9.1.43k System information Type 13alt

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

This message is sent on the BCCH if indicated in the SYSTEM INFORMATION TYPE 3 message. The message is sent by the network to provide information related to Iu mode in the cell. See table 9.1.43k.1. Special requirements for the transmission of this message apply, see 3GPP TS 45.002.

A mobile station not supporting GERAN Iu mode shall treat this message as an unknown message type.

The L2 Pseudo Length of this message has the value 0.

Message type: SYSTEM INFORMATION TYPE 13alt

Significance: dual

Direction: network to mobile station

Table 9.1.43k.1: SYSTEM INFORMATION TYPE 13alt 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
	System Information Type 13alt Message Type	Message Type 10.4	M	V	1
	SI 13alt Rest Octets	SI 13 Rest Octets 10.5.2.37l	M	V	20

9.1.43m System information type 21

This message is sent optionally on the BCCH by the network to provide the list of EAB specific authorized access classes and an indication of the subcategory of mobile stations targeted by EAB (see also 3GPP TS 22.011). Multiple instances of this message may be sent by the network. Special requirements for the transmission of this message apply, see 3GPP TS 45.002.

This message has a L2 pseudo length of 2.

Message type: SYSTEM INFORMATION TYPE 21

Significance: dual

Direction: network to mobile station

Table 9.1.43m.1: SYSTEM INFORMATION TYPE 21 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
	System Information Type 21 Message Type	Message Type 10.4	M	V	1
	SI 21 Rest Octets	SI 21 Rest Octets 10.5.2.37m	M	V	20

9.1.43n System information type 22

This message is sent on the BCCH if indicated in the SYSTEM INFORMATION TYPE 3 message. It is sent by the network, giving information about network sharing and domain-specific access control. Multiple instances of this message may be sent by the network. Special requirements for the transmission of this message apply, see 3GPP TS 45.002.

This message has a L2 pseudo length of 2.

Message type: SYSTEM INFORMATION TYPE 22

Significance: dual

Direction: network to mobile station

Table 9.1.43m.1: SYSTEM INFORMATION TYPE 22 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
	System Information Type 22 Message Type	Message Type 10.4	M	V	1
	SI 22 Rest Octets	SI 22 Rest Octets 10.5.2.37n	M	V	20

9.1.43o System information type 23

This message is sent on the BCCH if indicated in the SYSTEM INFORMATION TYPE 22 message. It is sent by the network when network sharing is in use in a cell, providing PLMN-specific information about UTRAN/E-UTRAN frequencies related to inter RAT cell reselection. Multiple instances of this message may be sent by the network. Special requirements for the transmission of this message apply, see 3GPP TS 45.002.

This message has a L2 pseudo length of 2.

Message type: SYSTEM INFORMATION TYPE 23

Significance: dual

Direction: network to mobile station

Table 9.1.43o.1: SYSTEM INFORMATION TYPE 23 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
	System Information Type 23 Message Type	Message Type 10.4	M	V	1
	SI 23 Rest Octets	SI 23 Rest Octets 10.5.2.37o	M	V	20