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

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7450506
APP PUB NO 20050232155A1
SERIAL NO

11071483

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ATTORNEY / AGENT: (SPONSORED)

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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 OwnerAddressTotal Patents
CANON KABUSHIKI KAISHATOKYO44623

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawashima, Jun Setagaya-ku, JP 12 32
Morikawa, Kenichi Kawasaki, JP 24 152
Morimura, Kazuhiko Ohta-ku, JP 18 125

Cited Art Landscape

Patent Info (Count) # Cites Year
 
NEC CORPORATION (2)
6570873 System and method for scheduling reservation of traffic with priority 59 1999
* 2004/0114,516 Packet scheduling apparatus 25 2002
 
POINT REYES NETWORKS, INC. (1)
6570883 Packet scheduling using dual weight single priority queue 70 1999
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
MARVELL INTERNATIONAL LTD. (2)
9229792 Method and apparatus for weighted message passing 0 2008
9055019 Method and apparatus for message multicasting 1 2013
* Cited By Examiner

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