Couldn't parse amplitude control

[AzeezEbrahim]

Issue Description

So, i am training to maximize the transmit power level, so i found paramets in the GNB config file.
So when i try to parse the amplitude control, such as power_ceiling_dBFs, and tx_gain_backoff.
i am facing an error INI was not able to parse ru_sdr.cells.++

idk, how else to increase the power level, and idk if i am doing it right or wrong. is there another place to increase the transmit power? a

Setup Details

I am using b210 usrp and open5gs core network.

Expected Behavior

it should parse it, unless if it is not implemented

Actual Behaviour

Steps to reproduce the problem

this is my GNB yaml file.

# associated tutorial, this config has been tested with a OnePlus 8T. A B210 USRP is used as the RF-frontend.   
# This config creates a TDD cell with 20 MHz bandwidth in band 78. 
# To run the srsRAN Project gNB with this config, use the following command: 
#   sudo ./gnb -c gnb_b210_20MHz_oneplus_8t.yaml

amf:
  addr: 127.0.1.100                                             # The address or hostname of the AMF.
  bind_addr: 127.0.0.1                                          # A local IP that the gNB binds to for traffic from the AMF.

ru_sdr:
  device_driver: uhd                                            # The RF driver name.
  device_args: type=b200,num_recv_frames=64,num_send_frames=64  # Optionally pass arguments to the selected RF driver.
  clock: internal                                               # Specify the clock source used by the RF.
  sync:                                                         # Specify the sync source used by the RF.
  srate: 30.72                                                  # RF sample rate might need to be adjusted according to selected bandwidth.
  # srate: 61.44
  otw_format: sc12
  tx_gain: 89.75                                                   # Transmit gain of the RF might need to adjusted to the given situation.
  rx_gain: 70                                                   # Receive gain of the RF might need to adjusted to the given situation.
  
  cells:                                # Optional TEXT. Sets the hardware specific cell configuration on a per cell basis. 
    amplitude control: 
      tx_gain_backoff: 12.0                     # Optional FLOAT (12.0). Sets baseband gain back-off in dB. This accounts for the signal PAPR and is applied regardless of clipping settings. Format: positive float.
      enable_clipping: false                    # Optional BOOL (false). Sets clipping of the baseband samples on or off. If enabled, samples that exceed the power ceiling are clipped.
      power_ceiling_dBFs: -0.1                  # Optional FLOAT (-0.1). Sets the power ceiling in dB, relative to the full scale amplitude of the radio. Format: negative float or 0.

cell_cfg:
  dl_arfcn: 627340                                              # ARFCN of the downlink carrier (center frequency).
  band: 78                                                      # The NR band.
  channel_bandwidth_MHz: 20                                     # Bandwith in MHz. Number of PRBs will be automatically derived.
  # channel_bandwidth_MHz: 50
  common_scs: 30                                                # Subcarrier spacing in kHz used for data.
  plmn: "99970"                                                 # PLMN broadcasted by the gNB.
  tac: 7                                                        # Tracking area code (needs to match the core configuration).
  pci: 1                                                        # Physical cell ID.

  pcg_p_nr_fr1: 23                      # Optional INT (10). Sets the maximum total TX power to be used by the UE in this NR cell group across in FR1. Supported: [-30 - +23].
  nof_antennas_dl: 2  # MIMO: 2 - SISO: 1
  nof_antennas_ul: 2  # MIMO: 2 - SISO: 1
  ssb:
    ssb_period: 20
    ssb_block_power_dbm: 50                # Optional INT (-16). Sets the SS PBCH block power in dBm. Supported: [-60 - +50].
  pdsch:
    mcs_table: qam256
  ul_common: 
    p_max: 23                                  # Optional TEXT. Sets maximum transmit power allowed in this serving cell. Supported: [-30 - +23].

# All gNB layers and components can be configur
![image](https://github.com/srsran/srsRAN_Project/assets/87777192/14b38d77-98cd-4ec5-9c31-9a7ddc372c5d)
ed independently to output at various levels of detail. Logs can be configured to the following levels (from lowest to highest levels of detail):
# none, error, warning, info, debug
 #filename:                             # Optional TEXT (/tmp/gnb.log). File path for logs
log: 
  all_level: debug                    # Optional TEXT (warning). Sets a common log level across PHY, MAC, RLC, PDCP, RRC, SDAP, NGAP and GTPU layers

pcap:
  mac_enable: true                                             # 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.
  
#   e2ap_enable: true                 # Set to true to enable E2AP PCAPs.
#   e2ap_filename: /tmp/gnb_e2ap.pcap # Path where the E2AP PCAP is stored.

# e2:
#   enable_du_e2: true                # Enable DU E2 agent (one for each DU instance)
#   e2sm_kpm_enabled: true            # Enable KPM service module```


## Additional Information ##
[Any additional information, configuration or data that might be necessary to reproduce the issue]

[AlaiaL]

Hello AzeezEbrahim,

I don't think your config is correct to configure these parameters. Can you try to replace your ru_sdr section with this one?

ru_sdr:
  device_driver: uhd                                            # The RF driver name.
  device_args: type=b200,num_recv_frames=64,num_send_frames=64  # Optionally pass arguments to the selected RF driver.
  clock: internal                                               # Specify the clock source used by the RF.
  sync:                                                         # Specify the sync source used by the RF.
  srate: 30.72                                                  # RF sample rate might need to be adjusted according to selected bandwidth.
  # srate: 61.44
  otw_format: sc12
  tx_gain: 89.75                                                   # Transmit gain of the RF might need to adjusted to the given situation.
  rx_gain: 70                                                   # Receive gain of the RF might need to adjusted to the given situation.
  cells:                                # Optional TEXT. Sets the hardware specific cell configuration on a per cell basis.
    - amplitude_control:
        tx_gain_backoff: 12.0                     # Optional FLOAT (12.0). Sets baseband gain back-off in dB. This accounts for the signal PAPR and is applied regardless of clipping settings. Format: positive float.
        enable_clipping: false                    # Optional BOOL (false). Sets clipping of the baseband samples on or off. If enabled, samples that exceed the power ceiling are clipped.
        ceiling: -0.1                  # Optional FLOAT (-0.1). Sets the power ceiling in dB, relative to the full scale amplitude of the radio. Format: negative float or 0.

[AzeezEbrahim]

ok it worked, thanks @AlaiaL .

i took it from docs, so i think it needs some updates
https://docs.srsran.com/projects/project/en/latest/user_manuals/source/config_ref.html

[KianooshSepas]

Hi all,

I've followed the srsRAN installation guide and successfully set up Open5GS as the core network. However, when I try to run the gNB using the following command:

bash

./gnb -c ./gnb_zmq.yaml

I encounter the following error:

sql

--== srsRAN gNB (commit ) ==--

INI was not able to parse amf.++
Run with --help for more information.

Could someone help me resolve this issue? It seems to be related to the amf configuration in the gnb_zmq.yaml file, but I haven't been able to fix it.
and this I just download the files from here https://docs.srsran.com/projects/project/en/latest/tutorials/source/srsUE/source/index.html#zeromq-based-setup

Thanks in advance!

[AlaiaL]

Hi KianooshSepas,

Can you share your config and the commit hash of the gNB?
Also in the configs folder of the project, can you check if the file amf.yml is present (https://github.com/srsran/srsRAN_Project/blob/main/configs/amf.yml)?

Recently we did some changes in the YAML schema regarding the amf section.

Thanks

[EspiMCF]

Hello @AlaiaL ,

Same problem as @KianooshSepas, this is my amf section (also attached the whole config file):
gnb-2x2-50-fdd.txt

amf:
  addr: 10.10.30.90
  bind_addr: 10.10.30.91
  n2_bind_addr: 10.10.30.91             # Optional TEXT. Sets local IP address to bind for N2 interface. Format: IPV4 or IPV6>
  n2_bind_interface: eno8303np0.306     # Optional TEXT. Sets the network device to bind to for N2 interface.
  n3_bind_addr: 10.10.30.101            # Optional TEXT. Sets local IP address to bind for N3 interface. Format: IPV4 or IPV6>
  n3_bind_interface: eno8303np0.307     # Optional TEXT. Sets the network device to bind to for N3 interface.
  n3_ext_addr: 10.10.30.100             # Optional TEXT. Sets the external IP address that is advertised to receive GTP-U pac>

This is the output:

$ ./gnb --help -c gnb-2x2-50-fdd.yaml

--== srsRAN gNB (commit e73b46182) ==--

INI was not able to parse amf.++
Run with --help for more information.

And I had also a previous issue using vlan_tag parameter for the ru_ofh section, that's why I needed to comment that line.

[AlaiaL]

Hi EspiMCF,

vlan_tag was updated to allow to configure the 2 planes of OFH, vlan_tag_cp (for Control-Plane) and vlan_tag_up (for User-Plane).

Regarding the amf section, that part of the configuration was recently changed, there are some examples in the configs folders, but it looks something like this:

cu_cp:
  amf:
    addr: 127.0.1.100
    port: 38412
    bind_addr: 127.0.0.1
    supported_tracking_areas:
      - tac: 7
        plmn_list:
          - plmn: "00101"
            tai_slice_support_list:
              - sst: 1

The n2 related parameters are in the cu_cp --> amf: section, while the n3 parameters are in upf section.

Printing some help of the gNB may help you to update your configs (current main branch of the repository):

aleal@Wazyx~/Repositories/Public/srsRAN_Project/build(main)$ ./apps/gnb/gnb cu_cp amf --help

--== srsRAN gNB (commit e73b46182) ==--

AMF configuration
Usage: ./apps/gnb/gnb cu_cp amf [OPTIONS]

Options:
  -h,--help                   Print this help message and exit
  --no_core BOOLEAN [false]   Allow CU-CP to run without a core
  --addr TEXT                 AMF IP address
  --port UINT:INT in [20000 - 40000] [38412] 
                              AMF port
  --bind_addr TEXT:IPV4       Local IP address to bind for N2 interface
  --bind_interface TEXT [auto] 
                              Network device to bind for N2 interface
  --sctp_rto_initial INT      SCTP initial RTO value
  --sctp_rto_min INT          SCTP RTO min
  --sctp_rto_max INT          SCTP RTO max
  --sctp_init_max_attempts INT
                              SCTP init max attempts
  --sctp_max_init_timeo INT   SCTP max init timeout 
  --sctp_nodelay BOOLEAN      Send SCTP messages as soon as possible without any Nagle-like algorithm
  --supported_tracking_areas TEXT ...
                              Sets the list of tracking areas supported by this AMF

aleal@Wazyx~/Repositories/Public/srsRAN_Project/build(main)$  ./apps/gnb/gnb upf --help

--== srsRAN gNB (commit e73b46182) ==--

UPF parameters
Usage: ./apps/gnb/gnb upf [OPTIONS]

Options:
  -h,--help                   Print this help message and exit
  --bind_addr TEXT:(IPV4) OR ({auto})
                              Local IP address to bind for N3 interface
  --bind_interface TEXT [auto] 
                              Network device to bind for N3 interface
  --ext_addr TEXT:(IPV4) OR ({auto})
                              External IP address that is advertised to receive GTP-U packets from UPF via N3 interface
  --udp_max_rx_msgs INT       Maximum amount of messages RX in a single syscall
  --pool_threshold FLOAT:FLOAT in [0 - 1]
                              Pool accupancy threshold after which packets are dropped
  --no_core BOOLEAN           Allow gNB to run without a core

Regards