Patent ID: 7693115

Claim:
A method of transmitting a plurality of sub packets in a communication device using hybrid automatic repeat request, the method comprising: forming an encoded data packet generated by encoding information to be transmitted; generating a first sub packet having a first sub packet identifier from the encoded data packet, wherein the first sub packet is generated from an initial start point within the encoded data packet; transmitting the first sub packet before any other sub packets having a sub packet identifier other than the first sub packet identifier; generating at least one sub packet from the encoded data packet; and transmitting the at least one sub packet, wherein each of the at least one sub packet has a specific length and a specific sub packet identifier selected from among the first sub packet identifier, a second sub packet identifier, a third sub packet identifier and a fourth sub packet identifier in any order, and wherein each of the at least one sub packet is generated from a specific start point determined based on a value resulting from multiplying the specific sub packet identifier and the specific length within the encoded data packet.