[srslte-users] Problem in srsLTE with ZMQ driver

Thu May 7 07:54:14 UTC 2020

Hi all,

I am trying to use ZMQ driver-based srsLTE.

I am following this: https://docs.srslte.com/en/latest/app_notes/source/zeromq/source/#introduction

However, looks like it does not work well… Ping does not work because UE does not have an IP address..

Here is the UE’s log

======
Reading configuration file /users/wkim/.config/srslte/ue.conf…

Built in Release mode using commit e3e384821 on branch HEAD.

Opening 1 channels in RF device=zmq with args=tx_port=tcp://*:2001,rx_port=tcp://localhost:2000,id=ue,base_srate=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)
^CStopping ..
Couldn't stop after 5s. Forcing exit.
Killed
wkim at k8s-2:~/workspace/srsLTE/build$
wkim at k8s-2:~/workspace/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 /users/wkim/.config/srslte/ue.conf…

Built in Release mode using commit e3e384821 on branch HEAD.

Opening 1 channels in RF device=zmq with args=tx_port=tcp://*:2001,rx_port=tcp://localhost:2000,id=ue,base_srate=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=39, ra-rnti=0x2
Random Access Transmission: seq=24, ra-rnti=0x2
Random Access Transmission: seq=27, ra-rnti=0x2
Random Access Transmission: seq=28, ra-rnti=0x2
Random Access Transmission: seq=42, ra-rnti=0x2
Random Access Transmission: seq=36, ra-rnti=0x2
Random Access Transmission: seq=8, ra-rnti=0x2
Random Access Transmission: seq=37, ra-rnti=0x2
Random Access Transmission: seq=24, ra-rnti=0x2
Random Access Transmission: seq=50, 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=30, ra-rnti=0x2
Random Access Complete. c-rnti=0x51, ta=0
RRC Connected
Scheduling request failed: releasing RRC connection…
Random Access Transmission: seq=7, ra-rnti=0x2
Random Access Transmission: seq=27, ra-rnti=0x2
Random Access Transmission: seq=13, ra-rnti=0x2
Random Access Transmission: seq=1, ra-rnti=0x2
Random Access Transmission: seq=43, ra-rnti=0x2
Random Access Transmission: seq=41, ra-rnti=0x2
Random Access Transmission: seq=5, ra-rnti=0x2
Random Access Transmission: seq=45, ra-rnti=0x2
Random Access Transmission: seq=47, ra-rnti=0x2
Random Access Transmission: seq=50, ra-rnti=0x2
Warning: Detected Radio-Link Failure
===

And this is eNB’s log
===
--- Software Radio Systems LTE eNodeB —

Reading configuration file /users/wkim/.config/srslte/enb.conf…

Built in Release mode using commit e3e384821 on branch HEAD.

Opening 1 channels in RF device=zmq with args=fail_on_disconnect=true,tx_port=tcp://*:2000,rx_port=tcp://localhost: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
Warning: Failed to create thread with real-time priority. Creating it with normal priority: Cannot allocate memory
Warning: Failed to create thread with real-time priority. Creating it with normal priority: Cannot allocate memory
Warning: Failed to create thread with real-time priority. Creating it with normal priority: Cannot allocate memory
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
t
Enter t to stop trace.
RACH: tti=361, preamble=36, offset=0, temp_crnti=0x46
Disconnecting rnti=0x46.
RACH: tti=3301, preamble=39, offset=0, temp_crnti=0x47
Disconnecting rnti=0x47.
RACH: tti=3391, preamble=24, offset=0, temp_crnti=0x48
Disconnecting rnti=0x48.
RACH: tti=3481, preamble=27, offset=0, temp_crnti=0x49

------DL--------------------------------UL——————————————————
rnti cqi ri mcs brate ok nok (%) snr phr mcs brate ok nok (%) bsr
  49 0.10 0 0.0 0 0 0 0% 0 30.0 9.0 737 1 7 88% 0.0
Disconnecting rnti=0x49.
RACH: tti=3571, preamble=28, offset=0, temp_crnti=0x4a
Disconnecting rnti=0x4a.
RACH: tti=3661, preamble=42, offset=0, temp_crnti=0x4b
Disconnecting rnti=0x4b.
RACH: tti=3751, preamble=36, offset=0, temp_crnti=0x4c
Disconnecting rnti=0x4c.
RACH: tti=3841, preamble=8, offset=0, temp_crnti=0x4d
Disconnecting rnti=0x4d.
RACH: tti=3931, preamble=37, offset=0, temp_crnti=0x4e
Disconnecting rnti=0x4e.
RACH: tti=4021, preamble=24, offset=0, temp_crnti=0x4f
Disconnecting rnti=0x4f.
RACH: tti=4111, preamble=50, offset=0, temp_crnti=0x50
Disconnecting rnti=0x50.
RACH: tti=7701, preamble=30, offset=0, temp_crnti=0x51
Disconnecting rnti=0x51.
RACH: tti=381, preamble=7, offset=0, temp_crnti=0x52
Disconnecting rnti=0x52.
RACH: tti=471, preamble=27, offset=0, temp_crnti=0x53
Disconnecting rnti=0x53.
RACH: tti=561, preamble=13, offset=0, temp_crnti=0x54
Disconnecting rnti=0x54.
RACH: tti=651, preamble=1, offset=0, temp_crnti=0x55
Disconnecting rnti=0x55.
RACH: tti=741, preamble=43, offset=0, temp_crnti=0x56
Disconnecting rnti=0x56.
RACH: tti=831, preamble=41, offset=0, temp_crnti=0x57
  57 0.10 0 0.0 0 0 0 0% 0 30.0 5.2 1.5k 1 3 75% 0.0
Disconnecting rnti=0x57.
RACH: tti=921, preamble=5, offset=0, temp_crnti=0x58
Disconnecting rnti=0x58.
RACH: tti=1011, preamble=45, offset=0, temp_crnti=0x59
Disconnecting rnti=0x59.
RACH: tti=1101, preamble=47, offset=0, temp_crnti=0x5a
Disconnecting rnti=0x5a.
RACH: tti=1191, preamble=50, offset=0, temp_crnti=0x5b
Disconnecting rnti=0x5b.
===

Is it correct? If not, could you teach me how to fix it?

Thanks all!
Woojoong.
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