フレーム伝送装置 - 富士通株式会社

Title:

フレーム伝送装置

Document Type and Number:

Japanese Patent JP4208710

Kind Code:

B2

Abstract:

A frame transmission device which does not require a separate supervisory line and enables supervisory frames to efficiently enter subscriber traffic for transmission without securing a fixed bandwidth. A supervisory token computing section gives supervisory frames supervisory tokens as permission to transmit within a minimum bandwidth. Subscriber token computing sections give subscriber frames subscriber tokens as permission to transmit within respective set transmission bandwidths. A best-effort token computing section gives the frames best-effort tokens as permission to transmit by using an extra bandwidth. The supervisory or subscriber tokens are given to read frames from a supervisory queue or subscriber queues, and if a frame queue length is smaller than or equal to the best-effort tokens remains in the queue, a queue read control section reads and outputs the remaining frames from the queue by using the extra bandwidth of best-effort tokens.

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Inventors:

Daisuke Kobayashi
Hirofumi Yagawa
Tsunematsu Tsunematsu
Katsuhiko Hirashima
Yoshiya Sugimoto

Application Number:

JP2003426057A

Publication Date:

January 14, 2009

Filing Date:

December 24, 2003

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