Patent ID: 8514883
Filing Date: 2013-08-20
Classification: H04L

Abstract:
1. A method for sending hybrid automatic repeat request (HARQ) feedback for a plurality of codewords, the method comprising: receiving and decoding downlink control channels; determining physical uplink control channel (PUCCH) resources for sending the HARQ feedback using PUCCH format 1b and channel selection; receiving a plurality of codewords based on information on the decoded downlink control channels; decoding the codewords; determining positive/negative acknowledgements (ACK/NACKs) for the codewords based on decoding results of the codewords; grouping the ACK/NACKs into a plurality of groups; generating a bundled ACK/NACK for each group of ACK/NACKs, wherein a bundled ACK is generated on a condition that all codewords belonging to the group are successfully decoded and a bundled NACK is generated on a condition that at least one codeword belonging to the group is not successfully decoded; for each group of the plurality of groups, selecting one of the PUCCH format 1b resources and antenna combination, and setting the HARQ feedback, based on bundled ACK/NACKs, wherein a different PUCCH format 1b resource and antenna combination is selected based on the bundled ACK/NACKs; and transmitting the HARQ feedback bits via the selected PUCCH format 1b resource and antenna combination.