Patent ID: 9705641
Date: 2017-07-11
CPC Classifications: H04J,H04L,H04W

Claim:
1. A method for sending answer information, comprising: when a frequency division duplex (FDD) and a time division duplex (TDD) aggregate, where a TDD cell works as a primary serving cell and a FDD cell works as a secondary serving cell, a user equipment (UE) grouping downlink subframes of a FDD secondary serving cell, and using different hybrid automatic repeat request (HARQ) timing relationships for different downlink subframe groups, determining uplink subframes where HARQ-ACK acknowledgment messages corresponding to physical downlink shared channels (PDSCH) transmitted on respective downlink subframe groups are carried, and transmitting the HARQ-ACK messages on the determined uplink subframes; wherein, said grouping the downlink subframes of the FDD secondary serving cell comprises: grouping the downlink subframes of the FDD secondary serving cell according to an uplink and downlink configuration of the primary serving cell participating in the aggregation; wherein, grouping the downlink subframes of the FDD secondary serving cell according to the uplink and downlink configuration of the primary serving cell participating in the aggregation, and determining the uplink subframes where the HARQ-ACK acknowledgment messages corresponding to the PDSCH transmitted on respective downlink subframe groups are carried comprises: the downlink subframe contained in the group 3 is {2}, the uplink subframes where the HARQ-ACK messages corresponding to the PDSCH of the downlink subframe in the group 3 are carried are uplink subframes which have an interval of at least three subframes with the downlink subframe in the group 3.