Research On Routing Algorithm In Transoceanic Civilaeronautical Ad Hoc Networks

As an important part of the future air base network and a supplement of thetransoceanic aeronautical mobile communication, the aeronautical ad hoc network hasbecome a hot topic in the space network research recent years. For providing data withtransmission path and path selection, it could affect the performance of the wholenetwork directly. Since aeronautical ad hoc network has special features, such as highdynamic, large-scale, limited bandwidth, regularity of the node’s movement. Thetraditional mobile ad hoc network routing technology is no longer applicable to it. Thusit is always a hot and difficult research issues for aeronautical ad hoc network to providean efficient and reliable routing algorithm.According to the needs and characteristics of transoceanic civil aviationcommunication, a multipath routing protocol based on path stability (MRPPS) is putforward in this paper. It could offer reliable and efficient transmission path foraeronautical ad hoc network. The main research works are as follows:①Setting up selection mechanism based on link duration and hop-count. In viewof the problem that the high speed of the aircrafts in the aeronautical ad hoc networkseasily leads to link disconnection and topology changes, the protocol uses link durationand hop–count as routing metric. Thus it could establish stable communication path, andreduce the number of handoffs.②Proposed strategy of base station initiating routing. Due to the purpose of theaircrafts is to access ground stations, the protocol uses the strategy that ground stationsends the route maintenance packet in order to set up routing. For nodes only setting uprouting to ground station and some other nodes, it could reduce routing overheadeffectively. Meanwhile, as a proactive routing protocol, it could reduce the end-to-enddelay by maintaining routing periodically.③Using multipath routing. In order to guarantee the reliability of data transmission,and prevent link disconnection caused by interruption, the protocol establishes twopaths which could prevent the degradation of the performance due to the primary path isdisconnected or congestion.④Designing and programming. It designs the protocol from five aspects: packetformat, table structure, neighbor detection, routing discovery and routing maintenance.The protocol is programmed in NS2for simulating. Through the simulation analysis, this protocol could provide higher packet deliveryratio, reduce routing overhead, and decrease the end-to-end delay. In conclusion,MRPPS could improve routing stability and ensure reliable, efficient data transmission.Related works of the paper could provide reference for research of aeronautical ad hocnetworks theory and engineering.