Patent ID: 8249010

Claim:
A method for a base station to receive acknowledgement (ACK) information of semi-persistent scheduling (SPS) data packets, comprising: sending an plink data assignment indicator (UL DAI) to a User Equipment (UE), wherein the UL DAI indicates a number (N) of downlink data packets sent to the UE, wherein the number N is larger than one, and wherein a number k (k<N) of the downlink data packets is/are SPS data packets; and receiving from the UE a feedback signal comprising N acknowledgements/negative acknowledgements (ACKs/NAKs) acknowledging the N downlink data packets starting from the first ACK/NAK at the first position, 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.