DTN opportunity prediction routing method based on timetable

Abstract

The invention discloses a delay tolerant and disruption tolerant network (DTN) opportunity prediction routing method based on a timetable. On the base of the research on the routing mechanism of the existing delay tolerant and disruption tolerant network, an aggregated-unfolded mobile terminal, an opportunity prediction DTN routing algorithm based on a timetable and a cache management strategy are designed in view of the characteristics of special battlefield environments and mobile motorcades, physical positions of nodes and a meeting probability of the nodes can be predicted according to the moving timetables of the mobile nodes, then an optimized information forwarding decision is made, so that smooth network communication can be kept on the condition of high delay and frequent link interruption in the battlefield environments, the information transmission reliability and the data throughput are improved, and the delivery delay is shortened, therefore the survivability of a DTN communication network in the battlefield environments is enhanced.

Description

technical field [0001] The present invention relates to a timetable-based DTN opportunity prediction routing method, and an efficient DTN routing algorithm is designed for complex and changeable battlefields or emergency communication environments to improve data forwarding efficiency and reliability. The present invention relates to DTN network technology, DTN node mobility Model and Opportunity Predictive Routing. Background technique [0002] Delay Tolerant Network (DTN), also known as Delay Tolerant Network or Delay Tolerant Network, is a new type of network system that can tolerate network interruptions and large transmission delays. Delay Tolerant Network (DTN), as a new store-and-forward network system, can provide basic communication services in complex and harsh network environments, and has received extensive attention and research in recent years. The information transmission of DTN depends on the contact opportunity between nodes, and the data is sent to the des...

AI Technical Summary

Problems solved by technology

[0005] Although a variety of routing algorithms have been proposed recently for the routing problem of DTN networks, due to the dynamic characteristics of DTN network topology changes, the randomness of link interruptions, and the large delays and long interruptions in the network, algorithm design still exists. There are many problems and challenges, such as large differences in algorithm application scenarios, low data forwarding efficiency of existing routing algorithms, nodes cannot forward data well in combination with their own characteristics and network status, flood forwarding will cause waste of resources, fixed The forwarding may cause the failure of forwarding, the reliability and effectiveness of the algorithm must be considered

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