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RSU switching method for Internet of Vehicles based on throughput comparison

A throughput and vehicle networking technology, applied in the field of vehicle network communication, which can solve the problems of small base station coverage and the inability to guarantee the real-time and reliability of message transmission.

Active Publication Date: 2021-09-28
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current popular 4G network (such as LTE) has a wide transmission range, but its base station coverage is small, which cannot guarantee the real-time and reliability of message transmission.

Method used

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  • RSU switching method for Internet of Vehicles based on throughput comparison
  • RSU switching method for Internet of Vehicles based on throughput comparison
  • RSU switching method for Internet of Vehicles based on throughput comparison

Examples

Experimental program
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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0044] figure 1 It is a flow chart of switching between edge area RSUs in the dynamic link of the present invention; figure 1 show:

[0045] (1) First implement random linear network coding on the transmitted data;

[0046] (2) When the vehicle is within the coverage of the current RSU, calculate the probability that the received data packet is an innovative type according to the finite field of the random linear network coding system, and obtain the bit error rate at this time according to the wireless channel modulation method;

[0047] Specifically include:

[0048] S21: Calculate the number k of vehicles within the coverage of the current RSU;

[0049] The RSU is at a meter vertically a...

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Abstract

The invention discloses a method for switching RSUs in the Internet of Vehicles based on throughput comparison, which includes first implementing random linear network coding on the transmitted data; The probability that the data packet is innovative and the bit error rate at this time is obtained according to the wireless channel modulation method; the current system throughput of the RSU is calculated according to the probability that the obtained data packet is innovative and the bit error rate; when the vehicle moves to the next When the coverage of one RSU is covered, the system throughput of the next RSU is calculated; when the system throughput of the next RSU is greater than the system throughput of the current RSU, RSU switching is performed. The present invention is based on the throughput comparison RSU switching method of the Internet of Vehicles. The method considers the fading characteristics of the wireless channel link, calculates the system throughput of the RSU during the broadcasting process, and completes the RSU switching between the RSUs by comparing the throughput of the border area. switch.

Description

technical field [0001] The invention relates to a method for switching RSUs in the Internet of Vehicles, in particular to a method for switching RSUs in the Internet of Vehicles based on throughput comparison, and belongs to the technical field of vehicle network communications. Background technique [0002] Vehicular Ad Hoc Networks (VENETs) is an emerging technology of Intelligent Transportation System (ITS). Vehicular Ad Hoc Networks is a dynamic Ad hoc network that provides safety, traffic efficiency, comfortable driving and entertainment functions. Traffic information is very useful to a driver, such as accident warning and road congestion warning, which can effectively prevent road congestion and improve vehicle driving efficiency. However, due to the mobility and short communication range of the vehicle, the connection time in the V2V (vehicle-to-vehicle, vehicle-to-vehicle,) stage is very short, but the RSU (Road Side Unit, roadside unit) and roadside equipment Comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/44H04W36/00H04W36/30
CPCH04W36/0083H04W36/30H04W4/44
Inventor 梅中辉章阳阳
Owner NANJING UNIV OF POSTS & TELECOMM