9.1.11a UTRAN Classmark Change

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

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

This message is sent on the main DCCH by the mobile station to the network to indicate a UTRAN Classmark Change or as a response to a UTRAN classmark enquiry. See table 9.1.11a.1.

Message type: UTRAN CLASSMARK CHANGE

Significance: dual

Direction: mobile station to network

Table 9.1.11a.1: UTRAN CLASSMARK CHANGE message content

IEI	Information element	Type / Reference	Presence	Format	length
	RR management Protocol Discriminator	Protocol Discriminator 10.2	M	V	1/2
	Skip Indicator	Skip Indicator 10.3.1	M	V	1/2
	UTRAN Classmark Change Message Type	Message Type 10.4	M	V	1
	UTRAN Classmark	UTRAN Classmark 10.5.2.7a	M	LV	2-n

NOTE: The ASN.1 coding of the INTER RAT HANDOVER INFO (see 3GPP TS 25.331) included in UTRAN Classmark information element is done such that segmentation of the UTRAN CLASSMARK CHANGE message and hence excessive call setup time can be avoided if the network uses similar values of version numbers (Value Tags).