A collaborative caching method based on traffic infrastructure in the Internet of Vehicles environment

An infrastructure and collaborative caching technology, applied in the field of Internet of Vehicles communication, can solve problems such as inability to meet the data transmission requirements of vehicle communication, and achieve the effects of alleviating data transmission pressure, increasing data size, and efficient data shunting

Active Publication Date: 2019-07-09
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the C / S (client / server) architecture adopted by the traditional Internet of Vehicles to provide services to users has been unable to meet the data transmission requirements of in-vehicle communication.

Method used

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  • A collaborative caching method based on traffic infrastructure in the Internet of Vehicles environment
  • A collaborative caching method based on traffic infrastructure in the Internet of Vehicles environment
  • A collaborative caching method based on traffic infrastructure in the Internet of Vehicles environment

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Embodiment Construction

[0019] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0020] The present invention is a collaborative caching method based on traffic infrastructure under the Internet of Vehicles environment, and its flow chart is as follows figure 1 As shown, the example scenario is as follows figure 2 shown, including the following steps:

[0021] Step 1: In the network controlled by a macro base station (Macro-Base Station), there are known C cars, set C={c 1 ,c 2 ,...,c C}, where car c is represented by c c Indicates that the on-board terminal capacity of each car is H 1 , the communication distance is r 1 , there are M small base stations (Small-Base Station), use set M={m 1 ,m 2 ,...,m M}, where the small base station m is represented by m m Indicates that the capacity of each small base station is H 2 , the communication distance is r 2 , the collection of infrastructure (traffic lights, broadcasting...

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Abstract

The invention discloses a cooperative caching method based on a transportation infrastructure under a car networking environment. The method comprises the following steps of step 1.obtaining cooperative cache configuration optimization models of a vehicle, a roadside infrastructure and a small base station; step 2.obtaining a cache updating optimization model based on path prediction; step 3.obtainig algorithms of cache configuration and cache updating; and step 4.carrying out data transmission to obtain system throughput. Under the car networking environment, the cooperative cache data of the roadside infrastructure, the small base station and the vehicle is utilized and the cooperative updating of the cache data is carried out based on a predicted vehicle driving path, so that the pressure of the vehicle-mounted communication data is relieved, and the data transmission efficiency is effectively improved.

Description

technical field [0001] The invention relates to a collaborative caching method that comprehensively considers vehicles, roadside traffic infrastructure and small base stations under the environment of the Internet of Vehicles, and belongs to the technical field of Internet of Vehicles communication. Background technique [0002] The concept of the Internet of Vehicles (Internet of Vehicles) is derived from the Internet of Things (Internet of Things), which is a huge interactive network composed of information such as vehicle location, speed and route. [0003] According to the definition of the Internet of Vehicles Industrial Technology Innovation Strategic Alliance, the Internet of Vehicles is based on the intranet, the Internet of Vehicles and the mobile Internet in vehicles. Pedestrians and the Internet, etc.), a large system network for wireless communication and information exchange, is an integrated network that can realize intelligent traffic management, intelligent d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W28/14H04L29/08
CPCH04L67/12H04W24/02H04W28/14
Inventor 王钢董鑫
Owner BEIHANG UNIV
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