Patent ID: 6574769
Filing Date: 2003-06-03
Classification: H04L

Abstract:
A wireless telephone system, comprising:(a) a base unit coupleable to one or more external telephone lines and having a base transceiver; (b) at least one wireless handset having a handset transceiver for establishing a digital link with the base unit via the base transceiver over a wireless channel, characterized in that the digital link employs fixed size audio packets comprising a fixed number of audio data samples and a plurality of error correction bits each audio packet having one of a plurality of packet structures, the system further comprising: (c) means for monitoring the digital link for determining a change in a bit error rate of audio packets received over the channel by one of the handset and the base unit; and (d) means for changing a packet structure of subsequent audio packets, in response to the determination, so that said subsequent audio packets are of the fixed size and have a smaller number of bits devoted to each of the fixed number of audio data samples and a larger number of bits devoted to error correction if said error rate has increased and vice-versa if said error rate has decreased.