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Integrated network coding label switching method

A technology of network coding and label switching, which is applied in the direction of data exchange network, digital transmission system, electrical components, etc., to achieve the effects of rapid deployment, improved implementation flexibility, and flexible use

Inactive Publication Date: 2014-11-19
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rapid service deployment capability and multi-protocol support of MPLS network make it the most reasonable choice to achieve this goal, however there is no systematic method on how to apply network coding in MPLS network

Method used

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  • Integrated network coding label switching method
  • Integrated network coding label switching method
  • Integrated network coding label switching method

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Embodiment Construction

[0035] see figure 1 , to realize the technical solution of the present invention is to define in the MPLS network all the packets forwarded by network coding and obtained by the same original packet through network coding as a coding equivalence class, and use a special mark-network coding mark (Network Coding Label, NCL) to be identified. We call the packet forwarded by the network coding method a network coding packet. Each network coding packet must carry an NCL that identifies its coding equivalence class. The network node determines the network coding operation for the packet according to the NCL of the packet. Compared with the network coding method, the packets forwarded according to the traditional store-and-forward method are called route-forward packets, and the labels carried by the route-forward packets are called Route Forwarding Labels (RFL), which are used to identify the forwarding equivalence class to which the packets belong. (i.e. all packets with the same ...

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Abstract

The invention provides an integrated network coding label switching method. The method comprises the following steps: (1) selecting part of nodes in a label switching network as network coding points of a coding sub-network for network coding to obtain network coding groups, simultaneously adding routing forwarding labels and network coding labels in the front of the network coding groups, and forwarding the labels and the network coding groups to the coding sub-network; and (2) selecting part of the nodes in label switching network as core nodes of the coding sub-network, receiving the network coding groups, again performing network coding operation, utilizing new routing forwarding labels and network coding labels to respectively replace the routing forwarding labels and the network coding labels in the step (1), and forwarding out the new routing forwarding labels and network coding labels together with the new network coding groups. By adopting the integrated network coding label switching method, network codes can be quickly deployed in the core network, and meanwhile, the influence on the conventional network architecture and equipment from the network codes is reduced to the minimum.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an integrated network coding label switching method suitable for embedding a network coding (Network Coding) function in a label switching (MPLS and GMPLS) network. Background technique [0002] MPLS technology introduces the underlying switching technology into the Internet as the "engine" of packet forwarding, so that the IP technology based on layer 3 routing protocol selection routing can use switching hardware to complete the packet forwarding operation, thereby providing faster forwarding speed and better performance. Excellent network performance while retaining the flexibility, robustness, and scalability of IP routing. Compared with the traditional IP network, the separation of routing and forwarding operations is realized by introducing the label switching mechanism in MPLS. The forwarding decision does not depend on a specific routing protocol, but can be determi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70H04L45/50H04L45/74
Inventor 闫江舟岳鹏刘增基
Owner XIDIAN UNIV
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