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Vehicular communication method and system with cognitive function

A technology of cognitive function and in-vehicle communication, applied in transmission systems, wireless communication, wireless communication services, etc., can solve the problem that the vehicle frequency band cannot meet the needs of in-vehicle communication.

Active Publication Date: 2016-11-23
GUILIN UNIV OF ELECTRONIC TECH
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing vehicle-mounted frequency band cannot meet the needs of vehicle-mounted communication, and a vehicle-mounted communication method and system with cognitive function is provided, which can adaptively judge whether to start the cognitive function, and determine whether the DVB -T frequency band for accurate detection and allocation

Method used

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  • Vehicular communication method and system with cognitive function
  • Vehicular communication method and system with cognitive function
  • Vehicular communication method and system with cognitive function

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Embodiment Construction

[0044] A method of in-vehicle communication with cognitive functions such as figure 1 shown, including the following steps:

[0045] (1) The cognitive central processor of the cognitive user to be communicated sends a communication request to the base station communicator through the cognitive communicator, and the base station central processor transmits the information to the control center. After the control center receives the information to be communicated, it exchanges information with the roadside unit (RSU) at its location.

[0046] (2) The roadside unit reports the perceived spectrum usage of the short-range communication (DSRC) frequency band to the control center. If there is an idle frequency band, it will directly use the short-distance communication frequency band for communication; if there is no idle frequency band, the roadside unit will broadcast the information to the cognitive users in the nearby queue, and the cognitive users in the queue will turn on the...

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Abstract

The invention discloses a vehicular communication method and system with a cognitive function. The system comprises more than two cognitive users and a roadside unit. Each cognitive user comprises a cognitive center processor, a cognitive communication device, a base station communication device, a base station center processor, a control center, a radio frequency front end, a baseband processing module and a vehicular unit. According to the method and the system, DSRC (Dedicated Short Range Communication) and cognitive radio are combined and are applied to vehicular communication; a licensed band can be employed when the DSRC licensed band is idle, and the cognitive function can be started when the licensed band is busy; the employing condition of a band of a residential area DVB-T can be detected and utilized, and the spectrum efficiency is effectively improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a vehicle communication method and system with a cognitive function. Background technique [0002] Currently, the frequency band used for vehicle communication is: 5855MHz-5925MHz. However, with the substantial increase in the number of vehicle users and communication requirements, only 70MHz cannot meet the needs of vehicle communication. Experiments have shown that there are a large number of "spectrum holes" in other licensed frequency bands. These "spectrum holes" are not used by licensed users most of the time. Therefore, how to use these "spectrum holes" in vehicle communication has become a research hotspot. . [0003] For this reason, the vehicular communication technology with cognitive function based on short-distance communication came into being. This technology allows unlicensed cognitive users to use the licensed user's frequency band to communicate when t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/00H04W72/08H04B17/382H04W72/54
CPCH04B17/382H04W72/542
Inventor 肖海林张玉冰黄国庆莫秋椿沈正源陈孝敬马得森金晓晴
Owner GUILIN UNIV OF ELECTRONIC TECH
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