Please have a look at gerrit #623 - am I computing BER properly? I've tried to follow what's done for meas. ind. Also, how would you recommend to compute/estimate C/I? In the current patch version I'm just using 0.
On 08/02/2016 12:57 AM, Tom Tsou wrote: > On Fri, Jul 29, 2016 at 5:18 PM, Alexander Chemeris > <[email protected]> wrote: >> Burst timing is also passed from osmo-trx to osmo-bts, so should be trivial >> to pass through. > Yes. I don't know where the TOA value ends up in osmo-bts, but the > value is definitely carried per-burst on the socket interface. > >> For C/I we need a comment from Thomas. Currently we don't have it on the >> osmo-trx interface and I'm not even sure we calculate it. > We don't have C/I directly. We do have a running average 'noise' level > (calculated channel power on non-active uplink slots) and the RSSI > value. The channel noise is queried with the NOISELEV command. RSSI is > carried per-burst on the socket message. C/I can be calculated from > those two values. > > Do we need a periodically averaged C/I value or an update every burst? > > -TT -- Max Suraev <[email protected]> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte
