I'm running srsUE on FPGA, buildroot with 2 CPUs and 1G memory. srsRAN is running on my laptop, ubuntu 22. I use dockerized version of 5gc. srsUE and srsRAN connected through ZMQ and on a local network. However srsUE can't attach to srsRAN. ue logs:

srsRAN(gNB) logs:

2025-03-07T20:05:40.500739 [zmq:tx:0:0] [I] Waiting for request.
2025-03-07T20:05:41.195026 [zmq:rx:0:0] [I] Waiting for data.
2025-03-07T20:05:41.196508 [zmq:rx:0:0] [I] Waiting for reading samples. Completed 300 of 11520 samples.
2025-03-07T20:05:41.500739 [zmq:tx:0:0] [I] Waiting for request.
2025-03-07T20:05:42.195028 [zmq:rx:0:0] [I] Waiting for data.
2025-03-07T20:05:42.196532 [zmq:rx:0:0] [I] Waiting for reading samples. Completed 300 of 11520 samples.
2025-03-07T20:05:42.500741 [zmq:tx:0:0] [I] Waiting for request.
2025-03-07T20:05:43.195030 [zmq:rx:0:0] [I] Waiting for data.
2025-03-07T20:05:43.196586 [zmq:rx:0:0] [I] Waiting for reading samples. Completed 300 of 11520 samples.

ue config:

[rf]
freq_offset = 0
tx_gain = 50
rx_gain = 50
srate = 23.04e6
nof_antennas = 1

device_name = zmq
device_args = tx_port=tcp://[ue ip]:2002,rx_port=tcp://[gnb ip]:2001,base_srate=23.04e6

[rat.eutra]
dl_earfcn = 2850
nof_carriers = 0

[rat.nr]
bands = 3
nof_carriers = 1
max_nof_prb = 106
nof_prb = 106

[pcap]
enable = none
mac_filename = /tmp/ue_mac.pcap
mac_nr_filename = /tmp/ue_mac_nr.pcap
nas_filename = /tmp/ue_nas.pcap

[log]
all_level = debug    # Instead of info
phy_lib_level = debug
all_hex_limit = 32
filename = /usr/ue.log
file_max_size = -1

[usim]
mode = soft
algo = milenage
opc  = 63BFA50EE6523365FF14C1F45F88737D
k    = 00112233445566778899aabbccddeeff
imsi = 001010123456780
imei = 353490069873319

[rrc]
release = 15
ue_category = 4

[nas]
apn = srsapn
apn_protocol = ipv4

[gw]
#netns = ue1
ip_devname = tun_srsue
ip_netmask = 255.255.255.0

[gui]
enable = false

gnb.conf:

# This configuration file example shows how to configure the srsRAN Project gNB to allow srsUE to connect to it. 
# This specific example uses ZMQ in place of a USRP for the RF-frontend, and creates an FDD cell with 10 MHz bandwidth. 
# To run the srsRAN Project gNB with this config, use the following command: 
#   sudo ./gnb -c gnb_zmq.yaml

cu_cp:
  amf:
    addr: 10.53.1.2                 # The address or hostname of the AMF.
    port: 38412
    bind_addr: 10.53.1.1            # A local IP that the gNB binds to for traffic from the AMF.
    supported_tracking_areas:
      - tac: 7
        plmn_list:
          - plmn: "00101"
            tai_slice_support_list:
              - sst: 1
  inactivity_timer: 7200            # Sets the UE/PDU Session/DRB inactivity timer to 7200 seconds. Supported: [1 - 7200].

ru_sdr:
  device_driver: zmq                # The RF driver name.
  device_args: tx_port=tcp://[gnb ip]:2001,rx_port=tcp://[ue ip]:2002,base_srate=23.04e6 # Optionally pass arguments to the selected RF driver.
  srate: 23.04                      # RF sample rate might need to be adjusted according to selected bandwidth.
  tx_gain: 75                       # Transmit gain of the RF might need to adjusted to the given situation.
  rx_gain: 75                       # Receive gain of the RF might need to adjusted to the given situation.

cell_cfg:
  dl_arfcn: 368500                  # ARFCN of the downlink carrier (center frequency).
  band: 3                           # The NR band.
  channel_bandwidth_MHz: 20         # Bandwith in MHz. Number of PRBs will be automatically derived.
  common_scs: 15                    # Subcarrier spacing in kHz used for data.
  plmn: "00101"                     # PLMN broadcasted by the gNB.
  tac: 7                            # Tracking area code (needs to match the core configuration).
  pdcch:
    common:
      ss0_index: 0                  # Set search space zero index to match srsUE capabilities
      coreset0_index: 12            # Set search CORESET Zero index to match srsUE capabilities
    dedicated:
      ss2_type: common              # Search Space type, has to be set to common
      dci_format_0_1_and_1_1: false # Set correct DCI format (fallback)
  prach:
    prach_config_index: 1           # Sets PRACH config to match what is expected by srsUE                # Sets PDSCH MCS to 64 QAM                # Sets PUSCH MCS to 64 QAM
  pdsch:
    mcs_table: qam64
  pusch:
    mcs_table: qam64    

log:
  filename: /tmp/gnb.log            # Path of the log file.
  all_level: debug                   # Logging level applied to all layers.
  rrc_level: debug
  f1ap_level: debug
  f1ap_json_enabled: true
  hex_max_size: 0                   # Logging level applied to all layers

pcap:
  mac_enable: false                 # Set to true to enable MAC-layer PCAPs.
  mac_filename: /tmp/gnb_mac.pcap   # Path where the MAC PCAP is stored.
  ngap_enable: false                # Set to true to enable NGAP PCAPs.
  ngap_filename: /tmp/gnb_ngap.pcap # Path where the NGAP PCAP is stored.

What do you think is causing this? FPGA? (Maybe because of low resources?) or is it because of BW and srate?

Thanks.