27.2 MS identification by short TMSI

3GPP51.010-1Mobile Station (MS) conformance specificationPart 1: Conformance specificationTS

27.2.1 Definition

The TMSI is temporarily used for identification of the MS by a GSM network. It will have been previously assigned by the network. The TMSI is stored in the SIM by the ME and read during the SIM/ME initialization procedure.

27.2.2 Conformance requirement

On the receipt of an IMMEDIATE ASSIGNMENT message the MS shall send PAGING RESPONSE containing the TMSI stored in the SIM.

3GPP TS 11.11, subclauses 11.2.1 and 11.4.5, 3GPP TS 04.08 / 3GPP TS 24.008, subclause 10.5.1.4.

27.2.3 Test purpose

1) To verify that the ME uses the TMSI stored in the SIM.

2) To verify that the ME can handle a TMSI of less than maximum length.

27.2.4 Method of test

27.2.4.1 Initial conditions

The SS transmits on the BCCH, with the following network parameters:

Attach/detach: disabled.

LAI-MCC: 246

LAI-MNC 81 or 813 (see Note 0)

LAI-LAC: 0001

Access control: unrestricted.

The default SIM is used with the following exception.

EFLOCI (Location Information)

Logically: LAI-MCC: 246

LAI-MNC: 81 or 813 (See Note 0)

LAI-LAC: 0001

TMSI: "2143"

Coding:

B1

B2

B3

B4

B5

B6

B7

B8

B9

B10

B11

2-digit MNC

00

00

21

43

42

F6

18

00

01

FF

00

3-digit MNC

00

00

21

43

42

36

18

00

01

FF

00

The SIM is installed into the ME and the MS is powered on.

27.2.4.2 Procedure

a) The SS sends PAGING REQUEST to the MS using the TMSI stored in the SIM.

b) After receipt of a CHANNEL REQUEST from the MS, the SS sends IMMEDIATE ASSIGNMENT to the MS.

c) After receipt of a PAGING RESPONSE from the MS, the SS sends CHANNEL RELEASE to the MS.

27.2.5 Test requirement

After step b) the MS shall send PAGING RESPONSE to the SS containing the TMSI stored in the SIM.