Relay emergency wireless data communication frame of low-altitude balloon load

Abstract

The invention provides a relay emergency wireless data communication frame. A relay net is formed by a single low-altitude relay platform; the relay platform is hung below a balloon tied on a rope fixed on a trolley; and an application scene is a land cellular network with one part of damaged base stations and fewer base stations (reserved base stations) which can realize physical connection. A low-altitude relay physical layer can utilize a cognitive radio technology to detect signal frequency spectrums of the reserved base stations so as to carry out radio resource management of emergency data communication; the relay platform can realize following functions: 1) connection close to line-of-sight propagation is provided for a land user; 2) the position of the relay platform is adjusted to guarantee that links among the relay platform and a plurality of land base stations have better channel quality; 3) a certain cognitive radio function is realized; 4) communication with an external network is realized by a gateway which is used as the reserved base station.

Description

technical field [0001] The invention relates to the field of wireless emergency communication, in particular to a low-altitude relay emergency wireless data communication method. Background technique [0002] The existing terrestrial cellular communication system is prone to be paralyzed after a large-scale geological disaster, and then the communication service function will be lost. At present, the relay emergency communication researched at home and abroad includes low-altitude relay platform and high-altitude relay platform. The low-altitude relay platform is relatively flexible, and the overhead and delay are smaller than the high-altitude platform, but the disadvantage is that the coverage is small, and it is easily affected by low air flow disturbance; the high-altitude relay platform has a large coverage, and the delay and overhead are smaller than satellite communications. Obviously larger than the low-altitude relay platform, the economic cost is usually relativel...

AI Technical Summary

Problems solved by technology

However, the existing technology, whether it is a low-altitude relay platform or a high-altitude relay platform, does not have a high spectrum utilization rate, which may cause many communication failures and have a great impact on disaster relief work.

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