WO2017097008A1 - Access method and apparatus for multiple optical network units, and storage medium - Google Patents

Abstract

Disclosed in an embodiment of the present invention is an access method for multiple optical network units (ONUs). The method comprises: virtualizing more than one ONUs on an ONU card, each virtualized ONU being corresponding to an SN and a Register-ID used for identification, reporting each ONU to an OLT in a registration stage, acquiring an ONU-ID, and maintaining a piece of MAC information for the virtualized ONU; in an uplink direction, acquiring a sending timeslot of each virtualized ONU according to a bandwidth allocated to each virtualized ONU, performing assembly according to the allocated bandwidth to form uplink burst data, and carrying the ONU-ID in the sending timeslot and sending the sending timeslot to the OLT; in a downlink direction, when ONU frame data sent by the OLT is received and after a boundary of a downlink frame is defined, descrambling is performed and FEC decoding is performed, separately acquiring a PLOAM message, bandwidth information, GEM payload data and an OMCI message; and after the PLOAM message and the OMCI message are processed, dynamically updating the MAC information according to OLT configurations; and in different processing units, each virtualized ONU correspondingly processes the PLOAM message, the bandwidth information, the GEM payload data and the OMCI message belonging to the virtualized ONU. Also disclosed in embodiments of the present invention are an access apparatus for multiple ONUs, and a computer storage medium.

Description

Method, device and storage medium for accessing multiple optical network units Technical field

The present invention relates to the field of PON (Passive Optical Network) access technology, and in particular, to a method, an apparatus, and a computer storage medium for accessing multiple optical network units (ONUs).

Background technique

In recent years, with the rapid development of the access market worldwide and the rapid development of full-service operations, the existing PON technology standards are in terms of bandwidth requirements, service support capabilities, and performance enhancement of access node devices and supporting devices. , are facing new upgrade needs. At present, NGPON (N Gigabit-Capable Passive Optical Network) is in commercial stage. NGPON includes two standards: NGPON1 and NGPON2. Among them, NGPON2 is the next generation technology of optical access network, mainly used for Realize the protocol function defined by ITU-T G.989.3; and provide 10G for uplink broadcast and 40G for downlink broadcast, and realize optical fiber terminal (OLT, Optical Line Terminal) connection with multiple ONUs by optical splitter . Among them, the topology of a typical PON system is defined in the ITU-T G.989.1 protocol, as shown in Figure 1.

In the PON system shown in FIG. 1, the ONU acts as a user terminal of the PON system and occupies one optical branch; due to the limitation of optical transmission attenuation, the optical split ratio of each pair of wavelength channels limits access to the PON system. The number of ONUs. For each ONU user, the bandwidth provided by the PON system is sufficient compared to the bandwidth requirement of the ordinary user. Therefore, some bandwidth may not be fully utilized in the bandwidth provided by the PON system, causing some hardware to be idle. This causes a waste of hardware resources of the PON system, and also increases the networking cost of the PON system.

In order to solve the above problem, an existing solution is to place the ONU closer to the central office. On the network node, more users are connected by providing more user network interfaces (UNI, User Networks Interface) on the ONU. However, from the perspective of the management layer, the multiple users share the same ONU, and as an OLT management entity, multiple users share a management channel, and thus the method is limited to the management of the user.

Summary of the invention

In view of the above, the embodiment of the present invention is to provide a method, a device, and a computer storage medium for multiple ONUs, which can implement access and management of multiple ONUs on an ONU board of an optical branching terminal, and solve the problem. In the prior art, the number of ONU accesses is limited, and when the number of accesses is small, the bandwidth utilization is not high, and the hardware is idle.

To achieve the above objective, the technical solution of the embodiment of the present invention is implemented as follows:

An embodiment of the present invention provides a method for accessing multiple ONUs. One ONU card is virtualized on one ONU board, and each virtual ONU corresponds to a serial number (SN) and a registration identifier Register- The ID is reported to the optical line terminal OLT during the registration phase, and the ONU identifier is obtained, and a media access control (MAC) information is maintained for the virtual ONU. The method includes:

In the uplink direction, according to the bandwidth allocated by each virtual ONU, the transmission time slot of each virtual ONU is acquired, and the burst data is assembled according to the allocated bandwidth, and the ONU-ID is carried in the transmission time slot. OLT;

In the downlink direction, when the ONU frame data sent by the OLT is received, and after downlink frame delimitation, descrambling, and forward error correction (FEC) decoding, physical layer operation management and maintenance (PLOAM, respectively) is acquired. Physical Layer Operations And Maintenance) message, bandwidth information, GPON Encapsulation Mode (GEM, GPON Encapsulation Mode) payload data, and Optical Network Unit Management and Control Interface (OMCI) message processing; processing of the PLOAM message and OMCI message Afterwards, dynamically updating the MAC information according to the OLT configuration;

In different processing units, each virtual ONU processes the PLOAM message, bandwidth information, GEM payload data, and OMCI message belonging to itself.

In the foregoing solution, the MAC information includes: an ONU-ID of the virtual ONU, an Alloc-ID, an Allocation Identifier, a Port-ID (Port Identifier), an equalization delay, and a key.

In the above solution, in the different processing units, each virtual ONU processes the PLOAM message, the bandwidth information, the GEM payload data, and the OMCI message that belong to itself, including:

Each virtual ONU filters a PLOAM message and a broadcast PLOAM message that are sent to the local virtual ONU according to the locally saved ONU-ID, and processes the PLOAM message and the broadcast PLOAM message;

Each virtual ONU filters the bandwidth that is sent to the local virtual ONU according to the locally saved Alloc-ID, and determines the bandwidth time slot of each virtual ONU according to the correspondence between the Alloc-ID and the ONU-ID;

After the downlink GEM data is bounded, each virtual ONU filters the GEM packets that are sent to the local virtual ONU according to the locally saved Port-ID.

After decrypting and reassembling the GEM packet fragments, each virtual ONU filters the OMCI message sent to the local virtual ONU according to the locally saved Port-ID, and processes the OMCI message.

In the above solution, the configuration information of the virtual ONU is updated according to the content of the PLOAM message and the broadcast PLOAM message, and a corresponding uplink PLOAM message is generated, and the generated uplink PLOAM message is written into a buffer queue corresponding to each PLOAM channel. Waiting to be sent in the assigned time slot.

In the above solution, the multiple ONUs share the downlink receiving port and the uplink sending port of the passive optical network PON system, and register with the same group of downlink channels and uplink channels of the PON.

An embodiment of the present invention further provides an access device for multiple ONUs, where the device includes:

The configuration module is configured to virtualize more than one ONU on an ONU board, and each virtual ONU corresponds to a SN and a Register-ID for identification, and reports to the OLT during the registration phase to obtain an ONU-ID and is the virtual ONU. Maintain a MAC message;

The uplink processing module is configured to acquire the transmission time slot of each virtual ONU according to the bandwidth allocated by each virtual ONU in the uplink direction, and assemble the uplink burst data according to the allocated bandwidth, and carry the ONU-ID in the transmission time slot. Sent to the OLT;

The downlink processing module is configured to receive, in the downlink direction, the ONU frame data sent by the OLT in the uplink processing module, and obtain the PLOAM message, the bandwidth information, and the downlink frame delimitation, descrambling, and FEC decoding, respectively. GEM payload data and OMCI message; after processing the PLOAM message and the OMCI message, dynamically updating the MAC information according to the OLT configuration;

The data and message processing module is configured to, in different processing units, each virtual ONU processes the PLOAM message, the bandwidth information, the GEM payload data, and the OMCI message belonging to itself.

In the foregoing solution, the MAC information includes: an ONU-ID, an Alloc-ID, a GEM Port-ID, an equalization delay, and a key of the virtual ONU.

In the above solution, the data and message processing module further includes:

The PLOAM message processing module is configured to filter the PLOAM message and the broadcast PLOAM message that are sent to the local virtual ONU according to the locally saved ONU-ID, and process the PLOAM message and the broadcast PLOAM message;

The bandwidth information parsing module is configured to: according to the locally saved Alloc-ID, filter the bandwidth that is sent to the local virtual ONU, and determine the bandwidth time slot of each virtual ONU according to the correspondence between the Alloc-ID and the ONU-ID;

The GEM payload data processing module is configured to filter the GEM packets that are sent to the local virtual ONU according to the locally saved Port-ID after the downlink GEM data is bounded.

The OMCI message processing module is configured to filter the OMCI message sent to the local virtual ONU according to the locally saved Port-ID after decrypting and reassembling the GEM packet fragment, and process the OMCI message.

In the above solution, the PLOAM message processing module is further configured to update the configuration information of the virtual ONU according to the PLOAM message and the content of the broadcast PLOAM message, and generate a corresponding uplink PLOAM message, and write the generated uplink PLOAM message. Into the buffer queue corresponding to each PLOAM channel, waiting to be sent in the allocated time slot.

In the above solution, the multiple ONUs share the downlink receiving port and the uplink sending port of the PON system, and register with the same group of downlink channels and uplink channels of the PON.

The embodiment of the invention provides a computer storage medium, wherein the computer storage medium stores a computer program, and the computer program is used to execute the access method of the plurality of ONUs.

The access method, device and computer storage medium of the multiple ONUs provided by the embodiments of the present invention virtualize more than one ONU on one ONU board, and each virtual ONU corresponds to a SN and a Register-ID for identification. The registration phase is reported to the OLT to obtain the ONU-ID and maintain a MAC information for the virtual ONU. In the uplink direction, the transmission time slot of each virtual ONU is obtained according to the bandwidth allocated by each virtual ONU, and the allocation is performed according to the allocation. The bandwidth is assembled into uplink burst burst data, and the ONU-ID is carried to the OLT in the sending time slot; when the ONU frame data sent by the OLT is received in the downlink direction, and the downlink frame delimitation, descrambling, and FEC decoding are performed in the downlink direction. After obtaining the PLOAM message, the bandwidth information, the GEM payload data, and the OMCI message respectively; after processing the PLOAM message and the OMCI message, dynamically updating the MAC information according to the OLT configuration; in different processing units, each virtual The ONU processes the PLOAM message, bandwidth information, GEM payload data, and OMCI message belonging to itself. In this way, more ONU access functions can be implemented on an optical network interface. Compared with the prior art, more ONUs can be accessed under the same optical split ratio, so that the bandwidth is fully utilized, thereby Do not increase ONU On the basis of the number of boards, more OLT management entities are provided; and the number of ONUs in the NGPON2 network is increased at a small hardware cost, and the networking cost of the entire network is reduced.

DRAWINGS

1 is a schematic diagram of a topology structure of a typical PON defined by the G.989.1 protocol in the prior art;

2 is a schematic flowchart of implementing an access method of multiple ONUs according to an embodiment of the present invention;

3 is a schematic diagram showing the functions and logical relationships of various component modules of different processing units according to an embodiment of the present invention;

4 is a schematic flowchart of an extended PLOAM message processing process according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a registration management process of an ONU according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a component of an access device of multiple ONUs according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the implementation process of the access method of multiple ONUs in the embodiment of the present invention includes the following steps:

In step 200, one or more ONUs are virtualized on one ONU board, and each virtual ONU corresponds to a SN and a registration identifier (Register-ID) for identification, and is reported to the OLT during the registration phase to obtain the ONU-ID, and The virtual ONU maintains a MAC message;

Here, how to virtualize multiple ONUs is a prior art, and details are not described herein again.

Step 201: In the uplink direction, acquire the transmission time slot of each virtual ONU according to the bandwidth allocated by each virtual ONU, and assemble the uplink burst data according to the allocated bandwidth, and carry the ONU in the transmission time slot. The ID is sent to the OLT;

Here, the multiple ONUs share the downlink receiving port and the uplink sending port of the PON system, and are registered to the same group of downlink channels and uplink channels of the PON.

Here, since the propagation delay and the response time of the respective ONUs are the same, the OLT allocates equal equalization delays, so that the bandwidth slots allocated to the respective ONUs do not affect each other when viewed from the transmitting side of the ONU. It can ensure that the data of each ONU is sent accurately and without conflict.

Step 202: In the downlink direction, when receiving the ONU frame data sent by the OLT, and after downlink frame delimitation, descrambling, and FEC decoding, respectively acquiring PLOAM messages, bandwidth information, GEM payload data, and OMCI messages; After the PLOAM message and the OMCI message are processed, the MAC information is dynamically updated according to the OLT configuration;

The MAC information includes: an ONU-ID, an Alloc-ID, a GEM Port-ID, an equalization delay, and a key of the virtual ONU; and the MAC information is maintained to update the MAC information in time.

Step 203: In different processing units, each virtual ONU performs corresponding processing on its own PLOAM message, bandwidth information, GEM payload data, and OMCI message.

Here, the different processing unit includes: a PLOAM message processing module, a bandwidth information parsing module, a GEM payload data processing module, and an OMCI message processing module in the OLT, and functions and logical relationships of the four constituent modules of the different processing units As shown in Figure 3.

In the different processing units, each virtual ONU processes the PLOAM message, the bandwidth information, the GEM payload data, and the OMCI message belonging to itself, including:

Each virtual ONU filters a PLOAM message and a broadcast PLOAM message that are sent to the local virtual ONU according to the locally saved ONU-ID, and processes the PLOAM message and the broadcast PLOAM message;

Each virtual ONU filters the bandwidth that is sent to the local virtual ONU according to the locally saved configuration identifier (Alloc-ID), and determines the bandwidth time slot of each virtual ONU according to the correspondence between the Alloc-ID and the ONU-ID;

Here, how to determine the bandwidth time slot of each virtual ONU according to the corresponding relationship between the Alloc-ID and the ONU-ID belongs to the prior art, and details are not described herein again.

After the downlink GEM data is bounded, each virtual ONU filters the GEM packets that are sent to the local virtual ONU according to the locally saved port identifier (Port-ID).

After decrypting and reassembling the GEM packet fragments, each virtual ONU filters the OMCI message sent to the local virtual ONU according to the locally saved Port-ID, and processes the OMCI message.

Here, in the downlink direction, the NGPON2 system maintains a set of unicast keys and multicast keys for each virtual ONU in a normal working state, and generates a respective master key by using different Register-IDs of the respective virtual ONUs, and according to The process specified in the G.989.3 protocol independently generates and updates the keys of each virtual ONU.

The key is obtained according to the correspondence between the ONU-ID and the Port-ID; when the GEM packet needs to be decrypted, the key may be indexed according to a key index (key_index) and a key pair in the GEM header. Decrypt.

The key maintained by the NGPON2 system is also applicable to the encryption process of the uplink GEM packet, which will not be repeated here.

The technical solutions of the access methods of multiple ONUs provided by the present invention are further described in detail below:

In the embodiment of the present invention, the extended PLOAM message processing flow is shown in FIG. 4. The NGPON2 system maintains a broadcast PLOAM message channel, and maintains a separate PLOAM message channel for each registered virtual ONU. In FIG. 4, the NGPON2 system divides the independent PLOAM message channel into n sub-channels by time slot, and each sub-channel corresponds to one ONU-ID; when a valid Assign ONU-ID is received, the NGPON2 system correspondingly Add a PLOAM message subchannel; that is, one virtual ONU corresponds to one PLOAM message subchannel. Here, the valid Assign ONU-ID refers to the message carried The SN matches the local virtual ONU; in addition, the PLOAM message processing module directly processes the PLOAM messages of the respective virtual ONUs and responds to the downlink PLOAM messages.

When receiving the unicast PLOAM message sent to a virtual ONU, the PLOAM message processing module updates the configuration information of the virtual ONU according to the content of the unicast PLOAM message, and the configuration information includes an Alloc-ID, a key, etc., and The responding uplink PLOAM message is written into the cache queue of the virtual ONU; when the OLT requests to send the PLOAM message, the PLOAM message is read out from the buffer queue, and the content of the read PLOAM message is filled into the uplink Burst and sent. Go out. When the PLOAM transmission flag in the bandwidth allocated to the virtual ONU is 1, it indicates that the OLT requests to send a PLOAM message. At the same time, the status of the PLOAM buffer queue in the virtual ONU can be reported to the OLT through the Ind field in the Burst Header. When receiving the PLOAM message sent by the broadcast, the configuration information of all the virtual ONUs is updated according to the content of the PLOAM message. Finally, the performance of all the maintained PLOAM channels is monitored, and the corresponding monitoring information is sent to the OLT through the OMCI channel.

Each virtual ONU is preset with a corresponding cache queue for storing PLOAM messages.

Here, in all the virtual ONUs, the content of the downlink broadcast message configuration of one virtual ONU may be shared by other virtual ONUs, and the content configured by the unicast message belongs to a single virtual ONU.

Similar to the processing of the PLOAM message, the NGPON2 system also provides an OMCI channel for each virtual ONU in a normal working state, and the OMCI channel is distinguished by the default Port-ID of each virtual ONU. Each virtual ONU has a default Port-ID and Alloc-ID equal to the ONU-ID, which is used for OMCI reception and transmission. In the downlink direction, after the GEM decrypts and reassembles, the OMCI message sent to the local virtual ONU is filtered according to the locally saved default Port-ID, and the OMCI message is processed accordingly; after the content of the OMCI is parsed, the configuration of the corresponding virtual ONU is updated. Information, such as the number of Port-IDs, encryption status, multicast key, etc., and generate response OMCI data, and then cache the generated OMCI data to the virtual ONU In the TCONT (Transmission Containers), after the virtual ONU receives the default TCONT allocation time slot, the OMCI data is read out and encapsulated into a GEM packet carrying the default Port-ID, which is sent as the burst payload. .

When the OLT requires the monitoring information of the virtual ONU to be reported through the OMCI channel, and the local virtual ONU shares the device and the downlink receiving data, the monitoring information of the device and the downlink is shared by all ONUs. However, the uplink transmission and PLOAM channels are independently monitored for each virtual ONU and are reported to the OLT when needed. When the optical module is powered off abnormally, all the virtual ONUs in the local working state set the Dying-gasp bit in the uplink burst Ind field to 1.

Here, the encryption status information of each Port-ID maintained by the system is obtained through the OMCI channel corresponding to the virtual ONU; when the virtual ONU sends the uplink data to the OLT, the uplink data enters the OLT as an optical signal.

5 is a schematic diagram of a registration management process of a virtual ONU according to an embodiment of the present invention. After receiving a broadcast SN bandwidth in a downlink bandwidth map (BWMAP, BandWidth Map), the state of the local virtual ONU is checked, that is, whether a virtual ONU is not registered, If it is checked that the virtual ONU is registered, the broadcast bandwidth is ignored, and only the data directly allocated to the virtual ONU and the PLOAM bandwidth are processed; if it is checked that the virtual ONU is not registered, then when multiple virtual ONUs are in the registration activation process, the reception is received. The broadcast registration and ranging authorizations are sent to only one of the virtual ONUs, ensuring that the virtual ONUs in the local virtual ONUs respond to the registration request and report the corresponding SNs during the quiet time of the OLT. After the virtual ONU receives the assigned ONU-ID, the software system maintains a virtual ONU information and adds a PLOAM and OMCI management channel. After the virtual ONU completes the ranging and enters the O5 state, the parsed SN request bandwidth is sent to another virtual ONU, and the registration process of another virtual ONU is started. After all virtual ONUs have completed registration, the SN request bandwidth is no longer resolved.

In order to implement the foregoing method, an embodiment of the present invention further provides an access device for multiple ONUs, such as As shown in FIG. 6, the device includes a configuration module 61, an uplink processing module 62, a downlink processing module 63, and a data and message processing module 64.

The configuration module 61 is configured to virtualize one or more ONUs on one ONU board, and each virtual ONU corresponds to a SN and a Register-ID for identification, and reports to the OLT during the registration phase to obtain an ONU-ID and for the virtual The ONU maintains a MAC message;

The uplink processing module 62 is configured to acquire, in the uplink direction, the transmission time slot of each virtual ONU according to the bandwidth allocated by each virtual ONU, and assemble the uplink burst data according to the allocated bandwidth, and carry the ONU in the transmission time slot. The ID is sent to the OLT;

The downlink processing module 63 is configured to obtain the PLOAM message and the bandwidth respectively after receiving the ONU frame data sent by the OLT in the uplink processing module 62 in the downlink direction, and after downlink frame delimitation, descrambling, and FEC decoding. Information, GEM payload data, and OMCI message; after processing the PLOAM message and the OMCI message, dynamically updating the MAC information according to the OLT configuration;

The data and message processing module 64 is configured to, in different processing units, each virtual ONU process the PLOAM message, the bandwidth information, the GEM payload data, and the OMCI message belonging to itself.

The MAC information includes: an ONU-ID, an Alloc-ID, a GEM Port-ID, an equalization delay, and a key of the virtual ONU.

Here, the data and message processing module 64 further includes the following four sub-modules: a PLOAM message processing module, a bandwidth information parsing module, a GEM payload data processing module, and an OMCI message processing module;

The PLOAM message processing module is configured to filter the PLOAM message and the broadcast PLOAM message that are sent to the local virtual ONU according to the locally saved ONU-ID, and process the PLOAM message and the broadcast PLOAM message;

The bandwidth information parsing module is configured to filter and send to the local according to the locally saved Alloc-ID The bandwidth of the virtual ONU, and determining the bandwidth time slot of each virtual ONU according to the correspondence between the Alloc-ID and the ONU-ID;

The GEM payload data processing module is configured to filter the GEM packets that are sent to the local virtual ONU according to the locally saved Port-ID after the downlink GEM data is bounded.

The OMCI message processing module is configured to filter the OMCI message sent to the local virtual ONU according to the locally saved Port-ID after decrypting and reassembling the GEM packet fragment, and process the OMCI message.

The PLOAM message processing module is further configured to update the configuration information of the virtual ONU according to the PLOAM message and the content of the broadcast PLOAM message, and generate a corresponding uplink PLOAM message, and write the generated uplink PLOAM message to each In the buffer queue corresponding to the PLOAM channel, waiting to be sent in the allocated time slot.

Here, the multiple ONUs share the downlink receiving port and the uplink sending port of the PON system, and register with the same group of downlink channels and uplink channels of the PON.

In practical applications, the configuration module 61, the uplink processing module 62, the downlink processing module 63, and the data processing module 64 may each be a central processing unit (CPU) located on the ONU, and a microprocessor (MPU, Micro Processor Unit), Digital Signal Processor (DSP), or Field Programmable Gate Array (FPGA).

In the embodiment of the present invention, one or more ONUs are virtualized on one ONU board, and each virtual ONU corresponds to a SN and a Register-ID for identification, and is reported to the OLT during the registration phase to obtain an ONU-ID and maintain the virtual ONU. A MAC information; in the uplink direction, according to the bandwidth allocated by each virtual ONU, the transmission time slot of each virtual ONU is acquired, and the uplink burst data is assembled according to the allocated bandwidth, and the ONU-ID is transmitted in the transmission time slot. To the OLT; in the downlink direction, when receiving the ONU frame data sent by the OLT, and after downlink frame delimitation, descrambling, and FEC decoding, respectively acquiring PLOAM messages, bandwidth information, GEM payload data, and OMCI a message; after processing the PLOAM message and the OMCI message, dynamically updating the MAC information according to the OLT configuration; in different processing units, each virtual ONU pair belongs to its own PLOAM message, bandwidth information, GEM payload data, and The OMCI message is processed accordingly. In this way, more ONU access functions can be implemented on an optical network interface. Compared with the prior art, more ONUs can be accessed under the same optical split ratio, so that the bandwidth is fully utilized, thereby On the basis of not increasing the number of ONU boards, more OLT management entities are provided; and the number of ONUs in the NGPON2 network is increased at a small hardware cost, and the networking cost of the entire network is reduced.

The embodiment of the invention further describes a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the access methods of the plurality of ONUs described in the foregoing embodiments.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

These computer program instructions can also be stored in a bootable computer or other programmable data processing The apparatus is readable in a computer readable memory in a particular manner such that instructions stored in the computer readable memory produce an article of manufacture comprising instruction means implemented in one or more flows and/or block diagrams of the flowchart The function specified in the box or in multiple boxes.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in Within the scope of protection of the present invention.

Industrial applicability

In the embodiment of the present invention, one or more ONUs are virtualized on one ONU board, and each virtual ONU corresponds to a SN and a Register-ID for identification, and is reported to the OLT during the registration phase to obtain the ONU-ID, and is the virtual The ONU maintains a MAC information. In the uplink direction, the transmission time slot of each virtual ONU is obtained according to the bandwidth allocated by each virtual ONU, and the uplink burst data is assembled according to the allocated bandwidth, and the ONU is carried in the transmission time slot. The ID is sent to the OLT; in the downlink direction, when the ONU frame data sent by the OLT is received, and after the downlink frame delimitation, descrambling, and FEC decoding, the PLOAM message, the bandwidth information, the GEM payload data, and the OMCI message are respectively obtained. After processing the PLOAM message and the OMCI message, dynamically updating the MAC information according to the OLT configuration; in different processing units, each virtual ONU pair belongs to its own PLOAM message, bandwidth information, GEM payload data, and OMCI The message is processed accordingly. In this way, more ONU access functions can be implemented on an optical network interface.

Claims (11)

An access method of multiple optical network unit ONUs, which virtualizes more than one ONU on one ONU board, and each virtual ONU corresponds to a serial number SN and a registration identifier Register-ID for identification, and is reported to the registration stage. The optical line terminal OLT obtains an ONU identifier ONU-ID, and maintains a media access control MAC information for the virtual ONU; the method includes: In the uplink direction, according to the bandwidth allocated by each virtual ONU, the transmission time slot of each virtual ONU is acquired, and the uplink burst data is assembled according to the allocated bandwidth, and the ONU-ID is carried in the transmission time slot and sent to the OLT; In the downlink direction, when the ONU frame data sent by the OLT is received, and after the downlink frame delimitation, descrambling, and forward error correction FEC decoding, the physical layer operation management and maintenance PLOAM message, bandwidth information, and GPON encapsulation mode are respectively obtained. The GEM payload data and the optical network unit management control interface OMCI message; after processing the PLOAM message and the OMCI message, dynamically updating the MAC information according to the OLT configuration; In different processing units, each virtual ONU processes the PLOAM message, bandwidth information, GEM payload data, and OMCI message belonging to itself. The method according to claim 1, wherein the MAC information comprises: an ONU-ID of the virtual ONU, a configuration identifier Alloc-ID, a GEM port identifier Port-ID, an equalization delay, and a key. The method according to claim 2, wherein in the different processing units, each virtual ONU processes the PLOAM message, the bandwidth information, the GEM payload data, and the OMCI message belonging to itself, including: Each virtual ONU filters a PLOAM message and a broadcast PLOAM message that are sent to the local virtual ONU according to the locally saved ONU-ID, and processes the PLOAM message and the broadcast PLOAM message; Each virtual ONU filters the bandwidth that is sent to the local virtual ONU according to the locally saved Alloc-ID, and determines each virtual ONU according to the correspondence between the Alloc-ID and the ONU-ID. Bandwidth slot After the downlink GEM data is bounded, each virtual ONU filters the GEM packets that are sent to the local virtual ONU according to the locally saved Port-ID. After decrypting and reassembling the GEM packet fragments, each virtual ONU filters the OMCI message sent to the local virtual ONU according to the locally saved Port-ID, and processes the OMCI message. The method according to claim 3, wherein the method further comprises: updating configuration information of the virtual ONU according to the PLOAM message and the content of the broadcast PLOAM message, and generating a corresponding uplink PLOAM message, and generating the generated uplink. The PLOAM message is written into the buffer queue corresponding to each PLOAM channel, waiting to be sent in the allocated time slot. The method according to claim 1, wherein the plurality of ONUs share a downlink receiving port and an uplink transmitting port of the passive optical network PON system, and register with the same group of downlink channels and uplink channels of the PON. An access device for a plurality of ONUs, the device comprising: The configuration module is configured to virtualize more than one ONU on an ONU board, and each virtual ONU corresponds to a SN and a Register-ID for identification, and reports to the OLT during the registration phase to obtain an ONU-ID and is the virtual ONU. Maintain a MAC message; The uplink processing module is configured to acquire, in the uplink direction, the transmission time slot of each virtual ONU according to the bandwidth allocated by each virtual ONU, and assemble the uplink burst data according to the allocated bandwidth, and carry the ONU in the sending time slot. The ID is sent to the OLT; The downlink processing module is configured to receive, in the downlink direction, the ONU frame data sent by the OLT in the uplink processing module, and obtain the PLOAM message, the bandwidth information, and the downlink frame delimitation, descrambling, and FEC decoding, respectively. GEM payload data and OMCI message; after processing the PLOAM message and the OMCI message, dynamically updating the MAC information according to the OLT configuration; Data and message processing module configured to each virtual ONU pair in different processing units Corresponding to its own PLOAM message, bandwidth information, GEM payload data and OMCI message. The apparatus according to claim 6, wherein the MAC information comprises: an ONU-ID, an Alloc-ID, a GEM Port-ID, an equalization delay, and a key of the virtual ONU. The device according to claim 7, wherein the data and message processing module further comprises: The PLOAM message processing module is configured to filter the PLOAM message and the broadcast PLOAM message that are sent to the local virtual ONU according to the locally saved ONU-ID, and process the PLOAM message and the broadcast PLOAM message; The bandwidth information parsing module is configured to: according to the locally saved Alloc-ID, filter the bandwidth that is sent to the local virtual ONU, and determine the bandwidth time slot of each virtual ONU according to the correspondence between the Alloc-ID and the ONU-ID; The GEM payload data processing module is configured to filter the GEM packets that are sent to the local virtual ONU according to the locally saved Port-ID after the downlink GEM data is bounded. The OMCI message processing module is configured to filter the OMCI message sent to the local virtual ONU according to the locally saved Port-ID after decrypting and reassembling the GEM packet fragment, and process the OMCI message. The device according to claim 8, wherein the PLOAM message processing module is further configured to update configuration information of the virtual ONU according to the PLOAM message and the content of the broadcast PLOAM message, and generate a corresponding uplink PLOAM message, The generated uplink PLOAM message is written in the buffer queue corresponding to each PLOAM channel, and is waiting to be sent in the allocated time slot. The apparatus according to claim 6, wherein the plurality of ONUs share a downlink receiving port and an uplink sending port of the PON system, and register with the same group of downlink channels and uplink channels of the PON. A computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 1 to 5.

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