Patent ID: 8332713

Claim:
A communication method using a code packet in a wireless network, comprising: (a) transmitting packets having serial numbers to a first mobile terminal and a second mobile terminal; (b) receiving a first negative acknowledgement (NAK) of the first mobile terminal from the first mobile terminal; (c) receiving a second NAK of the first mobile terminal or a second NAK of the second mobile terminal, without receiving a first NAK of the second mobile terminal generated when the second mobile terminal does not receive the packet for the first time and generated after the first NAK of the first mobile terminal; and (d) transmitting a restoration packet to the first and second mobile terminals; an (e) step after the d step, setting restoration period, wherein the restoration period includes a first restoration period that defined with serial numbers of multicast packets prior to a multicast packet corresponding to the second NAK received in the (c)step and a second restoration period that defined with serial numbers of multicast packets after the multicast packet corresponding to the second NAK received in the (c) step, and the second NAK received in the (c) step recognizes is set up as an initial NAK of the second restoration period.