Efficient bandwidth allocation method based on parking vehicle roadside unit

An allocation method and bandwidth technology, applied in the field of Internet of Vehicles, can solve problems such as the optimization goal of the overall task end time of the system, and achieve the effect of improving bandwidth efficiency and reducing distribution delay.

Pending Publication Date: 2022-07-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Most of the current bandwidth allocation methods based on roadside units of parked vehicles aim to minimize power or maximize system throughput, but they do not take the overall task end time of the system as the optimization goal.

Method used

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  • Efficient bandwidth allocation method based on parking vehicle roadside unit
  • Efficient bandwidth allocation method based on parking vehicle roadside unit
  • Efficient bandwidth allocation method based on parking vehicle roadside unit

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Embodiment Construction

[0053] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] The present invention proposes a PCRSU-based bandwidth efficient allocation method, and the embodiments are described in detail below with reference to the accompanying drawings.

[0055] The implementation of the present invention is divided into two steps, the first step is to establish a system model, and the second step is to imple...

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Abstract

The invention discloses an efficient bandwidth allocation method based on a parking card Roadside unit (PCRSU), and the method comprises the following steps of: (1) carrying out bandwidth allocation on the basis of the parking card Roadside unit (PCRSU); the scheme comprises the following steps of: firstly, initializing a system and calculating a vehicle channel gain; then, a convex optimization method is used for calculating the bandwidth and power optimal distribution proportion of all vehicle users according to the transmission data volume required by the users; and performing data transmission on each user according to the calculated distribution result. And finally, after the transmission of one user is completed, in order to further improve the bandwidth efficiency, allocating the idle bandwidth and power to the users which do not complete the transmission for data transmission until all the used users complete the data transmission. Under the condition that the overall resource of the system is limited, network resources are distributed according to actual requirements by sensing the data volume needing to be transmitted by a user, and the overall data distribution time delay is effectively reduced.

Description

technical field [0001] The invention relates to the field of Internet of Vehicles, in particular to a bandwidth efficient allocation method based on a parked vehicle roadside unit (Parked Cars Roadside Unit, PCRSU). [0002] technical background [0003] With the development of edge computing and Internet of Vehicles technologies, in order to meet users' needs for time-sensitive and computing-intensive task processing such as real-time traffic conditions, surrounding environment information, and online in-vehicle entertainment, it is necessary to continuously increase the construction of RSUs. It is estimated that the installation cost of only installing RSUs at intersections in American cities is as high as 18.63 billion US dollars, and the annual maintenance cost is about 1.1 billion US dollars. High installation and maintenance costs make dense deployment of RUS difficult. [0004] The resources in the Internet of Vehicles system are limited. PCRSU needs to serve multiple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/40H04W72/04H04W72/08
CPCH04W4/40H04W72/0453H04W72/0473H04W72/54Y02D30/70
Inventor 秦鹏和昊婷武雪王淼王硕
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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