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Hybrid automatic repeat request method and terminal equipment

A hybrid automatic retransmission and terminal equipment technology, applied in the field of communication, can solve the problems of increasing retransmission delay and power consumption

Active Publication Date: 2021-05-18
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this process, if the terminal device keeps monitoring the PDCCH, it will consume a lot of power; if the terminal device does not monitor it in time, it needs to wait for the retransmission in the next period, which will increase the retransmission delay

Method used

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  • Hybrid automatic repeat request method and terminal equipment
  • Hybrid automatic repeat request method and terminal equipment
  • Hybrid automatic repeat request method and terminal equipment

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Embodiment Construction

[0108] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0109] It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, wideband code division Multiple Access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (Gen...

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Abstract

Embodiments of the present invention propose a hybrid automatic repeat request method and terminal equipment. The method includes: acquiring a first uplink grant (UL grant) sent by a base station, the first uplink grant being carried in a media access control layer MAC message; performing uplink data transmission according to the first uplink grant, and starting a first timer ; After the first timer expires, start a second timer; according to the second timer, monitor the physical downlink control channel PDCCH. The hybrid automatic repeat request method and terminal device of the embodiments of the present invention can save power and reduce retransmission delay.

Description

technical field [0001] The present invention relates to the field of communication technologies, and more specifically, to a hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) method and terminal equipment. Background technique [0002] In a Long Term Evolution (LTE) system, a Hybrid Automatic Repeat Request (HARQ) is introduced to improve reliability of data transmission. Before transmitting data, the terminal device needs to access the network (that is, enter the connected state from the idle state). A random access process is introduced in LTE, wherein there are two types of random access, one is contention-based random access, and the other is non-contention-based random access. During the random access process, the terminal device needs to monitor a physical downlink control channel (Physical Downlink Control Channel, PDCCH) to perform HARQ transmission of data. In this process, if the terminal device keeps monitoring the PDCCH, it will consume a ...

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/1883H04L1/189H04W72/23H04W76/28H04L1/08H04L1/1812H04L1/1896H04W72/0446H04W74/0833
Inventor 酉春华黄曲芳
Owner HUAWEI TECH CO LTD
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