Unlock instant, AI-driven research and patent intelligence for your innovation.

Transmission method of mixed light exchanging network

A technology of switching network and transmission method, applied in data switching network, transmission system, digital transmission system, etc., can solve the problems of high idle rate of network resources, high packet loss rate, high network operation cost, and backward processing methods.

Inactive Publication Date: 2010-03-17
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, the above-mentioned hybrid optical switching network can only be carried out according to the preset transmission mode, and the transmission flexibility is poor; in terms of the security of service transmission, a protective backup optical path is preset for each interval (section) that may fail , these backup optical paths are idle when there is no fault in the network, so the network transmission efficiency is low, the processing method for network faults is backward, the idle rate of network resources is high, the waste is large, the packet loss rate and the operating cost of the network higher defect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Transmission method of mixed light exchanging network
  • Transmission method of mixed light exchanging network
  • Transmission method of mixed light exchanging network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: This embodiment takes a network composed of five nodes as an example. There are 5 wavelengths on each optical fiber in the network, and each link is a bidirectional link. image 3 Schematic diagram of the data transmission principle of this example:

[0035] A. Establish a hybrid optical switching network: according to the traffic matrix T = 0 0 0 20 50 0 0 10 0 0 3 0 0 0 0 0 0 4 0 15 0 7 0 0 0 Establish OCS optical path: a-b-c-d-e, a-b-c-d, d-e, b-d-c, e-c-a-b, occupying a total of 12 wavelengths; the average carrying capacity of each optical path (10 7 Bits / sec) respectively: 50, 20, 15, 10, 7; The OBS layer has the same structure as the physical topology network, and the available wavelengths of the OBS layer are the remaining 8 wavelength resources, and each link uses a wavelength channel as a transmission burst. The control channel that sends the head, and other wavelength channels are ...

Embodiment 2

[0048] Embodiment 2: This embodiment uses the NSFNET-14 network, and the physical topology network structure is as attached Figure 4 Shown. The link in the network is a two-way link, the number of wavelength multiplexing is 16, and the traffic matrix is:

[0049] T = 0 581 0 342 . . . 777 0 1171 856 . . . 4 109 0 206 . . . 0 0 0 0 . . . . . . . . . . . . . . . . . .

[0050] A. Establish a hybrid optical switching network: The OCS optical paths established according to the traffic matrix T are: 0-1, 1-0, 1-2, 1-0-4-3, ... 119 in total, the average of each optical path The carrying capacity is 581, 777, 1171, 856,...; The OBS network structure is the same as the physical topology network structure, and the remaining wavelength resources after the OCS optical path is established are all allocated to the OBS; when determining the OBS layer route, this embodiment first Calculate the first K shortest paths between...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to a data transmission method in a light network communication technique. In the transmission method, an OCS and OBS mixed switching network is firstly set, wherein both the OBSand OCS modules in the nodes of the network have the OBS and OCS switching ability. The transmission method comprises the following steps: when the network is under normal operation, transmitting alldata streams by an OCS optical path; when the data amount suddenly increases resulting in optical path overload, transmitting the overflowed data stream through the OBS; and transmitting the checked data to a destination node through the OBS optical path in the failure of the OCS optical path in the network. Accordingly, the invention has the characteristics of high network resource utilization ratio and transmission efficiency, effectively-improved safety and reliability of data transmission, greatly declined packet loss rate, low operating cost of the network, and the like. The invention overcomes the defects of low transmission efficiency, high packet loss rate and resource vacancy rate, large waste, higher operating cost, and the like caused by the condition that the data can be transmitted only in a predetermined way, and an optical path for devices is needed in an area where a fault occurs in the background art.

Description

Technical field [0001] The invention belongs to the technical field of optical network communication, and particularly relates to a transmission method of a hybrid optical switching network involving optical circuit switching (OCS) and optical burst switching (OBS). Background technique [0002] The original optical network was composed of the interconnection of optical fiber links between points, and was usually used to construct a backbone transport network. The optical signal is transmitted on a wavelength channel of the optical fiber, and each network node must convert the optical signal into an electrical signal for processing, and then convert it into an optical signal again for continued transmission. Because the connectivity of the backbone network topology is very low, about 70% of the data to be transmitted is forwarded data, that is, data needs to pass through multiple network nodes to reach the destination node. Since the processing speed of the electrical domain is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04Q11/00H04L12/56H04L1/00H04L12/701H04L12/861
Inventor 王晟王雄张瑾徐世中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA