3GPP TSG-CN WG 1#4		
1 – 4 June 1999
Sophia Antipolis , France

Agenda: 	7.1 MS Classmark
Source: 	FUJITSU Limited
Subject: 	Proposed Working Assumption Text for Classmark Splitting WI 
Purpose: 	for decision

Abstract
This contribution proposes text of working assumptions about MS Classmark Splitting WI. 
1. Introduction
This contribution proposes working assumption texts for MS Classmark splitting WI. These texts are revised from the original texts in N1-99542 based on the comments received in the meeting. It is proposed to capture these texts in Technical Report as working assumption of this issue.
2. Proposed Working Assumption Texts
a)	Radio access network technology and core network technology should be clearly separated in principle so that MM protocol, which is for NC, should be radio independent.
b)	Mobile station capability related to RAN and CN need to be set in different parameters. Only CN related parameter should be present in MM message, and radio dependent information should not be included in MM messages.
c)	Two MS Classmark should be maintained both for UMTS and GSM. These are selectively used depending on the indication given by the CN.
d)	Not to define several MS classmark IE (e.g. for location updating, for CM service invoking, etc.) Same Mobile station classmark IE should be applied both for Location updating and CM service invocation considering the reuse of same RR connection
2. Additional Discussion
It was decided that MS Classmark should be selected by indication from CN. Considering the case that RAN is GSM and CN is UMTS, GSM BSS will analyses the MS Classmark in CM Service Request message. If MS Classmark is for UMTS, then GSM BSS can not understand the information. Therefore MS Classmark 2 should be selected in this case.
Following the above understanding, it is proposed to replace the working assumption item c) by text below.
c)	Two MS Classmark should be maintained both for UMTS and GSM. These are selectively used depending on the indication given by the CN and RAN.