44.2.10 MS Radio Access Capability Interrogation
3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS
This procedure allows the network to request the MS to supply its radio access capability information to the network.
44.2.10.1 Conformance requirements
In state GMM-DEREGISTERED, the MS initiates the GPRS attach procedure by sending an ATTACH REQUEST message to the network, starts timer T3310 and enters state GMM-REGISTERED-INITIATED.
The ATTACH REQUEST message contains the MS Radio Access capability information element.
The purpose of the MS RA capability information element is to provide the radio part of the network with information concerning radio aspects of the mobile station. The contents might affect the manner in which the network handles the operation of the mobile station.
The MS RA capability is a type 4 information element, with a maximum length of 52 octets.
DARP is contained in the Release 6 specifications. In order to implement an MS conforming to Release 99 but supporting DARP, it is necessary for the MS to additionally conform to some parts of the Release 6 specifications, such as the radio frequency requirements for DARP and some signalling extensions relating to the MS Classmark and radio access capabilities.
References
3GPP TS 04.08 / 3GPP TS 24.008 subclauses 4.7.3.1.1, 9.4.1 and 10.5.5.12a.
3GPP TS 05.15 / 3GPP TS 45.015
44.2.10.2 Test purpose
To verify that the MS supplies all its radio access capabilities and Network MS Capabilities, when attaching to the network for GPRS services.
44.2.10.3 Method of test
44.2.10.3.1 Initial Conditions
System Simulator:
One cell operating in network operation mode II.
Mobile Station:
The MS has a valid IMSI. MS is Idle Updated.
Specific PICS statements:
– Switch off on button (TSPC_Feat_OnOff).
– Automatic GPRS attach procedure at switch on or power on (TSPC_AddInfo_on_auto_GPRS_AP).
PIXIT statements:
– Contents of MS Radio Access Capability.
Maximum duration of test
3 minutes.
44.2.10.3.2 Test procedure
The MS sends an ATTACH REQUEST message with identity IMSI. The SS allocates a P-TMSI and returns ATTACH ACCEPT message with a P-TMSI. The MS acknowledge the P-TMSI by sending ATTACH COMPLETE message.
Expected sequence
Step |
Direction |
Message |
Comments |
---|---|---|---|
1 |
MS |
The MS is powered up or switched on and initiates an attach procedure (see PICS). |
|
2 |
MS -> SS |
ATTACH REQUEST |
Attach type = ‘GPRS attach’ Mobile identity = IMSI Contents as defined for default message. |
3 |
SS -> MS |
ATTACH ACCEPT |
Attach result = ‘GPRS only attached’ Mobile identity = P-TMSI-2 P-TMSI-2 signature Routing area identity = RAI-1 |
4 |
MS -> SS |
ATTACH COMPLETE |
Specific message Contents
Contents of ATTACH REQUEST message:
Protocol discriminator |
1000 (MM message for GPRS service) |
Skip indicator |
0000 |
Attach request message identity |
00000001 |
MS network capability |
See PICS/PIXIT. |
MS Radio Access capability |
See PICS/PIXIT. Note for R99 and onwards a MS that supports “Downlink Advance Receiver Performance” shall include the Downlink Advanced Receiver Performance indication. |