Patent ID: 8972827
Filing Date: 2015-03-03
Classification: H04B,H04L,H04W

Abstract:
1. A method comprising: storing received samples and channel estimates from previous ARQ transmissions in an ARQ buffer; receiving pilot samples in a receive buffer; estimating an effective channel of a user terminal based on received pilot samples from the receive buffer to generate a channel estimate; computing an achievable rate based on the channel estimate and feeding back information to a base station on the achievable rate by an end of a current transmission scheduling cycle; determining whether a packet can be decoded based on k received ARQ blocks for a plurality of ARQ blocks generated for the packet, wherein the k received ARQ blocks comprise samples for the k-th ARQ block for the packet from the receive buffer and samples for previously received k−1 ARQ blocks for the packet, where k is an integer equal to 1 or greater; decoding the packet and sending back an acknowledgement (ACK) signal as feedback if determining the packet is decodable based on the k ARQ blocks; and storing the k-th ARQ block in the ARQ buffer and sending a negative acknowledgement (NACK) signal as feedback if determining the packet is not decodable based on the k ARQ blocks.