12.7b Extended Channel Request Description

3GPP44.060General Packet Radio Service (GPRS)Mobile Station (MS) - Base Station System (BSS) interfaceRadio Link Control / Medium Access Control (RLC/MAC) protocolRelease 17TS

The Extended Channel Request Description information element is sent by the mobile station to the network to request multiple uplink resources.

Table 12.7b.1: Extended Channel Request Description information elements

< Extended Channel Request Description IE > ::=

< PFI : bit (7) >

< RADIO_PRIORITY : bit (2) >

< RLC_MODE : bit (1) >

{ 0 | 1 < LLC_ PDU_TYPE : bit (1) > }

{ 0 | 1 < Extended Channel Request Description IE > } ; — IE to be repeated only when needed and
— when included in a Multiple TBF request message

Table 12.7b.2: Extended Channel Request Description information element details

PFI (7 bit field)
This field contains the PFI parameter identifying a Packet Flow Context. The PFI parameter is encoded as the contents of the PFI information element as defined in 3GPP TS 44.018.

RADIO_PRIORITY (2 bit field)
This field indicates the Radio Priority of the requested TBF. The field is encoded as the Radio Priority field of the Packet Channel Request (see sub-clause 11.2.5).

RLC_MODE (1 bit field)
This field indicates the RLC mode of the requested TBF.

0 RLC acknowledged mode
1 RLC unacknowledged mode

LLC_ PDU_TYPE (1 bit field)
This field indicates the type of the first LLC PDU to be transmitted over the requested uplink TBF. If the TBF request is not for an LLC PDU then this field shall be omitted.

0 LLC PDU is SACK or ACK
1 LLC PDU is not SACK or ACK