9.4.9 Location Updating / Accept, Interaction between Equivalent PLMNs and Forbidden PLMNs.
34.123-13GPPPart 1: Protocol conformance specificationRelease 15TSUser Equipment (UE) conformance specification
9.4.9.1 Definition
Test to verify that, before storing the ‘equivalent PLMN list’ received from the network during a Location Update, the UE removes any PLMN already included in the ‘forbidden PLMN list’. Consequently the UE shall not select a PLMN Equivalent to the registered PLMN if it is included in the ‘forbidden PLMN list’ in the USIM.
9.4.9.2 Conformance requirement
The mobile station shall store the equivalent PLMNs list, as provided by the network, except that any PLMN code that is already in the "forbidden PLMN list" shall be removed from the "equivalent PLMNs" list before it is stored by the mobile station.
References
TS 24.008, 4.4.4.6
9.4.9.3 Test purpose
To verify that the UE shall not select a forbidden PLMN even though it is included in the equivalent PLMN list provided by the network because forbidden PLMNs shall not be stored in the mobile’s equivalent PLMN list.
9.4.9.4 Method of test
Initial conditions
– System Simulator:
– two cells: A, and B. Cell A belongs to PLMN1. Cell B belongs to PLMN2.
NB: i) Cell B will be mapped to Cell 4 as found in TS 34.108 clause 6.1.4.1.
– User Equipment:
– the UE is switched off;
– the UE is in automatic PLMN selection mode.
– the UE is equipped with a USIM containing default values.
– prior to performing the actual test procedure PLMN2 is set as forbidden PLMN by performing an ATTACH/LAU REJ procedure with cause PLMN not allowed.
Related ICS/IXIT statement(s)
Switch off on button Yes/No.
Test procedure
Cells A and B are made available. When the UE is switched-on it will perform a normal location updating in Cell A, since Cell B belongs to a forbidden PLMN. The SS will respond sending a LOCATION UPDATING ACCEPT message that includes PLMN2 in the equivalent PLMN list. However the UE shall not store PLMN 2 in its equivalent PLMN list as it is a forbidden PLMN. Therefore, when Cell A is made unavailable the UE will not select the only remaining cell (Cell B), remaining in limited service state.
Expected Sequence
|
Step |
Direction |
Message |
Contents |
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UE |
SS |
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The following messages shall be sent and received on Cell A |
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1 |
SS |
Set the cell type of Cell A to the "Suitable neighbour cell". Set the cell type of Cell B to the "Suitable neighbour cell". (see note) |
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2 |
UE |
The UE is switched on by either using the Power Switch or by applying power. |
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3 |
SS |
The SS verifies that the IE "Establishment cause" in the received RRC CONNECTION REQUEST message is set to "Registration". |
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4 |
Void |
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5 |
Void |
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6 |
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LOCATION UPDATING REQUEST |
"Location Update Type": normal. |
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6a |
SS |
The SS starts integrity protection. |
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7 |
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LOCATION UPDATING ACCEPT |
Equivalent PLMN List: PLMN 2 |
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8 |
SS |
The SS releases the RRC connection. |
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9 |
Void |
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10 |
SS |
Set the cell type of Cell A to the "non-suitable cell". (see note) |
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11 |
SS |
The SS shall wait for 7 minutes during which no messages should be received. |
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NOTE: The definitions for "Suitable neighbour cell" and "non-suitable cell" are specified in TS 34.108 clause 6.1 "Reference Radio Conditions for signalling test cases only". |
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Specific message contents
None.
9.4.9.5 Test requirements
At step 11 the UE shall not perform a normal location updating in Cell B.