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
CN111682895BActive Publication Date: 2022-03-08NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV OF POSTS & TELECOMM
Publication Date
2022-03-08

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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.
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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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