Patent ID: 7346037

Claim:
A method of determining a starting point of a k-th sub packet in a communication device using hybrid automatic repeat request, the method comprising: receiving a plurality of sub packets through a packet data channel; receiving a plurality of control information through a packet data control channel, wherein the control information includes sub packet identifier (SPID k ) of the k-th sub packet, N EP corresponding to a number of bits in an encoder packet, N walsh,k corresponding to a number of N-chip Walsh channels of the k-th sub packet, N slots,k corresponding to number of slots for the k-th sub packet; and determining a starting point F k of the k-th sub packet based on the following: F k =(SPID k *L k )mod(n*N EP ), wherein L k =a constant value *N walsh,k *N slots,k *m k , where n is a prescribe value and m k correspond to a modulation order for the k-th sub packet.