Communication apparatus for transmitting frames and priority control method for transmitting frames

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United States of America Patent

PATENT NO 7450506
APP PUB NO 20050232155A1
SERIAL NO

11071483

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Abstract

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Frames of different priority levels are queued in a plurality of queues, e.g., first priority queue, second priority queue and third priority queue. If it is judged that a lower priority frame can be completely transmitted by the timing of transmitting a higher-priority frame based on the frame length, the lower-priority frame is transmitted, and otherwise, the lower-priority frame is not transmitted. Accordingly, frame transmission control that is applicable to fixed-length frames and variable-length frames is realized in a frame scheduler for an apparatus having a function of outputting frames. Also, priority-based control of frames which is suitable for a layer 2 switch or the like and which is adaptable to processing in a high-speed network is realized without providing an IP fragment.

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHA30-2 SHIMOMARUKO 3-CHOME OHTA-KU TOKYO 1468501 JAPAN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawashima, Jun Setagaya-ku, JP 12 34
Morikawa, Kenichi Kawasaki, JP 26 164
Morimura, Kazuhiko Ohta-ku, JP 18 135

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