Delay tolerant networks routing method based on optimized control information generating method

Abstract

The invention provides a delay tolerant networks routing method based on an optimized control information generating method. The method comprises the following steps: step (1), communication between nodes and a control center: the way of transmitting optimized control information to the nodes by the control center is using a satellite as a relay node for broadcasting, and the nodes transmit a message delivery condition to the control center through an opportunity link for message relay via nodes movement; and step (2), communication between the nodes: when communicating between the nodes, a multiple copies way is used for message transmission. When the message transmission is performed for the existing DTN (Delay Tolerant Networks) routing policy, the resource-constrained or resource imbalanced environment is not considered. At the same time, a global network status is not judged, so that the global network status and the routing policy are difficult to achieve the consistent goal. The invention proposes a resource-constrained DTN routing policy RC-RP based on the OCIGM (Optimized Control Information Generating Method).

Description

technical field [0001] The invention relates to a delay tolerant network (DTN) routing method, and mainly relates to a DTN routing method based on an optimized control information generation method. Background technique [0002] For traditional network architectures such as the OSI reference model, Internet architecture, and mobile ad hoc networks, it is mainly to solve the problems of small transmission delay, low error rate, and links between nodes. But in disaster scenarios, remote areas and other network environments, these traditional architectures will no longer be applicable. However, network environments such as large transmission delays, high error rates, and limited resources are becoming more and more common; the emergence of DTN has solved the above problems well. DTN is a new type of network, which is different from traditional networks in that it has the characteristics of high delay, high error rate, low transmission rate, and there may be no end-to-end conne...

AI Technical Summary

Problems solved by technology

[0006] To sum up, currently existing DTN routing strategies mainly rely on encounter information between nodes (such as encounter duration, encounter times, etc.) or certain characteristics of nodes (such as moving speed, node delivery probability, etc.) for message transmission, and Environments with constrained or unbalanced resources are not considered

However, in many application scenarios of DTN, there are often resource constraints and unbalanced resources, such as disaster scenarios, remote area networks, etc.

At the same time, the existing DTN routing strategy does not make a judgment on the global network state, making it difficult to achieve consistent goals between the global network state and the routing strategy

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