9.1.18b Immediate packet assignment

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

This message is sent on the CCCH by the network to multiple mobile stations in idle mode to assign either an uplink or a downlink packet data channel configuration in the cell. In addition, this message is sent on the CCCH to a mobile station in packet idle mode when it has sent an EGPRS MULTILATERATION REQUEST message indicating ‘RLC Data Block method’ or ‘Page Response for Positioning Event’ (see table 9.1.18.1) or indicating ‘Access Burst method’ or ‘Extended Access Burst method’ (see sub-clause 3.5.2.1.2, sub-clause 3.11 and table 9.1.18.1a).

See table 9.1.18b.1.

The L2 pseudo length of this message is the sum of lengths of all information elements present in the message except the IPA Rest Octets and L2 Pseudo Length information elements.

NOTE: The network should take into account limitations of certain mobile stations to understand IMMEDIATE PACKET ASSIGNMENT message as these mobile stations may not be able to decode the Page Mode information element.

Message type: IMMEDIATE PACKET ASSIGNMENT

Significance: dual

Direction: network to mobile station

Table 9.1.18b.1: IMMEDIATE PACKET ASSIGNMENT message content

IEI	Information element	Type / Reference	Presence	Format	length
	L2 Pseudo Length	L2 Pseudo Length 10.5.2.19	M	V	1
	RR management Protocol Discriminator	Protocol Discriminator 10.2	M	V	1/2
	Skip Indicator	Skip Indicator 10.3.1	M	V	1/2
	Immediate Packet Assignment Message Type	Message Type 10.4	M	V	1
	Page Mode	Page Mode 10.5.2.26	M	V	1/2
	Feature Indicator	Feature Indicator 10.5.2.76	M	V	1/2
	IPA Rest Octets	IPA Rest Octets 10.5.2.78	M	V	19
05	Request Reference 1	Request Reference Alt 10.5.2.87	O	TV	5
06	Request Reference 2	Request Reference Alt 10.5.2.87	O	TV	5
07	Request Reference 3	Request Reference Alt 10.5.2.87	O	TV	5
08	Request Reference 4	Request Reference Alt 10.5.2.87	O	TV	5