Network echo suppression in mobile stations

A method comprising steps of:

• coupling a plurality of acoustic echo canceller parameters from an acoustic echo canceller to a network echo suppressor;
• determining a voice activity parameter;
• computing a coherence estimate on a block of transmit signal samples and on a block of receive signal samples to detect a network echo, wherein each block of samples comprises samples from a previous block and new samples;
• providing said voice activity parameter and said coherence estimate to said network echo suppressor;
• and
• attenuating said network echo with said network echo suppressor, wherein said attenuated network echo is passed to said acoustic echo canceller.

A method for communicating between a base station and a mobile station, said method comprising steps of:

• determining a voice activity parameter of said communication;
• computing a coherence estimate on a block of transmit signal samples of said communication and on a block of receive signal samples of said communication to detect a network echo, wherein each block of samples comprises samples from a previous block and new samples;
• ascertaining a plurality of acoustic echo canceller parameters from an acoustic echo canceller;
• providing said voice activity parameter, said coherence estimate, and said plurality of acoustic echo canceller parameters to a network echo suppressor;
• and
• attenuating said network echo with said network echo suppressor, wherein said attenuated network echo is passed to said acoustic echo canceller.