Multi-relay Routing Establishment Scheme for Low-altitude Relay System

Abstract

The invention discloses a multi-relay route establishment scheme of a low-altitude relay system, facing to emergent data communication. A receiving node configured with a gateway and a return link function module, at least two enhancement-type aerial relay platforms loaded on a low-altitude balloon, and a plurality of ground mobile terminals containing wireless interfaces are used in the multi-relay route establishment scheme. Broadcast messages are firstly sent to the relay platforms by the receiving node in a route establishing process; a communication link that the relay platforms reach the receiving node is established; route information is broadcast to other relay platforms and the ground mobile terminals by the relay platforms after random waiting time; a communication link between the relay platforms and the communication links between the ground mobile terminals and the relay platforms are established; directional antennae and a high-power wireless AP (access point) are used by each relay platform, and each relay platform has high-capacity caching, so that data storing and forwarding functions can be realized; and the lower deployment cost and the wider coverage range can be realized by adopting a multi-hop manner by the network, and the condition that high-quality communication networks can be rapidly and flexibly established in disaster areas can be realized.

Description

technical field [0001] The invention belongs to the technical field of wireless multi-hop networks, and in particular relates to a multi-relay route establishment scheme of a low-altitude relay system. Background technique [0002] The Lushan Earthquake and Wenchuan Earthquake events in Sichuan have drawn attention to emergency rescue communications after disasters. Earthquakes, tsunamis, floods in natural disasters, and terrorist attacks in man-made disasters will cause great damage to wireless communication networks. In a large-scale severe disaster scenario, the transportation and communication infrastructure in the disaster area will fail or even be completely destroyed. [0003] Communication infrastructure plays an important role during rescue operations by emergency response teams. When a large-scale disaster occurs, it takes a long time for the general wireless communication network to be restored, so most emergency rescue teams use AdHoc communication, such as wal...

AI Technical Summary

Problems solved by technology

[0006] Satellite communication can effectively transmit GPS information to any area that cannot be reached by other means of communication, but its communication cost is high and it is not suitable for large-scale application in disaster-stricken areas, which will limit the coverage of the network

[0007] For the Ad Hoc network, the connectivity of nodes is achieved by the equal cooperation of nodes, and the robustness is relatively poor

AdHoc networks are mainly used for military or other professional services and are not suitable for deployment in special cases

[0008] At the same time, no effective routing establishment method is proposed in the existing lightweight network deployment scheme

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