Transmission method of multicast data based on hybrid optical switching network

A data transmission method and switching network technology, which is applied in the field of multicast data transmission using a hybrid optical switching network, can solve the problems that the destination node cannot complete reception, the cost of multicast routing increases, and the bandwidth utilization rate is low. Bandwidth utilization, reducing the amount of settings and setting costs and the occupancy of wavelength resources, and the effect of reducing loss
CN101702674BInactive Publication Date: 2011-11-16UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF ELECTRONICS SCI & TECH OF CHINA
Publication Date
2011-11-16
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention belongs to a transmission method of multicast data based on a hybrid optical switching network in the technology of network communication. The method comprises the steps of: setting the positions of each spectral node, dividing an internet area according to the spectral nodes, distributing a wavelength resource, building a multicast route, and transmitting multicast data. The methodfor setting up a network comprises: firstly, dividing the network into a plurality of small areas, setting only one spectral node in the each area, and setting the other nodes as common nodes to reduce the setting quantity, the cost and the occupancy quantity of the wavelength resource of the spectral nodes in a multicast network; in the field of network operating, organically combining an OCS all-optical network multicast technology with an OBS all-optical network multicast technology to enlarge the use ratio of bandwidth with the OBS technology in the area; and adopting a master-slave hybrid optical switching technology among the areas to reduce the packet loss rate. Therefore, the method can effectively reduce the setting quantity, the cost and the occupancy quantity of the wavelength resource of the spectral nodes in the multicast network, improves the use ratio of the bandwidth and the reliability of the network operation, and reduces the packet loss rate and the operation cost of the network, etc.
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Description

technical field

[0001] The invention belongs to the technical field of optical network communication, in particular to a method for transmitting multicast data using a hybrid optical switching network. Background technique

[0002] At present, basic optical network switching technologies include: optical circuit switching, namely OCS (Optical Circuit Switching,), optical packet switching, namely OPS (Optical Packet Switching,) and optical burst switching, namely OBS (Optical Burst Switching, OBS), although they All have achieved all-optical switching, and each has certain characteristics; but they also have their own shortcomings, especially when data transmission is performed in a network environment with frequent changes in data transmission volume or high burst switching, there are difficulties that are difficult to overcome. obstacles. in:

[0003] OCS switching technology establishes a "circuit" connection through the entire all-optical core network between edge route...

Claims

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