[srsran-users] Detected Radio-Link Failure at intervals

Fri Sep 23 15:46:30 UTC 2022

Dear all,
I am trying to build LTE connection between USRP N321 and USRP B210 (ue) and firstly I try to connect from B210 side only with one RF antenna but I received "detected Radio Link failure" and RRC was set IDLE. After that I used 2 antennas with B210 and now I receive the same error but at intervals. I attach also the config, log and output of ue. I use UHD version 3.15, machine 1 linux 18.05, machine 2 (B210) linux 20.04. Can someone help me to solve this problem?
Thanks

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Opening 2 channels in RF device=default with args=default
Supported RF device list: UHD file
Trying to open RF device 'UHD'
[INFO] [UHD] linux; GNU C++ version 9.2.1 20200304; Boost_107100; UHD_3.15.0.0-2build5
[INFO] [LOGGING] Fastpath logging disabled at runtime.
Opening USRP channels=2, args: type=b200,master_clock_rate=23.04e6
[INFO] [UHD RF] RF UHD Generic instance constructed
[INFO] [B200] Detected Device: B210
[INFO] [B200] Operating over USB 3.
[INFO] [B200] Initialize CODEC control...
[INFO] [B200] Initialize Radio control...
[INFO] [B200] Performing register loopback test... 
[INFO] [B200] Register loopback test passed
[INFO] [B200] Performing register loopback test... 
[INFO] [B200] Register loopback test passed
[INFO] [B200] Asking for clock rate 23.040000 MHz... 
[INFO] [B200] Actually got clock rate 23.040000 MHz.
[INFO] [MULTI_USRP]     1) catch time transition at pps edge
[INFO] [MULTI_USRP]     2) set times next pps (synchronously)
RF device 'UHD' successfully opened
Waiting PHY to initialize ... done!
Attaching UE...
.
.
Found Cell:  Mode=FDD, PCI=93, PRB=100, Ports=4, CP=Normal, CFO=-6.3 KHz
RF status: O=3, U=0, L=0
.
Found Cell:  Mode=FDD, PCI=1, PRB=50, Ports=2, CP=Normal, CFO=-4.6 KHz
RF status: O=3, U=0, L=0
RF status: O=3, U=0, L=0
Found PLMN:  Id=00101, TAC=7
Random Access Transmission: seq=17, tti=7541, ra-rnti=0x2
RRC Connected
Random Access Complete.     c-rnti=0x49, ta=7
Network attach successful. IP: 172.16.0.3
Software Radio Systems RAN (srsRAN) 23/9/2022 15:24:37 TZ:0
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:529: Reserved codebook index (nof_tb=2, pinfo=3)
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:592: Configuring MIMO PMI
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=16, tti=8281, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x4a, ta=7
Warning: Detected Radio-Link Failure
.
Found Cell:  Mode=FDD, PCI=93, PRB=100, Ports=4, CP=Normal, CFO=-5.9 KHz
RF status: O=6, U=0, L=0
.
Found Cell:  Mode=FDD, PCI=1, PRB=50, Ports=2, CP=Normal, CFO=-5.1 KHz
RF status: O=3, U=0, L=0
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=38, tti=9171, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x4b, ta=7
RF status: O=3, U=0, L=0
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=22, tti=1651, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x4c, ta=7
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=8, tti=1171, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x4d, ta=7
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:529: Reserved codebook index (nof_tb=2, pinfo=6)
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:592: Configuring MIMO PMI
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=36, tti=7711, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x4e, ta=7
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=27, tti=9601, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x4f, ta=7
RF status: O=0, U=1, L=0
Warning: Detected Radio-Link Failure
.
Found Cell:  Mode=FDD, PCI=1, PRB=50, Ports=2, CP=Normal, CFO=-5.3 KHz
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=49, tti=3541, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x50, ta=7
RF status: O=6, U=0, L=0
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=25, tti=2921, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x51, ta=7
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=17, tti=5941, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x52, ta=7
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=0, tti=4031, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x53, ta=7
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:522: Not implemented codebook index (nof_tb=2 (1/1), pinfo=2)
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:592: Configuring MIMO PMI
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:199: Invalid RBG subset=3 for nof_prb=50 where P=3
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:641: Configuring resource allocation
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:529: Reserved codebook index (nof_tb=2, pinfo=4)
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:592: Configuring MIMO PMI
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:522: Not implemented codebook index (nof_tb=2 (1/1), pinfo=2)
/home/bora/srsRAN/lib/src/phy/phch/ra_dl.c:592: Configuring MIMO PMI
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
RF status: O=0, U=1, L=0
Random Access Transmission: seq=8, tti=8381, ra-rnti=0x2
Reestablishment OK
RRC Connected
Random Access Complete.     c-rnti=0x54, ta=7
Warning: Detected Radio-Link Failure
RRC Connection Reestablishment to PCI=1, EARFCN=3350 (Cause: "otherFailure")
Random Access Transmission: seq=32, tti=9241, ra-rnti=0x2
Reestablishment Reject. Going to RRC IDLE
Random Access Complete.     c-rnti=0x55, ta=7
RRC IDLE
^CStopping ..
Random Access Transmission: seq=3, tti=471, ra-rnti=0x2
RRC Connected
Random Access Complete.     c-rnti=0x56, ta=7
Couldn't stop after 5s. Forcing exit.
Saving NAS PCAP file (DLT=148) to  
Killed