[srslte-users] Need help failed to get attach a COTS UE with LimeSDR-mini

[Pedro Alvarez]

Hi Bouras,

Could you send the enb and the epc pcap?

Regards,
Pedro

On Thu, Feb 14, 2019 at 11:36 AM Bouras Abdennour
<bourascom.dz at gmail.com> wrote:
>
> Dear Andre
>
>     Thank you so much for your reply. The problem was solved, my phone successfully get attached with srsLTE and data works fine !! I found out I have to position the phone and antennas just right, decreasing n_prb from 50 to 25 PRBs and also enabled performance CPU governor.
>
>     However, I have another little nasty issue : UE connection is semi-consistent and don't last for long duration. The UE disconnects and re-establish normally, but after some amount of time, UE context is released completely. Kindly find details in attached files.
>
> Please any tips to get more reliable and stable connection ?
>
> Note :
> I'm running out-off-the-box without using external OCXO or any extra RF front-end installation.
>
> Best Regards
>
> Abdenour Bouras
>
> enb.pcap
>
>
>
>
> On Mon, Feb 11, 2019 at 4:12 PM Andre Puschmann <andre.puschmann at softwareradiosystems.com> wrote:
>>
>> Hey,
>> you have lots of lates on the enb. So likely the UE doesn't attempt to
>> attach. Reduce cell bandwidth, enable performance CPU governor or try a
>> stronger computer.
>>
>> Cheers
>> Andre
>>
>> On 10/2/19 13:35, Bouras Abdennour wrote:
>> > Hi
>> >
>> >    I'm trying to get a COTS UE -OppoR7sf to attach with srsLTE (build
>> > from commit 5c088d75 on branch master).
>> > Using a LimeSDR-mini HW v1.1 without duplexer.
>> >
>> > USIM programmed using SIM Personalize tools GRSIMwrite.exe : imsi =
>> > 208920100001100; Ki = 6874736969202073796D4B2079650A73; OPC =
>> > 777F0406A78D9598B0330D63F4C52199; mcc = 208; mnc = 92, Authentication
>> > algorithme used = milenage
>> >
>> > UE information added in user-db.csv :
>> >
>> > # Note: Lines starting by '#' are ignored and will be
>> > overwritten
>> > ue2,001010123456780,00112233445566778899aabbccddeeff,opc,63bfa50ee6523365ff14c1f45f88737d,8000,000000001234,7
>> > ue1,001010123456789,00112233445566778899aabbccddeeff,opc,63bfa50ee6523365ff14c1f45f88737d,9001,000000001234,7
>> > ue3,208920100001100,6874736969202073796d4b2079650a73,opc,777f0406a78d9598b0330d63f4c52199,8001,000000001234,7
>> >
>> >
>> > Phone can see the network. But no any transaction happen with srsenb ie
>> > : Received Attach Request, PDN Connectivity Request ..etc. Kindly find
>> > enb and epc logs attached.
>> >
>> > Best Regards
>> >
>> > Abdenour Bouras
>> >
>> > _______________________________________________
>> > srslte-users mailing list
>> > srslte-users at lists.softwareradiosystems.com
>> > http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>> >
>>
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