Method and equipment for achieving mixed automatic retransmission of request

Abstract

The invention provides a method and equipment for achieving mixed automatic retransmission of a request. The method for achieving mixed automatic retransmission of the request comprises confirming feedback timing of at least one downlink subframe which is adjacent with an uplink subframe in reference uplink and downlink configuration under the condition that a subframe of reference uplink and downlink configuration which corresponds to a conflict downlink subframe of a second area is the uplink subframe; confirming feedback timing of the conflict downlink subframe on a primary area according to feedback timing of at least one downlink subframe, wherein uplink and downlink configuration of the primary area is different from uplink and downlink configuration of the second area, the downlink subframe of the primary area is a subset of the downlink subframe of the reference uplink and downlink configuration; and sending or receiving feedback information of the conflict downlink subframe on the primary area according to the feedback timing. The method for achieving mixed automatic retransmission of the request is capable of using the feedback timing of the downlink subframe which is adjacent to the uplink subframe of the reference uplink and downlink configuration as the feedback timing of the conflict downlink subframe when the subframe, corresponding to the conflict downlink subframe, of the reference uplink and downlink configuration is the uplink subframe, and thus effectively sending uplink feedback on a parameterization cell (Pcell).

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communication, and more specifically, to a method and device for implementing Hybrid Automatic Repeat Request (HARQ, Hybrid Automatic Repeat Request). Background technique [0002] In the Long Term Evolution (LTE, Long Term Evolution) system, the minimum time interval for the base station (eNB, Evolved NodeB) to schedule the user equipment (UE, User Equipment) is a subframe, and the UE scheduled by the eNB will be included in a subframe The physical downlink control channel (PDCCH, Physical Downlink Control Channel), the PDCCH can be a downlink scheduling grant (DL_grant, Downlink_grant or an uplink scheduling grant (UL_grant, Uplink_grant). Wherein, the DL_grant or UL_grant sent by the eNB carries the physical downlink shared channel (PDSCH, Physical Downlink Shared Channel) or physical uplink shared channel (PUSCH, Physical Uplink Shared Channel) scheduling information. For Tim...

AI Technical Summary

Problems solved by technology

However, when the number of uplink subframes of PCell is less than the number of uplink subframes of SCell, the position of sending ACK / NACK found according to the timing relationship of SCell may be the downlink subframe of PCell, so it cannot be sent on PCell This type of uplink ACK / NACK information of SCell

[0005] Therefore, when the uplink and downlink configurations of the PCell and SCell of the CA are different, the PCell cannot be effectively used to send the uplink feedback of the SCell.

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