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 bler snr phr mcs brate bler bsr
46 14.1 2.0 25.1 28.4M 0.8% 24.8 0.0 23.1 9.60M 2.2% 140k
46 14.8 2.0 26.6 30.7M 0% 24.9 0.0 23.2 9.92M 0% 140k
46 14.7 2.0 26.3 30.1M 0.8% 24.9 0.0 23.1 9.90M 0% 140k
46 14.8 2.0 26.5 30.6M 0% 24.9 0.0 23.1 9.90M 0% 140k
46 15.0 2.0 26.7 30.9M 0% 24.8 0.0 23.1 9.83M 0% 140k
46 14.5 2.0 26.1 30.0M 0% 24.9 0.0 23.1 9.88M 0% 140k
46 14.8 2.0 26.3 30.3M 0% 24.8 0.0 23.1 9.84M 0% 140k
46 14.7 2.0 26.4 30.4M 0% 24.9 0.0 23.1 9.89M 0% 140k
46 14.7 2.0 26.4 30.4M 0% 24.9 0.0 23.2 9.91M 0% 140k
46 14.7 2.0 26.3 30.4M 0% 24.9 0.0 23.1 9.87M 0% 140k
46 14.8 2.0 26.4 30.4M 0% 24.9 0.0 23.1 9.88M 0% 140k
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) |
| bler: | Block error rate |
| snr: | Signal-to-Noise Ratio (dB) |
| phr: | Power Headroom (dB) |
| bsr: | Buffer Status Report - data waiting to be transmitted as reported by the UE (bytes) |