Method, system and device for transmitting and receiving feedback information

Abstract

The embodiment of the invention relates to the technical field of wireless communication, in particular to a method, a system and a device for transmitting and receiving feedback information, which aims to solve the problem in the prior art that as the understanding to configuration between a base station and UE (User Equipment) within a reconfigurable fuzzy time interval is not consistent, the base station can not accurately receive the feedback information of the UE. The method for transmitting the feedback information provided by the embodiment of the invention comprises the step as follows: the UE determines to correctly receive a reconfiguration command from a network side on a downlink subframe k, feeds back a subframe m and subsequent downlink subframes according to the reconfigured PDSCH HARQ timing after PDSCH (Physical Downlink Shared Channel) HARQ (Hybrid Automatic Requestor) timing is reconfigured and changed and also feeds back downlink subframes before a subframe h according to PDSCH HARQ timing before reconfiguration. With the adoption of the technical scheme provided by the embodiment of the invention, the understanding to the configuration between the base station and the UE within a reconfigurable fuzzy time interval can be ensured to be consistent.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and device for sending and receiving feedback information. Background technique [0002] In the current LTE (Long Term Evolution, long-term evolution) system, there can only be one carrier in a cell, and the maximum bandwidth is 20Mhz, such as Figure 1A shown. [0003] For the LTE-A (LTE-Advanced, Enhanced Long Term Evolution) system, the peak rate of the LTE-A system has been greatly improved compared with the LTE system. The LTE-A system requires a downlink of 1Gbps and an uplink of 500Mbps. Obviously, the bandwidth of 20Mhz can no longer meet this demand. In order to meet the requirements of the LTE-A system, the CA (Carrier Aggregation, Carrier Aggregation) technology is introduced, that is, in the same cell, multiple continuous or discontinuous carriers are gathered together to serve the user equipment at the same time when needed, s...

AI Technical Summary

Problems solved by technology

[0014] The embodiments of the present invention provide a method, system and device for sending and receiving feedback information, which are used to solve the problem of consistent and inconsistent understanding of configuration between the base station and the UE during the ambiguous time period of reconfiguration in the prior art, resulting in The problem that the base station cannot correctly receive the feedback information of the UE

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