WO1998037730A1 - Reservation de ressources dans des reseaux mta - Google Patents

Reservation de ressources dans des reseaux mta Download PDF

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Publication number
WO1998037730A1
WO1998037730A1 PCT/SE1998/000296 SE9800296W WO9837730A1 WO 1998037730 A1 WO1998037730 A1 WO 1998037730A1 SE 9800296 W SE9800296 W SE 9800296W WO 9837730 A1 WO9837730 A1 WO 9837730A1
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WO
WIPO (PCT)
Prior art keywords
node
resource reservation
rsvp
network
service
Prior art date
Application number
PCT/SE1998/000296
Other languages
English (en)
Inventor
Michela Falchi
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to AU61280/98A priority Critical patent/AU6128098A/en
Publication of WO1998037730A1 publication Critical patent/WO1998037730A1/fr

Links

Classifications

    • 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
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/15—Flow control; Congestion control in relation to multipoint traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/72—Admission control; Resource allocation using reservation actions during connection setup
    • H04L47/724—Admission control; Resource allocation using reservation actions during connection setup at intermediate nodes, e.g. resource reservation protocol [RSVP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/801—Real time traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • 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
    • 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
    • H04L2012/5629—Admission control
    • H04L2012/5631—Resource management and allocation
    • 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
    • H04L2012/5665—Interaction of ATM with other protocols
    • H04L2012/5667—IP over ATM

Definitions

  • the present invention relates to ATM switches and in particular to the use of such switches for data communication.
  • ATM will be particularly useful for transntitting real-time data and multimedia applications, which are currently being used to an increasing extent in the Internet and in other networks. This requires the use of Constant Bit Rate (CBR) or real time Variable Bit Rate (rt-VBR) traffic in the network.
  • CBR Constant Bit Rate
  • rt-VBR real time Variable Bit Rate
  • RSVP Resource Reservation Protocol
  • the Internet network currently used offers a simple service model based on best- effort service. The requests are handled on a first-come first-serve basis, as fast as the capacity in the network will allow. This works well for applications that are not time-critical, such as e-mail, retrieval of files or accessing the world wide web. In recent years, new applications have been developed, in particular real-time applications such as remote video and multimedia. If the Internet is to provide the sufficient quality of service for these applications, the service model must be able to reserve resources along the whole connection. To meet these new demands, among other things, the Resource Reservation Protocol (RSVP) is designed to support predictive service while still allowing the existing best effort service.
  • RSVP Resource Reservation Protocol
  • a flow is defined as a sequence of packets sent from a particular source to one or more destinations. The flow is conveyed through a particular path with specific demands on the quality of service.
  • the specification of a flow is made when the source declares the traffic characteristics of the flow it wishes to generate and the network can define the quality of service to be assigned to that flow.
  • Resource reservation The network must be able to reserve and maintain the resources reserved on each link along the path.
  • the resources in question are the ones where several flows can compete: the bandwidth of the link, and the occupancy of buffers.
  • Admission control In order to maintain the requested quality of service for flows already active, the network must be able to deny new reservation requests that can affect the performance of already operating flows.
  • Packet scheduling Within each host or router in the network there must be a scheduler to decide which packet is to be transmitted first. The decision is related to the quality of service of the flow to which the packet belongs.
  • RSVP informs each router along the communication path about the request.
  • the RSVP reservation request originates at the receiving end but the actual quality of service control takes place at the sender's end.
  • the reservation requests are passed on in the reverse flow direction, from the receiver to the sender.
  • a decision is made about reservation of resources.
  • the request is passed to the admission control. If the reservation is not allowed an error message is sent to the receiver or receivers.
  • the desired quality of service parameters are set in the packet scheduler and the packet classifier parameters are set according to the filter specifications received.
  • the reservation request is forwarded upstream to the sender from which data is to be received.
  • RSVP introduces the connection-oriented approach in the Internet architecture, i.e. reserving and allocating resources for a particular flow. The traffic characteristics of a flow may depend on the type of application associated with the flow.
  • routers In order to fulfil the RSVP requests routers must provide more advanced scheduling mechanisms than just to serve the first arriving packet first.
  • the implementation of queues and fair transmission of packets from all flows in a conventional router is difficult because LP packages are long and have variable length.
  • ATM is the only switching technology that has been developed to support switching of different traffic types using the same resources and guaranteeing a certain quality of service.
  • the new generation of ATM switches has reached the optimal level of isolation among connections with different traffic characteristics sharing the same resources, thus ensuring that each virtual connection gets the bandwidth it should have.
  • CTD Cell Transfer Delay
  • CDV Cell Delay Variation
  • CLR Cell Loss Rate
  • the ATM Forum has defined the following five service categories with different requirements on the quality of service parameters.
  • Constant Bit Rate Supports real-time transmission of for example voice and video.
  • the ATM network is configured to provide a constant bandwidth, which is available for the whole duration of the connection.
  • Real Time - Variable Bit Rate rt-VBR : Suitable for voice and video. Supports statistical multiplexing for real time sources.
  • Non-real Time Variable Bit Rate (nrt-VBR : Suitable for non-real time applications.
  • ABR Available Bit Rate
  • Unspecified Bit Rate (UBR): Suitable for low-priority non-real time applications.
  • the crucial task of an ATM switch is to ensure that the specified quality of service is achieved. To ensure this, the new generation of ATM switches is provided with enhanced buffer scheduling mechanisms, to guarantee that each virtual connection is given the bandwidth it should have.
  • the Internet Engineering Task Force (IETF) is an assosiation of companies working with telecommunications and data communication, to develop solutions for the Internet.
  • the IETF is currently working to give an overall approach for interoperating of RSVP protocol and ATM User Network Interface (UNI) signalling.
  • the starting point is the classical IP network using ATM switches where hosts are connected to ATM networks, or IP subnets, and the communication between separate LP subnets is achieved with routers.
  • ATM signalling is source oriented whereas RSVP is receiver oriented.
  • the source is responsible for the establishment of the point-to-point or point-to-multipoint virtual connections.
  • this is achieved by discarding one protocol stack, the ATM control plane and to use the EP stack together with the RSVP control protocol to control the ATM switch.
  • the main advantage of the invention is that it allows for more efficient use of ATM resources in an internet type network.
  • Figure 1 is a schematic view of a data communications network involving ATM switches according to prior art
  • Figure 2 shows the interaction of a host and a router using the Resource Reservation Protocol
  • FIG. 3 shows an ATM switch equipped with an RSVP unit according to the invention.
  • Figure 4 shows a connection between two hosts, including ATM switches according to the invention.
  • Figure 1 shows an example of a data communications network according to prior art.
  • the network comprises a first 1 and a second 3 local network, both comprising ATM switches and connected to each other via a router 5.
  • a first host 7 is connected to the first local network, and a second host 9 is connected to the second local network 3.
  • the router 5 and d e hosts 7, 9 comprise RSVP means, but these are unable to control the ATM networks directly. Data is passed from the first host 7, through the first ATM network 1 to the router 5, which transmits the data to the second ATM network 3, through which the data is transmitted to the second host 9.
  • the router 5 and the hosts 7, 9 do not see the architecture of the ATM networks and are unable to make decisions about how the ATM network resources should be used.
  • FIG. 2 shows how a host 21 and a router 23 cooperate, in a known manner, to reserve and allocate resources for a specific connection.
  • the host 21 contains an RSVP means 25, which co-operates with the apphcation 27 hardware and software from which the data to be transmitted originates.
  • the application 27 and the RSVP means 25 are also connected to the packet classification means 29, which determines the route of the packet.
  • the packet classification means 29 forwards the packets received from the application 27 to the packet scheduler 31.
  • the RSVP means 25 is also connected to the police control means 33 and to the admission control means 35.
  • the admission control means 35 decides if a new resource reservation request is to be granted or not. This is necessary to guarantee the specified quality of service to the connections already set up.
  • the police control means 33 supervises the traffic to enforce the compliance of all connections to the agreed quality of service.
  • the RSVP means 25 is connected to a similar RSVP means 37 resident in the router 23.
  • the RSVP means 37 is connected to a packet classification means 39 and a packet scheduling means 41 similar to the ones 29, 31 found in the host 21.
  • the RSVP means 37 is also connected to a router process means 43, a police control means 45 and an admission control means 47 similar to the ones found in the host.
  • FIG. 3 shows an ATM switch 61 according to the invention.
  • the switch 61 comprises an RSVP means 63, similar to the RSVP means 25, 37 in the host 21 and the router 23 of figure 2.
  • the RSVP means 63 receives resource reservation requests from the RSVP means of other ATM switches, routers or hosts to which it is connected via at least one connection 65, 67.
  • the RSVP means 63 is connected to a router process means 69 and to a police control means 71.
  • the RSVP means 63 is also connected, via a VC management means 73, to the ATM switch core 75 and to a packet scheduling means 77.
  • the RSVP means 63 is also connected to the packet scheduling means 77 via a Connection Admission Control (CAC) means 79.
  • the CAC means 79 controls the actions taken by the network at the set-up phase of a connection in order to accept or reject an ATM connection.
  • CAC Connection Admission Control
  • the RSVP means is connected to the CAC means 77, and instead of the packet classification means and the packet scheduler, the RSVP means is connected to the VC management means 73. Because of this, the RSVP means to be used in an ATM switch must be adapted with new interfaces to the units that are unique for the ATM switch.
  • FIG. 4 shows an example of a connection in a data communications network according to the invention.
  • the network architecture in this figure is only an example. Any combination and any number of ATM switches, routers and hosts is possible.
  • the network comprises a first 91 and a second 93 ATM switch, each comprising an RSVP means 95 and 97 respectively.
  • Both ATM switches 91, 93 are connected to a router 99, also comprising an RSVP means 101.
  • the RSVP means 95, 97 of both ATM switches 91, 93 are connected to the RSVP means 101 of the router 99.
  • a first host 103 also comprising an RSVP means 105 is connected to the first ATM switch 91.
  • the RSVP means 105 of the first host 103 is connected to the RSVP means of the first ATM switch.
  • a second host 107, also comprising an RSVP means 109, is connected to the second ATM switch 93.
  • the RSVP means 109 of the second host 107 is connected to the RSVP means 97 of the second ATM switch.
  • the router has ATM ports 111, 113 and the first 103 and second 107 host have similar ATM ports 115 and 117 respectively, for receiving and transmitting ATM cells.
  • the RSVP means 105 of this host sends a request for resources to the RSVP means 97 of the ATM switch 93 to which it is connected.
  • This RSVP means 97 uses information from the connection admission control means of this switch 93 to grant or deny the requested resources. If the resources are granted, the request for resources is forwarded to the RSVP means 101 of the router 99, which handles the request and determines whether or not the resources may be granted. If so, the request is forwarded to the RSVP means 95 of the first ATM switch 91.
  • the RSVP means 95 in its turn determines whether or not the requested resources can be granted in the first ATM switch 91 and, if this is the case, forwards the request to the RSVP means 105 of the first host 103. If the requested resources are granted for all links in the connection, the connection is set up. If the requested resources cannot be granted for all links, an error message is sent to the second host 107, from which the request for resources originated.

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

Abstract

L'invention concerne un procédé et un appareil autorisant l'utilisation de commutateurs ATM dans des réseaux de type Internet sans nécessiter de conversion de protocole. Selon l'invention, les commutateurs ATM utilisés dans de tels réseaux comportent des protocoles (63) de réservation de ressources (RSVP) similaires à ceux utilisés dans les routeurs hôtes et routeurs conventionnels. Lorsqu'une demande de ressources est faite, le protocole RSVP communique avec les dispositifs (69, 71, 73, 79) de gestion d'admission et de gestion des liaisons pour déterminer si les ressources demandées peuvent être réservées. Les protocoles RSVP de tous les noeuds d'un réseau communiquent entre eux pour réserver des ressources afin de garantir un niveau de service spécifique pour chaque communication.
PCT/SE1998/000296 1997-02-20 1998-02-19 Reservation de ressources dans des reseaux mta WO1998037730A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU61280/98A AU6128098A (en) 1997-02-20 1998-02-19 Resource reservation in atm networks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9700599-5 1997-02-20
SE9700599A SE9700599L (sv) 1997-02-20 1997-02-20 Förfarande och anordning i ett ATM-nät

Publications (1)

Publication Number Publication Date
WO1998037730A1 true WO1998037730A1 (fr) 1998-08-27

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WO (1) WO1998037730A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000031929A2 (fr) 1998-11-25 2000-06-02 Enron Warpspeed Services,Inc. Procede et appareil destine a fournir une qualite/une classe de services (qos/cos) garanties a l'interieur de reseaux et entre reseaux et utilisant des protocoles de reservation et des formats de trames existants
WO2000077980A2 (fr) * 1999-06-10 2000-12-21 Nortel Networks Corporation Dispositif de commutation et methode permettant de reguler le trafic dans un reseau
WO2001065782A1 (fr) * 2000-02-28 2001-09-07 Telia Ab Procede d'etablissement de trajets de transmission de donnees de bout en bout, au moyen du protocole de signalisation de reservation de ressources point par point, base protocole icmp
WO2002009449A1 (fr) * 2000-07-26 2002-01-31 Eci Telecom Ltd Unite de commande de noyau de commutation pour equipement de sous-repartition numerique, et modes de fonctionnement du noyau de commutation
FR2816789A1 (fr) * 2000-11-10 2002-05-17 France Telecom Systeme de telecommunications avec controleur d'appels, utilisant un coupleur de gestion de reseau
WO2007022789A1 (fr) * 2005-08-23 2007-03-01 Telefonaktiebolaget Lm Ericsson (Publ) Reservation de ressources cumulee pour des flux de donnees
US9432303B2 (en) 2008-01-22 2016-08-30 Thomson Licensing Method for aiding the reservation of resources for a packet switched network, and associated management device and aid device

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US5519689A (en) * 1993-06-12 1996-05-21 Samsung Electronics Co., Ltd. Traffic control apparatus and method of user-network interface of asynchronous transfer mode
EP0790751A2 (fr) * 1996-02-16 1997-08-20 Lucent Technologies Inc. Gestion de circuits virtuels "ATM" avec protocole de réservation de ressources

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US5519689A (en) * 1993-06-12 1996-05-21 Samsung Electronics Co., Ltd. Traffic control apparatus and method of user-network interface of asynchronous transfer mode
EP0790751A2 (fr) * 1996-02-16 1997-08-20 Lucent Technologies Inc. Gestion de circuits virtuels "ATM" avec protocole de réservation de ressources

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Title
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HIROSHI ESAKI, "High Speed Datagram Delivery over Internet Using ATM Technology", IEIC TRANS. COMMUN., Volume E78-B, No. 8, August 1995. *
KOOHONG KANG et al., "A CAC Scheme for Heterogeneous Traffic in ATM Networks to Support Multiple QoS Requirements", GLOBECOM, Volume 1, 1995, pages 422-423. *
LIXIA ZHANG et al., "RSVP: A New Resource ReSerVation Protocol", IEEE NETWORK, Sept. 1993. *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE43566E1 (en) 1998-11-25 2012-08-07 Corps Of Discovery Patent Holding Llc Method and apparatus for providing guaranteed quality/class of service within and across networks using existing reservation protocols and frame formats
US6563793B1 (en) 1998-11-25 2003-05-13 Enron Warpspeed Services, Inc. Method and apparatus for providing guaranteed quality/class of service within and across networks using existing reservation protocols and frame formats
WO2000031929A3 (fr) * 1998-11-25 2000-11-23 Warpspeed Comm Procede et appareil destine a fournir une qualite/une classe de services (qos/cos) garanties a l'interieur de reseaux et entre reseaux et utilisant des protocoles de reservation et des formats de trames existants
WO2000031929A2 (fr) 1998-11-25 2000-06-02 Enron Warpspeed Services,Inc. Procede et appareil destine a fournir une qualite/une classe de services (qos/cos) garanties a l'interieur de reseaux et entre reseaux et utilisant des protocoles de reservation et des formats de trames existants
AU754325B2 (en) * 1998-11-25 2002-11-14 Corps Of Discovery Patent Holding Llc Method and apparatus for providing guaranteed quality/class of service within and across networks using existing reservation protocols and frame formats
WO2000077980A3 (fr) * 1999-06-10 2001-08-02 Nortel Networks Corp Dispositif de commutation et methode permettant de reguler le trafic dans un reseau
US6704280B1 (en) 1999-06-10 2004-03-09 Nortel Networks Limited Switching device and method for traffic policing over a network
WO2000077980A2 (fr) * 1999-06-10 2000-12-21 Nortel Networks Corporation Dispositif de commutation et methode permettant de reguler le trafic dans un reseau
WO2001065782A1 (fr) * 2000-02-28 2001-09-07 Telia Ab Procede d'etablissement de trajets de transmission de donnees de bout en bout, au moyen du protocole de signalisation de reservation de ressources point par point, base protocole icmp
WO2002009449A1 (fr) * 2000-07-26 2002-01-31 Eci Telecom Ltd Unite de commande de noyau de commutation pour equipement de sous-repartition numerique, et modes de fonctionnement du noyau de commutation
FR2816789A1 (fr) * 2000-11-10 2002-05-17 France Telecom Systeme de telecommunications avec controleur d'appels, utilisant un coupleur de gestion de reseau
WO2007022789A1 (fr) * 2005-08-23 2007-03-01 Telefonaktiebolaget Lm Ericsson (Publ) Reservation de ressources cumulee pour des flux de donnees
CN101297524B (zh) * 2005-08-23 2011-01-26 艾利森电话股份有限公司 数据流的汇聚式资源预留
US8681624B2 (en) 2005-08-23 2014-03-25 Telefonaktiebolaget L M Ericsson (Publ) Aggregated resource reservation for data flows
US9094349B2 (en) 2005-08-23 2015-07-28 Telefonaktiebolaget L M Ericsson (Publ) Aggregated resource reservation for data flows
US9432303B2 (en) 2008-01-22 2016-08-30 Thomson Licensing Method for aiding the reservation of resources for a packet switched network, and associated management device and aid device
US9787601B2 (en) 2008-01-22 2017-10-10 Thomson Licensing Method for aiding the reservation of resources for a packet-switched network, and associated management device and aid device

Also Published As

Publication number Publication date
SE9700599L (sv) 1998-08-21
AU6128098A (en) 1998-09-09
SE9700599D0 (sv) 1997-02-20

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