Change in pysim[master]: sysmoISIM-SJA2: Add support for programming EF.ePDGSelection (ePDG Se...

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herlesupreeth gerrit-no-reply at lists.osmocom.org
Wed Dec 23 09:07:06 UTC 2020


herlesupreeth has posted comments on this change. ( https://gerrit.osmocom.org/c/pysim/+/21850 )

Change subject: sysmoISIM-SJA2: Add support for programming EF.ePDGSelection (ePDG Selection Information)
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Patch Set 2:

> Patch Set 2:
> 
> my question is: should we always do this unconditionally by default? If so, please provide a quick rationale in the commit log. thanks.

I don't think its needs to be set unconditionally to that default (i didn't find anything in the spec for that) but in order for ME to force select/query the ePDG in HPLMN it would be necessary

This is could be expanded in future with option to configure different PLMNs rather than just HPLMN

In the spec TS 31.102 version 13.4.0, it states below:

Requirement: service n°106 and n°107 are "available" in the USIM Service Table.

The ME performs the reading procedure with EFePDGSelection. The UE then shall use the ePDG selection information present in the EFePDGSelection toperform the ePDG selection procedure as defined in 3GPP TS 24.302.

If EFePDGId and EFePDGSelection are empty, the UE shall consider "ePDG configuration information is configured but empty", then the UE shall follow the procedure specified in the "Selection of the ePDG" UE procedure as defined in 3GPP TS 24.302

let me know your opinion on this, i will update the commit log accordingly


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Gerrit-Project: pysim
Gerrit-Branch: master
Gerrit-Change-Id: I92f3f813afa41ae497ebc0dc2ca73da810f82364
Gerrit-Change-Number: 21850
Gerrit-PatchSet: 2
Gerrit-Owner: herlesupreeth <herlesupreeth at gmail.com>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-Comment-Date: Wed, 23 Dec 2020 09:07:06 +0000
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