Optical burst exchange route choosing method based on resource forecast

Abstract

This invention discloses one optical burst exchange route selecting method based on materials predicting, which comprises the following steps: reading one degree joint three status of transmission distance L1, updated circle T1, wavelength busy degree P1 and occupancy information W1; reading the send degree joint relative three status and bringing each parameter to the linear or non-linear information prediction module to compute out relative joint status information reliable amending factorªŠ to compute out joint instant materials information; If w is zero then amending 0+ªŠ as 1-ªŠ to use one degree joint instant materials signal subject to form matrix A and the second degree joint instant information to form subject matrix B and computing Qú¢Aí‡Bíõto select largest Q value as burst transmission reliable path.

Description

technical field [0001] The invention relates to a resource prediction-based optical burst switching routing selection method. Background technique [0002] With the rapid growth of IP services around the world, the demand for transmission network bandwidth and switching system capacity is increasing at an unprecedented speed. At present, with the maturity of Dense Wavelength Division Multiplexing (DWDM), it is possible to make full use of the massive bandwidth of optical fibers (each optical fiber can exceed 10Tbps). As a result, the switching equipment part becomes the bottleneck of the communication network. At present, the speed of commercialized IP routers can reach 10-120Gbps, but there is still a big gap compared with the transmission capacity of DWDM. Realizing all-optical switching is a feasible solution to this bottleneck. According to the existing communication mode in the communication network, people put forward three schemes on how to realize switching and tra...

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Problems solved by technology

[0003] 1) Optical path switching is the optical wavelength routing switching solution (OCS). Wavelength routing belongs to coarse-grained switching, and its route selection and link establishment time are relatively long. flexibility

[0004] 2) Optical Packet Switching (OPS), but due to the lack of high-speed optical logic devices, optical buffer memory, etc., it is still in the research stage and has not been put into practical applications

In this way, the entire network is regarded as a quasi-static network. However, other nodes may also be selecting routes between two state refreshes. If other nodes also select the channel selected by source node A, then when two burst packets arrive at the same time the channel, it will cause a burst packet to block

This routing method will cause a large blocking rate and packet loss rate in the actual network, especially when the network is relatively large and in the optical burst switching network using the Just in Time protocol.

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