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robert robert.steve07 at gmail.comThank you. On May 14, 2016, at 1:59 AM, Harald Welte <laforge at gnumonks.org> wrote: > Hi Robert, > > On Fri, May 13, 2016 at 07:19:14PM +0300, robert wrote: >> In a talk presented by Chris Paget [1] he states that the BTS can tell >> the MS to add a certain power amount to the signal that it has >> measured. > > That's not quite correct. The BTS can basically instruct a MS at any > time to transmit any of the MS power levels supported by the specific MS > power class in a given band. > >> Is this feature implemented in OpenBSC ? > > No, because it is fundamentally a feature of the BTS, not the BSC. The > power control loop is implemented inside the BTS. > > OsmoBTS implements the power control loop. Normally it is possible to > override the MS power level with some static level via the RSL protocol > betewen BSC and BTS, but we don't implement that part. > > The easiest way to force a MS to transmit with higher power (if that's > what you want) is to influence the power control loop inside the > BTS, either by changing the code, or (on the osmo-bts-sysmo) you can > change the 'target uplink signal level as received by the BTS' to > something ridiculously high like -30 dBm, and then the loop will try to > make sure to reach that level. As that's virtually impossible, the MS > will transmit at its maximum supported power level. > > -- > - Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/ > ============================================================================ > "Privacy in residential applications is a desirable marketing option." > (ETSI EN 300 175-7 Ch. A6)