Downlink HARQ feedback method, device and terminal based on dynamic frame structure

A feedback device and frame structure technology, applied in the field of communication, can solve problems such as stable and orderly transmission of downlink data

Active Publication Date: 2017-01-04
YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in fully dynamic TDD, there is no complete set of downlink HARQ feedback timing to ensure stable and orderly transmission of downlink data

Method used

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  • Downlink HARQ feedback method, device and terminal based on dynamic frame structure
  • Downlink HARQ feedback method, device and terminal based on dynamic frame structure
  • Downlink HARQ feedback method, device and terminal based on dynamic frame structure

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Embodiment Construction

[0056] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0057] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0058] In the technical solution of the present invention, a dynamic frame structure adopted on an unlicensed frequency band is first proposed. Specifically, the period of the dynamic change of the su...

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Abstract

The invention provides a downlink HARQ feedback method, device and terminal based on a dynamic frame structure, and each frame structure just comprises uplink subframes and downlink subframes. Moreover, the subframes of the same type in each frame structure are set continuously. The method comprises the steps: judging whether the frame structure employed currently needs to be reconfigured or not; determining the uplink subframe, which carries out the downlink HARQ feedback, corresponding to each downlink subframe according to the frame structure employed currently if the frame structure employed currently does not need to be reconfigured; determining the uplink subframes, which carry out the downlink HARQ feedback and are corresponding to the downlink subframes in the last wireless frame, before a reconfiguration time point according to a first frame structure employed before the reconfiguration time point and a second frame structure to be used if the frame structure employed currently needs to be reconfigured; and transmitting the HARQ feedback information for the downlink data at the uplink subframe, which is corresponding to any downlink subframe and carries out the HARQ feedback if the downlink data transmitted by a base station at any downlink subframe is received.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular, to a downlink HARQ feedback method based on a dynamic frame structure in an unlicensed frequency band, a downlink HARQ feedback device based on a dynamic frame structure in an unlicensed frequency band, and a terminal. Background technique [0002] With the rapid increase of communication traffic, the 3GPP authorized spectrum is increasingly insufficient to provide higher network capacity. In order to further improve the utilization of spectrum resources, 3GPP proposes the concept of LAA (LTE Assisted Access, LTE Assisted Access), which is used to use unlicensed spectrum with the help of LTE (Long Term Evolution, Long Term Evolution) licensed spectrum. In order to make the LTE system coexist harmoniously with different systems such as Wi-Fi on the unlicensed frequency band, 3GPP proposed the LBT (Listen Before Talk, Listen Before Talk) mechanism to ensure that the un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04L1/16H04L1/18
CPCH04L1/1607H04L1/1812H04L5/0055H04W16/14H04L5/0007H04L5/1469H04L5/0096H04L1/1893H04L1/1854H04L1/18H04L1/1819H04W72/0446H04W72/0453
Inventor 刘是枭钟焰涛郭雄伟
Owner YULONG COMPUTER TELECOMM SCI (SHENZHEN) CO LTD
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