WO2018049613A1

WO2018049613A1 - Data communication method, apparatus and system

Info

Publication number: WO2018049613A1
Application number: PCT/CN2016/099075
Authority: WO
Inventors: 高建河; 高波; 吴徐明; 殷锦蓉; 曾小飞; 付生猛
Original assignee: 华为技术有限公司
Priority date: 2016-09-14
Filing date: 2016-09-14
Publication date: 2018-03-22

Abstract

Disclosed are communication method, apparatus and system for a passive optical network. The method comprises: an ONU sending a registration request message, the registration request message comprising a first port identification (Port 1) of the ONU and a first virtual Media Access Control (vMAC1) address of the ONU; the ONU receiving a first Logical Link Identification (LLID1); the ONU sending a message comprising capability set information, the capability set information of the ONU comprising other port identifications (Port x) of the ONU and the mapping of other vMACx addresses of the ONU, where x is an integer greater than 1, or the message of the capability set information is a registration acknowledgement message. The problem of port management of a multi-port ONU by an OLT in a next-generation PON system is solved, thereby realizing further management and configuration of the ONU through the port recognition of the multi-port ONU by the OLT, greatly simplifying the management process of the ONU and improving the reliability of the system.

Description

Data communication method, device and system

Technical field

The present invention relates to the field of optical communication technologies, and in particular, to a data communication method, apparatus, and system.

Background technique

Passive Optical Network (PON) technology is a point-to-multipoint fiber access technology. With the continuous development of technology, EPON (Ethernet Passive Optical Network) and GPON have emerged. (Gigabit passive Optical Network, Gigabit-capacity passive optical network) and NG PON (Next-Generation PON). 1 shows a network structure of an existing EPON. The EPON 100 may include at least one optical line terminal (OLT) 110, an optical distribution network 120 (ODN), and a plurality of optical network units (ONUs) 130. The ODN sends Ethernet packets to multiple ONUs.

In the EPON registration process, as shown in FIG. 1 , an ONU communicates with the OLT through one of its own ports. When the OLT successfully receives the registration request message sent by the ONU from the port, the OLT sends the registration request message to the port according to the registration request message. A logical link identifier LLID is assigned to identify the traffic flow in the ONU. In the EPON system, an ONU corresponds to a port, so the OLT can identify the service flow sent by the ONU through the port of the registration request message sent. In order to further expand the application of PON and meet the greater bandwidth demand in the future, based on the original EPON and 10G EPON, a 50G EPON or 100G EPON system is proposed. In the 50G EPON or 100G EPON system, since one ONU can have multiple ports of different wavelengths, 50G or 100G service flows sent by the OLT, the operating rate of each port of the ONU is 25Gbps, and the ONU needs 2 or 4 The ports share the 50G or 100G service flow. The current OLT is a management process for the registration of a single-port ONU, even if the OLT follows the existing single-port ONU. After the process is completed, the OLT still cannot identify which registered ports belong to the same ONU, and the OLT cannot implement further management and configuration of the multi-port ONU. That is, the OLT pair in the next-generation PON system. The problem of port management of ONUs with multiple ports needs to be resolved.

Summary of the invention

The embodiment of the present invention provides a data communication method, a related device, and a system, which are used to solve the problem of port management of an OLT to a plurality of port ONUs in a next-generation PON system, so that the OLT recognizes the port of the multi-port ONU, and further The further management and configuration of the ONU is implemented, which greatly simplifies the management process of the ONU and improves the reliability of the system.

In one aspect, an embodiment of the present application provides a data communication method, which is applied to a passive optical network system, where the method includes:

The optical network unit ONU sends a registration request message, where the registration request message includes: the first port identifier Port1 of the ONU and the first virtual medium intervention control vMAC1 address of the ONU; and the ONU receives the first logical link identifier LLID1 The ONU sends a message including capability set information, where the capability set information of the ONU includes: mapping of other port identifiers Port x of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or The message of the capability set information is a registration confirmation message.

With the solution provided by the embodiment, after the ONU first completes the registration authentication of the first port by using the first port identified by the first port identifier Port1, the first port is determined as the basic port, and the ONU completes the registration basic. The port reports the capability set information including the mapping relationship between the other port identifiers and other virtual MAC addresses, so that the OLT receives the location under the ONU through the basic port. There is a mapping relationship between the port and the virtual MAC address, where the OLT is the LLID1 allocated for the first port that completes the registration authentication for the first time, and the LLID1 can be used to uniquely identify the ONU. At this time, the OLT establishes at least: an ONU unique identifier (where the LLID1 can be used to uniquely identify the ONU), and a port identifier of each port of the ONU identified by the LLID1 and a correspondence table of virtual MAC addresses, by which the OLT can know The information about all ports under the ONU, the OLT can know which ports belong to the same ONU through the table, and solve the problem of port management of the OLT to multiple port ONUs in the next-generation PON system, which greatly simplifies the management process of the ONU. Improve the reliability of the system.

In a possible design, in order to enable the OLT to more fully manage the multi-port ONU, the capability set information may further include at least one of: a number of ports of the ONU, a port type of the ONU, and a Information on whether other ports are available.

After the OLT records the above information, the OLT can know whether the ONU supports multiple ports; if the ONU supports multiple ports, how many ports can be supported.

Further, the capability set information reported by the ONU to the OLT may further include: a Bit Map bit bitmap of the enabled port.

The OLT passes the entries of the foregoing table, so that the OLT further determines whether the ONU is allowed to have a multi-port capability, and which ports of the multi-ports supported by the ONU can be used. The OLT establishes and maintains the table, and the OLT can pass the table. More comprehensive management of ONUs.

In one possible design, the method further includes:

The ONU sends another registration request message, where the other registration request message includes: the other port identifier Portx of the ONU and the other vMAC address vMACx address of the ONU; the ONU receives the OLT to send the other port assignment Logical link identifier LLIDx; said x Is an integer greater than 1.

With the solution provided by the embodiment, the ONU sends the mapping between the other port identifiers and other vMAC address information to the OLT, so that the OLT registers the other ports of the ONU through the registration authentication of the other ports of the ONU. And further recording the LLID information corresponding to the other port by the other port, and the OLT further records the information into the table, thereby further improving the information of the table, and the OLT can learn, by using the table, which ports belong to the same ONU, and can also pass the The information recorded in the table further identifies which ports the data stream comes from, and improves the management and configuration of the multi-port ONU, thereby improving the reliability and stability of the system.

Further, in a possible design, the method further comprises: the ONU receiving a query message for requesting the capability set information. The ONU is the capability set information of the ONU after receiving the query message that the ONU requests the ONU to report the capability set information of the ONU, and then the ONU receives the message and reports the capability set information of the ONU. Alternatively, the ONU actively reports its capability set as described above. information. Further, in the process of the ONU actively reporting its capability set information, the ONU may send the capability set information of the ONU in the registration confirmation message to the OLT by responding to the registration confirmation message of the OLT.

On the other hand, an embodiment of the present application provides a data communication method, which is applied to a passive optical network system, where the method includes:

The optical line terminal OLT receives the registration request message, where the registration request message includes: the first port identifier Port1 of the ONU and the first virtual medium intervention control vMAC1 address of the ONU;

The OLT sends a first logical link identifier LLID1 to the first port of the ONU in response to the registration request message;

The OLT receives a message including capability set information, where the capability set information of the ONU includes: The other port of the ONU identifies a mapping of Port x and other vMACx addresses of the ONU, the x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The OLT generates a table, where the table includes: LLID1, a mapping relationship between Port1 of the ONU and a vMAC1 address of the ONU, and mappings of other Portx and other vMACx addresses of the ONU.

Through the table, the OLT can obtain information about all ports under the ONU, and the OLT can know which ports belong to the same ONU through the table, and solve the problem of port management of the OLT to multiple port ONUs in the next-generation PON system, greatly It simplifies the process of managing the ONU and improves the reliability of the system.

The OLT passes the entries of the foregoing table, so that the OLT further determines whether the ONU is allowed to have a multi-port capability, and which ports of the multi-ports supported by the ONU can be used, and the OLT establishes and maintains the table, and the OLT can The table is more comprehensive to manage the ONU.

In one possible design, the method further includes:

The OLT receives another registration request message, where the other registration request message includes: another port identifier Port x of the ONU and another vMAC address vMACx address of the ONU;

The OLT sends a logical link identifier LLIDx assigned to other ports; the x is an integer greater than one.

Further, in one possible design, the method further includes:

The OLT sends a query message for requesting the capability set information to the ONU. It is also possible that the ONU actively reports its capability set information as described above.

In one aspect, an embodiment of the present application provides an optical network unit ONU, where the ONU includes:

a first sender, configured to send a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and a message including capability set information is sent, The capability set information of the ONU includes: mapping of other port identifiers Port x of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The first receiver is configured to receive the first logical link identifier LLID1.

With the solution provided by the embodiment, after the first port identified by the first port identifier Port1 is used to complete the registration authentication of the first port, the first port is determined as a basic port, and the ONU passes the registered basic port. The capability set information including the mapping relationship between the other port identifiers and the other virtual MAC addresses is reported, so that the OLT receives the mapping relationship between all the ports and the virtual MAC address of the ONU through the basic port, where the OLT is configured to complete the registration authentication. The first port is assigned LLID1, which can be used to uniquely identify the ONU. At this time, the OLT establishes at least: an ONU unique identifier (where the LLID1 can be used to uniquely identify the ONU), and a port identifier of each port of the ONU identified by the LLID1 and a correspondence table of virtual MAC addresses, by which the OLT can know Information about all ports under the ONU, the OLT can know which ports belong to the same ONU through the table, and solve the OLT to multiple port ONUs in the next generation PON system. The problem of port management greatly simplifies the management process of the ONU and improves the reliability of the system.

In a possible design, in order to enable the OLT to more fully manage the multi-port ONU, the capability set information may further include at least one of: information indicating whether the other port is available, the number of ports of the ONU, and The port type of the ONU.

In a possible design, the first transmitter of the ONU is further configured to send another registration request message, where the other registration request message includes: another port identifier of the ONU, Port x, and other vMAC addresses of the ONU. a vMACx address; the ONU receives a logical link identifier LLIDx sent by the OLT for other ports; the x is an integer greater than 1. With the solution provided by the embodiment, the ONU sends the mapping between the other port identifiers and other vMAC address information to the OLT, so that the OLT registers the other ports of the ONU through the registration authentication of the other ports of the ONU. And further recording the LLID information corresponding to the other port by the other port, and the OLT further records the information into the table, thereby further improving the information of the table, and the OLT can learn, by using the table, which ports belong to the same ONU, and can also pass the The information recorded in the table further identifies which ports the data stream comes from, and improves the management and configuration of the multi-port ONU, thereby improving the reliability and stability of the system.

Further, in a possible design, the first receiver of the ONU is further configured to receive, by the ONU, a query message for requesting the capability set information. The ONU is the capability set information of the ONU after receiving the query message that the ONU requests the ONU to report the capability set information of the ONU, and then the ONU receives the message and reports the capability set information of the ONU. Alternatively, the ONU actively reports its capability set as described above. information. Further, in the process of the ONU actively reporting its capability set information, the ONU may send the capability set information of the ONU in the registration confirmation message to the OLT by responding to the registration confirmation message of the OLT.

On the other hand, an embodiment of the present application provides an optical line terminal OLT, where the OLT includes:

a second receiver, configured to receive a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and receiving a message including capability set information, The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The processor is configured to: in response to the registration request message, assign a first logical link identifier LLID1 to the first port of the ONU; generate a table, where the table entry includes at least: LLID1, Port1 of the ONU A mapping relationship between the mapping relationship with the vMAC1 address of the ONU and other Portx of the ONU and other vMACx addresses.

In a possible design, in order to enable the OLT to more fully manage multi-port ONUs, the energy The force set information may also include at least one of: a number of ports of the ONU, a port type of the ONU, and information indicating whether the other ports are available.

In a possible design, the second receiver is configured to receive another registration request message, where the other registration request message includes: another port identifier of the ONU, Portx, and other vMAC address vMACx addresses of the ONU;

Further, in a possible design, the second transmitter further sends an inquiry message for requesting the capability set information to the ONU. It is also possible that the ONU actively reports its capability set information as described above.

On the other hand, an embodiment of the present application provides a passive optical network system PON, where the system includes: an optical line terminal OLT and an optical network unit ONU, where the OLT is connected to the ONU through an optical distribution network, such as the ONU The ONUs described in the above embodiments and/or include the OLT described above.

On the other hand, an embodiment of the present application further provides a data communication device, where the data communication device package include:

a first sending unit, configured to send a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and sending a message including capability set information, The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The first receiving unit is configured to receive the first logical link identifier LLID1.

With the solution provided by the embodiment, after the first port identified by the first port identifier Port1 is used to complete the registration authentication of the first port, the first port is determined as a basic port, and the ONU passes the registered basic port. The capability set information including the mapping relationship between the other port identifiers and the other virtual MAC addresses is reported, so that the OLT receives the mapping relationship between all the ports and the virtual MAC address of the ONU through the basic port, where the OLT is configured to complete the registration authentication. The first port is assigned LLID1, which can be used to uniquely identify the ONU. At this time, the OLT establishes at least: an ONU unique identifier (where the LLID1 can be used to uniquely identify the ONU), and a port identifier of each port of the ONU identified by the LLID1 and a correspondence table of virtual MAC addresses, by which the OLT can know The information about all ports under the ONU, the OLT can know which ports belong to the same ONU through the table, and solve the problem of port management of the OLT to multiple port ONUs in the next-generation PON system, which greatly simplifies the management process of the ONU. Improve the reliability of the system.

After the above information is recorded by the OLT, the OLT can know whether the ONU supports multiple ports; The ONU supports multiple ports and how many ports can be supported.

In a possible design, a data communication device, the data communication device comprising:

a second receiving unit, configured to receive a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and receiving a message including capability set information, The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The processing unit is configured to: in response to the registration request message, assign a first logical link identifier LLID1 to the first port of the ONU; generate a table, where the table includes: LLID1, Port1 of the ONU, and the ONU The mapping relationship between the vMAC1 address and the other Portx of the ONU and other vMACx addresses.

With the solution provided by the embodiment, after the ONU completes the registration authentication of the first port by using the first port identified by the first port identifier Port1, the first port is determined as the basic port, and the ONU reports the basic port through registration. The capability set information including the mapping relationship between the port identifier and the other virtual MAC address, so that the OLT receives the mapping relationship between all ports and the virtual MAC address of the ONU through the basic port, where the OLT is configured to complete the registration authentication. The first port is assigned LLID1, and the LLID1 can be used to uniquely identify the ONU. At this point the OLT is established at least Including: the ONU unique identifier (where the LLID1 can be used to uniquely identify the ONU), and the port identifier of each port of the ONU identified by the LLID1 and the correspondence table of the virtual MAC address. Through the table, the OLT can learn all the ports under the ONU. Related information, the OLT can know which ports belong to the same ONU through the table, and solve the problem of port management of the OLT to multiple port ONUs in the next-generation PON system, which greatly simplifies the management process of the ONU and improves the reliability of the system. Sex.

In one possible design, the capability set information further includes at least one of: information indicating whether the other port is available, a number of ports of the ONU, and a port type of the ONU.

Further, in a possible design, the second receiving unit is further configured to receive and receive another registration request message, where the other registration request message includes: another port identifier of the ONU, Portx, and other vMACs of the ONU. Address vMACx address;

The second sending unit is further configured to send a logical link identifier LLIDx allocated to other ports of the ONU; the x is an integer greater than 1.

With the solution provided by the embodiment, the optical network unit ONU sends a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; Receiving a first logical link identifier LLID1; the ONU transmitting a message including capability set information, where the capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, The message that x is an integer greater than 1 or the capability set information is a registration confirmation message. Through the table, the OLT can obtain information about all ports under the ONU, and the OLT can know which ports belong to the same ONU through the table, and solve the problem of port management of the OLT to multiple port ONUs in the next-generation PON system, greatly It simplifies the process of managing the ONU and improves the reliability of the system.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments and the prior art description will be briefly described below. Obviously, the drawings in the following description are only some implementations of the present invention. For example, other drawings may be obtained from those of ordinary skill in the art based on these drawings without any inventive labor.

1 is a schematic diagram of a network architecture of a PON system provided by the prior art;

2 is a schematic diagram of a network architecture of a next-generation EPON system according to an embodiment of the present invention;

FIG. 3 is a data communication method according to an embodiment of the present invention;

4 is a port attribute table of an ONU according to an embodiment of the present invention;

FIG. 5 is another data communication method according to an embodiment of the present invention;

FIG. 6 is another data communication method according to an embodiment of the present invention;

FIG. 7 is an extended OAM message format provided by an embodiment of the present invention;

FIG. 8 is a field description of an extended OAM message format according to an embodiment of the present invention;

FIG. 9 is an extended Opcode format according to an embodiment of the present invention;

FIG. 10 is another OAM message format according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of an ONT according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of another OLT according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of another data communication apparatus according to an embodiment of the present invention.

detailed description

Embodiments of the present invention provide a data communication method and related device and system, which are used to solve the port management problem of an OLT to a multi-port ONU in a next-generation EPON system, and implement an OLT-to-multi-port ONU in a next-generation EPON system. Port management, which in turn implements OLT to ONU Further configuration and management greatly improve the reliability of the system.

In order to make the object, the features and the advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

2 is a schematic diagram of a network architecture of a next-generation EPON system. As shown in FIG. 2, the next-generation EPON system 100 includes an OLT 110, a plurality of ONUs 120, and an Optical Distribution Network (ODN) 130.

The following describes the network structure of Figure 2 below. The OLT 110 includes a message distributor and respective downlink ports. The illustration is given by the message distributor as a demultiplexer DeMultiplexing, which is given as four downlink ports in the example of the downlink port diagram, here given as an example, at least two downlink ports are provided. An electrical signal is generated between the DeMultiplexing and the port, and the DeMultiplexing and the downlink port are both disposed on a board of the OLT, and each of the downlink ports can convert an electrical signal into an optical signal and output through the port. The four downlink ports of the OLT and the multiplexer WDM are connected by a branch fiber, and optical signals are transmitted in each branch fiber. The wavelengths of the optical signals transmitted in the branched fibers may be the same or different. It should be noted that if the WDM is set in the OLT, the downlink ports of the OLT and the WDM are connected by a waveguide. The WDM and the beam splitter 130 are connected by a trunk fiber, and the beam splitter 130 is connected to the WDM of the terminal side through a branch fiber. The WDM is connected to the message reassembler through the uplink ports of the terminal-side device ONU, and the message reassembler is a multiplexer or a multiplexer in the example of FIG. 2, including but not limited to the multiplexer or the multiplexer. Waves. The WDM on the terminal side and each uplink port on the ONU 120 Optical signals are transmitted between the respective branch fibers. When the WDM of the terminal is set on the ONU 120, the WDM and the ONU 120 are connected by a waveguide for transmitting an optical signal. Each of the uplink ports on the ONU 120 converts the optical signal into an electrical signal, and transmits the signal to Multiplxing to perform packet reassembly. An electrical signal is transmitted between the respective uplink ports and the Multiplxing. Finally, the ONU sends the reassembled service flow to the user through each downlink port (not shown in FIG. 2).

The network structure diagram of FIG. 2 is described in the following manner: the OLT receives a service flow from the network side, and distributes the service flow through at least two channels through each downlink port, and FIG. 2 gives For example, four channels are respectively transmitted for λ0-λ4, wherein the one service stream is split into data packets of variable lengths and transmitted through respective channels. The WDM aggregates the data packets of the respective channels, and transmits them to the WDM of each terminal side through the optical splitter 130, and demultiplexes them to the respective channels λ0-λ4 of the respective ONUs 120 by the WDM on the terminal side, and performs datagrams through the respective channels. The transmission of the text finally reorganizes the message through Multiplexing, and sends the reassembled data packet, that is, the service flow, to the user.

The above channel can be understood as a wavelength channel, or it can be another channel. The channel can be a logical channel or a physical layer fiber link. In the above network architecture diagram, the channel can be understood as a logical or physical link from each downlink port of the OLT to each uplink port of the ONU.

In addition, the network architecture of the above-mentioned next-generation EPON is an example of a 100GEPON architecture, that is, data transmission is performed between the OLT and the ONU through four channels, each channel carrying 25 Gbps data packets, and a total of 100 Gbps data packets can be transmitted. It should be noted that if the OLT and the ONU transmit data through two channels, each channel carries 25 Gbps data packets, and a total of 50 Gbps data packets can be transmitted. The architecture of the above example can also be a 50 G EPON architecture. Here No restrictions.

The data packet transmitted between the OLT and the ONU may be Ethernet data or a forward error correction code code word FEC codeword, and the Ethernet data is encapsulated and transmitted in the payload data block of the FEC codeword.

The above description is based on the system architecture of 100G EPON. The above system is not limited to 100G EPON, 50G EPON and TWDM-PON (WDM/TDM hybrid passive optical network), or GPON can be applied.

Based on the network architecture provided in FIG. 2 above, a data communication method is provided, as shown in FIG. Applied to the above passive optical network system, the method includes:

S300. The optical network unit ONU sends a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU.

Here, the ONU registration and certification process is prior art, and follows the GPON, EPON, XGPON or XGEPON, or even 50G EPON, 100G EPON standard regulations or the existing registration certification process, which will not be described here.

Based on the network architecture described above, the ONU has multiple ports, wherein the port may be a physical port or a logical port. For example, the port on which the upstream and downstream wavelengths of the ONU are located, or the port on which the electrical layer of the physical layer is sent and received, or the port on which the optical module with a single wavelength pair is located is called a port. It is a port corresponding to a 25Gbps logical channel.

The address information of the port is identified by using a MAC address, where the MAC address includes a virtual MAC address vMAC address, where the vMAC address may be The MAC address can also be a logical MAC address.

After the ONU completes the registration authentication of the first port by using the first port identified by the first port identifier Port1, the first port is determined to be a basic port. It should be noted that the ONU has multiple ports, and the port that can be registered for the first time through the port is the basic port, or the ONU can specify any one of the multiple ports, and the port is registered. After the authentication process, set to the basic port. The OLT will use this basic port to collect information about other ports under the ONU.

In addition, various messages involved in the following processes, such as a registration request message, a registration response message, and a query message, may be (Multi-Point Control Protocol, MPCP) messages or operations, management, and maintenance messages (operations). , administration and maintenance (OAM) messages, or physical layer OAM (PLOAM) messages can also be run for the physical layer.

Here, the "vMAC" address is represented by "vMAC" for the sake of simplicity, and the entire application file is applicable.

S302. The optical line terminal OLT receives the registration request message, where the registration request message includes: a first port identifier (Port ID) Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU.

S304. The OLT sends a first logical link identifier LLID1 to the first port of the ONU in response to the registration request message.

S306. The ONU receives the first logical link identifier LLID1, and returns a registration confirmation message to the OLT.

S308. The OLT receives a response message of the ONU.

Optionally, the OLT locally establishes the first port identifier Port1, the vMAC1 address, and the LLID1. The corresponding relationship between the OLTs can save the corresponding relationship locally.

Here, the OLT registers the first port after the authentication is passed as the basic port, and the LLID1 is used to uniquely identify the ONU, so that the ONU can report the capability set information of other ports of the ONU through the basic port, for example, other port identifiers and other virtual MAC addresses. The ability to map information about the relationship set.

S310, the ONU sends a message including the capability set information to the OLT, where the capability set information of the ONU includes: mapping of other port identifiers of the ONU, Portx, and other vMACx addresses of the ONU, where the x is greater than An integer of 1.

Further, the message of the capability set information may be a registration confirmation message, that is, the ONU actively reports the capability set information to the OLT by using the registration confirmation message; or the OLT may send the query message to the ONU, After requesting the ONU to send the capability set information, the ONU receives the query message and sends the capability set information to the OLT.

Specifically, the ONU reports the capability set information to the OLT through the basic port, that is, the first port.

Optionally, the foregoing capability message may further include at least one of the following: a number of ports of the ONU, a port type of the ONU, and information indicating whether the other port is available. Further optionally, the capability information may further include: unique identification information of the ONU.

S312. The OLT generates a table according to the capability information of the ONU, where the table includes: an ONU unique identifier LLID1, a mapping relationship between the port 1 of the ONU and a vMAC1 address of the ONU, and other Portx sums of the ONU. Mapping of other vMACx addresses.

Further, the table further includes: a correspondence between Port1 and LLID1.

Further, the table further includes: an OLT to enable port mapping of Port1, that is, the OLT sets the port usage status of the Port1.

The above table generated by the OLT is Table 1. Table 1 is the port attribute table of the ONU maintained by the OLT. The OLT specifies LLID1 to uniquely identify the ONU. Of course, the OLT can also specify other LLIDx or vMAC1 or other vMACx to uniquely identify the ONU.

Optionally, the method may further include:

S314. The ONU initiates a registration authentication request to the OLT through the other ports of the ONU, and requests the OLT to perform registration authentication on other ports of the ONU.

The registration authentication request includes a port number and a vMAC address that the ONU needs to authenticate.

S316: The OLT completes the authentication of other ports of the ONU in sequence, and sequentially assigns LLIDs to other ports of the ONU.

S318. The ONU sequentially sends a registration response to the OLT.

At this time, each port of the ONU is registered and authenticated, and each port can perform data communication normally.

The OLT further refines the table 1 according to the above-mentioned LLIDx allocated for other ports of the ONU, so as to subsequently configure, maintain and manage the port of the ONU.

Specifically, the OLT adds the mapping of Portx and the allocated LLIDx to the generated table.

Further, the OLT can further configure the multi-port enable bit mapping, port number, port type, etc. according to other port information of the ONU, for example, to make the table clearer, more complete, and more convenient. The OLT manages the ports of each ONU.

Further, the OLT may also start a timer, and after each timer is registered, the registration confirmation or registration response message is fed back to the OLT before the timer expires. If a port of the ONU does not feed back the registration confirmation or registration response message to the OLT after the timer expires, the port registration failure is considered. The OLT can re-execute the above method flow by registering the port that the ONU fails to register, or the OLT can re-register the ONU, including all ports of the ONU. Register for certification.

The following describes the ONU port attribute table maintained by the OLT.

Referring to FIG. 4, FIG. 4 is a table of all the entries of Table 1. The mapping between the unique identifier of the ONU, the port identifier of the ONU, and the vMACx address of the ONU, and the LLID of the ONU are the main entries of the port information for the OLT to identify the multi-port ONU. . Optionally, the port type of the ONU, the number of ports of the ONU, the supported LLID of the ONU, and the ONU multi-port enable bit mapping are optional.

The following table entries in Table 1 are described below:

ONU unique identifier: used to uniquely identify the ONU.

ONU port type: Used to indicate whether the ONU supports multiple ports or single ports.

Number of ports on the ONU: Used to indicate the number of ports supported by the ONU. If the ONU is a single-port type in the ONU port type, the number of the ONU ports is 1. If the port type of the ONU is multi-port, the number of ports of the ONU indicates the number of ports supported by the ONU. For example, 2 indicates that the ONU has Two ports, if the rate of each port of the ONU is 25Gbps, the ONU can transmit 50G data stream.

Each port vMAC address is used to indicate the MAC address information of each port supported by the ONU. The MAC address here may be a logical MAC address or a physical MAC address. The vMAC addresses corresponding to the ports of the ONU may be the same or different. Generally, the vMAC address corresponding to each port of the ONU is different, and can be used to identify the address of the port.

Port corresponding LLID: used to indicate the LLID assigned by each port of the ONU.

ONU LLID: The OLT can assign an LLID to the ONU to identify the ONU. It can also assign multiple LLIDs to the ONU. Different ports correspond to different LLIDs. The ONU LLID is used to indicate whether the multi-LLID supported by the ONU or the single LLID is supported. If the ONU supports multiple LLIDs, the OLT Each port of the ONU is assigned a different LLID, and one of the LLIDs can be specified to uniquely identify the ONU. If the ONU supports a single LLID, the OLT allocates an LLID to the multi-port of the ONU, and the LLID is used to uniquely identify the ONU, but each port of the ONU may also be assigned a different LLID.

ONU multi-port enable bit mapping: The multi-port enable flag is used to identify the multi-port enable status of the ONU. That is, if the multi-port enable flag value is 1, the corresponding port can be used. A value of 0 indicates that the corresponding port is forbidden to use.

For example: 3 ONUs are connected to one OLT: ONU1, ONU2, ONU3, and ONU4. Taking ONU2 as an example, the above data communication method is as follows:

S500, the ONU2 sends a registration request to the OLT through the port port1, where the registration request message includes: the first port identifier ID1: port1 of the ONU and the first virtual media intervention control vMAC1 address of the ONU: vMAC1.

S502. The OLT receives a registration request message, where the registration request message includes: Port1 and vMAC1.

S504. The OLT sends a logical link identifier LLID2 to the port Port1 of the ONU2 in response to the registration request message.

S506. The ONU2 receives the logical link identifier LLID2 and returns a registration confirmation message to the OLT.

It should be noted that the ONU2 firstly registers the first port Port1 of the ONU2. Therefore, Port1 is the basic port of the ONU2.

Further, the OLT may allocate different and globally unique LLIDs for different ports of the same ONU; or assign the same LLID to different ports of the same ONU, and the ONU internally distinguishes them by other means, for example, in Table 1, ONU2 Supporting a single LLID, the OLT assigns an LLID2 to the ONU. The LLID2 is used to uniquely identify the ONU2, and the ONU2 still assigns an LLID to each port. Used to distinguish the data flow of each port. For example, after the registration authentication is completed, the OLT allocates LLID2 to the port1. After the port 2 of the ONU completes the registration authentication, the OLT allocates LLID3 to the port 2. If the ONU2 supports multiple LLIDs, the OLT allocates multiple LLIDs for multiple ports of the ONU, and specifies one LLID to uniquely identify the ONU. Generally, the port that passes the first-time registration authentication is the basic port, and the LLID assigned to the basic port is used to uniquely identify the LLID of the ONU. For example, the ONU3 supports multiple LLIDs. The OLT allocates four LLIDs to the ONU. The port that the ONU first authenticates is Port1. The OLT assigns LLID4 to Port1. The LLID4 is used to uniquely identify the ONU3. The remaining LLIDs are used for other ports of the ONU. Configuration.

When the LLID2 of the ONU2 is used to uniquely identify the ONU2, the port1 of the ONU2 is registered and authenticated. The OLT can record the port attribute entry of the ONU2: Port 1, vMAC1, and LLID2. Further, the OLT can also perform an enable bit mapping on the already registered Port1, and configure Port1 to be in an enabled state, that is, data can be sent through the port.

Of course, the OLT can record the related entries of the port attribute table of Port1 of the ONU2, and can save the entries of the table locally or upload to other servers, or save the entries.

It should be noted that the OLT can specify the port 1 of the multi-port of the ONU 2 that is the first to complete the registration authentication as the basic port, and complete the collection of the capability set information of the other ports of the subsequent ONU 2 through the basic port; If a port is registered for authentication, the port that is registered for authentication is the basic port. The ONU can report the capability set information of other ports on the ONU through the basic port. For example, the mapping between other port IDs and other virtual MAC addresses. The ability to set information and so on.

S508, the ONU2 sends a message including the capability set information to the OLT through the basic port Port1, where the capability set information of the ONU includes: other port identifiers of the ONU, Portx, and the Mapping of other vMACx addresses of the ONU, the x being an integer greater than one.

Optionally, the capability set information sent by the ONU in step S508 may also be sent to the OLT in the registration confirmation message of S506. The OLT may send an inquiry message to the ONU2, and request the ONU2 to send the capability set information, ONU2. Receiving the query message, sending capability set information to the OLT.

The OLT generates Table 1 based on the capability set information of the ONU 2. The capability set information reported by the ONU2 may include: the second port identifier Port2 of the ONU2 and the corresponding MAC address vMAC2, and the OLT records port attribute information of Port1 and Port2 of the ONU2. For example, the ONU2 has two ports, and supports multiple ports, Port1. Correspondence between vMAC1 and LLID2 ONU2 supports a single LLID. LLID1 is a global identifier assigned by the OLT to the ONU2. It is used to uniquely identify the ONU2, and the OLT configuration port1 and port2 are both enabled and can be used to send and receive data streams.

S510. The ONU2 sends a registration request message to the OLT through the port2, where the registration request message includes: Port2 and vMAC2.

S512. The OLT receives the registration request message of the ONU2, allocates the LLID2 to the Port2 of the ONU2, and sends it to the ONU2.

S514. The ONU2 receives the LLID2 allocated by the OLT and responds to the OLT.

The OLT receives the response message of the ONU2, further improves the information of Table 1 according to the information such as Port2, vMAC2, and LLID3 of the ONU2, and further knows the information of each port of the ONU through the table. For example, the OLT further records the correspondence between Port2, vMAC2, and LLID3. , ONU port type, port number, ONU multi-port enable bit mapping and other information.

According to the generated table, the OLT can know the port information of the multi-port ONU connected by the OLT, and then receive the data stream sent from the ONU2, and the number stream is identified by LLID2, and the OLT is based on The correspondence between LLID2 and Port1 in Table 1 indicates that the data stream is from the Port1 port of ONU2 and the MAC address corresponding to the port is vMAC1.

When the basic port of the above ONU is faulty, the other ports cannot be registered. In order to solve this problem, the present invention also provides a data communication method. Of course, the data communication method is not only applicable to the failure of the basic port of the ONU, but also the port of the ONU is a normal port, and the basic port is not required to be specified.

The difference from the above embodiment is that the OLT no longer specifies a basic port, and multiple ports of the ONU have equal status, and each port can be registered autonomously, that is, in order for the OLT to distinguish which ports belong to the same ONU, each port The report information includes the port number of all the ports on the ONU to identify the mapping between the port and the vMAC address information, and the physical MAC address used to uniquely identify the ONU. The OLT authenticates each port of the ONU according to the information reported by the ONU, and generates The structure of Table 1 in FIG. 4 is uniquely different from Table 1 in that the ONU is uniquely identified as the physical address of the ONU or the specified vMAC address for uniquely identifying the ONU, rather than the LLID of the ONU. The table in which the ONU uniquely identifies the entry in Table 1 is replaced with the physical address of the ONU or the vMAC of the ONU can be used to describe the table generated by the OLT of this embodiment.

It should be extended that, regardless of the above embodiment or the present embodiment, the unique identifier of the ONU can be extended to the information that uniquely identifies the ONU, such as the sequence number (SN) of the ONU.

It should be noted here that the physical MAC address of the ONU may also include the virtual MAC address of the ONU, or may be different from the vMAC address. If the physical MAC address of the ONU includes the virtual MAC address of the ONU, the entry uniquely identified by the ONU in Table 1 of the OLT needs to specify any vMAC to uniquely identify the ONU; if the physical MAC address of the ONU and the vMAC of the ONU Differently, the ONU unique identifier is identified by the physical MAC address of the ONU.

Referring to FIG. 6, an embodiment of the present invention further provides another method for data communication. As shown in FIG. 6, the method is also applied to the foregoing PON system, where the method includes:

S600: The ONU sends a first registration request message to the OLT, where the first registration request includes: a physical MAC address of the ONU, a first mapping relationship, and other mapping relationships.

The first mapping relationship includes: the first port identifier Port1 of the ONU and the first virtual MAC address vMAC1 of the ONU; the other mapping relationship includes: other port identifiers of the ONU and other virtual MAC addresses vMACx of the ONU , the x is an integer greater than one.

Specifically, the ONU sends a mapping of Port 1 and vMAC1 and a mapping of Portx and vMACx through the first port.

S602. The OLT receives the first registration request sent by the ONU, allocates LLID1 to the ONU, and sends the LLID1 to the ONU.

S604. The ONU receives the LLID1 allocated by the OLT, and returns a registration response to the OLT.

S606. The OLT generates a table according to the registration request of the ONU, where the table includes: the ONU uniquely identifies the MAC1, the mapping relationship between the Port1 of the ONU and the vMAC1 address of the ONU, and other Portx and other vMACx of the ONU. The mapping relationship of addresses.

Further, the table further includes: a correspondence between Port1 and LLID1.

Further, the table further includes: an OLT pair port mapping map of the port 1, that is, an OLT pair The Port1 port usage status is set.

S608. The ONU repeatedly performs 2 ⁿ -1 steps S600-S604 until all ports under the ONU complete registration, where n is an integer from 2 to 10.

Specifically, there are several ports under the ONU, and the steps of S600-S604 are repeated several times until all the ports have been registered at the OLT. The OLT further refines the table 1 according to the above-mentioned LLIDx allocated for other ports of the ONU, so as to subsequently configure, maintain and manage the port of the ONU.

Further, the OLT may also start a timer, and after each timer is registered, the registration confirmation or registration response message is fed back to the OLT before the timer expires. If a port of the ONU does not feed back the registration confirmation or registration response message to the OLT after the timer expires, the port registration failure is considered. The OLT can re-execute the above method flow by registering the port on which the ONU fails to register, or the OLT can cause the ONU to re-register, and all ports of the ONU are re-registered and authenticated.

Specifically, the table generated by the OLT in this embodiment is an ONU port attribute table, and the difference between the information of the table and the table 1 has been described above, and the same points and differences have been described, and details are not described herein again.

The OLT of the foregoing embodiment of the present invention does not need to specify a basic port for the ONU, and is therefore applicable to various ONUs. When the ONU registers the report, the related attribute information of the port that is reported and reported is reported and reported. The attribute information of the port of the ONU except the port. Through the table, the OLT can obtain information about all ports under the ONU. The OLT can know which ports belong to the same ONU through the table, and solve the OLT in the next generation PON system. The problem of port management for multiple port ONUs greatly simplifies the management process of the ONU and improves the reliability of the system.

The various message formats mentioned in all the foregoing embodiments may be specifically as follows: may be implemented by extending an OAM message, and the specific OAM message format is as described in the fields of the OAM message in FIG. 7 and FIG. 8.

The format of the OAM message is based on the format of the existing OAM message. The DA, SA, and length are all in the format of the existing OAM message. The description of the field, here focuses on the new Code field and Data field.

The specific definition is as follows:

Code: The value of this field is 0xFE, indicating that the OAMPDU is an Organization Specific OAMPDU.

Data: Contains an OUI, extended opcode (Ext.Opcode) and Payload. The specific values are as follows:

The organization uniqueness identifier OUI: 3 bytes, which is the organization uniqueness identifier OUI. The value should be configurable, and China Telecom's OUI is tentatively set to 0x111111;

Extended opcode (Ext.Opcode): used to indicate the type of operation of the extension, the specific values are shown in the following table;

Payload: Represents the content of a specific data payload.

The above-mentioned extended Opcode definition is specifically shown in Table 3 of FIG. 9, and various types of definitions have been described in detail in Table 3, and are not described in detail herein.

Specifically, for example, the message format of the capability set information reported by the ONU in the OAM packet is as shown in Table 4 of FIG.

Based on the above embodiments of the communication method, the embodiment of the present invention further provides an embodiment of various components for performing the foregoing communication method, specifically:

As shown in FIG. 11, FIG. 11 is an optical network unit ONU, where the ONU includes:

The first transmitter 1100 is configured to send a registration request message, where the registration request message includes: a first port identifier Por1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and a message including capability set information is sent. The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The first receiver 1102 is configured to receive the first logical link identifier LLID1.

Further, the capability set information further includes at least one of: information indicating whether the other port is available, a number of ports of the ONU, and a port type of the ONU.

For the processing of the ONU, reference may be made to the processing of the embodiment of the present invention, and the processing of the corresponding method is not performed in the foregoing embodiment. The description of the method embodiment relates to the sending side or receiving of the ONU. The actions of the side can be performed by the transmitter of the ONU and the receiver of the ONU. Even the processing functions other than the sending or receiving functions of the ONU can be completed by the processor of the ONU, for example, the MAC chip of the ONU. For details, please refer to the detailed description of the foregoing method embodiments, and details are not described herein again.

The location of the above ONU in the system can be referred to the system architecture diagram of FIG. 2.

An embodiment of the present invention further provides an optical line terminal OLT. As shown in FIG. 12, the OLT includes:

The second receiver 1200 is configured to receive a registration request message, where the registration request message includes: the first port identifier Port1 of the ONU and the first virtual media intervention control vMAC1 address of the ONU; and the message that includes the capability set information is received. The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The processor 1202 is configured to: in response to the registration request message, assign a first logical link identifier LLID1 to the first port of the ONU; generate a table, where the table entry includes at least: LLID1, the ONU The mapping relationship between ID1 and the vMAC1 address of the ONU and other IDXs of the ONU and other vMACx addresses.

Further, the second receiver 1200 is configured to receive another registration request message, where the other registration request message includes: mapping of another port identifier Portx of the ONU and other vMAC address vMACx addresses of the ONU;

The OLT further includes a second transmitter 1204 for transmitting a logical link identifier LLIDx allocated to other ports of the ONU; the x is an integer greater than one.

The processing flow of the OLT may be referred to the processing of the embodiment of the present invention. The OLT is not divided into specific hardware. The description of the method embodiment relates to the sending or receiving of the OLT. The actions of the side can be performed by the transmitter of the OLT and the receiver of the OLT. Even the processing functions other than the sending or receiving functions of the OLT can be completed by the processor of the OLT, such as the MAC chip of the OLT. For details, please refer to the detailed description of the foregoing method embodiments, and details are not described herein again.

The location of the above OLT in the system can refer to the system architecture diagram of FIG. 2.

The embodiment of the present invention further provides a passive optical network system PON. As shown in FIG. 2, the system includes: an optical line terminal OLT and an optical network unit ONU, where the OLT is connected to the ONU through an optical distribution network. For details about the specific structure of the ONU and the functions performed by the respective modules, refer to FIG. 11 and the ONUs described in the corresponding embodiments. For the OLT, refer to the OLT as described in FIG. 12 and the corresponding embodiments.

An embodiment of the present invention further provides a data communication device, where the data communication device includes:

a first sending unit, configured to send a registration request message, where the registration request message includes: The first port of the ONU identifies Port1 and the first virtual medium of the ONU to intervene to control the vMAC1 address; and sends a message including the capability set information, where the capability set information of the ONU includes: the other port identifier IDx of the ONU and the ONU Mapping of other vMACx addresses, the x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The capability set information further includes at least one of: information indicating whether the other port is available, a number of ports of the ONU, and a port type of the ONU.

The data communication device may be an ONU 120 or an Optical Network Terminal (ONT) in the system FIG. 2 or other terminal-side devices.

The processing flow of the foregoing data communication device may refer to the processes in FIG. 2-6 and the corresponding method embodiments, where the specific hardware division of the data communication device is not performed in the foregoing embodiment, where the data communication is involved according to the description of the method embodiment. The actions of the transmitting side or the receiving side of the device can be performed by its transmitter and receiver, and even other processing functions other than the transmitting or receiving functions of the data communication device can pass through its processor, such as a MAC chip. For details, refer to the detailed description of the foregoing method embodiments, and details are not described herein again.

The data communication device can learn related information of all ports under the data communication device through the table, and the OLT can know which ports belong to the same ONU through the table, and solve the port management of the OLT to multiple port ONUs in the next generation PON system. The problem greatly simplifies the management process of the ONU and improves the reliability of the system.

a second receiving unit, configured to receive a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual media intervention control vMAC1 of the ONU Receiving a message including capability set information, the capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, the x being an integer greater than 1 or the capability The set query information is a registration confirmation message;

a processing unit, configured to: in response to the registration request message, assign a first logical link identifier LLID1 to the first port of the ONU; generate a table, where the table includes: LLID1, ID1 of the ONU, and the ONU The mapping relationship between the vMAC1 address and the other IDx of the ONU and other vMACx addresses.

Further, the second receiving unit is further configured to receive and receive another registration request message, where the other registration request message includes: another port identifier IDx of the ONU and another vMAC address vMACx address of the ONU.

The data communication device may be an OLT 110 or a central office device as in the system FIG.

For the structure of a specific data communication device, reference may be made to FIG. 12 and the description of the corresponding embodiments, and details are not described herein again.

The data communication device can obtain information about all ports under the ONU through the table, and the OLT can know which ports belong to the same ONU through the table, and solve the problem that the OLT manages ports of multiple port ONUs in the next-generation PON system. It greatly simplifies the management process of the ONU and improves the reliability of the system.

The embodiment of the invention further provides a data communication device, as shown in FIG. 13, the data communication The device includes a processor, a memory, and a bus system, the processor and the memory being coupled by the bus system, the memory for storing instructions, the processor for executing instructions stored by the memory,

The processor is configured to: according to the first port identifier Port1 of the ONU included in the received registration request message, and the first virtual medium of the ONU to control the vMAC1 address; and the capability set information of the ONU includes: The other port of the ONU identifies a mapping of Portx and other vMACx addresses of the ONU, the x is an integer greater than 1 or the capability set query information is a registration confirmation message and the first port is assigned to the ONU. The logical link identifier LLID1 generates a table, and the table includes: LLID1, a mapping relationship between Port1 of the ONU and a vMAC1 address of the ONU, and mappings between other Portxs of the ONU and other vMACx addresses.

The embodiment of the present invention further provides another ONU corresponding to FIG. 6 and the corresponding embodiment, where the ONU includes:

The sender is configured to send a first registration request message to the OLT, where the first registration request includes: a physical MAC address of the ONU, a first mapping relationship, and other mapping relationships.

The receiver is configured to receive the LLID1 allocated by the OLT, and return a registration response to the OLT.

Further, the ONU further includes a processor for repeatedly performing 2 ⁿ -1 steps S600-S604 until all ports under the ONU complete registration, where n is an integer from 2 to 10.

Specifically, there are several ports under the ONU, and the above-mentioned transmission and receiver functions are repeatedly executed until all ports have been registered at the OLT. The OLT further refines the table 1 according to the above-mentioned LLIDx allocated for other ports of the ONU, so as to subsequently configure, maintain and manage the port of the ONU.

An embodiment of the present invention further provides an OLT, where the OLT includes:

a receiver, configured to receive a first registration request sent by the ONU;

a processor, configured to allocate LLID1 to the ONU; the OLT generates a table according to the registration request of the ONU, where the table includes: the ONU uniquely identifies the MAC1, the Port1 of the ONU, and the ONU The mapping relationship between the vMAC1 address and the other Portx and other vMACx addresses of the ONU

a transmitter, configured to send the LLID1 to the ONU.

Further, the table further includes: a correspondence between Port1 and LLID1.

The processing flow of the foregoing OLT may refer to the processing of FIG. 2-6 and the corresponding method embodiment, The foregoing embodiment does not perform specific hardware partitioning on the OLT. Here, according to the description of the method embodiment, the actions of the sending side or the receiving side of the OLT may be performed by the transmitter of the OLT and the receiver of the OLT, and even The processing functions of the OLT, except for the sending or receiving functions, can be performed by the processor of the OLT, such as the MAC chip of the OLT. For details, refer to the detailed description of the foregoing method embodiments, and details are not described herein.

Based on the ONU and the OLT, the embodiment of the present invention further provides a passive optical network system PON. As shown in FIG. 2, the system includes: an optical line terminal OLT and an optical network unit ONU, and the OLT passes the optical distribution network. For the connection between the specific structure of the ONU and the functions performed by the respective modules, refer to the description of the embodiment of the ONU. For the OLT, refer to the description of the OLT related embodiment.

The above embodiment of the present invention provides that the OLT does not need to specify a basic port for the ONU, and therefore It is used by various ONUs to report the related attribute information of the port that is registered and reported by the ONU every time the registration is reported. It also needs to report the attribute information of the port other than the port of the ONU. Through the table, the OLT can Knowing the information about all ports under the ONU, the OLT can know which ports belong to the same ONU through the table, and solve the problem of port management of the OLT to multiple port ONUs in the next-generation PON system, which greatly simplifies the management of the ONU. The process improves the reliability of the system.

In the above embodiments, the descriptions of the various embodiments are different, and the details that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence. Because certain steps may be performed in other sequences or concurrently in accordance with the present invention. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

In the several embodiments provided herein, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above units is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. Go to another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, ie may be located in one place, or It can also be distributed to multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The above-described integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. The instructions include a plurality of instructions for causing a computer device (which may be a personal computer, server or network device, etc., and in particular a processor in a computer device) to perform all or part of the steps of the above-described methods of various embodiments of the present invention. The foregoing storage medium may include: a U disk, a mobile hard disk, a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM), and the like. The medium of the code.

The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the embodiments are modified, or the equivalents of the technical features are replaced by the equivalents of the technical solutions of the embodiments of the present invention.

Claims

A communication method for a passive optical network, the method comprising:

The optical network unit ONU sends a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU;

The ONU receives the first logical link identifier LLID1;

The ONU sends a message including capability set information, where the capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the The message of the capability set information is a registration confirmation message.
The method according to claim 1, wherein the capability set information further comprises at least one of: information indicating whether the other port is available, a number of ports of the ONU, and a port type of the ONU.
The method of claim 1 further comprising:

The ONU sends another registration request message, where the other registration request message includes: another port identifier Portx of the ONU and another vMAC address vMACx address of the ONU;

The ONU receives a logical link identifier LLIDx sent by the OLT for other ports; the x is an integer greater than 1.
A communication method for a passive optical network, the method comprising:

The optical line terminal OLT receives the registration request message, where the registration request message includes: the first port identifier Port1 of the ONU and the first virtual medium intervention control vMAC1 address of the ONU;

The OLT sends a first logical link identifier LLID1 to the first port of the ONU in response to the registration request message;

The OLT receives a message including capability set information, where the capability set information of the ONU includes: The other port of the ONU identifies a mapping of Portx and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The OLT generates a table, and the table includes: LLID1, a mapping relationship between Port1 of the ONU and a vMAC1 address of the ONU, and a mapping relationship between other Portx of the ONU and other vMACx addresses.
The method according to claim 4, wherein the capability set information further comprises at least one of: information indicating whether the other port is available, a number of ports of the ONU, and a port type of the ONU.
The method of claim 4, wherein the method further comprises:

The OLT receives another registration request message, where the other registration request message includes: another port identifier Portx of the ONU and another vMAC address vMACx address of the ONU;

The OLT sends a logical link identifier LLIDx assigned to other ports; the x is an integer greater than one.
An optical network unit ONU, characterized in that the ONU comprises:

a first sender, configured to send a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and a message including capability set information is sent, The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The first receiver is configured to receive the first logical link identifier LLID1.
The ONU according to claim 7, wherein the capability set information further comprises at least one of: information indicating whether the other port is available, a number of ports of the ONU, and The port type of the ONU.
An optical line terminal OLT, characterized in that the OLT comprises:

a second receiver, configured to receive a registration request message, where the registration request message includes: a first port identifier Por1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and receiving a message including capability set information, The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The processor is configured to: in response to the registration request message, assign a first logical link identifier LLID1 to the first port of the ONU; generate a table, where the table entry includes at least: LLID1, Port1 of the ONU A mapping relationship between the mapping relationship with the vMAC1 address of the ONU and other IDXs of the ONU and other vMACx addresses.
The OLT according to claim 9, wherein the capability set information further comprises at least one of: information indicating whether the other port is available, a number of ports of the ONU, and a port type of the ONU.
The OLT according to any one of claims 9-10, wherein the second receiver is further configured to receive another registration request message, where the other registration request message includes: another port identifier of the ONU, Portx, and the Mapping of other vMAC address vMACx addresses of the ONU;

The second transmitter is further configured to send a logical link identifier LLIDx allocated to other ports of the ONU; the x is an integer greater than 1.
A passive optical network system PON, the system comprising: an optical line terminal OLT and an optical network unit ONU, wherein the OLT is connected to the ONU through an optical distribution network, wherein the ONU is as claimed in claim 7-8 An ONU; and/or the OLT as described in claims 9-11 OLT.
A data communication device, characterized in that the data communication device comprises:

a first sending unit, configured to send a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and sending a message including capability set information, The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The first receiving unit is configured to receive the first logical link identifier LLID1.
A data communication apparatus according to claim 13, wherein said capability set information further comprises at least one of: information indicating whether said other port is available, a number of ports of said ONU, and said ONU Port type.
A data communication device, characterized in that the data communication device comprises:

a second receiving unit, configured to receive a registration request message, where the registration request message includes: a first port identifier Port1 of the ONU and a first virtual medium intervention control vMAC1 address of the ONU; and receiving a message including capability set information, The capability set information of the ONU includes: mapping of other port identifiers Portx of the ONU and other vMACx addresses of the ONU, where x is an integer greater than 1 or the capability set query information is a registration confirmation message;

The processing unit is configured to: in response to the registration request message, assign a first logical link identifier LLID1 to the first port of the ONU; generate a table, where the table includes: LLID1, Port1 of the ONU, and the ONU The mapping relationship between the vMAC1 address and the other Portx of the ONU and other vMACx addresses.
The data communication device according to claim 15, wherein said capability set letter The information further includes at least one of: information indicating whether the other port is available, a number of ports of the ONU, and a port type of the ONU.
The data communication device according to any one of claims 15-16, wherein the second receiving unit is further configured to receive and receive another registration request message, where the other registration request message includes: another port identifier of the ONU, Portx And other vMAC address vMACx addresses of the ONU;

The second sending unit is further configured to send a logical link identifier LLIDx allocated to other ports of the ONU; the x is an integer greater than 1.