Hi. While looking at http://projects.osmocom.org/issues/1616 I've noticed that there seems to be no particular function which get signal quality info from dsp. At least looking at code around ENABLE_DIRECT_PHY have not enlightened me so far. The question is - how exactly signal quality is obtained from dsp (on hw with direct dsp access) to osmo-pcu. There is clear difference between l1if_pdch_req() and pcu_tx_data_req() on TX path but what's the equivalent for RX? -- Max Suraev <msuraev@sysmocom.de> 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
Hi Max, On Tue, Jul 19, 2016 at 11:44:45AM +0200, Max wrote:
The question is - how exactly signal quality is obtained from dsp (on hw with direct dsp access) to osmo-pcu.
The primitives received from the DSP in the sysmoBTS products are not any different on the PCU side than on the BTS side. It's a DATA-indication (GsmL1_PhDataInd_t), and that in turn contains a GsmL1_MeasParam_t member, which has * RSSI * burst Timing * link quality * BER see http://git.sysmocom.de/sysmo-bts/layer1-api/tree/include/gsml1prim.h for more infoformation.
There is clear difference between l1if_pdch_req() and pcu_tx_data_req() on TX path but what's the equivalent for RX?
I'm not quite sure how the transmit path should ever relate to signal quality measurements? -- - Harald Welte <laforge@gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)
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