CA2119205A1 - Improvements in or relating to asynchronous transfer mode communication systems - Google Patents
Improvements in or relating to asynchronous transfer mode communication systemsInfo
- Publication number
- CA2119205A1 CA2119205A1 CA002119205A CA2119205A CA2119205A1 CA 2119205 A1 CA2119205 A1 CA 2119205A1 CA 002119205 A CA002119205 A CA 002119205A CA 2119205 A CA2119205 A CA 2119205A CA 2119205 A1 CA2119205 A1 CA 2119205A1
- Authority
- CA
- Canada
- Prior art keywords
- ports
- output
- input
- output port
- available
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/50—Overload detection or protection within a single switching element
- H04L49/505—Corrective measures
- H04L49/508—Head of Line Blocking Avoidance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L12/5602—Bandwidth control in ATM Networks, e.g. leaky bucket
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3018—Input queuing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3081—ATM peripheral units, e.g. policing, insertion or extraction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/50—Overload detection or protection within a single switching element
- H04L49/501—Overload detection
- H04L49/503—Policing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
- H04Q11/0478—Provisions for broadband connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5629—Admission control
- H04L2012/5631—Resource management and allocation
- H04L2012/5632—Bandwidth allocation
- H04L2012/5635—Backpressure, e.g. for ABR
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5638—Services, e.g. multimedia, GOS, QOS
- H04L2012/5646—Cell characteristics, e.g. loss, delay, jitter, sequence integrity
- H04L2012/5651—Priority, marking, classes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
- H04L2012/5679—Arbitration or scheduling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
- H04L2012/5681—Buffer or queue management
- H04L2012/5682—Threshold; Watermark
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/54—Store-and-forward switching systems
- H04L12/56—Packet switching systems
- H04L12/5601—Transfer mode dependent, e.g. ATM
- H04L2012/5678—Traffic aspects, e.g. arbitration, load balancing, smoothing, buffer management
- H04L2012/5681—Buffer or queue management
- H04L2012/5683—Buffer or queue management for avoiding head of line blocking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/30—Peripheral units, e.g. input or output ports
Abstract
An ATM communication system comprising an ATM switch having a plurality of input ports and a plurality of output ports, each of the said input ports being fed from an input port server and each of the said output ports being arranged to feed an output port server. The input port servers each have a plurality of buffer stores one for each of the output ports to which said output port data is transmitted through the switch. Each buffer store in the input port servers is arranged to interrogate the output port server with which it communicates by means of a bandwidth request before the transmission of data, thereby to determine whether output port server data handling capacity is available, whereby ATM switch operation during periods of peak traffic is facilitated. The system includes a queuing arrangement for bandwidth requests received during periods when there is no available bandwidth capacity, the arrangement being such that requests are released in a predetermined order when capacity becomes available.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9309468.8 | 1993-05-07 | ||
GB939309468A GB9309468D0 (en) | 1993-05-07 | 1993-05-07 | Improvements in or relating to asynchronous transfer mode communication systems |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2119205A1 true CA2119205A1 (en) | 1994-11-08 |
CA2119205C CA2119205C (en) | 2004-02-17 |
Family
ID=10735122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002119205A Expired - Fee Related CA2119205C (en) | 1993-05-07 | 1994-03-16 | Improvements in or relating to asynchronous transfer mode communication systems |
Country Status (7)
Country | Link |
---|---|
US (1) | US5448559A (en) |
EP (1) | EP0624015B1 (en) |
JP (1) | JP3497556B2 (en) |
AT (1) | ATE240620T1 (en) |
CA (1) | CA2119205C (en) |
DE (1) | DE69432655T2 (en) |
GB (1) | GB9309468D0 (en) |
Families Citing this family (66)
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JP3044983B2 (en) | 1993-08-25 | 2000-05-22 | 株式会社日立製作所 | Cell switching method for ATM switching system |
GB2288096B (en) * | 1994-03-23 | 1999-04-28 | Roke Manor Research | Apparatus and method of processing bandwidth requirements in an ATM switch |
GB2288947B (en) * | 1994-04-20 | 1999-01-06 | Roke Manor Research | Improvements in or relating to ATM communication systems |
US6134218A (en) * | 1994-04-28 | 2000-10-17 | Pmc-Sierra (Maryland), Inc. | Many dimensional congestion detection system and method |
US5657322A (en) * | 1994-06-08 | 1997-08-12 | Alcatel N.V. | Device for the equalization of data flow |
DE69430627T2 (en) * | 1994-06-28 | 2002-10-17 | Hewlett Packard Co | Method and device for planning cell transmission of virtual channels with guaranteed bandwidth |
AUPM699394A0 (en) * | 1994-07-25 | 1994-08-18 | Curtin University Of Technology | Link level controlled access to available asynchronous network service |
US5923657A (en) * | 1994-08-23 | 1999-07-13 | Hitachi, Ltd. | ATM switching system and cell control method |
US5949781A (en) * | 1994-08-31 | 1999-09-07 | Brooktree Corporation | Controller for ATM segmentation and reassembly |
DE69434329T2 (en) * | 1994-08-31 | 2006-03-09 | Hewlett-Packard Development Co., L.P., Houston | Method and device for regulating cell transmissions via virtual channels |
DE19507569C2 (en) * | 1995-03-03 | 1997-02-13 | Siemens Ag | Circuit arrangement for receiving and forwarding message cells through an ATM communication device |
DE69638195D1 (en) | 1995-03-08 | 2010-07-22 | British Telecomm | BROADBAND LEARNING NETWORK |
EP0813783A1 (en) | 1995-03-08 | 1997-12-29 | Oxford Brookes University | Broadband switching system |
AU720173B2 (en) * | 1995-03-08 | 2000-05-25 | British Telecommunications Public Limited Company | Broadband switching network |
US5623492A (en) * | 1995-03-24 | 1997-04-22 | U S West Technologies, Inc. | Methods and systems for managing bandwidth resources in a fast packet switching network |
GB9514206D0 (en) | 1995-07-12 | 1995-09-13 | British Telecomm | Rate controller |
AU6501496A (en) | 1995-07-19 | 1997-02-18 | Ascom Nexion Inc. | Point-to-multipoint transmission using subqueues |
WO1997004565A1 (en) * | 1995-07-19 | 1997-02-06 | Fujitsu Limited | Priority arbitration for point-to-point and multipoint transmission |
JPH09121217A (en) * | 1995-08-23 | 1997-05-06 | Fujitsu Ltd | Method for burst transfer |
JPH11512583A (en) | 1995-09-14 | 1999-10-26 | フジツウ ネットワーク コミュニケーションズ,インコーポレイテッド | Transmitter-controlled flow control for buffer allocation in a wide area ATM network |
FR2740283B1 (en) * | 1995-10-24 | 1997-12-19 | Thomson Csf | DEVICE FOR REGULATING THE ATM CELL FLOW WITHIN AN ATM BREWER |
SG68599A1 (en) | 1995-10-26 | 1999-11-16 | Matsushita Electric Ind Co Ltd | File system |
DE19540160C2 (en) * | 1995-10-27 | 2000-05-31 | Andreas Kirstaedter | Method for coordination via serial lines of input-buffered ATM switching devices to avoid output blockages |
US5644575A (en) * | 1995-12-06 | 1997-07-01 | Dsc Communications Corporation | Managing memory within a local telecommunications network |
CA2241957C (en) * | 1996-01-09 | 2004-05-25 | British Telecommunications Public Limited Company | A service multiplexer with bandwith control and signal source feedback |
JP2000517488A (en) | 1996-01-16 | 2000-12-26 | フジツウ ネットワーク コミュニケーションズ,インコーポレイテッド | Reliable and flexible multicast mechanism for ATM networks |
US5790545A (en) * | 1996-03-14 | 1998-08-04 | Motorola Inc. | Efficient output-request packet switch and method |
US6212182B1 (en) * | 1996-06-27 | 2001-04-03 | Cisco Technology, Inc. | Combined unicast and multicast scheduling |
US5768257A (en) * | 1996-07-11 | 1998-06-16 | Xylan Corporation | Input buffering/output control for a digital traffic switch |
US6442172B1 (en) | 1996-07-11 | 2002-08-27 | Alcatel Internetworking, Inc. | Input buffering and queue status-based output control for a digital traffic switch |
FR2751160B1 (en) | 1996-07-12 | 1998-10-30 | Thomson Csf | METHOD OF DETECTION OF UPSTREAM CONGESTION WITHIN AN ATM SWITCH WITH DISTRIBUTED ARCHITECTURE AND INPUT STORAGE |
US5748905A (en) | 1996-08-30 | 1998-05-05 | Fujitsu Network Communications, Inc. | Frame classification using classification keys |
US6229812B1 (en) * | 1996-10-28 | 2001-05-08 | Paxonet Communications, Inc. | Scheduling techniques for data cells in a data switch |
WO1998020652A1 (en) * | 1996-11-08 | 1998-05-14 | Integrated Telecom Technology, Inc. | Method and apparatus for detecting disabled physical devices and deleting undeliverable cells |
US6078577A (en) * | 1996-11-21 | 2000-06-20 | Motorola, Inc. | System and method for packet data communication |
US5953335A (en) * | 1997-02-14 | 1999-09-14 | Advanced Micro Devices, Inc. | Method and apparatus for selectively discarding packets for blocked output queues in the network switch |
KR100212064B1 (en) | 1997-05-21 | 1999-08-02 | 윤종용 | 2n x n multiplexer switch architecture |
US6243751B1 (en) * | 1997-06-11 | 2001-06-05 | Oracle Corporation | Method and apparatus for coupling clients to servers |
US6088728A (en) * | 1997-06-11 | 2000-07-11 | Oracle Corporation | System using session data stored in session data storage for associating and disassociating user identifiers for switching client sessions in a server |
US6393483B1 (en) * | 1997-06-30 | 2002-05-21 | Adaptec, Inc. | Method and apparatus for network interface card load balancing and port aggregation |
GB2327317B (en) | 1997-07-11 | 2002-02-13 | Ericsson Telefon Ab L M | Access control and resourse reservation in a communications network |
KR100233091B1 (en) * | 1997-10-23 | 1999-12-01 | 윤종용 | Atm traffic control apparatus and method |
US6934253B2 (en) * | 1998-01-14 | 2005-08-23 | Alcatel | ATM switch with rate-limiting congestion control |
US6594240B1 (en) * | 1998-05-22 | 2003-07-15 | Lucent Technologies Inc. | Methods and apparatus for random backoff based access priority in a communications system |
IL125271A0 (en) * | 1998-07-08 | 1999-03-12 | Galileo Technology Ltd | Head of line blocking |
US6496504B1 (en) * | 1998-08-06 | 2002-12-17 | Ricoh Company, Ltd. | Smart allocation of bandwidth for multiple independent calls on a digital network |
FR2784468B1 (en) * | 1998-10-08 | 2000-12-15 | Cit Alcatel | ATM SWITCHING MATRIX HAVING A PASSIVE OPTICAL CORE |
US9239763B2 (en) | 2012-09-28 | 2016-01-19 | Oracle International Corporation | Container database |
GB9828142D0 (en) | 1998-12-22 | 1999-02-17 | Power X Limited | Approximate state control mechanism |
AU4482000A (en) | 1999-04-23 | 2000-11-10 | Sony Electronics Inc. | Method of and apparatus for implementing and sending an asynchronous control mechanism packet |
US6909715B1 (en) * | 1999-08-31 | 2005-06-21 | Broadcom Corporation | Method and apparatus for the reduction of upstream request processing latency in a cable modem termination system |
GB2354133A (en) * | 1999-08-31 | 2001-03-14 | Mitel Corp | Multimedia QOS |
US6625155B1 (en) * | 1999-09-28 | 2003-09-23 | Lucent Technologies Inc. | Model-based admission control adjustment in data networks |
US7042906B2 (en) * | 2001-03-28 | 2006-05-09 | Brilliant Optical Networks | Method to control a special class of OBS/LOBS and other burst switched network devices |
US20030046398A1 (en) * | 2001-08-29 | 2003-03-06 | Charles Buckley | Method and system for managing a plurality of console devices in a network |
WO2004032437A2 (en) * | 2002-10-02 | 2004-04-15 | Cisco Technology, Inc. | Method and apparatus for processing superframes using an arbitration system |
US7502824B2 (en) * | 2004-08-12 | 2009-03-10 | Oracle International Corporation | Database shutdown with session migration |
US7415470B2 (en) * | 2004-08-12 | 2008-08-19 | Oracle International Corporation | Capturing and re-creating the state of a queue when migrating a session |
DE102004062116B3 (en) * | 2004-12-23 | 2006-05-11 | Ab Skf | Bearing arrangement for computer tomography has bearing with inner ring, which stores construction unit, and outer ring, which is connected with damping element, fitted as single element and contain hollow cylindrical basic outline |
US7480304B2 (en) * | 2004-12-29 | 2009-01-20 | Alcatel Lucent | Predictive congestion management in a data communications switch using traffic and system statistics |
US9176772B2 (en) * | 2005-02-11 | 2015-11-03 | Oracle International Corporation | Suspending and resuming of sessions |
US8549038B2 (en) | 2009-06-15 | 2013-10-01 | Oracle International Corporation | Pluggable session context |
US10469404B1 (en) * | 2014-05-12 | 2019-11-05 | Google Llc | Network multi-level rate limiter |
US10387387B2 (en) | 2015-12-17 | 2019-08-20 | Oracle International Corporation | Enabling multi-tenant access to respective isolated data sets organized using different application schemas |
US10289617B2 (en) | 2015-12-17 | 2019-05-14 | Oracle International Corporation | Accessing on-premise and off-premise datastores that are organized using different application schemas |
US10303894B2 (en) | 2016-08-31 | 2019-05-28 | Oracle International Corporation | Fine-grained access control for data manipulation language (DML) operations on relational data |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5285445A (en) * | 1987-12-17 | 1994-02-08 | U.S. Philips Corporation | Switching network and switching network control for a switching node in a wideband transmission system |
CA2012868C (en) * | 1989-03-23 | 1994-03-22 | Shin-Ichiro Hayano | Call control with transmission priority in a packet communication network of an atm type |
JPH03182140A (en) * | 1989-12-11 | 1991-08-08 | Mitsubishi Electric Corp | Common buffer type exchange |
CA2038646C (en) * | 1990-03-20 | 1995-02-07 | Katsumi Oomuro | Atm communication system with optimal traffic control by changing the allocated bandwidth |
US5303078A (en) * | 1990-12-18 | 1994-04-12 | Bell Communications Research, Inc. | Apparatus and method for large scale ATM switching |
US5179556A (en) * | 1991-08-02 | 1993-01-12 | Washington University | Bandwidth management and congestion control scheme for multicast ATM networks |
US5291481A (en) * | 1991-10-04 | 1994-03-01 | At&T Bell Laboratories | Congestion control for high speed packet networks |
-
1993
- 1993-05-07 GB GB939309468A patent/GB9309468D0/en active Pending
-
1994
- 1994-03-08 DE DE69432655T patent/DE69432655T2/en not_active Expired - Fee Related
- 1994-03-08 AT AT94103484T patent/ATE240620T1/en not_active IP Right Cessation
- 1994-03-08 EP EP94103484A patent/EP0624015B1/en not_active Expired - Lifetime
- 1994-03-16 CA CA002119205A patent/CA2119205C/en not_active Expired - Fee Related
- 1994-05-02 JP JP09356994A patent/JP3497556B2/en not_active Expired - Fee Related
- 1994-05-02 US US08/235,926 patent/US5448559A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0624015B1 (en) | 2003-05-14 |
EP0624015A2 (en) | 1994-11-09 |
DE69432655D1 (en) | 2003-06-18 |
DE69432655T2 (en) | 2004-03-18 |
JP3497556B2 (en) | 2004-02-16 |
US5448559A (en) | 1995-09-05 |
JPH0715444A (en) | 1995-01-17 |
EP0624015A3 (en) | 2001-10-10 |
CA2119205C (en) | 2004-02-17 |
GB9309468D0 (en) | 1993-06-23 |
ATE240620T1 (en) | 2003-05-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |