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A method and device for controlling wireless transmission power

A control method and wireless transmission technology, applied in transmission monitoring, power management, transmission system and other directions, can solve the problems of inapplicability of wireless resources, inability to realize wireless power control in real time, and low reliability of data transmission between OBU nodes, etc. Real-time control, ensuring reliability, and reducing the effect of communication conflicts

Active Publication Date: 2019-01-04
CHINA MOBILE COMM GRP CO LTD
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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a control method and control device for wireless transmission power to solve the problem that the existing wireless transmission power cannot make full use of wireless resources and the existing method for adjusting wireless transmission power is not suitable for rapid topology changes The vehicle ad hoc network cannot realize wireless power control in real time, resulting in the problem of low reliability of data transmission between OBU nodes

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  • A method and device for controlling wireless transmission power
  • A method and device for controlling wireless transmission power
  • A method and device for controlling wireless transmission power

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Embodiment Construction

[0050] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] The present invention aims at the fact that the existing wireless transmission power cannot make full use of wireless resources and the existing method for adjusting wireless transmission power is not applicable to the vehicle ad hoc network with rapidly changing topology, and cannot realize wireless power control in real time, resulting in data transmission between OBU nodes To solve the problem of low reliability, a method and a control device for controlling wireless transmission power are provided.

[0052] An embodiment of the present invention provides a method for controlling wireless transmission power, which is applied to a vehicle ad hoc network system including multiple OBU nodes, wherein each OBU node has the same minimum receiving p...

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Abstract

The invention provides a wireless transmission power control method and a control device. The wireless transmission power control method is applied to a vehicle ad-hoc network system comprising a plurality of OBU nodes. Each OBU node possesses same minimal receiving power and a receiving antenna gain. The control method comprises the following steps of acquiring a running speed of a current OBU node; according to the running speed, acquiring an effective communication distance; according to an emission antenna gain, the receiving antenna gain and the minimal receiving power of the current OBU node and the effective communication distance, determining expected emission power of the current OBU node; adjusting current emission power of the current OBU node so that the current emission power approaches the expected emission power. In the above scheme, through using a moving speed of the OBU node, emission power of a wireless signal of the OBU node is adjusted; a communication conflict among the OBU nodes are reduced and reliability of data transmission among the OBU nodes is guaranteed.

Description

technical field [0001] The invention relates to the technical field of wireless transmission of vehicle ad hoc network, in particular to a control method and a control device of wireless transmission power. Background technique [0002] Vehicle Ad Hoc Network (VANET, Vehiclar Ad Hoc Network) is a mobile ad hoc network (MANET, Mobile Ad Hoc Network) that combines sensor technology, short-distance mobile communication and information processing technology. Composition, to achieve the goal of safe driving of the vehicle. It has various characteristics of ad hoc networks, and also has some inherent characteristics, such as vehicle nodes have communication, storage, and computing functions, and node energy is not limited. The VANET communication mechanism is divided into two types: vehicle-to-vehicle communication (V2V, Vehicle to Vehicle) and vehicle-to-road test unit communication (V2R, Vehicle to RUS). [0003] OBU (On Board Unit) is the on-board unit of VANET. In VANET, mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/04H04W52/18H04B17/00H04L29/08
Inventor 丁郁彭巍赵军辉万鸿俊马少飞
Owner CHINA MOBILE COMM GRP CO LTD
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