This paper addresses scheduling algorithms in message transmissions using UAV as communication relay to cover the war zone.

研究了将无人机作为通信中继平台对战区实施无线通信覆盖时的信息传输调度算法。

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In vehicular AD hoc networks, stable clustering methods could reduce the networks of communication relay and provide for a more efficient hierarchical network topology.

车用自组网中，有效的分层协议可以增强网络逻辑拓扑结构的稳定性，减小通信中继花费。

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Each mission had a satellite designed to photograph the surface of Mars from orbit, and to act as a communication relay for the Viking lander that each mission carried.

每次任务都发射一枚具备从火星轨道拍摄火星表面能力的人造卫星，同时充当与海盗登陆者进行联络的中间站。

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The Russians said a number of rebel vehicles, anti-aircraft installations and communication facilities and a relay transmitter were destroyed.

BBC: Row over Chechnya 'atrocities'

Such machines could be used for scientific research or surveillance, or as relay stations to transmit communication signals across long distances.

CNN: Funny-looking plane designed to make history