FIELD: radio engineering, communication.
SUBSTANCE: invention relates to radio communication systems. A base station receives signal quality information reports from mobile stations every 480 ms using the slow associated control channel (SACCH) and receives codec mode requests from the mobile stations every 40 ms using adaptive multi-rate (AMR) in-band signalling. The base station associates the requested codec modes with estimated levels of speech quality currently being experienced by the first and second mobile stations.
EFFECT: controlling subchannel transmission power and allocating code modes for a first and a second mobile station based on estimated levels of speech quality associated with requested codec modes, and signal quality reports.
10 cl, 5 dwg
