Patent ID: 8358621

Claim:
A method for a user equipment (UE) to feed back acknowledgement (ACK) information of semi-persistent scheduling (SPS) data packets, comprising: receiving an uplink data assignment indicator (UL DAI) from a base station (BS), wherein the UL DAI indicates a number (N) of downlink data packets sent by the BS, wherein the number N is greater than 1, and wherein a number k (k<N) of the downlink data packets is/are SPS data packets; forming a feedback signal comprising N acknowledgements/negative acknowledgements (ACKs/NAKs) acknowledging the N downlink data packets, wherein k ACKs/NAKs of the k SPS data packets is/are placed from (N−k+1)th to Nth positions of the N ACKs/NAKs in an uplink ACK/NAK multiplexing mode; and sending the feedback signal to the BS starting from the ACK/NAK at the first position.