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Label inspection method in satellite MPLS network

A satellite network and label technology, applied in the field of label inspection in satellite MPLS networks, can solve the problems of reduced LSP service carrying capacity, loss of IP data packets, and "mis-insertion of packets", achieving good results, reducing occurrence frequency, reducing effect of loss

Inactive Publication Date: 2009-10-07
TSINGHUA UNIV
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Problems solved by technology

[0023] The object of the present invention is to provide a label checking method in a satellite MPLS network, which can solve label errors and packet "errors" caused by unavoidable bit errors in satellite communications by performing parity check coding on labels to detect label errors caused by bit errors. "Insertion", IP packet loss, and LSP service bearing capacity decline

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  • Label inspection method in satellite MPLS network
  • Label inspection method in satellite MPLS network
  • Label inspection method in satellite MPLS network

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Embodiment Construction

[0047] The label verification method in the satellite MPLS network proposed by the present invention is described as follows in conjunction with the accompanying drawings and embodiments.

[0048] The label inspection method in the satellite MPLS network proposed by the present invention is based on the satellite MPLS network system which adopts "disassembly and assembly" (SAR) and "convergence" (CS) to deal with the transmission problem of variable-length IP data packets. At the same time, in this system, the label design adopts the construction method of the packet header embedded in the link layer packet, rather than the label construction method of the "cushion layer" scheme.

[0049] Such as image 3 As shown, the label checking method in the satellite MPLS network that the present invention proposes comprises steps:

[0050] S1, the ingress label boundary router (Ingress LER) constructs the egress label A used by the label boundary router;

[0051] S2, the ingress labe...

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Abstract

The present invention relates to label inspection method in satellite MPLS network, using single-parity check codes to encode each node using the labels in label switch path of satellite MPLS network; the label switching router and label edge router in the network proceed parity check to the labels and discard packet with false label. The invention can effectively check label error caused by error codes of satellite communication environment in the label switch path of the satellite MPLS network, so as to reduce frequency of packet 'error insertion' in LSP and finally reduce LSP business load carrying properties loss. The invention is provided with advantages of simple implementing, good impacts and suitable for different label design methods, possessing wide application foreground.

Description

technical field [0001] The invention relates to the technical field of satellite multi-protocol label switching technology MPLS, in particular to a label checking method in a satellite MPLS network. Background technique [0002] In order to realize the seamless integration with the terrestrial network, the design of the satellite network gradually transitions to the framework of IP-based services. With the development of multi-protocol label switching technology MPLS (Multi-Protocol Label Switching) in the ground IP network, how to implement MPLS technology in the satellite application environment has become an important issue in the current satellite network research. Since there are differences between satellite wireless communication systems and terrestrial wired communication systems in terms of bit error characteristics, propagation delay, bandwidth resources, and equipment processing capabilities, it is necessary to study the impact of these factors on the implementati...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L1/00H04L12/56H04L45/50
Inventor 晏坚翟立君曹志刚
Owner TSINGHUA UNIV
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