27.6a MS updating forbidden PLMNs – for GPRS

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

27.6a.1 Definition

A list of forbidden PLMNs stored in the SIM provides storage for up to 4 entries, and is managed by the MS. In automatic PLMN selection mode the MS controls registration attempts to appropriate networks with respect to this list of forbidden PLMNs. As a result of an attach reject with the cause "PLMN not allowed" the MS stores the PLMN which rejected the update request in the SIM.

27.6a.2 Conformance requirement

1. The MS receiving the ATTACH REJECT message, […] shall then take one of the following actions depending upon the reject cause:

[…]

# 11 (PLMN not allowed);

The MS shall delete any RAI, P-TMSI, P-TMSI signature, and GPRS ciphering key sequence number stored, shall set the GPRS update status to GU3 ROAMING NOT ALLOWED (and shall store it according to subclause 4.1.3.2), shall reset the GPRS attach attempt counter and shall change to state GMM-DEREGISTERED.

The MS shall store the PLMN identity in the "forbidden PLMN list".

3GPP TS 04.08 / 3GPP TS 24.008 subclause 4.7.3.1.4

2. When less than four FPLMNs exist in the EF, storage of an additional FPLMN shall not cause any existing FPLMN to be lost.

3GPP TS 11.11 / 3GPP TS 51.011 subclauses 10.3.16

27.6a.3 Test purpose

To verify that the MS correctly updates the EFFPLMN, i.e. fill up existing gaps in the elementary file before overwriting any existing entries.

27.6a.4 Method of test

27.6a.4.1 Initial conditions

The SS transmits default message contents of Cell A, subclauses 40.1.1 and 40.2.1.1 on the BCCH, with the following exceptions:

RAI-MCC: 234

RAI-MNC 03 or 034 (see Note 0)

RAI-LAC: 0001

Access control: unrestricted.

Network Mode of Operation is set to NMO II.

The GPRS SIM is used with the following exception:

EFFPLMN (Forbidden PLMNs)

Logically:

PLMN1

PLMN2

PLMN3

PLMN4

MCC

234

EMPTY

234

234

MNC

2-digit

02

04

05

3-digit

023

045

056

Coding:

B1

B2

B3

B4

B5

B6

B7

B8

B9

B10

B11

B12

2-digit MNC

32

F4

20

FF

FF

FF

32

F4

40

32

F4

50

3-digit MNC

32

34

20

FF

FF

FF

32

54

40

32

64

50

The SIM is installed into the ME and the MS is set to automatic PLMN selection mode.

27.6a.4.2 Procedure

a) The MS is powered on.

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

c) After receipt of an ATTACH REQUEST from the MS, the SS sends ATTACH REJECT to the MS with the cause "PLMN not allowed".

d) The MS is soft powered down.

27.6a.5 Test requirement

1) After step b) the MS shall send ATTACH REQUEST to the SS.

2) After step d) the SIM shall contain:

EFFPLMN (Forbidden PLMNs)

Logically:

PLMN1

PLMN2

PLMN3

PLMN4

MCC

234

234

234

234

MNC (See Note 0)

2-digit

Either

02

03

04

05

Or

02

04

05

03

3-digit

Either

023

034

045

056

Or

023

045

056

023

Coding:

B1

B2

B3

B4

B5

B6

B7

B8

B9

B10

B11

B12

2-digit MNC

Either

32

F4

20

32

F4

30

32

F4

40

32

F4

50

Or

32

F4

20

32

F4

40

32

F4

50

32

F4

30

3-digit MNC

Either

32

34

20

32

44

30

32

54

40

32

64

50

Or

32

34

20

32

54

40

32

64

50

32

44

30