WO2007093128A1 - Procédé et système pour la configuration dynamique d'une stratégie de service - Google Patents

Procédé et système pour la configuration dynamique d'une stratégie de service Download PDF

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Publication number
WO2007093128A1
WO2007093128A1 PCT/CN2007/000561 CN2007000561W WO2007093128A1 WO 2007093128 A1 WO2007093128 A1 WO 2007093128A1 CN 2007000561 W CN2007000561 W CN 2007000561W WO 2007093128 A1 WO2007093128 A1 WO 2007093128A1
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WIPO (PCT)
Prior art keywords
service
function entity
olt
management subsystem
address
Prior art date
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PCT/CN2007/000561
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English (en)
Chinese (zh)
Inventor
Sulin Yang
Lehong Niu
Weilong Ouyang
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007093128A1 publication Critical patent/WO2007093128A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/50—Network service management, e.g. ensuring proper service fulfilment according to agreements
    • H04L41/5041—Network service management, e.g. ensuring proper service fulfilment according to agreements characterised by the time relationship between creation and deployment of a service
    • H04L41/5045—Making service definitions prior to deployment

Definitions

  • the present invention relates to the field of optical network technologies, and in particular, to a method and system for dynamically configuring a service policy, and a user interface device in the technical field.
  • optical access network An access network implemented by optical access technology is called an optical access network (O AN ).
  • O AN An access network implemented by optical access technology
  • PON passive optical network
  • An optical access network is an implementation technology of an optical access network, which implements a point-to-multipoint optical access technology.
  • FIG. 1 shows the structure of a PON system.
  • the PON system consists of an Optical Line Terminal (ODT), an Optical Distribute Network (ODN), and a user interface device.
  • ODT Optical Line Terminal
  • ODN Optical Distribute Network
  • the 0LT is mainly used to provide a network side interface (SNI, Service Node Interface) for the 0AN, and one or more 0DNs are connected.
  • the ODN is a passive optical splitting device, which is mainly used to transmit the downlink data of the 0LT to each user interface device through the optical branch, and simultaneously transmit the uplink data of the user interface device to the 0LT through convergence.
  • the user interface device is connected to the 0DN, and is mainly used to provide a user network interface (UNI, User Network Interface) for the OAN, and is connected to each service function entity through the UNI.
  • the business function entity may be a Customer Premises Equipment (CPE) or a terminal module that provides a specific service.
  • CPE Customer Premises Equipment
  • the user interface device may be an Optical Network Unit (OJ) or an Optical Network Termination (ONT).
  • OJ Optical Network Unit
  • ONT Optical Network Termination
  • the business function entity can be integrated inside the user interface device, for example, The Integrated Access Device (IAD) module and the home gateway module can be integrated inside the user interface device.
  • IAD Integrated Access Device
  • the home gateway module can be integrated inside the user interface device.
  • the UI is an internal interface.
  • the user interface device schedules the service flow transmitted by the service function entity according to the saved service policy to meet the QoS and delay requirements of the service flow.
  • the service policy is mainly statically configured on the user interface device, or configured on the user interface device through the OLT.
  • the service policy is statically configured on the user interface device, the service policy is fixed.
  • the user interface device needs to be manually updated or upgraded.
  • the service policy is configured on the user interface device through the OLT.
  • the OLT maintenance personnel need to configure a new policy and deliver the new policy to the user interface device through the OLT.
  • the embodiment of the present invention provides a method for dynamically configuring a service policy, which can facilitate service upgrade and new service development.
  • the embodiment of the present invention further provides a system for dynamically configuring a service policy, in which the service used by the user and the new service can be conveniently upgraded.
  • the embodiment of the present invention further provides a user interface device, which can conveniently upgrade a service used by a user and provide a new service to a user.
  • An embodiment of the present invention provides a method for dynamically configuring a service policy, where the method includes the following steps:
  • the service function entity When the service is used, the service function entity sends a service registration request to the preset integrated control system;
  • the integrated control system obtains the QoS parameters of the service corresponding to the service registration request according to the QoS parameters of the pre-stored service quality, and delivers the QoS parameters to the optical line terminal OLT;
  • the OLT formulates a service policy according to the received QoS parameters, and configures the service policy to the user interface device.
  • the embodiment of the present invention further provides a system for dynamically configuring a service policy, including an optical line terminal OLT, an optical distribution network ODN, a user interface device, a service function entity, and an integrated control system;
  • the service function entity is configured to send a service registration request to the integrated control system; the integrated control system is configured to save a QoS parameter of the service; and after receiving the service registration request sent by the service function entity And obtaining the QoS parameter of the service corresponding to the service registration request according to the saved QoS parameter, and sending the QoS parameter to the OLT; the OLT, configured to formulate a service policy according to the received QoS parameter, and The service policy is configured on the user interface device corresponding to the service function unit.
  • the embodiment of the present invention further provides a user interface device, including a policy library, a flow classification and mapping unit, a scheduling unit, and more than one user network interface UNI and ANI;
  • the policy library is configured to save the OLT according to the service control The business policy formulated by the QoS parameters delivered by the system;
  • the UNI is configured to receive a user-side service flow, and send the information to the flow classification and mapping unit.
  • the flow classification and mapping unit is configured to perform flow classification and mapping according to the service policy in the policy library, and according to the traffic classification and mapping. The result is sent to the corresponding T-C0NT buffer in the scheduling unit;
  • the scheduling unit includes a scheduling controller and at least one T-CONT buffer; the scheduling controller performs scheduling on the traffic flow in the T-C0NT buffer according to the policy policy of the policy library; the T-CONT buffer passes The scheduled service flow is sent to the ANI;
  • the ANI is configured to send the received service flow.
  • the embodiment of the invention provides a method for dynamically configuring a service policy, which pre-sets an integrated control system, and stores a service quality QoS parameter of the service in the integrated control system; when the user uses the service, the integrated control system saves according to itself QoS parameters, the corresponding business policy is configured on the user interface device.
  • the present invention also provides a system for dynamically configuring a service policy, and a user interface device.
  • FIG. 1 is a schematic diagram of a prior art PON system
  • Figure 3 is an exemplary structural view of the system of the present invention.
  • FIG. 5 is a flowchart of obtaining an IP address by a service function entity according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an access network management device according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a user interface device according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of internal processing of a user interface device according to an embodiment of the present invention. Mode for carrying out the invention
  • an integrated control system is set, and a service quality QoS parameter of the service is stored in the integrated control system; when the user uses the service, the integrated control system configures the corresponding service on the user interface device according to the QoS parameter saved by the user.
  • FIG. 2 is an exemplary flowchart of a method according to an embodiment of the present invention.
  • the service function entity sends a service registration request to the integrated control system when the user initiates the service.
  • the integrated control system obtains the QoS parameters of the service registration request corresponding service according to the QoS parameters saved by itself, and delivers the QoS parameters to the optical line terminal OLT.
  • the OLT formulates a service policy according to the received QoS parameters, and configures the service policy on the user interface device.
  • FIG. 3 is an exemplary structural diagram of a system according to an embodiment of the present invention.
  • the system also includes an integrated control system 35.
  • the service function entity 34 is further configured to send a service registration request to the integrated control system 35.
  • the integrated control system 35 is mainly used to store the QoS parameters of the service; and after receiving the service registration request sent by the service function entity 34, the QoS parameter of the service registration request corresponding service is obtained according to the QoS parameter saved by the service function entity, and the QoS parameter is It is sent to the optical line terminal OLT31.
  • 0LT31 configured to formulate a service policy according to the received QoS parameter, and configure the service policy to the user interface device 33 corresponding to the service function unit.
  • FIG. 4 is a flowchart of a method according to an embodiment of the present invention.
  • the integrated control system includes at least: a service control subsystem and a resource management subsystem.
  • the specific process of this method is as follows:
  • step 401 when the user uses the service, the service function entity initiates a service registration request to the service control subsystem.
  • the message contains user information identifying the business function entity and service information characterizing the current service type.
  • the user information here may be link location information and/or user name and the like.
  • the link location information of the service function entity may be an identifier of the user interface device to which the service function entity is connected and/or a port of the user interface device to which the service function entity is connected.
  • the service function entity sends a service registration request to the service control subsystem through the user interface device connected to itself.
  • Business registration is made in the user interface device Send to the business control subsystem with the default business policy. For example, forward to the OLT through the Best effort queue and the default buffer.
  • step 402 the service control subsystem searches for the QoS parameter saved by itself according to the received service registration request, and obtains the QoS parameter of the service corresponding to the service registration request.
  • the service control subsystem searches for the subscription database of the user corresponding to the current service function entity according to the user information carried in the service registration request, and searches and obtains the current request service according to the service type carried in the service registration request in the subscription database.
  • the information contained in the QoS parameters may be: bandwidth, priority, and/or delay.
  • step 403 the service control subsystem sends a resource occupation request to the resource management subsystem according to the obtained QoS parameter, where the QoS parameter is carried.
  • one or more resource management subsystems may be present in the integrated control system.
  • the service control subsystem can directly send resource occupancy requests to the resource management subsystem.
  • the service control subsystem may store the correspondence between the resource management subsystem and the management IP network segment, and determine the network segment where the service function entity is located according to the IP address carried in the service registration request. And then sending a resource occupation request to the resource management subsystem managing the network segment according to the determined network segment.
  • the service control subsystem may also determine the resource management subsystem corresponding to the service function entity according to the link location information in the user information carried in the service registration request.
  • step 404 the resource management subsystem determines, according to the received resource occupation request, whether there is a resource requested by the service control subsystem on the IP network segment where the service function entity is located, and if so, the resource management subsystem sets the QoS parameter. Send to the corresponding OLT, go to step 405; otherwise, end the process of dynamically configuring the service policy.
  • the resource management subsystem can pass the QoS parameters carried in the resource occupation request Determine whether the requested resource still exists on the network segment managed by itself.
  • the method for the resource management subsystem to obtain the current service function entity corresponding to the OLT may be: setting a correspondence between the link location information of the service function entity and the OLT connected thereto in the resource management subsystem, and obtaining the correspondence relationship by searching the corresponding relationship The OLT that the business function entity is connected to.
  • the method for obtaining the corresponding OLT can also be obtained by means of dynamic searching.
  • step 405 after receiving the QoS parameters delivered by the resource management subsystem, the OLT formulates a service policy for the OLT according to the received QoS parameters.
  • the service policy includes: a service classification policy, a service mapping policy, and a scheduling policy.
  • the QoS parameters of the VoIP service delivered by the OLT to the resource management subsystem are bandwidth of 64 kbps, delay of 5 ms, jitter of lms, and priority of high.
  • the OLT formulates the service flow classification and mapping policy according to the QoS parameter, and the scheduling policy may be: classifying the service flow according to the IP address, VLAN, MAC address, etc.
  • the resource management subsystem can simultaneously send the link location information when transmitting the QoS parameter, so as to obtain the corresponding link location information.
  • step 406 the OLT sends the formulated service policy to the user interface device corresponding to the service function entity.
  • the OLT can conduct services through an OAM interface between itself and a user interface device, such as an Optical Network Terminal Management Control Interface (OMCI) or a Physical Layer OAM (PLOAM) channel.
  • OMCI Optical Network Terminal Management Control Interface
  • PLOAM Physical Layer OAM
  • the policy is sent to the corresponding user interface device.
  • the OLT may determine the location of the interface user equipment corresponding to the service function entity according to the link location information of the service function entity delivered by the resource management subsystem.
  • step 407 the user interface device configures a service policy delivered by the OLT.
  • the user interface device saves the service flow identification, mapping, and scheduling policies delivered by the OLT to the policy database.
  • the scheduling mode of each level scheduler is set, for example, including HOL, WR, and parameters.
  • the service function entity Before the service function entity sends the service registration request, the service function entity needs to obtain the IP address used by itself and the relevant address information of the service control subsystem, and access the functional entity in the service control subsystem according to the relevant address information of the service control subsystem.
  • the manner in which the service function entity obtains the IP address of the service function and the related address information of the service control subsystem may be static configuration or dynamic acquisition.
  • the implementation of the static configuration mode only needs to statically configure the corresponding IP address in the service function entity and the related address information for the current service function entity.
  • the method for dynamically obtaining an IP address and related address information of the service control subsystem in the embodiment of the present invention may be implemented by using the flow shown in FIG. 5.
  • the access network management subsystem needs to be further included in the integrated control system.
  • the method is specifically:
  • step 501 after the user interface device completes the device registration on the OLT, and after establishing a Layer 2 link between the ONT and the OLT through negotiation and configuration, the service function entity sends a configuration parameter request to the access network management subsystem, requesting The access network management subsystem assigns an IP address to it and a related address parameter of the service control subsystem.
  • the service function entity may request an IP address and a server in the service control subsystem from the access management subsystem in a manner of a Dynamic Host Configuration Protocol (DHCP) or a PPP over Ethernet (PPP over Ethernet) protocol. Configuration parameters such as address.
  • DHCP Dynamic Host Configuration Protocol
  • PPP over Ethernet PPP over Ethernet protocol over Ethernet
  • step 502 the address allocation server in the access network management subsystem allocates an IP address to the service function entity, and obtains the relevant address information of the service control subsystem according to its own save, and allocates the obtained IP address and the service control system.
  • the related address information is sent to the business function entity.
  • the access management subsystem may also associate the IP address assigned to the service function entity with the location information according to the location information inserted by the OLT, and store it in the database of the access management subsystem.
  • the service control subsystem may carry the IP address of the current service function entity in the resource occupation request sent to the resource management subsystem; and, in step 404, the resource management subsystem may receive the The IP address carried in the message obtains the location information of the OLT by accessing the database of the access management subsystem, so that the resource management subsystem can obtain the OLT corresponding to the service function entity according to the location information.
  • the IP address is the address that the message must carry in order to transmit on the network.
  • the address distribution server described in this step may be a DHCP server or a Radius server.
  • step 503 the service function entity obtains an IP address assigned to itself and related address information of the service control subsystem to be accessed.
  • the service function entity may initiate a service registration request to the service control subsystem for subsequent processing, that is, the process shown in FIG.
  • FIG. 6 is a schematic structural diagram of a system according to an embodiment of the present invention.
  • the system further includes: an integrated control system 65 in addition to the OLT 61, the ODN 62, and the user interface device 63.
  • the integrated control system 65 is located in the control network and is connected to the optical access network through a broadband access server (BAS), that is, connected to the OLT 61.
  • BAS broadband access server
  • the integrated control system 65 is mainly configured to save the QoS parameters of the service. After receiving the service registration request sent by the service function entity 64, the QoS parameter of the service registration request corresponding service is obtained according to the QoS parameter saved by the service function entity, and the QoS parameter is obtained.
  • the parameters are sent to the optical line terminal OLT 61.
  • the OLT 61 is mainly configured to formulate a service policy according to the received QoS parameters, and configure the service policy to the user interface device 63 corresponding to the service function unit.
  • the integrated control system 65 includes at least: a service control subsystem 651 and a resource management subsystem 652.
  • the service control subsystem 651 is mainly configured to save the QoS parameter of the service; receive the service registration request sent by the service function entity 64, and obtain the QoS parameter corresponding to the service registration request according to the QoS parameter saved by itself; Sent to resource management subsystem 652.
  • the resource management subsystem 652 is mainly used to determine whether the network segment where the service function entity 64 is located has the required resources. When the required resources exist on the network segment, the QoS parameters are sent to the OLT 61.
  • the QoS parameter of the service saved by the service control subsystem 651 may be the service subscription data of the user.
  • the service control subsystem 651 can further complete the charging function.
  • the resource management subsystem 652 manages and controls access network resources
  • the integrated control system 65 can include a plurality of resource management subsystems 652 that manage different IP network segments.
  • the integrated control system 65 may further include an access network management subsystem 653.
  • the access network management subsystem 653 is mainly configured to receive a configuration parameter request sent by the service function entity 64, allocate an IP address to the service function entity 64, and provide related address information of the service control subsystem 651.
  • the access network management subsystem 653 mainly includes an address allocation server 71 and an access database 72.
  • the address allocation server 71 is mainly configured to receive the configuration parameter request sent by the service function entity 64, and allocate the configuration parameter request to the service function entity 64.
  • the IP address and the related address information of the service control subsystem 651 are provided; and the correspondence between the IP address of the service function entity 64 and the IP address of the service function entity 64 is established according to the location information of the OLT 61 added by the OLT 61 in the configuration parameter request, and stored in the Access to database 72.
  • the access database 72 is mainly used to store the correspondence between the location information of the OLT 61 and the IP address of the connected service function entity 64.
  • the resource management subsystem 652 can dynamically obtain the corresponding OLT 61 location information by searching the access database 72 and according to the IP address carried in the resource occupation request; and further, sending the QoS parameter according to the obtained location information.
  • the address distribution server may assign an IP address by using a DHCP server or a Radius server to assign an address.
  • the Sr interface is a virtual interface between the service function entity 64 and the service control subsystem 651.
  • the service function entity 64 applies for service registration to the service control subsystem 651 through this interface, and performs service with the service.
  • the data packet transmitted by the Sr interface is an IP data packet.
  • the Rr interface is an interface between the service control subsystem 651 and the resource management subsystem 652.
  • the resource management subsystem 652 communicates with the service control subsystem 651 through which the service control subsystem 651 communicates to the resource management subsystem.
  • System 652 requests the business function entity 64 to perform the resources required for the business.
  • the Rd interface is an interface between the resource management subsystem 652 and the OLT 61.
  • the resource management subsystem 652 delivers the QoS parameters of the service flow and the link location of the service function entity 64 to the OLT 61 through the interface.
  • the service function entity 64 shown in FIG. 6 may be a Customer Premises Equipment (CPE), or may be a terminal module that provides a specific service, which may be integrated inside the user interface device 63.
  • the user interface device 63 may also be external to the user interface device 63, such as an Integrated Access Device (IAD) and a home gateway module, and may also exist as a separate user-side device.
  • UNI It is an interface between the service function entity 64 and the user interface device 63.
  • the UNI is an internal interface.
  • the service function entity 64 is an independent device, the UNI is an external interface.
  • UNI can be high-speed Ethernet (FE, Fast Ethernet interface, Gigabit Ethernet (GE) interface, Asymmetric Digital Subscriber Loop (ADSL) interface, high-speed digital subscriber loop (VDSL, Very High speed Digital Subscriber Loop ) interface.
  • the integrated control system 65 can also connect to the OLT6U through the BAS.
  • the user interface device can transmit the service flow according to the configured service policy.
  • FIG. 8 is a structural diagram of a user interface device according to an embodiment of the present invention.
  • the user interface device includes at least a policy library 81, a flow classification and mapping unit 82, a scheduling unit 83, and more than one UNI84 and ANI85, which are further used to process uplink data sent by the service function entity.
  • the method by which the user interface device processes the downlink data can use the methods in the prior art.
  • the policy library 81 is mainly used to save the service policy formulated by the OLT according to the QoS parameters delivered by the service control subsystem.
  • the U I84 is mainly used to receive the service flow of the user side, and is sent to the flow classification and mapping unit 82.
  • the traffic classification and mapping unit 82 is mainly configured to perform traffic classification and mapping according to the service policy in the policy library 81, and send the traffic flow to the corresponding T-CONT buffer 832 in the scheduling unit 83 according to the result of the traffic classification and mapping.
  • the scheduling unit 83 includes a scheduling controller 831 and at least one T-CONT buffer 832; the scheduling controller 831 performs scheduling on the traffic flow in the T-CONT buffer 832 according to the service policy of the policy library 81; T-CONT buffer 832
  • the scheduled traffic is sent to ANI85.
  • the ANI85 is connected to the ODN and is used to send the scheduled data from the ODN. Only one T-CONT buffer 832 is shown in FIG.
  • the business policies mentioned above are flow classification, mapping strategy, and scheduling strategy. There is a default type of policy in policy library 81 for unregistered and authenticated traffic or pre-defined traffic.
  • the traffic classification and mapping module is mainly used to process each service flow according to the policy in the policy library 81.
  • the scheduling mode may be HOL or WRR, and there may be one or more levels of scheduling.
  • the stream classification and mapping unit 82 may be composed of a stream classification and mapping controller 821, and a stream classification and mapping executor 822.
  • the flow classification and mapping controller 821, the flow classification is mainly used to control the flow classification and mapping executor 822, and the flow classification and mapping executor 822 classifies the service flow and maps it to a priority queue.
  • the scheduling unit 83 includes a schedule controller 831 and at least one T-CONT buffer 832.
  • the T-CONT buffer 832 includes a priority queue and a scheduler, the scheduling controller 831 is used to control the scheduler in the T-CONT buffer 832, and the priority queue is scheduled by the scheduler.
  • the dispatch controller 831 sets the method and parameters for the scheduler to schedule the priority queue according to the scheduling policy in the policy library 81.
  • the user interface device processes the processing of the uplink service flow sent by the service function entity received from the UNI, and introduces the user interface device.
  • Figure 9 for the direction of the internal service flow of the user interface device.
  • the user interface device After receiving the service data flow from the UNI interface, the user interface device sends the queue to the traffic classification and mapping unit through the UI.
  • a flow classification and mapping controller in the flow classification and mapping unit, the control flow classification and the mapping performer complete the classification of the user service data flow according to the policy in the policy library, and map the service flow to the corresponding according to the policy of the service flow.
  • the priority queue of the corresponding Port-ID in the T-CONT buffer goes.
  • the scheduling controller in the scheduling unit sets the queue scheduling mode and scheduling parameters according to the scheduling policy in the policy library.
  • the traffic in the priority queue of the Port-ID in the T-CONT buffer is dispatched to the outbound queue of the T-CONT buffer.
  • the scheduling of the priority queue inside the T-CONT buffer may have one or more levels of scheduling, and the scheduling method and scheduling parameters of each level of scheduling are all saved by the OLT in a policy library. Decide.
  • the traffic in the T-CONT outbound queue is uploaded to the OLT in the upstream time slot allocated by the OLT to the T-CONT buffer.
  • the technical solution of the embodiment of the invention also implements hierarchical management of the user interface device and the service function entity.
  • both the user interface device and the service function entity are managed by the OLT.
  • the service function entity is managed by the service control subsystem. For example, business registration, and acquisition of business function entity IP addresses.
  • the management of the user interface device is independent of the service, and the development and upgrade of the service has nothing to do with OMCI.
  • OMCI-related content that is, modify or add ME attributes or add ME
  • user interface devices can implement multiple business function entities.
  • the business function entity can realize the automation of configuration, maintenance and management through the integrated control system, and enhances the expansion capability of the ONT and the expansion capability of the service on the ONT.
  • the technical solution of the embodiment of the present invention conforms to the technical concept of separation of control and bearer in the development of network technology, and reflects the idea of separation of service and network. It provides great convenience for interworking between OLTs and user interface devices of different equipment vendors.

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Abstract

L'invention concerne un procédé pour la configuration dynamique d'une stratégie de service. Lors d'une utilisation du service, une entité de fonction de service envoie une demande d'enregistrement de service à un système de contrôle intégré prédéfini. Le système de contrôle intégré obtient un paramètre QS de service correspondant à la demande d'enregistrement de service selon un paramètre QS de service pré-stocké, et l'envoie à un terminal de ligne optique (OLT). L'OLT constitue la stratégie de service selon le paramètre QS reçu et configure cette stratégie de service pour le dispositif d'interface utilisateur. En outre, la présente invention concerne un système destiné à configurer dynamiquement la stratégie de service et un dispositif d'interface utilisateur. La présente invention permet de configurer dynamiquement la stratégie de service pour l'entité de fonction de service, de mettre à niveau facilement le service utilisé par l'utilisateur et de fournir le nouveau service à l'utilisateur.
PCT/CN2007/000561 2006-02-16 2007-02-15 Procédé et système pour la configuration dynamique d'une stratégie de service WO2007093128A1 (fr)

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