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

[Bouras Abdennour]

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 <https://www.dropbox.com/s/yph437577cim0ho/enb.pcap?dl=0>




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
> >
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.srsran.com/pipermail/srsran-users/attachments/20190212/72a04dab/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: enb.log
Type: text/x-log
Size: 22445 bytes
Desc: not available
URL: <https://lists.srsran.com/pipermail/srsran-users/attachments/20190212/72a04dab/attachment.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: epc.log
Type: text/x-log
Size: 45552 bytes
Desc: not available
URL: <https://lists.srsran.com/pipermail/srsran-users/attachments/20190212/72a04dab/attachment-0001.bin>