Mobile communication node networking control method based on directional antenna

A mobile node and directional antenna technology, applied in wireless communication, network topology, electrical components, etc., can solve the problems of not knowing, not being able to receive signals, and directional antenna aiming at the other party, so as to achieve improved utilization, quality and Communication speed, effect of extended distance

CN101848534AInactive Publication Date: 2010-09-29BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-09-29
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a mobile communication node networking control method based on a directional antenna. In the invention, a communication connection is established between the mobile nodes by using a bi-directional neighbor discovery method, and then the synchronous communication time is distributed to the mobile node and the neighbor node by using the TRC method, so as to maintain the communication connection between the mobile nodes; subsequently, during a period T2, the synchronous communication between the nodes is controlled by using a synchronous time control method so as to keep the communication connection between the nodes, and then the communication time is distributed to the mobile nodes by using the DTRC method; and finally, in a period T3, the communication between the nodes is controlled by using the bi-directional communication control method, and data exchange between the nodes is realized by using a data transmission control method, so as to realize communication between the nodes. The invention adopts a directional antenna to receive and send communication, and therefore, the communication distance between two parties is increased, the communication efficiency is improved, the conflict probability of the channels during the communication between the nodes is reduced, and the channel utilization rate and the communication efficiency are improved.
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Description

technical field

[0001] The present invention relates to a network control method suitable for mobile Ad Hoc networks, more particularly, a method for network control of mobile nodes (vehicle nodes) based on directional antennas. Background technique

[0002] The Ad Hoc network is a wireless network composed of mobile nodes capable of communicating with each other. This network is often used in disaster recovery, survivor search and rescue, and other environments where wired networks are not available or difficult to function.

[0003] There are two types of antennas used by nodes in the Ad Hoc network: omnidirectional antennas and directional antennas.

[0004] The omnidirectional antenna has a 360° radio frequency range, so there is no need to point the antenna to the opposite end during communication. An omnidirectional antenna sends signals of the same strength in all directions, so its signal coverage area is approximately a circle, but since the receiver only exists i...

Examples

Embodiment Construction

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0018] In the present invention, all mobile nodes are vehicle-mounted nodes, use directional antennas as communication media, and are equipped with GPS receiving terminals. Therefore, each mobile node can obtain its own current geographic location information A(x, y), and the geographic location information A(x, y) includes the longitude x and latitude y where the node is located.

[0019] In the present invention, one working cycle of the mobile node is denoted as T α , during the duty cycle T α There are three subperiods in , the neighbor discovery period T 1 , synchronization period T 2 and node communication cycle T 3 , and satisfy T α =T 1 +T 2 +T 3 .

[0020] A directional antenna-based mobile communication node networking control method of the present invention, the method is in the neighbor discovery period T 1 In this method, the dual-directional n...