A method for realizing stdma protocol of aviation ad hoc network based on directional antenna

An aeronautical ad hoc network and directional antenna technology, applied in wireless communication, electrical components, etc., can solve the problems of large propagation delay, MAC access technology is difficult to meet the communication needs of aeronautical ad hoc network, high mobility, etc., to achieve The effect of improving network throughput

Active Publication Date: 2018-10-12
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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  • A method for realizing stdma protocol of aviation ad hoc network based on directional antenna
  • A method for realizing stdma protocol of aviation ad hoc network based on directional antenna
  • A method for realizing stdma protocol of aviation ad hoc network based on directional antenna

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Embodiment

[0069] A method for realizing STDMA protocol of aeronautical 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 aeronautical ad hoc network 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 time slot scheduling stage: connect nodes to the network, divide time into frames, divide frames into time slots, each time slot is an independent channel, and schedule time slots;

[0073] Data transmission phase: The connected nodes communicate by sending and receiving packets in the reserved time slot.

[0074] Each aircraft periodically broadcasts information such as its direction, position, and speed through the ADS-B system (recording anti-collision system...

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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 ad hoc network of avionics information, in particular to a method for realizing STDMA protocol of aeronautical ad hoc network based on directional antenna. Background technique [0002] In civil aviation communications, the current aeronautical telecommunication network can no longer meet our requirements. For example, the aircraft cannot fly freely, the flight and the aircraft cannot communicate, the environment perception information cannot be distributed, the system structure is complex, and the network capacity and communication rate are limited. The communication capacity of the existing aviation network is limited, and the communication rate is limited. Especially when flying across the ocean, the cost of the satellite 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 pro...

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Application Information

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Patent Type & Authority Patents(China)
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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