A buffering structure for sectioned share optical loop switching network

An optical packet switching and segmented technology, applied in the field of communication, can solve the problems of high cost and low utilization of optical fibers, and achieve the effect of reducing the number, facilitating expansion, and solving the problem of port competition.

Inactive Publication Date: 2008-01-16
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: Aiming at the shortcomings of low fiber utilization and high cost of the existing optical packet switching network buffer structure, the present invention proposes a new optical packet switching ne

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  • A buffering structure for sectioned share optical loop switching network
  • A buffering structure for sectioned share optical loop switching network

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[0012] The following describes the implementation of the present invention in detail with reference to the drawings and specific embodiments.

[0013] In order to avoid conflicts between optical packets at the switching matrix ports, a segmented shared buffer structure is adopted, so that the optical packets do not overlap in time when they arrive at the output port, so as to achieve the purpose of solving port competition. According to the analysis of the time before and after the optical packet buffering, it is known that after the optical packets pass through the fiber delay matrix of the segmented shared buffer structure, there will be no overlap on the output port. Based on this point, the present invention proposes a new cache structure as shown in FIG. 2—Segmented Shared Buffer Architecture (SSB).

[0014] As shown in Figure 2, the segmented shared optical packet switching network buffer structure consists of optical packet switching matrix output terminals (1, 2...N) respe...

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Abstract

The invention protects a sectional type shared packet switching network buffering structure and relates to optical communication technology field. The invention provides a novel optical packet switching network buffering structure, aiming at the property of the current optical packet switching network buffering structure about low optical fiber operating factor and high cost. The buffering structure adopts optical fiber sectional type share mechanism and consists of a plurality of optical fiber delay units with the same time delay. Except for the next level of delay optical fiber is directly connected with the optical packet switching matrix, two inlets of other optical delay unit on each level are connected with the outlet of the next level of delay optical fiber and are directly connected with the outlet of the optical packet switching matrix. The optical packet data packet in need of time delay chooses different delay optical fiber inlet, according to the time difference of the optical packet switching matrix outlet. The structure can fully improve the operating factor of the optical fiber delay line, reduce the core node cost and solve the interface competition problem of optical packet switching network.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to the structure of an optical packet switching network. Background technique [0002] Wavelength Division Multiplexing (WDM) technology brings great changes to network design. Optical Packet Switching (OPS) is a technology that introduces optical switching technology on the basis of optical wavelength division multiplexing to realize high-throughput and high-speed data transmission. It not only has the characteristics of wavelength routing being transparent to data rate and format, but also has the advantage of flexible and adjustable granularity in packet switching, and can effectively solve the "electronic bottleneck" problem currently existing on switching nodes of communication networks. It is one of the most promising supporting technologies in the future high-speed broadband data network. [0003] Normally, optical packet switching can be divided into two modes: synch...

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Application Information

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IPC IPC(8): H04L12/56H04J14/02H04Q11/00H04L49/9015
Inventor 张杰王汝言隆克平陈前斌黄胜常交法张普钊郭芳段振英吕科苇
Owner CHONGQING UNIV OF POSTS & TELECOMM
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