3.4.11 Classmark interrogation procedure

3GPP44.018GSM/EDGE Radio Resource Control (RRC) protocolMobile radio interface Layer 3 specificationRelease 17TS

This procedure allows the network to request additional classmark information from the mobile station (e.g. if the information initially sent by the mobile station is not sufficient for network decisions). For a multi-RAT MS this procedure allows in addition the network to request INTER RAT HANDOVER INFO or CDMA2000 MS Capability information and/or GERAN Iu mode MS radio capability.

3.4.11.1 Classmark interrogation initiation

The network initiates the classmark interrogation procedure by sending a CLASSMARK ENQUIRY message to the mobile station on the main DCCH.

3.4.11.2 Classmark interrogation completion

On receipt of the CLASSMARK ENQUIRY message the mobile station sends a CLASSMARK CHANGE and/or a UTRAN CLASSMARK CHANGE and/or a CDMA2000 CLASSMARK CHANGE and/or a GERAN IU MODE CLASSMARK CHANGE message to the network on the main DCCH. The Classmark Enquiry Mask information element in the CLASSMARK ENQUIRY message indicates the type of request. If the Classmark Enquiry Mask information element is not included in the CLASSMARK ENQUIRY message, this indicates a request for CLASSMARK CHANGE message.

The CLASSMARK CHANGE message contains the mobile station classmark 2 information element. It may also contain a Classmark 3 Information Element.

The UTRAN CLASSMARK CHANGE message contains the INTER RAT HANDOVER INFO (UTRAN specific information).

The CDMA2000 CLASSMARK CHANGE message contains CDMA2000 UE capability information.

The GERAN IU MODE CLASSMARK CHANGE message contains MS GERAN IU MODE RADIO ACCESS CAPABILITY IE (see 3GPPP TS 44.118).

If the CLASSMARK CHANGE and one or more of these additional messages are to be sent by the MS, the CLASSMARK CHANGE message shall be sent first.