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Novel ring network access controlling protocol

A ring network and access control technology, applied in the network field, can solve problems such as service loss, sending port competition, and receiving end conflicts, so as to improve utilization rate and network throughput, increase complexity, network bandwidth utilization rate and The effect of network throughput improvement

Inactive Publication Date: 2006-06-14
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Generally speaking, the conflict sources in the optical burst switching ring network include: 1) transmission wavelength conflict: if the transmission wavelength of each ring network node overlaps, the wavelength conflict needs to be considered; 2) the intermediate node and the receiving node exchange Conflict: If the intermediate node and the receiving node adopt switching mode instead of broadcasting, it is necessary to consider possible conflicts due to the limited capacity of the switching matrix; 3) Sending port competition: generally resolved by queuing for sending port resources ; 4) Receiving port conflict: When no special access control protocol is adopted in the optical burst switching ring network, conflicts will occur at the receiving end, resulting in service loss

Method used

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Examples

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Embodiment Construction

[0040] With reference to the accompanying drawings, an OBS ring network with 4 nodes is taken as an example to demonstrate the specific use of the TOKEN protocol in the OBS ring network.

[0041] Application environment: There are 4 optical burst switching ring network nodes on the ring network; each node has 2 sending ports and 2 receiving ports; each receiving port has 1 AOTF in front of it, which is used to tune and receive any wavelength; the ring network has a common 4×2 sending ports, each port is equipped with a different DWDM wavelength, a total of 8 different DWDM wavelengths. The ring network structure and node structure are shown in Figure 3 and Figure 4. The ring network here is a one-way ring, the distance between adjacent nodes is 10km, and the transmission delay of data transmission between adjacent nodes is 50us.

[0042] Assuming that the current node C has just used TOKEN-D-2 to send a data burst to node D, immediately fill in the "last data burst duration" field...

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Abstract

This invention relates to a new type of access control protocol, which can be used in the ring networks applying the light burst technology, in which, the nodes in a ring network control the shared network bandwidth and interfaces effectively to avoid the appearance of burst conflict to increase the usability and network performance light burst switch network resource.

Description

Technical field [0001] The present invention belongs to the category of network technology and is a new type of access control protocol. It can be applied to ring networks, especially ring networks that adopt optical burst switching technology. Through the use of resources such as shared network bandwidth and interfaces by each node in the ring network Effective control avoids the emergence of sudden conflicts, and improves the resource utilization rate and network performance of the optical burst switching network. Background technique [0002] Optical burst switching technology has become a research hotspot due to its improved utilization of network bandwidth resources and easy implementation compared to optical packet switching, and optical burst switching technology is used to construct a ring network suitable for application in a metro environment. It is one of the emerging issues. In the research of optical burst switching, how to reduce or avoid sudden conflicts and how to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/28H04L12/433
Inventor 纪越峰高鹏高泽华
Owner BEIJING UNIV OF POSTS & TELECOMM
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