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A wireless link resource management method in intelligent transportation

A wireless link and resource management technology, applied in the field of wireless link resource management in intelligent transportation, to achieve the effect of improving throughput

Inactive Publication Date: 2019-03-19
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of how to reasonably and efficiently utilize limited bandwidth resources for intelligent road management, and proposes a wireless link resource management method in intelligent transportation, and innovates the working mechanism of intelligent roads from two aspects

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  • A wireless link resource management method in intelligent transportation
  • A wireless link resource management method in intelligent transportation
  • A wireless link resource management method in intelligent transportation

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Embodiment Construction

[0022] The wireless link resource management method in intelligent transportation proposed by the present invention is suitable for communication between wireless nodes on intelligent roads. The focus is on how to ensure the fairness between nodes in the limited wireless link resources to realize a service differentiation of data with different importance levels.

[0023] The present invention is mainly divided into two parts, one part is to realize the direct fairness of wireless nodes through the bandwidth estimation algorithm, and the second part is to realize the service differentiation of different priority data through the resource reservation model.

[0024] In the bandwidth estimation algorithm, a node A maintains two variables W eo and W ei , representing the estimation of the bandwidth occupied by other nodes and the bandwidth occupied by this node, respectively. When node A receives the RTS frame, it judges whether it is sent to itself according to the destination...

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Abstract

The invention relates to a wireless link resource management method in smart traffic, and innovates the working mechanism of smart roads from two aspects. One is to realize the direct fairness of wireless nodes through the bandwidth estimation algorithm, and innovate from the perspective of fairness between nodes, so as to avoid some nodes getting more bandwidth, while some nodes cannot get bandwidth, and are always starving The other is to realize the service differentiation of different priority data through the resource reservation model, and innovate from the differentiated service of different priority data, so that the data flow with higher priority can be sent out at a faster speed. On the premise of ensuring fairness, the overall throughput can be improved.

Description

technical field [0001] The invention relates to a computer network technology, in particular to a method for managing wireless link resources in intelligent transportation. Background technique [0002] In recent years, the problem of traffic congestion has attracted more and more attention from all over the world. For this reason, the construction concept of Intelligent Road (iRoad for short) came into being, which provides a direction and means to solve the problem for improving traffic. For example, the monitoring system can transmit real-time video signals and traffic data of traffic intersections to the general control room, which is a good control method, but if this measure is applied to each traffic intersection, the cost will undoubtedly be huge, because excavation is required pavement, laying cables, etc. Therefore, low-cost wireless solutions are more attractive. Existing wireless technology can be used to customize wireless devices (called smart nodes, also cal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12
CPCH04W72/52H04W72/569
Inventor 陈世平林涵仙
Owner UNIV OF SHANGHAI FOR SCI & TECH