Fast routing convergence optimization method for LEO/MEO (Low Earth Orbit/Medium Earth Orbit) satellite network

A satellite network and fast convergence technology, which is applied in the direction of data exchange network, radio transmission system, digital transmission system, etc., can solve problems that affect the convergence of network roads, increase routing overhead, and high fault misjudgment rate
CN106100720AActive Publication Date: 2016-11-09DALIAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN UNIVERSITY
Publication Date
2016-11-09

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Abstract

The invention discloses a fast routing convergence optimization method for an LEO / MEO (Low Earth Orbit / Medium Earth Orbit) satellite network. The method comprises a step of carrying out dynamic bidirectional forwarding detection; a step of carrying out coverage clustering on the LEO / MEO satellite network; and a step of judging a fault type of the satellite network. During a fault detection stage, the fault detection speed is increased through the dynamic bidirectional forwarding detection; during an LSA (Link State Advertisement) diffusion stage, the routing overhead and the queuing delay are reduced through a coverage network clustering algorithm; and during a routing table updating stage, the updating delay of a routing table is reduced through an SFTJM (Satellite Network Fault Type Judging Method) algorithm, and the fast convergence of the whole network is finally realized.
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Description

technical field

[0001] The invention belongs to the field of satellite network dynamic routing protocol, in particular to a fast convergence optimization method for LEO / MEO satellite network routing. Background technique

[0002] With the development of network communication, satellite network, as the extension of ground network, has attracted more and more attention of scholars. Due to the characteristics of large delay and high dynamics of the satellite network, the original routing protocol on the ground cannot adapt to the satellite network. At present, scientists at home and abroad propose to combine the virtual topology routing algorithm with the OSPF protocol and the dynamic routing protocol to improve the routing convergence speed of the satellite network. . The RLSR protocol is a representative of this type of protocol, but the protocol still has the following deficiencies:

[0003] First, in the fault detection phase of the RLSR protocol, in order to achieve fast...

Claims

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