# This example configuration outlines how to configure the srsRAN Project gNB to create a single FDD cell
# transmitting in band 3, with 20 MHz bandwidth and 15 kHz sub-carrier-spacing. A USRP B200 is configured 
# as the RF frontend using split 8, with a Leo Bodnar GPSDO as an external reference clock. 

# This particular configuration is intended to be used with srsUE. Note the `pdcch` parameters set in the 
# `cell_cfg` section. These are set to match the capabilities of srsUE. 

amf:
  addr: 10.162.149.236                                                 # The address or hostname of the AMF.
  bind_addr: 10.162.149.128                                           # A local IP that the gNB binds to for>

ru_sdr:
  device_driver: uhd                                              # The RF driver name.
  device_args: type=x300,addr=192.168.10.2,master_clock_rate=184.32e6,send_frame_size=8000,recv_frame_size=8000 # Optionally pass arguments to the selected RF driver.
  #clock: external                   # Specify the clock source used by the RF.
  #sync: external                    # Specify the sync source used by the RF.                      
  srate: 23.04 #11.52                                                    # RF sample rate might need to be adjusted according to selected bandwidth.
  tx_gain: 30 #max. gain see usrp probe                                                     # Transmit gain of the RF might need to adjusted to the given situation.
  rx_gain: 30 #max. gain see usrp probe                                                    # Receive gain of the RF might need to adjusted to the given situation. 
  time_alignment_calibration: auto

cell_cfg:
  dl_arfcn: 368500                  # ARFCN of the downlink carrier (center frequency).
  band: 3                           # The NR band.
  channel_bandwidth_MHz: 20 #10         # 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 #6            # 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

log:
  filename: /tmp/gnb.log                                          # Path of the log file.
  all_level: info                                                 # Logging level applied to all layers.

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