CN101119220B - Gb passive optical network based multicast service implementing method and apparatus - Google Patents

Gb passive optical network based multicast service implementing method and apparatus Download PDF

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CN101119220B
CN101119220B CN 200710122374 CN200710122374A CN101119220B CN 101119220 B CN101119220 B CN 101119220B CN 200710122374 CN200710122374 CN 200710122374 CN 200710122374 A CN200710122374 A CN 200710122374A CN 101119220 B CN101119220 B CN 101119220B
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multicast
optical network
multicast service
port
bridge port
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CN 200710122374
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CN101119220A (en
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何珉
刘毅
娄本刚
时彦平
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中兴通讯股份有限公司
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Abstract

The present invention discloses a multicast service realizing method which is based on the Gigabit-Capable Passive Optical Network, including the following steps: adding a multicast method selecting control into a multicast table; deploying a multicast method, which is used for the multicast service, in the multicast method selecting control; and processing the multicast service according to the deployed multicast method. Correspondingly, the present invention also provides a multicast service realizing device which is based on the Gigabit-Capable Passive Optical Network, and can encrypt the multicast data of different optical network units according to the needs of the spots, which increases the safety or can achieve the traditional multicast service of the non-optical network, and savesthe broadband resource.

Description

一种基于吉比特级无源光网络的组播业务实现方法及装置 A method and apparatus for a multicast service based gigabit passive optical network implemented

技术领域 FIELD

[0001] 本发明涉及光接入网技术领域,尤其涉及一种基于GPON(Gigabit-c即ablePassive Optical Networks,吉比特级无源光网络)的组播业务实现方法及装置。 [0001] The present invention relates to the field of optical networks, in particular to a GPON (Gigabit-c i.e. ablePassive Optical Networks, gigabit passive optical network) the method and device realizing multicast service basis.

背景技术 Background technique

[0002] PON(Passive Optical Networks,无源光网络)是为了支持点到多点应用发展起来的光接入技术。 [0002] PON (Passive Optical Networks, passive optical network) is designed to support applications developed multipoint optical access technology. 其在光分支点不需要节点设备,只需安装一个简单的光分支器即可,因此具有节省光缆资源、带宽资源共享、节省机房投资、设备安全性高、建网速度快、综合建网成本低等优点。 In the light of its branch point does not need node device, simply install a simple optical splitter can be, it has to save cable resources, bandwidth sharing, saving room investment, high security device, rapidity fast, comprehensive network construction costs low.

[0003] PON包括APON(Asynchronous Transfer Mode Passive Optical Networks,艮卩异步传输模式无源光网络)、EP0N(Ethernet Passive Optical Networks,以太网级无源光网络)和GPON(Gigabit-c即able Passive Optical Networks,吉比特级无源光网络)。 [0003] PON comprises APON (Asynchronous Transfer Mode Passive Optical Networks, Gen Jie ATM passive optical network), EP0N (Ethernet Passive Optical Networks, Ethernet passive optical network level), and GPON (Gigabit-c i.e. able Passive Optical networks, gigabit passive optical network). GPON 由于支持高速率、多业务并且具有丰富的OAM&P(Operation,Administration,Maintenance and Provisioning,操作、管理、维护和配置)功能成为PON技术的重要发展方向。 Since GPON supports high-speed, multi-service and has extensive OAM & P (Operation, Administration, Maintenance and Provisioning, Operations, Administration, Maintenance and Provisioning) feature is an important direction of development of PON technology. [0004] 图1是GPON接入网络结构示意图,该GPON接入网络由OLT(OpticalLine Termination,光线路终端)101 、0DN(Optical Distribution Network,光分配网络)102和ONU (Optical Network Unit,光网络单元)103三部分构成,其中,所述光分配网络102不含有任何有源电子器件及电子电源,全部由Splitter(光分路器)等无源器件组成;所述光线路终端101为局端设备,与若干用户端设备即光网络单元103相对应,并且该光线路终端101包含SNI (Service Node Interface,业务节点接口)和PON端口;所述光网络单元103 包含UNI(User Network Interface,用户网络接口)。 [0004] FIG. 1 is a schematic diagram of GPON access network architecture, the access network by the GPON OLT (OpticalLine Termination, Optical Line Terminal) 101, 0DN (Optical Distribution Network, an optical distribution network) 102 and ONU (Optical Network Unit, optical network means) 103 composed of three parts, wherein the optical distribution network 102 does not contain any active electronic devices and electronic power supply, all from splitter (optical splitter) composed of passive components such as; the optical line terminal to the central office 101 device, i.e. with a number of CPE corresponding optical network unit 103, and the optical line terminal 101 comprises SNI (service node Interface, service node Interface) and PON port; the optical network unit 103 comprises a UNI (user network Interface, the user Network Interface).

[0005] GPON接入网络为一对多的网络,OLT在OLT到ONU方向即下行方向的业务数据包采用广播方式进行发送,ONU根据每个业务数据包所携带的12比特Port-ID (传输通道标识)值过滤下行业务数据包,有选择地获取属于自己的业务数据包而丢弃其余不相关的业务数据包;ONU在上行方向上即ONU到OLT方向上,通过分配给自己的时隙突发上传业务给OLT。 [0005] GPON access network is a network of many, OLT to the ONU in the OLT direction i.e. downlink packet service data using broadcast transmission, according to the ONU 12-bit Port-ID of each service data carried by the packet (transmission channel identifier) ​​value of the downlink service data packet filter selectively acquires service data packet and discard the rest of their own service data packet irrelevant; ONU in the upstream direction from the ONU to the OLT i.e. a direction, to their protruding through the dispensing slot send upload service to the OLT.

[0006] GPON在OLT侧采用Port-ID来标识来自不同ONU的各种业务,Port-ID用来提供GPON中4096个不同的业务流标识,以实现业务流复用。 [0006] employed GPON OLT side Port-ID to identify a variety of traffic from different ONU, GPON Port-ID 4096 is used to provide different service flow identifier, service flow to achieve multiplexing. OLT发送给ONU的下行业务可以通过加密装置实现加密,以达到组网安全性要求。 OLT transmits downstream traffic to the ONU with the encryption device may be implemented to achieve the network security requirements.

[0007] 现有技术一在实现基于GPON的组播业务时采用传统的GPON系统组播模式即OLT 根据配置的组播过滤表过滤掉不属于该PON端口的组播节目源,然后将属于该PON端口的组播节目源通过广播的方式发送给所有的0NU,由ONU完成组播节目源的复制。 [0007] In a prior art realize OLT i.e. not filtered multicast program source according to the configuration of the PON port multicast table based on the traditional filtering system GPON GPON multicast service multicast mode, and belonging to the multicast program source PON port 0NU sent to all the way through the broadcast, multicast program source by the ONU complete replication. [0008] 该现有技术的缺陷在于无法满足组网安全性要求。 [0008] A drawback of this prior art is that the network can not meet the security requirements. 对于广播给所有ONU的业务, 由于每个ONU的密钥不同,无法通过数据加密的方式发送。 Broadcast to all ONU for business, because each ONU key, data can not be transmitted by encryption. 并且,多个ONU需要接收同一个组播数据流,也不能对数据流进行加密,由此,用户可以通过ONU接收所有的组播业务,从而无法满足组网安全性的要求。 And, a plurality of ONU needs to receive the same multicast data stream, the data stream can not be encrypted, whereby the user can receive all multicast service through the ONU, which can not meet the security requirements of networking.

[0009] 为了解决上述问题,现有技术二采用多复制组播模式实现基于GP0N组播业务。 [0009] In order to solve the above problems, the prior art two multi-mode multicast replication GP0N Based on the multicast service. 该技术引入BP (Bridge Port,桥端口),将该桥端口与0NU或者0NU的物理以太网口即UNI 一一对应,按照一定的规则建立Port-ID与BP之间的映射关系,确定基于桥端口的业务在GPON中的承载通道,并将组播复制功能在OLT完成,BP只有申请加入相应组播组才能收到OLT下发的数据包,从而实现无源光网络组播业务。 This technique is introduced BP (Bridge Port, bridge port), or the bridge port 0NU 0NU i.e. Ethernet interface UNI physical correspondence, the mapping relationship between BP and Port-ID according to certain rules, is determined based on the bridge bearer service port channel in GPON, OLT and the multicast copy function is completed, BP only apply for the corresponding multicast group to receive packets sent by the OLT to realize a passive optical network multicast service.

[0010] 该现有技术是在OLT上完成了组播业务的复制,OLT可以根据不同的ONU采用不同的加密数据方式将组播业务广播到0NU,从而只有可以正确解密的ONU才能接收到所述组播业务,与现有技术一相比,现有技术二增强了组播业务的安全性,克服了组播业务不能加密的缺点,但该现有技术二同时也存在如下缺陷即:占用了宝贵的带宽资源。 [0010] This is done in the prior art copy OLT multicast service, the OLT may use different encrypted data depending on the way the ONU broadcast multicast service to 0NU, so that only correctly received in order to decrypt the ONU said multicast service, as compared with a prior art, two prior art to enhance the security of multicast service, the multicast service can not overcome the disadvantages of encryption, but also the second prior art has the following disadvantages namely: occupies precious bandwidth resources. 由于在OLT 上实现组播业务的复制,其会占用下行通道的带宽,不适合于对带宽资源要求严格的应用场景。 Because achieve copy multicast service on the OLT, it will bandwidth downtrend, not suitable for bandwidth-critical application scenarios.

[0011] 综上可知,现有的实现无源光网络组播业务的技术,在实际使用上显然存在不便与缺陷,所以有必要加以改进。 [0011] To sum up, the existing passive optical network to realize multicast service art, there is clearly problems and disadvantages in practical use, it is necessary to be improved.

发明内容 SUMMARY

[0012] 针对上述的缺陷,本发明的第一目的在于提供一种基于吉比特级无源光网络的组 [0012] In view of the above drawbacks, a first object of the present invention is to provide a gigabit passive optical network based on a group

播业务实现方法,该方法可以根据应用场景的需要对不同的光网络单元进行组播业务数据 Multicast service implementation, the method may multicast service data to different optical network units required application scenario

的加密,增强组播业务的安全性或者可以实现传统的无源光网络组播业务,节省带宽资源。 Encryption, enhanced security can be achieved multicast service or a traditional passive optical network multicast traffic, saving bandwidth resources.

[0013] 本发明的第二目的在于提供一种基于吉比特级无源光网络的组播业务实现装置, [0013] The second object of the present invention is to provide an apparatus for implementing multicast service based gigabit passive optical network,

该装置可以根据应用场景的需要对不同的光网络单元进行组播业务数据的加密,增强组播 The device may encrypt the multicast service data to different optical network units required application scenarios for multicast

业务的安全性或者可以实现传统的无源光网络组播业务,节省带宽资源。 Security or business can implement traditional passive optical network multicast traffic, saving bandwidth resources.

[0014] 为了实现上述第一目的,本发明提供一种基于吉比特级无源光网络的组播业务实 [0014] To achieve the above first object, the present invention provides a multicast service based on real-gigabit passive optical network

现方法,所述方法包括如下步骤: Now, the method comprising the steps of:

[0015] A、在组播表中增加组播方式选择控制位; [0015] A, to add a multicast mode selection control bits in the multicast table;

[0016] B、在所述组播方式选择控制位中配置组播业务的组播方式; [0016] B, in the multicast mode selection control bit multicast multicast service configuration;

[0017] C、根据所配置的组播方式处理组播业务; [0017] C, processing multicast service based on the multicast as configured;

[0018] 根据本发明的方法,所述步骤B进一步包括: [0018] The method of the present invention, the step B further comprises:

[0019] Bl、接收上行方向光网络单元发送的互联网组管理协议包后,根据所述互联网组管理协议包在组播表中创建和/或删除组播组,并在组播方式选择控制位中配置组播业务的组播方式; After [0019] Bl, Internet Group Management Protocol uplink received packet directional optical network unit to transmit, the packet creation and / or delete the multicast group in a multicast table based on the Internet Group Management Protocol and Multicast mode selection control bit multicast service multicast configuration mode;

[0020] B2、根据互联网组管理协议包所携带的信息,将桥端口加入组播组对应的桥端口列表和/或将桥端口从组播组对应的桥端口列表中删除; [0021] B3、通知组播业务节目源播放组播业务数据。 [0020] B2, Internet Group Management Protocol according to the information carried by the packet, the bridge port corresponding to the multicast group join bridge port list and / or removed from the bridge port bridge port list of the multicast group corresponding to; [0021] B3 , the multicast service program source played multicast service data.

[0022] 根据本发明的方法,所述步骤B中配置的组播业务的组播方式包括多复制组播模式和传统吉比特级无源光网络组播模式。 [0022] The method of the present invention, the multicast service in multicast mode the step B comprises a plurality of configuration mode and the conventional multicast replication gigabit passive optical network multicast mode.

[0023] 根据本发明的方法,所述步骤A之后且步骤B之前进一步包括: [0023] After the method according to the present invention, the step A and before step B further comprising:

[0024] BO、在光网络单元配置传输通道标识,且该光网络单元要发送的互联网组管理协 [0024] BO, configure transport channel identification in an optical network unit and the optical network unit to transmit Internet Group Management Association

议包中携带有该传输通道标识。 Discussion packet carries the transport channel identifier. [0025] 根据本发明的方法,所述步骤Bl中,若在组播方式选择控制位上将组播业务的组播方式配置为多复制组播模式,则所述步骤BO还包括:将桥端口与光网络单元设置为一一对应;所述步骤B2还包括:根据互联网组管理协议包所携带的传输通道标识,查找传输通道标识到桥端口的映射以得到桥端口,并根据互联网组管理协议包所携带的加入组播组动作信息将所得到的桥端口加入组播组对应的桥端口列表,和/或根据互联网组管理协议包所携带的离开组播组动作信息将所得到的桥端口从组播组对应的桥端口列表中删除;或者[0026] 所述步骤B1中,若在组播方式选择控制位上将组播业务的组播方式配置为传统吉比特级无源光网络组播模式,则所述步骤B0还包括:将桥端口与无源光网络端口设置为一一对应;所述步骤B2还包括:根据互联网组管理协议包所携带 [0025] The method of the present invention, the step Bl, when the selection control bits on the multicast service in multicast mode is configured for multiple multicast replication multicast mode, then the BO step further comprises: a bridge port optical network unit to one correspondence; B2 further comprises the step of: identifying a transmission channel in accordance with Internet group management protocol carried by the packet, a transmission channel identifier lookup bridge port mapping to obtain a bridge port, and in accordance with Internet group management protocol packet carried in the multicast group join operation information is added to the bridge port corresponding to the multicast group of the resulting list of ports bridge, and / or carried away in accordance with Internet group management protocol multicast packets the obtained operation information bridge port from the port list of the multicast group corresponding to the bridge; or [0026] the step B1, when the selection control bits on the multicast service in multicast mode is configured to multicast a conventional multi-gigabit passive optical network multicast mode, the step B0 further comprises: a bridge port passive optical network port to one correspondence; B2 further comprises the step of: the carrying bag according to Internet group management protocol 无源光网络端口号和加入组播组动作信息,将与该无源光网络端口号对应的桥端口加入组播组对应的桥端口列表,和/或根据互联网组管理协议包所携带的无源光网络端口号和离开组播组动作信息将桥端口从组播组对应的桥端口列表中删除。 Passive optical network port number and a multicast group join operation information, the passive optical network port number corresponding to the bridge port corresponding to the multicast group join bridge port list, and / or on Internet Group Management Protocol packets carry no the network port number of the source light and leave a multicast group operation information is deleted from the bridge port bridge port list corresponding to the multicast group. [0027] 根据本发明的方法,所述步骤B1进一步包括: [0028] Bll、接收上行方向光网络单元发送的互联网组管理协议包; [0027] The method of the present invention, the step B1 further comprises: [0028] Bll, Internet Group Management Protocol uplink received packet directional optical network unit is transmitted;

[0029] B12、提取所述互联网组管理协议包所携带的传输通道标识/无源光网络端口号和组播组信息; [0029] B12, extracting the Internet Group Management Protocol transmission channel carried by the packet identification / passive optical network port number and multicast group information;

[0030] B13、根据所述传输通道标识/无源光网络端口号和组播组信息在组播表中创建和/或删除组播组,并在组播方式选择控制位中配置组播业务的组播方式。 [0030] B13, / passive optical network multicast group and port number information to create and / or delete the multicast group in the multicast transmission table according to the channel identification, selection and configuration control bits in the multicast service multicast mode the multicast mode. [0031] 根据本发明的方法,所述步骤C进一步包括: [0031] The method of the present invention, the step C further comprising:

[0032] Cl、接收下行方向组播业务节目源播放的组播业务数据后,提取该组播业务数据的目的组播组信息; After [0032] Cl, receives downlink multicast service data of the multicast service program source playback direction, extracts the destination multicast group information of the multicast service data;

[0033] C2、根据目的组播组信息,查找组播表和桥端口列表得到需要将所述组播业务数据转发的桥端口以及所配置的组播方式; [0033] C2, according to the destination information of the multicast group, the multicast lookup table and a multicast port list needs to obtain bridge port of the bridge, and forwarding the multicast service data are arranged;

[0034] C3、根据所得到的桥端口以及所配置的组播方式,将组播业务数据从无源光网络端口下发给光网络单元。 [0034] C3, and the bridge port in accordance with the configured multicast obtained, the multicast service data to the optical network units from a passive optical network port.

[0035] 根据本发明的方法,所述步骤C3进一步包括: [0035] The method of the present invention, the step C3 further comprises:

[0036] C31、根据所得到的桥端口查找与该桥端口对应的传输通道标识; [0036] C31, according to the obtained bridge port of the bridge port corresponding to the search and transmission channel identifier;

[0037] C32、在组播业务数据中打上传输通道标识,并根据所配置的组播方式将所述组播 [0037] C32, marked multicast transmission channel identification service data, according to the multicast mode and the multicast configured

业务数据从无源光网络端口下发给光网络单元。 Service data unit sent from the passive optical network optical network port.

[0038] 根据本发明的方法,若所述步骤B中配置的组播方式为多复制组播模式,则在所述步骤C32中,根据该传输通道标识个数复制组播业务数据,将其缓存到光网络单元对应桥端口的组播业务输出队列,并打上传输通道标识从无源光网络端口下发给光网络单元; 和/或 [0038] The method of the present invention, if the step B multicast configured for multi-mode multicast copy, then in step C32, based on the identification number of the transmission channel replicates the multicast service data, which optical network units corresponding to the cache bridge port output multicast service queue, and marked with a transmission channel identifier sent from the optical network unit, a passive optical network port; and / or

[0039] 若所述步骤B配置的组播方式为传统吉比特级无源光网络组播模式,则在所述步骤C32中,将组播业务数据缓存到组播业务输出队列,并打上传输通道标识从无源光网络端口下发给光网络单元。 [0039] Step B If the multicast configuration of a conventional multi-gigabit passive optical network multicast mode, at the step C32, the multicast service multicast service data to the buffer output queue, and marked transmission channel identifier sent from the optical network unit, a passive optical network port.

[0040] 为了实现上述第二目的,本发明还提供一种基于吉比特级无源光网络的组播业务实现装置,该装置至少包括: [0040] To achieve the above second object, the present invention also provides an apparatus for implementing multicast service based gigabit passive optical network, the apparatus comprising at least:

[0041] 组播表,用于增加组播方式选择控制位,并在所述组播方式选择控制位中配置组 [0041] The multicast table, for increasing multicast mode selection control bits, and select the control bit arranged in the multicast group

6播业务的组播方式; 6 broadcast multicast service;

[0042] 组播业务处理模块,用于根据该组播表所配置的组播方式处理组播业务。 [0042] multicast service processing module for processing the multicast service multicast table according to the multicast mode configured. [0043] 根据本发明的装置,所述组播业务处理模块进一步包括: [0043] The device of the invention, the multicast service processing module further comprises:

[0044] 第一接收电路,用于接收上行方向光网络单元发送的互联网组管理协议包,并提取所述互联网组管理协议包所携带的信息; [0044] a first receiving circuit for receiving an uplink directional optical network unit transmits the Internet Group Management Protocol packets and extracting the Internet Group Management Protocol information carried by the packet;

[0045] 桥端口加入/删除组播组电路,用于根据互联网组管理协议包所携带的信息,将桥端口加入组播组对应的桥端口列表和/或将桥端口从组播组对应的桥端口列表中删除; [0046] 第一发送数据电路,用于在上行方向上通知组播业务节目源播放组播业务数据; [0047] 第二接收电路,用于接收下行方向组播业务节目源播放的组播业务数据和提取该组播业务数据的目的组播组信息; [0045] The bridge port to / delete the multicast group circuit for Internet Group Management Protocol information carried by the packet, the bridge port corresponding to the multicast group join bridge port list and / or the bridge port corresponding to the multicast group from to remove the bridge port list; [0046] a first data transmission circuit for notifying the multicast service multicast service data playback program source in the upstream direction; [0047] a second receiving circuit for receiving a downlink multicast service program multicast service data and the extracted destination multicast group information of the multicast service data of the broadcast source;

[0048] 第一查找电路,用于根据目的组播组信息,查找组播表和桥端口列表得到需要将所述组播业务数据转发的桥端口以及所配置的组播方式; [0048] The first lookup circuit for multicast multicast table and the bridge port need to obtain a list of the bridge ports, and forwarding the multicast service data configured according to the purpose of the multicast group information, find;

[0049] 第二发送数据电路,用于根据所得到的桥端口以及所配置的组播方式,将组播业务数据从无源光网络端口下发给光网络单元。 [0049] The second data transmission circuit, and the bridge port according to the configured multicast obtained, the multicast service data to the optical network units from a passive optical network port.

[0050] 根据本发明的装置,所述组播业务处理模块还进一步包括: [0051] 第一映射表,用于存储传输通道标识到桥端口的映射; [0052] 第二映射表,用于存储桥端口到传输通道标识的映射; [0050] The device of the invention, the multicast service processing module further comprises: [0051] a first mapping table for storing a transmission channel of the bridge port mapping identifier; [0052] The second mapping table for bridge port mapping stored transmission channel identifier;

[0053] 所述第二查找电路,用于根据互联网组管理协议包所携带的传输通道标识,查找第一映射表以得到桥端口; [0053] The second lookup circuit for identifying transmission channels Internet Group Management Protocol carried by the packet, the first mapping table lookup to obtain a bridge port;

[0054] 所述第三查找电路,根据桥端口查找第二映射表以得到传输通道标识。 [0054] The third lookup circuit, a second port mapping table lookup to obtain a transmission channel identification bridge.

[0055] 本发明通过在组播表增加组播方式选择控制位,通过该控制位设置组播业务的组 [0055] The present invention is selected by control bits in the multicast table to add a multicast mode, the multicast service provided by the group of control bits

播方式,所述组播业务的组播方式可以配置为多复制组播模式或者传统GP0N组播模式,然 Broadcast mode, the multicast service multicast may be configured as a multi-copy mode or a multicast GP0N conventional multicast mode, then

后根据所配置的组播方式处理组播业务,从而实现了基于GP0N的组播业务。 After processing multicast service based on the multicast as configured, thereby realizing multicast service based GP0N. 当根据应用场 When the field depending on the application

景的需要将组播业务的组播方式配置为多复制组播模式时,对不同的光网络单元进行组播 King needed to configure the multicast service multicast mode is a multi-mode multicast replication, different optical network unit multicasts

业务数据的加密,增强了组播业务的安全性,或者当根据应用场景的需要将组播业务的组 Encrypted service data, to enhance the security of a multicast service, or when the required service scenarios multicast group

播方式配置为传统GP0N组播模式时,实现传统的GP0N组播业务,节省了带宽资源。 When configured as a traditional way of sowing GP0N multicast mode, to achieve the traditional GP0N multicast service, saving bandwidth resources.

附图说明 BRIEF DESCRIPTION

[0056] 图1是GP0N接入网络结构示意图; [0056] FIG. 1 is a schematic diagram GP0N access network architecture;

[0057] 图2是本发明提供的基于GP0N的组播业务实现装置模块图; [0057] FIG. 2 is a GP0N multicast service device module of FIG. Based on the present invention provides;

[0058] 图3是本发明提供的基于GP0N的组播业务实现方法流程图; [0058] FIG. 3 is a flowchart GP0N multicast service implementation method of the present invention provides;

[0059] 图4是本发明第一实施例提供的基于GP0N的组播业务实现方法流程图; [0059] FIG. 4 is a flowchart GP0N multicast service implementation method according to a first embodiment of the present invention;

[0060] 图5是本发明第一实施例提供的基于GP0N的组播业务实现系统模型图; [0060] FIG 5 is a model diagram based GP0N multicast service implementation system according to a first embodiment of the present invention;

[0061] 图6是本发明二实施例提供的基于GP0N的组播业务实现方法流程图; [0061] FIG 6 is a flowchart illustrating the present invention GP0N multicast service implementation method provided in the second embodiment;

[0062] 图7是本发明第一和第二实施例提供的基于GP0N组播业务的实现方法模型示意图。 [0062] FIG. 7 is a schematic model implemented method GP0N multicast service to the first and second embodiments of the present disclosure. 具体实施方式 Detailed ways

[0063] 为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明进行进一步详细说明。 [0063] To make the objectives, technical solutions and advantages of the present invention will become more apparent hereinafter in conjunction with the accompanying drawings and embodiments of the present invention will be further described in detail. 应当理解,此处所描述的具体实施例仪仅用以解释本发明,并不用于限定本发明。 It should be understood that the specific embodiments described herein are merely instrument to explain the present invention and are not intended to limit the present invention.

[0064] 本发明的基本思想是:在组播表增加组播方式选择控制位,通过该控制位设置组播业务的组播方式,所述组播业务的组播方式可以配置为多复制组播模式和/或传统GP0N 组播模式,然后根据所配置的组播方式处理组播业务,实现GP0N组播业务。 [0064] The basic idea of ​​the invention is: selection control bits in the multicast table to add a multicast mode, the multicast service provided by the mode control bit multicast, the multicast service multicast may be configured as multiple sets replication multicast mode and / or traditional GP0N multicast mode and processing multicast service based on the multicast as configured achieved GP0N multicast service. [0065] 本发明提供的基于GP0N的组播业务实现装置200如图2所示,该装置200位于0LT上,且包括组播表201和组播业务处理模块。 [0065] GP0N multicast service implementing apparatus 200 shown in FIG basis, the present invention provides the apparatus 2200 is located on 0LT, and includes a multicast table 201 and the multicast service processing module. 其中, among them,

[0066] 组播表201,参见表1,包括组播组信息、桥端口索引和组播方式选择控制位。 [0066] The multicast table 201, Table 1, including the multicast group information, and the bridge port index multicast mode selection control bits. 组播组信息在硬件实现上是通过MAC(Media Access Control,介质访问控制)和VLAN-ID (Virtual Local Area Network Identifier,虚拟局域网标识符)的组合来实现的。 Multicast group information is implemented in hardware by a MAC (Media Access Control, media access control), and VLAN-ID (Virtual Local Area Network Identifier, virtual local area network identifier) ​​in combination thereof. 所述组播表201用于在组播方式选择控制位中配置组播业务的组播方式,其所配置的组播业务的组播方式包括多复制组播模式和传统GP0N组播模式。 The multicast table 201 for multicast in multicast mode selection control bit configuration of multicast service, the multicast service in multicast mode configuration it includes a plurality of copy mode and a multicast mode multicast traditional GP0N. [0067] 表1组播表[0068] [0067] Table 1 Multicast Table [0068]

<table>table see original document page 8</column></row> <table> <Table> table see original document page 8 </ column> </ row> <table>

[0069] 组播业务处理模块,用于根据组播表201所配置的组播方式处理组播业务。 [0069] multicast service processing module for processing the multicast service based on the multicast mode multicast table 201 configured. 该模块进一步包括:第一接收电路202、第一映射表203、第二查找电路204、桥端口加入/删除组播组电路205、第一发送数据电路206、第二接收电路207、第一查找电路208、第二映射表209、第三查找电路210和第二发送数据电路211。 The module further comprises: a first receiving circuit 202, a first mapping table 203, a second lookup circuit 204, a bridge port Add / Delete multicast group circuit 205, a first data transmission circuit 206, a second receiving circuit 207, a first lookup circuit 208, a second mapping table 209, the third 210 and second lookup circuit 211 transmits data circuit. 其中, among them,

[0070] 第一接收电路202,用于接收上行方向ONU发送的IGMP (Internet Gro卯Management Protocol,互联网组管理协议)包,并提取所述IGMP包所携带的信息。 [0070] The first receiving circuit 202 for receiving an ONU uplink transmission IGMP (Internet Gro d Management Protocol, Internet Group Management Protocol) packet, and extracts the information carried in the IGMP packet. [0071] 具体而言,若组播表201配置的组播方式为多复制组播模式,该第一接收电路202 提取所述IGMP包所携带的Port-ID (传输通道标识)、组播组信息和加入组播组动作信息或离开组播组动作信息。 [0071] Specifically, if the multicast mode multicast table 201 configured for multi-copy multicast mode, the first receiving circuit 202 extracts the IGMP packet carried Port-ID (transmission channel ID), a multicast group join a multicast group information and the operation information or the operation information of leaving a multicast group. 若组播表201配置的组播方式为传统GP0N组播模式,该第一接收电路202提取所述互联网组管理协议包所携带的PON端口号、组播组信息和加入组播组动作信息或离开组播组动作信息。 If the multicast mode multicast table 201 is configured for a conventional GP0N multicast mode, the first receiving circuit 202 extracts the Internet Group Management Protocol PON port carried by the packet number, the multicast group information and the operation information or join a multicast group leaves the multicast group action information.

[0072] 该第一接收电路202将IGMP包所携带的信息传递给第二查找电路204。 [0072] The first receiving circuit 202 IGMP information carried by the packet is transmitted to a second lookup circuit 204. 所述上行方向是指从ONU到0LT的方向。 The uplink direction refers to the direction from the ONU to the 0LT.

[0073] 第一映射表203,参见表2,用于存储Port-ID到BP (Bridge Port,桥端口)的映射。 [0073] The first mapping table 203, Table 2, Port-ID for storing the BP (Bridge Port, bridge port) mapping.

[0074] 第二查找电路204,与第一接收电路202和第一映射表203相连,用于根据第一接收电路202所提取的IGMP包携带的信息,查找得到BP。 [0074] The second lookup circuit 204, and the first receiving circuit 202 is connected to a first mapping table 203, for information carried in the first receiving circuit 202 of the extracted IGMP packets to find give BP.

[0075] 具体而言,若该第二查找电路204接收到第一接收电路202提取的IGMP包携带的Port-ID,则查找第一映射表203中与所述Port-ID对应映射的BP从而得到BP。 [0075] Specifically, if the second lookup circuit 204 reception circuit 202 receives the first packet carrying the extracted IGMP Port-ID, the lookup BP 203 Port-ID in the map corresponding to the first mapping table such that get BP. 若该第二查找电路204接收到第一接收电路202提取的IGMP包携带的PON端口号,则直接得到与其——对应的BP。 If the second lookup circuit 204 receives the first receiving circuit 202 extracts the IGMP packet carries a PON port number is obtained directly thereto - corresponding BP.

[0076] 该第二查找电路204还进一步用于将BP和IGMP包所携带的相关信息(包括组播组信息和加入组播组动作信息或离开组播组动作信息)传递给桥端口加入/删除组播组电路205。 [0076] The second lookup circuit 204 is further configured to BP and IGMP related information carried by the packet (multicast group join a multicast group information and the operation information or the operation information of leaving a multicast group) transmitted to the Bridge Port Add / delete circuit 205 multicast groups.

[0077] 表2第一映射表[0078] [0077] The first mapping table in Table 2 [0078]

<table>table see original document page 9</column></row> <table> <Table> table see original document page 9 </ column> </ row> <table>

[0079] 桥端口加入/删除组播组电路205,与组播表201、第二查找电路204和第一发送数据电路206相连,用于根据IGMP包所携带的信息,将BP加入组播组对应的BP列表和/ 或将桥端口从组播组对应的BP列表中删除。 [0079] Bridge Port Add / delete circuit 205 is a multicast group, the multicast table 201, a second lookup circuit 204, and a first data transmission circuit 206 is connected, according to the information carried in the IGMP packet, the multicast group join BP BP corresponding list and / or removed from the BP bridge port corresponding to the multicast group list.

[0080] 具体而言,当所述桥端口加入/删除组播组电路205接收到第二查找电路204所传递的BP和IGMP包所携带的相关信息后,根据IGMP包所携带的加入组播组动作信息将BP 加入组播组对应的BP列表和/或根据IGMP包所携带的离开组播组动作信息将BP从组播组对应的BP列表中删除。 [0080] Specifically, when the bridge port Add / delete circuit 205 receives the multicast group related information of the second lookup circuit 204 delivered IGMP packet BP and carried, the IGMP join the multicast packet according carried the set of motion information corresponding to the multicast group join BP BP list and / or the list of BP BP removed from the multicast group corresponding to the operation leaves a multicast group in IGMP packet in accordance with information carried. 所述BP列表如表3所示,包括:下一个BP的指针和BP编号。 The list shown in Table 3. BP, comprising: a next pointer BP and BP numbers. 若用Pointer指针全1表示BP列表结束。 If using whole Pointer 1 pointer BP indicates the end of the list. [0081] 表3 BP列表[0082] [0081] Table 3 BP List [0082]

<table>table see original document page 9</column></row> <table> <Table> table see original document page 9 </ column> </ row> <table>

[0083] 第一发送数据电路206,用于在上行方向上通知组播业务节目源播放组播业务数据。 [0083] The first data transmission circuit 206, a program for notifying the multicast service multicast service data sources for playback in the upstream direction. 当桥端口加入/删除组播组电路205完成操作后,通过该第一发送数据电路206通知组播业务节目源播放组播业务数据。 When the bridge port Add / Delete multicast group to complete the operation circuit 205, the multicast service notification program 206 displays the source of the multicast service data via a first data transmission circuit.

[0084] 第二接收电路207,用于接收下行方向组播业务节目源播放的组播业务数据和提取该组播业务数据的目的组播组信息。 [0084] The second receiving circuit 207 for receiving the multicast service downlink multicast service data of the program broadcast source and extracting the destination multicast group information of the multicast service data. 所述下行方向是指从OLT到ONU的方向。 The downlink direction refers to the direction from the OLT to the ONU. 该第二接收电路207提取组播业务数据的目的组播组信息后,将其传送给第一查找电路208。 After the second receiving circuit 207 extracts object information of the multicast group of the multicast service data, which is transmitted to the first lookup circuit 208. 该第二接收电路207还进一步包括提取组播业务数据的优先级802. lp值。 The second receiving circuit 207 further includes a priority value extractor 802. lp multicast service data. [0085] 第一查找电路208,与组播表201和第二接收电路207相连,用于根据第二接收电路207所传递目的组播组信息,查找组播表201和BP列表得到需要将所述组播业务数据转发的BP以及所配置的组播方式。 [0085] The first lookup circuit 208, 207 is connected to the multicast table 201 and the second receiving circuit for the purpose of transmitting the multicast group information 207 according to the second receiving circuit, the multicast lookup table 201 to obtain a listing and need The BP said multicast service data forwarding and multicast BP configured.

[0086] 第二映射表209,用于存储BP到Port-ID的映射。 [0086] The second mapping table 209 for storing the BP Port-ID of the mapping. 该表包括BP、802. lp值和 The table includes BP, 802. Lp value and

Port-ID,如表4所示。 Port-ID, as shown in Table 4.

[0087] 表4第二映射表 [0087] The second mapping table TABLE 4

[0088] [0088]

桥端口BP 802. IP值 Port-ID BP 802. IP bridge port Port-ID value

1 PortID-1 1 PortID-1

BP隱l PortID-1 Implicit l PortID-1 BP

1 PortID-2 1 PortID-2

BP-2 2 PortID-3 BP-2 2 PortID-3

1 PortID-n 1 PortID-n

BP-512 2 PortID-m BP-512 2 PortID-m

[0089] 第三查找电路210,与第一查找电路208、第二映射表209和第二发送数据电路211 相连,用于根据第一查找电路208所得到的BP查找第二映射表209以得到Port-ID。 [0089] The third lookup circuit 210, a first lookup circuit 208, 211 is connected to the second mapping table 209 and a second data transmission circuit for the second lookup table mapping circuit 208 according to the first lookup BP obtained to afford 209 Port-ID. [0090] 具体而言,若所配置的组播方式为多复制组播模式,则该第三查找电路210根据BP和优先级802. lp值查找第二映射表209以得到Port-ID。 [0090] Specifically, if the multicast replication configured for multiple multicast mode, the third lookup lookup circuit 210 to obtain the second mapping table 209 according to the Port-ID 802. lp BP and priority values. 若所配置的组播方式为传统无源光网络组播模式,则第三查找电路210根据BP,查找第二映射表209以得到Port-ID。 If you configured to multicast a conventional passive optical network multicast mode, according to the third lookup on BP circuit 210, lookup table 209 to obtain the second mapping Port-ID. [0091] 第二发送数据电路211,用于根据与BP对应的Port-ID以及所配置的组播方式将组播业务数据从PON端口下发给ONU。 [0091] The second data transmitting circuit 211, according to the BP corresponding multicast Port-ID and configured to send the multicast service data from the PON ONU port.

[0092] 具体而言,若所配置的组播方式为多复制组播模式,则该第二发送数据电路211 根据Port-ID个数复制组播业务数据,将其缓存到OLT对应BP的组播业务输出队列,并打上Port-ID从PON端口下发给0NU。 [0092] Specifically, if the multicast replication configured for multiple multicast mode, the second circuit 211 transmits data according to the number Port-ID replicates the multicast service data to its cache to the corresponding OLT group BP multicast service output queue, and marked 0NU port-ID issued from the PON port. 若所配置的组播方式为传统无源光网络组播模式,则该第二发送数据电路211将组播业务数据缓存到组播业务输出队列,并打上Port-ID从PON 端口下发给ONU。 If you configured to multicast a conventional passive optical network multicast mode, the second data transmission circuit 211 to the multicast service multicast service data buffer output queue, and marked Port-ID sent from the ONU PON port .

[0093] 本发明装置支持512个BP,每个BP可以配置最多8个Port-ID,通过第一映射表和第二映射表可以实现4096个Port-ID和512个BP之间的互相映射。 [0093] The support apparatus 512 according to the present invention, BP, BP each can configure up to eight Port-ID, the mapping from each other between 4096 and Port-ID BP 512 by the first and second mapping table mapping table. [0094] 图3是本发明提供的实现GPON组播业务的方法流程图,该方法包括如下: [0095] 步骤S301,在组播表中增加组播方式选择控制位。 [0094] FIG. 3 is a multicast service implemented method GPON provides a flow chart of the present invention, the method comprising: [0095] step S301, the increase in multicast mode selection control bits in the multicast table.

[0096] 步骤S302,在所述组播方式选择控制位中配置组播业务的组播方式。 [0096] Step S302, the mode selection in the multicast multicast control bit multicast service configuration. 所述组播业 The multicast industry

务的组播方式包括多复制组播模式和传统无源光网络组播模式。 The multicast service includes a multi-copy mode and a multicast conventional passive optical network multicast mode.

[0097] 具体而言,该步骤包括: [0097] Specifically, the step comprising:

[0098] 在光网络单元配置Port-ID,且该光网络单元要发送的IGMP包中携带有该 [0098] In the optical network unit is disposed Port-ID, and the optical network units to send the IGMP packet carries

10Port-ID。 10Port-ID.

[0099] 接收上行方向光网络单元发送的IGMP包后,根据所述IGMP包在组播表中创建和 [0099] After receiving the uplink direction light IGMP packet transmitted from the network unit, and to create the table in the multicast packet based on the IGMP

/或删除组播组,并在组播方式选择控制位中配置组播业务的组播方式。 / Or delete the multicast group, and select the multicast control bit multicast service in multicast configuration mode.

[0100] 根据IGMP所携带的信息,将桥端口加入组播组对应桥端口列表和/或将桥端口从 [0100] The information carried in the IGMP, join the bridge port bridge port corresponding to the multicast group list and / or the bridge port from

组播组对应的桥端口列表中删除。 Delete the multicast group corresponding bridge port list.

[0101] 通知组播业务节目源播放组播业务数据。 [0101] the multicast service program source played multicast service data.

[0102] 步骤S303,根据所配置的组播方式处理组播业务。 [0102] step S303, the processing multicast service based on the multicast as configured.

[0103] 具体而言,该步骤包括: [0103] Specifically, the step comprising:

[0104] 接收下行方向组播业务节目源播放的组播业务数据后,提取该组播业务数据的目的组播组信息。 [0104] After receiving the downlink multicast service data source program broadcast multicast service, extracting the destination multicast group information of the multicast service data.

[0105] 根据目的组播组信息,查找组播表和BP列表得到需要将所述组播业务数据转发的BP以及所配置的组播方式。 [0105] The object of the multicast group information, the multicast lookup table to obtain a list of BP and BP and multicasts the multicast service needs to be configured to forward data.

[0106] 根据所得到的BP以及所配置的组播方式,将组播业务数据从PON端口下发给光网络单元。 [0106] The BP and the configured multicast obtained, the multicast service data to the optical network units from the PON port.

[0107] 图4是本发明第一实施例提供的基于GPON的组播业务实现方法流程图,该实施例中将组播业务的组播方式配置为多复制组播模式,结合图5所示的无源光网络系统和图2 所示的装置200进行描述,所述装置200位于图5所示的无源光网络系统的OLT (光线路终端)505,该方法具体包括如下: [0107] FIG. 4 is a first embodiment of the present invention GPON realizing multicast service based on a flowchart of a method of this embodiment the multicast service in multicast mode in the embodiment is configured as a multi-mode multicast replication, in conjunction with FIG. 5 the passive optical network system and apparatus 200 shown in FIG. 2 will be described, the apparatus is located in the OLT 200 shown in FIG. 5 in a passive optical network system (optical line terminal) 505, which includes the following:

[0108] 步骤S401,在0NU1 (第一光网络单元)501上配置PortID-1和在0NU2 (第二光网络单元)502上配置PortlD-2,并且将BP-1与0NU1501设置为——对应,以及将BP-2与0NU2502设置为——对应。 [0108] Step S401, (the first optical network unit) disposed on 0NU1 501 PortID-1 and (a second optical network unit) 502 disposed on the PortlD-2 0NU2, and BP-1 and set to 0NU1501 - corresponding to and BP-2 and the set 0NU2502 - correspond.

[0109] 所述PortID-l和PortlD-2分别用来标识0NU1501和0NU2502的采用多复制组播模式的组播业务。 [0109] The PortID-l, and are used to identify PortlD-2 0NU1501 multicast mode and multi-copy 0NU2502 the multicast service. 本步骤可以进一步地在在0NU2502上配置PortlD-3以标识0NU2502的其它业务,如上网或者语音等。 This step may further be arranged in PortlD-3 0NU2502 to identify other services, such as voice or the like on the Internet 0NU2502.

[0110] 所述BP-1和BP-2位于第一终端503和第二终端504,如图5所示。 [0110] The BP-1 and BP-2 is located in the first terminal 503 and second terminal 504, as shown in FIG. 该BP-1和BP-2与PortID-l和PortlD-2的映射关系可参见表2所示的第一映射表203。 The BP-1 and BP-2 and PortID-l mapping relationship and PortlD-2 may be as shown in Table 2 in the first mapping table 203. 该第一映射表203的深度为4096,用Port-ID作索引,宽度为9位,存放的内容为BP。 The depth of the first mapping table 203 to 4096, with Port-ID as an index, a width of 9, the content is stored in BP. [0111] 步骤S402, 0NU1501和0NU2502在上行方向上分别发起请求加入组播组A的IGMP 包。 [0111] Step S402, 0NU1501 and 0NU2502 multicast group A were added to initiate the IGMP packet request in the upstream direction. 所述组播组A存在于系统中。 A multicast group is present in the system.

[0112] 步骤S403,第一接收电路202接收0NU1501和0NU2502发送的互联IGMP包,并提取所述IGMP包所携带的信息。 [0112] step S403, the first reception circuit 202 receives the IGMP packet network 0NU2502 0NU1501 and transmitted, and extracts the information carried in the IGMP packet. 所述信息包括:PortID-l和PortlD-2、组播组A信息和加入组播组动作信息。 The information includes: PortID-l and PortlD-2, A multicast group join the multicast group information and operation information.

[0113] 本步骤中,所述组播组A信息在硬件实现上用MAC-a和VID-x表示。 [0113] In this step, information indicating the multicast group A and a MAC-a VID-x implemented in hardware.

[0114] 步骤S404,根据IGMP包所携带的信息,在组播表201创建组播组A,如表1所示, [0114] step S404, the IGMP packet in accordance with information carried in the multicast table 201 creates the multicast group A, as shown in Table 1,

将组播方式选择控制位配置为多复制组播模式,并将所提取的IGMP包所携带的信息发送 The multicast mode selection control bits to configure multiple multicast replication mode, and supplies the extracted information carried by the packet sending IGMP

给第二查找电路204。 To the second lookup circuit 204.

[0115] 步骤S405,第二查找电路204根据IGMP包携带的PortID-1和PortID-2查找第一映射表203得到BP-1和BP-2,并将BP-1、 BP-2、组播组A信息和加入组播组动作信息发送给桥端口加入/删除组播组电路205。 [0115] step S405, the second lookup circuit 204 PortID-1 PortID-2, and a first lookup table mapping the IGMP packet carries 203 give BP-1 and BP-2, and BP-1, BP-2, multicast A group join the multicast group information, and operation information is sent to the bridge port Add / delete circuit 205 multicast groups. [0116] 步骤S406,桥端口加入/删除组播组电路205根据加入组播组动作信息,将BP-1 和BP-2写入组播组A对应的BP列表,用Pointer指针全1表示BP链表的结束,如表1和表3所示。 [0116] step S406, the bridge port to / remove circuit 205 according to a multicast group the multicast group join operation information, the list of BP-1 and BP BP-2 writes the multicast group corresponding to A, represented by a full pointer BP Pointer the end of the list, as shown in tables 1 and 3.

[0117] 步骤S407,第一发送数据电路206通知组播业务节目源服务器506播放组播业务数据。 [0117] step S407, the first data transmission circuit 206 notifies the multicast service program source server 506 displays the multicast service data.

[0118] 步骤S408,组播业务节目源服务器506通过下行方向链路播放组播业务数据。 [0118] step S408, the program source server 506 multicast service link through a downlink multicast service data playback direction. [0119] 步骤S409,第二接收电路207接收组播业务节目源服务器505播放的组播业务数据。 [0119] step S409, the second receiving circuit 207 receives the multicast service multicast service data server 505 to play program source.

[0120] 步骤S410,第二接收电路207提取所述组播业务数据所携带的目的组播组信息即MAC地址、Vlan-ID以及优先级802. lp值。 [0120] step S410, the second receiving circuit 207 extracts the destination multicast group the multicast service data is information carried by the MAC address, Vlan-ID and the priority value 802. lp.

[0121] 步骤S411,根据所述MAC地址和Vlan-ID,查找组播表201及其对应的BP列表得 [0121] step S411, the based on the MAC address and Vlan-ID, the multicast lookup table 201 a list of BP and their corresponding available

到需要将所述组播业务数据转发的BP-1、 BP-2以及所配置的组播方式。 To BP-1, BP-2 and multicasting the multicast service needs to be configured to forward data.

[0122] 具体而言,将MAC地址和Vlan-ID与组播表201中的所配置的MAC-a和VID_x进 [0122] Specifically, the MAC address and the multicast Vlan-ID table 201 and the MAC-a and configured into VID_x

行比较,若二者匹配,则通过组播表201中的BP-Index查找BP列表,得到需要将所述组播 OK comparison, if the two match, then search through the list of BP BP-Index multicast table 201, needs to obtain the multicast

业务数据转发的BP-1、 BP-2,并且通过组播表201中的组播方式控制位判断出所配置的组 Service data forwarding BP-1, BP-2, and the group is determined by the configuration of the multicast table 201. multicast control bit

播方式为多复制组播模式。 Multi-way broadcast multicast replication mode.

[0123] 步骤S412,第三查找电路210根据所得到的BP-l、BP-2以及优先级802. lp值,查找第二映射表209,参见表4,得到与BP-l、BP-2相对应的PortID-l和PortlD-2。 [0123] step S412, the third lookup circuit 210 according to the obtained BP-l, BP-2, and priority 802. lp value, a second lookup table mapping 209, in Table 4, obtained BP-l, BP-2 corresponding PortID-l and PortlD-2. [0124] 所述第二映射表209的深度为512,用BP作为索引,每个条目包括8个Port-ID, 根据802. lp,VLAN-ID、服务类型域以及以太网类型等字段为索引。 [0124] The second mapping table 209 has a depth of 512, with BP as an index, and each entry includes eight Port-ID, according 802. lp, VLAN-ID, the service type field and index field type of Ethernet .

[0125] 步骤S413 ,第二发送数据电路211根据Port-ID个数复制组播业务数据,将其缓存 [0125] step S413, the second data transmission circuit 211 Port-ID in accordance with the number of copies of multicast service data, its cache will

到OLT对应BP的组播业务输出队列,并打上Port-ID从PON端口下发给0NU。 BP OLT to the corresponding multicast service output queue, and marked 0NU Port-ID sent from the PON port.

[0126] 本步骤中,Port-ID个数为2,第二发送数据电路211根据多组播复制模式,将组播 [0126] In this step, the number of Port-ID is 2, the second circuit 211 transmits data according to a multi-copy mode multicast, multicast

业务数据复制两份,分别缓存到BP-1和BP-2的组播业务输出队列,可参见图7所示的多复 Two copies of service data, for buffering the output queue the multicast service BP-1 and BP-2, and several complex shown See Figure 7

制组播模式支路,并将打上PortID-l、 PortID-2从PON端口发送出去。 System multicast mode branch, and marked PortID-l, PortID-2 sent from the PON port.

[0127] 图5是本发明第二实施例提供的实现GP0N组播业务的方法流程图,该实施例中将 [0127] FIG. 5 is a flowchart of an implementation method of the present invention GP0N multicast service provided in the second embodiment, in the example of the embodiment

组播业务的组播方式配置为传统GPON组播模式,其无源光网络系统与图5相同,结合图5 Multicast mode multicast service multicast mode configuration to a conventional GPON, which is the same passive optical network system of FIG. 5, in conjunction with FIG. 5

和图2所示的装置200进行描述,所述装置200位于图5所示的无源光网络系统的OLT(光 OLT (Optical and apparatus 200 shown in FIG. 2 will be described, the apparatus 200 is located in a passive optical network system shown in FIG. 5

线路终端)505,该方法具体包括如下: Line Terminal) 505, which includes the following:

[0128] 步骤S601,分别在0NU1501和0NU2502上配置一个PortlD-4095,并且将BP-1与P0N1端口对应,BP-2与P0N2端口对应。 [0128] step S601, the PortlD-4095 are disposed on a 0NU1501 and 0NU2502, and BP-1 and the port corresponding to P0N1, BP-2 P0N2 corresponding port.

[0129] 所述PortID-4095用来标识0NU1501和0NU2502的采用传统GPON组播模式的组播业务。 [0129] used to identify the PortID-4095 and conventional GPON 0NU1501 multicast service multicast mode of 0NU2502.

[0130] 本发明中,无源光网络系统支持多少个PON口可以配置多少个BP用来做传统组播业务。 [0130] In the present invention, a passive optical network system supports number PON port number BP can be configured to do the traditional multicast service.

[0131] 步骤S602,0NU1501和0NU2502在上行方向上分别发起请求加入组播组A的IGMP 包。 [0131] Step S602,0NU1501 and 0NU2502 were added initiation request packet IGMP multicast group A in the upstream direction. 所述组播组A存在于系统中。 A multicast group is present in the system.

[0132] 步骤S603,第一接收电路202接收0NU1501和0NU2502发送的互联IGMP包,并提取所述IGMP包所携带的信息。 [0132] step S603, the first reception circuit 202 receives the IGMP packet network 0NU2502 0NU1501 and transmitted, and extracts the information carried in the IGMP packet. 所述信息包括:PON端口号、组播组A信息和加入组播组动作信息。 The information includes: PON port number, information about the multicast group A and the multicast group join operation information.

[0133] 步骤S604,在组播表201创建组播组A,如表1所示,将组播方式选择控制位配置为传统GP0N组播模式,并将所提取的IGMP包携带的信息发送给第二查找电路204。 [0133] step S604, the multicast table 201 creates the multicast group A, as shown in Table 1, the multicast mode selection control bits configured as a traditional GP0N multicast mode, and transmits the extracted information carried in the IGMP packet to The second lookup circuit 204. [0134] 步骤S605,第二查找电路204根据IGMP包携带的PON端口号直接得到BP_1和BP-2,并将BP-l、BP-2、组播组A信息和加入组播组动作信息发送给桥端口加入/删除组播组电路205。 [0134] step S605, the second lookup circuit 204 according to the port number of IGMP packets PON carried directly BP_1 and BP-2, and BP-l, BP-2, A multicast group join the multicast group information and the operation information transmitting was added to a bridge port / circuit 205 to delete the multicast group.

[0135] 步骤S606,桥端口加入/删除组播组电路205根据加入组播组动作信息,将BP_1 和BP-2写入组播组A对应的BP列表,用Pointer指针全1表示BP链表的结束,如表1和表3所示。 [0135] step S606, the bridge port to / remove circuit 205 according to a multicast group the multicast group join operation information, the list BP_1 BP and BP-2 is written corresponding to the multicast group A, using the full Pointer pointer BP indicates the list 1 end, as shown in table 1 and table 3.

[0136] 步骤S607,第一发送数据电路206通知组播业务节目源服务器506播放组播业务数据。 [0136] step S607, the first data transmission circuit 206 notifies the multicast service program source server 506 displays the multicast service data.

[0137] 步骤S608,组播业务节目源服务器506通过下行方向链路播放组播业务数据。 [0137] step S608, the program source server 506 multicast service link through a downlink multicast service data playback direction. [0138] 步骤S609,第二接收电路207接收组播业务节目源服务器505播放的组播业务数据。 [0138] step S609, the second receiving circuit 207 receives the multicast service multicast service data server 505 to play program source.

[0139] 步骤S610,第二接收电路207提取所述组播业务数据所携带的目的组播组信息即MAC地址和Vlan-ID。 [0139] step S610, the second receiving circuit 207 extracts the destination multicast group the multicast service data is information carried by the MAC address and Vlan-ID.

[0140] 步骤S611,根据所述MAC地址和Vlan-ID,查找组播表201及其对应的BP列表得 [0140] Step S611, based on the MAC address and Vlan-ID, the multicast lookup table 201 a list of BP and their corresponding available

到需要将所述组播业务数据转发的BP-l、 BP-2以及所配置的组播方式。 To the multicast service data needs to be forwarded BP-l, BP-2 and the configured multicast mode.

[0141] 具体而言,将MAC地址和Vlan-ID与组播表201中的所配置的MAC_a和VID_x进 [0141] Specifically, the MAC_a MAC address and the multicast Vlan-ID table 201 in the configuration of the intake and VID_x

行比较,若二者匹配,则通过组播表201中的BP-Index查找BP列表,得到需要将所述组播 OK comparison, if the two match, then search through the list of BP BP-Index multicast table 201, needs to obtain the multicast

业务数据转发的BP-1、 BP-2,并且通过组播表201中的组播方式控制位判断出所配置的组 Service data forwarding BP-1, BP-2, and the group is determined by the configuration of the multicast table 201. multicast control bit

播方式为多复制组播模式。 Multi-way broadcast multicast replication mode.

[0142] 步骤S612,第三查找电路210根据所得到的BP-l、BP-2查找第二映射表209,参见表4,得到与BP-l 、 BP-2相对应的PortID-4095。 [0142] step S612, the third lookup circuit 210 according to the obtained BP-l, BP-2 second mapping lookup table 209, in Table 4, obtained BP-l, BP-2 corresponding to the PortID-4095.

[0143] 优选地,在组播业务的组播方式配置为传统GPON组播模式时,将BP-l或者BP-2 下面的8个Port-ID的值都配置成相同的组播Port-ID即PortID-4095以实现和多复制组播模式的组播业务共用一个第二映射表209。 [0143] Preferably, the multicast service in multicast mode is configured as a conventional GPON multicast mode, or BP-l BP-2 The following eight Port-ID values ​​are configured for the same multicast Port-ID i.e. PortID-4095 to achieve a common multicast service and a multi-mode multicast replication second mapping table 209.

[0144] 步骤S613,第二发送数据电路211根据所得到的组播业务的组播方式即传统GP0N 组播模式将组播业务数据缓存到组播输出队列,并打上PortID-4095由PON端口发送出去。 [0144] step S613, the data transmission circuit 211 of the second embodiment according to the obtained multicast multicast service, i.e. the multicast mode GP0N traditional multicast service data to the multicast output queue buffer, and marked PortID-4095 sent by the PON port out. [0145] 可参考图7的传统GPON组播模式支路,在该支路上,将组播业务数据称为传统组播业务数据,将其缓存到组播输出队列,并打上PortID-4095,最后通过PON端口发送出去。 GPON tributary conventional multicast mode [0145] refer to FIG. 7, in this branch, the multicast service data referred to a conventional multicast service data to its cache to the multicast output queue, and marked PortID-4095, and finally sent through the PON port. [0146] 本发明的第三实施例中,若组播业务节目源服务器505通过下行方向链路播放采用多种组播方式的组播业务数据,则判断组播业务数据所配置的组播方式,若为多复制组播模式则根据本发明第一实施例所提供的方法处理组播业务数据,若为传统无源光网络组播模式,则根据本发明第二实施例所提供的方法处理组播业务数据。 [0146] The third embodiment of the present invention, if the multicast service program source server 505 by using a variety of multicast downlink multicast service data link play, it is determined that the multicast service data configured multicast If the processing method provided according to the present invention, the multicast service data to the first embodiment of a multi-copy multicast mode, if a conventional passive optical network multicast mode, the process according to the second embodiment of the present invention provides multicast service data. 其处理过程可参见图7。 Which process See Figure 7.

[0147] 综上可知,本发明通过在组播表增加组播方式选择控制位,通过该控制位设置组播业务的组播方式,所述组播业务的组播方式可以配置为多复制组播模式或者传统GPON 组播模式,然后根据所配置的组播方式处理组播业务,从而实现了GPON组播业务,根据应用场景的需要将组播业务的组播方式配置为多复制组播模式时,可以对不同的光网络单元进行组播业务数据的加密,增强了组播业务的安全性,或者当根据应用场景的需要将组播业务的组播方式配置为传统GP0N组播模式时,实现传统的GP0N组播业务,节省了带宽资源。 [0147] To sum up, the present invention may be configured as a multi-copy table in the multicast group by increasing the multicast mode selection control bits, the multicast service provided by the mode control bit multicast, the multicast service multicast traditional broadcast mode or multicast mode GPON and configured according to the multicast service multicast manner, thereby realizing multicast service GPON, according to the configuration required application scenario multicast service multicast mode is a multi-mode multicast replication when, may be made to different optical network units multicast service data encryption enhances the security of a multicast service, or when required configuration scenarios multicast service multicast mode GP0N conventional multicast mode, to achieve the traditional GP0N multicast service, saving bandwidth resources.

[0148] 当然,本发明还可有其它多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 [0148] Of course, the present invention may have a variety of other embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and variations according to the present invention, but these corresponding changes and variations should fall within the scope of the appended claims.

Claims (11)

  1. 一种基于吉比特级无源光网络的组播业务实现方法,其特征在于,所述方法包括如下步骤:A、在组播表中增加组播方式选择控制位;B、在所述组播方式选择控制位中配置组播业务的组播方式;C、根据所配置的组播方式处理组播业务;其中,所述步骤B进一步包括:B1、接收上行方向光网络单元发送的互联网组管理协议包后,根据所述互联网组管理协议包在组播表中创建和/或删除组播组,并在组播方式选择控制位中配置组播业务的组播方式;B2、根据互联网组管理协议包所携带的信息,将桥端口加入组播组对应的桥端口列表和/或将桥端口从组播组对应的桥端口列表中删除;B3、通知组播业务节目源播放组播业务数据。 Realizing multicast service based gigabit passive optical network, characterized in that, said method comprising the steps of: A, add a multicast mode selection control bits in the multicast table; B, in the multicast mode selection control bit multicast service multicast configuration mode; C, according to the configured multicast processing multicast service; wherein said step B further comprising: B1, Internet group management direction light receiving an uplink transmission unit of the network after the protocol packet, the packet created in accordance with the Internet group management protocol in the multicast table and / or delete the multicast group, and the configuration select control bit multicast service in multicast mode multicast mode; B2, according to an Internet group management protocol information carried by the packet, the bridge port corresponding to the multicast group join bridge port list and / or removed from the bridge port bridge port list of the multicast group corresponding to; B3, the multicast service multicast service data playback program source .
  2. 2. 根据权利要求1所述的方法,其特征在于,所述步骤B中配置的组播业务的组播方式包括多复制组播模式和传统吉比特级无源光网络组播模式。 2. The method according to claim 1, wherein the multicast service in multicast mode of the step B includes a plurality of configuration mode and the conventional multicast replication gigabit passive optical network multicast mode.
  3. 3. 根据权利要求2所述的方法,其特征在于,所述步骤A之后且步骤B之前进一步包括:BO、在光网络单元配置传输通道标识,且该光网络单元要发送的互联网组管理协议包中携带有该传输通道标识。 3. The method according to claim 2, wherein, after said step A and before step B further comprising: BO, configure transport channel identification in an optical network unit and the Internet Group Management Protocol optical network units to be transmitted packet carries the transmission channel identification.
  4. 4. 根据权利要求3所述的方法,其特征在于,所述步骤B1中,若在组播方式选择控制位上将组播业务的组播方式配置为多复制组播模式,则所述步骤BO还包括:将桥端口与光网络单元设置为一一对应;所述步骤B2还包括:根据互联网组管理协议包所携带的传输通道标识,查找传输通道标识到桥端口的映射以得到桥端口,并根据互联网组管理协议包所携带的加入组播组动作信息将所得到的桥端口加入组播组对应的桥端口列表,和/或根据互联网组管理协议包所携带的离开组播组动作信息将所得到的桥端口从组播组对应的桥端口列表中删除;或者所述步骤B1中,若在组播方式选择控制位上将组播业务的组播方式配置为传统吉比特级无源光网络组播模式,则所述步骤BO还包括:将桥端口与无源光网络端口设置为一一对应;所述步骤B2还包括:根据互联网组管理 4. The method according to claim 3, wherein said step B1, when the selection control bits on the multicast service in multicast mode is configured for multiple multicast replication multicast mode, the step BO further comprising: an optical network unit with the bridge port is set to one correspondence; B2 further comprises the step of: identifying a transmission channel in accordance with Internet group management protocol carried by the packet, to find the transmission channel identification mapping bridge port of the bridge port to give , bridge port according to join a multicast group and Internet group management protocol packets carried join a multicast group the obtained motion information corresponding to bridge port list, and / or carried away in accordance with Internet group management protocol multicast packet operation the bridge port information is deleted from the obtained list of the bridge port corresponding to the multicast group; or in the step B1, when the selection control bits on the multicast service in multicast mode multicast arranged without a conventional multi-gigabit multicast network source light pattern, then the BO step further comprises: a bridge port passive optical network port to one correspondence; B2 further comprises the step of: the Internet group management 议包所携带的无源光网络端口号和加入组播组动作信息,将与该无源光网络端口号对应的桥端口加入组播组对应的桥端口列表,和/ 或根据互联网组管理协议包所携带的无源光网络端口号和离开组播组动作信息将桥端口从组播组对应的桥端口列表中删除。 Discussion carried by the packet passive optical network port number and the bridge port operation join a multicast group list information, the passive optical network port number corresponding to the bridge port corresponding to the multicast group join, and / or on Internet Group Management Protocol carried by the packet passive optical network port number and leave a multicast group operation information is deleted from the bridge port bridge port list corresponding to the multicast group.
  5. 5. 根据权利要求4所述的方法,其特征在于,所述步骤B1进一步包括: Bll、接收上行方向光网络单元发送的互联网组管理协议包;B12、提取所述互联网组管理协议包所携带的传输通道标识/无源光网络端口号和组播组信息;B13、根据所述传输通道标识/无源光网络端口号和组播组信息在组播表中创建和/或删除组播组,并在组播方式选择控制位中配置组播业务的组播方式。 The method as claimed in claim 4, wherein the step B1 further comprises: Bll, Internet Group Management Protocol uplink receiving packet directional optical network units transmitted; B12, extracting the Internet Group Management Protocol carried by the packet transmission channel identification / passive optical network port number and multicast group information; B13, / passive optical network multicast group and port number information to create and / or delete the multicast group in the multicast transmission table according to the channel identification and multicast configuration mode selection control bit multicast service multicast mode.
  6. 6. 根据权利要求3所述的方法,其特征在于,所述步骤C进一步包括: Cl、接收下行方向组播业务节目源播放的组播业务数据后,提取该组播业务数据的目的组播组信息;C2、根据目的组播组信息,查找组播表和桥端口列表得到需要将所述组播业务数据转发的桥端口以及所配置的组播方式;C3、根据所得到的桥端口以及所配置的组播方式,将组播业务数据从无源光网络端口下发给光网络单元。 6. The method according to claim 3, wherein said step C further comprises: Cl, multicast service data after receiving the multicast service downlink broadcast program source, extracting the destination multicast service data of the multicast group information; C2, according to the destination information of the multicast group, the multicast lookup table and the bridge port list, and the bridge port to obtain the needed multicast forwarding multicast service data configured; a C3, according to the obtained bridge port and configured multicast, the multicast service data to the optical network units from a passive optical network port.
  7. 7. 根据权利要求6所述的方法,其特征在于,所述步骤C3进一步包括: C31 、根据所得到的桥端口查找与该桥端口对应的传输通道标识;C32、在组播业务数据中打上传输通道标识,并根据所配置的组播方式将所述组播业务数据从无源光网络端口下发给光网络单元。 7. The method according to claim 6, wherein the step C3 further comprises: C31, according to the bridge and the bridge port corresponding to the port to find a transmission path identifier obtained; C32, marked multicast service data transmission channel identification, and the configured multicast according to the multicast service data to the optical network units from a passive optical network port.
  8. 8. 根据权利要求7所述的方法,其特征在于,若所述步骤B中配置的组播方式为多复制组播模式,则在所述步骤C32中,根据该传输通道标识个数复制组播业务数据,将其缓存到光网络单元对应桥端口的组播业务输出队列,并打上传输通道标识从无源光网络端口下发给光网络单元;和/或若所述步骤B配置的组播方式为传统吉比特级无源光网络组播模式,则在所述步骤C32中,将组播业务数据缓存到组播业务输出队列,并打上传输通道标识从无源光网络端口下发给光网络单元。 8. The method according to claim 7, wherein the multicast mode when configured as a multi-step replication B multicast mode, then in step C32, the number of transmission channels according to the group identification replication multicast traffic data to its cache to the optical network units corresponding bridge port output multicast service queue, and marked with a transmission channel identifier sent from the optical network unit, a passive optical network port; and / or if the group configuration step B traditional broadcast mode gigabit passive optical network multicast mode, then in step C32, the multicast service multicast service data to the buffer output queue, and marked with a transmission channel identifier sent from the passive optical network port an optical network unit.
  9. 9. 一种实现如权利要求1〜8任一项所述方法的装置,其特征在于,该装置至少包括: 组播表,用于增加组播方式选择控制位,并在所述组播方式选择控制位中配置组播业务的组播方式;组播业务处理模块,用于根据该组播表所配置的组播方式处理组播业务;所述组播业务处理模块包括:第一接收电路,用于接收上行方向光网络单元发送的互联网组管理协议包,并提取所述互联网组管理协议包所携带的信息;桥端口加入/删除组播组电路,用于根据互联网组管理协议包所携带的信息,将桥端口加入组播组对应的桥端口列表和/或将桥端口从组播组对应的桥端口列表中删除;第一发送数据电路,用于在上行方向上通知组播业务节目源播放组播业务数据。 An apparatus for implementing the method according to any one of claims 1~8, wherein, the apparatus comprising at least: a multicast table, for increasing multicast mode selection control bits, and the multicast manner selection control bit multicast service multicast configuration mode; multicast service processing module, configured to multicast a multicast table based on the multicast service process; the multicast service processing module comprising: a first receiving circuit for Internet group management protocol uplink packet directional optical network unit receiving the transmission and extracting the Internet group management protocol information carried by the packet; bridge port Add / delete multicast group circuit for Internet group management protocol packet according to information carried in the bridge port corresponding to the multicast group join bridge port list and / or removed from the bridge port corresponding to the multicast group list port bridge; a first data transmission circuit for the multicast service notification in the upstream direction play the program source multicast service data.
  10. 10. 根据权利要求9所述的装置,其特征在于,所述组播业务处理模块进一步包括: 第二接收电路,用于接收下行方向组播业务节目源播放的组播业务数据和提取该组播业务数据的目的组播组信息;第一查找电路,用于根据目的组播组信息,查找组播表和桥端口列表得到需要将所述组播业务数据转发的桥端口以及所配置的组播方式;第二发送数据电路,用于根据所得到的桥端口以及所配置的组播方式,将组播业务数据从无源光网络端口下发给光网络单元。 10. The apparatus according to claim 9, wherein the multicast service processing module further comprises: a second receiving circuit for receiving the multicast service downlink multicast service data source program and extracting the set of play destination multicast group information of the multicast service data; a first lookup circuit for the purpose of multicast groups, the multicast lookup table and the bridge port list needs to obtain the multicast service data and the forwarding bridge port group arranged multicast mode; and a second data transmission circuit, and the bridge port according to the configured multicast the obtained data to the multicast service from the port of the passive optical network optical network unit.
  11. 11. 根据权利要求IO所述的装置,其特征在于,所述组播业务处理模块还进一步包括: 第一映射表,用于存储传输通道标识到桥端口的映射;第二映射表,用于存储桥端口到传输通道标识的映射;第二查找电路,用于根据互联网组管理协议包所携带的传输通道标识,查找第一映射表以得到桥端口;第三查找电路,根据桥端口查找第二映射表以得到传输通道标识。 IO 11. The apparatus according to claim, wherein the multicast service processing module further comprises: a first mapping table for storing mapping bridge port identifier to a transmission path; a second mapping table for bridge port mapping stored transmission channel identification; a second lookup circuit for identifying transmission channels Internet group management protocol carried by the packet, the first mapping table lookup to obtain a bridge port; third lookup circuit according to a first bridge port lookup two mapping table to obtain a transmission channel identification.
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