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Resource scheduling method based on time and space correlation in vehicle communication

A spatial correlation and vehicle communication technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as resource collisions, inability to meet different needs, resource setting priorities, etc., and achieve a high degree of urgency

Inactive Publication Date: 2013-09-25
XIDIAN UNIV
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Problems solved by technology

Since this method only involves the discovery of resources, the distribution of resources is exchanged in a random manner. This method is prone to resource collisions when multiple resources compete for the channel at the same time.
At the same time, because there is no priority set for resources, it cannot meet the different needs of users for resources with different urgency.

Method used

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  • Resource scheduling method based on time and space correlation in vehicle communication
  • Resource scheduling method based on time and space correlation in vehicle communication
  • Resource scheduling method based on time and space correlation in vehicle communication

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Embodiment Construction

[0023] Attached below figure 1 The present invention is further described:

[0024] Step 1: Create a "resource attribute" data package. The location where the sending vehicle starts spawning with resources (x 0 ,y 0 ), time t 0 , category j, the user u who generates the resource creates a "resource attribute" data packet (x 0 ,y 0 , t 0 , j, u). Resources can be space-related, time-related or space-time-related, so resource attributes of different resources are also different. Time-related resources such as "stock information at a certain time" are of the form (t 0 , j, u); space-related resources such as "location information of gas stations" are in the form of (x 0 ,y 0 , j, u); resources related to time and space, such as "a traffic accident occurred at a certain time and place", its form is (x 0 ,y 0 , t 0 , j, u). There is a one-to-one correspondence between each resource and the "resource attribute" data package. The "resource attribute" data packet thus e...

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Abstract

The invention discloses a resource scheduling method based on time and space correlation in vehicle communication, which is used for mainly solving the problem of high resource collision probability caused by simultaneous channel competition of different priorities of resources in the traditional vehicle communication network during the distribution. The resource scheduling method comprises the steps of: 1, establishing a resource attribute data packet; 2, sending the resource attribute data packet; 3, checking whether the data packet exists or not; 4, judging whether resources meet the condition of received resources or not; and 5, calculating the correlation and receiving the resources. Aiming at different resource setting priorities, the invention ensures that the resources being high in urgent degree and important in vehicle users can be preferentially transmitted. In a process of receiving the resources, the defect of high resource collision rate caused by the adoption of a random switching manner is overcome according to a method for receiving correlation function values in a descending order by adopting a time and space correlation function. According to the invention, the problem of the dynamic priority change is solved in the process of propagating the resources.

Description

technical field [0001] The present invention relates to the field of communication technology, and further relates to a method for realizing resource scheduling by utilizing time and space correlation of resources in the field of vehicle wireless communication. The method realizes the sending and receiving of different priority resources in the vehicle communication network, and can be used as an important component of an intelligent traffic control system. Background technique [0002] In recent years, with the explosive growth of vehicles and the ubiquitous information demand, people's demand for communication services in the process of vehicle movement is increasing day by day. Development in the direction of intelligence and networking. [0003] Bo Xu et al. "Opportunistic Resource Exchange in Inter-vehicle Ad-hoc Networks", Proceedings of the 2004 IEEE International Conference on Mobile Data Management (MDM'04), 0-7695-2070-7 / 04 $20.00.2004IEEE, A method to query and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/00H04L12/861
Inventor 杨清海孙健高雪傅丰林王天翊
Owner XIDIAN UNIV
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