Patent ID: 9729280
Date: 2017-08-08
CPC Classifications: H04L

Claim:
1. A method comprising: transmitting a codeword using an initial modulation scheme, wherein the codeword is encoded with a rateless code and is part of a sequence of codewords; monitoring a first time interval for transmission of a next codeword after the codeword is transmitted; determining whether an indication signal has been received within the first time interval; determining whether the indication signal indicates reliable receipt or unreliable receipt of the transmitted codeword; counting a number of indication signals indicating unreliable receipt over a second time interval; determining, upon expiration of the second time interval, if said number of indication signals indicating unreliable receipt is greater than or equal to a value; modifying the initial modulation scheme for transmitting the next codeword in the sequence of codewords if it is determined that the number of indication signals is greater than or equal to the value, wherein the next codeword is encoded with the rateless code; and upon expiration of the first time interval and a determination that no indication signal was received within the first time interval transmitting the next codeword without retransmitting the codeword using the initial modulation scheme, and upon determining the indication signal was received within the first time interval and the indication signal indicates unreliable receipt, transmitting the next codeword using the modified modulation scheme prior to the expiration of the first time interval.