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| author | Pau Espin Pedrol <pespin@sysmocom.de> | 2020-10-13 17:03:37 +0200 |
|---|---|---|
| committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2020-10-14 12:53:04 +0200 |
| commit | e91544d740a8606a994053b2f9eaf99059f40e33 (patch) | |
| tree | 94e32b203c6dc8e5af4eb8de280c6c841dc6d55e /doc | |
| parent | 93fee1f163054094ec52a87db33ab31e3b5ab74e (diff) | |
Calculate RSSI offset based on RxGain configuration
Prior to this patch, osmo-trx relied totally on proper VTY configuration
being set in "rssi-offset" together with the RxGain set through TRXC in
order to provide correct Uplink RSSI measurements to bts-trx.
With this patch, RSSI is now by default calculated (in LMS and UHD
backends) based on the currently set RxGain, by providing empirically
discovered values. Still, for backward compatibility, the old
"rssi-offset" command will overwrite completely the per-default
calculated rssi offset.
A new optional parameter "relative" is added at the end of the
"rssi-offset" VTY command to flag the value as relative to the newly
per-default calculated value. This way specific setups (like adding a
LNA / RF fronted) can still be expressed while still keeping the
automatic per-default offset.
Related: OS#4468
Change-Id: I8ef78fd20c22c60d61bfb18d80a4a36df4fd6c20
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/examples/osmo-trx-uhd/osmo-trx-usrp_b200.cfg | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/doc/examples/osmo-trx-uhd/osmo-trx-usrp_b200.cfg b/doc/examples/osmo-trx-uhd/osmo-trx-usrp_b200.cfg index a924122..9eeb395 100644 --- a/doc/examples/osmo-trx-uhd/osmo-trx-usrp_b200.cfg +++ b/doc/examples/osmo-trx-uhd/osmo-trx-usrp_b200.cfg @@ -15,9 +15,6 @@ trx bind-ip 127.0.0.1 remote-ip 127.0.0.1 egprs disable - ! 28 dB offset below is valid only for the B2xx in 1800 MHz band, see - ! https://osmocom.org/issues/4468 for more details - rssi-offset 28.000000 tx-sps 4 rx-sps 4 clock-ref external |