Methods and apparatus for differentiated services over a packet-based network

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8023521
APP PUB NO 20090141732A1
SERIAL NO

12276098

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Methods and apparatus for the provision of differentiated services in a packet-based network may be provided in a communications device such as a switch or router having input ports and output ports. Each output port is associated with a set of configurable queues that store incoming data packets from one or more input ports. A scheduling mechanism retrieves data packets from individual queues in accord with a specified configuration, providing both pure priority and proportionate de-queuing to achieve a guaranteed QoS over a connectionless network.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EXTREME NETWORKS, INC.SANTA CLARA, CA719

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Crowther, John B Nashua, US 3 29
Ryan, Robert Marlboro, US 24 352
Woo, Leon K Concord, US 4 84

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5533020 ATM cell scheduler 164 1994
 
Arris Group (1)
* 7653740 Method and system for bandwidth allocation tracking in a packet data network 1 2005
 
SONY CORPORATION (1)
* 7274668 Method and apparatus for packet transmission and bandwidth guaranteeing method 5 2001
 
CISCO TECHNOLOGY, INC. (1)
* 6167445 Method and apparatus for defining and implementing high-level quality of service policies in computer networks 625 1998
 
ALCATEL-LUCENT CANADA INC. (1)
* 6643293 Virtual connection shaping with hierarchial arbitration 22 1998
 
POINT REYES NETWORKS, INC. (1)
6570883 Packet scheduling using dual weight single priority queue 70 1999
 
THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (1)
6047000 Packet scheduling system 41 1997
 
FUJITSU LIMITED (1)
* 6785238 LAN relaying/switching apparatus 9 1999
 
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. (1)
7158528 Scheduler for a packet routing and switching system 23 2001
 
AT&T CORP. (1)
* 5541912 Dynamic queue length thresholds in a shared memory ATM switch 162 1994
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
NTT DOCOMO, INC. (4)
* 8615191 Distribution apparatus, terminal apparatus, system, and method 0 2009
* 8611939 Delivery apparatus, terminal apparatus, system and method 1 2009
* 2011/0244,904 DELIVERY APPARATUS, TERMINAL APPARATUS, SYSTEM AND METHOD 3 2009
* 2011/0237,179 DISTRIBUTION APPARATUS, TERMINAL APPARATUS, SYSTEM, AND METHOD 6 2009
* Cited By Examiner

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