Shared wavelength converter device and optical packet collision solving method
A technology of wavelength converter and wavelength conversion, which is applied in the direction of selection device, multiplexing system selection device, data switching network, etc., and can solve the problems of limited capacity, packet conflict of optical packet switching nodes, and large number of wavelength converters, etc. , to achieve the effect of improving utilization rate, reducing packet loss rate and small size
Active Publication Date: 2011-05-25
CHONGQING UNIV OF POSTS & TELECOMM
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[0004] To configure parametric wavelength converters or limited wavelength converters for existing optical packet switching nodes, the ability to solve optical packet conflicts is limited and the number of required wavelength converters is large, and the utilization rate of wavelength converters is low, and the technology for configuring full wavelength converters is immature problem, the present invention designs a feedback sharing based parameter wavelength converter and finite wavelength converter wavelength conversion structure and wavelength conversion distribution method to solve the problem of packet conflict in optical packet switching nodes
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[0014] The overall structure of the present invention is a wavelength conversion conflict resolution structure and a wavelength conversion distribution method of a parametric wavelength converter combined with a finite wavelength converter. The shared wavelength converter conflict resolution device part includes: a parametric wavelength converter, a finite wavelength converter, a multiplexer, The demultiplexer realizes the optical packet that reaches the entrance of the optical packet switching node and is blocked due to competition for output, and solves the conflict problem of the packet on the wavelength. Wavelength conversion allocation method: For the conflicting optical packets arriving at the input port of the optical packet switch, the parametric wavelength conversion is the first choice to convert the wavelengths of the conflicting optical packets in batches; if the conflicting optical packets do not find an available parametric wavelength converter, the second choice i...
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The invention relates to a shared wavelength conversion device and an optical wavelength conversion allocation method for optical packet switching, disclosing an optical wavelength conversion structure with parametric wavelength converters and limited wavelength converters based on feedback sharing to enable N output ports of optical packet switching nodes to share the wavelength conversion of the wavelength conversion structure, and disclosing a wavelength conversion method which can realize prior allocation of parametric wavelength conversion to control the wavelength conversion of collision packets. When an optical packet request which reaches the input port of an optical packet switch is failed to be scheduled to the output port of the switch, appropriate available parametric wavelength converters are selected at first to conduct batch wavelength conversion. If the selection of the parametric wavelength converters is failed, available limited wavelength converters are selected by optical packets to conduct wavelength conversion and the successfully converted optical packets are scheduled to the output port according to a wavelength channel request. The invention has the advantages that the wavelength conversion of collision optical packets can be realized to solve the problem of collision, the packet loss ratio of the optical packets can be solved preferably and the utilization ratio of the wavelength converters can be improved.
Description
technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a method for resolving conflicts in optical switching packets. technical background [0002] The development and application of wavelength-division multiplexing (WDM) and dense wavelength-division multiplexing (DWDM) transmission technologies in optical fiber communications have provided huge bandwidth for communication networks, and the rapid development of Internet services has shifted the information bottleneck of the network from information transmission to switching On the node, Optical Packet Switching (OPS) directly exchanges terabit (Tb / s) level fine-grained optical signals in the optical domain. It has the characteristics of high speed and wide bandwidth. The most effective method for network electronic information bottlenecks. However, at the optical packet switching node of the communication network, when multiple optical packets arriving at the sa...
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Login to View More IPC IPC(8): H04Q11/00H04L12/56H04L12/753
Inventor 刘焕淋张斌李祯石嵩磊谢芸徽
Owner CHONGQING UNIV OF POSTS & TELECOMM