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Cognitive vehicle-mounted communication method and system with frequency spectrum allocation function

An in-vehicle communication system and spectrum allocation technology, which is used in in-vehicle communication, vehicle wireless communication services, and communication between vehicles and infrastructure. Effect

Pending Publication Date: 2018-07-06
GUILIN UNIV OF ELECTRONIC TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

The most classic of these algorithms is to use the genetic algorithm (GA) to allocate idle frequency bands, but this algorithm has a shortcoming: the search accuracy is not high, and this shortcoming will reduce the spectrum utilization

Method used

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  • Cognitive vehicle-mounted communication method and system with frequency spectrum allocation function
  • Cognitive vehicle-mounted communication method and system with frequency spectrum allocation function
  • Cognitive vehicle-mounted communication method and system with frequency spectrum allocation function

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Embodiment Construction

[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific examples and with reference to the accompanying drawings.

[0026] see figure 1 , a cognitive vehicular communication method with spectrum allocation function, the method is based on such as figure 2 The specific implementation steps of the cognitive in-vehicle network model shown are as follows:

[0027] Step 1. The on-vehicle cognitive user who will initiate communication sends a communication request to the roadside unit;

[0028] Step 2, the roadside unit judges the use of the DSRC (dedicated short-range communication) frequency band: if it is judged that there is an idle frequency band in the DSRC, the vehicle to be communicated is notified of the result, and the vehicle to be communicated directly uses the DSRC frequency band to initiate communication; if the DSRC frequency b...

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Abstract

The invention discloses a cognitive vehicle-mounted communication method and system with frequency spectrum allocation function; the system comprises a vehicle-mounted cognitive user provided on a vehicle and a roadside unit disposed on the roadside, wherein the roadside unit comprises a frequency spectrum allocation module; each vehicle-mounted cognitive user comprises a cognitive center processor, a cognitive communicator, a base station communicator, a base station center processor, a control center, a radio frequency front end, a base band processing module and a vehicle-mounted unit. According to the method and the system, available frequency bands are allocated by utilizing a cuckoo search algorithm based on hybrid simulated annealing, so that not only can the problem that local optimum is prone to being caught in the searching process of the cuckoo algorithm be effectively solved, but also compared with frequency spectrum allocation based on the GA algorithm, the method can effectively improve the network throughput so as to achieve a good effect.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a cognitive vehicle communication method and system with spectrum allocation function. Background technique [0002] At present, with the increasing number of vehicles, the contradiction between the supply and demand of spectrum resources for communication between vehicles has become increasingly prominent. Therefore, the combination of cognitive radio and vehicle communication has very important research value. Cognitive users can utilize licensed but unused frequency bands, thereby alleviating the problem of insufficient spectrum resources in vehicular networks. Spectrum allocation, one of the core technologies of vehicular cognitive radio, is to rationally and effectively allocate the underutilized licensed frequency bands for the use of cognitive users under specific allocation rules. [0003] The spectrum allocation model is based on the corresponding interf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W72/08H04B17/382H04W4/44H04W4/48H04W72/54
CPCH04B17/382H04W72/0453H04W72/21H04W72/541H04W72/542H04W72/23
Inventor 肖海林张玉冰邱斌蒋为马得森金晓晴
Owner GUILIN UNIV OF ELECTRONIC TECH
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