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Method, system and device for transmitting and receiving feedback information

A technology of feedback information and correct reception, which is applied to the separation device of the transmission path, transmission system, digital transmission system, etc., can solve the problems of inconsistent configuration and the inability of the base station to receive UE feedback information correctly, and achieve the goal of improving system performance and transmission efficiency Effect

Active Publication Date: 2014-09-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method, system and device for transmitting and receiving feedback information
  • Method, system and device for transmitting and receiving feedback information
  • Method, system and device for transmitting and receiving feedback information

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Embodiment Construction

[0046] According to the embodiment of the present invention, the user equipment and the network side equipment feed back the downlink subframes in the subframe m and subsequent subframes according to the reconfigured PDSCH HARQ timing, and perform feedback on the downlink subframes in the subframes before the subframe h , Feedback is performed according to the PDSCH HARQ timing before reconfiguration; where subframe h and subframe m are after uplink subframe n, and subframe h is before subframe m or subframe h is subframe m, and uplink subframe n is sending The uplink subframe of the feedback information corresponding to the reconfiguration command. Since the effective time of reconfiguration is defined (that is, subframe m and subframe h), the base station and UE work at the same time, which can ensure the understanding of configuration between the base station and UE during the reconfiguration fuzzy time period consistent, so that the base station can correctly receive the f...

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Abstract

The present application relates to the technical field of wireless communications, and more particularly to a method, system and device for sending and receiving feedback information, which are used for solving the problem that a base station cannot correctly receive the feedback information about UE because the base station and the UE have different understandings of configurations within a reconfiguration fuzzy time period in the prior art. The method for sending feedback information in the present application comprises: user equipment determining that a reconfiguration command from a network side is correctly received on a downlink subframe k, and after reconfiguring to change PDSCH HARQ timing, feeding back a subframe m and a downlink subframe thereafter in accordance with the PDSCH HARQ timing after reconfiguration, and feeding back a downlink subframe before a subframe h in accordance with the PDSCH HARQ timing before reconfiguration. The solution of the present application can ensure consistent understanding of configurations of a base station and UE within a reconfiguration fuzzy time period.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/16H04L5/00H04L1/00
CPCH04L5/1469H04L1/0072H04L5/001H04L1/1861H04L5/0087H04L5/0092H04L1/1854
Inventor 林亚男沈祖康司倩倩
Owner DATANG MOBILE COMM EQUIP CO LTD
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