Hello Sukchan,
I already go out from the lab today, but Monday I will made this test that
you ask for.
Have a great day there.
Romeu Medeiros
Em sáb, 13 de jul de 2019 às 21:01, Sukchan Lee <acetcom(a)gmail.com>
escreveu:
Hi Romeu,
I'm really appreciate testing CSFB even though I have never been testing
this feature in the lab.
BTW, I have one question. If we want to remove Security-Related IE in UE
Context Modification Request,
I think NextEPC should not derive kENB in Extended Service Request handler.
Nevertheless, I've merged your pull request since it is properly worked at
first. ^^;
If your lab is available, could you test one more by removing the
following code?
In src/mme/emm-handler.c
586 if (SECURITY_CONTEXT_IS_VALID(mme_ue)) {
587 mme_kdf_enb(mme_ue->kasme, mme_ue->ul_count.i32, mme_ue->kenb);
588 mme_kdf_nh(mme_ue->kasme, mme_ue->kenb, mme_ue->nh);
589 mme_ue->nhcc = 1;
590 }
Just test it. If my expectation is true, I will fix all other things.
Thank you for your GREAT job!
Best regards,
Sukchan
On Sun, Jul 14, 2019 at 8:04 AM Romeu Medeiros <medeiros(a)medeiros.eng.br>
wrote:
> Hello Sukchan,
>
> Now after remove this everything run correctly.
>
> [image: image.png]
>
> I will made the change more beatiful and pull the modification to the git
> to you aprove.
>
> Thanks
>
> Romeu Medeiros
>
> On Sat, Jul 13, 2019 at 6:50 PM Romeu Medeiros <medeiros(a)medeiros.eng.br>
> wrote:
>
>> I found this in the 3GPP documentations [1]:
>>
>> [image: image.png]
>>
>> I will change the code to send only the CSFallback indicator in this
>> case to see if can solve the problem.
>>
>> Thanks
>>
>> Romeu Medeiros
>>
>> 1.
>>
https://www.etsi.org/deliver/etsi_ts/136400_136499/136413/09.10.00_60/ts_13…
>>
>> On Sat, Jul 13, 2019 at 6:35 PM Romeu Medeiros <medeiros(a)medeiros.eng.br>
>> wrote:
>>
>>> Hello Sukchan and friends.
>>>
>>> I'm trying to use the CSFB in test lab, and every time that nextepc
>>> send the UEContextModificationRequest, the UE respond with an
>>> UEContextModificationFaliure [ Protocol-cause=semantic-error ].
>>>
>>> [image: image.png]
>>>
>>> I'm looking why I'm getting this. Someone have any idea?
>>>
>>> Thanks
>>>
>>> Romeu Medeiros
>>>
>>> On Thu, Jul 11, 2019 at 12:15 PM Sukchan Lee <acetcom(a)gmail.com>
wrote:
>>>
>>>> Dear Osmocom & NextEPC Community,
>>>>
>>>> Today I've added CS Fallback and released NextEPC v0.5.0
>>>>
>>>> So, I'd just like to test this part with Osmocom project, but it
seems
>>>> to be a difficult task. The reason is why I have little knowledge about
>>>> 2G/3G. Nevertheless, I will try to do it
>>>>
>>>> BTW, I don't know if there is anyone who wants to integrate this big
>>>> thing.
>>>> Even though I'm not sure if this will help, but let me introduce the
>>>> configuration of the NextEPC.
>>>>
>>>> To use SGsAP, change the mme.conf as follows:
>>>>
>>>> #
>>>> # <sgsap>
>>>> #
>>>> # o Single MSC/VLR
>>>> # sgsap:
>>>> # addr: 127.0.0.2
>>>> # plmn_id:
>>>> # mcc: 001
>>>> # mnc: 01
>>>> # tac: 4130
>>>> # lac: 43690
>>>> #
>>>> # o Multiple MSC/VLR
>>>> # sgsap:
>>>> # - addr: 127.0.0.2
>>>> # plmn_id:
>>>> # mcc: 001
>>>> # mnc: 01
>>>> # tac: 4131
>>>> # lac: 43692
>>>> # - addr
>>>> # - 127.0.0.3
>>>> # - fe80::2%lo0
>>>> # plmn_id:
>>>> # mcc: 001
>>>> # mnc: 01
>>>> # tac: 4132
>>>> # lac: 43692
>>>> # - name:
msc.open5gs.org
>>>> # plmn_id:
>>>> # mcc: 001
>>>> # mnc: 01
>>>> # tac: 4133
>>>> # lac: 43693
>>>> #
>>>>
>>>> FYI, I also attach the pcap that I run with nextepc simulator as below.
>>>>
>>>> $ ./tests/testcsfb
>>>> mo-idle-test : SUCCESS
>>>> mt-idle-test : SUCCESS
>>>> mo-active-test : SUCCESS
>>>> mt-active-test : SUCCESS
>>>> All tests passed.
>>>>
>>>> Feel free to raise any questions about this things.
>>>>
>>>> Best Regards,
>>>> Sukchan
>>>>
>>>>