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Communication method for connection-oriented satellite route switching system

A switching system, connection-oriented technology, applied in the field of routing switching communication, can solve the problems of high complexity in system design and implementation, lack of QoS guarantee capability, insufficient QoS requirement capability, etc., to improve flexibility and scalability, improve QoS Guarantee Capability, Design and Implementation Simplification

Inactive Publication Date: 2009-07-29
BEIHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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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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  • Communication method for connection-oriented satellite route switching system
  • Communication method for connection-oriented satellite route switching system
  • Communication method for connection-oriented satellite route switching system

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Embodiment Construction

[0038] The onboard routing switching system adopted in the method of the present invention mainly completes the functions corresponding to the data link layer and the network layer of the satellite node of the space-based mobile system, and completes the corresponding functions such as registration, service establishment and service transmission processing. figure 1 As shown, the user link interface unit completes user access control and user information processing, the feeder link interface unit completes the point-to-point communication of the satellite-ground feeder link, the inter-satellite link interface unit completes the point-to-point communication of the inter-satellite feeder link, and the main Control the routing switching unit to complete the routing switching function.

[0039] like figure 2 As shown, the onboard routing switching system adopted by the method of the present invention specifically implements the connection-oriented wireless access technology and t...

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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 to the field of aerospace information, in particular to a connection-oriented IP / MPLS-based onboard routing switching system communication method applied to broadband communication satellites. Background technique [0002] The space-based information network is a kind of satellite network (space-based) based, which integrates air-ground information, and consists of various types of satellite systems in different orbits. 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 space-based information systems to realize multiple and three-dimensional sharing of information, becoming the next generation of mobile communication ( 4G) and an important part of the national information superhighway. [0003] The spaceborne routing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/185H04L12/56H04L29/06H04L29/08H04L12/70
Inventor 张军张涛康政
Owner BEIHANG UNIV
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