[srslte-users] ZeroMQ failure to connect.

Wed May 6 18:44:55 UTC 2020

Robert, Kevin,

thanks for confirming that this indeed fixes the issue.

We'll announce a official bug-fix release shortly.

Cheers
Andre

On 6/5/20 18:31, Reay, Robert wrote:
> Thank you Andre,
> 
> On this branch both run_lte.sh and manual testing as documented on the ZeroMQ App Note page work as expected.
> 
> -rr
> 
> -----Original Message-----
> From: Andre Puschmann <andre.puschmann at softwareradiosystems.com> 
> Sent: Wednesday, May 6, 2020 11:57 AM
> To: Igor Kim <igor.kim at htwk-leipzig.de>; Kevin Heathley <kevin.heathley at gmail.com>
> Cc: Reay, Robert <rreay at vanteon.com>; srslte-users <srslte-users at lists.softwareradiosystems.com>
> Subject: Re: [srslte-users] ZeroMQ failure to connect.
> 
> Hey guys,
> 
> apparently we've introduced a late bug where scheduling resources have not been allocated properly. This has only affected some conigs, like the default one unfortunately.
> 
> We've pushed a fix to [1]. Can you please check if that solves the attach issue?
> 
> Thanks
> Andre
> 
> 
> [1] https://github.com/srsLTE/srsLTE/tree/sr_config_regression
> 
> 
> On 6/5/20 17:51, Igor Kim wrote:
>> Hi Kevin,
>>
>> I also encountered issues with RAR on my MacBook Pro in VMWare, so the 
>> UE connected only after 3-4 attempts, on the server PC in Hyper-V it 
>> runs smoothly.
>>
>> However, I am not sure that the cause of the issues is the same, 
>> because looks like you have plenty of computational resources.
>>
>> Attached you find archived content of ~/.config/srslte folder. Apart 
>> from configuration files I didn’t change anything.
>>
>> The run commands from the srsLTE build folder with those configs are:
>>
>> sudo ip netns add ue1
>>
>> # in terminal 0
>> sudo ./srsepc/src/srsepc
>>
>> # in terminal 1
>> sudo ./srsenb/src/srsenb
>>
>> # in terminal 2
>> sudo ./srsue/src/srsue
>>
>>
>>
>>
>> ------
>> Igor Kim (M.Eng)
>> Wissenschaftlicher Mitarbeiter
>> Fakultät Digitale Transformation
>> Hochschule für Technik, Wirtschaft und Kultur Leipzig
>>
>> Zschochersche straße 69, 04229 Leipzig
>> +49 341 3062-555 (Tel.)
>> E-mail: igor.kim at htwk-leipzig.de
>> On 6. May 2020, 17:14 +0200, Kevin Heathley 
>> <kevin.heathley at gmail.com>,
>> wrote:
>>
>>     Hi Igor, I am unable to get this working in AWS and GCP. Running
>>     Ubuntu 18.04 on 8 vCPU and 32 GB RAM. I must be doing something
>>     wrong. Have not tried VMware yet.
>>
>>
>>     After compiling, did you install default config files in /etc or did
>>     you create your own? I installed through "srslte_install_configs.sh
>>     service".
>>
>>
>>     Looking at the UE side, it seems to end up in an endless loop as
>>     there is no RAR being sent from eNB.
>>
>>
>>     ubuntu at ip-172-31-22-211:~/srsLTE/build$ sudo ./srsue/src/srsue
>>     --rf.device_name=zmq
>>     --rf.device_args="tx_port=tcp://*:2001,rx_port=tcp://localhost:2000,id=ue,base_srate=23.04e6"
>>     --gw.netns=ue1 --phy.nof_phy_threads=1
>>
>>     Reading configuration file /etc/srslte/ue.conf...
>>
>>
>>     Built in Release mode using commit e3e384821 on branch master.
>>
>>
>>     Opening 1 channels in RF device=zmq with
>>     
>> args=tx_port=tcp://*:2001,rx_port=tcp://localhost:2000,id=ue,base_srat
>> e=23.04e6
>>
>>     CHx base_srate=23.04e6
>>
>>     CHx id=ue
>>
>>     Current sample rate is 1.92 MHz with a base rate of 23.04 MHz (x12
>>     decimation)
>>
>>     CH0 rx_port=tcp://localhost:2000
>>
>>     CH0 tx_port=tcp://*:2001
>>
>>     Waiting PHY to initialize ... done!
>>
>>     Attaching UE...
>>
>>     Current sample rate is 1.92 MHz with a base rate of 23.04 MHz (x12
>>     decimation)
>>
>>     Current sample rate is 1.92 MHz with a base rate of 23.04 MHz (x12
>>     decimation)
>>
>>     .
>>
>>     Found Cell: Mode=FDD, PCI=1, PRB=50, Ports=1, CFO=-0.2 KHz
>>
>>     Current sample rate is 11.52 MHz with a base rate of 23.04 MHz (x2
>>     decimation)
>>
>>     Current sample rate is 11.52 MHz with a base rate of 23.04 MHz (x2
>>     decimation)
>>
>>     Found PLMN: Id=00101, TAC=7
>>
>>     Random Access Transmission: seq=36, ra-rnti=0x2
>>
>>     Random Access Complete.  c-rnti=0x46, ta=0
>>
>>     RRC Connected
>>
>>     Scheduling request failed: releasing RRC connection...
>>
>>     Random Access Transmission: seq=6, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=27, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=2, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=26, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=37, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=10, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=24, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=19, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=46, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=26, ra-rnti=0x2
>>
>>     Warning: Detected Radio-Link Failure
>>
>>     RRC IDLE
>>
>>     Current sample rate is 1.92 MHz with a base rate of 23.04 MHz (x12
>>     decimation)
>>
>>     Current sample rate is 1.92 MHz with a base rate of 23.04 MHz (x12
>>     decimation)
>>
>>     .
>>
>>     Found Cell: Mode=FDD, PCI=1, PRB=50, Ports=1, CFO=-0.2 KHz
>>
>>     Current sample rate is 11.52 MHz with a base rate of 23.04 MHz (x2
>>     decimation)
>>
>>     Current sample rate is 11.52 MHz with a base rate of 23.04 MHz (x2
>>     decimation)
>>
>>     Found PLMN: Id=00101, TAC=7
>>
>>     Random Access Transmission: seq=1, ra-rnti=0x2
>>
>>     Random Access Complete.  c-rnti=0x51, ta=0
>>
>>     RRC Connected
>>
>>     Scheduling request failed: releasing RRC connection...
>>
>>     Random Access Transmission: seq=34, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=28, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=35, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=29, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=31, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=16, ra-rnti=0x2
>>
>>     Random Access Transmission: seq=3, ra-rnti=0x2
>>
>>     < --------- the above pattern repeats over and over (RRC Connect /
>>     Idle) ---------->
>>
>>
>>     On the eNB it looks like this:
>>
>>
>>     ubuntu at ip-172-31-22-211:~/srsLTE/build$ sudo ./srsenb/src/srsenb
>>     --rf.device_name=zmq
>>     --rf.device_args="fail_on_disconnect=true,tx_port=tcp://*:2000,rx_port=tcp://localhost:2001,id=enb,base_srate=23.04e6"
>>     --expert.nof_phy_threads=1
>>
>>     --- Software Radio Systems LTE eNodeB ---
>>
>>
>>     Reading configuration file /etc/srslte/enb.conf...
>>
>>
>>     Built in Release mode using commit e3e384821 on branch master.
>>
>>
>>     Opening 1 channels in RF device=zmq with
>>     
>> args=fail_on_disconnect=true,tx_port=tcp://*:2000,rx_port=tcp://localh
>> ost:2001,id=enb,base_srate=23.04e6
>>
>>     CHx base_srate=23.04e6
>>
>>     CHx id=enb
>>
>>     Current sample rate is 1.92 MHz with a base rate of 23.04 MHz (x12
>>     decimation)
>>
>>     CH0 rx_port=tcp://localhost:2001
>>
>>     CH0 tx_port=tcp://*:2000
>>
>>     CH0 fail_on_disconnect=true
>>
>>     Current sample rate is 11.52 MHz with a base rate of 23.04 MHz (x2
>>     decimation)
>>
>>     Current sample rate is 11.52 MHz with a base rate of 23.04 MHz (x2
>>     decimation)
>>
>>     Setting frequency: DL=2685.0 Mhz, UL=2565.0 MHz for cc_idx=0
>>
>>
>>     ==== eNodeB started ===
>>
>>     Type <t> to view trace
>>
>>     RACH: tti=3561, preamble=36, offset=0, temp_crnti=0x46
>>
>>     Disconnecting rnti=0x46.
>>
>>     RACH: tti=6461, preamble=6, offset=0, temp_crnti=0x47
>>
>>     Disconnecting rnti=0x47.
>>
>>     RACH: tti=6551, preamble=27, offset=0, temp_crnti=0x48
>>
>>     Disconnecting rnti=0x48.
>>
>>     RACH: tti=6641, preamble=2, offset=0, temp_crnti=0x49
>>
>>     RACH: tti=6661, preamble=26, offset=0, temp_crnti=0x4a
>>
>>     SCHED: Could not transmit RAR within the window (RA TTI=6641,
>>     Window=10, Now=6672)
>>
>>     Disconnecting rnti=0x49.
>>
>>     Disconnecting rnti=0x4a.
>>
>>     RACH: tti=6751, preamble=37, offset=0, temp_crnti=0x4b
>>
>>     Disconnecting rnti=0x4b.
>>
>>     RACH: tti=6841, preamble=10, offset=0, temp_crnti=0x4c
>>
>>     Disconnecting rnti=0x4c.
>>
>>     RACH: tti=6931, preamble=24, offset=0, temp_crnti=0x4d
>>
>>     Disconnecting rnti=0x4d.
>>
>>     RACH: tti=7021, preamble=19, offset=0, temp_crnti=0x4e
>>
>>     <---------- the above repeats over and over --------->
>>
> 
> 
> --
> Andre Puschmann
> 
> Software Radio Systems (SRS)
> http://www.softwareradiosystems.com
> 
> PGP/GnuPG key: 6C42AB31
> fingerprint: 137A AE49 785B A445 257C 8AD7 D877 A498 6C42 AB31
> 

-- 
Andre Puschmann

Software Radio Systems (SRS)
http://www.softwareradiosystems.com

PGP/GnuPG key: 6C42AB31
fingerprint: 137A AE49 785B A445 257C 8AD7 D877 A498 6C42 AB31