Multiplex communications – Communication techniques for information carried in plural... – Adaptive
Patent
1997-09-05
1999-04-27
Olms, Douglas W.
Multiplex communications
Communication techniques for information carried in plural...
Adaptive
370342, 370479, 370441, H04J 316
Patent
active
058986960
ABSTRACT:
A method and system for controlling an encoding rate in a communication system utilizes feedforward rate information (48) and/or rate desirability information (50) sent from each of a plurality of variable rate vocoders (34) to a communication link output controller (24), such as a network arbitor. The communication link output controller (24) then sends a feedback control signal (32) to a selected variable rate vocoder to change the encoding rate of the selected variable rate vocoder to facilitate re-encoding of the speech packet when a bottleneck is detected. In another embodiment, the network arbitor (134) may additionally and independently modify speech packet data when it determines that a bottleneck may occur. The network arbitor (134) also communicates a packet modification control signal (132) for the variable rate vocoder that generated the dropped packet so that the corresponding variable rate vocoder can adjust its filter states to maintain convergence.
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Ashley James Patrick
Proctor Lee Michael
Beladi Sayed Hossain
Hom Shick
Motorola Inc.
Olms Douglas W.
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