System for access control of unidirectional light bus network based on priority level dynamic regulation

Abstract

The invention discloses a system for access control of a unidirectional light bus network based on priority level dynamic regulation. The unidirectional light bus comprises a convening node, M-2 intermediate nodes and a termination node, wherein M is no less than 3 and is a natural number, and data stream of each node on the unidirectional light bus is in a single service type. The system for theaccess control of the unidirectional light bus network based on the priority level dynamic regulation comprises a node criticality parameter computing module, a movable node duty ratio computing module, a tag value computing module and a priority level judging module; and according to the priority level judging module, when a request reaches a node on the light bus, data is sequentially transmitted according to the priority level. The invention improves liveness of the light bus, meets real-time requirements, ensures that all the nodes (users) on same light bus meets information transmission delay requirements respectively, and simultaneously achieves the purpose of improving the use ratio of the light bus.

Description

technical field

[0001] The invention belongs to an access control system in the field of optical fiber communication network, and is suitable for dynamically setting priorities for nodes in an optical bus network to meet occasions where information has different delay requirements. Background technique

[0002] In recent years, with the explosive growth of data communication traffic, the types of business supported by the underlying optical communication network have also undergone great changes, from mainly supporting connection-oriented voice information to supporting data information and burst Data information is the main. In recent years, the considerable progress of optical fiber transmission technology, switching technology, and optoelectronic device technology has made the transmission capacity of a single optical fiber communication channel larger and higher, and the rate is getting higher and higher. From the original single channel 2.5Gb / s to the current single Th...

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