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UL TCP Resulted in UE Drop (RLF) with OFH (Benetel Radio) permenantly #449

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IbrahimBabiker87 opened this issue Feb 2, 2024 · 11 comments
Closed

UL TCP Resulted in UE Drop (RLF) with OFH (Benetel Radio) permenantly #449

IbrahimBabiker87 opened this issue Feb 2, 2024 · 11 comments
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@alvasMan @herlesupreeth @robertfalkenberg

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@IbrahimBabiker87
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Issue Description

Initiating Uplink TCP will always result in RLF and UE drop.

Setup Details

Last Build of Srsran 23.10.1
Benetel Radio 1.0.4

Expected Behavior

To work fine

Actual Behaviour

when initiating UDP traffic in UL it works fine, However when using TCP the UE drops,
this is permanent behavior with several UE models.

ad@intel-vm-amf:~$ sudo iperf3 -c 10.45.0.20  -p 5210  -t 86400  -b 100M -R -u
Connecting to host 10.45.0.20, port 5210
Reverse mode, remote host 10.45.0.20 is sending
[  5] local 10.45.0.1 port 54063 connected to 10.45.0.20 port 5210
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-1.00   sec  6.79 MBytes  57.0 Mbits/sec  0.139 ms  0/5285 (0%)  
[  5]   1.00-2.00   sec  7.37 MBytes  61.8 Mbits/sec  0.201 ms  0/5734 (0%)  
[  5]   2.00-3.00   sec  7.02 MBytes  58.9 Mbits/sec  0.172 ms  0/5463 (0%)  
[  5]   3.00-4.00   sec  7.21 MBytes  60.5 Mbits/sec  0.972 ms  0/5611 (0%)  
[  5]   4.00-5.00   sec  6.94 MBytes  58.2 Mbits/sec  0.199 ms  0/5398 (0%)  
[  5]   5.00-6.00   sec  7.00 MBytes  58.7 Mbits/sec  0.147 ms  0/5446 (0%)  
[  5]   6.00-7.00   sec  7.27 MBytes  61.0 Mbits/sec  0.235 ms  0/5655 (0%)  
[  5]   7.00-8.00   sec  7.09 MBytes  59.5 Mbits/sec  0.458 ms  0/5519 (0%)  
[  5]   8.00-9.00   sec  7.01 MBytes  58.8 Mbits/sec  0.166 ms  0/5453 (0%)  
[  5]   9.00-10.00  sec  7.04 MBytes  59.0 Mbits/sec  0.202 ms  0/5474 (0%)  
^C[  5]  10.00-10.93  sec  6.11 MBytes  55.3 Mbits/sec  0.203 ms  0/4749 (0%)  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-10.93  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)  sender
[  5]   0.00-10.93  sec  76.9 MBytes  59.0 Mbits/sec  0.203 ms  0/59787 (0%)  receiver
iperf3: interrupt - the client has terminated
ad@intel-vm-amf:~$ sudo iperf3 -c 10.45.0.20  -p 5210  -t 86400  -b 100M -R 
Connecting to host 10.45.0.20, port 5210
Reverse mode, remote host 10.45.0.20 is sending
[  5] local 10.45.0.1 port 35940 connected to 10.45.0.20 port 5210
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  13.2 KBytes   108 Kbits/sec                  
[  5]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec                  
[  5]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec                  
[  5]   3.00-4.00   sec  0.00 Bytes  0.00 bits/sec                  
[  5]   4.00-5.00   sec  0.00 Bytes  0.00 bits/sec                  
[  5]   5.00-6.00   sec  0.00 Bytes  0.00 bits/sec                  
[  5]   6.00-7.00   sec  0.00 Bytes  0.00 bits/sec                  
^C[  5]   7.00-7.57   sec  0.00 Bytes  0.00 bits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-7.57   sec  0.00 Bytes  0.00 bits/sec                  sender
[  5]   0.00-7.57   sec  13.2 KBytes  14.2 Kbits/sec                  receiver
iperf3: interrupt - the client has terminated

Steps to reproduce the problem

connect last build of Srsran 23.10.1 with benetel radio and initiate UL TCP.

Additional Information

gnb.zip
@ismagom
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ismagom commented Feb 2, 2024

It seems the UE stops receiving/transmisting as soon as the iperf starts.

can you capture a PCAP?

Can you start iperf from the UE? (instead of iperf3 in reverse mode)

thanks

@IbrahimBabiker87
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IbrahimBabiker87 commented Feb 5, 2024 •
edited

@ismagom
Here you go,
The behavior is the same when starting iperf from UE side,

gnb_pcap.zip

@FredNys
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FredNys commented Feb 5, 2024 •
edited

@ismagom This problem is seen using all radios Benetel, N310, B210 using Quectel as UE while not seen with Nokia or Samsung UE.

@alvasMan
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alvasMan commented Feb 6, 2024

Hum... the very large SINR swing seems to happen around here:

2024-02-02T16:40:44.970602 [UL-PHY  ] [I] [  536.19] PUSCH: rnti=0x4601 h_id=0 prb=[4, 165) symb=[0, 14) mod=64QAM rv=0 tbs=14862 crc=OK iter=3.0 sinr=21.7dB t=425.7us uci_t=0.0us ret_t=199.8us
2024-02-02T16:40:44.980534 [UL-PHY  ] [I] [  537.18] PUSCH: rnti=0x4601 h_id=0 prb=[4, 165) symb=[0, 14) mod=64QAM rv=0 tbs=14862 crc=KO iter=10.0 ack=01 sinr=-29.2dB t=856.3us uci_t=122.1us ret_t=238.5us

I also see alot of these messages:

2024-02-02T16:40:44.969971 [OFH     ] [I] Dropped received Open Fronthaul User-Plane packet as decoded eAxC value '1' is not configured
2024-02-02T16:40:44.969979 [OFH     ] [I] Dropped received Open Fronthaul User-Plane packet as decoded eAxC value '1' is not configured

@IbrahimBabiker87 could you please share your full config? @AlaiaL Could you please advise @IbrahimBabiker87 with the dropped OFH packets?

@AzeezEbrahim
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hey @IbrahimBabiker87 @ismagom
i am facing same issue with Quectel UE (RM502Q-AE).
see it here #454

@AlaiaL
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AlaiaL commented Feb 6, 2024

Dropped received Open Fronthaul User-Plane packet as decoded eAxC value '1' is not configured

This usually happens when there are more ul_port_id in the OFH section than the number of rx antennas in the gNB configuration. If you want to get rid of these messages you could match these parameters in your configuration. For example for SISO:


ru_ofh:
  cells:
    - ul_port_id: [0]


cell_cfg:
  nof_antennas_dl: 1
  nof_antennas_ul: 1

@IbrahimBabiker87
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Matching the ports in UL and DL didnt solve the issue ( below results with 2X2)
for SISO need to reconfigure the Benetel RU, but usually we use 2x2 at least
its good to know that its working fine with Nokia Xr20 and Samsung S22

ad@intel-vm-amf:~$ sudo iperf3 -c 10.45.0.20  -p 5210  -t 86400 -b 0.1G -u -R
Connecting to host 10.45.0.20, port 5210
Reverse mode, remote host 10.45.0.20 is sending
[  5] local 10.45.0.1 port 40003 connected to 10.45.0.20 port 5210
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-1.00   sec  5.92 MBytes  49.6 Mbits/sec  0.054 ms  0/4602 (0%)  
[  5]   1.00-2.00   sec  5.91 MBytes  49.6 Mbits/sec  0.141 ms  0/4598 (0%)  
[  5]   2.00-3.00   sec  5.93 MBytes  49.8 Mbits/sec  0.115 ms  0/4616 (0%)  
[  5]   3.00-4.00   sec  6.01 MBytes  50.4 Mbits/sec  0.212 ms  0/4675 (0%)  
[  5]   4.00-5.00   sec  6.06 MBytes  50.8 Mbits/sec  0.253 ms  0/4715 (0%)  
[  5]   5.00-6.00   sec  5.84 MBytes  49.0 Mbits/sec  0.284 ms  0/4544 (0%)  
[  5]   6.00-7.00   sec  6.16 MBytes  51.7 Mbits/sec  0.390 ms  0/4794 (0%)  
[  5]   7.00-8.00   sec  5.93 MBytes  49.8 Mbits/sec  0.270 ms  0/4614 (0%)  
[  5]   8.00-9.00   sec  6.07 MBytes  50.9 Mbits/sec  0.231 ms  0/4720 (0%)  
[  5]   9.00-10.00  sec  5.92 MBytes  49.7 Mbits/sec  0.463 ms  0/4607 (0%)  
[  5]  10.00-11.00  sec  6.02 MBytes  50.5 Mbits/sec  0.255 ms  0/4680 (0%)  
[  5]  11.00-12.00  sec  5.98 MBytes  50.2 Mbits/sec  0.223 ms  0/4651 (0%)  
[  5]  12.00-13.00  sec  6.05 MBytes  50.7 Mbits/sec  0.213 ms  0/4705 (0%)  
[  5]  13.00-14.00  sec  6.14 MBytes  51.5 Mbits/sec  1.596 ms  0/4775 (0%)  
[  5]  14.00-15.00  sec  6.18 MBytes  51.9 Mbits/sec  0.198 ms  0/4811 (0%)  
[  5]  15.00-16.00  sec  5.75 MBytes  48.2 Mbits/sec  0.243 ms  0/4473 (0%)  
[  5]  16.00-17.00  sec  6.15 MBytes  51.6 Mbits/sec  1.113 ms  0/4781 (0%)  
[  5]  17.00-18.00  sec  6.10 MBytes  51.1 Mbits/sec  0.605 ms  0/4742 (0%)  
[  5]  18.00-19.00  sec  5.98 MBytes  50.2 Mbits/sec  0.290 ms  0/4654 (0%)  
[  5]  19.00-20.00  sec  6.14 MBytes  51.5 Mbits/sec  1.027 ms  0/4779 (0%)  
[  5]  20.00-21.00  sec  6.20 MBytes  52.0 Mbits/sec  0.052 ms  0/4820 (0%)  
[  5]  21.00-22.00  sec  6.28 MBytes  52.6 Mbits/sec  0.510 ms  0/4882 (0%)  
[  5]  22.00-23.00  sec  5.96 MBytes  50.0 Mbits/sec  0.216 ms  0/4633 (0%)  
[  5]  23.00-24.00  sec  6.25 MBytes  52.5 Mbits/sec  0.186 ms  0/4865 (0%)  
[  5]  24.00-25.00  sec  5.93 MBytes  49.7 Mbits/sec  0.352 ms  0/4613 (0%)  
[  5]  25.00-26.00  sec  6.16 MBytes  51.7 Mbits/sec  0.383 ms  0/4793 (0%)  
[  5]  26.00-27.00  sec  6.23 MBytes  52.3 Mbits/sec  0.135 ms  0/4847 (0%)  
[  5]  27.00-28.00  sec  6.21 MBytes  52.1 Mbits/sec  0.186 ms  0/4828 (0%)  
[  5]  28.00-29.00  sec  6.09 MBytes  51.1 Mbits/sec  0.184 ms  0/4740 (0%)  
^C[  5]  29.00-29.66  sec  4.04 MBytes  51.1 Mbits/sec  0.090 ms  0/3143 (0%)  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Jitter    Lost/Total Datagrams
[  5]   0.00-29.66  sec  0.00 Bytes  0.00 bits/sec  0.000 ms  0/0 (0%)  sender
[  5]   0.00-29.66  sec   180 MBytes  50.8 Mbits/sec  0.090 ms  0/139700 (0%)  receiver
iperf3: interrupt - the client has terminated
ad@intel-vm-amf:~$ sudo iperf3 -c 10.45.0.20  -p 5210  -t 86400 -b 0.1G  -R
Connecting to host 10.45.0.20, port 5210
Reverse mode, remote host 10.45.0.20 is sending
[  5] local 10.45.0.1 port 57344 connected to 10.45.0.20 port 5210
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  13.2 KBytes   108 Kbits/sec                  
[  5]   1.00-2.00   sec  0.00 Bytes  0.00 bits/sec                  
[  5]   2.00-3.00   sec  0.00 Bytes  0.00 bits/sec                  
[  5]   3.00-4.00   sec  0.00 Bytes  0.00 bits/sec                  
^C[  5]   4.00-4.93   sec  0.00 Bytes  0.00 bits/sec                  
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-4.93   sec  0.00 Bytes  0.00 bits/sec                  sender
[  5]   0.00-4.93   sec  13.2 KBytes  21.9 Kbits/sec                  receiver
iperf3: interrupt - the client has terminated

config:

ru_ofh:
  ru_bandwidth_MHz: 100                                           # RU instantaneous bandwidth.
  t1a_max_cp_dl: 470                                              # Maximum T1a on Control-Plane for Downlink in microseconds.
  t1a_min_cp_dl: 419                                              # Minimum T1a on Control-Plane for Downlink in microseconds.
  t1a_max_cp_ul: 336                                              # Maximum T1a on Control-Plane for Uplink in microseconds.
  t1a_min_cp_ul: 285                                              # Minimum T1a on Control-Plane for Uplink in microseconds.
  t1a_max_up: 345                                                 # Maximum T1a on User-Plane in microseconds.
  t1a_min_up: 294
  ta4_max: 200                                                    # Maximum Ta4 on User-Plane in microseconds.
  ta4_min: 0                                                      # Minimum Ta4 on User-Plane in microseconds.
  ignore_ecpri_seq_id: 0                # Optional BOOLEAN (0). Sets whether or not to ignore eCPRI sequence ID field value. Supported [0, 1].
  ignore_ecpri_payload_size: 0          # Optional BOOLEAN (0). Sets whether or not to ignore eCPRI payload size field value. Supported [0, 1].
  is_prach_cp_enabled: 0                                      # Configures if Control-Plane messages should be used to receive PRACH messages.
  compr_method_ul: bfp                                            # Uplink compression method.
  compr_bitwidth_ul: 9                                            # Uplink IQ samples bitwidth after compression.
  compr_method_dl: bfp                                            # Downlink compression method.
  compr_bitwidth_dl: 9                                           # Downlink IQ samples bitwidth after compression.
  compr_method_prach: bfp                                         # PRACH compression method.
  compr_bitwidth_prach: 9                                     # PRACH IQ samples bitwidth after compression.
  enable_ul_static_compr_hdr: 1                                # Configures if the compression header is present for uplink User-Plane messages (false) or not present (true).
  enable_dl_static_compr_hdr: 1                                # Configures if the compression header is present for downlink User-Plane messages (false) or not present (true).
  iq_scaling: 8                                      # IQ samples scaling factor applied before compression, should be a positive value smaller than 10.  
  cells:                                # Optional TEXT. Sets the hardware specific cell configuration on a per cell basis.
  - network_interface: 0000:01:00.0             # Optional TEXT (enp1s0f0). Sets the ethernet network interface name for the RU. Format: a string, e.g. [interface_name].
    ru_mac_addr: 70:b3:d5:e1:5d:3d       # Optional TEXT (70:b3:d5:e1:5b:06). Sets the RU MAC address. Format: a string, e.g. [AA:BB:CC:DD:11:22:33].
    du_mac_addr: 7c:c2:55:69:f5:88       # Optional TEXT (00:11:22:33:00:77). Sets the DU MAC address. Format: a string, e.g. [AA:BB:CC:DD:11:22:33].
    vlan_tag: 5                             # Optional UINT (1). Sets the V-LAN tag control information field. Supported: [1 - 4094].
    prach_port_id: [4,5]                   # Optional UINT (4). Sets the RU PRACH eAxC port ID. Supported: [0 - 65535].
    dl_port_id: [0,1]                   # Optional UINT (0, 1). Sets the RU downlink eAxC port ID. Format: vector containing all DL eXaC ports, e.g. [0, ...\ , N].
    ul_port_id: [0,1]                      # Optional UINT (0). Sets the RU uplink eAxC port ID. Supported: [0 - 65535].

hal:
  eal_args: "--lcores (0-1)@(0-31) -a 0000:01:00.0"


cell_cfg:
  dl_arfcn: 637212                                             # ARFCN of the downlink carrier (center frequency).
  band: 78                                                        # The NR band.
  channel_bandwidth_MHz: 100                                       # Bandwith in MHz. Number of PRBs will be automatically derived.
  common_scs: 30                                                  # Subcarrier spacing in kHz used for data.
  plmn: "00101"                                                   # PLMN broadcasted by the gNB.
  tac: 1                                                          # Tracking area code (needs to match the core configuration).
  pci: 1                                                          # Physical cell ID. 
  nof_antennas_dl: 2                                              # Downlink number of antennas.
  nof_antennas_ul: 2                                              # Uplink number of anntennas.

@robertfalkenberg
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robertfalkenberg commented Mar 15, 2024 •
edited

Hi @IbrahimBabiker87,

I have tried to reproduce locally using a USRP B210 and a COTS Telit FN990A28 module, but UL iperf3 with TCP didn't have any issues - here are the runs of two consecutive iperf3 runs, each for 10s:

50MHz 1x1:

-== srsRAN gNB (commit 59008378e6) ==--

Connecting to AMF on 10.53.1.2:38412
Available radio types: uhd and zmq.
[INFO] [UHD] linux; GNU C++ version 13.2.1 20230801; Boost_108300; UHD_4.6.0.0-0-unknown
Making USRP object with args 'type=b200'
[INFO] [LOGGING] Fastpath logging disabled at runtime.
[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] Setting master clock rate selection to 'automatic'.
[INFO] [B200] Asking for clock rate 16.000000 MHz... 
[INFO] [B200] Actually got clock rate 16.000000 MHz.
[INFO] [MULTI_USRP] Setting master clock rate selection to 'manual'.
[INFO] [B200] Asking for clock rate 61.440000 MHz... 
[INFO] [B200] Actually got clock rate 61.440000 MHz.
[WARNING] [AD936X] Selected Tx sample rate (61.44 MHz) is greater than
analog frontend filter bandwidth (56 MHz).
[WARNING] [AD936X] Selected Rx sample rate (61.44 MHz) is greater than
analog frontend filter bandwidth (56 MHz).
Cell pci=1, bw=50 MHz, dl_arfcn=710000 (n79), dl_freq=4650.0 MHz, dl_ssb_arfcn=709536, ul_freq=4650.0 MHz

==== gNodeB started ===
Type <t> to view trace
t

           -----------------DL-----------------------|------------------UL--------------------
 pci rnti  cqi  ri  mcs  brate   ok  nok  (%)  dl_bs | pusch  mcs  brate   ok  nok  (%)    bsr
   1 4601   15   1   25    27k   25    7  21%      0 |  19.9   27   161k   17   10  37%      0
   1 4601   15   1   20   302k  196   67  25%      0 |  15.5   24    10M  171   36  17%  77.3k
   1 4601   15   1   19   422k  291   79  21%      0 |  14.8   24    17M  242   51  17%   300k
   1 4601   15   1   19   945k  612  105  14%    290 |  15.1   24    31M  425   67  13%   300k
   1 4601   15   1   19   1.2M  714  141  16%    348 |  15.2   24    38M  500   82  14%   300k
   1 4601   15   1   19   1.3M  769  131  14%      0 |  15.0   23    38M  513   86  14%   300k
   1 4601   15   1   19   1.1M  632  134  17%    525 |  14.8   21    35M  509   93  15%   300k
Late: 0; Underflow: 3; Overflow: 0;
   1 4601   15   1   19   1.2M  765  121  13%      0 |  15.9   24    40M  524   75  12%   300k
   1 4601   15   1   19   1.2M  732  140  16%    174 |  15.9   24    40M  527   73  12%   300k
   1 4601   15   1   19   1.2M  685  137  16%      0 |  14.8   24    39M  505   95  15%   300k
Late: 24; Underflow: 10; Overflow: 1;
   1 4601   15   1   19   1.3M  827  119  12%    640 |  15.4   24    40M  519   81  13%   300k

           -----------------DL-----------------------|------------------UL--------------------
 pci rnti  cqi  ri  mcs  brate   ok  nok  (%)  dl_bs | pusch  mcs  brate   ok  nok  (%)    bsr
   1 4601   15   1   19   139k   70   15  17%      0 |  19.3   25   3.0M   42    2   4%      0
   1 4601   15   1    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4601   15   1    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4601   15   1    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4601   15   1    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4602   15   1   25   162k   95   17  15%      0 |  17.6   27   3.9M   64   14  17%  77.3k
   1 4602   15   1   19   707k  490   86  14%     16 |  16.6   26    25M  314   44  12%   150k
   1 4602   15   1   19   1.2M  781   84   9%    290 |  16.0   23    37M  501   74  12%   300k
Late: 0; Underflow: 3; Overflow: 0;
   1 4602   15   1   19   1.4M  894  116  11%    116 |  17.5   25    44M  549   52   8%   300k

           -----------------DL-----------------------|------------------UL--------------------
 pci rnti  cqi  ri  mcs  brate   ok  nok  (%)  dl_bs | pusch  mcs  brate   ok  nok  (%)    bsr
   1 4602   15   1   19   1.5M  880  111  11%    174 |  20.2   26    48M  572   26   4%   300k
   1 4602   15   1   19   1.5M  969   96   9%    795 |  19.9   26    49M  576   26   4%   300k
   1 4602   15   1   19   1.5M  976  106   9%    469 |  20.3   26    48M  579   21   3%   300k
   1 4602   15   1   19   1.5M  962   92   8%    290 |  20.7   27    50M  586   13   2%   300k
   1 4602   15   1   19   1.4M  938  103   9%    239 |  19.0   25    45M  561   36   6%   300k
   1 4602   15   1   19   1.3M  866   90   9%      0 |  17.0   24    42M  536   63  10%   300k
   1 4602   15   1   19   1.3M  875   92   9%      0 |  19.0   25    42M  519   33   5%      0
   1 4602   15   1   19    13k    8    2  20%      0 |  23.8   28    13k    3    0   0%      0
   1 4602   15   1    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4602   15   1   19    672    1    0   0%      0 |  26.6   28   4.4k    1    0   0%      0
   1 4602   15   1   19    672    1    0   0%      0 |  25.6   28   4.4k    1    0   0%      0

           -----------------DL-----------------------|------------------UL--------------------
 pci rnti  cqi  ri  mcs  brate   ok  nok  (%)  dl_bs | pusch  mcs  brate   ok  nok  (%)    bsr
   1 4602   15   1   19    672    1    0   0%      0 |  25.1   28   4.4k    1    0   0%      0
   1 4602   15   1   19    672    1    0   0%      0 |  24.7   28   4.4k    1    0   0%      0
   1 4602   15   1    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4602   15   1    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4602   15   1    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0

30MHz 2x2:

--== srsRAN gNB (commit 59008378e6) ==--

Connecting to AMF on 10.53.1.2:38412
Available radio types: uhd and zmq.
[INFO] [UHD] linux; GNU C++ version 13.2.1 20230801; Boost_108300; UHD_4.6.0.0-0-unknown
[INFO] [LOGGING] Fastpath logging disabled at runtime.
[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] Setting master clock rate selection to 'automatic'.
[INFO] [B200] Asking for clock rate 16.000000 MHz... 
[INFO] [B200] Actually got clock rate 16.000000 MHz.
[INFO] [MULTI_USRP] Setting master clock rate selection to 'manual'.
[INFO] [B200] Asking for clock rate 30.720000 MHz... 
[INFO] [B200] Actually got clock rate 30.720000 MHz.
[INFO] [MULTI_USRP]     1) catch time transition at pps edge
[INFO] [MULTI_USRP]     2) set times next pps (synchronously)
Cell pci=1, bw=30 MHz, dl_arfcn=650000 (n78), dl_freq=3750.0 MHz, dl_ssb_arfcn=649344, ul_freq=3750.0 MHz

==== gNodeB started ===
Type <t> to view trace
Late: 0; Underflow: 2; Overflow: 0;
t

           -----------------DL-----------------------|------------------UL--------------------
 pci rnti  cqi  ri  mcs  brate   ok  nok  (%)  dl_bs | pusch  mcs  brate   ok  nok  (%)    bsr
   1 4601    9   2   22    19k   11    6  35%      0 |  29.3   25    30k    7    0   0%      0
   1 4601    8   2    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4601    8   2    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4602   13   2   21    17k   10    5  33%      0 |  30.5   25    39k    7    0   0%      0
   1 4602    7   2   11   1.5k    2    1  33%      0 |  31.2   28   8.7k    2    0   0%      0
   1 4602    7   2   11   2.2k    3    0   0%      0 |  30.8   28    13k    3    0   0%      0
   1 4602    8   2   10   2.8k    4    1  20%      0 |  30.7   28    17k    4    0   0%      0
   1 4602    8   2   10   2.8k    4    0   0%      0 |  30.7   28    17k    4    0   0%      0

           -----------------DL-----------------------|------------------UL--------------------
 pci rnti  cqi  ri  mcs  brate   ok  nok  (%)  dl_bs | pusch  mcs  brate   ok  nok  (%)    bsr
   1 4602    8   2   11   2.9k    4    0   0%      0 |  30.5   28    17k    4    0   0%      0
   1 4602    9   2   13   4.4k    5    0   0%      0 |  30.4   28    22k    5    0   0%      0
   1 4602    8   2   12   2.5k    3    0   0%      0 |  30.1   28    13k    3    0   0%      0
   1 4602    8   2   11   2.2k    3    0   0%      0 |  29.9   28    13k    3    0   0%      0
   1 4602    8   2   11   2.4k    3    1  25%      3 |  30.0   28    17k    4    0   0%      0
   1 4602    8   2   11   1.5k    2    1  33%      0 |  30.8   28   4.4k    1    0   0%      0
   1 4602    9   2   11   819k  382   11   2%    522 |  26.4   28    23M  457    0   0%   150k
   1 4602    9   2   11   1.0M  451    3   0%    290 |  26.0   28    31M  600    0   0%   300k
   1 4602    8   2   10   998k  466    6   1%    522 |  26.1   28    31M  600    0   0%   300k
   1 4602    8   2   10   935k  436    2   0%    406 |  25.9   28    31M  600    0   0%   300k
   1 4602    8   2   11   936k  465    3   0%    464 |  26.1   28    31M  600    0   0%   300k

           -----------------DL-----------------------|------------------UL--------------------
 pci rnti  cqi  ri  mcs  brate   ok  nok  (%)  dl_bs | pusch  mcs  brate   ok  nok  (%)    bsr
   1 4602    8   2   10   929k  455    4   0%    464 |  26.1   28    31M  600    0   0%   300k
   1 4602    8   2   10   910k  457    4   0%    406 |  26.0   28    31M  600    0   0%   300k
   1 4602    9   2   10   928k  496    5   0%    174 |  26.2   28    30M  599    0   0%   300k
   1 4602    8   2   10   937k  453    8   1%    232 |  26.1   28    31M  601    0   0%   300k
   1 4602    8   2    9   891k  458    1   0%    290 |  26.0   28    31M  600    0   0%   300k
   1 4602    8   2   10   356k  158    2   1%      0 |  25.8   28    11M  216    0   0%      0
   1 4602    9   2    8    576    1    0   0%      0 |  30.8   28   4.4k    1    0   0%      0
   1 4602    8   2   10   1.3k    2    0   0%      0 |  30.1   28   8.7k    2    0   0%      0
   1 4602    7   2    0      0    0    0   0%      0 |   n/a    0      0    0    0   0%      0
   1 4602    8   2    9   543k  286    3   1%    406 |  26.7   28    15M  306    0   0%   108k
   1 4602    8   2   10   1.0M  557    6   1%    580 |  26.3   28    31M  600    0   0%   300k

           -----------------DL-----------------------|------------------UL--------------------
 pci rnti  cqi  ri  mcs  brate   ok  nok  (%)  dl_bs | pusch  mcs  brate   ok  nok  (%)    bsr
   1 4602    8   2   10   1.1M  532    5   0%    522 |  26.4   28    31M  600    0   0%   300k
   1 4602    9   2   10   1.0M  542   13   2%    580 |  26.2   28    31M  600    0   0%   300k
   1 4602    8   2    9   973k  539    7   1%    232 |  26.3   28    30M  599    0   0%   300k
   1 4602    8   2    9   981k  542    6   1%    290 |  26.2   28    31M  601    0   0%   300k
   1 4602    9   2    9   982k  535    3   0%    580 |  26.4   28    31M  600    0   0%   300k
   1 4602    8   2    9   963k  607    5   0%    406 |  26.3   28    31M  600    0   0%   300k
   1 4602    9   2    9   944k  545   10   1%    290 |  26.2   28    31M  600    0   0%   300k
   1 4602    8   2    9   952k  531    5   0%    406 |  26.3   28    31M  600    0   0%   300k
   1 4602    9   2    9   643k  371    3   0%      0 |  26.1   28    20M  400    0   0%      0
   1 4602    8   2    9    640    1    0   0%      0 |  30.6   28   4.4k    1    0   0%      0
   1 4602    9   2    9    640    1    0   0%      0 |  29.9   28   4.4k    1    0   0%      0

Here are both configs that I used:
gnb_rf_b200_tdd.tar.gz

I'll follow-up with results for Quectel RM500Q shortly.

@IbrahimBabiker87
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Hello @robertfalkenberg ,

Thank you for your feedback, The problem appeared in Qectel 500Q , and One Pluse

@ismagom
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ismagom commented Apr 4, 2024

Hi @IbrahimBabiker87 , we were able to reproduce the issue and provided a fix. Could you test if:

https://github.com/srsran/srsRAN_Project/tree/fix_disconnect

fixes it for you?

FYI, the problem seemed to be we were using the extended size bit in the MAC header to indicate the size of a PDU which didn't need it.

@IbrahimBabiker87
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@ismagom

Thank you its solved now in fix_disconnect branch

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