Wireless ad hoc network communication method and device

Abstract

The invention relates to a wireless ad hoc network communication method and device. The method sends data to a node through a wireless ad hoc network and receives the data sent by the node through thewireless ad hoc network. Wherein the wireless ad hoc network is a frame structure of a mixed frame of a CSMA / collision avoidance CA and a time division multiple access TDMA through a carrier sense multiple access, In signal processing of LTE transmission link, encoding, diversity control and anti-jamming control are combined. In signal processing of LTE reception link, decoding, diversity controland anti-jamming control are combined, andAdaptive routing algorithm across protocol layer is added to realize centerless multi-hop wideband wireless mesh network. The wireless ad hoc network is a peer-to-peer network, all nodes in the network are equal in status, nodes can join and leave the network at any time, the failure of any node will not affect the operation of the whole network, and theinvulnerability of the network is improved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a wireless ad hoc network communication method and device. Background technique [0002] Wireless communication is a technology that modulates useful information on electromagnetic waves and propagates in the atmospheric medium, which is greatly affected by the channel environment in which electromagnetic waves propagate, including multipath or shadow fading caused by factors such as terrain unevenness and occlusion, high-speed Doppler effects caused by movement, electromagnetic interference or time-varying noise in the same frequency band, etc., these factors will cause a significant decline in communication performance and even communication interruption, whether in enterprise parks, ports, fire protection, anti-terrorism, military exercises, etc. In emergency communication scenarios, as well as in intelligent robot communication scenarios such as drones...

AI Technical Summary

Problems solved by technology

Unmanned ship / boat communication is often implemented by various technical means including narrowband data transmission, broadband digital image transmission, broadband public network transmission, broadband LTE private network transmission, and satellite communication transmission. However, due to the limitations of narrowband data transmission and digital bridge transmission The transmission distance, transmission bandwidth and anti-multipath ability are limited, public network transmission is limited by coverage and transmission stability, and satellite communication transmission costs are relatively high, so the usual means of unmanned ship / boat communication is LTE private network transmission. It is a typical shore-based erection of an LTE base station, and an LTE terminal is deployed on an unmanned ship / boat to form a shore-to-ship point-to-multipoint communication method.

[0003] However, LTE adopts a point-to-multipoint networking method. During the communication process, there is a master station that aggregates all data streams. Once an abnormality occurs at the shore-based base station site, the entire network within the coverage area will be paralyzed, and it is not invulnerable. sex

At the same time, in complex application scenarios where multiple unmanned ships / boats need to perform cluster operations in various topologies, and even unmanned ships / boats and other drones, shore-based command centers and other nodes conduct cross-land, sea and air networking, LTE This kind of point-to-multipoint networking and deployment method has great limitations, which is not conducive to the rapid deployment and implementation of the network and the effective transmission of communication information between deployment nodes.

In addition, LTE has a limited ability to deal with in-band interference, and cannot adapt to unmanned ships / boats that may work in complex electromagnetic environments such as waterways and ports. In practical applications, they will face uncontrollable reliability problems in communication links.

These problems will have a significant impact on the practical application of unmanned systems

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