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Hybrid automatic repeat request HARQ feedback method, terminal and network device

A technology of hybrid automatic retransmission and network equipment, applied in the field of communication, can solve problems such as failure to send HARQ confirmation information feedback information, terminal channel unavailability, etc.

Active Publication Date: 2020-07-21
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a hybrid automatic repeat request HARQ feedback method, terminal and network equipment to solve the problem that the terminal may not be able to send HARQ confirmation information feedback information due to channel unavailability under unlicensed frequency band transmission

Method used

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  • Hybrid automatic repeat request HARQ feedback method, terminal and network device
  • Hybrid automatic repeat request HARQ feedback method, terminal and network device
  • Hybrid automatic repeat request HARQ feedback method, terminal and network device

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Embodiment Construction

[0026] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0027] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein can be practiced in sequences other than those illustrated or described...

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Abstract

The invention discloses an HARQ (Hybrid Automatic Repeat reQuest) feedback method, a terminal and a network device. The method comprises the following steps: acquiring DCI (Downlink Control Information) in a GC-PDCCH (Group Common Physical Downlink Control Channel-Physical Downlink Control Channel); and performing HARQ acknowledgement information feedback according to the DCI. After the terminal misses the feedback position specified by the network device, the feedback of the HARQ acknowledgement information can be triggered according to the DCI, and the normal operation of the HARQ acknowledgement information feedback process is ensured. Furthermore, the DCI is carried in the GC-PDCCH, HARQ acknowledgement information feedback of a plurality of terminals can be triggered at the same time,and the overhead of the DCI is saved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a HARQ feedback method, a terminal and a network device. Background technique [0002] When transmitting in the unlicensed frequency band, before sending information, the terminal or network device needs to perform Clear Channel Assessment (CCA) or Extended Clear Channel Assessment (eCCA) to monitor the channel, that is, perform energy detection (Energy Detection, ED), when the energy is lower than a certain threshold, the channel is judged to be empty, and the transmission can start. Since the unlicensed frequency band is shared by multiple technologies or multiple transmission nodes, this contention-based access method leads to uncertainty in the available time of the channel. At the time position specified by the network device, the channel may not be available, and the terminal cannot send the corresponding Hybrid Automatic Repeat Request acknowledgment inform...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04H04L1/18
CPCH04L5/0053H04L1/1812H04W72/23H04L5/0094H04L5/0055H04L27/0006H04L1/1896H04L1/1685H04L1/1861
Inventor 杨昂沈晓冬
Owner VIVO MOBILE COMM CO LTD
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