+

WO1998027692A1 - APPAREIL ET PROCEDE DE TRAITEMENT DE PARAMETRES 'QUALITE DE SERVICE' (QoS) EN VUE D'UNE AGREGATION PAR CATEGORIE DE SERVICE - Google Patents

APPAREIL ET PROCEDE DE TRAITEMENT DE PARAMETRES 'QUALITE DE SERVICE' (QoS) EN VUE D'UNE AGREGATION PAR CATEGORIE DE SERVICE Download PDF

Info

Publication number
WO1998027692A1
WO1998027692A1 PCT/US1997/020107 US9720107W WO9827692A1 WO 1998027692 A1 WO1998027692 A1 WO 1998027692A1 US 9720107 W US9720107 W US 9720107W WO 9827692 A1 WO9827692 A1 WO 9827692A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
virtual channels
equal
virtual
rate
Prior art date
Application number
PCT/US1997/020107
Other languages
English (en)
Inventor
Krishnan Ramakrishnan
Whay Chiou Lee
Original Assignee
Motorola Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Motorola Inc. filed Critical Motorola Inc.
Priority to EP97946518A priority Critical patent/EP0947075A4/fr
Priority to AU51674/98A priority patent/AU5167498A/en
Priority to CA002274844A priority patent/CA2274844A1/fr
Publication of WO1998027692A1 publication Critical patent/WO1998027692A1/fr

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
    • 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
    • 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
    • H04L2012/5619—Network Node Interface, e.g. tandem connections, transit switching
    • H04L2012/5624—Path aspects, e.g. path bundling
    • 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

Definitions

  • the invention relates generally to communication systems and, more particularly, to aggregating ATM virtual channels to allow for efficient allocation and utilization of available network bandwidth.
  • An ATM network consists of a number of interconnected ATM switches which route ATM cells from a source ATM User to a destination ATM User.
  • Each ATM User interfaces to the ATM network by means of an ATM Network Interface Unit (NIU).
  • NIU ATM Network Interface Unit
  • a unidirectional connection from the source ATM User (via a source NIU) to the destination ATM User (via a destination NIU) across the ATM network is called a Virtual Channel Connection (VCC).
  • VCC has specific QoS requirements which can be characterized generally in terms of one of five ATM service categories, specifically Constant Bit Rate (CBR), Real-Time Variable Bit Rate (RT-VBR), Non-Real-Time Variable Bit Rate (NRT- VBR), Available Bit Rate (ABR), and Unspecified Bit Rate (UBR).
  • CBR Constant Bit Rate
  • RT-VBR Real-Time Variable Bit Rate
  • NRT- VBR Non-Real-Time Variable Bit Rate
  • ABR Available Bit Rate
  • UBR Unspecified Bit Rate
  • each ATM service category is
  • FIG. 5 shows an exemplary embodiment of a Virtual Channel Switch in which Virtual Channels are aggregated according to their ATM Service Categories
  • FIG. 6 shows an exemplary embodiment of a Virtual Channel
  • FIG. 8 is a flow diagram for determining the QoS requirements for an aggregate of CBR and CBR-like connections
  • FIG. 9 is a flow diagram for determining the QoS requirements for an aggregate of CBR-like RT-VBR connections
  • FIG. 10 is a flow diagram for determining the QoS requirements for an aggregate of "bursty" RT-VBR connections
  • FIG. 1 1 is a flow diagram for determining the QoS requirements for an aggregate of NRT-VBR connections
  • FIG. 12 is a flow diagram for determining the QoS requirements for an aggregate of ABR connections
  • FIG. 15A is a block diagram showing aggregation of CBR and CBR-like connections
  • FIG. 15B is a block diagram showing aggregation of CBR-like
  • FIG. 15C is a block diagram showing aggregation of "bursty" RT-VBR connections
  • FIG. 15E is a block diagram showing aggregation of ABR connections.
  • FIG. 15F is a block diagram showing aggregation of UBR connections.
  • FIG. 2 An exemplary embodiment of an ATM communications system 200 for aggregating VCs into VPs according to the end points of the VCs is shown in FIG. 2.
  • the ATM network 140 supports six VCs by way of three VCSs.
  • VCs having the same end points are aggregated into VPs.
  • virtual channels VC and VC 12 are aggregated into virtual path VP 1 ( virtual channels VC 21 and VC 22 are aggregated into virtual path VP 2 , and virtual channels VC 31 and VC 32 are aggregated into virtual path VP 3 .
  • aggregating VCs into VPs according to end points can be useful for traffic control and resource management in the ATM network.
  • FIG. 1 An exemplary embodiment of an ATM communications system 200 for aggregating VCs into VPs according to the end points.
  • FIGS. 4 - 7 show a number of exemplary embodiments of a VCS 410 for aggregating VCs into VPs.
  • VCS 410 supports six VCs 420, through 420 6 , collectively referred to as VCs 420.
  • VCs 420 are CBR connections and four VCs (420 3 - 420 6 ) are RT-VBR connections.
  • the VBR connections 420 3 - 420 6 are distinguished by their specific ATM Traffic Descriptors and QoS Parameters.
  • VBR connection 420 3 has PCR equal to 100, SCR equal to 75, and CDV equal to 10 microseconds
  • VBR connection 420 4 has PCR equal to 100, SCR equal to 50, and CDV equal to 20 microseconds
  • VBR connection 420 5 has PCR equal to 100, SCR equal to 25, and CDV equal to 20 milliseconds
  • VBR connection 420 6 has PCR equal to 100, SCR equal to 10, and CDV equal to 15 milliseconds.
  • FIG. 4 shows an exemplary embodiment of VCS 405 as is known in the prior art.
  • the six VCs 420 are aggregated into a single VP 430.
  • VP 430 must be allocated bandwidth to cover the worst-case traffic requirements of the VCs 420, which have widely varying QoS requirements.
  • VP 430 will be extremely inefficient and difficult to manage.
  • VCs are aggregated according to their ATM Service Categories.
  • FIG. 5 shows an exemplary embodiment of VCS 505 in which the six VCs 420 are aggregated according to their ATM Service Categories.
  • the two CBR connections 420, and 420 2 are aggregated into a first VP 510, and the four VBR connections 420 3 - 420 6 are aggregated into a second VP 520.
  • VP 510 can be optimized for CBR connections
  • VP 520 can be optimized for VBR connections.
  • VCs are aggregated at a finer level according to their ATM Traffic
  • FIG. 6 shows an exemplary embodiment of VCS 605 in which the six VCs 420 are aggregated by ATM Service Category at one level, and by ATM Traffic Descriptors and QoS Parameters at another level.
  • the two CBR connections 420, and 420 2 are again aggregated into VP 510.
  • the four VBR connections 420 3 - 420 6 are aggregated into two VPs 610 and 620 by bundling VBR VCs having similar QoS Parameters, in this case the Cell Delay Variation (CDV).
  • CDV Cell Delay Variation
  • the two VBR VCs having microsecond-level CDV requirements (VCs 420 3 and 420 4 ) are aggregated together into VP 610, and the two VBR VCs having millisecond-level CDV requirements (VCs 420 5 and 420 6 ) are aggregated together into VP 620.
  • VP 610 can be optimized for providing CDV in the microsecond range
  • VP 620 can be optimized for providing CDV in the millisecond range.
  • VBR connections are aggregated together with CBR connections.
  • CBR-like connections can be treated like CBR connections with little loss of efficiency.
  • FIG. 7 shows an exemplary embodiment of VCS 705 in which a VBR connection is aggregated with CBR connections.
  • the two CBR connections 420, and 420 2 are aggregated together with VBR connection 420 3 , which has a ratio of SCR to PCR greater than 0.5, to form VP 710.
  • the remaining VBR connections 420 4 - 420 6 all of which have a ratio of SCR to PCR less than or equal to 0.5, are aggregated into VP 720.
  • each VP is allocated sufficient network resources so as to allow the VP to meet the QoS requirements of its constituent VCs.
  • each VP has its own specific QoS requirements which are derived from the QoS requirements of its constituent VCs.
  • the QoS requirements for a VP are based on, but are generally not identical to, the QoS requirements of each of the constituent VCs individually.
  • the VP will typically be composed of VCs from the same ATM Service Category. Therefore, it is convenient to examine the translation of QoS requirements for per-service category aggregates. Note that, in the following discussion of QoS requirement translation, values specified as being the "lowest" of a group of values indicates a selection of the most stringent value from the group.
  • CBR connections are characterized by the transmission of a constant stream of bits at a fixed bit rate.
  • the ATM Traffic Descriptor for CBR connections is the Peak Cell Rate (PCR).
  • the QoS parameters for the CBR service category are the Maximum Cell Transfer Delay (MaxCTD), Cell Delay Variation (CDV), and Cell Loss Ratio (CLR).
  • the MaxCTD includes the access delay and propagation delay of the underlying communications network.
  • FIG. 8 is a flow diagram 800 for determining the QoS requirements for an aggregate of CBR and CBR-like connections.
  • the method begins in step 810, and proceeds to step 820, where the method sets the PCR for the VP equal to the sum of the PCRs of all constituent VCs.
  • the method then proceeds to step 830, where the method sets the MaxCTD for the VP equal to the MaxCTD of the constituent connection having the lowest MaxCTD.
  • the method then proceeds to step 840, where the method sets the CDV for the VP equal to the CDV of the constituent connection having the lowest CDV.
  • the method then proceeds to step 850, where the method sets the CLR for the VP equal to the CLR of the constituent connection having the lowest CLR.
  • the method terminates in step 899.
  • RT-VBR connections In a typical RT-VBR connection, the traffic over the connection will have periods where cells are generated in bursts at the PCR and periods of silence where no cells are generated (voice and real-time video are good examples of RT-VBR traffic).
  • the ratio of SCR to PCR As the SCR approaches the PCR, the connection acts more and more like a CBR connection. If the ratio of SCR to PCR exceeds a predetermined value, for example 0.5, then the connection is considered to be a CBR-like connection that can be treated like a CBR connection with little loss of bandwidth efficiency.
  • a number of CBR-like connections are aggregated into an aggregate connection.
  • the connection is considered to be a "bursty" connection.
  • a number of "bursty" connections are aggregated into an aggregate connection.
  • FIG. 9 is a flow diagram 900 for determining the QoS requirements for an aggregate of CBR-like RT-VBR connections.
  • step 1040 the method sets the PCR for the VP equal to a weighted sum of the PCRs of all constituent VCs.
  • step 1050 the method sets the MaxCTD for the VP equal to the MaxCTD of the constituent connection having the lowest MaxCTD.
  • step 1060 the method sets the CDV for the VP equal to the CDV of the constituent connection having the lowest CDV.
  • step 1070 the method sets the CLR for the VP equal to the CLR of the constituent connection having the lowest CLR. Finally, the method terminates in step 1099.
  • NRT-VBR connections are similar to RT-VBR connections, except that real-time delivery of cells is not required.
  • An efficient way to handle NRT-VBR connections is to provide sufficient bandwidth to meet the SCR requirements, while buffering bursts received at the PCR until they can be serviced at the SCR.
  • ABR connections are characterized by traffic requiring a minimum cell rate, but willing to accept additional bandwidth if and when such additional bandwidth becomes available.
  • the ATM Traffic Descriptors for ABR connections are the Minimum Cell Rate (MCR) and Peak Cell Rate (PCR), where MCR is the minimum guaranteed cell rate required by the connection and PCR is the maximum cell rate at which the connection can transmit if allowed by the network. Consequently, the transmission rate of the ABR connection lies somewhere between the MCR and the PCR. No QoS Parameters are defined for the ABR service category. In one embodiment, a number of ABR connections are aggregated into an aggregate ABR connection.
  • a number of UBR connections are aggregated into an aggregate UBR connection.
  • the PCR for the aggregate (PCR agg ) is set equal to the sum of the PCRs of all constituent connections, but not exceeding the available channel bandwidth supporting the VP.
  • the apparatus 1410 also includes ATM Interface Logic 1460 for interfacing VCs and VPs with an ATM network 1470.
  • ATM Interface Logic 1460 accesses VPs formed by Aggregating Logic 1440 and obtains a set of QoS requirements for each VP from QoS Logic 1450.
  • QoS Logic 1450 implements the methodology as depicted and described in flow diagram 800 to determine the set of QoS requirements for the VP.
  • An exemplary embodiment is shown in FIG. 15A. In this example, two CBR (or CBR-like) VCs 1510 and 1511 are aggregated into a VP 1512 having the CBR service category.
  • the PCR for VP 1522 is set equal to 300.
  • the SCR for VP 1522 is set equal to the sum of the SCRs of VCs 1520 and 1521.
  • the SCR for VP 1522 is set equal to 210.
  • the MBS for VP 1522 is set equal to the sum of the MBSs of VCs 1520 and 1521.
  • the MBS for VP 1522 is set equal to 30.
  • the MaxCTD for VP 1522 is set equal to the MaxCTD of the constituent connection having the lowest MaxCTD.
  • the MaxCTD for VP 1522 is set equal to the MaxCTD of VC 1521 which equals 40.
  • the CDV for VP 1522 is set equal to the CDV of the constituent connection having the lowest CDV.
  • the CDV for VP 1522 is set equal to the CDV of VC 1520 which equals 10.
  • the CLR for VP 1522 is set equal to the CLR of the constituent connection having the lowest CLR.
  • the CLR for VP 1522 is set equal to the CLR of VC 1520 which equals 20.
  • QoS Logic 1450 implements the methodology as depicted and described in flow diagram 1000 to determine the set of QoS requirements for the VP.
  • An exemplary embodiment is shown in FIG. 15C.
  • two "bursty" RT-VBR VCs 1530 and 1531 are aggregated into a VP 1532 having the RT-VBR service category.
  • QoS Logic 1450 translates the QoS requirements of VCs 1530 and 1531 into QoS requirements for VP 1532.
  • the resulting QoS requirements for the VP are as follows.
  • the PCR for VP 1532 is set equal to a weighted sum of the PCRs of VCs 1530 and 1531. Thus, using a weighting factor of 0.5, the PCR for VP 1532 is set equal to 150.
  • the SCR for VP 1532 is set equal to the sum of the SCRs of VCs 1530 and 1531. Thus, the SCR for VP 1532 is set equal to 120.
  • the MBS for VP 1532 is set equal to the sum of the MBSs of VCs 1530 and 1531.
  • QoS Logic 1450 translates the QoS requirements of VCs 1540 and 1541 into QoS requirements for VP 1542.
  • the resulting QoS requirements for the VP are as follows.
  • the SCR for VP 1542 is set equal to the sum of the SCRs of VCs 1540 and 1541.
  • the SCR for VP 1542 is set equal to 120.
  • the MBS for VP 1542 is set equal to the sum of the MBSs of VCs 1540 and 1541.
  • the MBS for VP 1542 is set equal to 30.
  • the PCR for VP 1542 is set equal to the larger of the SCR for the VP and the PCR of the constituent connection having the highest PCR.
  • the PCR for VP 1542 is set equal to the PCR of VC 1541 which equals 200.
  • the CLR for VP 1542 is set equal to the CLR of the constituent connection having the lowest CLR.
  • the CLR for VP 1542 is set equal to the CLR of VC 1540 which equals 20.
  • QoS Logic 1450 implements the methodology as depicted and described in flow diagram 1200 to determine the set of QoS requirements for the VP.
  • An exemplary embodiment is shown in FIG. 15E. In this example, two ABR VCs 1550 and 1551 are aggregated into a VP 1552 having the ABR service category.
  • VC 1550 has a MCR of 40 and a PCR of 100
  • VC 1551 has a MCR of 80 and a PCR of 200
  • QoS Logic 1450 translates the QoS requirements of VCs 1550 and 1551 into QoS requirements for VP 1552.
  • the resulting QoS requirements for the VP are as follows.
  • the MCR for VP 1552 is set equal to the sum of the MCRs of VCs 1550 and 1551.
  • the MCR for VP 1552 is set equal to 120.
  • the PCR for VP 1552 is set equal to the lesser of the available channel bandwidth and the sum of the PCRs of all constituent VCs.
  • the PCR for VP 1552 is set equal to 300, assuming that the available channel bandwidth is sufficient to support a PCR of 300.
  • Patent Application entitled System, Device, and Method for Aggregating Users in a Shared-Medium Network referred to and incorporated by reference above, to also realize improved scaleability and efficiency of the MAC protocol.
  • a VP may be treated as a single MAC User, such that the VP is an Aggregate MAC User (AMU) in and of itself.
  • AMU Aggregate MAC User
  • VC aggregation and MAC User aggregation are applied differently and for different purposes, and it is possible that an aggregate that improves efficiency of the ATM bandwidth utilization may actually reduce the scalability and efficiency of the MAC protocol, and vice versa.
  • the applicability of each type of aggregation must be determined by the objectives of the system.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un appareil (1410) et un procédé (300) pour agréger les canaux virtuels (1420) d'un réseau fonctionnant en mode de transfert asynchrone (MTA) pour améliorer l'efficacité d'exploitation de la bande utilisée dans le réseau MTA (1470). Des canaux virtuels (1240) sont agrégés en trajets virtuels (1430) en fonction de la catégorie du service MTA et, également, en fonction de descripteurs du trafic MTA (1440) et des paramètres QoS (1450). Un ensemble de paramètres QoS (1450) appropriés au trajet virtuel est déterminé en fonction des besoins en QoS des canaux virtuels constitutifs (1460).
PCT/US1997/020107 1996-12-16 1997-11-06 APPAREIL ET PROCEDE DE TRAITEMENT DE PARAMETRES 'QUALITE DE SERVICE' (QoS) EN VUE D'UNE AGREGATION PAR CATEGORIE DE SERVICE WO1998027692A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97946518A EP0947075A4 (fr) 1996-12-16 1997-11-06 APPAREIL ET PROCEDE DE TRAITEMENT DE PARAMETRES "QUALITE DE SERVICE" (QoS) EN VUE D'UNE AGREGATION PAR CATEGORIE DE SERVICE
AU51674/98A AU5167498A (en) 1996-12-16 1997-11-06 Apparatus and method for translating qos parameters for per-service category aggregation
CA002274844A CA2274844A1 (fr) 1996-12-16 1997-11-06 Appareil et procede de traitement de parametres "qualite de service" (qos) en vue d'une agregation par categorie de service

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76608096A 1996-12-16 1996-12-16
US08/766,080 1996-12-16

Publications (1)

Publication Number Publication Date
WO1998027692A1 true WO1998027692A1 (fr) 1998-06-25

Family

ID=25075350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/020107 WO1998027692A1 (fr) 1996-12-16 1997-11-06 APPAREIL ET PROCEDE DE TRAITEMENT DE PARAMETRES 'QUALITE DE SERVICE' (QoS) EN VUE D'UNE AGREGATION PAR CATEGORIE DE SERVICE

Country Status (5)

Country Link
EP (1) EP0947075A4 (fr)
CN (1) CN1114298C (fr)
AU (1) AU5167498A (fr)
CA (1) CA2274844A1 (fr)
WO (1) WO1998027692A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002098165A1 (fr) * 2001-06-01 2002-12-05 Telefonaktiebolaget L M Ericsson (Publ) Separation de la qualite de service a efficacite de largeur de bande d'un trafic de couche d'adaptation mta 2
WO2004039018A1 (fr) * 2002-10-28 2004-05-06 Telefonaktiebolaget Lm Ericsson (Publ) Concentrateur pour trafic utilisateur aal2 achemine sur canal virtuel a debit binaire non specifie
US7099814B2 (en) 2002-03-29 2006-08-29 International Business Machines Corportion I/O velocity projection for bridge attached channel
EP1458149A3 (fr) * 2002-11-27 2011-01-05 Alcatel Canada Inc. Système et procédé pour ordonnancer des flux de données pour un dispositif de communication
US8849297B2 (en) 2006-07-14 2014-09-30 Qualcomm Incorporated Call establishment and maintenance in a wireless network

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI382713B (zh) * 2005-01-21 2013-01-11 Koninkl Philips Electronics Nv 差異式服務無線網路中測量與監視服務品質
JP4993202B2 (ja) * 2007-12-10 2012-08-08 横河電機株式会社 フィールドネットワークシステム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5461611A (en) * 1994-06-07 1995-10-24 International Business Machines Corporation Quality of service management for source routing multimedia packet networks
US5499238A (en) * 1993-11-06 1996-03-12 Electronics And Telecommunications Research Institute Asynchronous transfer mode (ATM) multiplexing process device and method of the broadband integrated service digital network subscriber access apparatus
US5519707A (en) * 1992-10-13 1996-05-21 Synoptics Communications, Inc. Multiplexing of communications services on a virtual service path in an ATM network or the like
US5572523A (en) * 1990-10-16 1996-11-05 Kabushiki Kaisha Toshiba Method of controlling communication network incorporating virtual channels exchange nodes and virtual paths exchange nodes
US5579312A (en) * 1994-06-28 1996-11-26 Hewlett-Packard Company Method and apparatus for scheduling the transmission of cells of guaranteed-bandwidth virtual channels

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5572523A (en) * 1990-10-16 1996-11-05 Kabushiki Kaisha Toshiba Method of controlling communication network incorporating virtual channels exchange nodes and virtual paths exchange nodes
US5519707A (en) * 1992-10-13 1996-05-21 Synoptics Communications, Inc. Multiplexing of communications services on a virtual service path in an ATM network or the like
US5499238A (en) * 1993-11-06 1996-03-12 Electronics And Telecommunications Research Institute Asynchronous transfer mode (ATM) multiplexing process device and method of the broadband integrated service digital network subscriber access apparatus
US5461611A (en) * 1994-06-07 1995-10-24 International Business Machines Corporation Quality of service management for source routing multimedia packet networks
US5579312A (en) * 1994-06-28 1996-11-26 Hewlett-Packard Company Method and apparatus for scheduling the transmission of cells of guaranteed-bandwidth virtual channels

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0947075A4 *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002098165A1 (fr) * 2001-06-01 2002-12-05 Telefonaktiebolaget L M Ericsson (Publ) Separation de la qualite de service a efficacite de largeur de bande d'un trafic de couche d'adaptation mta 2
US7230948B2 (en) 2001-06-01 2007-06-12 Telefonaktiebolaget Lm Ericsson (Publ) Bandwidth efficient Quality of Service separation of AAL2 traffic
US7099814B2 (en) 2002-03-29 2006-08-29 International Business Machines Corportion I/O velocity projection for bridge attached channel
WO2004039018A1 (fr) * 2002-10-28 2004-05-06 Telefonaktiebolaget Lm Ericsson (Publ) Concentrateur pour trafic utilisateur aal2 achemine sur canal virtuel a debit binaire non specifie
US7283535B2 (en) 2002-10-28 2007-10-16 Telefonaktiebolaget Lm Ericsson (Publ) Concentrator for user AAL2 traffic carried on UBR virtual channels
EP1458149A3 (fr) * 2002-11-27 2011-01-05 Alcatel Canada Inc. Système et procédé pour ordonnancer des flux de données pour un dispositif de communication
US8849297B2 (en) 2006-07-14 2014-09-30 Qualcomm Incorporated Call establishment and maintenance in a wireless network
US9781014B2 (en) 2006-07-14 2017-10-03 Qualcomm Incorporated Call establishment and maintenance in a wireless network
US10447557B2 (en) 2006-07-14 2019-10-15 Qualcomm Incorporated Call establishment and maintenance in a wireless network

Also Published As

Publication number Publication date
AU5167498A (en) 1998-07-15
EP0947075A4 (fr) 2005-09-28
CA2274844A1 (fr) 1998-06-25
EP0947075A1 (fr) 1999-10-06
CN1240081A (zh) 1999-12-29
CN1114298C (zh) 2003-07-09

Similar Documents

Publication Publication Date Title
Newman Traffic management for ATM local area networks
US6687228B1 (en) Method and system in a packet switching network for dynamically sharing the bandwidth of a virtual path connection among different types of connections
CA2118471C (fr) Cadre de controle du trafic utilisant les parametres d'utilisation pour reseaux mta
Newman ATM local area networks
US6690678B1 (en) Method and system in a packet switching network for dynamically adjusting the bandwidth of a continuous bit rate virtual path connection according to the network load
US6058114A (en) Unified network cell scheduler and flow controller
US5870384A (en) Method and equipment for prioritizing traffic in an ATM network
US6594265B1 (en) Method and system in an asynchronous transfer mode (ATM) network for providing an available bit rate interface to a continuous bit rate virtual path connection with adjustable bandwidth
US6411617B1 (en) System and method for managing data traffic associated with various quality of service principles using a conventional network node switch
US6643293B1 (en) Virtual connection shaping with hierarchial arbitration
WO1998027692A1 (fr) APPAREIL ET PROCEDE DE TRAITEMENT DE PARAMETRES 'QUALITE DE SERVICE' (QoS) EN VUE D'UNE AGREGATION PAR CATEGORIE DE SERVICE
Yamanaka et al. Usage parameter control and bandwidth allocation methods considering cell delay variation in ATM networks
Rosenberg et al. Functionality at the edge: Designing scalable multiservice ATM networks
WO1998037730A1 (fr) Reservation de ressources dans des reseaux mta
Cisco Configuring Resource Management
Cisco Traffic and Resource Management
Cisco Traffic and Resource Management
Cisco Configuring Resource Management
Hou et al. Overview of implementing ATM based enterprise local area network for desktop multimedia computing
Cisco ATM Commands for the LightStream1010 ATM Switch
Cisco Configuring Resource Management
Cisco Configuring Resource Management
Ramamurthy et al. An UPC-based traffic control framework for ATM networks
Duangkreu et al. Frame relay to ATM PVC network interworking management
Sezer et al. Analysis of ATM switch design for achieving predictable quality of service

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 97180419.2

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZW AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH KE LS MW SD SZ UG ZW AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1997946518

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2274844

Country of ref document: CA

Ref document number: 2274844

Country of ref document: CA

Kind code of ref document: A

WWP Wipo information: published in national office

Ref document number: 1997946518

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWW Wipo information: withdrawn in national office

Ref document number: 1997946518

Country of ref document: EP

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载