WO2012083729A1 - 组播预览业务的传输方法及装置 - Google Patents

组播预览业务的传输方法及装置 Download PDF

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Publication number
WO2012083729A1
WO2012083729A1 PCT/CN2011/079334 CN2011079334W WO2012083729A1 WO 2012083729 A1 WO2012083729 A1 WO 2012083729A1 CN 2011079334 W CN2011079334 W CN 2011079334W WO 2012083729 A1 WO2012083729 A1 WO 2012083729A1
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WIPO (PCT)
Prior art keywords
multicast
management object
preview
attributes
service
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PCT/CN2011/079334
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English (en)
French (fr)
Inventor
张德智
曾涛
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中兴通讯股份有限公司
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Priority to EP11852136.8A priority Critical patent/EP2658185B1/en
Publication of WO2012083729A1 publication Critical patent/WO2012083729A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q11/0067Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/0001Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062Network aspects
    • H04Q2011/0064Arbitration, scheduling or medium access control aspects

Definitions

  • the present invention relates to the field of GPON (Gigabit Passive Optical Network) communication, and in particular to a method and device for transmitting a multicast preview service.
  • GPON Gigabit Passive Optical Network
  • GPON is a broadband access technology that provides a variety of integrated services using point-to-multipoint network architecture, passive optical fiber transmission, and GEM (GPON Encapsulation Method) frame encapsulation.
  • GPON consists of three parts: the OLT (Optical Line Terminal), the ONU (Optical Network Unit), and the Optical Distribution Network (ODN).
  • OLT Optical Line Terminal
  • ONU Optical Network Unit
  • ODN Optical Distribution Network
  • a Gem port (GEM encapsulated port) is a logical channel carried by a GPON service.
  • the Gem port has multiple mapping modes, which can be associated with user ports, VLAN IDs, and Ethernet priorities.
  • a 0NU can support the configuration of multiple Gem ports, including the unicast Gem port and the multicast Gem port.
  • the multicast Gem port can be received by all the 0NUs to which the multicast group belongs to the P0N interface. Through the unicast Gem port identifier, the downlink multicast data packet is sent to all ONUs through the multicast Gemport using SCB (single copy broadcast), and the multicast service distribution control point is on the ONU device.
  • SCB single copy broadcast
  • the control method defined by the existing GPON international standard ITU-T G984.4 is a distributed protocol control method pre-issued by the permission table. That is, the 0LT sets the multicast permission control table of the ONU device (the multicast channel list that the user can access) through the OMCI (ONT Management and Control Interface) management control interface, and associates it with the user port to perform service configuration.
  • OMCI ONT Management and Control Interface
  • IGMP Snooping Internet Group Management
  • MOP Multicast operation profile
  • MOP Multicast operation profile
  • the control information provided by the SP for the multicast service is stored in the dynamic access control list table of the MOP management object; and the multicast protocol and version used by the user;
  • MSC Multicast Subscriber Control
  • Management object because the MSC can only point to one MOP at present. Management object. Therefore, when configuring a multicast policy, for a UNI (User network interface) port, only one MSC and one MOP management object can be configured to cover the multicast provided by all SPs owned by the UNI user. Service control parameters. This brings up several problems:
  • the MSC cannot address the dual configuration requirements because it points to a single MOP.
  • the SP multicast service configuration data exists in different MOP management objects corresponding to the UNI. If the SP performs the multicast service policy adjustment and needs to modify the data in the MOP, the OLT needs to communicate with the ONU multiple times to modify all related MOP management objects involved in the UNI interface. For example, the 32UNI port in the MDU is on-demand.
  • the SP multicast service changes the SP multicast service control parameters, and at least the OLT and the ONU exchange 32 OMCI messages for modification.
  • the mechanism has a large amount of messages, which is slow and wastes resources and time.
  • a primary object of the present invention is to provide a method and apparatus for transmitting a multicast preview service to solve at least the above problems.
  • a method for transmitting a multicast preview service includes: searching an attribute carried in a multicast join request message in an attribute of a management object and/or a management object in a predetermined order, where
  • the attributes of the foregoing management object and/or management object include at least one of the following: a multicast operation template (MOP), an authorization group of an extended multicast operation template (EMOP), and a multicast pre-multicast user control (MSC)- The preview group of the EMOP; forwards or stops forwarding the service requested by the multicast join request message to the user according to the search result.
  • MOP multicast operation template
  • EMOP authorization group of an extended multicast operation template
  • MSC multicast pre-multicast user control
  • the step of searching for attributes carried in the multicast join request message in the attributes of the management object and/or the management object according to the predetermined order includes: sequentially in the above MOP, the authorization group of the above EMOP, the above multicast preview allow list, and Look for the above attributes in the preview group of the above EMOP.
  • the above attributes refer to: the service-related attributes carried in the multicast join request packet.
  • the step of searching for the foregoing attribute in the MOP includes: searching for the foregoing attribute in the MOP; and if the attribute is found, forwarding the service to the user.
  • the step of searching for the foregoing attribute in the authorization group of the EMOP includes: searching for the foregoing attribute in the multicast service package table of the MSC; if found, obtaining the attribute related to the service according to the EMOP management object instance pointer in the above attribute; If the obtained attribute is an authorization, the foregoing service is forwarded to the above user.
  • the step of searching for the foregoing attribute in the multicast preview permission table includes: searching for the foregoing attribute in the multicast preview permission table; if found, forwarding the service to the user.
  • the step of searching for the foregoing attribute in the preview group of the EMOP includes: searching for the foregoing attribute in the multicast service package table of the MSC; if found, obtaining the attribute related to the service according to the EMOP management object instance pointer in the above attribute; If the above attribute is a preview, the above service is forwarded to the above user.
  • the step of searching for the above attributes includes: finding a multicast program corresponding to the VID and/or the source IP address in the above service package.
  • the method further includes: the OLT configuring the attributes of the management object and/or the management object in the ONU; And the operation of searching for the attribute carried in the multicast join request message in the attribute of the management object and/or the management object in the predetermined order.
  • the step of the OLT configuring the attributes of the foregoing management object and/or the management object in the ONU includes: adding a multicast service package table to the multicast user control MSC management object, where the multicast service package table includes mutual mapping relationship The source IP address entry, the VID entry, and the pointer entry.
  • the pointer entry records the pointer to the MOP management object instance or the EMOP management object instance.
  • the step of the OLT configuring the attributes of the management object and/or the management object in the ONU further includes: adding a multicast preview permission table to the multicast user control management object, where the multicast preview permission table includes The source IP address entry, the destination IP address entry, and the VID entry of the mutual mapping relationship are set to record the preview multicast channel list that the current II port allows preview.
  • the OLT further includes: the OLT modifying the attributes of the management object and/or the management object configured in the ONU through the management channel.
  • the step of the OLT modifying the attributes of the management object and/or the management object configured in the ONU through the management channel includes at least one of the following: creating and/or deleting the EMOP indicated by the management channel in the multicast preview permission table of the MSC management object. Administering an entry of the object instance; or creating and/or deleting a pointer to the EMOP management object instance indicated by the OMCI command in the pointer table entry in the multicast service package table of the MSC management object.
  • the attributes of the foregoing management object and/or management object include: a pointer to the MOP management object instance and/or the EMOP management object instance, each of the above-mentioned MOP management object instance pointers and/or EMOP management object instances corresponding to at least one multicast service , multicast service package table, multicast preview allow table.
  • a transmission apparatus for a multicast preview service comprising: a search unit configured to look up a multicast join request message in an attribute of a management object and/or a management object in a predetermined order
  • the attribute carried in the management object and/or the management object includes at least one of the following: a multicast operation template MOP, an authorization group of the extended multicast operation template EMOP, and a multicast preview of the multicast user control MSC
  • the permission group, the preview group of the EMOP, and the transmission unit are configured to forward or stop forwarding the service requested by the multicast join request message to the user according to the search result of the search unit.
  • the multicast service of multiple SPs can be effectively controlled, and the solution is solved.
  • the problem of managing multiple multicast services of multiple SPs is improved, and the multicast control method is improved to support configuration management of multiple SP multicast services in the foregoing devices.
  • the technical effects of supporting new services such as new multicast preview are realized.
  • FIG. 1 is a preferred flowchart of a method for controlling a multicast service according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a control system for a multicast service according to an embodiment of the present invention
  • - BEST MODE FOR CARRYING OUT THE INVENTION the present invention will be described in detail with reference to the accompanying drawings.
  • FIG. 1 is a preferred flowchart of a method for controlling a multicast service according to an embodiment of the present invention, which includes:
  • S102 Search for attributes carried in the multicast join request message in the attributes of the management object and/or the management object in a predetermined order, where the attributes of the management object and/or the management object include at least one of the following: a template (MOP), an authorization group of an extended multicast operation template (EMOP), a multicast preview permission table of a multicast user control (MSC), and a preview group of an EMOP; S104, forwarding or stopping forwarding the above multicast join request according to the search result
  • MOP template
  • EMOP extended multicast operation template
  • MSC multicast preview permission table of a multicast user control
  • S104 forwarding or stopping forwarding the above multicast join request according to the search result
  • the service requested by the message is given to the user.
  • the multicast service of multiple SPs can be effectively controlled.
  • the step of searching for the attribute carried in the multicast join request message in the attribute of the management object and/or the management object according to the predetermined order includes: sequentially, in the foregoing MOP, the authorization group of the foregoing EMOP, and the foregoing multicast preview permission Look for the above properties in the table, and in the preview group above EMOP.
  • the desired attributes can be quickly and accurately found by the above sequence.
  • the foregoing attribute refers to: a service-related attribute carried in the multicast join request message.
  • the step of searching for the foregoing attribute in the MOP includes: searching for the foregoing attribute in the MOP; and if the attribute is found, forwarding the service to the user.
  • the step of searching for the foregoing attribute in the authorization group of the EMOP includes: searching for the foregoing attribute in the multicast service package table of the MSC; if found, obtaining the service related information according to the EMOP management object instance pointer in the foregoing attribute. Attribute; if the obtained attribute is authorized, the above service is forwarded to the above user.
  • the authorization is used to determine whether to send the service to the user, thereby increasing the flexibility of configuration and transmission.
  • the step of searching for the foregoing attribute in the multicast preview permission table includes: searching for the foregoing attribute in the multicast preview permission table; and if found, forwarding the service to the user.
  • the multicast preview permission table is used to determine whether the user is allowed to perform service preview, and the control of the preview service is implemented.
  • the step of searching for the foregoing attribute in the preview group of the EMOP includes: searching for the foregoing attribute in the multicast service package table of the MSC; if found, obtaining the service related information according to the EMOP management object instance pointer in the foregoing attribute. Attribute; If the above attribute is a preview, the above service is forwarded to the above user.
  • the multicast service packet table of the MSC is used to determine whether the user is allowed to perform service preview, and the control of the preview service is implemented.
  • the step of searching for the above attributes comprises: finding a multicast program corresponding to the VID and/or the source IP address in the service package.
  • the method before searching for the attributes carried in the multicast join request message in the attributes of the management object and/or the management object, the method further includes: the OLT configuring the attributes of the management object and/or the management object in the ONU; The ONU receives the multicast join request message. The ONU performs an operation of searching for an attribute carried in the multicast join request message in the attributes of the management object and/or the management object in a predetermined order.
  • the step of configuring, by the OLT, the attributes of the foregoing management object and/or the management object in the ONU includes: adding a multicast service package table in the multicast user control MSC management object, where the foregoing multicast service package table includes mutual The source IP address entry, the VID entry, and the pointer entry of the mapping relationship.
  • the pointer entry records the foregoing pointer to the MOP management object instance or the EMOP management object instance.
  • the step of the OLT configuring the attributes of the management object and/or the management object in the ONU further includes: adding a multicast preview permission table to the multicast user control management object, where the multicast preview permission table includes The source IP address entry, the destination IP address entry, and the VID entry of the mapping relationship are set to record the preview multicast channel list that the current UNI port allows preview.
  • the technical effect of supporting new services such as new multicast preview is realized by adding configuration parameters related to the multicast service preview.
  • the method for transmitting the multicast preview service further includes: the OLT modifying the attributes of the management object and/or the management object configured in the ONU through the management channel.
  • the management channel can make OMCI commands and the like.
  • the step of the OLT modifying the attributes of the management object and/or the management object configured in the ONU through the management channel includes at least one of the following: creating and/or deleting the management channel in the multicast preview permission table of the MSC management object.
  • An entry of the indicated EMOP management object instance; or on the MSC management object above A pointer to an EMOP management object instance indicated by the OMCI command is created and/or deleted in a pointer entry in the multicast service package table.
  • the attributes of the management object and/or the management object include: a pointer to the MOP management object instance and/or the EMOP management object instance, and each of the foregoing MOP management object instance pointers and/or EMOP management object instances corresponds to at least one Multicast service, multicast service packet table, multicast preview allow table.
  • FIG. 2 is a schematic structural diagram of a control system for a multicast service according to an embodiment of the present invention, which includes: a searching unit 202 configured to search for attributes of a management object and/or a management object in a predetermined order.
  • An attribute carried in the multicast join request packet where the attributes of the management object and/or the management object include at least one of the following: a multicast operation template (MOP), an authorization group of an extended multicast operation template (EMOP),
  • MSC multicast preview of the multicast user control
  • the transmission unit 204 is configured to forward or stop forwarding the service requested by the multicast join request message to the user according to the search result.
  • the searching unit 202 searches for attributes carried in the multicast join request message in the attributes of the management object and/or the management object in the following order: sequentially in the above MOP, the authorization group of the above EMOP, and the above multicast preview permission Look for the above properties in the table, and in the preview group above EMOP.
  • the desired attributes can be quickly and accurately found by the above sequence.
  • the foregoing attribute refers to: a service-related attribute carried in the multicast join request message.
  • the searching unit 202 includes: a first searching module, configured to search for the foregoing attribute in the MOP; and if the attribute is found, notify the transmitting unit 204 to forward the service to the user.
  • the searching unit 202 includes: a second searching module, configured to: search for the foregoing attribute in the multicast service package table of the MSC; if found, obtain the foregoing service related attribute according to the EMOP management object instance pointer in the foregoing attribute; If the acquired attribute is an authorization, the notification transmission unit 204 forwards the foregoing service to the above-mentioned user.
  • the authorization is used to determine whether to send the service to the user, thereby increasing the flexibility of configuration and transmission.
  • the searching unit 202 includes: a third searching module, configured to: search for the foregoing attribute in the multicast preview permission table: searching for the foregoing attribute in the multicast preview permission table; and if not, notifying the transmission unit 204 forwards the foregoing service to the above user.
  • the multicast preview permission table is used to determine whether the user is allowed to perform service preview, and the control of the preview service is implemented.
  • the searching unit 202 includes: a fourth searching module, configured to: search for the foregoing attribute in the multicast service package table of the MSC; if found, obtain the service related attribute according to the EMOP management object instance pointer in the foregoing attribute; If the above attribute is a preview, the notification transmission unit 204 forwards the above service to the above-mentioned user.
  • the multicast service packet table of the MSC is used to determine whether the user is allowed to perform service preview, and the control of the preview service is implemented.
  • the specific step of the searching unit 202 searching for the foregoing attribute comprises: searching for a multicast program corresponding to the VID and/or the source IP address in the service package.
  • the control system of the multicast service further includes: the OLT in the ONU Configuring the attributes of the management object and/or the management object; the ONU receives the multicast join request message; wherein, the ONU performs the search for the multicast join request message in the attributes of the management object and/or the management object in a predetermined order.
  • the step of configuring, by the OLT, the attributes of the foregoing management object and/or the management object in the ONU includes: adding a multicast service package table in the multicast user control MSC management object, where the foregoing multicast service package table includes mutual The source IP address entry, the VID entry, and the pointer entry of the mapping relationship.
  • the pointer entry records the foregoing pointer to the MOP management object instance or the EMOP management object instance.
  • the step of the OLT configuring the attributes of the management object and/or the management object in the ONU further includes: adding a multicast preview permission table to the multicast user control management object, where the multicast preview permission table includes The source IP address entry, the destination IP address entry, and the VID entry of the mapping relationship are set to record the preview multicast channel list that the current UNI port allows preview.
  • the technical effect of supporting new services such as new multicast preview is realized by adding configuration parameters related to the multicast service preview.
  • the method for transmitting the multicast preview service further includes: the OLT modifying the attributes of the management object and/or the management object configured in the ONU through the management channel.
  • the management channel can make OMCI commands and the like.
  • the step of the OLT modifying the attributes of the management object and/or the management object configured in the ONU through the management channel includes at least one of the following: creating and/or deleting the management channel in the multicast preview permission table of the MSC management object.
  • the attributes of the management object and/or the management object include: a pointer to the MOP management object instance and/or the EMOP management object instance, and each of the foregoing MOP management object instance pointers and/or EMOP management object instances corresponds to at least one Multicast service, multicast service packet table, multicast preview allow table.
  • Embodiment 3 This embodiment is defined by the existing G988 OMCI standard management interface, and the OLT delivers the multicast service-related management information and the selection control information of the user UNI side multicast service access to the ONU side, and the ONU performs the user according to the configured related information. Access management control of the multicast protocol.
  • the OLT needs to configure parameters such as the multicast channel permission control table of the multicast service channel to the EMOP (Extended Multicast Operation Template) management object of the ONU: 1) In multicast In the channel permission control table, you can specify access rights (view or preview) for each multicast channel, and configure preview parameters related to preview permissions, including preview times, preview maximum duration, and preview minimum interval time;
  • EMOP Extended Multicast Operation Template
  • the ONU performs preview control according to the issued multicast permission control table
  • the MOP may correspond to a single multicast service channel, or may be configured to correspond to multiple multicast service channels provided by one SP, or may correspond to a multicast service channel provided by the operator to the user.
  • the OLT only needs to flexibly configure each channel parameter in the multicast channel permission control table; (the method only reflects part of the standard, but it is not complete and can be treated as prior art);
  • Multicast service package table Multicast service package table.
  • the table contains a list of one or more multicast service packages.
  • VID UNI
  • VID is represented by matching the virtual local network of the user (that is, the UNI port is connected). And the source IP address in the multicast message to find a pointer of the MOP management object related to the corresponding multicast service channel package;
  • Allowed preview groups table Multicast preview allow table.
  • a list of preview multicast group channels that the current UNI port allows preview is placed in the table. It can also represent a list of multicast service channels that the user has paid for viewing; the relevant channel can be identified by VID (ANI); (Other parameters that can represent the multicast service flow can also be used, and VID (AND unified identity) is used below.
  • VID ANI
  • Other parameters that can represent the multicast service flow can also be used, and VID (AND unified identity) is used below.
  • the ONU can query the related entries in order to find the corresponding multicast channel control parameters, and then forward the multicast service channel data according to this.
  • the preferred embodiment may perform the query in the following order: 1) the MOP management object pointed to by the Multicast operations profile pointer in the MSC (the list of multicast service channels in the original MOP object); if it matches, the processing is performed according to relevant parameters; If it is not found, it will be transferred to the next search;
  • the technical solution in the preferred embodiment performs the following improvements on the basis of maintaining the compatibility of the original G988 OMCI standard:
  • the ONU performs the multicast service control mechanism
  • SP2's multicast service provides preview function, users can purchase after previewing for a period of time; can also exit after purchase;
  • SP3's multicast service provides preview function, users can purchase after previewing for a period of time; Can also quit;
  • the SP4 multicast service provides a preview function, which can be purchased after previewing for a period of time; it can also be quit after purchase;
  • the management instance of the MSC management object associated with the user is MSC-1, and the user currently purchases the multicast service provided by SP2.
  • the OLT configures the following parameters in the ONU (MDU) through the OMCI channel:
  • the ONU searches for various permission groups of the MSC-1 management instance associated with the user. Broadcast permission control table;
  • the viewing permission of the SP2 multicast service is previewed; the OLT can modify the multicast rights control table in the ONU (MDU) by using the OMCI command to achieve the above service control function:
  • MSC-1 1) Delete the entry of the MSC management object instance MSC-1 in the Allowed preview groups table pointer entry pointing to EMOP-1; 2) Modify the Multicast service package table pointer entry in the MSC management object instance MSC-1, and add the pointer to EMOP- 1 entry.
  • the related entries in MSC-1 are as follows: Table 3 Multicast service package table entries in MSC-1
  • the ONU when the ONU (MDU) device receives the user IGMP request packet, the content includes the VID, the source IP address, and the SP2 to provide the multicast service request, the ONU searches for various permission groups of the MSC-1 management instance associated with the user. Broadcast permission control table;
  • the corresponding SP2 multicast service flow is forwarded to the user; the user can then preview the program according to the determined rule.
  • the operator sets the user's viewing right for the SP2 multicast service to allow viewing;
  • the multicast permission control table in the ONU (MDU) can be modified by the OMCI command to achieve the above service control functions:
  • the ONU when the ONU (MDU) device receives the user IGMP request message, the content includes the VID, the source IP address, and the SP3 to provide the multicast service request, the ONU searches for various permission groups of the MSC-1 management instance associated with the user. Broadcast permission control table;
  • the entry of the multicast activity profile pointer has another advantage, that is, the user port can be independently controlled for the multicast service when the multi-SP provides the multicast service separately. Limited by the original method, saving a lot of configuration messages.
  • the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device so that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or Multiple of these modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

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Description

组播预览业务的传输方法及装置 技术领域 本发明涉及 GPON (Gigabit Passive Optical Network, 以太无源光网络)通信领域, 具体而言, 涉及一种组播预览业务的传输方法及装置。 背景技术
GPON 是一种采用点到多点网络结构、 无源光纤传输方式、 基于 GEM ( GPON Encapsulation Method) 帧封装、 提供多种综合业务的宽带接入技术。 GPON由局端设 备 OLT (Optical Line Terminal光线路终端)、 用户端设备 ONU (Optical Network Unit 光网络单元) 和光分配网 ODN (Optical Distribute Network光分配网络) 三部分组成。 近年来随着 GPON技术的大规模应用,在 GPON上如何开展可控组播业务成为一个值 得研究的课题。
Gem port (GEM封装端口)是 GPON业务承载的一个逻辑通道。 Gem port有多种 映射方式, 可以与用户端口、 VLAN标识、 以太网优先级关联。 一个 0NU可以支持 配置多个 Gem port,包括单播 Gem port和组播 Gem port两种类型,其中组播 Gem port 可以被一个 P0N口下组播组所属的所有 0NU接收,上行组播协议报文通过单播 Gem port标识, 下行组播数据报文通过组播 Gemport采用 SCB (单拷贝广播) 方式发送给 所有 0NU, 组播业务分发控制点在 0NU设备上。 目前现有 GPON国际标准 ITU-T G984.4定义的控制方式是权限表预先下发的分布 式协议控制方式。 即 0LT通过 OMCI (ONT Management and Control Interface)管理控 制接口设置 ONU设备的组播权限控制表 (用户可以访问的组播频道列表), 并关联到 用户端口上, 进行业务配置。 0NU运行 IGMP Snooping (Internet Group Management
Protocol互联网组管理协议), 当用户请求的组播组在组播权限控制表中, 允许用户加 入, 否则, 拒绝用户加入, 从而达到过滤非法组播数据的目的。 随着运营商业务的不断开放, 以及设备的平台化, 不断有新的独立业务提供商 SP ( Service Provider) 给终端用户提供各种类型的组播业务。 因此需要扩展现有的控制 协议, 支持终端用户通过接入系统, 从而多个 SP所提供的业务群中, 选择自己所需 要的业务进行购买观看。 目前对于 PON口上联并含多 UM (User Network Interface, 用户网络接口) 接口 的设备, G988 OMCI标准中定义了两个管理对象来进行管理控制:
1 ) MOP (Multicast operations profile, 组播操作模板) 管理对象: 存储各种组播 控制策略。 比如 SP提供组播业务的控制信息存储在 MOP管理对象的动态访问控制列 表 (Dynamic access control list table) 中; 以及用户使用的组播协议及版本等;
2) MSC (Multicast subscriber Control, 组播用户控制) 管理对象: 存储设备中各 个 UNI口相关的控制参数和一个指向 MOP管理对象的指针; 在具体管理使用中, 因为 MSC中目前只能指向一个 MOP管理对象, 因此在配置 组播策略时对于一个 UNI (User network interface, 用户网络接口) 口, 只能以一个 MSC和一个 MOP的管理对象配置涵盖该 UNI口用户所拥有的所有 SP提供的组播业 务控制参数。 这样就带来几个问题:
1 )如果该用户在 IPv4/v6共存的环境中,使用多个组播协议版本如 IGMPv3 (IPv4 环境使用) 和 MLDv2协议 (IPv6环境使用), 由于 MSC指向单个 MOP而无法满足 协议双重配置的需求; 2) 该设备的多个 UNI口同时使用某 SP提供的组播业务, 则该 SP组播业务配置 数据存在于不用 UNI所对应的不同 MOP管理对象中。如果 SP进行组播业务策略调整, 需要相应的修改 MOP中的数据时, 则 OLT需要和 ONU多次通信对所有涉及到 UNI 口的相关 MOP管理对象进行修改;比如 MDU中 32UNI口都点播了某 SP的组播业务, 则修改一个该 SP组播业务控制参数,也需要至少 OLT和 ONU交互 32条 OMCI消息, 进行修改。 该机制消息量比较大, 速度慢, 也很浪费资源和时间;
3 ) 原有 MOP的动态访问控制列表定义参数空间较少, 不能支持未来新业务比如 组播预览等的灵活运用和控制。 发明内容 本发明的主要目的在于提供一种组播预览业务的传输方法及装置, 以至少解决上 述问题。 根据本发明的一个方面, 提供了一种组播预览业务的传输方法, 其包括: 按照预 定顺序在管理对象和 /或管理对象的属性中查找组播加入请求报文中所携带的属性,其 中, 上述管理对象和 /或管理对象的属性包括以下至少之一: 组播操作模板 (MOP)、 扩展组播操作模板 (EMOP) 的授权组、 组播用户控制 (MSC) 的组播预 - EMOP的预览组; 按照查找结果转发或者停止转发上述组播加入请求报文所请求的业 务给用户。 按照预定顺序在管理对象和 /或管理对象的属性中查找与组播加入请求报文中所 携带的属性的步骤包括: 依次在上述 MOP、 上述 EMOP的授权组、 上述组播预览允 许表、 和上述 EMOP的预览组中查找上述属性。 上述属性指的是: 上述组播加入请求报文中所携带的业务相关的属性。 在上述 MOP中查找上述属性的步骤包括: 在上述 MOP中查找上述属性; 如果查 找到上述属性, 则转发上述业务给上述用户。 在上述 EMOP的授权组中查找上述属性的步骤包括: 在 MSC的组播业务包表中 查找上述属性; 如果查找到, 则按照上述属性中的 EMOP管理对象实例指针获取上述 业务相关的属性; 如果所获取的属性为授权, 则转发上述业务给上述用户。 在上述组播预览允许表中查找上述属性的步骤包括: 在上述组播预览允许表中查 找上述属性; 若查找到, 则转发上述业务给上述用户。 在上述 EMOP的预览组中查找上述属性的步骤包括: 在 MSC的组播业务包表中 查找上述属性; 如果查找到, 则按照上述属性中的 EMOP管理对象实例指针获取上述 业务相关的属性; 如果上述属性为预览, 则转发上述业务给上述用户。 查找上述属性的步骤包括: 查找与上述业务包中的 VID和 /或源 IP地址对应的组 播节目。 按照预定顺序在管理对象和 /或管理对象的属性中查找组播加入请求报文中所携 带的属性之前, 还包括: OLT在 ONU中配置上述管理对象和 /或管理对象的属性; 上 述 ONU接收上述组播加入请求报文; 其中, 由上述 ONU执行按照预定顺序在管理对 象和 /或管理对象的属性中查找组播加入请求报文中所携带的属性的操作。
OLT在 ONU中配置上述管理对象和 /或管理对象的属性的步骤包括: 在组播用户 控制 MSC 管理对象中增加组播业务包表, 其中, 上述组播业务包表中包含具有相互 映射关系的源 IP地址表项、 VID表项以及指针表项, 上述指针表项记录了上述指向 MOP管理对象实例或 EMOP管理对象实例的指针。
OLT在 ONU中配置上述管理对象和 /或管理对象的属性的步骤还包括: 在上述组 播用户控制管理对象中增加组播预览允许表, 其中, 上述组播预览允许表中包含具有 相互映射关系的源 IP地址表项、目的 IP地址表项以及 VID表项,设置为记录当前 I I 口允许预览的预览组播频道列表。
OLT在 ONU中配置上述管理对象和 /或管理对象的属性之后, 还包括: OLT通过 管理通道修改 ONU中配置的上述管理对象和 /或管理对象的属性。 OLT通过管理通道修改 ONU中配置的上述管理对象和 /或管理对象的属性的步骤 包括以下至少之一: 在上述 MSC管理对象的组播预览允许表中创建和 /或删除上述管 理通道指示的 EMOP管理对象实例的条目; 或者在上述 MSC管理对象的上述组播业 务包表中的指针表项中创建和 /或删除指向上述 OMCI命令指示的 EMOP管理对象实 例的指针。 上述管理对象和 /或管理对象的属性包括: 指向 MOP 管理对象实例和 /或 EMOP 管理对象实例的指针, 每个上述 MOP管理对象实例的指针和 /或 EMOP管理对象实例 对应于至少一个组播业务, 组播业务包表, 组播预览允许表。 根据本发明的另一个方面, 提供了一种组播预览业务的传输装置, 该装置包括: 查找单元, 设置为按照预定顺序在管理对象和 /或管理对象的属性中查找组播加入请求 报文中所携带的属性, 其中, 所述管理对象和 /或管理对象的属性包括以下至少之一: 组播操作模板 MOP、扩展组播操作模板 EMOP的授权组、 组播用户控制 MSC的组播 预览允许表、 EMOP的预览组; 传输单元, 设置为按照所述查找单元的查找结果转发 或者停止转发所述组播加入请求报文所请求的业务给用户。 在本发明中,通过按照预定顺序在管理对象和 /或管理对象的属性中查找组播加入 请求报文中所携带的属性, 可以有效地对多个 SP 的组播业务进行权限控制, 解决了 现有技术中无法对多个 SP 的组播业务进行管理的问题, 完善了组播控制方法, 以支 持上述设备中多 SP 组播业务的配置管理。 此外, 通过增加与组播业务预览相关的配 置参数, 实现了支持新组播预览等新业务的技术效果。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部分, 本发 明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的不当限定。 在附图 中: 图 1是根据本发明实施例的组播业务的控制方法的一种优选的流程图; 图 2是根据本发明实施例的组播业务的控制系统的一种优选的结构图- 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在不冲突的 情况下, 本申请中的实施例及实施例中的特征可以相互组合。 实施例 1 图 1是根据本发明实施例的组播业务的控制方法的一种优选的流程图, 其包括:
S102,按照预定顺序在管理对象和 /或管理对象的属性中查找组播加入请求报文中 所携带的属性, 其中, 上述管理对象和 /或管理对象的属性包括以下至少之一: 组播操 作模板(MOP)、 扩展组播操作模板(EMOP) 的授权组、 组播用户控制 (MSC) 的组 播预览允许表、 EMOP的预览组; S104, 按照查找结果转发或者停止转发上述组播加入请求报文所请求的业务给用 户。 在本优选的实施例中,通过按照预定顺序在管理对象和 /或管理对象的属性中查找 组播加入请求报文中所携带的属性, 可以有效地对多个 SP的组播业务进行权限控制, 解决了现有技术中无法对多个 SP的组播业务进行管理的问题, 完善了组播控制方法, 以支持上述设备中多 SP组播业务的配置管理。 优选地, 按照预定顺序在管理对象和 /或管理对象的属性中查找与组播加入请求报 文中所携带的属性的步骤包括: 依次在上述 MOP、 上述 EMOP的授权组、 上述组播 预览允许表、 和上述 EMOP的预览组中查找上述属性。 在本优选的实施例中, 通过上 述顺序可以快速准确地查找到所需的属性。 优选地, 上述属性指的是: 上述组播加入请求报文中所携带的业务相关的属性。 优选地,在上述 MOP中查找上述属性的步骤包括:在上述 MOP中查找上述属性; 如果查找到上述属性, 则转发上述业务给上述用户。 优选地, 在上述 EMOP的授权组中查找上述属性的步骤包括: 在 MSC的组播业 务包表中查找上述属性; 如果查找到, 则按照上述属性中的 EMOP管理对象实例指针 获取上述业务相关的属性; 如果所获取的属性为授权, 则转发上述业务给上述用户。 在本优选的实施例中, 通过授权来判断是否将业务发送给用户, 从而增加了配置和传 输的灵活性。 优选地, 在上述组播预览允许表中查找上述属性的步骤包括: 在上述组播预览允 许表中查找上述属性; 若查找到, 则转发上述业务给上述用户。在本优选的实施例中, 通过组播预览允许表来判断是否允许该用户进行业务预览,实现了对预览业务的控制。 优选地, 在上述 EMOP的预览组中查找上述属性的步骤包括: 在 MSC的组播业 务包表中查找上述属性; 如果查找到, 则按照上述属性中的 EMOP管理对象实例指针 获取上述业务相关的属性; 如果上述属性为预览, 则转发上述业务给上述用户。 在本 优选的实施例中, 通过 MSC 的组播业务包表来判断是否允许该用户进行业务预览, 实现了对预览业务的控制。 优选地, 查找上述属性的步骤包括: 查找与上述业务包中的 VID和 /或源 IP地址 对应的组播节目。 优选地, 按照预定顺序在管理对象和 /或管理对象的属性中查找组播加入请求报文 中所携带的属性之前, 还包括: OLT在 ONU中配置上述管理对象和 /或管理对象的属 性; 上述 ONU接收上述组播加入请求报文; 其中, 由上述 ONU执行按照预定顺序在 管理对象和 /或管理对象的属性中查找组播加入请求报文中所携带的属性的操作。 优选地, OLT在 ONU中配置上述管理对象和 /或管理对象的属性的步骤包括: 在 组播用户控制 MSC 管理对象中增加组播业务包表, 其中, 上述组播业务包表中包含 具有相互映射关系的源 IP地址表项、 VID表项以及指针表项, 上述指针表项记录了上 述指向 MOP管理对象实例或 EMOP管理对象实例的指针。 优选地, OLT在 ONU中配置上述管理对象和 /或管理对象的属性的步骤还包括: 在上述组播用户控制管理对象中增加组播预览允许表, 其中, 上述组播预览允许表中 包含具有相互映射关系的源 IP地址表项、 目的 IP地址表项以及 VID表项, 设置为记 录当前 UNI口允许预览的预览组播频道列表。 在本优选的实施例中, 通过增加与组播 业务预览相关的配置参数, 实现了支持新组播预览等新业务的技术效果。 优选地, OLT在 ONU中配置上述管理对象和 /或管理对象的属性之后, 组播预览 业务的传输方法还包括: OLT通过管理通道修改 ONU中配置的上述管理对象和 /或管 理对象的属性。 优选的, 管理通道可以使 OMCI命令等。 优选地, OLT通过管理通道修改 ONU中配置的上述管理对象和 /或管理对象的属 性的步骤包括以下至少之一: 在上述 MSC管理对象的组播预览允许表中创建和 /或删 除上述管理通道指示的 EMOP管理对象实例的条目; 或者在上述 MSC管理对象的上 述组播业务包表中的指针表项中创建和 /或删除指向上述 OMCI命令指示的 EMOP管 理对象实例的指针。 优选地, 上述管理对象和 /或管理对象的属性包括: 指向 MOP管理对象实例和 /或 EMOP管理对象实例的指针, 每个上述 MOP管理对象实例的指针和 /或 EMOP管理对 象实例对应于至少一个组播业务, 组播业务包表, 组播预览允许表。 实施例 2 图 2是根据本发明实施例的组播业务的控制系统的一种优选的结构图, 其包括: 查找单元 202, 设置为按照预定顺序在管理对象和 /或管理对象的属性中查找组播加入 请求报文中所携带的属性, 其中, 上述管理对象和 /或管理对象的属性包括以下至少之 一:组播操作模板(MOP)、扩展组播操作模板(EMOP)的授权组、组播用户控制(MSC) 的组播预览允许表、 EMOP的预览组; 传输单元 204, 设置为按照查找结果转发或者 停止转发上述组播加入请求报文所请求的业务给用户。 在本优选的实施例中,通过按照预定顺序在管理对象和 /或管理对象的属性中查找 组播加入请求报文中所携带的属性, 可以有效地对多个 SP的组播业务进行权限控制, 解决了现有技术中无法对多个 SP的组播业务进行管理的问题, 完善了组播控制方法, 以支持上述设备中多 SP组播业务的配置管理。 优选地, 查找单元 202按照以下顺序在管理对象和 /或管理对象的属性中查找与组 播加入请求报文中所携带的属性: 依次在上述 MOP、 上述 EMOP的授权组、 上述组 播预览允许表、 和上述 EMOP的预览组中查找上述属性。 在本优选的实施例中, 通过 上述顺序可以快速准确地查找到所需的属性。 优选地, 上述属性指的是: 上述组播加入请求报文中所携带的业务相关的属性。 优选地, 查找单元 202包括: 第一查找模块, 设置为在上述 MOP中查找上述属 性; 如果查找到上述属性, 则通知传输单元 204转发上述业务给上述用户。 优选地, 查找单元 202包括: 第二查找模块, 设置为在 MSC的组播业务包表中 查找上述属性; 如果查找到, 则按照上述属性中的 EMOP管理对象实例指针获取上述 业务相关的属性; 如果所获取的属性为授权, 则通知传输单元 204转发上述业务给上 述用户。 在本优选的实施例中, 通过授权来判断是否将业务发送给用户, 从而增加了 配置和传输的灵活性。 优选地, 查找单元 202包括: 第三查找模块, 设置为在上述组播预览允许表中查 找上述属性的步骤包括: 在上述组播预览允许表中查找上述属性; 若查找到, 则通知 传输单元 204转发上述业务给上述用户。 在本优选的实施例中, 通过组播预览允许表 来判断是否允许该用户进行业务预览, 实现了对预览业务的控制。 优选地, 查找单元 202包括: 第四查找模块, 设置为在 MSC的组播业务包表中 查找上述属性; 如果查找到, 则按照上述属性中的 EMOP管理对象实例指针获取上述 业务相关的属性; 如果上述属性为预览, 则通知传输单元 204转发上述业务给上述用 户。 在本优选的实施例中, 通过 MSC 的组播业务包表来判断是否允许该用户进行业 务预览, 实现了对预览业务的控制。 优选地,查找单元 202查找上述属性的具体步骤包括:查找与上述业务包中的 VID 和 /或源 IP地址对应的组播节目。 优选地, 按照预定顺序在管理对象和 /或管理对象的属性中查找组播加入请求报文 中所携带的属性之前,根据本发明实施例的组播业务的控制系统还包括: OLT在 ONU 中配置上述管理对象和 /或管理对象的属性; 上述 ONU接收上述组播加入请求报文; 其中, 由上述 ONU执行按照预定顺序在管理对象和 /或管理对象的属性中查找组播加 入请求报文中所携带的属性的操作。 也就是说, 根据本发明实施例的组播业务的控制 系统可以位于 ONU上。 优选地, OLT在 ONU中配置上述管理对象和 /或管理对象的属性的步骤包括: 在 组播用户控制 MSC 管理对象中增加组播业务包表, 其中, 上述组播业务包表中包含 具有相互映射关系的源 IP地址表项、 VID表项以及指针表项, 上述指针表项记录了上 述指向 MOP管理对象实例或 EMOP管理对象实例的指针。 优选地, OLT在 ONU中配置上述管理对象和 /或管理对象的属性的步骤还包括: 在上述组播用户控制管理对象中增加组播预览允许表, 其中, 上述组播预览允许表中 包含具有相互映射关系的源 IP地址表项、 目的 IP地址表项以及 VID表项, 设置为记 录当前 UNI口允许预览的预览组播频道列表。 在本优选的实施例中, 通过增加与组播 业务预览相关的配置参数, 实现了支持新组播预览等新业务的技术效果。 优选地, OLT在 ONU中配置上述管理对象和 /或管理对象的属性之后, 组播预览 业务的传输方法还包括: OLT通过管理通道修改 ONU中配置的上述管理对象和 /或管 理对象的属性。 优选的, 管理通道可以使 OMCI命令等。 优选地, OLT通过管理通道修改 ONU中配置的上述管理对象和 /或管理对象的属 性的步骤包括以下至少之一: 在上述 MSC管理对象的组播预览允许表中创建和 /或删 除上述管理通道指示的 EMOP管理对象实例的条目; 或者在上述 MSC管理对象的上 述组播业务包表中的指针表项中创建和 /或删除指向上述 OMCI命令指示的 EMOP管 理对象实例的指针。 优选地, 上述管理对象和 /或管理对象的属性包括: 指向 MOP管理对象实例和 /或 EMOP管理对象实例的指针, 每个上述 MOP管理对象实例的指针和 /或 EMOP管理对 象实例对应于至少一个组播业务, 组播业务包表, 组播预览允许表。 实施例 3 本实施例沿用现有 G988 OMCI标准管理接口定义, OLT下发组播业务相关管理 信息以及用户 UNI侧组播业务接入的选择控制信息到 ONU侧, ONU依据配置的相关 信息进行用户组播协议的接入管理控制。
1. 为支持多 SP组播业务的管理控制, OLT需要将组播业务频道的组播频道权限 控制表等参数配置到 ONU的 EMOP (扩展组播操作模板) 管理对象中: 1 ) 在组播频道权限控制表中可以为每个组播频道指定访问权限 (观看或预览), 并配置预览权限相关的预览参数, 包括预览次数、 预览最大持续时间、 预览最小间隔 时间;
2) ONU根据下发的组播权限控制表进行预览控制;
3 ) 另外在实际使用中, 该 MOP可以对应于单个组播业务频道, 也可以配置对应 于一个 SP所提供的多个组播业务频道, 也可以对应于运营商提供给用户的组播业务 频道包; 各种模式下, OLT只需要灵活配置组播频道权限控制表中的各个频道参数即 可; (该方式标准中仅仅体现了一部分, 但是不全, 可以作为现有技术处理);
4) 当然在原来的 MOP 中进行定义理论上也是可以的, 但是增加属性太多会使 MOP超过属性数目的限制, 所以这里用 EMOP进行说明。 2. 在 MSC (组播用户控制, Multicast Subscriber Control) 管理对象中, 添加两个 新的控制表项:
1 ) Multicast service package table: 组播业务包表。 该表中包含指向一个或者多个 组播业务包的列表。通过匹配用户 (即 UNI口所连接的)虚拟本地网表示 VID (UNI) 和组播消息中的源 IP地址来查找到对应的组播业务频道包相关的 MOP管理对象的指 针;
2) Allowed preview groups table: 组播预览允许表。 该表中放置了目前该 UNI口 允许预览的预览组播组频道列表。也可以表示用户已付费可观看的组播业务频道列表; 相关频道可以通过 VID (ANI)标识; (也可以使用其他可代表组播业务流的参数, 下 文用 VID (AND 统一标识)。
3. ONU在收到 IGMP或者 MLD协议中的请求消息时, 可以按顺序查询相关的各 个表项以找到对应的组播频道控制参数, 并据此进行组播业务频道数据的转发与否。 本优选的实施例可以按照以下顺序来进行查询: 1 )在 MSC中 Multicast operations profile pointer指向的 MOP管理对象(原始 MOP 对象中的组播业务频道列表); 匹配到则按照相关参数进行处理; 如未查找到, 则转入 下一项查找;
2)在 MSC中查找 Multicast service package table中匹配的 ΕΜΟΡ, 如匹配, 则并 搜寻该 ΕΜΟΡ其中包含的授权组播业务频道列表; 匹配到则按照相关参数进行处理; 如未查找到, 则转入下一项查找;
3 )在 MSC中查找 Allowed preview groups table, 如匹配到一个组播节目, 则转发 该组播业务流给用户; 如未查找到, 则转入下一项查找;
4)在 MSC中查找 Multicast service package table中匹配的 ΕΜΟΡ, 如匹配, 则并 搜寻该 ΕΜΟΡ其中包含的预览组播业务频道列表; 匹配到则按照相关参数进行处理; 如未查找到, 则认为全部查找失败, 拒绝用户的组播业务申请。 总的来说, 本优选实施例中的技术方案在保持原有 G988 OMCI标准兼容性的基 础上, 进行了以下改进:
1 ) 采用 OLT下放配置预览权限, ONU进行组播业务控制机制;
2) 新创建的业务权限表和相应的查询流程; 综合利用上述创新方案, 可以有效提供 FTTB模式下为 MDU提供组播预览业务 控制。 以下通过具体实例来描述本优选实施例的技术方案。 假设有四个组播业务提供商 SP1、 SP2、 SP3、 SP4, 其中:
1 ) SP1的组播业务是不需要用户申请就可以直接播放给用户观看的;
2) SP2的组播业务提供了预览功能, 用户可以在预览一段时间后购买; 购买后也 可退出; 3 ) SP3的组播业务提供了预览功能, 用户可以在预览一段时间后购买; 购买后也 可退出;
4) SP4的组播业务提供了预览功能, 用户可以在预览一段时间后购买; 购买后也 可退出;
5 )用户关联的 MSC管理对象的管理实例是 MSC-1 , 且用户当前购买了 SP2提供 的组播业务。 第一步, OLT通过 OMCI通道在 ONU (MDU) 中配置以下参数:
1 )创建 MOP管理对象实例 MOP-1, 并在 MOP-1配置 SP1提供的组播业务参数;
2) 创建 EMOP管理对象实例 EMOP-1 , 并在 EMOP-1中配置 SP2相关的组播业 务控制参 数 (含预览控制参数);
3 ) 创建 EMOP管理对象实例 EMOP-2, 并在 EMOP-2中配置 SP3相关的组播业 务控制参数 (含预览控制参数);
4) 创建 EMOP管理对象实例 EMOP-3 , 并在 EMOP-3中配置 SP4相关的组播业 务控制参数 (含预览控制参数); 5 ) 修改 MSC管理对象实例 MSC-1中的 Multicast operations profile pointer指针, 指向 MOP-1 ;
6)创建 MSC管理对象实例 MSC-1中的 Multicast service package table指针表项, 分别指向 EMOP-2和 EMOP-3 ;
7) 创建 MSC管理对象实例 MSC-1中的 Allowed preview groups table指针表项, 分别指向 SP2组播业务流的 VID ( AM)。 此时创建的表项如下所示: 表 1 MSC-1中 Multicast service package table表项
Figure imgf000014_0001
表 2 MSC-1中 Allowed preview groups table表项
Figure imgf000014_0002
第二步, 当 ONU (MDU) 设备接收到用户 IGMP请求报文, 内容包含 VID、 源 IP地址以及 SP2提组播业务请求时, ONU检索该用户关联的 MSC-1管理实例的各种 权限组播权限控制表;
1 ) 检索 Multicast operations profile pointer指针所指向的 MOP- 1, 未匹配到 VID 所指向的 SP2提供的组播业务, 继续下一步检索;
2)检索 Multicast service package table表项, 未能通过 VID和源 IP地址匹配到指 向 SP2相关的 EMOP-1的指针;
3 )检索 Allowed preview groups table表项,通过 VID和源 IP地址匹配到指向 SP2 相关的 EMOP-1的指针; 因为此时是在 Allowed preview groups table这个表中匹配到 的, 所以可忽略 EMOP-1管理对象实例中关于预览控制的相关参数, 转发相应 SP2组 播业务流给该用户; 用户从而可以观看节目。 第三步, 如用户取消了 SP2组播业务的观看权限, 运营商从而对恢复该用户对于
SP2组播业务的观看权限为预览; 则 OLT可以通过 OMCI命令修改 ONU (MDU) 中 的组播权限控制表, 以达到上述的业务控制功能:
1 )删除 MSC管理对象实例 MSC-1的 Allowed preview groups table指针表项中指 向 EMOP-1的条目; 2) 修改 MSC管理对象实例 MSC-1中的 Multicast service package table指针表项, 增加指向 EMOP-1的条目。 此时 MSC-1中的相关表项如下所示: 表 3 MSC-1中 Multicast service package table表项
Figure imgf000015_0001
表 4 MSC-1中 Allowed preview groups table表项
Figure imgf000015_0002
第四步, 当 ONU (MDU) 设备接收到用户 IGMP请求报文, 内容包含 VID、 源 IP地址以及 SP2提组播业务请求时, ONU检索该用户关联的 MSC-1管理实例的各种 权限组播权限控制表;
1 ) 检索 Multicast operations profile pointer指针所指向的 MOP- 1, 未匹配到 VID 所指向的 SP2提供的组播业务, 继续下一步检索;
2)检索 Multicast service package table表项,通过 VID和源 IP地址匹配到指向 SP2 相关的 EMOP-1的指针; 此时是在 Multicast operations profile pointer这个表中匹配到 的, 所以依据 EMOP-1管理对象实例中关于预览控制的相关参数, 转发相应 SP2组播 业务流给该用户; 用户从而可以按照确定的规则预览节目。 第五步, 如用户在预览了一段时间 SP3提供的组播业务之后并购买其组播业务的 观看权限, 运营商从而对设置该用户对于 SP2组播业务的观看权限为允许观看; 此时 OLT可以通过 OMCI命令修改 ONU (MDU) 中的组播权限控制表, 以达到上述的业 务控制功能:
1 ) 删除 MSC管理对象实例 MSC-1的 Multicast service package table指针表项中 指向 EMOP-2的条目;
2) 修改 MSC管理对象实例 MSC-1中的 Allowed preview groups table指针表项, 增加指向 EMOP-2的条目。 此时 MSC-1中的相关表项如下所示: 表 5 MSC-1中 Multicast service package table表项
Figure imgf000016_0001
表 6 MSC-1中 Allowed preview groups table表项
Figure imgf000016_0002
第六步, 当 ONU (MDU) 设备接收到用户 IGMP请求报文, 内容包含 VID、 源 IP地址以及 SP3提组播业务请求时, ONU检索该用户关联的 MSC-1管理实例的各种 权限组播权限控制表;
1 ) 检索 Multicast operations profile pointer指针所指向的 MOP- 1, 未匹配到 VID 所指向的 SP3提供的组播业务, 继续下一步检索;
2)检索 Multicast service package table表项, 未能通过 VID和源 IP地址匹配到指 向 SP3相关的 EMOP-2的指针;
3 )检索 Allowed preview groups table表项,通过 VID和源 IP地址匹配到指向 SP3 相关的 EMOP-2的指针; 因为此时是在 Allowed preview groups table这个表中匹配到 的, 所以可忽略 EMOP-2管理对象实例中关于预览控制的相关参数, 转发相应 SP3组 播业务流给该用户; 用户从而可以观看节目。 也可以将两张表合一, 只不过需要在表中每个条目中增加一个标识, 来说明该条 目是属于 Multicast operations profile pointer属性还是 Allowed preview groups table属 性。 这里不再赘述。 在本发明中, Multicast operations profile pointer的表项引入还有另外的一个好处, 就是扩展了用户端口在多 SP 分别提供组播业务的情况下, 可以独立对于组播业务进 行权限控制, 而不必再受限于原有的方式, 节约了大量的配置消息。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可以用通用 的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布在多个计算装置所 组成的网络上, 可选地, 它们可以用计算装置可执行的程序代码来实现, 从而可以将 它们存储在存储装置中由计算装置来执行,或者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。 这样, 本发明不限 制于任何特定的硬件和软件结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本领域的技 术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和原则之内, 所作的 任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种组播预览业务的传输方法, 包括:
按照预定顺序在管理对象和 /或管理对象的属性中查找组播加入请求报文 中所携带的属性,其中,所述管理对象和 /或管理对象的属性包括以下至少之一: 组播操作模板 MOP、 扩展组播操作模板 EMOP的授权组、 组播用户控制 MSC 的组播预览允许表、 EMOP的预览组;
按照查找结果转发或者停止转发所述组播加入请求报文所请求的业务给用 户。
2. 根据权利要求 1所述的方法, 其中, 按照预定顺序在管理对象和 /或管理对象的 属性中查找与组播加入请求报文中所携带的属性的步骤包括:
依次在所述 MOP、 所述 EMOP的授权组、 所述组播预览允许表、 和所述 EMOP的预览组中查找所述属性。
3. 根据权利要求 1所述的方法, 其中, 所述属性指的是: 所述组播加入请求报文 中所携带的业务相关的属性。
4. 根据权利要求 1所述的方法, 其中, 在所述 MOP中查找所述属性的步骤包括:
在所述 MOP中查找所述属性;
如果查找到所述属性, 则转发所述业务给所述用户。
5. 根据权利要求 1所述的方法, 其中, 在所述 EMOP的授权组中查找所述属性的 步骤包括:
在 MSC的组播业务包表中查找所述属性;
如果查找到,则按照所述属性中的 EMOP管理对象实例指针获取所述业务 相关的属性;
如果所获取的属性为授权, 则转发所述业务给所述用户。
6. 根据权利要求 1所述的方法, 其中, 在所述组播预览允许表中查找所述属性的 步骤包括:
在所述组播预览允许表中查找所述属性; 若查找到, 则转发所述业务给所述用户。
7. 根据权利要求 1所述的方法, 其中, 在所述 EMOP的预览组中查找所述属性的 步骤包括:
在 MSC的组播业务包表中查找所述属性;
如果查找到,则按照所述属性中的 EMOP管理对象实例指针获取所述业务 相关的属性;
如果所述属性为预览, 则转发所述业务给所述用户。
8. 根据权利要求 4至 7中任一项所述的方法, 其中, 查找所述属性的步骤包括: 查找与所述业务包中的 VID和 /或源 IP地址对应的组播节目。
9. 根据权利要求 1所述的方法, 其中, 按照预定顺序在管理对象和 /或管理对象的 属性中查找组播加入请求报文中所携带的属性之前, 还包括:
OLT在 ONU中配置所述管理对象和 /或管理对象的属性;
所述 ONU接收所述组播加入请求报文;
其中, 由所述 ONU执行按照预定顺序在管理对象和 /或管理对象的属性中 查找组播加入请求报文中所携带的属性的操作。
10. 根据权利要求 9所述的方法, 其中, OLT在 ONU中配置所述管理对象和 /或管 理对象的属性的步骤包括:
在组播用户控制 MSC管理对象中增加组播业务包表, 其中, 所述组播业 务包表中包含具有相互映射关系的源 IP地址表项、 VID表项以及指针表项,所 述指针表项记录了所述指向 MOP管理对象实例或 EMOP管理对象实例的指针。
11. 根据权利要求 9所述的方法, 其中, OLT在 ONU中配置所述管理对象和 /或管 理对象的属性的步骤还包括:
在所述组播用户控制管理对象中增加组播预览允许表, 其中, 所述组播预 览允许表中包含具有相互映射关系的源 IP地址表项、目的 IP地址表项以及 VID 表项, 设置为记录当前 UNI口允许预览的预览组播频道列表。
12. 根据权利要求 9所述的方法, 其中, OLT在 ONU中配置所述管理对象和 /或管 理对象的属性之后, 还包括: OLT 通过管理通道修改 ONU 中配置的所述管理对象和 /或管理对象的属 性。
13. 根据权利要求 12所述的方法, 其中, OLT通过管理通道修改 ONU中配置的所 述管理对象和 /或管理对象的属性的步骤包括以下至少之一:
在所述 MSC管理对象的组播预览允许表中创建和 /或删除所述管理通道指 示的 EMOP管理对象实例的条目; 或者
在所述 MSC管理对象的所述组播业务包表中的指针表项中创建和 /或删除 指向所述 OMCI命令指示的 EMOP管理对象实例的指针。
14. 根据权利要求 10至 13中任一项所述的方法, 其中, 所述管理对象和 /或管理对 象的属性包括: 指向 MOP管理对象实例和 /或 EMOP管理对象实例的指针, 每 个所述 MOP管理对象实例的指针和 /或 EMOP管理对象实例对应于至少一个组 播业务, 组播业务包表, 组播预览允许表。
15. 一种组播预览业务的传输装置, 包括:
查找单元,设置为按照预定顺序在管理对象和 /或管理对象的属性中查找组 播加入请求报文中所携带的属性, 其中, 所述管理对象和 /或管理对象的属性包 括以下至少之一: 组播操作模板 MOP、 扩展组播操作模板 EMOP的授权组、 组播用户控制 MSC的组播预览允许表、 EMOP的预览组;
传输单元, 设置为按照所述查找单元的查找结果转发或者停止转发所述组 播加入请求报文所请求的业务给用户。
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