CA2130403A1 - ATM Switching System and Cell Control Method - Google Patents
ATM Switching System and Cell Control MethodInfo
- Publication number
- CA2130403A1 CA2130403A1 CA2130403A CA2130403A CA2130403A1 CA 2130403 A1 CA2130403 A1 CA 2130403A1 CA 2130403 A CA2130403 A CA 2130403A CA 2130403 A CA2130403 A CA 2130403A CA 2130403 A1 CA2130403 A1 CA 2130403A1
- Authority
- CA
- Canada
- Prior art keywords
- burst data
- cells
- output
- switching system
- pvc
- 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
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/10—Packet switching elements characterised by the switching fabric construction
- H04L49/103—Packet switching elements characterised by the switching fabric construction using a shared central buffer; using a shared memory
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/10—Packet switching elements characterised by the switching fabric construction
- H04L49/104—Asynchronous transfer mode [ATM] switching fabrics
- H04L49/105—ATM switching elements
- H04L49/108—ATM switching elements using shared central buffer
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/25—Routing or path finding in a switch fabric
- H04L49/253—Routing or path finding in a switch fabric using establishment or release of connections between ports
- H04L49/255—Control mechanisms for ATM switching fabrics
-
- 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
- H04L49/3009—Header conversion, routing tables or routing tags
-
- 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
- H04L49/3027—Output 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
- H04L49/30—Peripheral units, e.g. input or output ports
- H04L49/3081—ATM peripheral units, e.g. policing, insertion or extraction
- H04L49/309—Header conversion, routing tables or routing tags
-
- 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
-
- 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
- H04L2012/563—Signalling, e.g. protocols, reference model
-
- 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
- H04L2012/5647—Cell loss
-
- 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
- H04L2012/5647—Cell loss
- H04L2012/5648—Packet discarding, e.g. EPD, PTD
-
- 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
- H04L2012/5652—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly
- H04L2012/5653—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly using the ATM adaptation layer [AAL]
- H04L2012/5658—Cell construction, e.g. including header, packetisation, depacketisation, assembly, reassembly using the ATM adaptation layer [AAL] using the AAL5
-
- 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
Abstract
An ATM switching system includes PVC
allocation circuits 13-i corresponding to output queues 14-i is disclosed. At the time of arrival of the leading cell of each burst data, if the output line has a room, the PVC of the burst data is stored as information for admission and identification. The subsequently-arriving cells having the same PVC identification information as the stored identification information are input to an output buffer, and the cells of the remaining burst data are all discarded. Even when a plurality of burst data compete for the same output line, the fact that all the cells other than the first-arriving admitted burst data are discarded prevents the cells from being input other than within a predetermined bandwidth and localizes the burst data affected by the cell discarding due to output queue overflow.
allocation circuits 13-i corresponding to output queues 14-i is disclosed. At the time of arrival of the leading cell of each burst data, if the output line has a room, the PVC of the burst data is stored as information for admission and identification. The subsequently-arriving cells having the same PVC identification information as the stored identification information are input to an output buffer, and the cells of the remaining burst data are all discarded. Even when a plurality of burst data compete for the same output line, the fact that all the cells other than the first-arriving admitted burst data are discarded prevents the cells from being input other than within a predetermined bandwidth and localizes the burst data affected by the cell discarding due to output queue overflow.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21017993A JP3044983B2 (en) | 1993-08-25 | 1993-08-25 | Cell switching method for ATM switching system |
JP05-210179 | 1993-08-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2130403A1 true CA2130403A1 (en) | 1995-02-26 |
CA2130403C CA2130403C (en) | 1999-09-28 |
Family
ID=16585092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2130403 Expired - Fee Related CA2130403C (en) | 1993-08-25 | 1994-08-18 | Atm switching system and cell control method |
Country Status (3)
Country | Link |
---|---|
US (7) | US5530698A (en) |
JP (1) | JP3044983B2 (en) |
CA (1) | CA2130403C (en) |
Families Citing this family (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3044983B2 (en) * | 1993-08-25 | 2000-05-22 | 株式会社日立製作所 | Cell switching method for ATM switching system |
US5926482A (en) | 1994-05-05 | 1999-07-20 | Sprint Communications Co. L.P. | Telecommunications apparatus, system, and method with an enhanced signal transfer point |
US6430195B1 (en) | 1994-05-05 | 2002-08-06 | Sprint Communications Company L.P. | Broadband telecommunications system interface |
US6314103B1 (en) | 1994-05-05 | 2001-11-06 | Sprint Communications Company, L.P. | System and method for allocating bandwidth for a call |
US6633561B2 (en) | 1994-05-05 | 2003-10-14 | Sprint Communications Company, L.P. | Method, system and apparatus for telecommunications control |
JPH10500542A (en) | 1994-05-05 | 1998-01-13 | スプリント コミュニケーションズ カンパニー,エル.ピー. | Method, system (system) and device for telecommunication control |
JP2757779B2 (en) * | 1994-06-21 | 1998-05-25 | 日本電気株式会社 | Buffer priority control method |
US5923657A (en) * | 1994-08-23 | 1999-07-13 | Hitachi, Ltd. | ATM switching system and cell control method |
JP3014080B2 (en) * | 1994-12-28 | 2000-02-28 | 三菱電機株式会社 | Exchange adapter and general-purpose computer |
JPH08293834A (en) * | 1995-04-24 | 1996-11-05 | Fujitsu Ltd | Optical parallel transmitting system and optical transmission device |
US5737314A (en) * | 1995-06-16 | 1998-04-07 | Hitachi, Ltd. | ATM exchange, ATM multiplexer and network trunk apparatus |
JP2820088B2 (en) * | 1995-11-15 | 1998-11-05 | 日本電気株式会社 | ATM cell transmission system |
JP3511763B2 (en) * | 1995-11-17 | 2004-03-29 | 株式会社日立製作所 | ATM network system and connection admission control method |
US8117298B1 (en) | 1996-02-26 | 2012-02-14 | Graphon Corporation | Multi-homed web server |
JP2929998B2 (en) * | 1996-03-22 | 1999-08-03 | 日本電気株式会社 | Cell buffer control method in ATM transfer |
US6034945A (en) | 1996-05-15 | 2000-03-07 | Cisco Technology, Inc. | Method and apparatus for per traffic flow buffer management |
US6304549B1 (en) * | 1996-09-12 | 2001-10-16 | Lucent Technologies Inc. | Virtual path management in hierarchical ATM networks |
JP2882384B2 (en) * | 1996-09-27 | 1999-04-12 | 日本電気株式会社 | Traffic shaping device |
US5905727A (en) * | 1996-10-08 | 1999-05-18 | International Business Machines Corporation | Method and system for transmitting ATM cells on an ATM link |
JP3765512B2 (en) * | 1997-03-17 | 2006-04-12 | 富士通株式会社 | Fixed-length cell transmission apparatus, fixed-length cell transmission apparatus, and fixed-length cell reception apparatus |
US6704327B1 (en) | 1997-05-09 | 2004-03-09 | Sprint Communications Company, L.P. | System and method for connecting a call |
JP3441044B2 (en) * | 1997-05-30 | 2003-08-25 | 富士通株式会社 | Persistent virtual connection reservation control device and readable storage medium for causing a computer to perform a persistent virtual connection reservation control function |
US6487202B1 (en) | 1997-06-30 | 2002-11-26 | Cisco Technology, Inc. | Method and apparatus for maximizing memory throughput |
US6430191B1 (en) | 1997-06-30 | 2002-08-06 | Cisco Technology, Inc. | Multi-stage queuing discipline |
US6201813B1 (en) * | 1997-06-30 | 2001-03-13 | Cisco Technology, Inc. | Method and apparatus for using ATM queues for segmentation and reassembly of data frames |
US6185209B1 (en) | 1997-07-11 | 2001-02-06 | Telefonaktiebolaget Lm Ericsson | VC merging for ATM switch |
US5963553A (en) * | 1997-07-11 | 1999-10-05 | Telefonaktiebolaget Lm Ericsson | Handling ATM multicast cells |
US6088359A (en) * | 1997-07-11 | 2000-07-11 | Telefonaktiebolaget Lm Ericsson | ABR server |
US6154459A (en) * | 1997-07-11 | 2000-11-28 | Telefonaktiebolaget Lm Ericsson | Data shaper for ATM traffic |
US6137807A (en) * | 1997-12-05 | 2000-10-24 | Whittaker Corporation | Dual bank queue memory and queue control system |
US6526060B1 (en) | 1997-12-05 | 2003-02-25 | Cisco Technology, Inc. | Dynamic rate-based, weighted fair scheduler with explicit rate feedback option |
US6597698B1 (en) * | 1997-12-19 | 2003-07-22 | Telefonaktiebolaget Lm Ericsson (Publ) | Coordinated cell discharge from ATM queue |
US6480501B1 (en) * | 1997-12-30 | 2002-11-12 | International Business Machines Corporation | Process for transporting a cell through a switching structure base on a single stage switch |
JP3075248B2 (en) * | 1998-01-19 | 2000-08-14 | 日本電気株式会社 | Asynchronous transfer mode switch |
US6922409B1 (en) | 1998-02-20 | 2005-07-26 | Sprint Communications Company L.P. | System and method for allocating bandwidth for a call |
US6574222B1 (en) | 1998-02-20 | 2003-06-03 | Sprint Communications Company, L.P. | System and method for allocating bandwidth for a call |
US7079534B1 (en) | 1998-02-20 | 2006-07-18 | Sprint Communications Company L.P. | System and method for allocating bandwidth for a call |
US6470019B1 (en) | 1998-02-20 | 2002-10-22 | Sprint Communications Company L.P. | System and method for treating a call for call processing |
US6625114B1 (en) * | 1998-03-13 | 2003-09-23 | Paradyne Corporation | System and method for connecting equipment that supports only permanent virtual circuits to a switched virtual circuit network |
US6091730A (en) * | 1998-03-30 | 2000-07-18 | Lucent Technologies Inc. | Control of asynchronous transfer mode (ATM) switching networks |
US6546022B1 (en) | 1998-04-03 | 2003-04-08 | Sprint Communications Company, L.P. | Method, system and apparatus for processing information in a telecommunications system |
KR100513030B1 (en) | 1998-04-08 | 2005-11-21 | 삼성전자주식회사 | Method for managing on-line pvc by use of svc of atm network |
US6160871A (en) | 1998-04-10 | 2000-12-12 | Sprint Communications Company, L.P. | Communications test system |
US6754177B1 (en) * | 1998-06-26 | 2004-06-22 | Verizon Corporate Services Group Inc. | Method and system for burst congestion control in an ATM network |
JP3075267B2 (en) | 1998-09-02 | 2000-08-14 | 日本電気株式会社 | ATM cell buffer read control device and control method |
US6430153B1 (en) * | 1998-09-04 | 2002-08-06 | Cisco Technology, Inc. | Trunk delay simulator |
US6785282B1 (en) | 1998-12-22 | 2004-08-31 | Sprint Communications Company L.P. | System and method for connecting a call with a gateway system |
US6724765B1 (en) | 1998-12-22 | 2004-04-20 | Sprint Communications Company, L.P. | Telecommunication call processing and connection system architecture |
US6982950B1 (en) | 1998-12-22 | 2006-01-03 | Sprint Communications Company L.P. | System and method for connecting a call in a tandem architecture |
US6888833B1 (en) | 1998-12-22 | 2005-05-03 | Sprint Communications Company L.P. | System and method for processing call signaling |
US6597689B1 (en) * | 1998-12-30 | 2003-07-22 | Nortel Networks Limited | SVC signaling system and method |
US20060174052A1 (en) * | 2005-02-02 | 2006-08-03 | Nobukazu Kondo | Integrated circuit and information processing device |
US7103068B1 (en) | 1999-05-04 | 2006-09-05 | Sprint Communication Company L.P. | System and method for configuring bandwidth transmission rates for call connections |
EP1180874A4 (en) * | 1999-05-28 | 2008-02-27 | Fujitsu Ltd | Message write device, message write method, message read device, message read method, memory address control circuit for write of variable length message, and memory address control circuit for read of variable length message |
WO2001001634A1 (en) * | 1999-06-24 | 2001-01-04 | Fujitsu Limited | Dynamic virtual channel manager |
JP3309834B2 (en) * | 1999-07-16 | 2002-07-29 | 日本電気株式会社 | ATM switching device and cell buffer usage rate monitoring method |
CN1328892C (en) | 1999-11-01 | 2007-07-25 | 松下电器产业株式会社 | Method and apparatus for information transmission |
WO2001035243A1 (en) * | 1999-11-08 | 2001-05-17 | Megaxess, Inc. | QUALITY OF SERVICE (QoS) NEGOTIATION PROCEDURE FOR MULTI-TRANSPORT PROTOCOL ACCESS FOR SUPPORTING MULTI-MEDIA APPLICATIONS WITH QoS ASSURANCE |
US6704314B1 (en) | 1999-12-15 | 2004-03-09 | Sprint Communications Company, L.P. | Method and apparatus to control cell substitution |
JP3508669B2 (en) * | 2000-01-18 | 2004-03-22 | 日本電気株式会社 | ATM connection bandwidth control method |
US6775292B1 (en) | 2000-01-24 | 2004-08-10 | Cisco Technology, Inc. | Method for servicing of multiple queues carrying voice over virtual circuits based on history |
US7142558B1 (en) | 2000-04-17 | 2006-11-28 | Cisco Technology, Inc. | Dynamic queuing control for variable throughput communication channels |
US6591317B1 (en) * | 2000-05-12 | 2003-07-08 | 3Com Corporation | Queue incorporating a duplicate counter per entry |
JP3640160B2 (en) * | 2000-07-26 | 2005-04-20 | 日本電気株式会社 | Router device and priority control method used therefor |
JP2002064497A (en) * | 2000-08-15 | 2002-02-28 | Nec Corp | Atm switch |
WO2002072265A1 (en) * | 2001-03-09 | 2002-09-19 | Gen-Probe Incorporated | Penetrable cap |
US7505467B1 (en) * | 2001-03-30 | 2009-03-17 | Cisco Technology, Inc. | Method and apparatus for dynamic bandwidth management for voice traffic in a digital communications network |
US20020150047A1 (en) * | 2001-04-17 | 2002-10-17 | Globespanvirata Incorporated | System and method for scheduling transmission of asynchronous transfer mode cells |
JP3965283B2 (en) * | 2001-07-02 | 2007-08-29 | 株式会社日立製作所 | Packet transfer device with multiple types of packet control functions |
JP4352693B2 (en) * | 2002-12-10 | 2009-10-28 | 株式会社日立製作所 | Disk array control device and control method thereof |
US7369491B1 (en) * | 2003-05-14 | 2008-05-06 | Nortel Networks Limited | Regulating data-burst transfer |
IL156923A (en) * | 2003-07-15 | 2009-08-03 | Eci Telecom Ltd | Method of handling atm packets at vp layer |
US7606158B2 (en) * | 2004-09-24 | 2009-10-20 | Cisco Technology, Inc. | Hierarchical flow control for router ATM interfaces |
US7240142B2 (en) * | 2004-10-06 | 2007-07-03 | Tellabs Petaluma, Inc. | Master electronics card with an adaptive bandwidth circuit |
US7480304B2 (en) * | 2004-12-29 | 2009-01-20 | Alcatel Lucent | Predictive congestion management in a data communications switch using traffic and system statistics |
FR2893471B1 (en) * | 2005-11-16 | 2008-01-25 | Arteris Sa | SYSTEM AND METHOD FOR STATIC ROUTING OF DATA PACKET STREAMS IN AN INTERCONNECTION NETWORK |
US20090229662A1 (en) * | 2008-03-13 | 2009-09-17 | Emcore Corporation | Off-Cut Substrates In Inverted Metamorphic Multijunction Solar Cells |
Family Cites Families (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US457687A (en) * | 1891-08-11 | Electric-light hanger | ||
US124977A (en) * | 1872-03-26 | Improvement in railway rails | ||
US448559A (en) * | 1891-03-17 | Baking-pan | ||
US528763A (en) * | 1894-11-06 | Combined cigarette-slide and match-box | ||
US426640A (en) * | 1890-04-29 | Elastic key for holding rock-drills | ||
US821258A (en) * | 1905-10-20 | 1906-05-22 | Harry B Rouse | Gas-generating apparatus. |
US920531A (en) * | 1908-06-10 | 1909-05-04 | Andrew J Bradley | Machine for printing on shoe-linings and the like. |
US930122A (en) * | 1908-10-14 | 1909-08-03 | Kanawha Chemical Engine Mfg Company | Apparatus for extinguishing fires. |
US975906A (en) * | 1909-07-19 | 1910-11-15 | James Taylor | Attachment for bedsteads and the like. |
US4821258A (en) * | 1986-08-06 | 1989-04-11 | American Telephone And Telegraph Company At&T Bell Laboratories | Crosspoint circuitry for data packet space division switches |
CA1292053C (en) * | 1986-09-16 | 1991-11-12 | Yoshito Sakurai | Time-division channel arrangement |
JPH0714164B2 (en) * | 1987-02-19 | 1995-02-15 | 富士通株式会社 | Header driven packet switch |
JPH088572B2 (en) * | 1987-03-09 | 1996-01-29 | 株式会社日立製作所 | Node device in communication system |
JP2865692B2 (en) * | 1989-02-22 | 1999-03-08 | 株式会社日立製作所 | Switching system and configuration method thereof |
JP2880271B2 (en) * | 1990-08-17 | 1999-04-05 | 株式会社日立製作所 | Band control method and circuit |
US4975906A (en) * | 1988-02-15 | 1990-12-04 | Hitachi, Ltd. | Network system |
US5144622A (en) * | 1988-02-15 | 1992-09-01 | Hitachi, Ltd. | Network system |
JPH02222586A (en) * | 1989-02-23 | 1990-09-05 | Fanuc Ltd | Turbo blower for laser and laser oscillation device |
JP2865706B2 (en) * | 1989-05-31 | 1999-03-08 | 株式会社日立製作所 | Switching system |
US5179557A (en) * | 1989-07-04 | 1993-01-12 | Kabushiki Kaisha Toshiba | Data packet communication system in which data packet transmittal is prioritized with queues having respective assigned priorities and frequency weighted counting of queue wait time |
US4955016A (en) * | 1989-08-29 | 1990-09-04 | At&T Bell Laboratories | Interconnect fabric providing connectivity between an input and arbitrary output(s) of a group of outlets |
JP2907886B2 (en) * | 1989-09-14 | 1999-06-21 | 株式会社日立製作所 | Switching system |
JPH03135248A (en) * | 1989-10-20 | 1991-06-10 | Fujitsu Ltd | Selection-type packet disusing system in packet exchange network |
US5050161A (en) * | 1989-12-04 | 1991-09-17 | Bell Communications Research, Inc. | Congestion management based on multiple framing strategy |
US5301333A (en) * | 1990-06-14 | 1994-04-05 | Bell Communications Research, Inc. | Tree structured variable priority arbitration implementing a round-robin scheduling policy |
US5231633A (en) * | 1990-07-11 | 1993-07-27 | Codex Corporation | Method for prioritizing, selectively discarding, and multiplexing differing traffic type fast packets |
US5157654A (en) * | 1990-12-18 | 1992-10-20 | Bell Communications Research, Inc. | Technique for resolving output port contention in a high speed packet switch |
US5130984A (en) * | 1990-12-18 | 1992-07-14 | Bell Communications Research, Inc. | Large fault tolerant packet switch particularly suited for asynchronous transfer mode (ATM) communication |
GB9106111D0 (en) * | 1991-03-22 | 1991-05-08 | Plessey Telecomm | Connectionless switching for an atm switch |
US5179556A (en) * | 1991-08-02 | 1993-01-12 | Washington University | Bandwidth management and congestion control scheme for multicast ATM networks |
JP2751698B2 (en) * | 1991-12-13 | 1998-05-18 | 日本電気株式会社 | Self-routing switch circuit |
US5426640A (en) * | 1992-01-21 | 1995-06-20 | Codex Corporation | Rate-based adaptive congestion control system and method for integrated packet networks |
US5276681A (en) * | 1992-06-25 | 1994-01-04 | Starlight Networks | Process for fair and prioritized access to limited output buffers in a multi-port switch |
GB2272612B (en) * | 1992-11-06 | 1996-05-01 | Roke Manor Research | Improvements in or relating to ATM signal processors |
GB9309468D0 (en) * | 1993-05-07 | 1993-06-23 | Roke Manor Research | Improvements in or relating to asynchronous transfer mode communication systems |
JP3129588B2 (en) | 1993-01-18 | 2001-01-31 | 日本電信電話株式会社 | Cell frame transfer method |
US5416769A (en) * | 1993-07-13 | 1995-05-16 | At&T Corp. | Controlled-feedback packet switching system |
JP3044983B2 (en) * | 1993-08-25 | 2000-05-22 | 株式会社日立製作所 | Cell switching method for ATM switching system |
US5457687A (en) * | 1993-09-02 | 1995-10-10 | Network Equipment Technologies, Inc. | Method and apparatus for backward explicit congestion notification (BECN) in an ATM network |
US5528763A (en) * | 1993-09-14 | 1996-06-18 | International Business Machines Corporation | System for admitting cells of packets from communication network into buffer of attachment of communication adapter |
-
1993
- 1993-08-25 JP JP21017993A patent/JP3044983B2/en not_active Expired - Lifetime
-
1994
- 1994-08-18 CA CA 2130403 patent/CA2130403C/en not_active Expired - Fee Related
- 1994-08-23 US US08/294,496 patent/US5530698A/en not_active Expired - Lifetime
-
1996
- 1996-02-21 US US08/604,615 patent/US5886982A/en not_active Expired - Lifetime
-
1998
- 1998-02-27 US US09/031,775 patent/US6389026B1/en not_active Expired - Lifetime
- 1998-06-15 US US09/094,675 patent/US6021130A/en not_active Expired - Fee Related
- 1998-06-15 US US09/094,678 patent/US6252877B1/en not_active Expired - Fee Related
-
2001
- 2001-06-19 US US09/883,191 patent/US20010036156A1/en not_active Abandoned
- 2001-09-25 US US09/960,999 patent/US7095726B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US6389026B1 (en) | 2002-05-14 |
US5886982A (en) | 1999-03-23 |
US20020006129A1 (en) | 2002-01-17 |
JPH0766807A (en) | 1995-03-10 |
US6252877B1 (en) | 2001-06-26 |
US20010036156A1 (en) | 2001-11-01 |
CA2130403C (en) | 1999-09-28 |
US7095726B2 (en) | 2006-08-22 |
JP3044983B2 (en) | 2000-05-22 |
US5530698A (en) | 1996-06-25 |
US6021130A (en) | 2000-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2130403A1 (en) | ATM Switching System and Cell Control Method | |
JP2856104B2 (en) | ATM switch | |
AU2044392A (en) | Shared-buffer-memory-based packet switching arrangement and method of controlling overflow thereof | |
US6396831B1 (en) | ATM cell switching system | |
EP0299473B1 (en) | Switching system and method of construction thereof | |
US5719865A (en) | Traffic shaping method and apparatus for ATM switching unit | |
US6388993B1 (en) | ATM switch and a method for determining buffer threshold | |
US6628650B1 (en) | Variable rate TDM switching system | |
JP2907886B2 (en) | Switching system | |
CA1292541C (en) | Hybrid time multiplex switching system with optimized buffer memory | |
JP3115546B2 (en) | Method for optimally transmitting ATM cells | |
EP0707397A2 (en) | A shared buffer memory switch for a ATM switching system and its broadcasting control method | |
EP0706298A2 (en) | Dynamic queue length thresholds in a shared memory ATM switch | |
EP0715436A2 (en) | ATM buffer memory priority controller | |
JPH05207062A (en) | Packet switching system | |
EP0336401A3 (en) | Method and system for packet exchange | |
CA2220889A1 (en) | Switch control circuit and switch control method of atm switchboard | |
CA2144147A1 (en) | Atm queuing and scheduling apparatus | |
EP0705007A2 (en) | ATM queuing and scheduling apparatus | |
EP1686742A2 (en) | Communiction control device and method for an ATM system applicable to an ABR mode | |
US6574232B1 (en) | Crossbar switch utilizing broadcast buffer and associated broadcast buffer management unit | |
JP2000050373A (en) | Variable speed digital exchange system | |
JPH0879271A (en) | Cell exchange device and cell exchange system | |
EP0833480B1 (en) | Contention control circuit | |
GB2293720A (en) | ATM queuing and scheduling apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |