All-optical sharing cache router based on optical fiber delay lines and working method of all-optical sharing cache router

A fiber optic delay line and shared cache technology, applied in optical fiber transmission, digital transmission systems, electrical components, etc., to achieve the effect of ensuring throughput, optimizing cache utilization, and avoiding port conflicts

Inactive Publication Date: 2014-03-26
NANJING UNIV
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  • Claims
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Problems solved by technology

For a small number of optical packets, this implementation is relatively simple, but in the actual network node, each port will have a large number of optical packets pouring in continuous

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  • All-optical sharing cache router based on optical fiber delay lines and working method of all-optical sharing cache router
  • All-optical sharing cache router based on optical fiber delay lines and working method of all-optical sharing cache router
  • All-optical sharing cache router based on optical fiber delay lines and working method of all-optical sharing cache router

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Embodiment Construction

[0033] To achieve the object of the present invention, the present invention provides an all-optical shared cache router structure based on fiber delay lines, which will be described in detail below with reference to the accompanying drawings.

[0034] Traditional network routers based on optical-electrical-optical conversion have become the bottleneck of network transmission, limiting network transmission speed. At present, router clusters are mainly used in POP, but due to the large amount of power consumption, it is close to the upper limit of power consumption. The all-optical router structure of the present invention avoids low-efficiency optical-electrical-optical conversion, and realizes the two main functions of the router, optical packet buffering and optical packet switching, respectively through the currently physically realizable optical fiber delay line and optical switching matrix. In particular, optical packet storage is mainly realized through dynamic cache. T...

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Abstract

The invention discloses an all-optical sharing cache router based on optical fiber delay lines and a working method of the all-optical sharing cache router. The router comprises a sharing cache queue and a logic control unit. The sharing cache queue is composed of N input ports, N output ports, N discarding ports, a (N + M) * (N + M) non-blocking optical switching matrix and the M optical fiber delay lines. By arranging the lengths of the optical fiber delay lines and using an optical packet schedule algorithm based on sorting, according to the router and the working method thereof, the priority dispatch sharing cache optical router function under any optical grouping reaching situation can be simulated.

Description

technical field [0001] The invention relates to an all-optical router structure, which specifically utilizes fiber delay lines to realize dynamic buffering of optical packets, realizes sharing of optical buffers through a feedback structure, and then ensures priority scheduling of optical packets through a scheduling strategy based on sorting and makes full use of optical fiber delays Line storage resource, realizes an all-optical shared cache router structure based on fiber delay line. Background technique [0002] In the optical transmission network, since there is no physical optical memory, at the network nodes that transmit information in a store-and-forward manner, people usually first convert the arriving optical signal into an electrical signal, and then pass it through the electrical memory ( Such as RAM) storage, and then converted into an optical signal and sent to the optical channel when the port is idle. However, this "optical-electrical-optical" conversion me...

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Application Information

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IPC IPC(8): H04L12/933H04L12/865H04B10/25H04L47/6275
Inventor 王晓亮张潇姜晓鸿陆桑璐
Owner NANJING UNIV
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