Wireless ad hoc network communication method and device

Abstract

The present application 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 data sent by the node through the wireless ad hoc network; wherein, the wireless ad hoc network uses carrier sense multiple access CSMA / collision avoidance CA and time division The frame structure of the multiple-access TDMA hybrid frame, in the signal processing of the LTE transmission link, combines coding processing, diversity control and anti-interference control, and in the signal processing of the LTE receive link, the decoding processing, diversity control and anti-interference control are combined. Control the combination and increase the centerless multi-hop broadband wireless mesh network realized by the adaptive routing algorithm across the protocol layers. The wireless ad hoc network is a peer-to-peer network, in which all nodes have equal status, and nodes can join and leave the network at any time. The failure of any node will not affect the operation of the entire network, which improves the invulnerability of the network.

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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