Patent ID: 8270436

Claim:
A method of deciding the value of a boundary indicator transmitted from a transmitter to a receiver across a channel having varying quality, the boundary indicator having a statistically likely value or a statistically unlikely value, comprising: receiving a boundary indicator and decoding the boundary indicator to obtain a first value; monitoring a channel quality metric; if the channel quality metric is below a predetermined threshold and the first value is the statistically unlikely value, storing an indication of the first value and requesting a retransmission of the boundary indicator in response to the channel quality metric value and the statistically unlikely first value; receiving a retransmitted boundary indicator and decoding the boundary indicator to obtain a second value; if the second value matches the first value, deciding the value of the boundary indicator is the statistically unlikely value; and if the second value differs from the first value, deciding the value of the boundary indicator is the statistically likely value.