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Feature #4634

Iu: record SAC, and show RNC ID and SAC in the vty upon 'show subscriber'

Added by neels 17 days ago. Updated 17 days ago.

Status:
New
Priority:
Low
Assignee:
-
Category:
-
Target version:
-
Start date:
06/24/2020
Due date:
% Done:

0%

Resolution:

Description

In BSSAP, osmo-msc since recently properly records the Complete Layer 3 Information cell id and shows it in the vty.
Similar should be possible for Iu, though in the Iu InitialUE-Message, there is no Cell ID, but rather an RNC ID and a SAC.
osmo-msc should store those and show them in the vty in 'show subscriber', similarly to the Cell ID.

See ran_msg_iu.c, ran_iu_decode_l3_initial(), which passes the PLMN and LAI from the InitalUE message,
but not the RNC ID nor the SAC.

These should also be verified by the ttcn3-msc-test, see MSC_Tests.ttcn f_start_handler(), which currently disables the cell id test for Iu.
The cell id test f_verify_vty_lac_ci() should accomodate the difference between GERAN and UTRAN, and RNC/SAC testing should happen in the TC_iu_* tests.

History

#1 Updated by neels 17 days ago

  • Priority changed from Normal to Low

for illustration, a dissected InitialUE-Message.
The complete SAI and GlobalRNC-Id should probably make their way to the VLR.

MTP 3 User Adaptation Layer
Signalling Connection Control Part
Radio Access Network Application Part
    RANAP-PDU: initiatingMessage (0)
        initiatingMessage
            procedureCode: id-InitialUE-Message (19)
            criticality: ignore (1)
            value
                InitialUE-Message
                    protocolIEs: 6 items
                        Item 0: id-CN-DomainIndicator
                            ProtocolIE-Field
                                id: id-CN-DomainIndicator (3)
                                criticality: ignore (1)
                                value
                                    CN-DomainIndicator: cs-domain (0)
                        Item 1: id-LAI
                            ProtocolIE-Field
                                id: id-LAI (15)
                                criticality: ignore (1)
                                value
                                    LAI
                                        pLMNidentity: 62f224
                                        Mobile Country Code (MCC): Germany (262)
                                        Mobile Network Code (MNC): Vodafone GmbH (42)
                                        lAC: 0017
                        Item 2: id-SAI
                            ProtocolIE-Field
                                id: id-SAI (58)
                                criticality: ignore (1)
                                value
                                    SAI
                                        pLMNidentity: 62f224
                                        Mobile Country Code (MCC): Germany (262)
                                        Mobile Network Code (MNC): Vodafone GmbH (42)
                                        lAC: 0017
                                        sAC: 0000
                        Item 3: id-NAS-PDU
                            ProtocolIE-Field
                                id: id-NAS-PDU (16)
                                criticality: ignore (1)
                                value
                                    NAS-PDU: 05080262f220999952082926240000000170
                        Item 4: id-IuSigConId
                            ProtocolIE-Field
                                id: id-IuSigConId (79)
                                criticality: ignore (1)
                                value
                                    IuSignallingConnectionIdentifier: 000017 [bit length 24, 0000 0000  0000 0000  0001 0111 decimal value 23]
                        Item 5: id-GlobalRNC-ID
                            ProtocolIE-Field
                                id: id-GlobalRNC-ID (86)
                                criticality: ignore (1)
                                value
                                    GlobalRNC-ID
                                        pLMNidentity: 62f224
                                        Mobile Country Code (MCC): Germany (262)
                                        Mobile Network Code (MNC): Vodafone GmbH (42)
                                        rNC-ID: 2342
GSM A-I/F DTAP - Location Updating Request

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