Apparatus and methods for scheduling packets in a broadband data stream

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6987732
APP PUB NO 20020110134A1
SERIAL NO

09737917

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A packet scheduler includes a packet manager interface, a policer, a congestion manager, a scheduler, and a virtual output queue (VOQ) handler. The policer assigns a priority to each packet. Depending on congestion levels, the congestion manager determines whether to send a packet based on the packet's priority assigned by the policer. The scheduler schedules packets in accordance with configured rates for virtual connections and group shapers. A scheduled packet is queued at a virtual output queue (VOQ) by the VOQ handler. In one embodiment, the VOQ handler sends signals to a packet manager (through the packet manager interface) to instruct the packet manager to transmit packets in a scheduled order.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TELLABS OPERATIONS, INC.NAPERVILLE, IL405

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bowles, Murray Santa Clara, CA 2 60
Curry, David San Jose, CA 11 111
Gracon, Glenn Palo Alto, CA 5 102
Hsu, Kenneth C San Jose, CA 3 79

Cited Art Landscape

Patent Info (Count) # Cites Year
 
ALCATEL CANADA INC. (1)
* 2004/0005,896 Flexible policing technique for telecommunications traffic 5 2002
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (1)
6111673 High-throughput, low-latency next generation internet networks using optical tag switching 154 1998
 
WSOU INVESTMENTS, LLC (1)
6067301 Method and apparatus for forwarding packets from a plurality of contending queues to an output 176 1998
 
NEC USA, INC., C&C RESEARCH LABORATORIES (1)
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EXTREME NETWORKS, INC. (1)
6104700 Policy based quality of service 633 1998
 
CISCO TECHNOLOGY, INC. (1)
5790522 Method and system for performing traffic congestion control in a data communication network 122 1995
 
XEROX CORPORATION (1)
5926459 Rate shaping in per-flow queued routing mechanisms for available bit rate service 87 1997
 
NOKIA TECHNOLOGIES OY (1)
6084855 Method and apparatus for providing fair traffic scheduling among aggregated internet protocol flows 72 1997
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (4)
* 7206284 Method and apparatus for automatic congestion avoidance for differentiated service flows 1 2002
* 2004/0100,901 Method and apparatus for automatic congestion avoidance for differentiated service flows 4 2002
* 7274663 System and method for testing differentiated services in a value add network service 1 2003
* 2005/0128,947 System and method for testing differentiated services in a value add network service 4 2003
 
Other [Check patent profile for assignment information] (1)
9826565 Broadband transmitter, broadband receiver, and methods thereof 0 2016
 
CONEXANT SYSTEMS, INC. (1)
* 2004/0151,184 Class-based rate control using multi-threshold leaky bucket 20 2003
 
EXTREME NETWORKS, INC. (2)
7813348 Methods, systems, and computer program products for killing prioritized packets using time-to-live values to prevent head-of-line blocking 12 2004
* 8072887 Methods, systems, and computer program products for controlling enqueuing of packets in an aggregated queue including a plurality of virtual queues using backpressure messages from downstream queues 4 2005
 
CISCO TECHNOLOGY, INC. (2)
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7369489 Unbiased token bucket 7 2002
 
POLYTECHNIC UNIVERSITY (1)
RE42600 Scheduling the dispatch of cells in non-empty virtual output queues of multistage switches using a pipelined arbitration scheme 0 2007
 
MICROSOFT TECHNOLOGY LICENSING, LLC (1)
* 7685287 Method and system for layering an infinite request/reply data stream on finite, unidirectional, time-limited transports 2 2002
 
TELLABS OPERATIONS, INC. (3)
7697430 Apparatus and methods for scheduling packets in a broadband data stream 3 2005
* 2009/0086,628 Apparatus and methods for scheduling packets in a broadband data stream 6 2005
* 2007/0237,074 Configuration of congestion thresholds for a network traffic management system 14 2006
 
FUJITSU LIMITED (2)
* 8023411 Bandwidth control apparatus and bandwidth control method 0 2009
* 2009/0196,176 BANDWIDTH CONTROL APPARATUS AND BANDWIDTH CONTROL METHOD 4 2009
 
LIVEU LTD. (19)
7948933 Remote transmission system 24 2007
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* 2010/0299,703 Live Uplink Transmissions And Broadcasting Management System And Method 12 2010
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8737436 Remote transmission system 8 2012
8467337 Remote transmission system 12 2013
8488659 Remote transmission system 12 2013
8964646 Remote transmission system 6 2013
9379756 Multi-modem communication using virtual identity modules 0 2013
8848697 Remote transmission system 2 2013
8787966 Multi-modem communication using virtual identity modules 10 2013
8811292 Remote transmission system 2 2013
8942179 Virtual broadband receiver, and system and method utilizing same 6 2013
9338650 Apparatus for cooperating with a mobile device 0 2014
9369921 Network assisted bonding 0 2014
9203498 Virtual broadband transmitter and virtual broadband receiver 2 2015
9712267 Live uplink transmissions and broadcasting management system and method 1 2015
9538513 Virtual broadband transmitter, virtual broadband receiver, and methods thereof 1 2015
* Cited By Examiner

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