Network echo suppression in mobile stations

Details Network echo suppression in mobile stations Network echo suppression in mobile stations

2005-05-03

2005-05-03

Gary, Erika A. (Department: 2681)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C379S406100, C379S406070

Reexamination Certificate

active

06889066

ABSTRACT:
In one embodiment, a mobile station such as a dual-mode, AMPS and CDMA, handset communicates with an AMPS base station in a wireless communication system. The mobile station includes an acoustic echo canceller, which can detect acoustic echo, for example, feedback from the handset speaker to the handset microphone, during communication between the mobile station and the base station, and cancel or eliminate the acoustic echo. The mobile station also includes a network echo suppressor coupled to the acoustic echo canceller. For example, the network echo suppressor can read a parameter set by the acoustic echo canceller. The network echo suppressor attenuates or mutes a network echo caused by portions of the communication returning to the mobile station from the base station after a network propagation delay. Coupling the network echo suppressor to the acoustic echo canceller ensures proper interaction between the network echo suppressor and acoustic echo canceller.

REFERENCES:
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5343521 (1994-08-01), Jullien et al.
patent: 5416829 (1995-05-01), Umemoto
patent: 5526426 (1996-06-01), McLaughlin
patent: 5764753 (1998-06-01), McCaslin et al.
patent: 5838787 (1998-11-01), Ding et al.
patent: 6148078 (2000-11-01), Romesburg
patent: 6185300 (2001-02-01), Romesburg
patent: 6249581 (2001-06-01), Kok
patent: 6622030 (2003-09-01), Romesburg et al.

Affiliated with

Also associated with

Rating

Network echo suppression in mobile stations does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Network echo suppression in mobile stations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Network echo suppression in mobile stations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3416381