Patent ID: 9602250
Date: 2017-03-21
CPC Classifications: H04L

Claim:
1. A method for retransmitting data in wireless communication system of H-FDD (Half-Frequency Division Duplex), the method performed by a mobile station (MS) and comprising: receiving, from a base station (BS), a NACK (Not-ACKnowledge) signal for an uplink data transmission; determining a first uplink subframe, which has a subframe index 0 in an uplink frequency band, for retransmitting the uplink data based on the NACK signal; receiving, from the BS, a superframe header (SFH) in a first downlink subframe of a first frame of a first superframe in a downlink frequency band, wherein the first downlink subframe is overlapped in time with the first uplink subframe and the first uplink subframe for retransmitting the uplink data is punctured to receive the SFH; and retransmitting, to the BS, the uplink data in a second uplink subframe which has a subframe index 1 in the uplink frequency band, instead of the first uplink subframe which has the subframe index 0, wherein indices of uplink subframes are increased by 1, in ascending order from 0, and the second uplink subframe which has the subframe index 1 is a subsequent subframe of the first subframe which has the subframe index 0, and wherein indices of uplink subframes other than the first uplink subframe are maintained regardless of puncturing of the first uplink subframe.