A caching-based UAV relay-assisted vehicle networking transmission optimization method

A transmission optimization, unmanned aerial vehicle technology, applied in the field of wireless communication, to achieve the effect of optimizing the acceptable rate and

Active Publication Date: 2022-03-08
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high-speed movement of vehicles, it is very challenging to meet the V2N communication requirements only by the cooperation of roadside units

Method used

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  • A caching-based UAV relay-assisted vehicle networking transmission optimization method
  • A caching-based UAV relay-assisted vehicle networking transmission optimization method
  • A caching-based UAV relay-assisted vehicle networking transmission optimization method

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Embodiment Construction

[0048] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0049] A cache-based UAV relay-assisted vehicle networking transmission optimization method provided by the present invention specifically includes the following steps:

[0050] Step 1: Build a cache-based UAV relay-assisted vehicle networking communication system.

[0051] Such as figure 1 As shown, the communication system consists of satellites, ground vehicles, single-antenna UAVs, and base stations with multiple antennas on the roadside, which cooperate to provide ...

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Abstract

The invention discloses a cache-based UAV relay-assisted vehicle networking transmission optimization method. First, a cache-based UAV relay-assisted vehicle networking communication system is constructed to provide improved and flexible services for driving vehicles. UAVs with cache storage can pre-cache some commonly used files and request unstored data from satellites; secondly, construct an optimization function aiming at maximizing the minimum achievable velocity sum of ground vehicles: fix UAV trajectory variables and Scheduling variables, decomposing the optimization problem into two sub-problems; then, using a two-layer iterative algorithm to iterate the UAV trajectory and resource allocation strategy until the optimization problem converges to a preset accuracy. The present invention optimizes the flight trajectory of the UAV and the vehicle-UAV allocation strategy to achieve the effect of optimizing the maximum acceptable speed of ground vehicles in the entire system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a caching-based UAV relay-assisted vehicle networking transmission optimization method. Background technique [0002] With the development of information technology and the popularity of smart lifestyles, automobiles, as an important means of transportation, are endowed with more and more intelligence to alleviate traffic congestion, protect the environment, and save energy. A lot of data is generated by the vehicle's sensors, and these sensor data need to be transmitted to the cloud for analysis and processing. Therefore, how to achieve stable and high-performance Internet of Vehicles transmission is very important. In recent years, research on vehicle-to-network (V2N) has become a hot spot to realize intelligent vehicle communication. With the help of roadside units, vehicles can obtain map updates, traffic management, traffic reports and other info...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04W4/44H04L67/5681H04W24/06
CPCH04B7/18504H04W4/44H04W24/06H04L67/5681
Inventor 代海波张黎明王保云
Owner NANJING UNIV OF POSTS & TELECOMM
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