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WO2007036150A1 - Systeme et procede de controle d'un reseau d'acces - Google Patents

Systeme et procede de controle d'un reseau d'acces Download PDF

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Publication number
WO2007036150A1
WO2007036150A1 PCT/CN2006/002542 CN2006002542W WO2007036150A1 WO 2007036150 A1 WO2007036150 A1 WO 2007036150A1 CN 2006002542 W CN2006002542 W CN 2006002542W WO 2007036150 A1 WO2007036150 A1 WO 2007036150A1
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WIPO (PCT)
Prior art keywords
access network
resource control
service
user
rcef
Prior art date
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PCT/CN2006/002542
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English (en)
French (fr)
Inventor
Weilong Ouyang
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to DE112006002598.8T priority Critical patent/DE112006002598B4/de
Publication of WO2007036150A1 publication Critical patent/WO2007036150A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/12Discovery or management of network topologies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/34Signalling channels for network management communication
    • H04L41/344Out-of-band transfers

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a system and method for implementing access network control. Background of the invention
  • ETSI TISPAN European Telecommunication Standardization Association's telecommunications and Internet convergence services and advanced network protocols
  • QoS Quality of Service
  • IP Edge IP Edge
  • the control system includes A-RACF (resource access control function of the access network) and SPDF (policy decision function).
  • the service in the network may provide a certain level of service quality assurance; however, in the network structure, only one logical interface is reserved for the access network, and the specific application form of the logical interface is not determined, therefore,
  • the service quality of the service cannot be guaranteed in the access network, that is, the end-to-end quality of service guarantee cannot be implemented in the network structure shown in FIG. 1.
  • the access network such as DSL (Digital Subscriber Line) aggregates the traffic of a large number of users and sends them to the IP Edge for Layer 2 termination and provides Layer 3 services.
  • the control system of TISPAN can solve the problem after the IP Edge. Business service quality issues, but can not solve the quality of service from the user to the IP Edge.
  • ADSL Asymmetric Digital Subscriber Line
  • GP0N Gigabit Passive Optical Network
  • SH. DSL High-Speed Digital Subscriber Line
  • next-generation telecommunications network provides reliable service quality as PSTN (traditional telephone network)
  • PSTN traditional telephone network
  • the object of the present invention is achieved by the following technical solutions -
  • the present invention provides a system for implementing access network control, including an access network and an IP edge, and the access network is provided with access network resource control execution a functional entity, and the access network resource control executive function entity provides
  • the resource control in the IP edge performs the function of the RCEF entity communication interface, and the access network resource control execution function entity of the interface reports the collected topology information of the access network to the RCEF entity, and receives the RCEF entity.
  • the resource control strategy is sent to control the resources of each node.
  • the access network resource control execution function entity includes: a topology information collection module: configured to collect topology information of each node in the access network, and send the information to the RCEF entity through the interface;
  • the resource control policy execution module receives the resource control policy or the resource control command delivered by the RCEF entity, and controls and manages the resource of the node according to the resource control policy or the resource control command.
  • the topology information includes: connectivity of each node in the access network, port attributes, link information of each node of the user equipment in the access network, and/or a communication address of each node in the access network.
  • the RCEF entity includes:
  • the access network topology information saving module is configured to save topology information of each node in the access network sent by the access network resource control execution function entity, and provide the access network resource control policy processing module;
  • the access network resource control policy processing module is configured to determine a resource control policy for each node according to the topology information, and send the resource control policy to the access network resource control execution function entity.
  • the information stored by the access network topology information saving module includes at least one of the following information determined according to topology information of each node: link information, RCEF, and access network resource control execution function of the user directly connected to the second layer node; The port attribute directly connected to the entity, and the association between the RCEF and the communication address of the access network resource control execution function entity.
  • the present invention also provides a method for implementing access network control, including:
  • the access network resource control execution function entity set in the access network collects the topology information of the access network and reports it to the RCEF entity;
  • the RCEF entity determines the resource control policy in the access network according to the topology information of the access network, and sends the resource control policy to the access network resource control execution function entity;
  • the access network resource control execution function entity inputs resources of nodes in the access network according to the resource control policy Line control management.
  • the topology information of the access network includes:
  • the connectivity of each node in the access network the port attributes, the link information of the user equipment at each node of the access network, and/or the communication address information of each node in the access network.
  • the process of determining the resource control policy in the access network includes:
  • the RCEF determines, according to the saved topology information of the access network, the address information, the link information, and the service policy information of the user as the resource control policy;
  • processing for controlling and managing resources of nodes in the access network includes:
  • the access network resource control execution function entity sends the address information, the link information, and the service policy information of the user to each node, and controls the resource occupation of the user on each node.
  • the method when the user leaves the network, the method further includes:
  • the RCEF notifies the access network resource control execution function entity to send a resource release request
  • the access network resource control execution function entity releases the corresponding resource according to the received request message, and returns a resource release success message to the RCEF.
  • the processing for determining the resource control policy in the access network specifically includes:
  • the application function AF After the user logs in to the service, the application function AF sends the service policy of the service and the address information of the service provider point to the access network resource access control function A-RACF;
  • the A-RACF determines the service policy of the user according to the service policy of the service, and delivers the service policy of the service to the RCEF along with the user address information, as the resource control policy;
  • the process of controlling and managing the resources of the nodes in the access network includes: the access network resource control execution function entity acquires a service policy that is sent by the RCEF according to the user address, and performs the user on each node of the access network. Update of the service strategy.
  • the method when the user leaves the service, the method further includes:
  • the AF sends the service policy information of the service requested by the user to the A-RACF, and the A-RACF sends a release resource request message to the RCEF;
  • the RCEF continues to deliver the release resource request message to the access network resource control execution function entity, and the access network resource control execution function entity updates the service policy of the user in each node of the access network according to the service policy of the service.
  • the invention also provides a multicast service control method, including:
  • the multicast service replication function is started for the multicast service, and the user joins or leaves the multicast group;
  • the initiated multicast service replication function is controlled and updated according to the joining or leaving of the user in the multicast group.
  • the processing of recording the user joining or leaving the multicast group specifically includes:
  • the access network resource control execution function entity When the access network resource control execution function entity receives the multicast service request message for the first time, it creates a counter for the multicast service, and when the user joins the multicast group, the counter is incremented by 1. When the user leaves the multicast group, The counter is decremented by 1.
  • the method further includes: the access network resource control execution function entity receives the multicast control signaling sent by the RCEF, and controls and manages the access network resources occupied by the multicast service according to the received multicast control signaling.
  • the present invention also provides a cluster service control method, including:
  • the access network resource control execution function entity creates a cluster group, and allocates a broadcast table for the corresponding cluster group to allocate reserved resources for each user;
  • the access network resource control execution function entity controls the access network user to perform the group service according to the allocated broadcast table and the reserved resource.
  • the method further includes:
  • the access network resource control execution function entity controls and manages the broadcast table and the resources occupied by each user according to the cluster control signaling received from the RCEF.
  • the present invention provides an effective access network resource control management method and a corresponding system, and the user can guarantee the quality of service to the edge network, that is, can be in the network.
  • End-to-end service quality assurance is provided, which provides corresponding technical support for operators to provide differentiated end-to-end services for users.
  • the implementation of the present invention enables the operational and manageability of a network of telecommunications and Internet convergence to be greatly enhanced.
  • FIG. 1 is a schematic structural diagram of an access network in the prior art
  • FIG. 2a is a schematic structural view of a system provided by the present invention.
  • 2b is a schematic structural diagram of a specific implementation of the system provided by the present invention.
  • FIG. 3 is a schematic diagram of a specific implementation process of a user logging in to the network according to the present invention
  • FIG. 4 is a schematic diagram of a specific implementation process of a swollen user login service
  • FIG. 5 is a schematic diagram of a specific implementation process of a user leaving a network according to the present invention.
  • FIG. 6 is a schematic diagram of a specific implementation process of a user leaving a service according to the present invention.
  • FIG. 7 is a schematic diagram of a specific implementation process of developing a multicast service according to the present invention.
  • the main purpose of the implementation of the present invention is to solve the network of telecommunications and Internet convergence, that is, the TISPAN network architecture has no The law controls the quality of service of the access network.
  • the core of the present invention is that a new functional entity, that is, an access network resource control execution function and a corresponding interface, is added to the system architecture of the TISPAN, and the access network resource control execution function is responsible for collecting topology information of the access network. And reporting to the RCEF (Resource Control Execution Function) through the corresponding interface, so that the RCEF can control and manage the access network based on the topology information of the access network to achieve the purpose of the present invention.
  • RCEF Resource Control Execution Function
  • the structure of the system provided by the present invention may specifically be:
  • the system provided by the present invention modifies the architecture of the TISPAN into the following structure, and adds a new functional entity A-RCEF (AccessNode Resource Control Enforce Function) to the Access Node.
  • A-RCEF AccessNode Resource Control Enforce Function
  • the network resource control execution function and a new interface Ra, which is the physical existence form of the logical interface Ra.
  • a - RCEF collects the topology information of all the nodes of the Access Node and reports them to the RCEF through the Ra interface.
  • the RCEF can obtain the topology information of the entire access network according to the topology information reported by the A-RCEF, and also shields the topology of the access network from the A-RACF (access network resource access control function) to meet the control plane of the TISPAN. Requirements that are independent of the access network topology.
  • A-RCEF includes topology information collection module and resource control policy execution module
  • the topology information collection module is configured to collect topology information of each node in the access network, and send the information to the RCEF entity through the interface;
  • the topology information collected by the A-RCEF includes but is not limited to at least one of the following information:
  • the connectivity of each node in the access network includes a network element device of the access network, such as a DSLAM (Digital Subscriber Line Access Multiplexer), 0LT (Optical Line Terminal), etc.;
  • a network element device of the access network such as a DSLAM (Digital Subscriber Line Access Multiplexer), 0LT (Optical Line Terminal), etc.;
  • Port attributes including port type and bandwidth
  • the resource control policy execution module is configured to receive a resource control policy or a resource control command delivered by the RCEF entity, and control and manage the resource of the node according to the resource control policy or the resource control command.
  • the RCEF entity includes an access network topology information saving module and an access network topology control information processing module, and is used to save the access network sent by the access network resource control execution function entity.
  • the topology information of each node is provided to the access network resource control policy processing module; At least one of the following information can be established on the RCEF:
  • link information directly connected to the L2T Point (the Layer 2 node), which is referred to as link information, specifically refers to the link information of the user connected to the node;
  • the access network resource control policy processing module is configured to determine a resource control policy for each node according to the topology information, and send the resource control policy to the access network resource control execution function entity.
  • the A-RCEF needs to establish the link information of the user and the port attribute of the upper or lower node and the association relationship with the communication address of the upper and lower nodes respectively at each node of the access network. In this way, the control topology of the entire access network centered on the user's link address is established, so that the resource control management of the access network can be performed based on the topology.
  • the resources of the access network can be controlled and managed based on the topology information of the access network, including the user. Controlling and managing the resources of the access network in the process of logging in to the network, logging in to the service, leaving the service, leaving the network, carrying out the multicast service, and performing the cluster service, so that the service quality of the uplink service of the user can be guaranteed, thereby ensuring the user Provide end-to-end quality of service guarantees.
  • the corresponding processing process includes:
  • Step 31 The NASS pushes the IP address of the user, the link information connected to the L2T Point, and the service policy of the user to the A-RACF through the e4 interface, where the service policy includes the service level, the contracted bandwidth, and the authorized Information such as access rights;
  • Step 32 A-RACF pushes the information to the RCEF through the Re interface
  • Step 33 After obtaining the information of the user logging in to the network, the RCEF establishes the related information of the user according to the topology information reported by the A-RCEF, and sends some of the information to the A-RCEF;
  • the RCEF After obtaining the information of the user logging in to the network, the RCEF establishes and stores the user's IP address and link information, the user's service policy, and the port attribute directly connected to the A-RCEF and the communication thereof according to the topology information reported by the A-RCEF. The address is associated, and the user's IP address, link information, and service policy are sent to the A-RCEF through the Ra' interface.
  • A-RCEF performs initialization of the user login network;
  • A-RCEF sends a service policy to each node according to the user's IP address and link information, and controls each node to allocate resources according to the service policy, and performs initialization of the user channel and setting a service policy; 35: After each node is successfully initialized, the A-RCEF returns to the RCEF and the access network user channel is successfully initialized; Step 36: The RCEF continues to return the user initialization success information to the A-RACF.
  • the access network can control the flow of the user accessing the network according to the service policy obtained by the user logging in to the network, so that the uplink and downlink services of the user can be contracted when using the authentication. Bandwidth and service level.
  • the corresponding processing process includes:
  • Step 41 The AF sends the service policy of the service applied by the user and the communication address of the service providing point to the A-RACF through the SPDF through Gq';
  • Step 42 The A-RACF checks the service policy of the service requested by the user, and updates the service policy of the user, for example, allocating reserved resources (or channels) according to the service policy of the service, updating the flow classification and filtering information of the user, and the like. And then sending the user's IP address, the service address of the service provider point, and the service policy to the RCEF;
  • Step 43 The RCEF finds the communication address of the A-RCEF corresponding to the user by the IP address of the user, and sends the service policy of the service to the A-RCEF of the access network through Ra';
  • Step 44 A-RCEF updates the service policy of the user in each node of the access network according to the service policy of the service and the link information of the user.
  • the service service policy is delivered and executed in the access network, thereby solving the problem that the service quality of the access network from the user to the IP Edge cannot be guaranteed.
  • Step 51 AF passes Gq, and the interface will revoke the service.
  • the message of the service service policy applied by the user and the communication address of the service provider point is sent to the A-RACF via the SPDF;
  • Step 52 The A-RACF checks the current state of the user, determines the resource information agreed by the service policy that the user is still using, and sends the IP address of the corresponding user, the communication address of the service provider point, and the service policy information to the RCEF.
  • the service policy of the service to be revoked is delivered to the A-RCEF of the access network;
  • Step 54 The A-RCEF updates the service policy of the user in each node of the access network according to the service policy of the service and the link information of the user, so as to implement the resource allocated to the user by the service service policy.
  • the SPDF or the A-RACF detects that the resource allocated to the user needs to be revoked, it also needs to notify the RCEF to revoke the resource allocated to the user through the Re interface.
  • the specific processing flow is the same as the processing shown in FIG. 5, so no longer ⁇ - Said.
  • the corresponding processing process includes:
  • Step 61 The NASS notifies the A-RACF of the offline information and the workP address of the user by the e4 interface;
  • Step 62 The A-RACF notifies the SPDF and the RCEF of the user's offline information, and the SPDF and the RCEF release and recycle the resources;
  • Step 63 The RCEF checks the resources that the user has allocated, and the Ra interface notifies the A-RCEF to allocate all resources to the user to all the service policies of the user.
  • Step 64 After the A-RCEF recovers the resources successfully, notify the RCEF user that the resource recovery is successful;
  • Step 65 The RCEF continues to notify the NASS of the user resource recovery success message.
  • the A-RACF and the NASS can learn that the resources allocated to the user are all released and the resources allocated to the user are locally recovered.
  • the difference between a multicast service and a unicast service is that a multicast service replicates packets in a multicast spanning tree segment by segment.
  • the access network is required to provide a multicast relay function for message replication and resource allocation for users joining the same multicast group.
  • the delivery of the service policy of the multicast service and the resource allocation process are basically the same as the unicast process.
  • the difference is that the SPDF and the A-RACF need to identify the service request of the multicast group to initiate the replication function of the transport layer and the resources allocated to the user are shared.
  • the resources of the uplink channel and the channel of the user to the RCEF or C-BGF are exclusive, that is, the resources of the shared uplink channel are realized by the copy function.
  • the processing of the specific multicast service includes:
  • Step 71 The A-RACF receives the service policy and resource allocation request of the multicast service for the first time, and creates a counter for it, and allocates a reserved (or shared) resource to the user whenever a user joins the multicast group. And the count is increased by 1;
  • Step 72 At the same time as step 71, the multicast message copying function of the RCEF needs to be started on the A-RCEF, and the multicast message can be copied to the reserved (or shared) channel of the user.
  • Step 73 When the user leaves the multicast group, the reserved (or shared) resource allocated to the user is recovered, and the multicast message copy function of the RCEF is updated to delete the copy information of the user.
  • Step 74 When there is no user in the multicast group, the replication function of the multicast group of the RCEF is turned off.
  • the RCEF When multiple users on the access network join the same multicast group, the RCEF is notified by Ra, the interface notifies the A-RCEF to create a multicast group counter and initiates the replication function of the multicast group, and the multicast group counter and multicast replication function.
  • the management process is the same as that on the RCEF, so it will not be detailed.
  • the difference between the cluster service and the multicast service is that the users of the cluster service are passively accepted, and the users of the multicast service need to initiate the initiative. Therefore, the users of the cluster service also need to log in to the service request service policy and resource allocation.
  • Both SPDF and A-RACF need to identify the cluster group creation request sent by the user.
  • a broadcast table needs to be created for each cluster group, and whenever a user joins the cluster group.
  • the RCEF is notified to add a broadcast table.
  • the RCEF will receive the message received from the user. All users in the cluster are copied to the cluster group.
  • the user is deleted from the attribute table (that is, the broadcast table), and the exclusive resource of the user is released, and the RCEF is notified to update the broadcast table.
  • RCEFs need the ability to allocate reserved channels (or shared channels) shared by multiple users and the ability to replicate cluster group data to that channel.
  • the RCEF needs to notify the A-RCEF to create a broadcast table of the cluster group through the Ra' interface, and copy the attribute table from the RCEF and allocate a reservation (or share) to the user. ) Resources (or channels).
  • the processing flow of A-RCEF for cluster user-initiated packets and cluster user management is the same as that used on RCEF. It also needs the ability of multiple cluster users to allocate shared channels.
  • the implementation of the present invention provides an effective implementation solution for managing and controlling an access network system.
  • the access network resource control implementation solution provided by the present invention can solve the problem that the service quality of the user to the IP Edge cannot be controlled. Achieve end-to-end service quality assurance for users.

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Description

实现接入网控制的系统及方法
技术领域
本发明涉及网络通信技术领域, 尤其涉及一种实现接入网控制的系统及方法。 发明背景
随着技术的不断发展, 在 IP上提供三网 (传统电信网、 互联网和有线电视网)合一 的技术趋势日益显现。 IP网的设计初衷仅是解决位于不同物理位置的设备之间的互连问 题, 具有极大的开放性。 也正是因为其开放性才得以在短短十年间互联网技术已经得到 的长足的发展, 基本已经普及到家庭, 并成为人们日常生活和工作中不可缺少的组成部 分。 同时, 也因为 IP网络的开放性和仅提供互连能力的特性, 使得其无法保证业务的服 务质量和用户访问网络的安全。
为此, ETSI TISPAN (欧洲电信标准化协会的电信和互联网融合业务及高级网络协 议) 采用图 1所示的网络结构对 IP Edge ( IP边缘) 以后的网络进行 QoS (服务质量)控 制, 如图 1所示, 所述的控制系统包括 A- RACF (接入网的资源接入控制功能)和 SPDF (策 略决策功能)。在该网络结构中可以网络中的业务提供一定程度的服务质量保证;但是, 该网络结构中对接入网仅预留了一个逻辑接口, 且并未确定该逻辑接口的具体应用形 式, 因此, 无法在接入网中对业务的服务质量提供保证, 即无法在图 1所示的网络结构 中实现端到端的服务质量保证。
在实际应用过程中, DSL (数字用户线) 等接入网将大量用户的流量汇聚起来送到 IP Edge进行二层终结和提供三层业务, 而通过 TISPAN的控制系统能够解决从 IP Edge之 后的业务服务质量问题, 却无法解决从用户到 IP Edge之间的服务质量。
目前, 广泛使用的 ADSL (非对称数字用户线)接入技术由于采用上行带宽小和下行 带宽大的流量模型, 可以通过差分服务方式部分解决上行的服务质量问题。但是, 随着 新兴接入技术的出现, 如 GP0N (千兆无源光网络) 、 SH. DSL (高速数字用户线)等釆用 上下行带宽大小差别不大的流量模型, 上述在用户到 IP Edge之间的服务质量问题就显 现出来。
因此, 若下一代电信网提供如 PSTN (传统电话网络)一样的可靠的业务服务质量, 则其需要解决困扰宽带发展的最后 "一公里" (即接入网) 的服务质量保证问题。
也就是说, 目前由于接入网服务质量无法保证, 导致在网络中无法提供端到端的服 务质量, 而且, 也无法利用新兴的接入技术的上行带宽更有效地为用户提供业务。 发明内容 本发明的目的是提供一种实现接入网控制的系统及方法, 从而可以在网络中实现针 对接入用户的端到端的业务服务质量保证。
本发明的目的是通过以下技术方案实现的- 本发明提供了一种实现接入网控制的系统, 包括接入网和 IP边缘, 且所述的接入网 中设置有接入网资源控制执行功能实体,且所述的接入网资源控制执行功能实体提供与
IP边缘中的资源控制执行功能 RCEF实体通信的接口,通过该接口所述的接入网资源控制 执行功能实体将收集的接入网的拓扑信息上报给所述的 RCEF实体, 并接收 RCEF实体下发 的资源控制策略, 对各个节点的资源进行控制。
所述的接入网资源控制执行功能实体包括- 拓扑信息收集模块: 用于收集接入网中各个节点的拓扑信息, 并通过所述接口发送 给 RCEF实体;
资源控制策略执行模块: 接收 RCEF实体下发的资源控制策略或资源控制命令, 并根 据所述的资源控制策略或资源控制命令对节点的资源进行控制管理。
所述的拓扑信息包括: 接入网中各个节点的连通性、 端口属性、 用户设备在接入网 的各个节点的链路信息和 /或接入网中的各个节点的通信地址。
所述的 RCEF实体包括:
接入网拓扑信息保存模块,用于保存接入网资源控制执行功能实体发送来的接入网 中各个节点的拓扑信息, 并提供给接入网资源控制策略处理模块;
接入网资源控制策略处理模块,用于根据所述的拓扑信息确定针对各个节点的资源 控制策略, 并下发给接入网资源控制执行功能实体。
所述的接入网拓扑信息保存模块保存的信息包括根据各个节点的拓扑信息确定的 以下信息中的至少一项- 用户直接二层节点相连的链路信息、 RCEF与接入网资源控制执行功能实体直接相 连的端口属性, 以及 RCEF与接入网资源控制执行功能实体的通信地址间的关联关系。
本发明还提供了一种实现接入网控制的方法, 包括:
设置于接入网中的接入网资源控制执行功能实体收集接入网的拓扑信息,并上报给 RCEF实体;
RCEF实体根据所述的接入网的拓扑信息确定接入网中的资源控制策略,并下发给接 入网资源控制执行功能实体;
接入网资源控制执行功能实体根据所述的资源控制策略对接入网中节点的资源进 行控制管理。
所述的接入网的拓扑信息包括:
接入网中各个节点的连通性、 端口属性、 用户设备在接入网的各个节点的链路信息 和 /或接入网中各节点的通信地址信息。
本发明中, 当用户登录网络时, 所述确定接入网中的资源控制策略的处理包括:
RCEF获得用户的登录信息后, 根据保存的接入网的拓扑信息确定用户的地址信息、 链路信息和服务策略信息作为所述资源控制策略;
且所述的对接入网中节点的资源进行控制管理的处理包括:
接入网资源控制执行功能实体将所述的用户的地址信息、链路信息和服务策略信息 下发给各个节点, 控制该用户在各个节点上的资源占用。
本发明中, 当用户离开网时, 所述的方法还包括:
RCEF通知接入网资源控制执行功能实体发送资源释放请求;
接入网资源控制执行功能实体根据收到的请求消息释放相应的资源, 并向 RCEF返回 资源释放成功消息。
所述的确定接入网中的资源控制策略的处理具体包括:
用户登录业务后,应用功能 AF向接入网资源接入控制功能 A-RACF发送业务的服务策 略和业务提供点的地址信息;
A-RACF根据所述业务的服务策略确定用户的服务策略, 并将业务的服务策略随用户 地址信息一起下发给 RCEF, 作为所述的资源控制策略;
且所述的对接入网中节点的资源进行控制管理的处理包括- 接入网资源控制执行功能实体获取 RCEF根据用户地址下发的服务策略,并进行所述 用户在接入网各个节点的服务策略的更新。
本发明中, 当用户离开业务时, 所述的方法还包括:
AF向 A- RACF发送离开用户申请的业务的服务策略信息, 并由 A- RACF向 RCEF发送释放 资源请求消息;
RCEF将所述释放资源请求消息继续下发给接入网资源控制执行功能实体,接入网资 源控制执行功能实体根据所述业务的服务策略更新用户在接入网各个节点的服务策略。
本发明还提供了一种多播业务控制方法, 包括:
在接入网资源控制执行功能实体上, 针对多播业务启动多播业务复制功能, 并记录 用户加入或离开组播组的情况; 根据组播组中用户加入或离开的情况对启动的多播业务复制功能进行控制更新。 所述的记录用户加入或离开组播组的情况的处理具体包括:
接入网资源控制执行功能实体首次收到组播业务请求消息时, 为该组播业务创建计 数器, 并且, 当用户加入该组播组时, 计数器加 1, 当用户离开该组播组时, 计数器减 1。
所述的方法还包括: 接入网资源控制执行功能实体接收 RCEF发来的多播控制信令, 并根据接收到的多播控制信令对多播业务占用的接入网资源进行控制管理。
本发明还提供了一种集群业务控制方法, 包括:
接入网资源控制执行功能实体创建集群组, 并为相应的集群组分配广播表, 为各用 户分配预留资源;
接入网资源控制执行功能实体根据分配广播表和预留资源控制接入网用户开展集 群业务。
所述的方法还包括:
接入网资源控制执行功能实体根据从 RCEF接收到的集群控制信令对所述的广播表 及各用户占用的资源进行控制管理。
由上述本发明提供的技术方案可以看出,本发明提供了一种有效的接入网资源控制 管理方法及相应的系统, 通过本发明可以实现用户到边缘网络的服务质量保证, 即能够 在网络中实现端到端的服务质量保证,从而为运营商为用户提供区分的端到端服务提供 了相应的技术支持。
因此,本发明的实现使得电信和互联网融合的网络的可运营、可管理性能大大提高。 附图简要说明
图 1为现有技术中的接入网结构示意图;
图 2a为本发明提供的系统的结构示意图;
图 2b为本发明提供的系统的具体实现结构示意图;
图 3为本发明中用户登录网络的具体实现处理过程示意图;
图 4为本发是肿用户登录业务的具体实现处理过程示意图;
图 5为本发明中用户离开网络的具体实现处理过程示意图;
图 6为本发明中用户离开业务的具体实现处理过程示意图;
图 7为本发明中开展多播业务的具体实现处理过程示意图。
实施本发明的方式
本发明的实现主要目的是为了解决电信和互联网融合的网络, 即 TISPAN网络架构无 法控制接入网的服务质量的问题。
本发明的核心是 TISPAN的系统架构中增加了一个新的功能实体, 即接入网资源控制 执行功能及相应的接口, 所述的接入网资源控制执行功能负责收集接入网的拓扑信息, 并通过相应的接口上报给 RCEF (资源控制执行功能) , 从而使得 RCEF能够基于所述的接 入网的拓扑信息对接入网进行控制管理, 以实现本发明的目的。
下面将结合附图对本发明的具体实现方式进行说明。
如图 2a所示, 本发明提供的系统的结构具体可以为:
为了管理接入网的服务质量, 本发明提供的系统是将 TISPAN的架构修改为如下结 构, 在 Access Node (接入网) 中增加一个新的功能实体 A-RCEF (AccessNode Resource Control Enforce Function, 接入网资源控制执行功能) 和一个新的接口 Ra, , 该接口 是逻辑接口 Ra的物理存在形式。
A - RCEF负责收集 Access Node所有节点的拓扑信息, 并通过 Ra, 接口上报给 RCEF。 RCEF根据 A- RCEF上报的拓扑信息便可以获得整个接入网的拓扑信息, 同时也向 A- RACF (接入网资源接入控制功能)屏蔽了接入网的拓扑结构, 满足 TISPAN的控制平面与接入 网拓扑无关的要求。
如图 2b所示, 本发明提供的系统中的 A- RCEF和 RCEF的具体实施结构如下:
( 1 ) A- RCEF包括拓扑信息收集模块和资源控制策略执行模块
所述的拓扑信息收集模块, 用于收集接入网中各个节点的拓扑信息, 并通过所述接 口发送给 RCEF实体;
其中, A- RCEF收集的拓扑信息包括但不限于以下至少一种信息:
1、接入网中各个节点的连通性,所述的节点包括接入网的网元设备,例如 DSLAM (数 字用户线接入复用器) 、 0LT (光线路终端) 等; '
2、 端口属性, 包括端口类型和带宽等;
3、 CPE在接入网的各个节点的链路信息;
4、 接入网中的各个节点的通信地址。
所述的资源控制策略执行模块,用于接收 RCEF实体下发的资源控制策略或资源控制 命令, 并根据所述的资源控制策略或资源控制命令对节点的资源进行控制管理。
(2) RCEF实体包括接入网拓扑信息保存模块和接入网资源控制策略处理模块 所述的接入网拓扑信息保存模块,用于保存接入网资源控制执行功能实体发送来的 接入网中各个节点的拓扑信息, 并提供给接入网资源控制策略处理模块; 在 RCEF上可以但不限于建立以下至少一项信息:
1、 用户直接与 L2T Point (二层节点) 相连的链路信息, 简称链路信息, 特指用户 与该节点相连的链路信息;
2、 RCEF与 A- RCEF直接相连的端口属性;
3、 RCEF与 A- RCEF的通信地址间的关联关系;
所述的接入网资源控制策略处理模块,用于根据所述的拓扑信息确定针对各个节点 的资源控制策略, 并下发给接入网资源控制执行功能实体。
在上述系统中, A- RCEF需要在接入网的各个节点分别建立用户的链路信息与上级或 下级节点的端口属性, 以及其与上级和下级节点的通信地址的关联关系。 这样, 就建立 了以用户的链路地址为中心的整个接入网的控制拓扑结构, 从而可以基于该拓扑结构进 行接入网的资源管制管理。
也就是说, 在 RCEF及 A- RCEF上分别建立了相应的接入网的拓扑信息后, 则可以基于 所述的接入网的拓扑信息对接入网的资源进行控制管理, 具体包括在用户登录网络、 登 录业务、 离开业务、 离幵网络、 开展多播业务及集群业务过程中对接入网的资源进行控 制管理, 从而可以使得用户的上行业务的服务质量可以得到保证, 进而保证为用户提供 端到端的服务质量保证。 ,
下面将分别结合具体的处理过程对本发明所述的方法的具体实现进行说明, 各具体 应用实现过程仅为示例, 实际应用本发明并不局限于以下具体处理过程。
(一) 用户登陆网络处理过程 '
具体如图 3所示, 在用户登陆网络, 即在 NASS (网络附着子系统) 中通过网络认证 获得地址信息和服务策略后, 相应的处理过程包括:
步骤 31 : NASS会通过 e4接口将用户的 IP地址、 与 L2T Point相连的链路信息、 用户 的服务策略推送到 A- RACF, 其中, 所述的服务策略包括服务等级、 签约的带宽和授权的 访问权限等信息;
步骤 32: A- RACF则通过 Re接口将这些信息推送给 RCEF;
步骤 33: RCEF在获得用户登陆网络的信息后, 根据 A-RCEF上报的拓扑信息建立用户 的相关信息, 并向 A- RCEF下发其中部分信息;
具体为: RCEF在获得用户登陆网络的信息后, 根据 A- RCEF上报的拓扑信息建立并保 存用户的 IP地址和链路信息、 用户的服务策略、 与 A- RCEF直接相连的端口属性及其通信 地址建立关联, 并将用户的 IP地址、 链路信息和服务策略通过 Ra' 接口下发给 A- RCEF; 步骤 34: A-RCEF进行用户登陆网络的初始化;
具体为: A- RCEF根据用户的 IP地址、 链路信息将服务策略下发到各个节点, 控制各 个节点根据所述的服务策略分配资癞, 进行初始化用户的通道和设置服务策略的处理; 步骤 35:在各个节点初始化成功后, A-RCEF向 RCEF返回接入网用户通道初始化成功; 步骤 36: RCEF继续向 A-RACF返回用户初始化成功信息。
经过上述步骤 31至步骤 36的处理过程,接入网就可以按用户登陆网络获得的服务策 略对用户访问网络的流进行控制, 这样, 用户的上行和下行业务也就能够使用认证时获 得签约的带宽和服务等级。
(二) 用户登陆业务的过程
如图 4所示, 在用户登陆业务, 即用户在 AF中通过业务认证获得业务的服务策略和 业务提供点的通信地址后, 相应的处理过程包括:
步骤 41 : AF通过 Gq' 将该用户申请的业务的服务策略和业务提供点的通信地址经 SPDF下发到 A-RACF;
步骤 42: A- RACF检查该用户申请的业务的服务策略,并更新用户的服务策略,例如, 按业务的服务策略分配预留资源 (或通道) 、 更新用户的流分类和过滤信息等, 之后, 再将用户的 IP地址、 业务提供点的通信地址和服务策略下发到 RCEF;
步骤 43: RCEF由用户的 IP地址找到用户对应的 A-RCEF的通信地址通过 Ra' 将业务的 服务策略下发到接入网的 A- RCEF;
步骤 44: A- RCEF根据业务的服务策略和用户的链路信息更新该用户在接入网各个节 点的服务策略。
通过上述处理过程, 实现了业务服务策略在接入网的下发和执行, 从而解决接入网 从用户到 IP Edge的服务质量无法保证的问题。
(三) 用户离开业务的处理过程
如图 5所示, 在用户离开业务, 即用户停止使用 AF提供的业务, AF需要撤销分配给 该用户业务的服务策略后, 相应的处理过程如下- 步骤 51 : AF通过 Gq, 接口将撤销该用户申请的业务服务策略和业务提供点的通信地 址的消息经 SPDF下发到 A- RACF;
步骤 52: A- RACF检査用户当前状态, 确定用户仍在使用的服务策略所约定的资源信 息, 并将相应用户的 IP地址、 业务提供点的通信地址和服务策略信息下发到 RCEF; 步骤 53: RCEF由用户的 IP地址找到用户对应的 A- RCEF的通信地址, 并通过 Ra, 将需 要撤销的业务的服务策略下发到接入网的 A- RCEF;
步骤 54: A-RCEF根据业务的服务策略和用户的链路信息更新用户在接入网各个节点 的服务策略, 从而实现撤销接入网按业务服务策略分配给该用户的资源。
当 SPDF或 A- RACF检测到分配给用户的资源需要撤销时,还需要通过 Re接口通知 RCEF 撤销分配给该用户的资源, 具体的处理流程与图 5所示的处理过程相同, 故不再 ^-述。
(四)用户离开网络的处理过程
如图 6所示, 在用户离开网络后, 相应的处理过程包括:
步骤 61: NASS会将用户下线信息和工 P地址由 e4接口通知 A- RACF;
步骤 62: A- RACF将用户下线的信息通知 SPDF和 RCEF, 且 SPDF和 RCEF进行资源的释放 和回收;
步骤 63 : RCEF检査该用户已经分配的资源, 并由 Ra, 接口通知 A- RCEF将接入网分配 给该用户的资源全部回收和撤销用户的所有服务策略;
步骤 64: A- RCEF回收资源成功后通知 RCEF用户资源回收成功;
步骤 65: RCEF继续将用户资源回收成功消息通知 NASS。
经过上述处理, A- RACF和 NASS可以得知分配给该用户的资源全部释放成功后回收本 地分配给该用户的资源。
(五)开展多播业务的处理过程
多播业务(multicast )和单播业务 (unicast)的区别是多播业务通过一个多播生成 树逐段进行报文复制, 当同一接入网有多个用户加入到同一个多播组时, 需要接入网提 供多播中继 (relay) 功能为加入同一个多播组的用户进行报文复制和资源分配。
多播业务的服务策略的下发及资源分配过程和单播流程基本一致, 区别的是 SPDF、 A - RACF需要识别多播组的服务请求启动传送层的复制功能和分配给用户的资源是共享 上联通道的资源而用户到 RCEF或 C-BGF的通道是独享的, 即通过复制功能实现共享上联 通道的资源。
如图 7所示, 具体的幵展多播业务的处理过程包括:
步骤 71 : A- RACF在首次收到组播业务的服务策略和资源分配请求, 为其创建一个计 数器, 每当有一个用户加入到该多播组时为该用户分配预留 (或共享)资源且该计数加 1;
步骤 72: 在执行步骤 71的同时, 在 A- RCEF上还需要启动 RCEF的多播报文复制功能, 通过该功能可以将多播报文复制到该用户的预留 (或共享) 通道中; 步骤 73 : 当用户离开多播组时, 则回收分配给该用户的预留 (或共享)资源, 更新 RCEF的多播报文复制功能删除该用户的复制信息;
步骤 74: 当多播组中无用户时, 则关闭 RCEF的该多播组的复制功能。
当接入网有多个用户加入到同一多播组时, RCEF由 Ra, 接口通知 A-RCEF创建多播组 计数器和启动多播组的复制功能,对多播组计数器和多播复制功能的管理和 RCEF上的处 理流程完全相同, 故不再详述。
(六) 开展集群业务的处理过程
集群业务和多播业务的区别是集群业务的用户是被动接受,而多播业务的用户需要 主动发起的, 因此, 集群业务的用户也需要登陆业务请求服务策略和资源分配。
SPDF、 A- RACF都需要识别用户发来的集群组创建请求, 在创建预留通道的过程中还 需为每个集群组创建一个广播表,每当有一个用户加入到该集群组时为该用户分配预留 资源(或共享资源)且向属性表添加该用户, 通知 RCEF添加广播表, 当有一个用户获得 集群业务的发送能力时, RCEF会将从该用户收到的报文都复制给集群中的其他用户, 当 有一个用户离开该集群组时, 向属性表(即广播表)删除该用户, 且释放该用户独占的 资源, 通知 RCEF更新广播表。
为了更为有效地利用集群功能, RCEF需要具备分配多个用户共享的预留通道(或共 享通道) 的能力和将集群组数据复制到该通道的能力。
当接入网有大于一个用户加入到同一集群组中, RCEF需要通过 Ra' 接口通知 A- RCEF 创建集群组的广播表, 并从 RCEF复制该属性表和为用户分配预留 (或共享)资源(或通 道)。 A-RCEF对集群用户发起的报文和针对集群用户的管理的处理流程和在 RCEF上采用 的处理流程相同, 也需要具备多个集群用户分配共享通道的能力。
综上所述, 本发明的实现为管理和控制接入网系统提供了有效的实现方案, 通过本 发明提供的接入网资源控制实现方案可以解决用户到 IP Edge的服务质量无法控制的问 题, 实现用户的端到端的服务质量保证。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到的变化或替 换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应该以权利要求的保 护范围为准。

Claims

权利 要求
1、 一种实现接入网控制的系统, 包括接入网和 IP边缘, 其特征在于, 所述的接入 网中设置有接入网资源控制执行功能实体,且所述的接入网资源控制执行功能实体提供 与 IP边缘中的资源控制执行功能 RCEF实体通信的接口,通过该接口所述的接入网资源控 制执行功能实体将收集的接入网的拓扑信息上报给所述的 RCEF实体,并接收 RCEF实体下 发的资源控制策略, 对各个节点的资源进行控制。
2、 根据权利要求 1所述的实现接入网控制的系统, 其特征在于, 所述的接入网资源 控制执行功能实体包括拓扑信息收集模块和资源控制策略执行模块, 其中:
拓扑信息收集模块: 用于收集接入网中各个节点的拓扑信息, 并通过所述接口发送 给 RCEF实体;
资源控制策略执行模块: 接收 RCEF实体下发的资源控制策略或资源控制命令, 并根 据所述的资源控制策略或资源控制命令对节点的资源进行控制管理。
3、 根据权利要求 1所述的实现接入网控制的系统, 其特征在于, 所述的拓扑信息包 括: 接入网中各个节点的连通性、 端口属性、 用户设备在接入网的各个节点的链路信息 和 /或接入网中的各个节点的通信地址。
4、 根据权利要求 1、 2或 3所述的实现接入网控制的系统, 其特征在于, 所述的 RCEF 实体包括接入网拓扑信息保存模块和接入网资源控制策略处理模块, 其中:
接入网拓扑信息保存模块,用于保存接入网资源控制执行功能实体发送来的接入网 中各个节点的拓扑信息, 并提供给接入网资源控制策略处理模块;
接入网资源控制策略处理模块,用于根据所述的拓扑信息确定针对各个节点的资源 控制策略, 并下发给接入网资源控制执行功能实体。
5、 根据要求 4所述的实现接入网控制的系统, 其特征在于, 所述的接入网拓扑信息 保存模块保存的信息包括根据各个节点的拓扑信息确定的以下信息中的至少一项- 用户直接二层节点相连的链路信息、 RCEF与接入网资源控制执行功能实体直接相 连的端口属性, 以及 RCEF与接入网资源控制执行功能实体的通信地址间的关联关系。
6、 一种实现接入网控制的方法, 其特征在于, 包括:
设置于接入网中的接入网资源控制执行功能实体收集接入网的拓扑信息,并上报给 RCEF实体;
RCEF实体根据所述的接入网的拓扑信息确定接入网中的资源控制策略, 并下发给接 入网资源控制执行功能实体; 接入网资源控制执行功能实体根据所述的资源控制策略对接入网中节点的资源进 行控制管理。
7、 根据权利要求 6所述的实现接入网控制的方法, 其特征在于, 所述的接入网的拓 扑信息包括- 接入网中各个节点的连通性、 端口属性、用户设备在接入网的各个节点的链路信息 和 /或接入网中各节点的通信地址信息。
8、 根据权利要求 6或 7所述的实现接入网控制的方法, 其特征在于, 当用户登录网 络时, 所述的确定接入网中的资源控制策略的处理具体包括:
RCEF获得用户的登录信息后, 根据保存的接入网的拓扑信息确定用户的地址信息、 链路信息和服务策略信息作为所述资源控制策略;
且所述的对接入网中节点的资源进行控制管理的处理包括:
接入网资源控制执行功能实体将所述的用户的地址信息、链路信息和服务策略信息 下发给各个节点, 控制该用户在各个节点上的资源 ¾"用。
9、 根据权利要求 8所述的实现接入网控制的方法, 其特征在于, 当用户离开网时, 所述的方法还包括:
RCEF通知接入网资源控制执行功能实体发送资源释放请求;
接入网资源控制执行功能实体根据收到的请求消息释放相应的资源, 并向 RCEF返回 资源释放成功消息。
10、 根据权利要求 6或 7所述的实现接入网控制的方法, 其特征在于, 所述的确定接 入网中的资源控制策略的处理具体包括- 用户登录业务后,应用功能 AF向接入网资源接入控制功能 A-RACF发送业务的服务策 略和业务提供点的地址信息;
A:RACF根据所述业务的服务策略确定用户的服务策略, 并将业务的服务策略随用户 地址信息一起下发给 RCEF, 作为所述的资源控制策略;
且所述的对接入网中节点的资源进行控制管理的处理包括:
接入网资源控制执行功能实体获取 RCEF根据用户地址下发的服务策略, 并进行所述 用户在接入网各个节点的服务策略的更新。
11、根据权利要求 10所述的实现接入控制的方法,其特征在于, 当用户离开业务时, 所述的方法还包括:
AF向 A- RACF发送离开用户申请的业务的服务策略信息, 并由 A- RACF向 RCEF发送释放 资源请求消息;
RCEF将所述释放资源请求消息继续下发给接入网资源控制执行功能实体,接入网资 源控制执行功能实体根据所述业务的服务策略更新用户在接入网各个节点的服务策略。
12、 一种多播业务控制方法, 其特征在于, 包括:
在接入网资源控制执行功能实体上, 针对多播业务启动多播业务复制功能, 并记录 用户加入或离开组播组的情况;
根据组播组中用户加入或离开的情况对启动的多播业务复制功能进行控制更新。
13、 根据权利要求 12所述的多播业务控制方法, 其特征在于, 所述的记录用户加入 或离开组播组的情况的处理具体包括:
接入网资源控制执行功能实体首次收到组播业务请求消息时, 为该组播业务创建计 数器, 并且, 当用户加入该组播组时,计数器加 1, 当用户离开该组播组时, 计数器减 1。
14、 根据权利要求 12或 13所述的多播业务控制方法, 其特征在于, 所述的方法还包 括: 接入网资源控制执行功能实体接收 RCEF发来的多播控制信令, 并根据接收到的多播 控制信令对多播业务占用的接入网资源进行控制管理。
15、 一种集群业务控制方法, 其特征李于, 包括:
接入网资源控制执行功能实体创建集群组, 并为相应的集群组分配广播表, 为各用 户分配预留资源;
接入网资源控制执行功能实体根据分配广播表和预留资源控制接入网用户开展集 群业务。
16、 根据权利要求 15所述的集群业务控制方法, 其特征在于, 所述的方法还包括: 接入网资源控制执行功能实体根据从 RCEF接收到的集群控制信令对所述的广播表 及各用户占用的资源进行控制管理。
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