A Schedule-Based DTN Opportunity Predictive Routing Method

Abstract

The invention discloses an opportunity prediction routing method for a delay-tolerant and fault-tolerant network (DTN) based on a schedule. On the basis of researching the existing routing mechanism of a delay-tolerant and fault-tolerant network, an assembly is designed for the special environment of the battlefield and the characteristics of the mobile fleet. ‑Expand mobility model and timetable-based opportunity prediction DTN routing algorithm and cache management strategy, can predict the physical location of nodes and the probability of encounters between nodes according to the mobile node activity schedule, and then make optimized information forwarding decisions, so that in Under conditions of high latency and frequent link interruptions in the battlefield environment, network communication can be kept smooth, the reliability of information transmission, data throughput and delivery delay can be reduced, thereby enhancing the survivability of the DTN communication network in the battlefield environment.

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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