Command Line Reference

The srsENB application runs in the console. When running, type t in the console to enable the metrics trace. Example metrics trace:

------DL-------------------------------UL--------------------------------------------
rnti cqi  ri mcs brate   ok  nok  (%)  pusch pucch phr mcs brate   ok  nok  (%)   bsr
  47  15   0  27   49M 1000    0   0%   29.7  0.0  23.0  23   23M 1000    0   0%  130k
  47  15   0  27   49M 1000    0   0%   29.7  0.0  23.0  23   23M 1000    0   0%  130k
  47  15   0  27   49M 1000    0   0%   29.7  0.0  23.0  23   23M 1000    0   0%  128k
  47  15   0  27   49M 1000    0   0%   29.6  0.0  23.0  23   23M 1000    0   0%  128k
  47  15   0  27   49M 1000    0   0%   29.7  0.0  23.0  23   23M 1000    0   0%  128k

Metrics are generated once per second by default. This can be configured using the expert.metrics_period_secs parameter in enb.conf.

Metrics are provided on a per-UE basis for the downlink (DL) and uplink (UL) respectively. The following metrics are provided:

rnti

Radio Network Temporary Identifier (UE identifier)

cqi

Channel Quality Indicator reported by the UE (1-15)

ri

Rank Indicator reported by the UE (dB)

mcs

Modulation and coding scheme (0-28)

brate

Bitrate (bits/sec)

ok

Number of packets succesfully sent

nok

Number of packets dropped

(%)

% of packets dropped

pusch

PUSCH SNIR (Signal-to-Interference-plus-Noise Ratio)

pucch

PUCCH SNIR

phr

Power Headroom (dB)

bsr

Buffer Status Report - data waiting to be transmitted as reported by the UE (bytes)