[srslte-users] zmq driver help
Hữu Nghĩa Nguyễn
nguyenhuunghia.gtvt at gmail.com
Thu Jul 18 14:43:17 UTC 2019
Dear Mirko, Xavier,
I face the same problem when trying ZeroMQ to communicate between UE and eNB on the same machine.
I tried all the parameters as cited in the your emails as well as in the pdf guide.
But no luck. Always get the message "Warning: Detected Radio-Link Failure". Please find its execution log below.
Have you any detailed information to resolve the problem ? Could you share your ue.conf and enb.conf files ?
By the way, do you know how to connect multiple UEs to eNB by using ZeroMQ?
Thank you in advance.
Best regards,
Nghia Nguyen.
=======================================================
Reading configuration file ue.conf...
Built in Debug mode using 19.3.0.
--- Software Radio Systems LTE UE ---
Opening 1 RF devices with 1 RF channels...
Using base rate=1.92e6
Using rx_port=tcp://localhost:5555
Using tx_port=tcp://*:5554
Using ID=ue
Current sample rate is 1.92 MHz with a base rate of 1.92 MHz (x1 decimation)
Warning burst preamble is not calibrated for device zmq. Set a value manually
Waiting PHY to initialize...
...
Attaching UE...
Searching cell in DL EARFCN=3400, f_dl=2685.0 MHz, f_ul=2565.0 MHz
Current sample rate is 1.92 MHz with a base rate of 1.92 MHz (x1 decimation)
Current sample rate is 1.92 MHz with a base rate of 1.92 MHz (x1 decimation)
Warning TX/RX time offset has not been calibrated for device zmq. Set a value manually
.
Found Cell: Mode=FDD, PCI=1, PRB=6, Ports=1, CFO=0.0 KHz
Current sample rate is 1.92 MHz with a base rate of 1.92 MHz (x1 decimation)
Current sample rate is 1.92 MHz with a base rate of 1.92 MHz (x1 decimation)
Warning TX/RX time offset has not been calibrated for device zmq. Set a value manually
Found PLMN: Id=00101, TAC=7
Random Access Transmission: seq=29, ra-rnti=0x2
Random Access Transmission: seq=32, ra-rnti=0x2
Random Access Transmission: seq=12, ra-rnti=0x2
Random Access Transmission: seq=22, ra-rnti=0x2
Random Access Transmission: seq=4, ra-rnti=0x2
Random Access Transmission: seq=3, ra-rnti=0x2
Random Access Transmission: seq=1, ra-rnti=0x2
Random Access Transmission: seq=36, ra-rnti=0x2
Random Access Transmission: seq=11, ra-rnti=0x2
Random Access Transmission: seq=24, ra-rnti=0x2
Warning: Detected Radio-Link Failure
Random Access Transmission: seq=46, ra-rnti=0x2
Random Access Transmission: seq=12, ra-rnti=0x2
Random Access Transmission: seq=42, ra-rnti=0x2
Random Access Transmission: seq=34, ra-rnti=0x2
Random Access Transmission: seq=19, ra-rnti=0x2
Random Access Transmission: seq=32, ra-rnti=0x2
Random Access Transmission: seq=36, ra-rnti=0x2
Random Access Transmission: seq=11, ra-rnti=0x2
Random Access Transmission: seq=20, ra-rnti=0x2
Random Access Transmission: seq=45, ra-rnti=0x2
Warning: Detected Radio-Link Failure
Random Access Transmission: seq=42, ra-rnti=0x2
Random Access Transmission: seq=30, ra-rnti=0x2
Random Access Transmission: seq=16, ra-rnti=0x2
Random Access Transmission: seq=31, ra-rnti=0x2
Random Access Transmission: seq=28, ra-rnti=0x2
Random Access Transmission: seq=20, ra-rnti=0x2
Random Access Transmission: seq=34, ra-rnti=0x2
Random Access Transmission: seq=30, ra-rnti=0x2
Random Access Transmission: seq=33, ra-rnti=0x2
Random Access Transmission: seq=21, ra-rnti=0x2
Warning: Detected Radio-Link Failure
^CStopping srsUE... Press Ctrl+C 9 more times to force stop
Saving MAC PCAP file
--- exiting ---
=======================================================
> Date: Thu, 18 Jul 2019 12:36:17 +0200
> From: Xavier Arteaga <xavier at softwareradiosystems.com>
> To: Mirko Kovacevic <northmirko at gmail.com>
> Cc: srslte-users <srslte-users at lists.softwareradiosystems.com>
> Subject: Re: [srslte-users] zmq driver help
> Message-ID:
> <CAO5ZCFav8Yw8R_RrAti7SrYd5yD6vBUQv3r7RkA_eSO5oy5JoA at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> hi Mirko.
> It is great to read about your success running srsLTE with ZMQ.
>
> Thanks,
> Xavier
>
> On Thu, 18 Jul 2019 at 11:25, Mirko Kovacevic <northmirko at gmail.com> wrote:
>
>> Hi, Xavier,
>>
>> thank for you answer.
>>
>> Good news, I managed to set up all properly,
>> zmq driver is a great feature!!!!
>> I attached some screenshots.
>> Plan to integrate this with commercial EPC, let you know results.
>>
>> Also put:
>>
>> *--rf.time_adv_nsamples=20* #earlier I put much bigger values,
>> over-estimate delay expectation
>>
>>
>> [image: 2019-07-15_23-19-04.png]
>> [image: 2019-07-15_23-18-17.png]
>> [image: 2019-07-15_23-05-19.png]
>>
>> [image: 2019-07-15_23-19-33.png]
>>
>>
>>
>> On Tue, Jul 16, 2019 at 10:25 AM Xavier Arteaga <
>> xavier at softwareradiosystems.com> wrote:
>>
>>> Hi Mirko,
>>> It is great to read your interest in ZMQ.
>>>
>>> The UE and the eNodeb have a number of timers specified by the 3GPP. Some
>>> of these timers are based on system timers and not in RF-based timers. When
>>> ZMQ between two computers is used, the baseband throughput is so low that
>>> the latency sky-rockets and timers expire easily. This cause the UE to
>>> frequently fail to attach.
>>>
>>> You can set these timers to their maximum values in sib.conf:
>>> ue_timers_and_constants =
>>> {
>>> t300 = 2000; // in ms
>>> t301 = 2000; // in ms
>>> t310 = 2000; // in ms
>>> n310 = 20;
>>> t311 = 30000; // in ms
>>> n311 = 10;
>>> };
>>>
>>> I highly recommend using the srsue and srsenb in the same machine (no
>>> virtual) as an initial step.
>>>
>>> Also, we prepared the attached guide. It will be published in a few days
>>> but it would be great getting some feedback on it.
>>>
>>> Many thanks,
>>> Xavier
>>>
>>> On Tue, 16 Jul 2019 at 09:52, Mirko Kovacevic <northmirko at gmail.com>
>>> wrote:
>>>
>>>> Hi there, Dear srsLTE
>>>>
>>>>
>>>> I'm being delighted with latest release, especially with new feature
>>>> Fake RF with zmq.
>>>> Guys,
>>>> you done fantastic job,
>>>> planing to contribute my time to project.
>>>>
>>>> After several days of code review and mailing list traversing, I tried
>>>> srsUE/srsENB with zmq driver installed on two separate VMs, each with 2x
>>>> CPU, and 2048 MB of RAM, host machine 16GB / 8 CPU.
>>>> I made regression tests on "make test zmq_driver" but test is not
>>>> passing all the time.
>>>> Maybe VMs are still not a desirable environment to execute such kind of
>>>> realtime tasks or something still need to be done to VM to perform better.
>>>>
>>>> Nevertheless,
>>>> UE managed to decode BCCH, read the cell, sent message on PRACH.
>>>> After that I only get Radio Link failures caused by tx time offset in
>>>> transmission.
>>>>
>>>> I tried to play with options:
>>>> ---------------
>>>> --rf.time_adv_nsamples=value
>>>> -------------------
>>>> Put base_rate to
>>>>
>>>> base rate=1.92e6
>>>> ------------
>>>>
>>>> Changed
>>>> n_prb =6 (1.4Mhz bandwidth)
>>>> ---------------
>>>>
>>>> but no progress at all.
>>>>
>>>>
>>>> Do you have idea what else could be done when dealing with zmq driver ?
>>>> How to determine tx time offset when using zmq ?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> *Puno pozdrava,Mirko Kovacevic*
>>>>
>>>>
>>>> _______________________________________________
>>>> srslte-users mailing list
>>>> srslte-users at lists.softwareradiosystems.com
>>>> http://www.softwareradiosystems.com/mailman/listinfo/srslte-users
>>>>
>>>
>>
>> --
>>
>> *Puno pozdrava,Mirko Kovacevic*
>>
>>
>>
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