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Method for implementing aeronautical Ad hoc network STDMA (Self Organizing Time Division Multiple Access) protocol based on directional antenna

An aviation ad hoc network and directional antenna technology, applied in wireless communication, electrical components and other directions, can solve the problems of large propagation delay, high mobility, and various types of services, and achieve the effect of improving network throughput

Active Publication Date: 2015-12-23
CHONGQING UNIV
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Problems solved by technology

[0007] This application provides a method based on a directional antenna to realize the STDMA protocol of the aeronautical ad hoc network to solve the problems of the traditional wireless ad hoc network due to the high mobility of the nodes of the aeronautical ad hoc network, large propagation delay, and various types of services. The technical problem that MAC access technology is difficult to meet the communication requirements of aeronautical ad hoc networks

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  • Method for implementing aeronautical Ad hoc network STDMA (Self Organizing Time Division Multiple Access) protocol based on directional antenna
  • Method for implementing aeronautical Ad hoc network STDMA (Self Organizing Time Division Multiple Access) protocol based on directional antenna
  • Method for implementing aeronautical Ad hoc network STDMA (Self Organizing Time Division Multiple Access) protocol based on directional antenna

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Embodiment

[0069] A method for realizing STDMA protocol of aviation ad hoc network based on directional antenna, such as figure 1 shown, including the following stages:

[0070] Module initialization stage: activate the nodes in the aviation ad hoc network and initialize parameters;

[0071] Network initialization stage: send and receive information according to the directional antenna model, discover neighbor nodes in the network through the ADS-B system, and establish a neighbor table;

[0072] Node access and slot scheduling phase: the node is connected to the network, and the time is divided into frames, and the frames are divided into time slots, each time slot is an independent channel, and the time slot is scheduled;

[0073] Data transmission phase: The nodes that have been connected perform packet sending and receiving communication in the reserved time slot.

[0074] Each aircraft periodically broadcasts its direction, position, speed and other information through the ADS-B s...

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Abstract

The invention provides a method for implementing an aeronautical Ad hoc network STDMA (Self Organizing Time Division Multiple Access) protocol based on a directional antenna. Through adoption of a directional antenna model, node directional transmission and directional reception, the spatial reuse is enhanced. Meanwhile, a method of combining fixed time slot assignment with dynamic time slot assignment is adopted, namely, the fixed time slot assignment is realized on the basis of a polling strategy, and optimization of dynamic time slot scheduling is realized in combination with an ADS-B system. In the case of emergency demands, reservation of additional time slots is performed, so that time delay of services can be ensured at a certain degree, and an emergency data transmission demand can be met. Through adoption of the method, time slot resources are fully utilized, and the spatial reuse and network throughput are enhanced.

Description

technical field [0001] The invention relates to the technical field of wireless self-organizing networks of avionics information, in particular to a method for realizing STDMA protocol of aviation ad hoc networks based on directional antennas. Background technique [0002] In civil aviation communication, the current aviation telecommunication network can no longer meet our requirements. For example, the aircraft cannot fly freely, cannot communicate with the aircraft, cannot distribute environmental awareness information, the architecture is complex, and the network capacity and communication rate are limited. The existing aviation network has limited communication capacity and limited communication rate. Especially when flying across oceans, the cost of satellites is high and the delay is large. The bandwidth of the satellite communication channel is certain. When a large number of aircraft are connected, the channel may appear. The problem that resources cannot meet the d...

Claims

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Application Information

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IPC IPC(8): H04W72/12H04W72/04
CPCH04W72/0446H04W72/1263
Inventor 王志明曾孝平郭博文李娟刘学陈礼朱斌唐明春
Owner CHONGQING UNIV
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