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Resource selection method for auxiliary link communication, and communication device

A technology of resource selection and auxiliary link, applied in the field of communication, which can solve the problems of V2X devices unable to successfully send data, unable to determine subframe y, and resource collision.

Active Publication Date: 2020-06-05
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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Problems solved by technology

However, aperiodic services are introduced in NR V2X communication. At this time, if the above-mentioned local resource awareness method is continued, the V2X device cannot determine whether subframe y is a resource reserved for aperiodic services by other V2X devices. The resources selected by the V2X device are likely to be resources reserved by other V2X devices for aperiodic services, resulting in resource collisions, which in turn cause the V2X device to fail to send data successfully

Method used

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  • Resource selection method for auxiliary link communication, and communication device
  • Resource selection method for auxiliary link communication, and communication device
  • Resource selection method for auxiliary link communication, and communication device

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Embodiment Construction

[0057] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this 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 creative efforts fall within the protection scope of this application.

[0058] In V2X communication, from the perspective of whether network devices need to be scheduled through high-level signaling, resource allocation methods are divided into scheduling resource allocation methods and perception-based resource selection methods. From the perspective of the perception range, the perception-based resource selection method is furt...

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Abstract

The embodiment of the invention provides a resource selection method for auxiliary link communication, and a communication device. In NR V2X communication, first terminal equipment selects Y time slots from a resource selection window, a time slot offset is determined by using the time slot with the smallest time slot serial number in the Y time slots, the initial time domain position of the resource sensing window is determined, then, each resource in the resource sensing window is sensed, time-frequency resources which are possibly occupied by second terminal equipment in the Y time slots according to the sensing result, and finally, the time-frequency resources for auxiliary link communication are selected from the time-frequency resources which are not occupied by the second terminal equipment in the Y time slots. By adopting the above scheme, resource collision is avoided by predicting whether the selected time-frequency resources are occupied by other terminal devices periodically, and the purpose of improving the success rate of auxiliary link data transmission is achieved.

Description

technical field [0001] The embodiments of the present application relate to the field of communication technologies, and in particular, to a resource selection method and a communication device for auxiliary link communication. Background technique [0002] Vehicle to everything (Vehicle to X, V2X) communication is a key technical direction of the 16th (Release 16, R16) version of the protocol. NR V2X, as an enhancement of Long Term Evolution (LTE) V2X, is the key to enabling the Internet of Vehicles Key technical means. [0003] In V2X communication, sidelink communication is performed between V2X devices through a sidelink. For V2X communication, there are two resource allocation methods. The first method is scheduled resource allocation. In this method, the base station configures resources for auxiliary link communication for V2X devices. This method mainly applies Mode (mode3) in LTE V2X communication and mode 1 in NR V2X communication; the second method is a resource...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/40H04L5/00
CPCH04W4/40H04L5/0082
Inventor 曲鑫
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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