WO2010006545A1 - Procédé de commande d’accès aux ressources de réseau à architecture de commutation d’étiquettes multiprotocole - Google Patents

Procédé de commande d’accès aux ressources de réseau à architecture de commutation d’étiquettes multiprotocole Download PDF

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Publication number
WO2010006545A1
WO2010006545A1 PCT/CN2009/072742 CN2009072742W WO2010006545A1 WO 2010006545 A1 WO2010006545 A1 WO 2010006545A1 CN 2009072742 W CN2009072742 W CN 2009072742W WO 2010006545 A1 WO2010006545 A1 WO 2010006545A1
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WIPO (PCT)
Prior art keywords
resource
request
message
gateway device
service flow
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PCT/CN2009/072742
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English (en)
Chinese (zh)
Inventor
宋军
孙默
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中兴通讯股份有限公司
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Publication of WO2010006545A1 publication Critical patent/WO2010006545A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to the field of communications, and in particular, to a method for network resource admission control of an MPLS (Multiprotocol Label Switching Architecture).
  • MPLS Multiprotocol Label Switching Architecture
  • NGN Network Generation Network
  • IP Packet Data Network
  • NGN Network Generation Network
  • IP packet technology
  • NGN can provide richer multimedia services, such as emerging services with real-time requirements (such as VoIP, video conferencing, multimedia distance learning, video on demand, etc.), which require communication networks to provide efficient end-to-end QoS (Quality of Service, Service quality) support;
  • QoS Quality of Service, Service quality
  • users have higher and higher requirements for network service quality. Therefore, how to provide end-to-end QoS will be one of the core issues of NGN.
  • RACF Resource and Admission Control Function
  • the main function of the RACF is based on the operational policy rules, based on the user's subscription QoS information and available resources within the network for resource admission control. It shields the application layer from the difference of the bearer layer, and maps the QoS attributes of the application layer to the bearer layer, so that the bearer layer transport entity can provide QoS guarantee for the media stream of the session under its guidance.
  • the PD-FE Policy Decision Function Entity
  • the PD-FE makes a preliminary QoS resource decision based on the network policy rule and the media stream session information and the transmission resource subscription information of the user, where the media stream session information is sent from the SCF through the Rs interface.
  • Control Function, the service control function entity the user's transmission resource subscription information is obtained from the NACF (Network Attachment Control Function) through the Ru interface; and then with the TRC-FE (Transport Resource Control Function Entity) Functional
  • the interaction is performed to confirm whether there are sufficient QoS resources, and finally a final decision is made to generate a QoS control policy (the policy content mainly includes: media stream description, QoS parameters, gating, etc.), and the policy is sent to the PE-FE.
  • Policy Execute Function Entity, policy execution function entity execution;
  • TRC-FE is mainly responsible for collecting and maintaining the topology and resource status information of the transport network. It monitors resources in the network and collects related information. It controls the use of resources based on information such as topology, connectivity, network and node resource availability.
  • the resource request implements admission control, and responds according to the specific resource status when the PD-FE requests the resource;
  • PE-FE mainly performs policy control (gating, bandwidth, traffic classification and labeling, traffic shaping, collecting and reporting resource usage information, etc.) under the guidance of PD-FE.
  • TRE-FE Transport Resource Execute Function Entity
  • TRC-FE Transmission Resource Execute Function Entity
  • the ITU's resource control for MPLS networks has both centralized and distributed solutions.
  • the draft standard for distributed solutions has just begun to be developed.
  • the current architecture diagram is shown in Figure 2.
  • the MPLS network consists of LER (Label Edge Router). And the LSR (Label Switched Router), which deploys gateway devices (such as SBC (Session Border Controller) or BG-FE (Border Gateway Functional Entity))
  • the border gateway device and LER have TRC-FE functionality.
  • the technical problem to be solved by the present invention is to propose a method for MPLS network resource admission control, which combines the explicit resource admission control process of the RACF functional entity to effectively control resources in the MPLS network.
  • the present invention provides a method for MPLS network resource admission control of a multi-protocol label switching architecture, including: After receiving the resource request submitted by the service control layer for the service flow, the policy decision function entity PD-FE sends a resource initialization request to the gateway device that needs to pass the service flow;
  • the gateway device performs resource availability check on the path that the service flow needs to pass through the resource reservation protocol RSVP message
  • the resource request is accepted, otherwise it is rejected.
  • the method includes the following steps:
  • the PD-FE receives a resource request submitted by the service control layer for the service flow, and sends a resource initialization request to the gateway device that the service flow needs to pass;
  • the gateway device sends an RSVP message to the peer gateway device according to the resource requested by the PD-FE, where the message is used for resource availability check;
  • the PD-FE sends a resource initialization request RIR message to both gateway devices at the edge of the network to initiate resource reservation processing.
  • the gateway device sends an RSR RIR message to the opposite gateway device to perform resource availability check according to the resource requested by the PD-FE, and the RIR message first arrives at the label edge router. LER.
  • the LER process receives the RIR message, and determines the number of resources to be requested in the corresponding traffic engineering TE tunnel according to the message; the LER forwards the RIR to the gateway devices at both ends respectively. Message, make a resource reservation request.
  • the network element passing the message carries out a resource availability check according to the following rules:
  • the gateway devices at both ends receive the returned resource initialization response RIP message in the RSVP RESV format, and the resource request will be accepted;
  • the gateway devices at both ends will receive the RIP message in the format of the returned resource reservation protocol error code RSVP Error Code;
  • C3 If the LER is a differentiated service traffic engineering DS-TE, and the corresponding TE does not have sufficient resources, then the bandwidth allocation between the TEs is adjusted. If the adjusted resources can satisfy the request, the gateway device will Received RIP message in RSVP RES V format, otherwise received RIP message in RS VP Error Code format.
  • the method may include the following steps:
  • the PD-FE receives a resource request submitted by the service control layer for the service flow, and sends a resource initialization request to the gateway device that the service flow needs to pass;
  • the gateway device determines, according to the maintained MPLS network resource status, whether the currently available resource satisfies the resource request;
  • the gateway device accepts the resource request, otherwise rejects.
  • the PD-FE sends an RIR message to both gateway devices at the edge of the network to initiate resource reservation processing.
  • the gateway devices at both ends accept the request and update the resource status; and the subsequent gateway device preferentially prioritizes the corresponding service flow.
  • the LER class maps the service flow to the corresponding TE tunnel according to the priority information.
  • the gateway device will receive the RSVP RESV message and update the maintained resource status information; if the bandwidth reservation is unsuccessful, then:
  • the gateway device receives the RIP message in RSVP RES V format, otherwise it receives the RIP message in RSVP Error Code format; If the adjustment is successful and the request is accepted, then the gateway devices at both ends update the maintained resource status.
  • the present invention provides a method for resource control in an MPLS network, including resource admission control processing based on service flow and resource admission control processing using RSVP (Resource ReSerVation Protocol) aggregation mode, combined with the explicitness of the RACF functional entity.
  • RSVP Resource ReSerVation Protocol
  • the resource admission control process enables effective control of resources in the MPLS network.
  • FIG. 1 is an architectural diagram of the ITU-T resource admission control subsystem RACF
  • FIG. 2 is a schematic structural diagram of a RACF-controlled MPLS network distributed solution in the prior art
  • FIG. 3 is a flow chart of resource admission control based on a service flow according to an embodiment of the present invention
  • FIG. 4 is a flowchart of resource admission control in an RSVP aggregation mode according to an embodiment of the present invention. detailed description
  • the gateway device (including the SBC, the BG-FE, and the like) receives the resource request of the PD-FE through the Rt interface, sends a resource initialization request to the LER by using the RSVP signaling, checks the availability of the resource, and makes a resource-based admission decision. Because the gateway device is a network boundary point, it also has a transmission-independent policy enforcement function. Therefore, the PD-FE exchanges policy-related messages through the Rw interface.
  • the network element (multiple LSRs) between LER1 and LER2 is omitted in the figure.
  • the process includes the following steps: Step 301, PD-FE Receiving a resource request submitted by the service control layer for the service flow, and sending an RIR (Resource Initiation Request) to the SBC through which the service flow needs to pass. Initiate resource reservation processing; since the MPLS network LSP (Label Switched Path) is unidirectional, it is necessary to send RIR messages to both SBCs at the edge of the network;
  • RIR Resource Initiation Request
  • Step 302 the SBC sends an RSIR PATH format RIR message to the peer SBC to perform resource availability check according to the resource requested by the PD-FE, and the RIR message first arrives at the LER;
  • Step 303 The LER processes the RIR message in the RSVP PATH format, and determines the number of resources to be requested in the corresponding TE (Traffic Engineering) tunnel according to the message.
  • Step 304 The LER forwards the RIR message in the RSVP PATH format to the SBC of the peer end to perform a resource reservation request.
  • Step 305 The network element (including the LSR) passing the RIR message performs resource availability check. a. If the TE tunnel has sufficient resources to accept the current resource request, the SBCs at both ends receive the returned RSVP RESV format. RIP (Resource Initiation Response) message, the resource request will be accepted; b. If the TE bandwidth is fixed and there are not enough resources, the SBCs at both ends will receive the returned RSVP Error Code (resource reservation) Protocol error code) format RIP message; c.
  • RSVP Error Code Resource reservation Protocol error code
  • LER is DS-TE (DifServ-aware Traffic Engineering)
  • LER can bandwidth to TE
  • the allocation is adjusted, for example, the bandwidth of the low-priority TE is adjusted to the high-priority TE. If the adjusted resource can satisfy the request, the SBC will receive the RIP message in the RSVP RESV format, otherwise the RIP in the RSVP Error Code format is received. Message.
  • the resource admission control process in the RSVP aggregation mode is used.
  • the SBC of the network edge maintains the resource usage status in the network.
  • the network elements between LER1 and LER2 are omitted).
  • the process includes the following steps:
  • Step 401 The PD-FE receives the resource request submitted by the service control layer for the service flow, sends the RIR message to the SBC through which the service flow needs to be sent, and initiates resource reservation processing. Since the MPLS network LSP path is unidirectional, it needs to be to the network edge. Both SBCs send RIR messages;
  • Step 402 The SBC determines, according to the maintained MPLS network resource status, whether the currently available resource is Meet resource requests;
  • Step 403 If the currently available resource can satisfy the resource request, the SBCs at both ends accept the request and update the resource status; the subsequent SBCs use the corresponding priority label for the corresponding service flow, and the LER maps the service flow according to the priority information. Go to the corresponding TE tunnel, end the process, and no longer perform the next steps;
  • Step 404 If the currently available resources are insufficient, the SBCs at both ends respectively send the aggregated RSVP PATH message to the other party to perform a bandwidth reservation request (to avoid repeated application release, the bandwidth requested to be reserved herein may be the bandwidth exceeding the current single request);
  • Step 405 If the resource reservation is successful, the SBC respectively receives the RSVP RESV message, and updates the maintained resource status information;
  • Step 406 If the bandwidth reservation is unsuccessful, then a. If the MPLS TE bandwidth is fixed and there are not enough resources, the SBCs at both ends receive the RIP message in the returned RSVP Error Code format; b. If the LER is between It is a DS-TE. If the corresponding TE does not have enough resources, the bandwidth allocation between the TEs can be adjusted. For example, the bandwidth of the low-priority TE is adjusted to the high-priority TE. If the adjusted resource can satisfy the request, Then, the SBCs at both ends receive the RIP message in the returned RSVP RESV format, otherwise they will receive the RIP message in the RSVP Error Code format.
  • Step 407 If the bandwidth adjustment succeeds and the request is accepted, the SBCs at both ends update the maintained resource status.
  • the gateway device is described as an SBC.
  • the gateway device may also be the aforementioned BG-FE, or other gateway device, and the resource admission control processing flow is the same, and will not be described in detail herein.
  • the invention provides a method for resource control in an MPLS network, including resources based on service flows.
  • RSVP Resource ReSerVation Protocol

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

Abstract

La présente invention concerne un procédé de commande d’accès aux ressources de réseau à architecture de commutation d’étiquettes multiprotocole dans le domaine de la communication. L’invention résout un problème de nombre supérieur de cartes d’architecture non figuratives ne pouvant exprimer de manière distincte un contrôle détaillé pour une ressource de réseau MPLS par une fonction RACF. Le procédé comprend : la sélection par une entité de fonction de décision de règles (PD-FE) de certains dispositifs de passerelle à travers lesquels un flux de service doit transiter pour transmettre une demande de commande de ressource; la détermination par les dispositifs de passerelle de la disponibilité actuelle de ressource; dans l’affirmative, ils admettent la demande; autrement, ils demandent une ressource pour le flux de service par un message de protocole de réservation de ressource (RSVP). Le procédé comprend le contrôle d’accès aux ressources basée sur un processus de convergence de flux de service et de procédé de contrôle d’accès aux ressource au moyen d’un protocole de réservation de ressources (RSVP) et le procédé assure le contrôle détaillé efficace pour une ressource dans le réseau MPLS en combinant un contrôle détaillé d’accès aux ressources d’une entité de fonction (RACF).
PCT/CN2009/072742 2008-07-16 2009-07-13 Procédé de commande d’accès aux ressources de réseau à architecture de commutation d’étiquettes multiprotocole WO2010006545A1 (fr)

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CN2008101429146A CN101309229B (zh) 2008-07-16 2008-07-16 一种多协议标签交换架构网络资源接纳控制的方法
CN200810142914.6 2008-07-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120244531A1 (en) * 2011-03-25 2012-09-27 M&D, Inc Method for providing information for diagnosing cancer using quantitative real-time pcr and kit for diagnosing cancer for the same
CN113050703A (zh) * 2021-02-05 2021-06-29 新华三技术有限公司 一种流量控制方法及设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101309229B (zh) * 2008-07-16 2012-06-13 中兴通讯股份有限公司 一种多协议标签交换架构网络资源接纳控制的方法
CN102215475B (zh) * 2010-04-02 2015-04-01 中兴通讯股份有限公司 一种漫游场景下资源查询方法和***
CN108512757B (zh) * 2017-02-27 2020-12-11 中兴通讯股份有限公司 一种按需带宽调整的方法及装置
CN109391563B (zh) 2017-08-08 2022-04-05 华为技术有限公司 一种资源预留方法以及相关设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060018255A1 (en) * 2004-07-26 2006-01-26 Avaya Technology Corp. Defining a static path through a communications network to provide wiretap law compliance
CN101309229A (zh) * 2008-07-16 2008-11-19 中兴通讯股份有限公司 一种多协议标签交换架构网络资源接纳控制的方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060018255A1 (en) * 2004-07-26 2006-01-26 Avaya Technology Corp. Defining a static path through a communications network to provide wiretap law compliance
CN101309229A (zh) * 2008-07-16 2008-11-19 中兴通讯股份有限公司 一种多协议标签交换架构网络资源接纳控制的方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120244531A1 (en) * 2011-03-25 2012-09-27 M&D, Inc Method for providing information for diagnosing cancer using quantitative real-time pcr and kit for diagnosing cancer for the same
CN113050703A (zh) * 2021-02-05 2021-06-29 新华三技术有限公司 一种流量控制方法及设备

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