WO2023005378A1 - 一种级联ont的处理方法、装置和系统 - Google Patents

一种级联ont的处理方法、装置和系统 Download PDF

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Publication number
WO2023005378A1
WO2023005378A1 PCT/CN2022/094639 CN2022094639W WO2023005378A1 WO 2023005378 A1 WO2023005378 A1 WO 2023005378A1 CN 2022094639 W CN2022094639 W CN 2022094639W WO 2023005378 A1 WO2023005378 A1 WO 2023005378A1
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Prior art keywords
ont
transmission path
service data
slave
data message
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PCT/CN2022/094639
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English (en)
French (fr)
Inventor
林连魁
韩燕茹
张伦
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华为技术有限公司
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Priority to EP22847990.3A priority Critical patent/EP4369733A1/en
Publication of WO2023005378A1 publication Critical patent/WO2023005378A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/1301—Optical transmission, optical switches

Definitions

  • the present application relates to the field of optical communication, and in particular to a processing method, device and system for cascading ONTs.
  • Passive Optical Network (PON) technology is a point-to-multipoint optical fiber access technology.
  • the PON system may include an Optical Line Terminal (OLT), an Optical Distribution Network (ODN) and at least one Optical Network Unit (ONU).
  • OLT is connected to the ODN, and the ODN is connected to multiple ONUs.
  • the OLT provides a network-side interface, and the OLT is connected to an upper-layer network-side device (such as a switch, a router, etc.), and the lower layer is connected to one or more ODNs.
  • ODN includes a passive optical splitter for optical power distribution, a backbone fiber connected between the passive optical splitter and the OLT, and a branch fiber connected between the passive optical splitter and the ONU.
  • the ODN transmits the downlink data of the OLT to each ONU through an optical splitter.
  • the ODN aggregates the upstream data of the ONU and transmits it to the OLT.
  • the OLT is usually located in a central office (center office, CO), and the ONU is located at or near a user's home.
  • the ONU provides user-side interfaces and is connected to the ODN at the same time. If the ONU also provides user interface functions, such as providing an Ethernet user interface or a traditional telephone service (plain old telephone service, POTS) user interface, it is called an optical network termination (ONT).
  • ONT optical network termination
  • ONT optical network termination
  • ONT is a terminal device
  • each network user has at least one ONT device, resulting in a huge number of ONTs.
  • whether the ONT hardware structure can be simplified is a problem that needs to be considered.
  • the embodiments of the present application provide a processing method, device and system for cascading ONTs.
  • the embodiment of the present application provides a processing method for cascading ONTs, including:
  • the master ONT parses the uplink service data message from the slave ONT and obtains the user terminal identifier contained in the uplink service data message and the transmission path identifier that the user terminal accesses to the slave ONT ; At least a part of the data in the service data message is sent to the slave ONT by the user terminal; the master ONT establishes a transmission path correspondence table and saves it, wherein the transmission path correspondence table contains the user The corresponding relationship between the terminal identification, the transmission path identification and the identification from the ONT;
  • the master ONT receives a downlink service data message from the OLT, and the downlink service data message includes a destination address, and the destination address corresponds to a user terminal identifier;
  • the user terminal identification corresponding to the address after the corresponding transmission path identification is matched in the transmission path correspondence table, the transmission path identification is added to the downlink service data message; the main ONT will add the transmission path identification
  • the downlink service data message of the path identifier is sent to the slave ONT, and the transmission path identifier is used to instruct the slave ONT to send the downlink service data message from the transmission path corresponding to the transmission path identifier.
  • the master ONT directly controls the forwarding path of the slave ONT, so that the slave ONT can directly send service messages to the user terminal according to the transmission path identification information sent by the master ONT, and it is no longer necessary to search for the forwarding path on the slave ONT. site.
  • This not only improves the forwarding efficiency of the network, but also simplifies the hardware structure of the slave ONT, thus reducing the hardware cost and processing complexity of the slave ONT, and further reducing the network construction cost of the entire network.
  • the processing method further includes: the master ONT queries the transmission path correspondence table according to the destination address in the downlink service data message to determine the transmission path,
  • the transmission path includes not only the transmission path between the master ONT and the slave ONT, but also the transmission path between the slave ONT and the user terminal;
  • the transmission path identifier at least includes the transmission path indication information between the slave ONT and the user terminal.
  • the transmission path identifier is the port number of the physical port on the slave ONT, or the logical Link ID.
  • the method further includes: the master ONT receives the slave ONT The first message sent, the first message includes indication information of the length of the queue to be sent on at least one user terminal or the buffer size; according to the length of the queue to be sent on the at least one user terminal indicated in the first message or The cache size allocates uplink bandwidth to the slave ONT.
  • the destination address is the MAC address or IP address of the user terminal or user name and other information that can identify different user terminals.
  • the transmission path correspondence table further includes the type of the service data, so that data of different service types can be corresponding to different transmission paths.
  • an embodiment of the present invention provides a processing method for a cascaded optical network terminal ONT, including:
  • the data message is sent to the master ONT;
  • Receive the downlink service data message from described main ONT comprise described in the service data message from the transmission path identification between ONT and described user terminal; Determine user interface according to described transmission path identification; Described The service data in the downlink service data message is sent from the user interface to the user terminal.
  • the slave ONT can directly send the service message to the user terminal according to the transmission path identification information sent by the master ONT, and it is no longer necessary to address the forwarding path on the slave ONT. In this way, not only the forwarding efficiency of the slave ONT is improved, but also the hardware cost of the slave ONT is reduced by not setting a forwarding module on the ONT.
  • the method further includes: the slave ONT sends a first message to the master ONT, and the first message includes the length of the queue to be sent on at least one user terminal or an indication of the cache size.
  • the method further includes that the slave ONT sends to the master ONT through a low-latency channel including A message with the indicated information.
  • the transmission path identifier is the port number of the physical port from the ONT, Or the logical link identifier of the wireless link.
  • embodiments of the present invention provide an optical network terminal ONT, including a forwarding module, a service module, and a memory;
  • the service module is used to obtain the uplink service data message from the ONT, the uplink service data message includes the user terminal identification and the user terminal access to the transmission path identification from the ONT; the service At least a part of the data in the data message is sent from the ONT by the user terminal; a transmission path correspondence table is established, wherein the transmission path correspondence table includes the user terminal identifier, the transmission path identifier and the Describe the corresponding relationship from the ONT identifier;
  • the memory 606 is used to store the transmission path correspondence table
  • the service module 605 is also configured to receive a downlink service data message from the OLT, the downlink service data message includes a destination address, and the destination address corresponds to a user terminal identifier; and according to the destination address corresponding to The user terminal identifier, after matching the corresponding transmission path identifier in the transmission path correspondence table, adding the transmission path identifier to the downlink service data message;
  • the forwarding module 604 is configured to send the downlink service data message added with the transmission path identifier to the slave ONT, and the transmission path identifier is used to instruct the slave ONT to transmit the downlink service data from the transmission path corresponding to the transmission path identifier The message is sent out.
  • the forwarding module 604 is further configured to query the transmission path correspondence table according to the destination address in the downlink service data packet to determine the transmission path, and the transmission path It includes not only the transmission path between the master ONT and the slave ONT, but also the transmission path between the slave ONT and the user terminal; the transmission path identifier at least includes the transmission path indication information between the slave ONT and the user terminal.
  • the transmission path identifier is a port number of a physical port on the slave ONT, or a logical link identifier of a wireless link.
  • the method further includes: the service module 605 is further configured to receive the A first message, the first message includes indication information of the length of the queue to be sent on at least one user terminal or the buffer size; according to the length of the queue to be sent on the at least one user terminal indicated in the first message or the buffer size Allocate uplink bandwidth to the slave ONT.
  • the third possible implementation manner of the third aspect includes: the destination address is the MAC address or IP address of the user terminal or user name and other information that can identify different user terminals.
  • the transmission path correspondence table further includes the service The type of data, so that data of different service types can correspond to different transmission paths.
  • the embodiment of the present invention provides a slave optical network terminal ONT, including a service module 705,
  • the service module is used to obtain an uplink service data message from a user terminal, add the user interface information of the service data message as a transmission path identifier to the uplink service data message, and then add the transmission path identifier Send the uplink service data packet to the master ONT;
  • the service module is further configured to send a first message to the master ONT, where the first message includes the length of the queue to be sent or the buffer size of at least one user terminal instructions for the .
  • an embodiment of the present invention provides a master ONT, including a processor, a transceiver, and a memory.
  • the processor executes computer instructions, and cooperates with the transceiver to execute the method according to the first aspect or any possible implementation manner of the first aspect.
  • an embodiment of the present invention provides a slave ONT, including a processor, a transceiver, and a memory.
  • the processor executes computer instructions, and cooperates with the transceiver to execute the method according to the second aspect or any possible implementation manner of the second aspect.
  • an embodiment of the present invention provides a system for cascading optical network terminal ONTs, which is characterized in that it includes at least one of the above-mentioned master ONTs, and at least one of the above-mentioned any of the slave ONTs.
  • the master ONT directly controls the forwarding path of the slave ONT, so that the slave ONT can directly send the service message to the user terminal according to the transmission path identification information sent by the master ONT, and it is no longer necessary to configure the slave ONT. Addressing of the forwarding path is performed. This not only improves the processing efficiency of the system, but also simplifies the hardware structure of the slave ONT to reduce the hardware cost and processing complexity of the slave ONT, thereby reducing the network construction cost of the entire network.
  • FIG. 1 is a schematic diagram of a passive optical network architecture
  • Fig. 2 is a kind of schematic diagram of cascaded ONT network
  • Fig. 3 is a structural schematic diagram of a main ONT
  • Fig. 4 is a kind of structural representation from ONT
  • Fig. 5 is a schematic flow chart of a processing method for cascading ONTs provided by an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a master ONT provided by an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a slave ONT provided in the embodiment of the present application.
  • FIG. 8 is a schematic flow chart of a processing method of a cascaded ONT in the upstream direction provided by an embodiment of the present application;
  • FIG. 9 is a schematic flow chart of a processing method of a cascaded ONT in the downlink direction provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another main ONT provided by an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another slave ONT provided in the embodiment of the present application.
  • PON is a point-to-multipoint optical access technology.
  • the PON interface is a port used for data connection in a communication network using PON.
  • the transmission medium connected by the PON interface is an optical fiber, which can be used to receive or send optical signals.
  • the OLT and ONT are connected through a PON interface, and the OLT can be connected to multiple ONTs through one PON interface.
  • Various terminals of users are connected to the external network through ONT. When there are many terminals, it may be necessary to build an internal network and then connect to the ONT.
  • a home all-fiber network is proposed. This kind of network is to set up a master ONT device as a gateway to be responsible for the entry and exit nodes of the home network and the upper network.
  • the master ONT is cascaded with multiple slave ONTs, and the slave ONTs are distributed in every corner of the home to provide interfaces for users to access the network.
  • the OLT and the master ONT, and the master ONT and the slave ONT are connected by optical fibers.
  • the direction from the OLT to the ONT is called the downstream direction
  • the direction from the ONT to the OLT is called the upstream direction.
  • the signal transmission in the downlink direction adopts the broadcast mode
  • the signal transmission in the uplink mode adopts the time division multiplexing (time division multiplexing, TDM) mode.
  • the master ONT performs dynamic bandwidth assignment (DBA) for the uplink transmission time slot allocation of each slave ONT, all complying with the PON protocol of the passive optical network.
  • DBA dynamic bandwidth assignment
  • the master ONT and the slave ONT are named from the relative relationship between upstream and downstream, also for confirming the two.
  • the master ONT can be considered as a gateway
  • the slave ONT is an application point (AP).
  • AP application point
  • main ONT 300 comprises uplink optical interface 301, downlink optical interface 302, ONT media access control (media access control, MAC) module 303 (hereinafter referred to as ONT MAC), OLT media access control module 308 (hereinafter OLT MAC for short), forwarding module 304, service module 305, memory 306 and processor 307.
  • ONT media access control media access control, MAC
  • OLT media access control module 308 hereinafter OLT MAC for short
  • forwarding module 304 service module 305
  • memory 306 memory 307.
  • the uplink optical interface 301 is used to connect the upper layer optical equipment; the downlink optical interface 302 is used to connect the lower layer optical equipment.
  • ONT MAC 303 includes one or more PON MAC chips, which are used to perform protocol processing on the PON media access control (media access control, MAC) layer for the interactive messages between the main ONT 300 and the upper layer equipment, and to process the PON messages. Parsed or encapsulated.
  • PON media access control media access control
  • OLT MAC 308 includes one or more PON MAC chips, which are used to perform PON media access control (media access control, MAC) layer protocol processing on the interactive messages between the main ONT 300 and the lower layer equipment, and analyze the messages or encapsulation.
  • PON media access control media access control, MAC
  • the forwarding module 304 includes components or chips for realizing the forwarding function, which can be used to realize the forwarding of the two-layer and/or three-layer network protocols such as LAN switch (LAN switch, LSW) forwarding or IP routing (IP Routing), etc., and can also perform Network processing (network process, NP) or traffic management (traffic management, TM), etc.
  • LAN switch LAN switch
  • LSW Layer-1 switch
  • IP Routing IP Routing
  • NP Network processing
  • TM traffic management
  • the service module 305 may include a POTS (Plain Old Telephone Service) module providing a voice telephone access function, a GE (Gigabit Ethernet) module providing a broadband access function, an IPTV module providing an IP TV (Internet Protocol television, IPTV) service, and providing One or more of the WIFI (Wireless Fidelity) modules of the wireless access function are used for the management of the service data control layer, including service quality (QoS) management, port addressing, service priority setting or user rights verification management, etc. , mainly realized by software.
  • POTS Packe Old Telephone Service
  • GE Gigabit Ethernet
  • IPTV IP TV (Internet Protocol television, IPTV) service
  • WIFI Wireless Fidelity
  • the memory 306 is used to store uplink and downlink messages and intermediate data, such as double data rate (double data rate, DDR) memory, random access memory (random access memory, RAM) or flash memory.
  • double data rate double data rate
  • RAM random access memory
  • the processor 307 is configured to cooperate with the service module 305 and the forwarding module 304 to process service data.
  • the ONT 400 generally includes an uplink optical interface 401, a user interface 402, an ONT MAC 403, a forwarding module 404, a service module 405, a memory 406 and a processor 407.
  • the uplink optical interface 401 is used to connect the main ONT 300;
  • the user interface 402 is connected to the user terminal equipment, and is used to connect the user terminal equipment to the network, which can be a physical port or an air interface;
  • ONT MAC 403, forwarding module 404, service module 405, memory 406 and processor 407 are similar to the functions of corresponding modules 303-307 on the main ONT described above, and will not be repeated here.
  • the main ONT 300 can also include at least one user interface; the main ONT 300 and/or from the ONT 400 can also include one or more modules for performing Ethernet MAC layer protocol processing and Ethernet physical layer protocol processing.
  • Figure 5 provides a processing method for cascading ONTs according to the embodiment of the present application. As shown in Figure 5, the following steps are included.
  • Step 501 the main ONT receives the uplink service data message from the ONT, and the uplink service data message includes the user terminal identifier and the user terminal access to the transmission path identifier from the ONT; the service data message At least a part of the data in the text is sent from the ONT by the user terminal;
  • Step 502 The master ONT establishes and saves a transmission path correspondence table, wherein the transmission path correspondence table includes the correspondence between the user terminal identifier, the transmission path identifier, and the slave ONT identifier.
  • the transmission path correspondence table may further include the type of the service data, so that data of different service types can be corresponding to different transmission paths, so as to realize finer path selection. As shown in Table 1 below.
  • Step 503 the master ONT receives a downlink service data message from the OLT, the downlink service data message includes a destination address, and the destination address corresponds to a user terminal identifier;
  • the destination address may be information that can identify different user terminals, such as a MAC address, an IP address, or a user name of the user terminal.
  • Step 504 The master ONT adds the transmission path identifier to the downlink service datagram after matching the corresponding transmission path identifier in the transmission path correspondence table according to the user terminal identifier corresponding to the destination address text;
  • Step 505 The master ONT sends the downlink service data message added with the transmission path identifier to the slave ONT, and the transmission path identifier is used to instruct the slave ONT to transmit the downlink service data from the transmission path corresponding to the transmission path identifier The message is sent out.
  • step 5031 the main ONT queries the transmission path correspondence table according to the destination address in the downlink service data message, and determines the transmission path .
  • the transmission path includes not only the transmission path between the master ONT and the slave ONT, but also the transmission path between the slave ONT and the user terminal.
  • the transmission path identifier includes at least indication information of the transmission path between the slave ONT and the user terminal.
  • the ONT and the user terminal can be connected through a wired connection such as an Ethernet cable or a twisted pair, or can be connected through a wireless method such as WIFI and Bluetooth.
  • the above-mentioned transmission path identification used to identify the transmission path from the ONT and the user terminal can be the port number of the physical port on the slave ONT, which is used to distinguish each physical line; where the transmission between the ONT and a user terminal Both the data output port and the input port refer to the same physical port, and the physical port corresponding to the port number is both the output port and the input port of the ONT.
  • the above-mentioned transmission path identifier used to identify the transmission path from the ONT and the user terminal may also be a logical link identifier, which is used to distinguish each wireless link.
  • Table 2 and Table 3 show examples of the corresponding relationship between the transmission paths corresponding to the two scenarios.
  • business data type end user identification From ONT ID From the ONT port number business 1 User A 11111 #01 business 1 User B 22222 #02 Business 2 User C 11111 #03 Business 3 User D 44444 #04
  • the transmission path between the main ONT and the slave ONT can be identified by the identification ID of the ONT or the MAC address of the ONT; the transmission path between the ONT and the user terminal can be identified by the outgoing port number of the ONT .
  • the transmission path correspondence table is established on the master ONU, it is equivalent to virtualizing the user interface of each slave ONT to the local in the master ONT, just like managing the local user interface, the transmission to the user interface of each slave ONT Paths are managed directly.
  • the slave ONT can directly send the service message to the user terminal according to the transmission path identification information sent by the master ONT, and it is no longer necessary to address the forwarding path on the slave ONT. In this way, not only the forwarding efficiency of the slave ONT is improved, but also no forwarding module is set on the ONT to reduce the hardware cost of the slave ONT, thereby reducing the network construction cost of the entire network.
  • processing method may further include: the master ONT receiving the first message from the slave ONT, the first message including indication information of the length of the queue to be sent or the buffer size of at least one user terminal, The master ONT allocates uplink bandwidth to the slave ONT according to the length of the queue to be sent on at least one user terminal indicated in the first message or the buffer size indication information.
  • the master ONT can obtain the length or cache size of all user terminals connected to each slave ONT through multiple slave ONTs to evaluate the amount of data that each user terminal is about to send, and then obtain the data volume of the connected slave ONTs.
  • the bandwidth requirement of the user terminal is judged by the amount of uplink data to be sent by the slave ONT; the master ONT can allocate appropriate uplink bandwidth to the ONT according to the bandwidth requirement of the ONT.
  • the slave ONT receives the uplink service data message from the user terminal, and adds the user interface information receiving the service data message as a transmission path identifier to the uplink
  • the uplink service data message added with the transmission path identifier is sent to the master ONT
  • the slave ONT receives a downlink service data message from the main ONT, and the service data message includes the transmission path identifier between the slave ONT and the user terminal; according to the transmission path Identifying and determining the user interface; sending the service data in the downlink service data message from the user interface to the user terminal.
  • the method may further include: the slave ONT sends a first message to the master ONT, and the first message includes indication information of the length of a queue to be sent or the buffer size of at least one user terminal.
  • the downlink data service message received by the master ONT from the OLT, and finally the downlink data service message sent from the ONT to the user terminal does not include or be included, but refers to the relationship between The respective packet payloads (payloads) contain at least part of the same service data. The same goes for the upward direction.
  • the packet header containing the service data may be adaptively modified, such as modifying the source address, adding or stripping a layer of packet header , or increase the parity bit after adjustment and demodulation.
  • data transmission between the master ONT and the slave ONT, and between the master ONT and the OLT is performed through optical signals.
  • the above-mentioned main ONT receiving service data packets is only a functional description, and does not specifically mean that the data packets are directly received.
  • the master ONT receives the upstream optical signal from the slave ONT, and the upstream optical signal carries the upstream service data message; the master ONT receives the downstream optical signal from the OLT, and the downstream optical signal carries the downstream service data message .
  • the master ONT can obtain the corresponding uplink service data and downlink service data only after performing modulation, demodulation and analysis on the uplink optical signal and downlink optical signal.
  • the above process is expressed as the master ONT receiving uplink/downlink service data packets.
  • the uplink/downlink service data message sent from the ONT is carried in the optical signal and sent out.
  • the embodiment of this application provides a new ONT as the main ONT 600.
  • it includes uplink optical interface 601, downlink optical interface 602, ONT MAC 603, OLT MAC 608, new forwarding module 604, service module 605, memory 606 and processor 607.
  • the forwarding module 604 the service module 605 and the storage 606 are different, and these three modules will be described in detail below.
  • the functions of other units, such as the uplink optical interface 601, downlink optical interface 602, ONT MAC 603 and OLT MAC 608, unless otherwise specified, can refer to the corresponding module description in Figure 3.
  • the service module 605 is used to obtain the uplink service data message from the slave ONT.
  • the uplink service data message includes the identifier of the user terminal and the identifier of the transmission path from the user terminal to the slave ONT. At least a part of data in the service data message is sent by the user terminal to the slave ONT.
  • the service module 605 is also used to establish a transmission path correspondence table. Wherein, the transmission path correspondence table includes the correspondence between the user terminal, the transmission path identifier, and the slave ONT identifier.
  • the service module 605 is also configured to receive a downlink service data message from the OLT, the downlink service data message includes a destination address, and the destination address corresponds to a user terminal identifier; and according to the destination address corresponding to The user terminal identifier, after matching the corresponding transmission path identifier in the transmission path correspondence table, adding the transmission path identifier to the downlink service data message.
  • the memory 606 is used for storing the transmission path correspondence table.
  • the forwarding module 604 is configured to send the downlink service data message added with the transmission path identifier to the slave ONT.
  • the transmission path identifier is used to instruct the slave ONT to send the downlink service data message from the transmission path corresponding to the transmission path identifier.
  • the forwarding module 604 is further configured to query the transmission path correspondence table according to the destination address in the downlink service data packet to determine the transmission path.
  • the transmission path includes not only the transmission path between the master ONT and the slave ONT, but also the transmission path between the slave ONT and the user terminal; the transmission path identifier at least includes the transmission path indication information between the slave ONT and the user terminal.
  • the embodiment of the present application also provides a new ONT as the slave ONT 700. As shown in Figure 7 below, it includes uplink optical interface 701, user interface 702, ONT MAC 703, service module 705, memory 706 and processor 707. Compared with Fig. 4, there is no forwarding module anymore, and the function of the service module 705 will be different, and the service module 705 will be described in detail below.
  • the functions of other modules, such as the uplink optical interface 701, the user interface 702, the ONT MAC 703, the memory 706 and the processor 707, unless otherwise specified, can refer to the corresponding module description in FIG. 4 . .
  • the service module 705 is used to obtain an uplink service data message from a user terminal, add the user interface information of the service data message as a transmission path identifier to the uplink service data message, and then add the added transmission path
  • the identified uplink service data message is sent to the master ONT;
  • the service module 705 is further configured to send a first message to the master ONT, where the first message includes indication information of the length of the queue to be sent or the buffer size of at least one user terminal.
  • the slave ONT 700 no longer has a forwarding module, and the service module 705 is different from the service module 405 in Figure 4; correspondingly, the forwarding module 304 on the master ONT 600 directly controls the data forwarding path of the slave ONT 700 , the data scheduling is completed before the business data is sent to the slave ONT 700; after the slave ONT 700 receives the data from the master ONT 600, it directly sends it to the user terminal according to the path instruction carried in the data.
  • the processing flow is described below in conjunction with the structures of the master ONT 600 and the slave ONT 700 shown in FIG. 6 and FIG. 7 .
  • Step S801 receive the service data message from the user terminal from the user interface 702 from the ONT 700;
  • Step S802 The service module 705 matches or sets corresponding transmission control parameters and transmission resources according to the type of service data message (voice service, broadband access service or IPTV, etc.); will receive the user interface information of the service data message Added to the service data message as a transmission path identifier;
  • the type of service data message voice service, broadband access service or IPTV, etc.
  • said transmission path identification can be from the ONT 700 user interface information, that is, the incoming port number.
  • Step S803 ONT MAC 703 performs the PON protocol layer encapsulation processing on the ONT side to the service data message added with the transmission path identifier;
  • Step S804 Send the optical signal carrying the service data to the master ONT 600 through the uplink optical interface 701.
  • Step S805 the master ONT 600 receives the optical signal from the slave ONT 700 from the downlink optical interface 602;
  • Step S806 after the PON protocol analysis process on the OLT side is performed by the OLT MAC 608, the service data message is obtained; the service data includes the transmission path identifier of the service data message;
  • said determined transmission path not only includes the transmission path between the main ONT and the slave ONT, but also includes the transmission path between the slave ONT and the user terminal;
  • Step S807 The service module 605 matches or sets corresponding transmission control parameters and transmission resources at least according to the type of the service data message (voice service, broadband access service or IPTV, etc.) and the transmission path identifier of the service data message; Set up the user terminal, the transmission path identifier and the transmission path correspondence table of the ID from the ONT 700, and save it to the memory 606;
  • the type of the service data message voice service, broadband access service or IPTV, etc.
  • IPTV IPTV
  • Step S808 The forwarding module 604 performs Layer 2 Ethernet MAC layer forwarding and/or Layer 3 routing addressing processing according to the user terminal address information or device identification information carried in the service data message to determine the uplink transmission path;
  • Step S809 ONT MAC 603 performs the PON protocol layer encapsulation processing on the ONT side;
  • Step S810 Send the optical signal to the OLT through the uplink optical interface 601.
  • Step S901 the main ONT 600 receives an optical signal from the OLT from the upstream optical interface 601;
  • Step S902 the optical signal is analyzed and processed by the PON protocol on the ONU side by the ONT MAC 603 to obtain a service data message;
  • the service data message can be an Ethernet message or a message in other protocol formats;
  • Step S903 the service module 605 matches or sets corresponding transmission control parameters and transmission resources at least according to the type of service data message (voice service, broadband access service or IPTV, etc.);
  • Step S904 The forwarding module 604 performs Layer 2 Ethernet MAC layer forwarding and/or Layer 3 routing addressing processing according to the user terminal address information or device identification information carried in the service data message; the determined transmission path is not only Including the transmission path between the main ONT and the slave ONT, also including the transmission path between the ONT and the user terminal; and adding the identification of the transmission path between the ONT and the user terminal to the service data message;
  • Step S905 OLT MAC 608 performs PON protocol layer encapsulation processing on the OLT side for the service data message to which the transmission path identifier has been added;
  • Step S906 send the encapsulated service data message modulated on the optical signal to the destination slave ONT 700 through the downlink optical interface 602;
  • Step S907 receiving the optical signal from the master ONT 600 from the upstream optical interface 701 from the ONT 700;
  • Step S908 After the ONT MAC 703 on the ONT 700 performs the PON protocol analysis and processing on the ONU side for the optical signal, the service data message is obtained, and the service data message includes the transmission path between the ONT 700 and the user terminal logo;
  • Step S909 the service module 705 matches or sets corresponding transmission control parameters and transmission resources according to the type of the service data message; determines the user interface 702 according to the transmission path identification between the ONT 700 and the user terminal;
  • Step S910 the service data is sent from the user interface 702 to the user terminal.
  • the service module 705 on the ONT 700 can include a WIFI service module
  • the user interface 702 on the ONT 700 is a WIFI air interface
  • the terminal user is a WIFI terminal user.
  • the link channel between each user terminal and the slave ONT is distinguished by a logical link identifier, and the transmission path identifier is Logical link ID.
  • the transmission path between the user terminal and the slave ONT 700 in step S904 is exactly the WIFI logical link identifier; in step S910, service data is sent to the user terminal from the user interface 702, i.e. the WIIF air interface.
  • the master ONT 600 needs to interact with the WIFI service module to obtain WIFI air interface information and WIFI user queue information to determine the logical link identifier on the slave ONT 700 corresponding to the target user.
  • the ONT MAC 703 of the ONT 700 can directly obtain the logical link identification of the path required for sending to the target user by performing PON protocol analysis processing on the message from the ONT MAC 703 of the ONT 700, and store it in the memory 706. After the module completes the data processing, it selects the corresponding WIFI channel according to the logical link identifier and sends it to the user.
  • the transmission path identifier for receiving the WIFI service data message is the WIFI logical link identifier; in step S802, the WIFI service module transmits the logical link identifier of the path for the WIFI service data message Added to the WIFI service data message; in step S807, the service module 605 also completes the reordering of the WIFI service data message according to the transmission path identifier of the WIFI service data message.
  • the memory 606 on the main ONT 600 is also used to save WIFI messages and message queue information of multiple user terminals, and the multiple user terminals are connected to the main ONT 600 through at least one slave ONT 700; further, the slave The WIFI service module of ONT 700 can also obtain the message indicating the length of the queue to be sent or the size of the buffer from the user terminal from the user terminal, and then send the length of the queue to be sent or the size of the cache through the uplink WIFI control message The size is sent to the main ONT 600, so that the main ONT 600 can synthesize the bandwidth requirements of all user terminals, and allocate uplink bandwidth for the slave ONT 700 connected to the multiple user terminals; for matching the user terminal connected to each slave ONT 700 Broadband needs.
  • the master ONT 600 and slave ONT 700 transmit through dedicated low-latency channels.
  • the low-delay channel is relative to the normal service data transmission channel. Compared with the latter, the former can control the transmission delay better, such as higher priority and better signal robustness to ensure low delay.
  • the WIFI service module of the master ONT 600 performs unified scheduling and control on the WIFI messages and message queues of all user terminals, sends instructions to the slave ONT 700 through the downlink WIFI control message, and the WIFI service module of the slave ONT 700 according to the obtained instructions to process the parsed WIFI service data message; the processing includes determining the uplink bandwidth or priority for different WIFI user terminals.
  • the business request and business data of used WIFI user terminal are all unified scheduling and management by main ONT 600, obtain each user terminal to be sent data size in advance, can reach the bandwidth of all from ONT equipment 700 to carry out flexibly and balanced centralized scheduling and pre-allocation effects; and because the uplink WIFI control messages are exchanged between the master ONT 600 and the slave ONT 700 through a specific low-latency channel, the timely distribution of bandwidth allocation information is ensured, and each user terminal The bandwidth can be deployed in time, improving the system bandwidth utilization.
  • FIG. 10 provides a main ONT 1000 for the embodiment of the present application.
  • the master ONT 100 includes a processor 1010 , a transceiver 1020 , and a memory 1030 .
  • the processor 1010 executes computer instructions, and cooperates with the transceiver 1020 to perform the following method:
  • the uplink service data message includes a user terminal identifier and a transmission path identifier for the user terminal to access the slave ONT; at least a part of the service data message Data is sent from the ONT by the user terminal;
  • a transmission path correspondence table is established and stored in the memory 1030, wherein the transmission path correspondence table includes the correspondence between the user terminal identifier, the transmission path identifier, and the slave ONT identifier.
  • the downlink service data message includes a destination address, and the destination address corresponds to a user terminal identifier
  • FIG. 11 provides a slave ONT 1100 for the embodiment of the present application.
  • the slave ONT 100 includes a processor 1110 , a transceiver 1120 and a memory 1130 .
  • the processor 1110 executes computer instructions, and cooperates with the transceiver 1120 to perform the following method:
  • Receive the downlink service data message from main ONT, in the described service data message comprise from the transmission path identification between ONT and user terminal; Determine user interface according to described transmission path identification; In described downlink service data message The service data is sent from the user interface to the user terminal.
  • processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor can be a microprocessor, or any conventional processor.
  • the method steps in the embodiments of the present application may be implemented by means of hardware, or may be implemented by means of a processor executing software instructions.
  • the software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory (random access memory, RAM), flash memory, read-only memory (read-only memory, ROM), programmable read-only memory (programmable rom) , PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or known in the art any other form of storage medium.
  • An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium.
  • the storage medium may also be a component of the processor.
  • the processor and storage medium can be located in the ASIC.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted via a computer-readable storage medium.
  • the computer instructions may be transmitted from one website site, computer, server, or data center to another website site by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) , computer, server or data center for transmission.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (solid state disk, SSD)), etc.

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Abstract

本申请实施例公开了一种级联光网络终端ONT的处理方法。一种级联ONT的处理方法包括主ONT接收来自从ONT的上行业务数据报文，所述上行业务数据报文包含了用户终端标识以及所述用户终端接入到所述从ONT的传输路径标识；主ONT建立传输路径对应关系表，在主ONT接收到来自OLT的下行业务数据报文后，在所述传输路径对应关系表中匹配到对应的传输路径标识后，将所述传输路径标识添加到所述下行业务数据报文中后发送给从ONT，以指示所述从ONT从所述传输路径标识对应的传输路径将下行业务数据报文发送出去。本申请实施例还公开了一种ONT装置和级联ONT系统。本申请实施例揭示的方案能简化网络架构，提高级联ONT上业务数据的转发效率。

Description

一种级联ONT的处理方法、装置和系统
本申请要求于2021年7月29日提交中国国家知识产权局、申请号202110866737.1、申请名称为“一种级联ONT的处理方法、装置和系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及光通信领域，尤其涉及一种级联ONT的处理方法、装置和系统。
背景技术
无源光网络(Passive Optical Network，PON)技术是一种点到多点的光纤接入技术。PON系统可以包括光线路终端(Optical Line Terminal,OLT)、光分配网络(Optical Distribution Network，ODN)和至少一个光网络单元(Optical Network Unit，ONU)。OLT与ODN连接，ODN与多个ONU连接。如图1所示。OLT提供网络侧接口，OLT连接上层的网络侧设备(如交换机、路由器等)，下层连接一个或者多个ODN。
ODN包括用于光功率分配的无源光分光器、连接在无源光分光器和OLT之间的主干光纤，以及连接在无源光分光器和ONU之间的分支光纤，下行传输数据时，ODN将OLT下行的数据通过分光器传输到各个ONU。同样地，上行传输数据时，ODN将ONU的上行数据汇聚后传输到OLT。
一般地，OLT通常位于中心机房(center office，CO)，ONU位于用户家中或家附近。ONU提供用户侧接口，同时与ODN相连。如果ONU同时提供用户接口功能，如提供Ethernet用户接口或者传统电话业务(plain old telephone service，POTS)用户接口，则称为光网络终端(optical network termination，ONT)。为便于描述，下文统一使用ONT表示ONU和/或ONT。
由于ONT是终端设备，1个网络用户家至少有1个ONT设备，导致ONT的总数十分庞大。为避免资源浪费和降低成本，ONT硬件结构是否能简化是需要考虑的问题。
发明内容
为了简化ONT硬件结构，提高网络处理效率，本申请实施例提供了一种级联ONT的处理方法、装置和系统。
第一方面，本申请实施例提供了一种级联ONT的处理方法，包括：
在上行方向上，主ONT对来自从ONT的上行业务数据报文进行解析后获取所述上行业务数据报文中包含的用户终端标识以及所述用户终端接入到所述从ONT的传输路径标识；所述业务数据报文中的至少一部分数据是由所述用户终端发送给所述从ONT；所述主ONT建立传输路径对应关系表并保存，其中所述传输路径对应关系表包含所述用户终端标识、所述传输 路径标识和所述从ONT标识的对应关系；
在下行方向上，所述主ONT接收到来自OLT的下行业务数据报文，所述下行业务数据报文包含了目的地址，所述目的地址对应于一个用户终端标识；所述主ONT根据所述目的地址对应的用户终端标识，在所述传输路径对应关系表中匹配到对应的传输路径标识后，将所述传输路径标识添加到所述下行业务数据报文中；所述主ONT将添加了传输路径标识的下行业务数据报文发送给从ONT，所述传输路径标识用于指示所述从ONT从所述传输路径标识对应的传输路径将下行业务数据报文发送出去。
利用本实施例，主ONT直接控制从ONT的转发路径，使从ONT可以直接根据主ONT的发送的传输路径标识信息发送业务报文给用户终端，不再需要在从ONT上进行转发路径的寻址。这样，不仅提高了网络的转发效率，从ONT在硬件结构上更简化从而降低从ONT的硬件成本和处理复杂度，进而降低整个网络的建网成本。
在第一方面的第一种可能的实施方式中，该处理方法还包括：所述主ONT根据所述下行业务数据报文中的目的地址查询所述传输路径对应关系表来确定传输路径，所述传输路径不仅包括主ONT与从ONT之间的传输路径，也包括从ONT与用户终端之间的传输路径；传输路径标识至少包含所述从ONT与用户终端之间的传输路径指示信息。
结合第一方面或第一方面第一种可能的实施方式，在第一方面第二种可能的实施方式中，所述传输路径标识是从ONT上物理端口的端口号，或者无线链路的逻辑链路标识。
结合第一方面及第一方面第一种至第二种任一可能的实施方式，在第一方面第三种可能的实施方式中，所述方法还包括：所述主ONT接收所述从ONT发送的第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息；根据所述第一消息中指示的至少一个用户终端上待发送队列的长度或缓存大小给所述从ONT分配上行带宽。
结合第一方面及第一方面第一种至第四种任一可能的实施方式，在第一方面第五种可能的实施方式中，包括：所述目的地址是用户终端的MAC地址、IP地址或用户名等能标识不同用户终端的信息。
在第一方面的第一种可能的实施方式中，包括：所述传输路径对应关系表还包含所述业务数据的类型，这样不同业务类型的数据可以对应到不同的传输路径。
第二方面，本发明实施例提供了一种级联光网络终端ONT的处理方法，包括：
从ONT接收来自用户终端的上行业务数据报文，将接收所述业务数据报文的用户接口信息作为传输路径标识添加到所述上行业务数据报文中，再将添加了传输路径标识的上行业务数据报文发送给主ONT；
接收来自所述主ONT的下行业务数据报文，所述业务数据报文中包含所述从ONT与所述用户终端之间的传输路径标识；根据所述传输路径标识确定用户接口；将所述下行业务数据报文中的业务数据从用户接口发送给所述用户终端。
利用本实施例，从ONT就可以直接根据主ONT的发送的传输路径标识信息发送业务报文给用户终端，不再需要在从ONT上进行转发路径的寻址。这样，不仅提高了从ONT的转发效 率，在ONT上不设置转发模块从而降低从ONT的硬件成本。
在第二方面第一种可能的实施方式中，所述方法还包括：所述从ONT向所述主ONT发送第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息。
结合第二方面或第二方面第一种可能的实施方式，在第二方面第二种可能的实施方式中，所述方法还包括所述从ONT通过低延时通道向所述主ONT发送包含了所述指示信息的消息。
结合第二方面及第二方面第一种至第二种任一可能的实施方式，在第二方面第三种可能的实施方式中，所述传输路径标识是从ONT上物理端口的端口号，或者无线链路的逻辑链路标识。
第三方面，本发明实施例提供了一种光网络终端ONT，包括转发模块、业务模块、和存储器；
其中所述业务模块用于获得来自从ONT的上行业务数据报文，所述上行业务数据报文包含了用户终端标识以及所述用户终端接入到所述从ONT的传输路径标识；所述业务数据报文中的至少一部分数据是由所述用户终端发送给所述从ONT；建立传输路径对应关系表，其中所述传输路径对应关系表包含所述用户终端标识、所述传输路径标识和所述从ONT标识的对应关系；
所述存储器606用于存储所述传输路径对应关系表；
所述业务模块605还用于接收到来自OLT的下行业务数据报文，所述下行业务数据报文包含了目的地址，所述目的地址对应于一个用户终端标识；并根据所述目的地址对应的用户终端标识，在所述传输路径对应关系表中匹配到对应的传输路径标识后，将所述传输路径标识添加到所述下行业务数据报文中；
所述转发模块604用于将添加了传输路径标识的下行业务数据报文发送给从ONT，所述传输路径标识用于指示所述从ONT从所述传输路径标识对应的传输路径将下行业务数据报文发送出去。
在第三方面第一种可能的实施方式中，所述转发模块604还用于根据所述下行业务数据报文中的目的地址查询所述传输路径对应关系表来确定传输路径，所述传输路径不仅包括主ONT与从ONT之间的传输路径，也包括从ONT与用户终端之间的传输路径；传输路径标识至少包含所述从ONT与用户终端之间的传输路径指示信息。
结合第三方面及第三方面第一种可能的实施方式，所述传输路径标识是从ONT上物理端口的端口号，或者无线链路的逻辑链路标识。
结合第三方面或第三方面第一种可能的实施方式，在第三方面第二种可能的实施方式中，所述方法还包括：所述业务模块605还用于接收所述从ONT发送的第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息；根据所述第一消息中指示的至少一个用户终端上待发送队列的长度或缓存大小给所述从ONT分配上行带宽。
结合第三方面及第三方面第一种至第二种任一可能的实施方式，在第三方面第三种可能 的实施方式中，包括：所述目的地址是用户终端的MAC地址、IP地址或用户名等能标识不同用户终端的信息。
结合第三方面及第三方面第一种至第三种任一可能的实施方式，在第三方面第四种可能的实施方式中，包括：所述传输路径对应关系表还进一步包含所述业务数据的类型，这样不同业务类型的数据可以对应到不同的传输路径。
第四方面，本发明实施例提供了一种从光网络终端ONT，包括业务模块705，
所述业务模块用于获得来自用户终端的上行业务数据报文，将所述业务数据报文的用户接口信息作为传输路径标识添加到所述上行业务数据报文中，再将添加了传输路径标识的上行业务数据报文发送给主ONT；
接收来自所述主ONT的下行业务数据报文，所述业务数据报文中包含所述从ONT与所述用户终端之间的传输路径标识；根据所述传输路径标识确定用户接口，以用于所述下行业务数据报文中的业务数据从用户接口被发送出去。
在第四方面第一种可能的实施方式中，所述业务模块还用于向所述主ONT发送第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息。
第五方面，本发明实施例提供了一种主ONT，包括处理器、收发器，和存储器。在该接入点运行时，处理器执行计算机指令，协同所述收发器执行如第一方面或第一方面任一可能的实施方式所述的方法。
第六方面，本发明实施例提供了一种从ONT，包括处理器、收发器，和存储器。在该接入点运行时，处理器执行计算机指令，协同所述收发器执行如第二方面或第二方面任一可能的实施方式所述的方法。
第七方面，本发明实施例提供了一种级联光网络终端ONT的系统，其特征在于，包含至少一个上述任一的主ONT，和至少一个上述任一的从ONT。
利用本实施例，在该系统中，主ONT直接控制从ONT的转发路径，使从ONT可以直接根据主ONT的发送的传输路径标识信息发送业务报文给用户终端，不再需要在从ONT上进行转发路径的寻址。这样，不仅提高了系统的处理效率，从ONT在硬件结构上更简化从而降低从ONT的硬件成本和处理复杂度，进而降低整个网络的建网成本。
附图说明
图1为无源光网络架构示意图；
图2为一种级联ONT网络示意图；
图3为一种主ONT的结构示意图；
图4为一种从ONT的结构示意图；
图5为本发明实施例提供的一种级联ONT的处理方法流程示意图；
图6为本发明实施例提供的一种主ONT的结构示意图；
图7为本申请实施例提供的一种从ONT的结构示意图；
图8为本申请实施例提供的一种级联ONT在上行方向的处理方法流程示意图；
图9为本申请实施例提供的一种级联ONT在下行方向的处理方法流程示意图；
图10为本发明实施例提供的另一种主ONT的结构示意图；
图11为本申请实施例提供的另一种从ONT的结构示意图。
具体实施方式
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”、“第四”等用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便这里描述的本申请的实施例例如能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
PON是一种点到多点的光接入技术。PON接口为采用PON的通信网络中用于数据连接的端口。PON接口连接的传输媒介为光纤，可用于接收或发送光信号。举例说明，如图1所示，OLT和ONT之间通过PON接口连接，OLT可通过一个PON接口连接多个ONT。用户各种终端通过ONT连接到外部网络。当终端比较多时，可能需要先组件一个内部网络然后连接到ONT。
为满足用户家庭内部多终端的高质量上网需求，一种家庭全光纤网络被提出。这种网络是设置一个主ONT设备作为网关负责家庭网络和上层网络的出入节点，主ONT级联多个从ONT，从ONT分布在家庭各个角落提供用户接入网络的接口。如图2所示，OLT和主ONT、主ONT和从ONT之间都是光纤连接。一般地，从OLT到ONT的方向称为下行方向，从ONT到OLT的方向称为上行方向。下行方向的信号发送采用广播方式，上行方式信号发送采用时分复用(time division multiplexing，TDM)方式。主ONT为各从ONT的上行传输时隙分配进行动态带宽分配(dynamic bandwidth assignment，DBA)，都遵从无源光网络PON协议。所述主ONT和从ONT是从上下游的相对关系来命名的，也是为了确认两者。在有些场景，主ONT可以认为是网关，从ONT是应用节点(application point,AP)。但不管是什么形态和名称，只要是在一个OLT下面，执行了ONT的功能的设备都在本实施例的保护范围内。
如图3所示，主ONT 300包括上行光接口301、下行光接口302、ONT媒体接入控制(media access control，MAC)模块303(下文简称ONT MAC)、OLT媒体接入控制模块308(下文简称OLT MAC)、转发模块304、业务模块305、存储器306和处理器307。
其中上行光接口301用于连接上层光设备；下行光接口302用于连接下层光设备。
ONT MAC 303包括一个或多个PON MAC芯片，用于对主ONT 300和上层设备之间的交互报文进行PON媒体接入控制(media access control，MAC)层的协议处理，对PON报文的进行 解析或封装。
OLT MAC 308包括一个或多个PON MAC芯片，用于对主ONT 300和下层设备之间的交互报文进行PON媒体接入控制(media access control，MAC)层的协议处理，对报文进行解析或封装。
转发模块304包括用于实现转发功能的组件或芯片，可用于实现二层和/或三层网络协议的转发比如局域网交换(LAN switch,LSW)转发或IP路由(IP Routing)等，还可以进行网络处理(network process,NP)或流量管理(traffic management,TM)等。
业务模块305可以包括提供语音电话接入功能的POTS(Plain Old Telephone Service)模块、提供宽带接入功能的GE(Gigabit Ethernet)模块、提供IP电视(Internet Protocol television，IPTV)业务的IPTV模块和提供无线接入功能的WIFI(Wireless Fidelity)模块中的一个或多个，用于业务数据控制层面的管理，包括业务质量(QoS)管理、端口寻址、业务优先级设置或用户权项验证管理等，主要由软件来实现。
存储器306用来存储上下行报文和中间数据，比如可以是双倍数据速率(double data rate,DDR)存储器，随机存取存储器(random access memory，RAM)或闪存等。
处理器307用于协同业务模块305和转发模块304，对业务数据进行处理。
如图4所示，从ONT 400一般包括上行光接口401、用户接口402、ONT MAC 403、转发模块404、业务模块405、存储器406和处理器407。其中上行光接口401用于连接主ONT 300；用户接口402连接用户终端设备，用于将用户终端设备接入网络，可以是物理端口或空口；ONT MAC 403、转发模块404、业务模块405、存储器406和处理器407与上面描述的主ONT上的对应模块功能303-307类似，不再赘述。
可选的，主ONT 300也可以包括至少一个用户接口；主ONT 300和/或从ONT 400还可以包括一个或多个用于进行以太网MAC层协议处理和以太网物理层协议处理的模块。
由于从ONT和主ONT都设置有转发模块，在转发环节部分处理是重复的，处理流程不简洁，硬件资源利用率不充分。
图5位为本申请实施例提供一种级联ONT的处理方法。如图5所示包括如下步骤。
步骤501：主ONT接收来自从ONT的上行业务数据报文，所述上行业务数据报文包含了用户终端标识以及所述用户终端接入到所述从ONT的传输路径标识；所述业务数据报文中的至少一部分数据是由所述用户终端发送给所述从ONT；
步骤502：所述主ONT建立传输路径对应关系表并保存，其中所述传输路径对应关系表包含所述用户终端标识、所述传输路径标识和所述从ONT标识的对应关系。
所述传输路径对应关系表还可以进一步包含所述业务数据的类型，这样不同业务类型的数据可以对应到不同的传输路径，来实现更精细的路径选择。如下表1所示。
表1：传输路径对应关系表1
业务数据类型 终端用户标识 从ONT标识 传输路径标识
业务1 用户A 11111 01
业务1 用户B 22222 01
业务2 用户C 11111 03
业务3 用户D 44444 04
步骤503：所述主ONT接收到来自OLT的下行业务数据报文，所述下行业务数据报文包含了目的地址，所述目的地址对应于一个用户终端标识；
所述目的地址可以是用户终端的MAC地址、IP地址或用户名等能标识不同用户终端的信息。
步骤504：所述主ONT根据所述目的地址对应的用户终端标识，在所述传输路径对应关系表中匹配到对应的传输路径标识后，将所述传输路径标识添加到所述下行业务数据报文中；
步骤505：所述主ONT将添加了传输路径标识的下行业务数据报文发送给从ONT，所述传输路径标识用于指示所述从ONT从所述传输路径标识对应的传输路径将下行业务数据报文发送出去。
作为一种实施例，在步骤503后还包括步骤5031(图中未示出)，所述主ONT根据所述下行业务数据报文中的目的地址查询所述传输路径对应关系表，确定传输路径。其中，所述传输路径不仅包括主ONT与从ONT之间的传输路径，也包括从ONT与用户终端之间的传输路径。传输路径标识至少包含所述从ONT与用户终端之间的传输路径指示信息。
从ONT和用户终端可以通过以太网线或双绞线等有线连接，也可以通过WIFI和蓝牙等无线方式连接。在有线连接场景中，上述的用于标识从ONT和用户终端传输路径的传输路径标识可以是从ONT上物理端口的端口号，用来区分各物理线路；其中由于ONT和一个用户终端之间传输数据出端口和入端口都是指同一个物理端口，所述端口号对应的物理端口即是ONT的出端口也是入端口。在无线连接场景中，上述的用于标识从ONT和用户终端传输路径的传输路径标识也可以是逻辑链路标识，用于区分各无线链路。这两种场景对应的传输路径对应关系表示例分别如表2和表3所示。
表2：传输路径对应关系表2
业务数据类型 终端用户标识 从ONT ID 从ONT端口号
业务1 用户A 11111 #01
业务1 用户B 22222 #02
业务2 用户C 11111 #03
业务3 用户D 44444 #04
表3：传输路径对应关系表3
业务数据类型 终端用户标识 从ONT ID 从ONT上的逻辑链路标识
业务1 用户A 11111 011
业务1 用户B 22222 012
业务2 用户C 11111 013
业务3 用户D 44444 014
示例性地，主ONT与从ONT之间的传输路径可以通过从ONT的标识ID或从ONT的MAC地址来标识；从ONT与用户终端之间的传输路径可以通过从ONT的出端口号来标识。主ONU上建立所述传输路径对应关系表后，就相当于，在主ONT将各从ONT的用户接口虚拟到了本地，就好像管理本地的用户接口一样，对到达各从ONT的用户接口的传输路径直接进行管理。从ONT就可以直接根据主ONT的发送的传输路径标识信息发送业务报文给用户终端，不再需要在从ONT上进行转发路径的寻址。这样，不仅提高了从ONT的转发效率，也可以在ONT上不设置转发模块从而降低从ONT的硬件成本，进而降低整个网络的建网成本。
进一步地，所述处理方法还可以包括：所述主ONT接收来自从ONT的包含了第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息，所述主ONT根据所述第一消息中指示的至少一个用户终端上待发送队列的长度或缓存大小指示信息给从ONT分配上行带宽。
具体地，所述主ONT可以通过多个从ONT获得每个从ONT下连接的所有用户终端待发送队列的长度或缓存大小，来评估各用户终端即将要发送的数据量大小，进而获得连接这些用户终端的从ONT即将发送的上行数据量的大小来判断其带宽需求；所述主ONT就能根据ONT的带宽需求给其分配合适的上行带宽。
对应地，在从ONT这侧，在上行方向上，所述从ONT接收来自用户终端的上行业务数据报文，将接收所述业务数据报文的用户接口信息作为传输路径标识添加到所述上行业务数据报文中，再将添加了传输路径标识的上行业务数据报文发送给所述主ONT；。在下行方向上，所述从ONT接收来自所述主ONT的下行业务数据报文，所述业务数据报文中包含所述从ONT与所述用户终端之间的传输路径标识；根据所述传输路径标识确定用户接口；将所述下行业务数据报文中的业务数据从用户接口发送给所述用户终端。
进一步地，所述方法还可以包括：所述从ONT向所述主ONT发送第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息。
需要说明的是，在下行方向上，主ONT接收到的来自OLT的下行数据业务报文，到最后从ONT发送给用户终端将下行数据业务报文并不是包含或被包含的关系，而是指在各自的报文载荷(payload)中包含了至少一部分相同的业务数据。上行方向上同理。本领域普通技术人员应该理解，同一份业务数据，在经过不同网络节点时，都可能会对包 含该业务数据的报文头进行适应性修改，比如修改源地址、增加或剥离一层报文头、或调整解调后增加校验位等。由于这些不同点不是本发明实施例的主要关注点，所以全文中即使在不同设备内的处理步骤中出现了同一个报文名称，比如从ONT接收到数据业务报文，经过处理后转发所述数据业务报文，并不能限制理解为从ONT将接受到的数据业务报文原封不动的转发，即使对报文头有一定调整也在该实施例表达的范围之内。
另外，主ONT和从ONT，以及主ONT和OLT之间都是通过光信号进行数据传输。上文中的主ONT接收业务数据报文只是从功能上进行的描述，并不是特指直接接收的就是数据报文。本领域普通技术人员应该理解，主ONT接收来自从ONT的上行光信号，上行光信号承载了上行业务数据报文；主ONT接收来自OLT的下行光信号，下行光信号承载了下行业务数据报文。主ONT只要对上行光信号和下行光进行调制解调和解析后能得到对应的上行业务数据和下行业务数据。本实施为了简化描述，将上述过程表述为主ONT接收上/下行业务数据报文。同时，从ONT发送上/下行业务数据报文也应该理解是承载在光信号中发送出去。
本申请实施例提供一种新的ONT，作为主ONT 600。如图6所示，包括上行光接口601、下行光接口602、ONT MAC 603、OLT MAC 608、新转发模块604、业务模块605、存储器606和处理器607。相对于图3，至少在于转发模块604、业务模块605和存储器606的功能会有不同，下文对这3个模块进行具体说明。其他的单元，比如上行光接口601、下行光接口602、ONT MAC 603和OLT MAC 608的功能，除非有特别说明，都可以参考图3对应的模块描述。
其中，所述业务模块605用于获得来自从ONT的上行业务数据报文。所述上行业务数据报文包含了用户终端标识以及所述用户终端接入到所述从ONT的传输路径标识。所述业务数据报文中的至少一部分数据是由所述用户终端发送给所述从ONT。所述业务模块605还用于建立传输路径对应关系表。其中，所述传输路径对应关系表包含所述用户终端、所述传输路径标识和所述从ONT标识的对应关系。所述业务模块605还用于接收到来自OLT的下行业务数据报文，所述下行业务数据报文包含了目的地址，所述目的地址对应于一个用户终端标识；并根据所述目的地址对应的用户终端标识，在所述传输路径对应关系表中匹配到对应的传输路径标识后，将所述传输路径标识添加到所述下行业务数据报文中。
所述存储器606用于存储所述传输路径对应关系表。
所述转发模块604用于将添加了传输路径标识的下行业务数据报文发送给从ONT。所述传输路径标识用于指示所述从ONT从所述传输路径标识对应的传输路径将下行业务数据报文发送出去。所述转发模块604还用于根据所述下行业务数据报文中的目的地址查询所述传输路径对应关系表来确定传输路径。所述传输路径不仅包括主ONT与从ONT之间的传输路径，也包括从ONT与用户终端之间的传输路径；传输路径标识至少包含所述从ONT与用户终端之间的传输路径指示信息。
本申请实施例还提供一种新的ONT，作为从ONT 700。如下图7所示，包括上行光接口701、用户接口702、ONT MAC 703、业务模块705、存储器706和处理器707。相对 于图4，不再具有转发模块，并且业务模块705的功能会有不同，下面对业务模块705进行详细说明。其他的模块，比如上行光接口701、用户接口702、ONT MAC 703、存储器706和处理器707的功能，除非有特别说明，都可以参考图4对应的模块描述。。
所述业务模块705用于获得来自用户终端的上行业务数据报文，将所述业务数据报文的用户接口信息作为传输路径标识添加到所述上行业务数据报文中，再将添加了传输路径标识的上行业务数据报文发送给主ONT；
接收来自所述主ONT的下行业务数据报文，所述业务数据报文中包含所述从ONT与所述用户终端之间的传输路径标识；根据所述传输路径标识确定用户接口，以用于所述下行业务数据报文中的业务数据从用户接口被发送出去。
所述业务模块705还用于向所述主ONT发送第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息。
相对图4，从ONT 700不再具有转发模块，并且业务模块705和图4中的业务模块405有一定差别；对应地，在主ONT 600上的转发模块304直接管控从ONT 700的数据转发路径，将业务数据发送给从ONT 700之前就完成了数据的调度；从ONT 700接收到的来自主ONT 600的数据后，直接按照数据中携带的路径指示发送给用户终端。
下面结合图6和图7所示的主ONT 600和从ONT 700的结构对处理流程进行说明。
在上行方向上，如图8所示，包括步骤S801-S811：
步骤S801：从ONT 700从用户接口702接收来自用户终端的业务数据报文；
步骤S802：业务模块705根据业务数据报文的类型(语音业务、宽带接入业务或IPTV等)，匹配或设置对应的传输控制参数和传输资源；将接收所述业务数据报文的用户接口信息作为传输路径标识添加到所述业务数据报文中；
其中所述传输路径标识可以是从ONT 700用户接口信息，即入端口号。
步骤S803:ONT MAC 703对添加了传输路径标识的业务数据报文进行ONT侧的PON协议层封装处理；
步骤S804：通过上行光接口701将携带有业务数据的光信号发送给主ONT 600。
步骤S805：主ONT 600从下行光接口602接收来自从ONT 700的光信号；
步骤S806：由OLT MAC 608进行OLT侧的PON协议解析处理后，得到业务数据报文；所述业务数据包含了所述业务数据报文的传输路径标识；；
其中所述确定的传输路径不仅包括主ONT与从ONT之间的传输路径，也包括从ONT与用户终端之间的传输路径；
步骤S807：业务模块605至少根据业务数据报文的类型(语音业务、宽带接入业务或IPTV等)和所述业务数据报文的传输路径标识，匹配或设置对应的传输控制参数和传输资源；建立所述用户终端、所述传输路径标识和所述从ONT 700的ID的传输路径对应关系表，并保存到存储器606；
步骤S808：转发模块604根据业务数据报文中携带的用户终端地址信息或设备标志信息等，进行二层以太网MAC层转发和/或三层路由寻址处理，确定上行传输路径；
步骤S809：ONT MAC 603进行ONT侧的PON协议层封装处理；
步骤S810：通过上行光接口601将光信号发送给OLT。
在下行方向上，如图9所示，包括步骤S901-S911：
步骤S901：主ONT 600从上行光接口601接收到来自OLT的光信号；
步骤S902：由ONT MAC 603对光信号进行ONU侧的PON协议解析处理，得到业务数据报文；所述业务数据报文可以是以太网报文或者时其他协议格式报文；
步骤S903：业务模块605至少根据业务数据报文的类型(语音业务、宽带接入业务或IPTV等)，匹配或设置对应的传输控制参数和传输资源；
步骤S904：转发模块604根据业务数据报文中携带的用户终端地址信息或设备标志信息等，进行二层以太网MAC层转发和/或三层路由寻址处理；其中所述确定的传输路径不仅包括主ONT与从ONT之间的传输路径，也包括从ONT与用户终端之间的传输路径；并将从ONT与用户终端之间的传输路径标识添加到所述业务数据报文中；
步骤S905：OLT MAC 608对添加了传输路径标识的业务数据报文进行OLT侧的PON协议层封装处理；
步骤S906：通过下行光接口602将调制在光信号上的进行封装后的业务数据报文发送给目的从ONT 700；
步骤S907：从ONT 700从上行光接口701接收到来自主ONT 600的光信号；
步骤S908：由从ONT 700上的ONT MAC 703对光信号进行ONU侧的PON协议解析处理后，得到业务数据报文，所述业务数据报文中包含从ONT 700与用户终端之间的传输路径标识；
步骤S909：业务模块705根据业务数据报文的类型，匹配或设置对应的传输控制参数和传输资源；根据所述从ONT 700与用户终端之间的传输路径标识确定用户接口702；
步骤S910：业务数据从用户接口702发送给用户终端。
进一步地，所述从ONT 700上的业务模块705可以包括WIFI业务模块，所述ONT 700上的用户接口702是WIFI空口，所述终端用户就是WIFI终端用户。在处理WIFI业务时，由于WIFI业务数据是通过空口以无线信号的方式发射出去的，每个用户终端和从ONT之间的链接通道是通过逻辑链路标识来区分的，所述传输路径标识就是逻辑链路标识。
因此，在下行方向上，步骤S904中用户终端和从ONT 700之间的传输路径就是WIFI逻辑链路标识；在步骤S910中，业务数据从用户接口702，即WIIF空口，发送给用户终端。
进一步地，主ONT 600需要和WIFI业务模块进行交互，获取WIFI空口信息和WIFI用户队列信息，来确定目标用户对应的从ONT 700上的逻辑链路标识。
通过该实施例所述的方案，从ONT 700的ONT MAC 703对报文进行PON协议解析处理就能直接获得发送给目标用户所需路径的逻辑链路标识，存入到存储器706，在WIFI业务模块完成数据处理后根据所述逻辑链路标识选择对应的WIFI通道发送给用户。
对应地，在上行方向上，接收所述WIFI业务数据报文的传输路径标识就是WIFI逻辑链路标识；步骤S802中，WIFI业务模块将传输所述WIFI业务数据报文的路径的逻辑链路标识添加到WIFI业务数据报文中；步骤S807中，业务模块605还要根据所述WIFI业务数据报文的传输路径标识，完成WIFI业务数据报文的重排序。
进一步地，主ONT 600上的存储器606还用于保存多个用户终端的WIFI报文和报文队列信息，所述多个用户终端通过至少一个从ONT 700连接到主ONT 600；进一步地，从ONT 700的WIFI业务模块还可以从用户终端获得指示了所述从用户终端上待发送队列的长度或缓存的大小的消息，然后通过上行WIFI控制报文把所述待发送队列的长度或缓存的大小发给主ONT 600，这样主ONT 600可以综合所有用户终端的带宽需求，为连接所述多个用户终端的从ONT 700分配上行带宽；以用于匹配连接每个从ONT 700的用户终端的宽带需求。其中，由于WIFI控制报文对时延要求较高，主ONT 600和从ONT 700通过专用低时延通道进行传输。所述低延迟通道是相对正常业务数据传输通道来说的，前者相对后者在传输延迟上能控制的更好，比如优先级更高、信号鲁棒性更好来保证低延迟等。
主ONT 600的WIFI业务模块对所有用户终端的WIFI报文和报文队列进行统一调度和控制，通过下行WIFI控制报文发送指示给从ONT 700，从ONT 700的WIFI业务模块根据获得的指示信息来对解析后的WIFI业务数据报文进行处理；所述处理包括为不同WIFI用户终端确定上行带宽、或优先级等。
利用本实施例的方案，由于所用WIFI用户终端的业务请求和业务数据都由主ONT 600统一调度和管理，提前获取各用户终端待发送数据大小，能达到对所有从ONT设备700的带宽进行灵活和均衡的集中调度和预分配的效果；并且由于主ONT 600和从ONT 700之间交互上行行WIFI控制报文是通过特定的低延时通道，保证了带宽分配信息的及时发放，各用户终端的带宽就能及时被调配，提升了系统带宽利用率。
图10为本申请实施例提供了一种主ONT 1000。如图10所示，主ONT100包括处理器1010、收发器1020，和存储器1030。在该接入点运行时，处理器1010执行计算机指令，协同所述收发器1020执行如下方法：
接收来自从ONT的上行业务数据报文，所述上行业务数据报文包含了用户终端标识以及所述用户终端接入到所述从ONT的传输路径标识；所述业务数据报文中的至少一部分数据是由所述用户终端发送给所述从ONT；
建立传输路径对应关系表并保存到所述存储器1030，其中所述传输路径对应关系表包含所述用户终端标识、所述传输路径标识和所述从ONT标识的对应关系。
接收到来自OLT的下行业务数据报文，所述下行业务数据报文包含了目的地址，所述目的地址对应于一个用户终端标识；
根据所述目的地址对应的用户终端标识，在所述传输路径对应关系表中匹配到对应的传输路径标识后，将所述传输路径标识添加到所述下行业务数据报文中；
将添加了传输路径标识的下行业务数据报文发送给从ONT，所述传输路径标识用于指示所述从ONT从所述传输路径标识对应的传输路径将下行业务数据报文发送出去。
图11为本申请实施例提供了一种从ONT 1100。如图11所示，从ONT100包括处理器1110、收发器1120和存储器1130。在该接入点运行时，处理器1110执行计算机指令，协同所述收发器1120执行如下方法：
接收来自用户终端的上行业务数据报文，将接收所述业务数据报文的用户接口信息作为传输路径标识添加到所述上行业务数据报文中，再将添加了传输路径标识的上行业务数据报文发送给主ONT；
接收来自主ONT的下行业务数据报文，所述业务数据报文中包含从ONT与用户终端之间的传输路径标识；根据所述传输路径标识确定用户接口；将所述下行业务数据报文中的业务数据从用户接口发送给用户终端。
上述两个实施中的各步骤中具体动作的细化可以参考上文图5，图8和图9对应的实施例，只是执行主体的不同，其他基本相同，不再赘述。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read-only memory，ROM)、可编程只读存储器(programmable rom，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机指令可以从一个 网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
最后应说明的是：以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (21)

  1. 一种级联光网络终端ONT的处理方法，其特征在于，包括：
    主ONT接收来自从ONT的上行业务数据报文，所述上行业务数据报文包含了用户终端的标识以及所述用户终端接入到所述从ONT的传输路径标识；所述业务数据报文中的至少一部分数据是由所述用户终端发送给所述从ONT的；
    所述主ONT建立传输路径对应关系表并保存，其中，所述传输路径对应关系表包含所述用户终端标识、所述传输路径标识和所述从ONT标识的对应关系；
    所述主ONT接收到来自光线路终端OLT的下行业务数据报文，所述下行业务数据报文包含了目的地址，所述目的地址对应于一个用户终端标识；
    所述主ONT根据所述目的地址对应的用户终端标识，在所述传输路径对应关系表中匹配到对应的传输路径标识后，将所述传输路径标识添加到所述下行业务数据报文中；
    所述主ONT将添加了所述传输路径标识的所述下行业务数据报文发送给从ONT，所述传输路径标识用于指示所述从ONT从所述传输路径标识对应的传输路径将下行业务数据报文发送出去。
  2. 如权利要求1所述的处理方法，其特征在于，还包括：所述主ONT根据所述下行业务数据报文中的目的地址查询所述传输路径对应关系表来确定传输路径，所述传输路径包括主ONT与从ONT之间的、以及从ONT与用户终端之间的传输路径；所述传输路径标识至少包含所述从ONT与用户终端之间的传输路径指示信息。
  3. 如权利要求2所述的处理方法，其特征在于所述传输路径标识是从ONT上物理端口的端口号，或者无线链路的逻辑链路标识。
  4. 如权利要求1至3任一所述的处理方法，其特征在于，所述方法还包括：
    所述主ONT接收所述从ONT发送的第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息；
    所述主ONT根据所述第一消息给所述从ONT分配上行带宽。
  5. 如权利要求1至4任一所述所述的处理方法，其特征在于，包括：所述目的地址是用户终端的MAC地址、IP地址或用户名等能标识不同用户终端的信息。
  6. 如权利要求1至权5任一所述的处理方法，其特征在于，包括：所述传输路径对应关系表还包含所述业务数据的类型。
  7. 一种级联光网络终端ONT的处理方法，其特征在于，包括：
    从ONT接收来自用户终端的上行业务数据报文，将接收所述业务数据报文的用户接口信息作为传输路径标识添加到所述上行业务数据报文中，再将添加了传输路径标识的上行业务数据报文发送给主ONT；
    接收来自所述主ONT的下行业务数据报文，所述业务数据报文包含所述从ONT与所 述用户终端之间的传输路径标识；根据所述传输路径标识确定用户接口；将所述下行业务数据报文中的业务数据从所述用户接口发送给所述用户终端。
  8. 如权利要求7所述的处理方法，其特征在于，所述方法还包括：所述从ONT向所述主ONT发的第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息。
  9. 如权利要求8所述的处理方法，其特征在于，所述方法还包括所述从ONT通过低延时通道向所述主ONT发送包含了所述指示信息的消息。
  10. 如权利要求7至9任一所述的处理方法，其特征在于，所述传输路径标识是从ONT上物理端口的端口号，或者无线链路的逻辑链路标识。
  11. 一种光网络终端ONT，其特征在于，包括转发模块604、业务模块605和存储器606，其中：
    所述业务模块605用于获得来自从ONT的上行业务数据报文，所述上行业务数据报文包含了用户终端标识以及所述用户终端接入到所述从ONT的传输路径标识；所述业务数据报文中的至少一部分数据是由所述用户终端发送给所述从ONT的；建立传输路径对应关系表，其中所述传输路径对应关系表包含所述用户终端标识、所述传输路径标识和所述从ONT标识的对应关系；
    所述存储器606用于存储所述传输路径对应关系表；
    所述业务模块605还用于接收到来自OLT的下行业务数据报文，所述下行业务数据报文包含了目的地址，所述目的地址对应于一个用户终端标识；并根据所述目的地址对应的用户终端标识，在所述传输路径对应关系表中匹配到对应的传输路径标识后，将所述传输路径标识添加到所述下行业务数据报文中；
    所述转发模块604用于将添加了传输路径标识的下行业务数据报文发送给从ONT，所述传输路径标识用于指示所述从ONT从所述传输路径标识对应的传输路径将下行业务数据报文发送出去。
  12. 如权利要求11所述的ONT，其特征在于，所述转发模块604还用于根据所述下行业务数据报文中的目的地址查询所述传输路径对应关系表来确定传输路径，所述传输路径包括主ONT与从ONT之间的、以及从ONT与用户终端之间的传输路径；传输路径标识至少包含所述从ONT与用户终端之间的传输路径指示信息。
  13. 如权利要求12所述的ONT，其特征在于，所述传输路径标识是从ONT上物理端口的端口号，或者无线链路的逻辑链路标识。
  14. 如权利要求1至3任一所述的ONT，其特征在于，所述方法还包括：所述业务模块605还用于接收所述从ONT发送的第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息；根据所述第一消息给所述从ONT分配上行带宽。
  15. 如权利要求11至14任一所述所述的ONT，其特征在于，包括：所述目的地址是 用户终端的MAC地址、IP地址或用户名等能标识不同用户终端的信息。
  16. 如权利要求11所述的ONT，其特征在于，包括：所述传输路径对应关系表还进一步包含所述业务数据的类型。
  17. 一种从光网络终端ONT，其特征在于，包括业务模块705，
    所述业务模块705用于获得来自用户终端的上行业务数据报文，将所述业务数据报文的用户接口信息作为传输路径标识添加到所述上行业务数据报文中，再将添加了传输路径标识的上行业务数据报文发送给主ONT；
    接收来自所述主ONT的下行业务数据报文，所述业务数据报文中包含所述从ONT与所述用户终端之间的传输路径标识；根据所述传输路径标识确定用户接口，以用于所述下行业务数据报文中的业务数据从用户接口被发送出去。
  18. 如权利要求17所述的ONT，其特征在于，所述业务模块705还用于向所述主ONT发送第一消息，所述第一消息包含了至少一个用户终端上待发送队列的长度或缓存大小的指示信息。
  19. 一种主ONT 1000，包括处理器1010、收发器1020和存储器1030；在所述主ONT1000运行时，处理器1010执行计算机指令，协同所述收发器1020执行如权利要求1至6任一所述的方法。
  20. 一种从ONT 1100，包括处理器1110、收发器1120，和存储器1130；在该接入点运行时，处理器1110执行计算机指令，协同所述收发器1120执行如权利要求7至10任一所述的方法。
  21. 一种级联光网络终端ONT的系统，其特征在于，包含至少一个如权利要求11至16和权利要求18任一所述的主ONT，和至少一个如权利要求17至18和权利要求20任一所述的从ONT。
PCT/CN2022/094639 2021-07-29 2022-05-24 一种级联ont的处理方法、装置和系统 WO2023005378A1 (zh)

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CN110809203A (zh) * 2019-10-15 2020-02-18 四川天邑康和通信股份有限公司 一种主从式ont来扩展ftth网络的系统及方法
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