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Method and system for determination of number of V2X message blind retransmission and decision node

A technology of retransmission times and decision nodes, applied in the field of V2X

Inactive Publication Date: 2017-11-17
BEIJING XINWEI TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because in different V2X scenarios, the values ​​of parameters such as vehicle speed and density that directly affect transmission performance have a large fluctuation range, using a set of fixed retransmission times configurations has certain limitations in various scenarios.

Method used

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  • Method and system for determination of number of V2X message blind retransmission and decision node
  • Method and system for determination of number of V2X message blind retransmission and decision node
  • Method and system for determination of number of V2X message blind retransmission and decision node

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Embodiment 1

[0058] figure 1 It is a method flow chart of a method for determining the number of blind retransmissions of a V2X message provided by Embodiment 1 of the present invention. This embodiment is applicable to the case of adaptively determining the number of blind retransmissions of a message in different V2X scenarios in a V2X system. The method can be executed by a V2X system with a decision node, and specifically includes the following steps:

[0059] S110, the decision node obtains the retransmission times determination parameter of the given message of the given node through a preset configuration mode.

[0060] Wherein, the given node is any node in the V2X system, and the decision-making node includes one or more of a given point, a preset base station, and a preset node. One or several arbitrary combinations of other base stations that are subordinate, and the preset node can be one or several arbitrary combinations of RSU nodes with scheduling functions or rights, and o...

Embodiment 2

[0069] figure 2 It is a method flow chart of a method for determining the number of V2X message blind retransmission times provided by Embodiment 2 of the present invention. In this embodiment, on the basis of the above-mentioned embodiments, it is preferable to further optimize the preset algorithm of S120 as a decision node , base station, core network or decision node configuration.

[0070] S210: The decision-making node acquires a parameter for determining the number of retransmission times of a given message of a given node through a preset configuration method. The implementation process of this step is consistent with the implementation of S110, and will not be repeated here.

[0071] S220: The decision node obtains the number of retransmission times of a given message according to the algorithm configured by the decision node, the algorithm configured by the base station, the algorithm configured by the core network, or the algorithm configured by the high layer of ...

example 1

[0074] V2X node Node#1 needs to obtain the retransmission times of the periodic message of this node:

[0075] The decision nodes are the base station to which Node#1 is connected and Node#1 itself;

[0076] Node Node#1 reports the local decision parameters to the base station, and the reported content includes:

[0077] Attribute parameters of Node#1: the current speed of the node, the node type is Vehicle, the service type is periodic message, and the message type is a combination of control message + data message;

[0078] The measurement result parameters of Node#1: the number of V2X neighbor nodes that the node can detect currently, and the average received power on the resource pool dedicated to base station scheduling;

[0079] The parameters judged by Node#1 based on the current speed of the node: the scene type is expressway;

[0080] The parameters obtained by the decision node according to the attribute parameters: according to the resource scheduling status maint...

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Abstract

The present invention discloses a method and system for determination of the number of V2X (Vehicle to X) message blind retransmission and a decision node. The method comprises: a decision node obtain the determination parameters of the number of the retransmission of the given message of a given node through a preset configuration mode, and the determination parameters of the number of the retransmission comprise one or more than one of given node attribute parameters, decision node attribute parameters, given node measurement result parameters, decision node measurement result parameters and pre-configuration parameters; and the decision node obtains the number of the retransmission of the given message through a preset algorithm according to the determination parameters of the number of the retransmission. The method and system for determination of the number of V2X message blind retransmission and the decision node perform adaptive regulation of the number of the retransmission in the V2X message blind retransmission mechanism and introduce the adaptive retransmission number regulation mechanism into the system to strive for considerable performance optimization space for the system and optimize the message priority processing and QoS guarantee mechanism in the system.

Description

technical field [0001] Embodiments of the present invention relate to V2X technology, and in particular to a method, a system and a decision node for determining the number of blind retransmission times of a V2X message. Background technique [0002] V2X (Vehicle to X) is the key technology of intelligent transportation system. It enables communication between vehicles, vehicles and base stations, and base stations. In order to obtain a series of traffic information such as real-time road conditions, road information, and pedestrian information, so as to improve driving safety, reduce congestion, improve traffic efficiency, and provide in-vehicle entertainment information. At present, the widely used benchmark solutions include 3GPP V2X technology, etc. [0003] Currently, in the 3GPP V2X technology, any given communication message always uses a retransmission mechanism with a fixed number of blind retransmissions. [0004] Because in different V2X scenarios, the values ​​...

Claims

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Application Information

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IPC IPC(8): H04L1/18
Inventor 周淼孙鹏
Owner BEIJING XINWEI TELECOM TECH