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Hybrid automatic repeat request HARQ feedback method and apparatus

A hybrid automatic retransmission and terminal configuration technology, applied in the field of communication, can solve the problems of inability to apply the communication system, unsuccessful terminal competition, etc.

Active Publication Date: 2019-03-19
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] But on the unlicensed spectrum, terminals need to compete to use the channel
If the base station instructs the terminal to perform HARQ result feedback in a certain BWP (Bandwidth Part, bandwidth part), but the terminal fails to compete for the current channel, that is, the terminal cannot perform HARQ result feedback through the BWP specified by the base station
[0005] To sum up, the method of feedbacking HARQ results at a predefined position or sending instruction information through the base station to instruct the terminal to perform resource information of HARQ results cannot be applied to communication systems working in unlicensed spectrum

Method used

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  • Hybrid automatic repeat request HARQ feedback method and apparatus
  • Hybrid automatic repeat request HARQ feedback method and apparatus
  • Hybrid automatic repeat request HARQ feedback method and apparatus

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[0247] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0248] The terminology used in the present disclosure is for the purpose of describing particular embodiments only, and is not intended to limit the present disclosure. As used in this disclosure and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the ...

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Abstract

The present disclosure provides a hybrid automatic repeat request HARQ feedback method and apparatus. The hybrid automatic repeat request HARQ feedback method includes the steps: configuring target indication information for a terminal, wherein the target indication information is used to indicate frequency domain resource identification information corresponding to at least one first alternativefrequency domain resource; sending the target indication inforamtion to the terminal; and after sending a physical downlink shared channel (PDSCH) to the terminal, receiving an HARQ result, for the PDSCH, that is fed back by the terminal through the target frequency domain resource, wherein the target frequency domain resource is a frequency domain resource determined by the terminal to carry theHARQ result in the preset frequency domain resource and the at least first alternative frequency domain resource. The hybrid automatic repeat request HARQ feedback method may be performed in a communication system of an unlicensed spectrum, so that the terminal side may determine a target frequency domain resource for performing HARQ result feedback in the preset frequency domain resource and theat least second candidate frequency domain resource based on the target indication information configured by a base station.

Description

technical field [0001] The present disclosure relates to the communication field, and in particular to a hybrid automatic repeat request (HARQ) feedback method and device. Background technique [0002] In an LTE (Long Term Evolution, long-term evolution) system, there is a time delay between data transmission and HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) result feedback. [0003] In 5G NR (New Radio, new air interface), a new mechanism is introduced. When the terminal performs HARQ feedback on the PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) delivered by the base station, the base station can first send the HARQ feedback to the downlink. The indication information is added to the scheduling signaling, and the indication information is used to instruct the terminal to bear the resource information of the HARQ result. [0004] But on the unlicensed spectrum, terminals need to compete to use the channel. If the base ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/18
CPCH04L1/0023H04L1/1812H04L1/1896H04L1/1861H04L5/0055H04L1/1671H04L5/0092H04W72/0453H04W72/1273H04W72/23
Inventor 朱亚军
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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