Delay-tolerant and disruption-tolerant network autonomous routing technology based on double-layer satellite network

Abstract

The invention discloses a delay-tolerant and disruption-tolerant network autonomous routing technology based on a double-layer satellite network. Three major applications of the delay-tolerant and disruption-tolerant network, namely transit return, covert communication and interrupted transmission, are taken as a research background, a double-layer network architecture combining a low-orbit satellite network and a geosynchronous orbit satellite network is adopted, and a routing solution of a delay-tolerant and disruption-tolerant network application environment is designed based on the architecture. The adopted key technology comprises space information network node encountering and link changing rules, a delay-tolerant and open-circuit routing mechanism based on social network characteristics and message transmission scheduling under the condition that network resources are limited. And key links such as time division, group division, a routing process, congestion control and an autonomous strategy are realized. According to the invention, the situation that the traditional TCP / IP protocol cannot be directly applied to the delay-tolerant and disruption-tolerant network can be handled, and a novel routing solution is provided for the delay-tolerant and disruption-tolerant network.

Description

technical field [0001] The invention belongs to the field of network technology and space satellite communication, in particular to a delay-tolerant and fault-tolerant network autonomous routing technology based on a low-orbit satellite and a geosynchronous orbit satellite double-layer satellite network. Background technique [0002] Delay-Tolerant Networks (Delay-Tolerant Networks), also known as Delay and Disruption-Tolerant Networks (DTN), is a typical coverage wireless network lacking end-to-end connections. The delay-tolerant and outage-tolerant network has high flexibility and can better adapt to the complex network environment with high transmission delay, frequent link interruption and high bit error rate. At present, DTN has been widely used in network communication fields such as space information network, satellite communication, military operations, remote mountainous areas and vehicle-mounted mobile networks. [0003] DTN is a general message-oriented overlay n...

AI Technical Summary

Problems solved by technology

[0010] Summarize the current problems to be solved from the application scenarios of DTN

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