References
3GPP TS 04.18/44.018, sub-clauses 3.4.13.1 and 3.4.13.3
47.2.1.2 Test purpose
To verify that after the MS releases the CS connection, the PS resources are correctly re-established.
47.2.1.3 Method of test
Initial Conditions
System Simulator:
1 cell, DTM supported.
Mobile Station:
The MS is in the active state (U10) of a call.
The MS is GPRS attached with a P-TMSI allocated and the PDP context 1 activated.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
The MS is in dedicated mode when it is triggered to initiate uplink data transfer. The MS sends a DTM REQUEST message to the SS requesting uplink resources. The SS assigns the required resources and waits until approximately half the uplink data has been passed to the SS before triggering the MS to release the CS resources. The MS initiates the signalling required to release the channel by sending a DISCONNECT message. Once the resources have been cleared the MS requests the establishment of an uplink TBF and completes the data transmission.
MS supporting DTM shall complete testing for k=1and MSs indicating support of single slot DTM shall additionally complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
1 |
SS |
MS in the active state (U10) of a call on Timeslot N. When: k=1, Channel Type=TCH/F; k=2, Channel Type=TCH/H. |
|
2 |
MS |
Trigger the MS to initiate an uplink packet transfer containing 10k octets. |
|
3 |
MS->SS |
DTM REQUEST |
|
4 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
5 |
MS<->SS |
{ Uplink data } |
Macro |
6 |
MS |
The MS is triggered to initiate the release of the CS connection when approximately 5k octets have been received. |
|
7 |
MS->SS |
DISCONNECT |
|
8 |
SS->MS |
RELEASE |
|
9 |
MS->SS |
RELEASE COMPLETE |
|
10 |
SS->MS |
CHANNEL RELEASE |
|
11 |
MS<->SS |
{ Uplink dynamic allocation two phase access } |
Macro |
12 |
MS<->SS |
{ Completion of uplink RLC data block transfer } |
Macro – Completion of the 10k octet transmission. |
Specific Message Contents
PACKET ASSIGNMENT (Step 4):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
RR Packet Downlink Assignment IE |
Not included |
47.3 Handover
47.3.1 Handover to same routeing area
47.3.1.1 Handover to same routeing area whilst in dedicated mode & MM Ready / Completed on the main DCCH
47.3.1.1.1 Conformance requirements
3GPP TS 04.18, sub-clause 3.4.26:
While in dedicated mode, upper layers in the mobile station or in the network may request the transport of GPRS information transparently over the radio interface. This procedure is only applicable when:
– the information from upper layers is signalling information; and
– the GTTP length of the message is below the maximum indicated by the network.
In any other case, the RR procedures related to packet resource establishment while in dedicated mode apply.
The information from upper layers shall be carried inside the GTTP Information message. The GTTP Information message contains:
– the TLLI of the MS; and
– the LLC PDU.
The GTTP messages are sent using "normal" priority at the data link layer.
3GPP TS 23.060, sub-clause 6.9.1.1
A cell update takes place when the MS enters a new cell inside the current RA and the MS is in READY state. If the RA has changed, a routeing area update is executed instead of a cell update.
References
3GPP TS 04.18, sub-clause 3.4.26
3GPP TS 23.060, sub-clause 6.9.1.1
3GPP TS 04.64 / 44.064, sub-clause 6.4.1.7.
47.3.1.1.2 Test purpose
To verify that when the network completes the CS handover of the MS to a different cell, the MS sends a cell update on the main DCCH in the new cell.
47.3.1.1.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B both in the same Location Area and Routing Area. Both cells shall be activated. Cell A shall be the strongest.
Mobile Station:
The MS is in GMM Ready state with a P-TMSI allocated. The value of the Ready Timer is chosen such that the MS is in the Ready State when handed to the new cell.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
The MS is camped on cell A in packet idle mode
The MS is brought to dedicated mode. A HANDOVER COMMAND message instructs the switching of the MS to the newly assigned channel and the establishment of lower layer connections. Once the CS connection is established, the MS should return a HANDOVER COMPLETE message on the new main signalling link. The MS shall then send the GPRS INFORMATION message on the main DCCH including an empty LLC frame to indicate Cell Update.
Maximum Duration of Test
5 minutes
Expected Sequence
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in the active state (U10) of a call on Timeslot N. When: Channel Type=TCH/F; |
|
3 |
SS->MS |
HANDOVER COMMAND |
Instructs the MS to do handover to Cell B |
4 |
MS->SS |
HANDOVER ACCESS |
Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of PHYSICAL INFORMATION. Handover Reference as included in the HANDOVER COMMAND. |
5 |
SS-MS |
PHYSICAL INFORMATION |
|
6 |
MS->SS |
HANDOVER COMPLETE |
|
7 |
SS->MS |
DTM INFORMATION |
|
8 |
MS->SS |
GPRS INFORMATION |
The MS sends an empty LLC frame to indicate Cell Update. |
Specific Message Contents
HANDOVER COMMAND (Step 3):
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N (chosen arbitrarily) |
– Channel Type |
TCH/F |
Cell Description |
Default values from Cell B |
Synchronization Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
47.3.1.2 Handover to same routeing area whilst in DTM with downlink TBF Established
47.3.1.2.1 Conformance requirements
The handover procedure includes the:
– abortion of the downlink packet resources;
– disconnection and the deactivation of previously assigned channels and their release (layer 1);
– activation of the new channels, and their connection if applicable;
– triggering of the establishment of data link connection for SAPI = 0 on the new channels.
References
3GPP TS 04.18 / 44.018, sub-clause 3.4.4.
47.3.1.2.2 Test purpose
To verify that the downlink packet resources can be successfully aborted, then re-established in the new cell after the handover of CS resources.
47.3.1.2.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B with same LAI, default parameters and both support DTM.
Mobile Station:
The MS is in the active state (U10) of a call on Timeslot N (chosen arbitrarily) of cell A.
The MS is in GMM Ready state with a P-TMSI allocated and the PDP context 2 activated. The value of the Ready Timer is chosen such that the MS is in the Ready State when handed to the new cell.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
After the MS is in DTM with an active downlink TBF, the SS initiates the Handover procedure. Once the MS has successfully completed the handover procedure to the new cell, the SS sends the DTM INFORMATION message, informing the MS of new cell parameters. The MS performs the Cell Update procedure using an empty LLC PDU on the main DCCH. The MS shall then accept the establishment of a downlink TBF, initiated by the SS with a PACKET ASSIGNMENT message.
MS supporting DTM shall complete test for k=1 and MSs indicating support of single slot DTM shall additionally complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in active state (U10) of a call and when: k=1, Channel Type = TCH/F; k=2, Channel Type = TCH/H. |
|
2 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
3 |
SS<->MS |
{ Acknowledged downlink data } |
Macro – Transmitting 10kB of Data |
4 |
SS->MS |
HANDOVER COMMAND |
This message to be sent before the termination of the macro. See specific message contents. |
5 |
MS->SS |
HANDOVER ACCESS |
Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of PHYSICAL INFORMATION. Handover Reference as included in the HANDOVER COMMAND. |
6 |
SS->MS |
PHYSICAL INFORMATION |
|
7 |
MS->SS |
HANDOVER COMPLETE |
|
8 |
SS->MS |
DTM INFORMATION |
|
9 |
MS->SS |
GPRS INFORMATION |
The MS sends an empty LLC frame to indicate Cell Update. |
10 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
11 |
SS<->MS |
{ Acknowledged downlink data } |
Macro – Completion of the 10kB of Data. |
Specific Message Contents
PACKET ASSIGNMENT (Step 2):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
HANDOVER COMMAND (Step 4):
k=1:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N (chosen arbitrarily) |
– Channel Type |
TCH/F |
Cell Description |
Default values from Cell B |
Synchronization Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
k=2:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N’ (chosen arbitrarily) |
– Channel Type |
TCH/H |
Cell Description |
Default values from Cell B |
Synchronization Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
PACKET ASSIGNMENT (Step 10):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N’ 1) MOD 8 |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N’ |
47.3.1.3 Handover to same routeing area whilst in DTM with both DL & UL TBFs
47.3.1.3.1 Handover to same routeing area whilst in DTM with both DL & UL TBFs / Successful case
47.3.1.3.1.1 Conformance requirements
The handover procedure includes:
– the abortion of the downlink and uplink packet resources;
– the disconnection and the deactivation of previously assigned channels and their release (layer 1);
– the activation of the new channels, and their connection if applicable;
– the triggering of the establishment of data link connection for SAPI = 0 on the new channels.
Then if DTM is supported in the new cell, the downlink and uplink TBF should be re-established if still required.
References
3GPP TS 04.18/44.018, sub-clause 3.4.4
47.3.1.3.1.2 Test purpose
To verify that when no errors occur in the CS handover to a different cell in the same routeing area, the MS shall successfully re-establish the CS connection and the downlink and uplink PS resources.
47.3.1.3.1.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B with same LAI, DTM supported, default parameters.
Mobile Station:
The MS is in the active state (U10) of a call on Timeslot N (chosen arbitrarily) of cell A and has the PDP context 1 activated.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
After the MS is in DTM with both uplink and downlink TBFs active, the SS initiates the Handover procedure. Once the MS has successfully completed the handover procedure to the new cell, the SS sends the DTM INFORMATION message, informing the MS of new cell parameters. The MS may perform the Cell Update procedure by sending a GPRS INFORMATION message containing an empty LLC PDU on the main DCCH. The MS shall then request the establishment of an uplink TBF with the DTM Request message and the SS assigns an uplink TBF.
The MS supporting DTM shall complete testing k=1 and MSs indicating support of single slot DTM shall additionally complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in active state (U10) of a call and when: k=1, Channel Type = TCH/F; k=2, Channel Type = TCH/H. |
|
2 |
MS |
Trigger the MS to initiate an uplink packet transfer containing 2kB of data. |
|
3 |
MS->SS |
DTM REQUEST |
|
4 |
SS->MS |
PACKET ASSIGNMENT |
When: k=1, Timeslot = (N 1) MOD 8; k=2, Timeslot = N |
5 |
SS<->MS |
{ Uplink data transfer } |
Macro |
6 |
SS->MS |
PACKET DOWNLINK ASSIGNMENT |
This message to be sent before the termination of the macro. When: k=1, Timeslot = (N 1) MOD 8; k=2, Timeslot =N. |
7 |
SS->MS |
RLC DOWNLINK DATA |
S/P Bit =1 |
8 |
MS->SS |
PACKET DOWNLINK ACK/NACK |
|
9 |
SS->MS |
HANDOVER COMMAND |
See specific message contents. |
10 |
MS->SS |
HANDOVER ACCESS |
Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of PHYSICAL INFORMATION. Handover Reference as included in the HANDOVER COMMAND. |
11 |
SS->MS |
PHYSICAL INFORMATION |
|
12 |
MS->SS |
HANDOVER COMPLETE |
|
13 |
SS->MS |
DTM INFORMATION |
|
14 (optional step) |
MS->SS |
GPRS INFORMATION |
Sent on main DCCH. Contains an empty LLC PDU for Cell Update. |
15 |
MS->SS |
DTM REQUEST |
Sent on main DCCH. |
16 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
Step 17 may be performed only if Step 14 has not been performed. |
|||
17 (optional step) |
MS->SS |
LLC PDU |
Sent on PDCH. Empty LLC PDU for Cell Update NOTE: The empty LLC PDU may be followed by one or more lower priority LLC PDUs in the same RLC Data Block. |
18 (conditional step) |
MS->SS |
PACKET RESOURCE REQUEST |
Sent on PDCH. (Step is performed if Empty LLC PDU received in step 17) |
19 (conditional step) |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. (Step is performed if in step 18 PACKET RESOURCE REQUEST was received) |
20 |
SS<->MS |
{ Uplink data transfer } |
Macro – Completion of the 2kB of Data. |
Specific Message Contents
HANDOVER COMMAND (Step 8):
k=1:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N (chosen arbitrarily) |
Cell Description |
Default values from Cell B |
Synchronization Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
k=2:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N (chosen arbitrarily) |
– Channel Type |
TCH/H |
Cell Description |
Default values from Cell B |
Synchronization Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
PACKET ASSIGNMENT (Step 16):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
RR Packet Downlink Assignment IE |
Not included |
47.3.1.3.2 Handover to same routeing area whilst in DTM with both DL & UL TBFs / Abnormal case / Handover Failure
47.3.1.3.2.1 Conformance requirements
If a lower layer failure happens on the new channel before the HANDOVER COMPLETE message has been sent, the MS deactivates the new channels, reactivates the old channels, reconnects the TCHs if any and triggers the establishment of the main signalling link. It then sends a HANDOVER FAILURE message on the main signalling link and resumes normal operation as if no handover attempt had occurred.
References
3GPP TS 04.18/44.018, sub-clause 3.4.4.4
47.3.1.3.2.2 Test purpose
To verify that if an error occurs when attempting handover to a different cell, the MS shall abort all CS operations in the new cell and successfully attempt to re-establish CS and uplink PS resources in the old cell.
47.3.1.3.2.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B, DTM supported, default parameters.
Mobile Station:
The MS is in the active state (U10) of a call on Timeslot N (chosen arbitrarily) of cell A and has the PDP context 1 activated.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
After the MS is in DTM with both uplink and downlink TBFs active, the SS initiates the Handover procedure. If the SS does not accept the MS on the new channel, the MS shall revert back to the original channel in the old cell. The MS shall then send a HANDOVER FAILURE message on the main DCCH in the old cell. The MS then shall request the establishment of an uplink TBF with the Packet Request procedure and the SS assigns an uplink TBF followed by a downlink TBF.
The MS supporting DTM shall complete testing k=1 and MSs indicating support of single slot DTM shall additionally complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in active state (U10) of a call and when: k=1, Channel Type = TCH/F; k=2, Channel Type = TCH/H. |
|
2 |
MS |
Trigger the MS to initiate an uplink packet transfer containing 2kB of data. |
|
3 |
MS->SS |
DTM REQUEST |
|
4 |
SS->MS |
PACKET ASSIGNMENT |
When: k=1, Timeslot = T = (N 1) MOD 8; k=2, Timeslot =N. |
5 |
SS<->MS |
{ Uplink data } |
Macro – Transmitting 2kB of data. |
6 |
SS->MS |
PACKET DOWNLINK ASSIGNMENT |
This message to be sent before the termination of the macro. When: k=1, Timeslot = T; k=2, Timeslot = N. |
7 |
SS->MS |
RLC DOWNLINK DATA |
S/P bit = 1 |
8 |
MS->SS |
PACKET DOWNLINK ACK/NACK |
|
9 |
SS->MS |
HANDOVER COMMAND |
See specific message contents. |
10 |
MS->SS |
HANDOVER ACCESS |
Handover Reference as included in the HANDOVER COMMAND. Message repeated multiple times. Sent on Cell B. |
11 |
MS->SS |
HANDOVER FAILURE |
Sent on Cell A. |
12 Optional step |
MS->SS |
GPRS INFORMATION |
The MS sends an empty LLC PDU to indicate Cell Update. |
13 |
MS->SS |
DTM REQUEST |
|
14 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
15 |
SS<->MS |
{ Uplink data transfer } |
Macro – Completion of the 2kB of Data. |
Specific Message Contents
HANDOVER COMMAND (Step 9):
k=1:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
(N + 4) MOD 8 (chosen arbitrarily) |
Cell Description |
Default values from Cell B |
Synchronization Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
k=2:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
(N + 4) MOD 8 (chosen arbitrarily) |
– Channel Type |
TCH/H |
Cell Description |
Default values from Cell B |
Synchronization Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
PACKET ASSIGNMENT (Step 14):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
T |
RR Packet Downlink Assignment IE |
Not included |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
RR Packet Downlink Assignment IE |
Not included |
47.3.2 Handover to different routeing area whilst in DM
47.3.2.1 Handover to different routeing area whilst in DM / Performed on main DCCH / RAU complete before CS release
47.3.2.1.1 Conformance requirements
During a CS connection, an MS in class‑B mode of operation (GSM only) cannot perform GPRS attach nor routeing area updates, only MSs in class‑A mode of operation can perform these procedures.
A GPRS MS in MS operation mode A shall perform the normal routing area update procedure during an ongoing circuit-switched transaction.
References
3GPP TS 23.060 sub-clause 6.3.1
3GPP TS 24.008 sub-clause 4.7.5.2.1
47.3.2.1.2 Test purpose
To verify that when the MS completes the CS handover, to a cell in a different routeing area, the MS performs a RA update on the main DCCH.
47.3.2.1.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B with different RAIs and both support DTM.
Mobile Station:
The MS is in the active state (U10) of a call on cell A.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
Once the MS is in an active call on cell A, the MS is instructed to change to a new cell in a different Routeing Area, where the main signalling link is established. After the voice call has been correctly re-established, the MS completes the Routeing Area Updating procedure on the main DCCH. The SS reallocates the P-TMSI of the MS in the ROUTING AREA UPDATE ACCEPT message, prompting the MS to acknowledge this change with the ROUTING AREA UPDATE COMPLETE message.
Maximum Duration of Test
5 minutes
Expected Sequence
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, on an arbitrarily chosen timeslot of cell A. |
|
2 |
SS->MS |
HANDOVER COMMAND |
Instructs the MS to move to an arbitrarily chosen timeslot on cell B. |
3 |
MS->SS |
HANDOVER ACCESS |
Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of the PHYSICAL INFORMATION message. Handover reference as included in the HANDOVER COMMAND. |
4 |
SS->MS |
PHYSICAL INFORMATION |
|
5 |
MS->SS |
HANDOVER COMPLETE |
Sent on the new channel after the establishment of the main signalling link. |
6 |
SS->MS |
DTM INFORMATION |
|
7 |
MS->SS |
GPRS INFORMATION |
Contains the ROUTING AREA UPDATE REQUEST message. |
8 |
SS->MS |
GPRS INFORMATION |
Contains the ROUTING AREA UPDATE ACCEPT message. Allocates a new P-TMSI, (C2345678Hex). |
9 |
MS->SS |
GPRS INFORMATION |
Contains the ROUTING AREA UPDATE COMPLETE message. See specific message contents. |
Specific message contents
ROUTING AREA UPDATE ACCEPT (Step 8):
Information Element |
Value/remark |
As default message contents except: |
|
– Allocated P-TMSI |
|
– Type of Identity |
P-TMSI |
– P-TMSI value |
C2345678Hex |
47.3.2.2 Handover to different routeing area whilst in DM / Performed on main DCCH / CS release before RAU complete
47.3.2.2.1 Conformance requirements
During a CS connection, an MS in class‑B mode of operation (GSM only) cannot perform GPRS attach nor routeing area updates, only MSs in class‑A mode of operation can perform these procedures.
A GPRS MS in MS operation mode A shall perform the normal routing area update procedure during an ongoing circuit-switched transaction.
References
3GPP TS 23.060 sub-clause 6.3.1
3GPP TS 24.008 sub-clause 4.7.5.2.1
47.3.2.2.2 Test purpose
To verify that when the MS completes the CS handover, to a cell in a different routeing area, the MS attempts to complete the RA update on the main DCCH, but the CS resources are released and the RA update procedure is completed on new TBFs.
47.3.2.2.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B operating in NW Mode II with same LAI but different RAI and both support DTM. SI13 is broadcasted in such a way that it is received by the MS at least every 4 sec.
Mobile Station:
The MS is in the active state (U10) of a call on cell A.
The MS is in GMM Ready state with a P-TMSI allocated.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
Once the MS is in an active call on cell A, the MS is then instructed to change to a new cell in a different Routeing Area, where the main signalling link is established. After the voice call has been correctly re-established the MS initiates the Routeing Area Updating procedure on the main DCCH. When the SS has successfully received the ROUTING AREA UPDATE REQUEST message, the SS releases the DCCH with a CHANNEL RELEASE command. The SS then establishes a downlink TBF to allow the ROUTING AREA UPDATE ACCEPT message to be sent to the MS. The MS responds to the ROUTING AREA UPDATE ACCEPT message, acknowledging the new P-TMSI allocated, by sending a ROUTING AREA UPDATE COMPLETE message.
Maximum Duration of Test
5 minutes
Expected Sequence
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, on an arbitrarily chosen timeslot of cell A. The RF level of cell A is lowered until cell B is preferred by the SS. |
|
2 |
SS->MS |
HANDOVER COMMAND |
Instructs the MS to move to an arbitrarily chosen timeslot on cell B. |
3 |
MS->SS |
HANDOVER ACCESS |
Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of the PHYSICAL INFORMATION message. Handover reference as included in the HANDOVER COMMAND. |
4 |
SS->MS |
PHYSICAL INFORMATION |
|
5 |
MS->SS |
HANDOVER COMPLETE |
Sent on the new channel after the establishment of the main signalling link. |
6 |
SS->MS |
DTM INFORMATION |
Sent on main DCCH. |
7 |
MS->SS |
GPRS INFORMATION |
Contains the ROUTING AREA UPDATE REQUEST message |
All RAU REQUEST LAPDm frames shall be acknowledged by the SS. |
|||
8 |
SS->MS |
CHANNEL RELEASE |
|
9 |
The SS waits at least two SI13 repeat periods. |
||
10 |
SS |
A downlink TBF is then established to allow the RAU ACCEPT message to be returned to the MS. |
|
11 |
SS->MS |
ROUTING AREA UPDATE ACCEPT |
Allocating the MS a new P-TMSI (C2345678Hex). |
12 |
MS->SS |
ROUTING AREA UPDATE COMPLETE |
See specific message contents. |
Specific message contents
ROUTING AREA UPDATE ACCEPT (Step 11):
Information Element |
Value/remark |
As default message contents except: |
|
– Allocated P-TMSI |
|
– Type of Identity |
P-TMSI |
– P-TMSI value |
C2345678Hex |
47.3.3 Handover to different routeing area whilst in DTM
47.3.3.1 Handover to different routeing area whilst in DTM / Performed on TBFs
47.3.3.1.1 Handover to different routeing area whilst in DTM / Performed on TBFs / RAU complete before CS release
47.3.3.1.1.1 Conformance requirements
In dedicated mode or dual transfer mode, an intercell or an intracell change of channel can be requested by the network RR sublayer. This change may be performed through the handover procedure.
Upon receipt of the HANDOVER COMMAND message, the mobile station initiates, the release of link layer connections, disconnects the physical channels (including the packet resources, if in class A mode of operation), commands the switching to the assigned channels and initiates the establishment of lower layer connections (this includes the activation of the channels, their connection and the establishment of the data links).
In, GSM, user data transmission in the MS shall be suspended during the routing area updating procedure; user data reception shall be possible.
References
3GPP TS 04.18/44.018 sub-clause 3.4.4
3GPP TS 24.008 sub-clause 4.7.5
47.3.3.1.1.2 Test purpose
To verify that a MS in DTM can complete Handover to a cell in a different routeing area, where the RA update procedure is performed on TBFs, before the CS resources are released.
47.3.3.1.1.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B with same LAI but different RAI, both supporting DTM and with default parameters.
Mobile Station:
The MS is in the active state (U10) of a call, on Timeslot N (chosen arbitrarily) of cell A, with a TMSI and P-TMSI allocated and the PDP context 1 activated but no allocated TBFs.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
A MS in dedicated mode with an active CS call is triggered to establish an uplink TBF. The MS sends a DTM REQUEST message appealing for uplink resources. Upon receiving the DTM request message the SS allocates uplink resources. Once the MS has entered DTM and has had at least ten RLC data blocks acknowledged, the SS sends a HANDOVER COMMAND message to the MS and completes the Handover procedure to a cell in the new RA. The Handover procedure is complete by the MS sending a HANDOVER COMPLETE message to the SS. Once the Handover procedure is complete the SS sends the MS a DTM INFORMATION message, providing the MS with the minimum information required to establish packet resources with the cell. The MS having received the DTM INFORMATION message indicating DTM support in the current cell, initiates the RA Update procedure. The RAU procedure is initiated by sending the ROUTING AREA UPDATE REQUEST message, encapsulated in GTTP, on the main DCCH. The SS completes the RA Update procedure by returning a ROUTING AREA UPDATE ACCEPT message on the main DCCH without re-allocating the P-TMSI. The MS can then again initiate the establishment of an uplink TBF.
MS supporting DTM shall complete test for k=1and MSs indicating support of single slot DTM shall additionally complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in active state (U10) of a call and when: k=1, Channel Type = TCH/F; k=2, Channel Type = TCH/H. |
|
2 |
MS |
Trigger the MS to initiate an uplink packet transfer containing 2kB of data. |
|
3 |
MS->SS |
DTM REQUEST |
|
4 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
5 |
SS<->MS |
{Uplink Data} |
Macro – Transmitting approximately 1kBof Data. |
6 |
SS->MS |
HANDOVER COMMAND |
See specific message contents. |
7 |
MS->SS |
HANDOVER ACCESS |
Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of PHYSICAL INFORMATION. Handover Reference as included in the HANDOVER COMMAND. |
8 |
SS->MS |
PHYSICAL INFORMATION |
Sent after reception of n HANDOVER ACCESS messages. See specific message contents. |
9 |
MS->SS |
HANDOVER COMPLETE |
|
10 |
SS->MS |
DTM INFORMATION |
|
11 |
MS->SS |
GPRS INFORMATION |
It shall contain a ROUTING AREA UPDATE REQUEST message |
12 |
SS->MS |
GPRS INFORMATION |
It contains a ROUTING AREA UPDATE ACCEPT message. Does not allocate MS a new P-TMSI. |
13 |
MS->SS |
DTM REQUEST |
|
14 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
15 |
SS<->MS |
{ Uplink data transfer } |
Macro – Completion of the 2kB of Data. |
Specific Message Contents
PACKET ASSIGNMENT (Step 4):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
RR Packet Downlink Assignment IE |
Not included |
HANDOVER COMMAND (Step 6):
k=1:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N’ (chosen arbitrarily) |
– Channel Type |
TCH/F |
Synchronisation Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
k=2:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N’ (chosen arbitrarily) |
– Channel Type |
TCH/H |
Synchronisation Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
PACKET ASSIGNMENT (Step 14):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N’ 1) MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N’ |
RR Packet Downlink Assignment IE |
Not included |
47.3.3.1.2 Handover to different routeing area whilst in DTM / Performed on TBFs / CS release before RAU complete
47.3.3.1.2.1 Conformance requirements
In dedicated mode or dual transfer mode, an intercell or an intracell change of channel can be requested by the network RR sublayer. This change may be performed through the handover procedure.
Upon receipt of the HANDOVER COMMAND message, the mobile station initiates, the release of link layer connections, disconnects the physical channels (including the packet resources, if in class A mode of operation), commands the switching to the assigned channels and initiates the establishment of lower layer connections (this includes the activation of the channels, their connection and the establishment of the data links).
In, GSM, user data transmission in the MS shall be suspended during the routing area updating procedure; user data reception shall be possible.
References
3GPP TS 04.18/44.018 sub-clause 3.4.4
3GPP TS 24.008 sub-clause 4.7.5
47.3.3.1.2.2 Test purpose
To verify that a MS in DTM can complete the Handover procedure to a cell in a different routeing area, where the RA update is performed on TBFs, but the CS resources are released before the completion of the update. The MS then has to complete the update on new TBFs.
47.3.3.1.2.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B operating in NW Mode II with same LAI but different RAI, both supporting DTM, with default parameters. SI13 is broadcasted in such a way that it is received by the MS at least every 4 sec.
Mobile Station:
The MS is in the active state (U10) of a call, on Timeslot N of cell A, with a TMSI and P-TMSI allocated and the PDP context 1 activated but no allocated TBFs.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
A MS in dedicated mode with an active CS call is triggered to establish an uplink TBF. The MS sends a DTM REQUEST message appealing for uplink resources. Upon receiving the DTM request message the SS allocates uplink resources. Once the MS has entered DTM and has had at least ten RLC data blocks acknowledged, the SS sends a HANDOVER COMMAND message to the MS and completes the Handover procedure to a cell in a new RA. The Handover procedure is completed by the MS sending a HANDOVER COMPLETE message to the SS. Once the Handover procedure is complete the SS sends the MS a DTM INFORMATION message, providing the MS with the minimum information required to establish packet resources with the cell. The MS having received the DTM INFORMATION message indicating DTM support in the current cell, initiates the RA Update procedure. The RA Update procedure is initiated by the MS sending the ROUTING AREA UPDATE REQUEST message, encapsulated in GTTP, on the main DCCH. The SS then releases the CS connection to the MS and allocates downlink PS resources to the MS with an PACKET DOWNLINK ASSIGNMENT message. The SS then completes the RAU procedure by sending the RAU ACCEPT message to the MS, allowing the MS to request uplink PS resources.
MS supporting DTM shall complete test for k=1 and MSs indicating support of single slot DTM shall additionally complete testing for k=2.
Maximum Duration of Test
5 minutes
Expected Sequence
The test sequence is repeated for k = 1,2.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in active state (U10) of a call and when: k=1, Channel Type = TCH/F; k=2, Channel Type = TCH/H. |
|
2 |
MS |
Trigger the MS to initiate an uplink packet transfer containing 2kB of data. |
|
3 |
MS->SS |
DTM REQUEST |
|
4 |
SS->MS |
PACKET ASSIGNMENT |
See specific message contents. |
5 |
SS<->MS |
{ Uplink data transfer } |
Macro – Transmitting 2kB of Data |
6 |
SS->MS |
HANDOVER COMMAND |
This message to be sent before the termination of the macro. See specific message contents. |
7 |
MS->SS |
HANDOVER ACCESS |
Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of PHYSICAL INFORMATION. Handover Reference as included in the HANDOVER COMMAND. |
8 |
SS->MS |
PHYSICAL INFORMATION |
Sent after reception of n HANDOVER ACCESS messages. See specific message contents. |
9 |
MS->SS |
HANDOVER COMPLETE |
|
10 |
SS->MS |
DTM INFORMATION |
|
11 |
MS->SS |
GPRS INFORMATION |
It shall contain a ROUTING AREA UPDATE REQUEST message. |
All RAU REQUEST LAPDm frames shall be acknowledged by the SS. |
|||
12 |
SS->MS |
CHANNEL RELEASE |
The TCH is released. |
13 |
The SS waits at least two SI13 repeat periods. |
||
14 |
A downlink TBF is then established to allow the RAU ACCEPT message to be returned the MS. |
||
15 |
SS->MS |
ROUTING AREA UPDATE ACCEPT |
Does not allocate MS a new P-TMSI. |
16 |
{ Uplink dynamic allocation two phase access } |
Macro |
|
17 |
SS<->MS |
{ Uplink data transfer } |
Macro – Completion of the 2kB of Data. |
Specific Message Contents
PACKET ASSIGNMENT (Step 4):
k=1:
Information Element |
Value/remark |
As default message contents except: |
|
GPRS Broadcast Information IE |
|
– GPRS Cell Options IE |
|
– NMO |
01 (Network Mode of Operation II) |
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N 1) MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
k=2:
Information Element |
Value/remark |
As default message contents except: |
|
GPRS Broadcast Information IE |
|
– GPRS Cell Options IE |
|
– NMO |
01 (Network Mode of Operation II) |
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N |
RR Packet Downlink Assignment IE |
Not included |
HANDOVER COMMAND (Step 6):
k=1:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N’ (chosen arbitrarily) |
– Channel Type |
TCH/F |
Synchronisation Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
k=2:
Information Element |
Value/remark |
As default message contents, except: |
|
Channel Description |
|
– Timeslot Number |
N’ (chosen arbitrarily) |
– Channel Type |
TCH/H |
Synchronisation Indication |
|
– Report Observed Time Difference |
Shall not be included. |
– Synchronization Indication |
"Non synchronized". |
– Normal Cell Indication |
Ignore out of range timing advance. |
47.3.4 Handover to UTRAN while in DTM
47.3.4.1 Handover to UTRAN while in DTM / Downlink TBF
47.3.4.1.1 Conformance requirements
Once the mobile station enters the dual transfer mode, the existent procedures apply (see 3GPP TS 44.060). Some exceptions to the existent procedures while in dedicated mode are:
– When the mobile station receives a HANDOVER COMMAND, HANDOVER TO UTRAN COMMAND, HANDOVER TO CDMA2000 COMMAND, HANDOVER TO IU MODE COMMAND or ASSIGNMENT COMMAND message, it shall abandon the packet resource immediately, enter dedicated mode and perform the handover or assignment procedure, respectively.
After the successful completion of the handover from an GSM cell to an UMTS cell, an MS which has performed the GPRS suspension procedure in Gb mode (see 3GPP TS 04.18) (i.e. an MS in MS operation mode B or an DTM MS in a GSM cell that does not support DTM) shall perform a normal RA update procedure in the UMTS cell in order to resume the GPRS services in the network, before sending any other signalling messages or user data.
References
3GPP TS 04.18/44.018 sub-clause 3.4.23.1
3GPP TS 24.008 sub-clause 4.7.1.7
47.3.4.1.2 Test purpose
Verifying that the MS aborts Packet resources while in DTM and proceeds with the handover to UTRAN, upon reception of an INTER SYSTEM TO UTRAN HANDOVER COMMAND message.
47.3.4.1.3 Method of test
Initial Conditions
System Simulator:
2 cells – Cell 1 is GSM with DTM supported, Cell 2 is UTRAN. The present document sub-clause 26.6.5.1 shall be referenced for the default parameters of cell 1. 3GPP TS 34.108, sub-clause 6.1 shall be referenced for default parameters of Cell 2.
Mobile Station:
The MS is in the active state (U10) of a call.
The MS is GPRS idle with a P-TMSI allocated and the PDP context 1 activated
Specific PICS statements
–
PIXIT statements
–
Test Procedure
The SS starts the GSM cell and UTRAN cell and brings the MS into the call active state of Cell 1(CC state U10). The SS sends a PACKET ASSIGNMENT message to the MS on the main DCCH, instructing the MS to switch to the designated timeslot. The SS waits a specified time and then starts to transmit to the newly allocated resources. The SS configures the UTRAN dedicated channel corresponding to the default-configuration 3. After approximately 5k octets of data has been sent, the SS sends a MEASUREMENT INFORMATION to trigger the MS to perform measurements on the UTRAN cell. The SS verifies that the MS include the UTRAN cell in the MEASUREMENT REPORT and then sends INTERSYSTEM TO UTRAN HANDOVER COMMAND message indicating the dedicated channel of the target cell to the MS through the GSM serving cell. After the MS receives the command it shall configure itself accordingly and switch to the dedicated channel of UTRAN cell. The SS checks whether the handover has been performed, by verifying that the MS transmits the HANDOVER TO UTRAN COMPLETE message to the SS through DCCH of the UTRAN cell. The MS then performs the Routing Area Updating procedure, initiated with the transmission of a ROUTING AREA UPDATE REQUEST message. The SS completes the procedure by sending a ROUTING AREA UPDATE COMPLETE message to the MS. The SS establishes a radio bearer to the MS with the RADIO BEARER SETUP and RADIO BEARER SETUP COMPLETE messages. To check that PDP context is active, SS sends MODIFY PDP CONTEXT REQUEST in UMTS cell. The MS may or may not accept the QoS and replies to the SS accordingly.
Maximum Duration of Test
5 minutes
Expected Sequence
Note: Default message contents for UMTS signalling can be found in 3GPP TS 34.108 sub-clause 9.1.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, utilising Timeslot N and TCH/F channel type for the CS connection on Cell 1 (Timeslot chosen arbitrarily) |
|
2 |
SS->MS |
PACKET ASSIGNMENT |
Assigning downlink packet resources on Timeslot N+1 to the MS. |
3 |
MS<->SS |
{ Downlink data transfer } |
Macro |
4 |
SS |
The SS configures the dedicated channel with the configuration: conversational/speech/UL:12.2 DL:12.2 kbps/CS RAB + UL:3.4 DL3.4 kbps SRBs in UTRAN cell. |
|
5 |
SS |
Waits until approximately 5k octets is sent to the MS |
|
6 |
|
MEASUREMENT INFORMATION |
|
7 |
|
MEASUREMENT REPORT |
Including Measurement Results on the UTRAN cell in Step 6. Received within 5 sec + 10% from Step 6. |
8 |
SS->MS |
INTER SYSTEM TO UTRAN HANDOVER COMMAND |
See specific message contents. |
9 |
MS |
The MS accepts the handover command and configures its lower layers using the parameters contained in the INTERSYSTEM TO UTRAN HANDOVER COMMAND |
|
10 |
SS |
The SS waits for uplink physical channel in synchronisation |
|
11 |
MS->SS |
HANDOVER TO UTRAN COMPLETE |
The SS receives this message on DCCH of Cell 2 (UTRAN cell). It implies that the down link physical channel has synchronised with UTRAN. |
12 |
SS |
The SS starts integrity protection for CS domain |
|
13 |
SS->MS |
UTRAN MOBILITY INFORMATION |
The SS conveys CN system information for the PS domain to the UE in connected mode. See specific message contents. |
14 |
MS->SS |
UTRAN MOBILITY_INFORMATION CONFIRM |
|
15 |
MS->SS |
ROUTING AREA UPDATE REQUEST |
|
16 |
SS->MS |
AUTHENTICATION AND CIPHERING REQUEST |
|
17 |
MS->SS |
AUTHENTICATION AND CIPHERING RESPONSE |
|
18 |
SS |
The SS starts integrity protection for PS domain |
|
19 |
SS->MS |
ROUTING AREA UPDATE ACCEPT |
|
20 |
SS->MS |
RADIO BEARER SETUP |
PS RAB establishment |
21 |
MS->SS |
RADIO BEARER SETUP COMPLETE |
|
22 |
SS Releases the CS call. |
||
23 |
SS->MS |
MODIFY PDP CONTEXT REQUEST |
SS requests the modification of a PDP context. |
A24 |
MS->SS |
MODIFY PDP CONTEXT ACCEPT |
MS behaviour type A: Accept the PDP context modification |
B24 |
MS->SS |
DEACTIVATE PDP CONTEXT REQUEST |
MS behaviour type B: Initiate the PDP context deactivation. Cause set to ‘QoS not accepted’ |
B24a |
SS->MS |
DEACTIVATE PDP CONTEXT ACCEPT |
MS behaviour type B: Accept the PDP context deactivation. |
B24b |
MS->SS |
DETACH REQUEST |
MS behaviour type B: A non-auto attach MS may (optionally) send a Detach Request. The SS shall wait up to ‘T3390’ seconds for the Detach Request. |
B24c |
SS->MS |
DETACH ACCEPT |
If the MS transmitted a Detach Request message in step B24b then the SS responds with a Detach Accept message. |
Specific message contents
MEASUREMENT INFORMATION
Information Element |
Value/remark |
< RR short PD : bit > |
0 |
< Message type : bit (5) > |
‘00101’B |
< Short layer 2 header : bit (2) > |
‘00’B |
< BA_IND : bit > |
0 |
< 3G_BA_IND : bit > |
0 |
< MP_CHANGE_MARK : bit > |
0 |
< MI_INDEX : bit (4) > |
‘0000’B |
< MI_COUNT : bit (4) > |
‘0000’B |
< PWRC : bit > |
0 |
< REPORT_TYPE : bit > |
1 (Measurement Reporting shall be used) |
< REPORTING_RATE : bit > |
0 (SACCH rate reporting) |
< INVALID_BSIC_REPORTING : bit > |
0 (Report on cells with invalid BSIC not allowed) |
0 | 1 < Real Time Difference Description > |
0 |
0 | 1 < BSIC Description > |
0 |
0 | 1 < REPORT PRIORITY Description > |
0 |
0 | 1 < MEASUREMENT Parameters Description > |
0 |
0 | 1 < extension length > |
0 |
0 | 1 < 3G Neighbour Cell Description > |
1 |
0 | 1 < 3G_Wait : bit (3) > |
0 |
0 | 1 < Index_Start_3G : bit (7) > |
0 |
0 | 1 < Absolute_Index_Start_EMR : bit (7) > |
0 |
0 | 1 < UTRAN FDD Description > |
1 |
0 | 1 < Bandwidth_FDD : bit (3) > |
0 |
1 < Repeated UTRAN FDD Neighbour Cells > ** 0 |
1 |
0 < FDD-ARFCN : bit (14) > |
0 See TS 34.108, clause 6.1.5, table 6.1.1 |
< FDD_Indic0 : bit > |
0 |
< NR_OF_FDD_CELLS : bit (5) > |
‘00001’B |
< FDD_CELL_INFORMATION Field > |
10 bits Scrambling code according to TS 34.108, clause 6.1.4, Default settings for cell No.1 |
1 < Repeated UTRAN FDD Neighbour Cells > ** 0 |
0 |
0 | 1 < UTRAN TDD Description > |
0 |
0 | 1 < CDMA2000 Description > |
0 |
0 | 1 < 3G MEASUREMENT Parameters Description > |
|
< Qsearch_C : bit (4) > |
‘0111’B (Always) |
< 3G_SEARCH_PRIO: bit (1) > |
1 |
< FDD_REP_QUANT : bit (1) > |
1 (Ec/No) |
0 | 1 < FDD_MULTIRAT_REPORTING : bit (2) > |
‘1 01’B (Report on 1 UTRAN cell) |
0 | 1 < FDD_REPORTING_OFFSET : bit (3) > |
0 |
0 | 1 < TDD_MULTIRAT_REPORTING : bit (2) > |
0 |
0 | 1 < TDD_REPORTING_OFFSET : bit (3) > |
0 |
0 | 1 < CDMA2000_MULTIRAT_REPORTING : bit (2) > |
0 |
0 | 1 < CDMA2000_REPORTING_OFFSET : bit (3) > |
0 |
INTERSYSTEM TO UTRAN HANDOVER COMMAND
Information Element |
Value/remark |
RR management Protocol Discriminator |
‘0110’B |
Skip Indicator |
‘0000’B |
Inter System to UTRAN Handover Command Message Type |
‘01100011’B |
Length of Handover to UTRAN Command contents |
Octet length of the "Handover to UTRAN Command value part" |
Handover to UTRAN Command value part |
PER encoded ASN.1 value of type "HandoverToUTRANCommand-r3-IEs", the content is presented in the next table. |
Content of "HandoverToUTRANCommand-r3-IEs" (in tabular format)
Information Element |
Value/remark |
New U-RNTI |
|
– SRNC Identity |
‘000000000001’B |
– S-RNTI-2 |
Set to arbitrary value corresponding to DPCH Offset value currently stored in SS |
Ciphering algorithm |
The presence of this IE is dependent on IXIT statements in TS 34.123-2. If ciphering is indicated to be active, use UEA1. Else, this IE is omitted |
CHOICE specification mode |
Preconfiguration |
CHOICE preconfiguration mode |
Default configuration |
– Default configuration mode |
FDD |
– Default configuration identity |
3 (12.2 kbps speech + 3.4 kbps signalling) |
– RAB Info |
|
– RAB identity (GSM-MAP) |
‘00000001’B |
– CN domain identity |
CS domain |
– NAS Synchronisation Indicator |
Not Present |
– Uplink DPCH info |
|
– Uplink DPCH power control info |
|
– CHOICE mode |
FDD |
– DPCCH power offset |
-78dB (i.e. ASN.1 IE value of -20 ( 2 + ( IE Value * 4)) ) |
– PC Preamble |
1 frame |
– SRB delay |
7 frames |
– CHOICE mode |
FDD |
– Scrambling code type |
Long |
– Reduced scrambling code number |
0 |
– Spreading factor |
64 |
– Downlink information common for all radio links |
|
– Downlink DPCH info common for all RL |
|
– Downlink DPCH power control information |
|
– CHOICE Mode |
FDD |
– DPC mode |
Single TPC |
– Downlink information per radio link list |
1 |
– Downlink information for each radio link |
|
– CHOICE mode |
FDD |
– Primary CPICH info |
|
– Primary scrambling code |
See TS 34.108, clause titled "Default settings for cell No.1 (FDD)” in clause 6.1 |
– Downlink DPCH info for each radio link |
|
– CHOICE mode |
FDD |
– CHOICE mode |
FDD |
– Primary CPICH usage for channel estimation |
Primary CPICH may be used |
– Secondary scrambling code |
1 |
– CHOICE Spreading factor |
128 |
– Code number |
0 |
– Scrambling code change |
No code change |
– TPC combination index |
0 |
– Frequency info |
|
– UARFCN uplink(Nu) |
Not Present Absence of this IE is equivalent to apply the default duplex distance defined for the operating frequency according to TS 25.101 |
– UARFCN downlink(Nd) |
See TS 34.108, clause 6.1.5, table 6.1.1 |
Maximum allowed UL TX power |
See TS 34.108, clause 6.1.5, table 6.1.1 |
Contents of UTRAN MOBILITY INFORMATION message:
The contents of the UTRAN MOBILITY INFORMATION message in this test case is identical to the default message in TS 34.108, with the following exceptions.
Information Element |
Value/remark |
---|---|
Message Type |
|
Integrity check info |
As default |
RRC transaction identifier |
As default |
Integrity protection mode info |
As default |
Ciphering mode info |
As default |
New U-RNTI |
As default |
New C-RNTI |
As default |
UE Timers and constants in connected mode |
As default |
CN information info |
|
– PLMN identity |
Not present |
– CN common GSM-MAP NAS system information |
Not present |
– CN domain related information |
|
– CN domain identity |
CS domain |
– CN domain specific GSM-MAP NAS system info |
|
– T3212 |
30 (periodic updating every 3 hours) |
– ATT |
1 (MS shall apply IMSI attach and detach procedures) |
– CN domain specific DRX cycle length coefficient |
7 |
– CN domain related information |
|
– CN domain identity |
PS domain |
– CN domain specific GSM-MAP NAS system info |
|
– RAC |
6 (GERAN and UTRAN cells use different RAC) |
– NMO |
0 (Network Mode of Operation I) |
– CN domain specific DRX cycle length coefficient |
7 |
URA identity |
Not present |
Downlink counter synchronization info |
Not Present |
47.3.4.2 Handover to UTRAN while in DTM / Uplink TBF
47.3.4.2.1 Conformance requirements
Once the mobile station enters the dual transfer mode, the existent procedures apply (see 3GPP TS 44.060). Some exceptions to the existent procedures while in dedicated mode are:
– When the mobile station receives a HANDOVER COMMAND, HANDOVER TO UTRAN COMMAND, HANDOVER TO CDMA2000 COMMAND, HANDOVER TO IU MODE COMMAND or ASSIGNMENT COMMAND message, it shall abandon the packet resource immediately, enter dedicated mode and perform the handover or assignment procedure, respectively.
After the successful completion of the handover from an GSM cell to an UMTS cell, an MS which has performed the GPRS suspension procedure in Gb mode (see 3GPP TS 04.18) (i.e. an MS in MS operation mode B or an DTM MS in a GSM cell that does not support DTM) shall perform a normal RA update procedure in the UMTS cell in order to resume the GPRS services in the network, before sending any other signalling messages or user data.
References
3GPP TS 04.18/44.018 sub-clause 3.4.23.1
3GPP TS 24.008 sub-clause 4.7.1.7
47.3.4.2.2 Test purpose
Verifying that the MS aborts Packet resources while in DTM and proceeds with the handover to UTRAN, upon reception of an INTER SYSTEM TO UTRAN HANDOVER COMMAND message.
47.3.4.2.3 Method of test
Initial Conditions
System Simulator:
2 cells – Cell 1 is GSM with DTM supported, Cell 2 is UTRAN. The present document sub-clause 26.6.5.1 shall be referenced for the default parameters of cell 1. 3GPP TS 34.108, sub-clause 6.1 shall be referenced for default parameters of Cell 2.
Mobile Station:
The MS is in the active state (U10) of a call.
The MS is GPRS idle with a P-TMSI allocated and the PDP context 1 activated
Specific PICS statements
–
PIXIT statements
–
Test Procedure
The SS starts the GSM cell and UTRAN and brings the MS into the call active state (CC state U10). The MS is then triggered to initiate packet uplink data transfer in RLC acknowledged mode and sends a DTM REQUEST message. On receipt of the DTM REQUEST message, requesting uplink resources, the SS sends a PACKET ASSIGNMENT message to the MS on the main DCCH, instructing the MS to switch to the designated timeslot. The SS waits a specified time and then starts to transmit to the newly allocated resources. The SS configures the UTRAN dedicated channel corresponding to the default-configuration 3. After approximately 5k octets of data has been sent, sent, the SS sends a MEASUREMENT INFORMATION to trigger the MS to perform measurements on the UTRAN cell. The SS verifies that the MS include the UTRAN cell in the MEASUREMENT REPORT and then sends an INTERSYSTEM TO UTRAN HANDOVER COMMAND message, indicating the dedicated channel of the target cell to the MS, through the GSM serving cell. After the MS receives the command it shall configure itself accordingly and switch to the dedicated channel of UTRAN cell. The SS checks whether the handover has been performed, by verifying that the MS transmits a HANDOVER TO UTRAN COMPLETE message to the SS through the DCCH of the UTRAN cell. The MS then optionally attempt to resume the packet resources with the transmission of a SERVICE REQUEST message. The radio bearer is then established and the SS sends a SERVICE ACCEPT message to the MS instructing the MS to use the bearer for packet transmission. To check that PDP context is active, SS sends MODIFY PDP CONTEXT REQUEST in UMTS cell. The MS may or may not accept the QoS and replies to the SS accordingly.
Maximum Duration of Test
5 minutes
Expected Sequence
Note: Default message contents for UMTS signalling can be found in 3GPP TS 34.108 sub-clause 9.1.
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, utilising Timeslot N and TCH/F channel type for the CS connection on Cell 1 (Timeslot chosen arbitrarily) |
|
2 |
Trigger the MS to initiate an uplink packet transfer containing 10k octets. |
||
3 |
MS->SS |
DTM REQUEST |
|
4 |
SS->MS |
PACKET ASSIGNMENT |
Assigning uplink packet resources on Timeslot N+1 to the MS. |
5 |
MS<->SS |
{ Uplink data transfer } |
Macro |
6 |
SS |
The SS configures the dedicated channel with the configuration: conversational/speech/UL:12.2 DL:12.2 kbps/CS RAB + UL:3.4 DL3.4 kbps SRBs in UTRAN cell. |
|
7 |
SS |
Waits until approximately 5k octets have been successfully transmitted. |
|
8 |
|
MEASUREMENT INFORMATION |
|
9 |
|
MEASUREMENT REPORT |
Including Measurement Results on the UTRAN cell in Step 8 Received within 5 sec + 10% from Step 8. |
10 |
SS->MS |
INTER SYSTEM TO UTRAN HANDOVER COMMAND |
See specific message contents. |
11 |
MS |
The MS accepts the handover command and configures its lower layers using the parameters contained in the INTERSYSTEM TO UTRAN HANDOVER COMMAND |
|
12 |
SS |
The SS waits for uplink physical channel in synchronisation |
|
13 |
MS->SS |
HANDOVER TO UTRAN COMPLETE |
The SS receives this message on DCCH of cell 2 (UTRAN cell). It implies that the downlink physical channel has synchronised with UTRAN. |
14 |
SS |
The SS starts integrity protection for CS domain |
|
15 |
SS->MS |
UTRAN MOBILITY INFORMATION |
The SS conveys CN system information for the PS domain to the UE in connected mode. See specific message contents. |
16 |
MS->SS |
UTRAN MOBILITY_INFORMATION CONFIRM |
|
17 |
MS->SS |
ROUTING AREA UPDATE REQUEST |
|
18 |
SS->MS |
AUTHENTICATION AND CIPHERING REQUEST |
|
19 |
MS->SS |
AUTHENTICATION AND CIPHERING RESPONSE |
|
20 |
SS |
The SS starts integrity protection for PS domain |
|
21 |
SS->MS |
ROUTING AREA UPDATE ACCEPT |
|
22 |
MS->SS |
SERVICE REQUEST |
MS may optionally perform step 22 to 25. |
23 |
SS->MS |
RADIO BEARER SETUP |
PS RAB establishment |
24 |
MS->SS |
RADIO BEARER SETUP COMPLETE |
|
25 |
SS->MS |
SERVICE ACCEPT |
The SS accepts the SERVICE REQUEST message, indicating the newly established RAB is to be used for the uplink packet session. |
26 |
SS Releases the CS call. |
||
27 |
SS->MS |
MODIFY PDP CONTEXT REQUEST |
SS requests the modification of a PDP context. |
A28 |
MS->SS |
MODIFY PDP CONTEXT ACCEPT |
MS behaviour type A: Accept the PDP context modification |
B28 |
MS->SS |
DEACTIVATE PDP CONTEXT REQUEST |
MS behaviour type B: Initiate the PDP context deactivation. Cause set to ‘QoS not accepted’ |
B28a |
SS->MS |
DEACTIVATE PDP CONTEXT ACCEPT |
MS behaviour type B: Accept the PDP context deactivation. |
B28b |
MS->SS |
DETACH REQUEST |
MS behaviour type B: A non-auto attach MS may (optionally) send a Detach Request. The SS shall wait up to ‘T3390’ seconds for the Detach Request. |
B28c |
SS->MS |
DETACH ACCEPT |
If the MS transmitted a Detach Request message in step B28b then the SS responds with a Detach Accept message. |
Specific message contents
MEASUREMENT INFORMATION
Information Element |
Value/remark |
< RR short PD : bit > |
0 |
< Message type : bit (5) > |
‘00101’B |
< Short layer 2 header : bit (2) > |
‘00’B |
< BA_IND : bit > |
0 |
< 3G_BA_IND : bit > |
0 |
< MP_CHANGE_MARK : bit > |
0 |
< MI_INDEX : bit (4) > |
‘0000’B |
< MI_COUNT : bit (4) > |
‘0000’B |
< PWRC : bit > |
0 |
< REPORT_TYPE : bit > |
1 (Measurement Reporting shall be used) |
< REPORTING_RATE : bit > |
0 (SACCH rate reporting) |
< INVALID_BSIC_REPORTING : bit > |
0 (Report on cells with invalid BSIC not allowed) |
0 | 1 < Real Time Difference Description > |
0 |
0 | 1 < BSIC Description > |
0 |
0 | 1 < REPORT PRIORITY Description > |
0 |
0 | 1 < MEASUREMENT Parameters Description > |
0 |
0 | 1 < extension length > |
0 |
0 | 1 < 3G Neighbour Cell Description > |
1 |
0 | 1 < 3G_Wait : bit (3) > |
0 |
0 | 1 < Index_Start_3G : bit (7) > |
0 |
0 | 1 < Absolute_Index_Start_EMR : bit (7) > |
0 |
0 | 1 < UTRAN FDD Description > |
1 |
0 | 1 < Bandwidth_FDD : bit (3) > |
0 |
1 < Repeated UTRAN FDD Neighbour Cells > ** 0 |
1 |
0 < FDD-ARFCN : bit (14) > |
0 See TS 34.108, clause 6.1.5, table 6.1.1 |
< FDD_Indic0 : bit > |
0 |
< NR_OF_FDD_CELLS : bit (5) > |
‘00001’B |
< FDD_CELL_INFORMATION Field > |
10 bits Scrambling code according to TS 34.108, clause 6.1.4, Default settings for cell No.1 |
1 < Repeated UTRAN FDD Neighbour Cells > ** 0 |
0 |
0 | 1 < UTRAN TDD Description > |
0 |
0 | 1 < CDMA2000 Description > |
0 |
0 | 1 < 3G MEASUREMENT Parameters Description > |
|
< Qsearch_C : bit (4) > |
‘0111’B (Always) |
< 3G_SEARCH_PRIO: bit (1) > |
1 |
< FDD_REP_QUANT : bit (1) > |
1 (Ec/No) |
0 | 1 < FDD_MULTIRAT_REPORTING : bit (2) > |
‘1 01’B (Report on 1 UTRAN cell) |
0 | 1 < FDD_REPORTING_OFFSET : bit (3) > |
0 |
0 | 1 < TDD_MULTIRAT_REPORTING : bit (2) > |
0 |
0 | 1 < TDD_REPORTING_OFFSET : bit (3) > |
0 |
0 | 1 < CDMA2000_MULTIRAT_REPORTING : bit (2) > |
0 |
0 | 1 < CDMA2000_REPORTING_OFFSET : bit (3) > |
0 |
INTERSYSTEM TO UTRAN HANDOVER COMMAND
Information Element |
Value/remark |
RR management Protocol Discriminator |
‘0110’B |
Skip Indicator |
‘0000’B |
Inter System to UTRAN Handover Command Message Type |
‘01100011’B |
Length of Handover to UTRAN Command contents |
Octet length of the "Handover to UTRAN Command value part" |
Handover to UTRAN Command value part |
PER encoded ASN.1 value of type "HandoverToUTRANCommand-r3-IEs", the content is presented in the next table. |
Content of "HandoverToUTRANCommand-r3-IEs" (in tabular format)
Information Element |
Value/remark |
New U-RNTI |
|
– SRNC Identity |
‘000000000001’B |
– S-RNTI-2 |
Set to arbitrary value corresponding to DPCH Offset value currently stored in SS |
Ciphering algorithm |
The presence of this IE is dependent on IXIT statements in TS 34.123-2. If ciphering is indicated to be active, use UEA1. Else, this IE is omitted |
CHOICE specification mode |
Preconfiguration |
CHOICE preconfiguration mode |
Default configuration |
– Default configuration mode |
FDD |
– Default configuration identity |
3 (12.2 kbps speech + 3.4 kbps signalling) |
– RAB Info |
|
– RAB identity (GSM-MAP) |
‘00000001’B |
– CN domain identity |
CS domain |
– NAS Synchronisation Indicator |
Not Present |
– Uplink DPCH info |
|
– Uplink DPCH power control info |
|
– CHOICE mode |
FDD |
– DPCCH power offset |
-78dB (i.e. ASN.1 IE value of -20 ( 2 + ( IE Value * 4)) ) |
– PC Preamble |
1 frame |
– SRB delay |
7 frames |
– CHOICE mode |
FDD |
– Scrambling code type |
Long |
– Reduced scrambling code number |
0 |
– Spreading factor |
64 |
– Downlink information common for all radio links |
|
– Downlink DPCH info common for all RL |
|
– Downlink DPCH power control information |
|
– CHOICE Mode |
FDD |
– DPC mode |
Single TPC |
– Downlink information per radio link list |
1 |
– Downlink information for each radio link |
|
– CHOICE mode |
FDD |
– Primary CPICH info |
|
– Primary scrambling code |
See TS 34.108, clause titled "Default settings for cell No.1 (FDD)” in clause 6.1 |
– Downlink DPCH info for each radio link |
|
– CHOICE mode |
FDD |
– CHOICE mode |
FDD |
– Primary CPICH usage for channel estimation |
Primary CPICH may be used |
– Secondary scrambling code |
1 |
– CHOICE Spreading factor |
128 |
– Code number |
0 |
– Scrambling code change |
No code change |
– TPC combination index |
0 |
– Frequency info |
|
– UARFCN uplink(Nu) |
Not Present Absence of this IE is equivalent to apply the default duplex distance defined for the operating frequency according to TS 25.101 |
– UARFCN downlink(Nd) |
See TS 34.108, clause 6.1.5, table 6.1.1 |
Maximum allowed UL TX power |
See TS 34.108, clause 6.1.5, table 6.1.1 |
Contents of UTRAN MOBILITY INFORMATION message:
The contents of the UTRAN MOBILITY INFORMATION message in this test case is identical to the default message in TS 34.108, with the following exceptions.
Information Element |
Value/remark |
---|---|
Message Type |
|
Integrity check info |
As default |
RRC transaction identifier |
As default |
Integrity protection mode info |
As default |
Ciphering mode info |
As default |
New U-RNTI |
As default |
New C-RNTI |
As default |
UE Timers and constants in connected mode |
As default |
CN information info |
|
– PLMN identity |
Not present |
– CN common GSM-MAP NAS system information |
Not present |
– CN domain related information |
|
– CN domain identity |
CS domain |
– CN domain specific GSM-MAP NAS system info |
|
– T3212 |
30 (periodic updating every 3 hours) |
– ATT |
1 (MS shall apply IMSI attach and detach procedures) |
– CN domain specific DRX cycle length coefficient |
7 |
– CN domain related information |
|
– CN domain identity |
PS domain |
– CN domain specific GSM-MAP NAS system info |
|
– RAC |
6 (GERAN and UTRAN cells use different RAC) |
– NMO |
0 (Network Mode of Operation I) |
– CN domain specific DRX cycle length coefficient |
7 |
URA identity |
Not present |
Downlink counter synchronization info |
Not Present |
47.4 Session Management
47.4.1 PDP Context Activation / Performed on main DCCH and TBFs
47.4.1.1 Conformance requirements
MAX_LAPDm (3 bit field)
This field indicates the maximum number of LAPDm frames on which a layer 3 can be segmented into and be sent on the main DCCH. It is coded as described in the SI 6 Rest Octets IE.
The parameter N201 is the maximum number of octets which are partially or entirely available for the information field of a frame.
The maximum number of octets partially or entirely available for the information field (N201) is:
– for frames of format A and B:
‑ for the SACCH: N201 = 18;
‑ for the FACCH and SDCCH: N201 = 20.
– for frames of format Bbis:
‑ for BCCH, AGCH, NCH and PCH: N201 = 23;
– for frames of format Bter:
– for the SACCH: N201 = 21;
– for the FACCH and SDCCH: N201 = 23;
– for frames of format B4:
– for the SACCH: N201 = 19.
The network should not use the main DCCH to send messages that exceed the maximum length specified for the uplink. The mobile station, however, shall not reject messages that exceed the maximum length.
References
3GPP TS 04.18/44.018, sub-clause 10.5.2.11a
3GPP TS 04.06/44.006, sub-clauses 2.1, 5.8.3
3GPP TS 03.55 sub-clause 4.1.1
47.4.1.2 Test purpose
To verify that:
a) the MS uses the main DCCH when the message size is less than the product of MAX_LAPDm and N201;
b) the MS uses an uplink TBFs when the message size is greater than the product of MAX_LAPDm and N201;
c) the MS does not discard a frame when the network uses the main DCCH when the MS is in DTM;
d) when the network exceeds the maximum LAPDm frame size in transmitting to the MS, the MS does not discard the message and continues to act upon the message.
47.4.1.3 Method of test
Initial Conditions
System Simulator:
2 cells, A and B with same LAI but different RAI, both supporting DTM and with default parameters.
MAX_LAPDm = 000 (Allowing any PS message segmented in up to 5 LAPDm frames)
Network Mode of Operation II
Mobile Station:
The MS is in the active state (U10) of a call, on Timeslot N (chosen arbitrarily) of cell A, with a TMSI and P-TMSI allocated but no allocated TBFs or activated PDP context.
The MS is set to use the following as an APN:
APN Network Identifier = “THIS-APN-HAS-TO-BE-63-OCTETS-IN-LENGTH-AND-IS-ENCODED-IN-ASCII “
APN Operator Identifier = “ mnc<MNC>.mcc<MCC>.gprs”
The <MNC> and <MCC> are derived from the IMSI.
Note: The APN has been chosen to ensure that the ACTIVATE PDP CONTEXT REQUEST message is over the threshold for main DCCH use, forcing the MS not to use the main DCCH for this signalling message.
Specific PICS statements
–
PIXIT statements
–
Test Procedure
An MS in dedicated mode on cell A is ordered to complete the Handover procedure to cell B. Once the MS has successfully completed the handover procedure to the cell, the SS sends the DTM INFORMATION message, informing the MS of the cell parameters and then the MS completes the Routing Area Updating procedure on the main DCCH. The MS is then triggered to activate a PDP context. The MS has to establish an uplink TBF to be able to send the ACTIVATE PDP CONTEXT REQUEST because the message size is greater than is allowed on the main DCCH. The SS responds with the ACTIVATE PDP CONTEXT ACCEPT message on the main DCCH. After the MS has received the ACTIVATE PDP CONTEXT ACCEPT message optional can perform an XID negotiation procedure, the SS sends, on the main DCCH, a GMM INFORMATION message to the MS, with an incorrect message type included in the header. The MS responds to this unknown message type with a GMM STATUS message.
Maximum Duration of Test
5 minutes
Expected Sequence
Step |
Direction |
Message |
Comments |
1 |
SS |
MS in state U10, on an arbitrarily chosen Timeslot N of cell A, k=1, Channel Type = TCH/F; or k=2, Channel Type = TCH/H. |
|
2 |
SS |
SS waits 10 seconds, maintaining the CS call. |
|
3 |
SS->MS |
HANDOVER COMMAND |
Instructs MS to Handover to Timeslot N of the cell B, utilising a TCH/F. |
4 |
MS->SS |
HANDOVER ACCESS |
Repeated on every burst of the uplink main DCCH (and optionally on the SACCH) until reception of PHYSICAL INFORMATION. Handover Reference as included in the HANDOVER COMMAND. |
5 |
SS->MS |
PHYSICAL INFORMATION |
|
6 |
MS->SS |
HANDOVER COMPLETE |
|
7 |
SS->MS |
DTM INFORMATION |
Contains the cell parameters |
8 |
MS->SS |
GPRS INFORMATION |
Containing a ROUTING AREA UPDATE REQUEST message. |
9 |
SS->MS |
GPRS INFORMATION |
Containing a ROUTING AREA UPDATE ACCEPT message. Does not allocate MS a new P-TMSI. Negotiated Ready timer value IE should not be included. Force to standby indicator set |
10 |
SS |
MS triggered to request PDP context activation. |
|
11 |
MS->SS |
DTM REQUEST |
The MS requests the transition into DTM, to send the ACTIVATE PDP CONTEXT REQUEST message which requires more LAPDm frames then allowed for use of the main DCCH for PS signalling. |
12 |
SS->MS |
PACKET ASSIGNMENT |
The SS allocates uplink resources to the MS, k=1:on Timeslot (N 1) MOD 8. k=2:on Timeslot N MOD 8. |
13 |
MS->SS |
ACTIVATE PDP CONTEXT REQUEST |
Requests PDP context activation. This message is sent on the allocated uplink PDCH. |
14 |
SS->MS |
GPRS INFORMATION |
Contains the ACTIVATE PDP CONTEXT ACCEPT message. Although the SS should establish a downlink TBF to send this message, as the MS is in DTM, the MS shall be able to receive this message on the main DCCH. Steps 15 to 19 are performed only if MS requests XID negotiation procedure after PDP context activation. SS waits 5 s for the request of the optional XID procedure. Steps 15 and 16 are only performed if MS is not in DTM mode any more. If the MS does not include any PDP address, dynamic PDP address shall be assigned by the SS. The MS with Rel-8 behaviour shall not include the PDP address and the PDP address allocation is dynamic. |
15 (optional) |
MS->SS |
DTM REQUEST |
The MS requests the transition into DTM, to send the XID REQUEST message |
16 (optional) |
SS->MS |
PACKET ASSIGNMENT |
The SS allocates uplink resources to the MS, k=1:on Timeslot (N 1) MOD 8. k=2:on Timeslot N MOD 8. |
17 (optional) |
MS->SS |
XID REQUEST |
|
18 (optional) |
SS->MS |
PACKET ASSIGNMENT |
The SS allocates downlink resources to the MS, k=1:on Timeslot (N +- 1) MOD 8. k=2:on Timeslot N MOD 8. |
19 (optional) |
SS->MS |
XID RESPONSE |
|
20 |
SS->MS |
GPRS INFORMATION |
Wait 5 seconds before sending GPRS INFORMATION Contains the GMM INFORMATION message. This message is over the size that is allowed for transmission on the main DCCH, but it is a requirement that the MS shall be able to receive an ‘oversized’ message on the main DCCH. |
21 |
MS->SS |
GPRS INFORMATION |
Contains the GMM STATUS message: Message cause #97 shall be returned by the MS to indicate the message received is of unknown message type. |
Specific Message Contents
k=1
PACKET ASSIGNMENT (Step 12 and Step 16):
As default message contents except: |
|
GPRS broadcast information |
|
– GPRS Cell Options |
|
– NMO |
01 Network Mode 2 |
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N1) MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
PACKET ASSIGNMENT (Step 18):
As default message contents except: |
|
GPRS broadcast information |
|
– GPRS Cell Options |
|
– NMO |
01 Network Mode 2 |
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
(N1) MOD 8 |
k=2:
PACKET ASSIGNMENT (Step 12 and Step 16):
As default message contents except: |
|
GPRS broadcast information |
|
– GPRS Cell Options |
|
– NMO |
01 Network Mode 2 |
RR Packet Uplink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N MOD 8 |
RR Packet Downlink Assignment IE |
Not included |
PACKET ASSIGNMENT (Step 18):
As default message contents except: |
|
GPRS broadcast information |
|
– GPRS Cell Options |
|
– NMO |
01 Network Mode 2 |
RR Packet Uplink Assignment IE |
Not included |
RR Packet Downlink Assignment IE |
|
– TIMESLOT_ALLOCATION |
N MOD 8 |
GMM INFORMATION (Step 20):
As default message contents except: |
|
GMM Information message identity |
00111111 |
Full name for network IE |
|
– Network Name IEI |
43 |
– Length of Network Name contents |
161 |
– Coding Scheme |
000 |
– Add CI |
0 |
– Number of spare bits in last octet |
0 |
– Text String |
0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef |