Communication method for connection-oriented satellite route switching system

Abstract

An onboard routing and switching system communication method facing to connection includes: (1) MAC frames entering the onboard routing and switching system, firstly according to connection identifier (CID), are judged to be initial access frames, supervisory frames or service frames; for the initial access frames, the onboard routing and switching system distributes the supervisory CID to the user and generates the replay message; after receiving the message, the user uses the supervisory CID to intercommunicate information with the satellite; for the supervisory frames, such operations are performed that the detailed information of the MAC frames is judged, and the requests of capability negotiation, network access, service connection and service switching are processed respectively; for the service frames, the service CID is further determined to be intra-domain communication or inter-domain communication, and then corresponding service processes are performed respectively; (2) when the interface unit end receives data packets transferred from the network layer, such processes are performed that MPLS labels or objective IP addresses are picked up, and so on. By connecting services differently marked to construct different logical channels, the invention realizes to ensure QoS access processes thereof according to the different logical channels, effectively ensures QoS of different services, improves the flexibility and extensibility of the system, and reduces the complexity.

Description

technical field [0001] The invention relates to a routing switching communication method applied in the field of aerospace information, in particular to a connection-oriented IP / MPLS-based satellite routing switching system communication method applied to broadband communication satellites. Background technique [0002] The space-based information network is a satellite network (space-based), which integrates space-ground information, consists of various types of satellite systems in different orbits, and is interconnected and organically constituted in accordance with the principle of maximum and effective comprehensive utilization of space information resources. system. The network integrates a variety of aerospace information systems, has independent information acquisition, storage, processing and distribution capabilities, and can be interconnected with land, sea, and air-based information systems to realize multiple and three-dimensional sharing of information and beco...

AI Technical Summary

Problems solved by technology

[0009] At present, the typical terrestrial wireless interface standards mainly include the following types: (1) Land-based mobile communication, that is, 2G / 3G standard, uses complex logical channels to solve multi-user access problems, and the system design and implementation are highly complex and flexible. , and insufficient ability to guarantee different QoS requirements of services

(2) Wireless Local Area Network (WLAN), that is, the 802.11 series of standards, mainly for wireless access to LANs, with a small coverage area, a small number of simultaneous access users, and no QoS guarantee capability

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