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Transmission method and communication device

A transmission method and technology of a communication device, which are applied in the directions of separation device of transmission path, sub-channel allocation of transmission path, wireless communication, etc., can solve problems such as implementation complexity, achieve simplified behavior, improve resource utilization, and reduce implementation complexity. Effect

Active Publication Date: 2021-10-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the current technology, before the hybrid automatic repeat request (HARQ) feedback for transmitting downlink data in an unlicensed cell, the terminal device needs to perform a back-off-based channel access process to obtain a channel to transmit the HARQ for the downlink data. Feedback, the process is more complicated to implement

Method used

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  • Transmission method and communication device
  • Transmission method and communication device
  • Transmission method and communication device

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Embodiment Construction

[0095] The technical solution in this application will be described below with reference to the accompanying drawings.

[0096] The technical solutions of the embodiments of the present application can be applied to various communication systems, for example, but not limited to, narrow band-internet of things (NB-IoT), global system of mobile communication (GSM) systems, Code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), global interconnection microwave access (worldwide interoperability for microwave access (WiMAX) communication system, the future fifth generation (5th generation, 5G) system or new radio (new radio, NR), ...

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Abstract

The present application provides a transmission method and a communication device, which simplifies the LBT behavior of terminal equipment before HARQ feedback, and reduces implementation complexity. The method includes: receiving a first DCI, which is used to indicate or activate downlink transmission resources; receiving downlink data on the downlink transmission resources; receiving a second DCI, where the second DCI is used to indicate uplink transmission resources, and the uplink transmission resources are used for transmission Feedback information of downlink data; sending the feedback information on uplink transmission resources.

Description

technical field [0001] The present application relates to the communication field, and more specifically, to a transmission method and a communication device. Background technique [0002] In order to improve spectrum utilization, wireless communication systems can transmit data in unlicensed frequency bands. Communication devices, such as terminal devices or network devices, need to complete the channel access process (or in other words, listen before speaking) before data transmission. before talk, LBT)) to access the channel. The channel access process includes a fixed-duration-based channel access process and a back-off-based channel access process. After the channel access process is completed, the communication device can use the channel for a period of time, which is called the channel occupation time. (channel occupancy time, COT). [0003] In the current technology, before the hybrid automatic repeat request (HARQ) feedback for transmitting downlink data in an unl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/04H04W72/12H04L1/16
CPCH04L5/0053H04L1/1607H04W72/23H04L5/0055H04L5/0094H04L5/001H04W74/0808H04L1/1896H04L1/1854H04L1/1822Y02D30/70H04W72/0446H04W72/232H04W72/0457H04W76/28H04L1/1812H04L5/0098H04L1/004H04L1/1819H04W74/006H04W74/0816
Inventor 酉春华黄曲芳郭英昊娄崇
Owner HUAWEI TECH CO LTD