Relay-based self-adaptive beam forming vehicle-vehicle communication method
A technology of adaptive beam and communication method, applied in the field of communication, can solve problems such as poor communication quality and low reliability of vehicle-to-vehicle communication, and achieve the effect of improving transmission reliability
Active Publication Date: 2019-08-13
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
The Doppler effect formed by too fast speed will cause the reliability of vehicle-to-vehicle communication to be low and the communication quality to be poor
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[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0028] At present, in the case of high-speed driving, such as high-speed rail, high-speed rail and other scenarios, the reliability of communication between vehicles will be low due to the Doppler effect.
[0029] Regarding the issue above, figure 1 It is a schematic flowchart of a relay-based adaptive beamforming vehicle-to-vehicle communication method provided by an ...
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The embodiment of the invention provides a relay-based self-adaptive beam forming vehicle-vehicle communication method, which comprises the following steps that: a target vehicle receives first information sent by a source vehicle in a first time slot, and the first information is original information sent by the source vehicle in a first precoding form; the destination vehicle receives decoding information corresponding to the first information sent by the relay base station in a DF forwarding mode and second information sent by the source vehicle at the same time in a second time slot, the second information is original information sent in a second precoding mode, and the decoding information is subjected to third precoding; and based on two-time-slot joint virtual beam forming formed bythe first precoding, the second precoding and the third precoding, self-adapting to the current channel environment is achieved, and the communication process is finished. According to the method provided by the embodiment of the invention, the communication process can be adaptive to channel environments in different moving states, Doppler influence caused by high-speed movement of the vehicle is resisted, and the transmission rate and reliability from the source vehicle to the target vehicle are improved.
Description
technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular to a relay-based adaptive beamforming vehicle-vehicle communication method. Background technique [0002] With the rapid development and application of wireless communication technology and mobile autonomous network, the information communication system with vehicles as nodes has become a new direction for the development of intelligent transportation. [0003] In the current vehicle-to-vehicle communication process, the relative speed of the vehicles is often too fast, for example, two bullet trains traveling in different directions, their relative speeds are relatively high. The Doppler effect formed by too fast speed will cause the reliability of vehicle-to-vehicle communication to be low and the communication quality to be poor. [0004] Therefore, there is an urgent need for a relay-based adaptive beamforming vehicle-vehicle communication met...
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Login to View More IPC IPC(8): H04W4/46H04B7/06H04B7/0456
CPCH04B7/0456H04B7/0617H04W4/46
Inventor 滕颖蕾曹源张勇潘长清安宁刘梦婷魏翼飞郭达贾力郑凯航曹圆圆
Owner BEIJING UNIV OF POSTS & TELECOMM