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Downlink control information transmission method and device in ultra-reliable and low latency communications

A reliable technology for controlling information, applied in the field of communication, can solve problems such as missed detection, poor signal transmission performance, DCI transmission failure, etc., and achieve the effect of improving reliability, reducing bit rate, and easy reception

Active Publication Date: 2018-11-06
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when the UE misses DCI detection, the base station repeatedly sends the DCI according to the pre-configured number of times, and does not adjust the DCI sending method. If the signal transmission performance on the time-frequency domain resource block where the DCI is sent is not good, the Sending DCI on this time-frequency domain resource block may cause DCI transmission to fail again and again, and may also cause missed detection
Therefore, the transmission reliability of DCI in the existing URLLC system is not very high

Method used

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  • Downlink control information transmission method and device in ultra-reliable and low latency communications
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  • Downlink control information transmission method and device in ultra-reliable and low latency communications

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0044] The embodiment of the present invention also provides a method for transmitting downlink control information in ultra-high reliability and ultra-low time communication, and the method can be implemented jointly by the user equipment and the server. Such as figure 1 As shown, the method may include the following steps:

[0045] Step 101, the base station sends downlink control information to the user equipment.

[0046] In implementation, when the base station needs to send ...

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Abstract

The embodiment of the present invention provides a downlink control information (DCI) transmission method and device in ultra-reliable and low latency communications (URLLC), belonging to the technical field of communication. The method comprises the steps of: sending downlink control information to a user device by a station; receiving the downlink control information sent by the station throughthe user device; performing decoding of the downlink control information by the user device, and feeding back the decoding result of the downlink control information to the station. If the station receives the decoding result, showing the correct decoding of the downlink control information, sent by the user device, the transmission of the downlink control information is successful, or else, the downlink control information is sent again to the user device according to a preset downlink control information retransmission policy. The reliability of transmission of the downlink control information can be improved.

Description

technical field [0001] The present application relates to the field of communication technology, in particular to a method and device for transmitting downlink control information in ultra-high reliability and ultra-low time communication. Background technique [0002] URLLC (Ultra-Reliable and Low Latency Communications, Ultra-Reliable and Ultra-Low Latency Communications) is a communication scenario in wireless communication, mainly for business scenarios with high latency requirements and high reliability. The specific services include: automatic Driving, assisted driving, industrial automatic control and high-priority critical communication, etc. [0003] The data transmission process in the existing URLLC system is: the base station sends DCI (Downlink Control Information, downlink control information); UE (User Equipment, user equipment) receives the DCI, and sends / receives data packets on the time-frequency domain resources indicated by the DCI; The receiving end rec...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0007H04L5/0055H04W72/23
Inventor 赵中原刘春花沙桐王君李勇
Owner BEIJING UNIV OF POSTS & TELECOMM