12.30 MS Radio Access Capability 2
3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS
The MS Radio Access Capability 2 information element is used to provide the radio part of the network with information concerning radio aspects of the mobile station. The contents may affect the manner in which the network handles the operation of the mobile station.
For the indication of the radio access capabilities the following conditions shall apply (see 3GPP TS 24.008 for the definition of the parameters):
– Among the three Access Technology Types GSM 900-P, GSM 900-E and GSM 900-R the MS shall include only one access technology type denoting the GSM 900 band it supports.
– Due to shared radio frequency channel numbers between GSM 1800 and GSM 1900, the mobile station should provide the relevant radio access capability for either GSM 1800 band OR GSM 1900 band, not both.
– One of two different coding forms shall be used by the mobile station when indicating its radio access capabilities to the network: the regular coding is where all capabilities are indicated explicitly within an Access capabilities struct for each signalled access technology and the alternative coding where access technologies with same capabilities are indicated within the Additional access technologies struct (see 3GPP TS 24.008).
– If the alternative coding by using the Additional access technologies struct is chosen by the mobile station, the mobile station shall indicate its radio access capability for the serving BCCH frequency band in the first included Access capabilities struct if this information element is not sent in response to an Access Technologies Request from the network or if none of the requested Access Technology Types is supported by the mobile station – see note 3. Otherwise, the mobile station shall include the radio access capabilities for the frequency bands it supports in the order of priority requested by the network as specified in sub-clause 7.1.3.2.
– If this information element is sent during a GPRS TBF establishment, the mobile station should indicate as many as possible of its supported Access Technology Types. The maximum number of indicated Access Technology Types depends on the remaining bits left in the RLC/MAC message containing the MS Radio Access Capability 2 IE. The radio access capability for the serving BCCH frequency band shall be part of the indicated technologies, the inclusion of any other radio access capability is a mobile station implementation option.
– If this information element is sent during an EGPRS TBF establishment, the mobile station shall indicate its supported Access Technology Types within the ones that are requested by the network or the access technology of the serving BCCH frequency band, as specified by the relevant procedures.
– If the first instance of radio access capabilities information for a supported access technology type fits in its entirety using the Access capabilities struct of the MS Radio Access Capability 2 IE sent within the PACKET RESOURCE REQUEST message, the mobile station may use the alternative coding for encoding other access technology types that are provided within either the PACKET RESOURCE REQUEST message or the ADDITIONAL MS RADIO ACCESS CAPABILITIES message. In the case where the ADDITIONAL MS RADIO ACCESS CAPABILITIES message is sent to the network, the first Access Technology Type may be set to "1111".
– If message size limitations prevent the first instance of access capabilities information for a supported access technology type from being provided in its entirety using the Access capabilities struct of the MS Radio Access Capability 2 IE sent within the PACKET RESOURCE REQUEST message, the mobile station shall:
– For this instance of access technology type, include as much of the access capabilities information as possible that can fit within the Access capabilities struct of the MS Radio Access Capability 2 IE sent within the PACKET RESOURCE REQUEST message. At minimum the mobile station shall provide up to and including its R99 access capabilities information within the Access capabilities struct. See note 1.
– For this instance of access technology type, include the entire access capabilities information using the Access capabilities struct of the MS Radio Access Capability 2 IE sent within the ADDITIONAL MS RADIO ACCESS CAPABILITIES message (if this message is sent to the network). See note 2.
NOTE 1: The mobile station has to set the ADDITIONAL MS RAC INFORMATION AVAILABLE bit to 1 in the PACKET RESOURCE REQUEST message to signal that the instance of radio access capabilities provided in this message is incomplete – see sub-clauses 7.1.3.2 and 11.2.16.
NOTE 2: Additional instances of access capabilities information for other access technology types may be described using either the Access capabilities struct (regular coding) or the Additional access technologies struct (alternative coding).
NOTE 3: If the radio access capability for the serving BCCH frequency band has been included in its entirety in the PACKET RESOURCE REQUEST message, it should not be provided again in the ADDITIONAL MS RADIO ACCESS CAPABILITIES message, except in the cases specified in sub-clause 7.1.3.2.1 where this message is sent in response to a request from the network.
Table 12.30.1: MS Radio Access Capability 2 information element
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< MS Radio Access Capability 2 IE > ::= < MS RA capability : < MS RA capability value part struct > > ; |
Table 12.30.2: MS Radio Access Capability 2 information element details
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MS RA capability |