Burst timing is also passed from osmo-trx to osmo-bts, so should be trivial to pass through.
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. Please excuse typos. Written with a touchscreen keyboard. -- Regards, Alexander Chemeris CEO Fairwaves, Inc. https://fairwaves.co On Jul 29, 2016 12:59, "Max" <[email protected]> wrote: > Hi. > > I'm working on http://projects.osmocom.org/issues/1616 and wonder about > $subj. > > In case of sysmobts, osmo-pcu obtain this data directly from DSP: > * RSSI (dBm) > * burst timing (in quarter of bits) > * link quality (in dB) > * BER > > The first and last value seems to be easy from what I see in > src/osmo-bts-trx/scheduler_trx.c What about burst timing (necessary to > compute TA in the absence of PTCCH) and link quality (measure of C / I > where C is carrier and I is interference power) - how can I compute > those or some estimator to those values? > > -- > 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 > >
