Patent ID: 6256487
Filing Date: 2001-07-03
Classification: H04L

Abstract:
A method for communicating mode information between a transmitter and a receiver in a communication system comprising the steps of:providing at least two different codec modes for processing said information in said transmitter, wherein said mode information is associated with said at least two different codec modes;coding, at said transmitter, said mode information with an error protection coding having a predetermined level of redundancy associated therewith;transmitting said coded mode information over an air interface;decoding, at said receiver, said coded mode information using a soft-output channel decoding process to generate a first likelihood parameter for each different potential value associated with said mode information;evaluating, at said receiver, a likelihood model associated with said mode information to generate a second likelihood parameter for each different potential value associated with said mode information, andselecting one of said different potential values for said received mode information based on both said first and second likelihood parameters, wherein said step of selecting further comprises:combining, at said receiver, said first and second likelihood parameters, andselecting said one of said different potential values having a highest combined likelihood.