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Full optical serial multicast module based on multi-level buffer share and its multicast method

A multicast and cache technology, applied in the field of optical communication

Inactive Publication Date: 2011-03-30
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method not only cannot obtain the quality of service guarantee for multicast services, but also has certain difficulties in hardware implementation due to issues such as power allocation.

Method used

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  • Full optical serial multicast module based on multi-level buffer share and its multicast method
  • Full optical serial multicast module based on multi-level buffer share and its multicast method
  • Full optical serial multicast module based on multi-level buffer share and its multicast method

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Embodiment Construction

[0033] The hardware structure of the all-optical serial multicast module based on multi-level cache sharing provided by the present invention is as follows: figure 1 shown. It mainly consists of 2n all-optical wavelength converters, n optical splitters with "one-to-three" function, two fiber delay lines (FDL1 and FDL2), n 1×3 optical switches, and two pairs of dense wavelength division Multiplexer and demultiplexer (DWDM MUX / DEMUX) and power compensation device (the example in the figure is an erbium fiber amplifier), among which n is a positive integer. The incident beam is divided into n multicast packets λ 1 ~λ n , respectively pass through an all-optical wavelength converter and then enter the corresponding optical switch. The 1×3 optical switch has three input terminals, one of which is connected to the above-mentioned all-optical wavelength converter, and the other two input terminals are respectively connected to the above-mentioned two optical fiber delay lines FDL...

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Abstract

The invention discloses a full gloss serial multicast mode and realizing method of multicast in the storing transferring course of multicast data pack through multi-grade optical fiber delaying line and optical shunt, which affirms the QoS in the multicast business in the loop, star, net typed network.

Description

technical field [0001] The present invention relates to an all-optical serial multicast module and a method for realizing multicast services by the multicast module, in particular to an all-optical serial multicast module based on a multi-level cache sharing mechanism and a method for realizing multicast. It belongs to the technical field of optical communication. Background technique [0002] With the rapid development of network technology, people's demand for broadband services is increasing. Industry insiders generally predict that in the foreseeable future, multimedia services including video on demand (VOD), distance learning, news release, and Internet TV will Data services will become the focus of a new round of competition among telecom operators. [0003] The above-mentioned multimedia data services all have one thing in common, that is, a server (media streaming server) publishes information, and several receivers receive and display the information. The number ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02
Inventor 纪越峰黄治同刘心王宏祥
Owner BEIJING UNIV OF POSTS & TELECOMM