WO2014198017A1 - 虚拟化无源光网络的方法、装置和无源光网络虚拟化系统 - Google Patents
虚拟化无源光网络的方法、装置和无源光网络虚拟化系统 Download PDFInfo
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- WO2014198017A1 WO2014198017A1 PCT/CN2013/077058 CN2013077058W WO2014198017A1 WO 2014198017 A1 WO2014198017 A1 WO 2014198017A1 CN 2013077058 W CN2013077058 W CN 2013077058W WO 2014198017 A1 WO2014198017 A1 WO 2014198017A1
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- 238000013507 mapping Methods 0.000 claims description 135
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- 230000007175 bidirectional communication Effects 0.000 claims description 13
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- 238000005538 encapsulation Methods 0.000 claims description 2
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- 229940046166 oligodeoxynucleotide Drugs 0.000 description 75
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q11/0067—Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2869—Operational details of access network equipments
- H04L12/2878—Access multiplexer, e.g. DSLAM
- H04L12/2879—Access multiplexer, e.g. DSLAM characterised by the network type on the uplink side, i.e. towards the service provider network
- H04L12/2885—Arrangements interfacing with optical systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0895—Configuration of virtualised networks or elements, e.g. virtualised network function or OpenFlow elements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2854—Wide area networks, e.g. public data networks
- H04L12/2856—Access arrangements, e.g. Internet access
- H04L12/2863—Arrangements for combining access network resources elements, e.g. channel bonding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0064—Arbitration, scheduling or medium access control aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0077—Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
Definitions
- the present invention relates to the field of communications, and in particular, to a method and apparatus for virtualizing a passive optical network and a passive optical network virtualization system.
- FTTx has become a popular object in the access field due to its advantages of high bandwidth and long distance.
- the optical access technology featuring point-to-multipoint transmission namely Passive Optical Network (PON)
- PON Passive Optical Network
- the PON office uses a backbone fiber, which can be divided into dozens or more channels to connect users, greatly reducing the cost of network construction. It is the most cost-effective technical means of FTTx.
- PON technologies mainly include Ethernet Passive Optical Network (EPON) and Gigabit Passive Optical Network (GPON). The main difference is that different Layer 2 technologies are adopted. .
- Time-Division Multiplexing Access (TDMA)
- TDM Time-Division Multiplexing
- a solution provided by the prior art adopts different systems for different application scenarios. For example, for residential users, use TDM-PON (such as GPON or EPON), for wireless backhaul, use low-latency WDM-PON, or use wavelength superposition to stack the two systems together. User and wireless backhaul scenarios.
- TDM-PON such as GPON or EPON
- WDM-PON low-latency WDM-PON
- wavelength superposition to stack the two systems together.
- the embodiments of the present invention provide a method and an apparatus for virtualizing a passive optical network, and a passive optical network virtualization system, so as to reduce the complexity of operation and maintenance of the passive optical network system while meeting different requirements of different scenarios.
- An embodiment of the present invention provides a method for virtualizing a passive optical network, where the method includes: receiving a virtual passive optical network creation message, where the virtual passive optical network creation message includes an identifier of a virtual passive optical network to be created. a VPON ID and at least one wavelength stream identifier ⁇ - 3 ⁇ 4 ⁇ ID, the VPON ID is used to identify a virtual passive optical network composed of a virtual optical line terminal and the at least one optical network unit, the ⁇ -flow ID is used to identify a wavelength stream;
- Another embodiment of the present invention provides a method for virtualizing a passive optical network, where the method includes: receiving, by an optical network unit, a virtual passive optical network creation message, where the virtual passive optical network creation message includes a to-be-created message Identification of the virtual passive optical network VPON ID and at least one wavelength stream identifier ⁇ - 3 ⁇ 4 ⁇ ID;
- the optical network unit establishes a ⁇ - 3 ⁇ 4 ⁇ entry according to the VPON ID and the ⁇ - 3 ⁇ 4 ⁇ ID, to the
- the optical line terminal in the virtual passive optical network identified by the VPON ID reports registration information to establish a communication connection relationship with the optical line terminal, where the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry, and the ⁇ - 3 ⁇ 4 ⁇ entry includes light.
- Network element identification and the ID are included in the registration information.
- An embodiment of the present invention provides an apparatus for virtualizing a passive optical network, where the apparatus includes: a message receiving module, configured to receive a virtual passive optical network creation message, where the virtual passive optical network creation message includes a virtual to be created An identification VPON ID of the passive optical network and at least one wavelength flow identifier ⁇ - 3 ⁇ 4 ⁇ ID, the VPON ID being used to identify a virtual passive optical network consisting of a virtual optical line terminal and the at least one optical network unit, the ID Used to identify a wavelength stream;
- a communication connection establishing module configured to establish a communication connection relationship with at least one optical network unit in the virtual passive optical network identified by the VPON ID according to the VPON ID and the at least one ⁇ - 3 ⁇ 4 ⁇ ID.
- Another embodiment of the present invention provides an apparatus for virtualizing a passive optical network, where the apparatus includes: a message receiving module, configured to receive a virtual passive optical network creation message, where the virtual passive optical network is created.
- the message includes an identification VPON ID of the virtual passive optical network to be created and at least one wavelength Flow identification ID;
- a registration module configured to establish a ⁇ - 3 ⁇ 4 ⁇ entry according to the VPON ID and the ⁇ - 3 ⁇ 4 ⁇ ID, and report registration information to the optical line terminal in the virtual passive optical network identified by the VPON ID to establish the optical line terminal
- the communication connection relationship, the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry, and the ⁇ - 3 ⁇ 4 ⁇ entry includes an optical network unit identifier and the ID.
- An embodiment of the present invention provides a passive optical network virtualization system, where the system includes an upper management control module, at least one optical line terminal, an arrayed waveguide grating, an optical splitter, and at least one optical network unit, and the arrayed waveguide grating
- the optical line terminal and the optical splitter are respectively connected by using an optical fiber
- the optical splitter and the optical network unit are connected by using an optical fiber;
- the upper management control module is configured to create a virtual passive optical network, and send a virtual passive optical network creation message to the optical line terminal, where the virtual passive optical network creation message includes a virtual passive optical network to be created. Identifying a VPON ID and at least one wavelength flow identification ID, the VPON ID is used to identify a virtual passive optical network composed of a virtual optical line terminal and the at least one optical network unit, where the ⁇ - 3 ⁇ 4 ⁇ ID is used to identify the Describe a wavelength stream in which the optical line terminal and the optical network unit perform two-way communication;
- the optical line terminal is configured to receive a virtual passive optical network creation message sent by the upper layer management control module, and the virtual passive optical network identified by the VPON ID according to the VPON ID and at least one ⁇ - 3 ⁇ 4 ⁇ ID At least one of the optical network units establishes a communication connection relationship, and sends the virtual passive optical network creation message to the optical network unit;
- the arrayed waveguide grating is configured to multiplex a wavelength stream in which the optical line terminal and the optical network unit perform bidirectional communication in a downlink direction, and then inject the optical splitter into the optical line terminal and the optical network unit in an uplink direction.
- a wavelength stream that performs bidirectional communication is demultiplexed and sent to the optical line terminal;
- the optical splitter is configured to broadcast the wavelength stream injected by the arrayed waveguide grating in a downlink direction, and the The wavelength stream tuned by the optical network unit is sent to the arrayed waveguide grating;
- the optical network unit is configured to receive a virtual passive optical network creation message sent by the optical line terminal to establish a ⁇ - 3 ⁇ 4 ⁇ entry, according to the VPON ID, reporting the registration information to the optical line terminal in the virtual passive optical network identified by the VPON ID, to establish a communication connection relationship with the optical line terminal, where the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry, the ⁇ - The 3 ⁇ 4 ⁇ entry contains the
- Another embodiment of the present invention provides a passive optical network virtualization system, where the system includes an upper management control module, at least two optical line terminals, at least two arrayed waveguide gratings, at least two optical splitters, and at least two An optical network unit and at least one cyclic arrayed waveguide grating, the at least two optical line terminals comprising at least two optical modules, each of the at least two optical modules being optically coupled to the grid by the optical fiber
- the arrayed waveguide grating is connected to the optical splitter, and the at least two opticals are divided into the upper layer management control module, configured to create a virtual passive optical network, and send a virtual passive optical network creation message to the optical line
- the virtual passive optical network creation message includes an identifier VPON ID of the virtual passive optical network to be created, a wavelength flow identifier ⁇ - 3 ⁇ 4 ⁇ ID, an optical module identifier M ID, and an optical distribution network identifier ODN ID, where the VPON ID is used.
- identifying a virtual passive optical network consisting of a virtual optical line terminal and the at least one optical network unit, where the ⁇ - 3 ⁇ 4 ⁇ ID is used to identify the The optical line terminal and the optical network unit perform a two-way communication wavelength stream, where the M ID is used to identify an optical module to which the wavelength stream identified by the ⁇ - 3 ⁇ 4 ⁇ ID belongs, and the ODN ID is used to identify the ⁇ - 3 ⁇ 4 ⁇ ID identifier a light distribution network to which a wavelength stream belongs;
- the optical line terminal is configured to receive a virtual passive optical network creation message sent by the upper layer management control module, according to the VPON ID, ⁇ -flow ID, M ID, and ODN ID, and the VPON ID and the M ID. Establishing a communication connection relationship with at least one of the optical network units in the virtual passive optical network identified by the ODN ID, and transmitting the virtual passive optical network creation message to the optical network unit;
- the arrayed waveguide grating is configured to multiplex a wavelength stream in which the optical line terminal and the optical network unit perform bidirectional communication in a downlink direction, and then inject the cyclic arrayed waveguide grating, and in the uplink direction, from the cyclic arrayed waveguide grating
- the wavelength stream is demultiplexed and sent to the optical line terminal;
- the cyclic arrayed waveguide grating for respectively distributing wavelength streams from the at least two arrayed waveguide gratings to the at least two optical splitters in a downlink direction, and the optical line terminals and optical network units in an uplink direction
- the wavelength streams for performing bidirectional communication are respectively allocated to the at least two optical modules;
- the optical splitter is configured to broadcast the wavelength stream injected by the arrayed waveguide grating in a downlink direction, and send the wavelength stream tuned by the optical network unit to the arrayed waveguide grating in an uplink direction;
- the optical network unit is configured to receive a virtual passive optical network creation message sent by the optical line terminal, and establish a ⁇ - 3 ⁇ 4 ⁇ entry according to the VPON ID, the ⁇ -flow ID, the M ID, and the ODN ID.
- the optical line terminal in the virtual passive optical network identified by the VPON ID, the M ID, and the ODN ID reports registration information to establish a communication connection relationship with the optical line terminal, where the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry,
- the ⁇ - 3 ⁇ 4 ⁇ entry includes an optical network unit identifier, the -mv ID, the M ID, and the ODN ID.
- the VPON ID included in the virtual passive optical network creation message identifies a virtual passive optical network composed of a virtual optical line terminal and at least one optical network unit, according to the VPON ID and at least one wavelength.
- a flow identifier which may establish a communication connection relationship with at least one optical network unit in the virtual passive optical network identified by the VPON ID, where the optical network terminal and the optical line terminal therein are virtual, the optical network unit and the optical line terminal Connections are no longer subject to actual physical connections, and they can be flexibly networked according to user needs. Therefore, the method provided by the embodiment of the present invention eliminates complicated networking for different application scenarios, thereby increasing investment cost and complicated operation and maintenance.
- each VPON ID identifier is virtual.
- the source optical network is constructed based on the ⁇ -flow of different attributes identified by the ⁇ - 3 ⁇ 4 ⁇ ID.
- Each ⁇ - 3 ⁇ 4 ⁇ corresponding software mode and transmission rate can be defined by software. Therefore, the VPON can be fully satisfied with residential users.
- Various access scenarios, such as enterprise users and wireless backhaul, can solve the problems brought by the single time division channel to cope with full service access.
- FIG. 1 is a schematic flowchart of a method for virtualizing a passive optical network according to an embodiment of the present invention
- FIG. 2 is a schematic diagram of a virtual passive optical network according to an embodiment of the present invention
- FIG. 3 is a schematic diagram of a virtual passive optical network according to another embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a GEM frame after adding a VPON ID field according to an embodiment of the present invention;
- FIG. 6 is a schematic flowchart of a method for forwarding a downlink service flow in a virtual passive optical network according to another embodiment of the present invention;
- 6-b is a schematic flowchart of a method for an OLT to forward an uplink service flow in a virtual passive optical network according to another embodiment of the present invention
- FIG. 7 is a schematic flowchart of a method for virtualizing a passive optical network according to another embodiment of the present invention
- FIG. 8 is a virtual passive identifier of an optical network unit according to an embodiment of the present invention, which is identified by a VPON ID and a ⁇ - 3 ⁇ 4 ⁇ ID to a VPON ID.
- FIG. 10-a is a schematic flowchart of a method for forwarding a downlink service flow by an ONU in a virtual passive optical network according to another embodiment of the present invention
- FIG. 10-b is a schematic flowchart of a method for an ONU to forward an uplink service flow in a virtual passive optical network according to another embodiment of the present invention
- FIG. 11 is a schematic structural diagram of a device for a virtualized passive optical network according to an embodiment of the present invention
- FIG. 12 is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- FIG. 13-b is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- FIG. 14-a is another schematic embodiment of the present invention
- FIG. 14 is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- FIG. 15 is a schematic diagram of a device for providing a virtualized passive optical network according to another embodiment of the present invention
- FIG. 16 is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- FIG. 17 is a schematic diagram of a virtualized passive optical network according to another embodiment of the present invention
- FIG. 18 is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- FIG. 19 is a schematic diagram of a virtualized passive optical network according to another embodiment of the present invention
- FIG. 20-a is a schematic structural diagram of a device for virtualizing a passive optical network according to another embodiment of the present invention
- FIG. 20-b is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- FIG. 21 is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- -b is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- FIG. 22 is a schematic structural diagram of a device for a virtualized passive optical network according to another embodiment of the present invention
- FIG. 24 is a schematic structural diagram of a passive optical network virtualization system according to an embodiment of the present invention
- FIG. 25 is a schematic diagram of a passive optical network according to another embodiment of the present invention
- FIG. 26 is a schematic structural diagram of a passive optical network virtualization system according to another embodiment of the present invention
- FIG. 27 is a schematic structural diagram of a passive optical network virtualization system according to another embodiment of the present invention.
- FIG. 1 is a schematic flowchart of a method for virtualizing a passive optical network according to an embodiment of the present invention.
- the method illustrated in Fig. 1 mainly includes steps S101 and S102, which are described in detail as follows:
- the virtual passive optical network creation message is from an upper management control module.
- the upper management control module such as a virtual passive optical network controller (VPON Controller)
- VPON Controller can create a virtual passive optical network to create a message through a network standard control interface, such as an openflow interface in a Software Defined Network (SDN).
- the virtual passive optical network creation message includes a virtualized passive optical network IDentifier (VPON ID) and at least one wavelength flow identifier ⁇ - 3 ⁇ 4 ⁇ ID, where the VPON ID is used to identify the virtual optical line.
- VPON ID virtualized passive optical network IDentifier
- a virtual passive optical network consisting of a terminal and at least one optical network unit, and the ⁇ - 3 ⁇ 4 ⁇ ID is used to identify a wavelength stream ( ⁇ - 3 ⁇ 4 ⁇ ), that is, a wavelength stream that identifies two-way communication between the physical OLT and the ONU, each wavelength Streams have their own attributes.
- the so-called virtualized optical line terminal is mainly embodied in the processing capability of the virtual technology to allocate part of the processing power in the optical line terminal pool (Pool), that is, to build a new OLT pool at the central office. Every The processing of the signals sent or received by the ONUs can be completed in a virtual OLT in the OLT pool.
- the VPON architecture consisting of the virtual OLT and the physical ONUs breaks the fixed connection between the OLT and the ONU in the existing PON.
- the connection relationship that is, in the VPON architecture, each ONU does not belong to any OLT entity, and the optical line terminal that is "connected" to the optical network unit in a VPON is not an optical line termination entity, but a VPON identified by the VPON ID.
- the VPON IDi in the virtual passive optical network identified by the VPON IDi, since there is only one virtual optical line terminal (Virtualized OLT), the VPON IDi also identifies the virtual optical line terminal.
- the virtual optical line terminal identified by the VPON IDi and the plurality of optical network units (four optical network units are illustrated in the figure, which are respectively represented by ONU#1, ONU#2, ONU#3, and ONU#4) are used for physical connection.
- the wavelength stream identification 1 ( ⁇ - ⁇ #1), the wavelength stream identifier 2 (-flow#2), the wavelength stream identifier 3 (-flow#3), the wavelength stream identifier 4 ( ⁇ -flowU), and the VPON IDi can be expressed.
- VPON IDi and ⁇ - 3 ⁇ 4 ⁇ #1 represent the connection relationship between ONU#1 and the virtual optical line terminal.
- the virtual passive optical network creation message may include information such as a communication protocol and a transceiver (transmitting/receiving unit in an optical line termination entity) in addition to the above-described VPON ID and ⁇ -B ⁇ ⁇ ⁇ .
- establishing a communication connection relationship with at least one optical network unit in the virtual passive optical network identified by the VPON ID is an optical line terminal passing Negotiation with the optical network unit is completed, that is, the optical line terminal sends the virtual passive optical network creation message received from the upper layer management control module to the optical network unit, and the optical network unit returns necessary information according to its own situation, and then, the optical line The terminal establishes a registration mapping table.
- establishing a communication connection relationship with at least one optical network unit in the virtual passive optical network identified by the VPON ID may include, according to the identifier of the virtual passive optical network to be created and the at least one wavelength flow identifier.
- the optical line terminal sends the virtual passive optical network creation message to the at least one optical network unit, and then receives the registration information of the at least one optical network unit that is registered at the optical line terminal, where the registration information includes the wavelength stream ⁇ - 3 ⁇ 4 ⁇ entry, finally, the optical line terminal is based on the VPON ID And a ⁇ -3 ⁇ 4 ⁇ entry, establishing a first registration mapping table, each entry of the first registration mapping table including the VPON ID and at least one ⁇ - 3 ⁇ 4 ⁇ entry, and between the optical line terminal and the optical network unit
- the interaction can be implemented by the Operation Administration Maintenance (0 AM) message.
- the GP0N system is implemented by transmitting Physical Layer Operation Administration Maintenance (PLOAM) messages, and the EPON and P2P systems are transmitted by Ethernet OAM. Message implementation, and so on.
- PLOAM Physical Layer Operation Administration Maintenance
- a ⁇ - 3 ⁇ 4 ⁇ entry is used to describe the attribute of a corresponding one of the wavelength streams, which mainly includes the wavelength stream identifier ⁇ -flow ID shown in Table 1 below, a protocol type (Protocol), and a chain.
- Link loss, transceiver identification (TRx ID), downstream wavelength (DS_wavelength), upstream wavelength (US_wavelength), downlink maximum transmission rate (DS_MTR), optical network unit identification (ONU ID), and uplink maximum A field such as a transmission rate (US_MTR) may also include an optical network unit serial number (0NU SN ), which is not shown in Table 1.
- the link loss refers to the link loss between the OLT and the ONU
- the DS_MTR and the US_MTR refer to the maximum link transmission rate supported by the OLT and the ONU in the downlink direction and the uplink direction, respectively, under the corresponding link loss.
- DS_MTR and US_MTR can adapt to link loss, that is, the link loss is small, the maximum link transmission rate is large, the maximum link transmission rate with large link loss is small, and the actual maximum link transmission rate can be defined by software.
- the protocol types are GPON
- the ⁇ - 3 ⁇ 4 ⁇ IDs are the wavelength streams of 0002 and 0003 respectively.
- DS_MTR and US_MTR are 2500 Mbps and 1250 Mbps, respectively. With a link loss of 32dB Next, DS_MTR and US_MTR are 622 Mbps and 155 Mbps, respectively.
- ODN SN Optical Distribution Network Serial Number
- the registration list formed by the optical line terminal according to the VPON ID and the ⁇ - 3 ⁇ 4 ⁇ entry is actually a ⁇ - 3 ⁇ 4 ⁇ entry and A superposition of VPON IDs, as shown in Table 2 below:
- the establishment of the first registration mapping table in the example of Table 2 also indicates the completion of the virtual passive optical network, that is, from Table 2, which optical network units constitute the virtual passive optical network part, the wavelength stream identifier, and the corresponding wavelength stream, etc. Wait.
- the ONUs identified as 101 and 111 respectively construct the identification based on the wavelength streams identified as 0001 and 0002 (represented by ⁇ -flow #0001 and ⁇ -flow #0002, respectively).
- the VPON of 100 that is, the ONUs identified as 101 and 111 belong to a virtual OLT (represented by VOLT#l); the ONUs identified as 112 and 121 are based on wavelength streams identified as 0003 and 0004, respectively (using ⁇ - 3 ⁇ 4 ⁇ , respectively) #0003 ⁇ - 3 ⁇ 4 ⁇ #0004 indicates that the VPON with the identifier 200 is constructed, that is, the ONUs identified as 112 and 121 belong to a virtual OLT (represented by VOLT#2); the ONU identified as 201 is based on the identifier 0005.
- the wavelength stream constructs a VPON identified as 300, that is, the ONU identified as 201 belongs to a virtual OLT (represented by VOLT#3), and the virtual passive optical network corresponding to Table 2 is as shown in FIG. Show.
- the ONU entities identified as 101 and 111 correspond to two transceivers having a transceiver identifier (TRx ID) of 001 and 002, that is, two optical line termination entities are physically connected, and the corresponding identifiers are 100 VPON That is, a virtual OLT (VOLT#1), this correspondence relationship can also explain the virtualization method for the passive optical network provided by the embodiment of the present invention.
- connection relationship between the physical OLT and the ONU in the VPON is not limited by the actual physical connection.
- the corresponding VPON or the ONUs in the VPON can be set to different working modes according to different requirements.
- the ONUs identified as 111 and 112 are connected to residential users. Because of their low bandwidth requirements, they can be set to the GPON mode by using the GPON protocol. For the wireless backhaul scenario, it requires a small delay jitter and a large bandwidth requirement. Therefore, the P2P 10GE protocol can be set to the P2P 10GE working mode.
- the ONU of the identifier 121 is for the enterprise access scenario. Security, reliability, and stability are the first considerations.
- TDM Time-Division Multiplexing
- the virtual passive optical network creation message may include an optical module identifier M ID in addition to the identifier VPON ID of the virtual passive optical network to be created and the at least one wavelength stream identifier ⁇ - 3 ⁇ 4 ⁇ ID. And an optical distribution network identifier ODN ID, where the M ID is used to identify an optical module to which the wavelength stream identified by the ⁇ - 3 ⁇ 4 ⁇ ID belongs, and the ODN ID is used to identify an optical distribution network to which the wavelength stream identified by the ID is attached.
- the method includes: transmitting, by the optical line terminal, a virtual passive optical network creation message carrying the M ID, the VPON ID, and the ⁇ -flow ID to the at least one optical network unit; and receiving the information to include the wavelength stream ⁇ - 3 ⁇ 4 ⁇ entry; And describing the VPON ID and the ⁇ -B ⁇ entry, establishing a second registration mapping table, where each entry of the second registration mapping table includes the VPON ID and at least one of the ⁇ - 3 ⁇ 4 ⁇ entries.
- the second registration mapping table in this embodiment is also a superposition of the VPON ID and the at least one ⁇ - 3 ⁇ 4 ⁇ entry, except that, in this embodiment, ⁇ - The 3 ⁇ 4 ⁇ entry contains the ODN ID and M ID.
- the GPON system is implemented by transmitting PLO AM messages
- EPON and P2P systems are implemented by transmitting Ethernet OAM messages, and so on.
- the passive optical network formed by the ONU and the OLT entity is virtualized, and the network topology composed of the ONU and the OLT entity is The ONU is no longer only fixedly connected to one OLT entity. Therefore, the bandwidth and hardware resources of the PON ports are no longer independent of each other, and the scheduling can be performed across the PON ports, thereby realizing resource sharing between the PON ports.
- the ultimate purpose of the OLT to establish a communication connection relationship with the optical network unit in the virtual passive optical network is to enable forwarding of the upstream service flow and the downlink service flow.
- the network unit further includes an OLT forwarding downlink service flow method as illustrated in FIG. 4-a and an OLT forwarding uplink service flow method as illustrated in FIG. 4-b.
- S401 Receive an Ethernet frame, for example, receive an Ethernet frame that enters a virtual MAC module from an Ethernet port, where the Ethernet frame carries a first virtual local area network identifier.
- VLAN IDi the first virtual local area network identifier by VLAN IDi.
- the entry of the first virtual passive optical network mapping table includes a virtual local area network ID (VLAN ID) and a VPON ID and a transceiver identifier (TRx ID) corresponding to the VLAN ID.
- VLAN ID virtual local area network ID
- TRx ID transceiver identifier
- the first virtual passive optical network mapping table of the example in Table 3 contains an Ethernet port (ETH PORT ), a virtual local area network identifier (VLAN ID), a virtual passive optical network identifier (VPON ID), and a transceiver identifier. (Trx ID) and GPON Encapsulation Method (GEM) port (PORT), etc., the first virtual passive optical network mapping table can be manually configured or automatically configured.
- the process proceeds to S404. Otherwise, the flow goes to S405.
- the first virtual passive optical network mapping table exemplified in Table 3 the VLAN ID also corresponds to the TRx ID. Therefore, it can also be found by querying the first virtual passive optical network mapping table in Table 3 to exist with the VLAN IDi.
- the corresponding VPON IDi and the first transceiver identifier (the following description indicates the first transceiver identifier by TRx IDi), if yes, the flow proceeds to S404.
- the P0N port corresponding to the first transceiver identifier is sent to the optical network unit, and the frame header of the GEM frame includes the VPON IDi.
- the Ethernet frame is encapsulated into a GEM frame and sent to the optical network unit through the corresponding PON port.
- This process is also a process of encapsulating the original Ethernet frame into a GEM frame according to the GEM PORT of the example in Table 3.
- a field is extended in the frame header of the encapsulated GEM frame for adding the VPON ID. Since the extended field is 8 bits long, it can support 256 VPONs.
- the structure of the added VEM ID field that is, the extended GEM frame is as shown in FIG. 5.
- the method for forwarding the uplink service flow by the OLT as illustrated in Figure 4-b includes:
- the GEM frame carries a second virtual passive optical network identifier.
- the second virtual passive optical network identifier is denoted by VPON ID2 below.
- the entry of the first virtual passive optical network mapping table includes a virtual local area network identifier VLAN ID and a VPON ID and a transceiver identifier TRx ID corresponding to the VLAN ID, as shown in Table 3.
- the flow proceeds to S, 404.
- the second virtual local area network identifier (hereinafter referred to as the second virtual local area network identifier by VLAN ID2)
- the VPON ID2 is queried in the first virtual passive optical network mapping table exemplified in Table 3, or the VPON ID2 corresponding to the VLAN ID2 is queried in the first virtual passive optical network mapping table exemplified in Table 3 TRx ID2, then decapsulate the GEM frame. After decapsulation, the Ethernet frame can be sent from the Ethernet port corresponding to VLAN ID2 according to the first virtual passive optical network mapping table shown in Table 3.
- the method further includes an OLT forwarding downlink service flow method as illustrated in FIG. 6-a and an OLT forwarding uplink service flow method as illustrated in FIG. 6-b.
- the method for forwarding the downlink service flow by the OLT illustrated in FIG. 6-a which includes:
- S601 receiving an Ethernet frame.
- an Ethernet frame entering the virtual MAC module from the Ethernet port is received, the Ethernet frame carrying a third virtual local area network identifier.
- the third virtual local area network identifier is represented by VLAN ID3 below.
- the entry of the second virtual passive optical network mapping table includes a virtual local area network identifier VLAN ID, a VPON ID corresponding to the VLAN ID, a transceiver identifier TRx ID, and an M ID ⁇ V ODN ID, and at least includes a VLAN ID, a VPON ID corresponding to the VLAN ID, and a TRx ID.
- VLAN ID virtual local area network identifier
- VPON ID corresponding to the VLAN ID
- TRx ID a virtual local area network identifier
- M ID ⁇ V ODN ID M ID ⁇ V ODN ID
- the entries of the second virtual passive optical network mapping table need not be included in the MID; if the optical modules identified by different M IDs include the same TRx ID transceiver, The M ID and TRx ID uniquely identify a transceiver.
- the entries of the second virtual passive optical network mapping table need not include the ODN ID. If the ODNs of different ODN IDs include the same identified ONU, the ODN ID and the ONU are required. The identifier uniquely identifies an ONU.
- the second virtual passive optical network mapping table can be manually configured or automatically configured.
- S603. Determine whether there is a virtual passive optical network identifier and a third transceiver identifier corresponding to the third virtual local area network identifier.
- the query may also be performed.
- the VPON ID3, the optical module identifier 3 (M ID3), the optical distribution network identifier 3 (ODN ID3), and the TRx ID3 corresponding to the VLAN ID3 are present in the virtual passive optical network mapping table. If yes, the process proceeds to S604.
- the PON port corresponding to the third transceiver identifier is sent to the optical network unit, and the frame header of the GEM frame includes the third virtual passive optical network identifier.
- the Ethernet frame is encapsulated into a GEM frame and sent to the optical network unit through the PON port corresponding to the TRx ID3, and the process is also based on the second virtual passive optical network.
- a field is extended in the frame header of the encapsulated GEM frame for adding the VPON ID. Since the extended field length is 8 bits, 256 VPONs can be supported.
- the structure in which the VPON ID field, that is, the extended GEM frame is added, is as shown in FIG. 5.
- the method for forwarding the uplink service flow by the OLT illustrated in Figure 6-b includes:
- the GEM frame that enters the virtual MAC module from the PON port is received, and the GEM frame carries the fourth virtual passive optical network identifier.
- the following description represents the fourth virtual passive optical network identity with VPON ID4.
- the entry of the second virtual passive optical network mapping table includes a virtual local area network identifier VLAN ID, a VPON ID corresponding to the VLAN ID, a transceiver identifier TRx ID, a ⁇ ⁇ ⁇ , a ⁇ ID, and at least a VLAN ID, and a location
- the VPON ID and TRx ID corresponding to the VLAN ID can be manually configured or automatically configured.
- the identifier 4 (VPON ID4), the optical module identifier 4 (M ID4), the optical distribution network identifier 4 (ODN ID4), and the fourth transceiver identifier (TRx ID4) decapsulate the GEM frame.
- the VPON ID included in the network creation message identifies a virtual passive optical network composed of a virtual optical line terminal and at least one optical network unit, and the VPON ID and the at least one wavelength flow identifier may be virtual with the VPON ID identifier.
- At least one optical network unit in the passive optical network establishes a communication connection relationship. Since the passive optical network and the optical line terminal therein are virtual, the connection between the optical network unit and the optical line terminal is no longer subject to the actual physical connection, and Flexible networking based on user needs. Therefore, the method provided by the embodiment of the present invention eliminates complicated networking for different application scenarios, thereby increasing investment cost and complicated operation and maintenance. On the other hand, each VPON ID identifier is virtual.
- the source optical network is constructed based on ⁇ - 3 ⁇ 4 ⁇ of different attributes identified by ⁇ - 3 ⁇ 4 ⁇ ID.
- the working mode and transmission rate of each ⁇ -flow can be defined by software. Therefore, the VPON can be fully satisfied with residential users.
- Various access scenarios, such as enterprise users and wireless backhaul, can solve the problems brought by the single time division channel to cope with full service access.
- FIG. 7 is a schematic flowchart of a method for virtualizing a passive optical network according to another embodiment of the present invention.
- the method illustrated in Fig. 7 mainly includes step S701 and step S702, which are described in detail as follows:
- the optical network unit receives the delivered virtual passive optical network creation message.
- the virtual passive optical network creation message is delivered by the optical line terminal in the virtual passive optical network, and the content included in the virtual passive optical network creation message provided by the foregoing embodiment includes the same content, for example, And an identifier VPON ID of the virtual passive optical network to be created and at least one wavelength stream identifier ⁇ - 3 ⁇ 4 ⁇ ID.
- the optical network unit establishes a ⁇ - 3 ⁇ 4 ⁇ entry according to the VPON ID and the ⁇ - 3 ⁇ 4 ⁇ ID, and reports the registration information to the optical line terminal in the virtual passive optical network identified by the VPON ID to establish a communication connection relationship with the optical line terminal.
- the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry, where the ⁇ - 3 ⁇ 4 ⁇ entry includes an optical network unit identifier and the ⁇ - 3 ⁇ 4 ⁇ ID.
- the optical network unit establishes a ⁇ - 3 ⁇ 4 ⁇ entry according to the VPON ID and the ⁇ - 3 ⁇ 4 ⁇ ID, and reports the registration information to the optical line terminal in the virtual passive optical network identified by the VPON ID to establish the optical line with the optical line.
- the communication connection relationship of the terminal includes: obtaining, by testing, a link loss between the optical network unit and the optical line terminal, an uplink maximum transmission rate and a downlink maximum transmission rate corresponding to the link loss; The uplink maximum transmission rate and the downlink maximum transmission rate corresponding to the link loss are added to the wavelength stream ⁇ -?.
- the ⁇ entry is reported as registration information to the optical line terminal. Specific As shown in FIG. 8, the process includes steps S801 to S811, which are described in detail as follows:
- the correspondence table of the receiving wavelength and the transmitting wavelength may be established when the optical network unit is shipped.
- the reception wavelength is selected according to a certain rule
- the transmission wavelength is selected based on the correspondence table of the reception wavelength and the transmission wavelength.
- the optical network unit adds the link loss obtained by the test, the uplink maximum transmission rate and the downlink maximum transmission rate corresponding to the link loss, to the wavelength stream ⁇ - 3 ⁇ 4 ⁇ entry, and reports the registration information to the optical line terminal. .
- the switching of the VPON means that the object registered by the optical network unit is to be changed. Therefore, when judging that the optical network unit is not factory-set, it should be further determined whether the VPON is switched, and whether the VPON ID is changed can be determined by determining whether the VPON ID has changed. If the VPON ID has changed, the flow goes to S808, otherwise, the flow goes to S811.
- the optical network unit can be registered in the switched VPON according to the set working mode and wavelength.
- the ⁇ - 3 ⁇ 4 ⁇ entry illustrated in FIG. 7 or FIG. 8 includes ⁇ - 3 ⁇ 4 ⁇ ⁇ , or the ⁇ - 3 ⁇ 4 ⁇ entry includes ⁇ - 3 ⁇ 4 ⁇ ID, optical module identification M ID, and optical distribution network identifier ODN ID.
- the M ID is used to identify the optical module to which the wavelength stream identified by the ⁇ - 3 ⁇ 4 ⁇ ID is attached, and the ODN ID is used to identify the optical distribution network to which the wavelength stream identified by the ⁇ - 3 ⁇ 4 ⁇ ID belongs.
- the specific field is as in the foregoing embodiment. Or Table 1 of the foregoing embodiment.
- the virtual passive optical network creation message includes an embodiment in which the VPON ID and the at least one ⁇ -B ⁇ ID and the ⁇ - ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ The VPON ID and the ⁇ - 3 ⁇ 4 ⁇ ID are registered with the optical line terminal in the virtual passive optical network identified by the VPON ID to establish a communication connection relationship with the optical line terminal, and further include ONU forwarding as illustrated in FIG. 9-a.
- the downlink traffic flow method and the ONU as illustrated in Figure 9-b forward the upstream traffic flow method.
- the ONU forwards the downlink service flow method in the example of FIG. 9-a, which includes:
- the GEM frame that enters the virtual MAC module from the PON port is received, and the GEM frame carries the fifth virtual passive optical network identifier.
- the fifth virtual passive optical network identifier is indicated by VPON ID5.
- S902 Query a third virtual passive optical network mapping table according to the fifth virtual passive optical network identifier.
- the entry of the third virtual passive optical network mapping table includes a VPON ID and a GEM port identifier corresponding to the VPON ID, an Ethernet port identifier, and a virtual local area network identifier VLAN ID, as shown in Table 4 below:
- the GEM frame is decapsulated.
- the method for forwarding an uplink service flow by the ONU in the example of FIG. 9-b includes:
- the third virtual passive optical network mapping table is the same as the third virtual passive optical network mapping table illustrated in Fig. 9-a, as exemplified in Table 4 above.
- the optical network identifier is encapsulated into a GEM frame and then sent to the optical line terminal through the PON interface, where the frame header of the GEM frame includes the VPON ID6. Specifically, when the Ethernet frame is encapsulated into a GEM frame, a field is extended in the frame header of the encapsulated GEM frame for adding the VPON ID6.
- the optical network unit according to the VPON ⁇ -flow ID after registering with the optical line terminal in the virtual passive optical network identified by the VPON ID to establish a communication connection relationship with the optical line terminal, further comprising the method for forwarding the downlink service flow by the ONU as illustrated in FIG. 10-a And the ONU as illustrated in Figure 10-b forwards the upstream traffic flow method.
- the method for forwarding the downlink service flow by the ONU in the example of FIG. 10-a is as follows:
- the GEM frame that enters the virtual MAC module from the PON port is received, and the GEM frame carries the seventh virtual passive optical network identifier.
- the following description indicates the seventh virtual passive optical network identifier by VPON ID 7.
- the entry of the fourth virtual passive optical network mapping table includes a VPON ID and a GEM port identifier, an ODN ID, an Ethernet port identifier, and/or a virtual local area network identifier VLAN ID corresponding to the VPON ID, and includes at least a VPON ID and The GEM port identifier, Ethernet port identifier, and VLAN ID corresponding to the VPON ID. It should be noted that, if the identifiers of all the ONUs are different, the entries of the fourth virtual passive optical network mapping table need not include the ODN ID. If the ODNs of different ODN IDs include the same identified ONU, the ODN ID is required. And the identity of the ONU to uniquely identify an ONU.
- the fourth virtual passive optical network mapping table can be manually configured or automatically configured.
- the GEM frame is decapsulated.
- the entry of the fourth virtual passive optical network mapping table includes a VLAN ID and a VPON ID and an ODN ID corresponding to the VLAN ID
- the fourth virtual passive optical network may also be queried. Whether there is a VPON ID7 optical distribution network identifier 7 (ODN ID7) corresponding to the seventh virtual local area network identifier (VLAN ID?) in the mapping table, and if so, decapsulating the GEM frame.
- the method for forwarding an uplink service flow by the ONU illustrated in Figure 10-b includes:
- Ethernet frames For example, an Ethernet frame that enters a virtual MAC module from an Ethernet port is received, the Ethernet frame carrying an eighth virtual local area network identifier.
- the eighth virtual local area network identifier For convenience of explanation, the following description indicates the eighth virtual local area network identifier by VLAN IDs.
- S1002 Query the fourth virtual passive optical network mapping table according to the eighth virtual local area network identifier.
- the GEM port identifier, the ODN ID, the Ethernet port identifier, and/or the virtual local area network identifier VLAN ID corresponding to the VPON ID, and at least the VPON ID and the GEM port corresponding to the VPON ID ID, Ethernet port ID, and VLAN ID.
- the Ethernet frame is encapsulated into a GEM. After the frame is sent to the optical line terminal through the PON port, the frame header of the GEM frame includes the eighth virtual local area network identifier.
- the VPON IDs and the optical distribution network identifiers 8 (ODN IDs) corresponding to the Ethernet port identifiers may be queried in the fourth virtual passive optical network mapping table, and if yes, the After the Ethernet frame is encapsulated into a GEM frame, it is sent to the virtual optical line terminal through the PON port, and the frame header of the GEM frame includes the VPON IDs. Specifically, when the Ethernet frame is encapsulated into a GEM frame, a field is extended in the frame header of the encapsulated GEM frame for adding VPON IDs.
- FIG. 11 is a schematic structural diagram of a device for a virtualized passive optical network according to an embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
- the apparatus of the virtualized passive optical network illustrated in Fig. 11 includes a message receiving module 1101 and a communication connection establishing module 1102, in which:
- the message receiving module 1101 is configured to receive a virtual passive optical network creation message, where the virtual passive optical network creation message includes an identifier VPON ID of the virtual passive optical network to be created and at least one wavelength flow identifier ID, where the VPON ID is For identifying a virtual passive optical network composed of a virtual optical line terminal and the at least one optical network unit, where the ⁇ - 3 ⁇ 4 ⁇ ID is used to identify a wavelength stream;
- the communication connection establishing module 1102 is configured to establish a communication connection relationship between the VPON ID included in the virtual passive optical network creation message and the at least one optical network unit in the virtual passive optical network identified by the VPON ID.
- each functional module is merely an example, and the actual application may be considered according to requirements, such as configuration requirements of corresponding hardware or convenience of implementation of software.
- the above function distribution is completed by different functional modules, that is, the internal structure of the device of the virtualized passive optical network is divided into different functional modules to complete all or part of the functions described above.
- the corresponding functional modules in this embodiment may be implemented by corresponding hardware, or may be executed by corresponding hardware.
- the foregoing message receiving module may have the foregoing receiving upper layer.
- the hardware of the source optical network to create a message may also be a general processor or other hardware device capable of executing a corresponding computer program to perform the foregoing functions; and the communication connection establishing module as described above may have the basis for performing the foregoing
- the virtual passive optical network creation message includes a VPON ID and at least one ⁇ - 3 ⁇ 4 ⁇ ID, a hardware that establishes a communication connection relationship with at least one optical network unit in the virtual passive optical network identified by the VPON ID, such as a communication connection establisher. It can also be a general processor or other hardware device capable of executing a corresponding computer program to perform the aforementioned functions (the various embodiments provided in this specification can apply the above described principles).
- the communication connection establishing module 1102 illustrated in FIG. 11 may include a first transmitting unit 1201, a first receiving unit 1202, and a first establishing unit 1203, as shown in FIG. 12, a virtualized passive optical network according to another embodiment of the present invention.
- Device where:
- the first sending unit 1201 is configured to send a virtual passive optical network creation message to the at least one optical network terminal unit;
- the first receiving unit 1202 is configured to receive, by the at least one optical network unit, registration information that is registered at the optical line terminal, where the registration information includes a wavelength stream ⁇ - 3 ⁇ 4 ⁇ entry, where the ⁇ - 3 ⁇ 4 ⁇ entry includes light a network unit identifier and the ⁇ - 3 ⁇ 4 ⁇ ID;
- the first establishing unit 1203 is configured to establish a first registration mapping table according to the VPON ID and the ⁇ - 3 ⁇ 4 ⁇ entry, where the first registration mapping table includes the VPON ID and at least one of the ⁇ - 3 ⁇ 4 ⁇ entries.
- the device of the virtualized passive optical network illustrated in FIG. 11 or FIG. 12 further includes a first receiving module 1301, a first query module 1302 and a first forwarding module 1303, as shown in FIG. 13-a or FIG. 13-b.
- the device for virtualizing a passive optical network according to another embodiment of the present invention, the first receiving module 1301, the first querying module 1302, and the first forwarding module 1303 are configured to forward the downlink service flow, where:
- the first receiving module 1301 is configured to receive an Ethernet frame, where the Ethernet frame carries a first virtual local area network identifier
- the first query module 1302 is configured to query the first virtual passive optical network mapping table according to the first virtual local area network identifier, where the entry of the first virtual passive optical network mapping table includes a virtual local area network identifier VLAN ID and The VPON ID and the transceiver identifier TRx ID corresponding to the VLAN ID are as shown in Table 3;
- the first forwarding module 1303 is configured to: if the first query module 1302 queries the first virtual local area
- the first virtual passive optical network identifier (VPON IDi) corresponding to the network identifier (VLAN IDi) encapsulates the Ethernet frame into a GEM frame and then passes the PON port corresponding to the first transceiver identifier (TRx IDi) to the light.
- the network unit sends, the frame header of the GEM frame includes the VPON IDi.
- the first virtual passive optical network mapping table exemplified in Table 3 the VLAN ID also corresponds to the TRx ID, therefore, the first query module 1302 can also query the first virtual passive optical network mapping table exemplified in Table 3.
- the VPON IDi and the TRx IDi corresponding to the VLAN IDi are present. If yes, the first forwarding module 1303 encapsulates the Ethernet frame into a GEM frame and then sends the packet to the optical network unit through the corresponding PON port.
- the device of the virtualized passive optical network illustrated in FIG. 11 or FIG. 12 further includes a second receiving module 1401, a second query module 1402, and a first decapsulation module 1403, as shown in FIG. 14-a or FIG. 14-b.
- An apparatus for virtualizing a passive optical network according to another embodiment of the present invention is shown, wherein:
- a second receiving module 1401 configured to receive a GEM frame, where the GEM frame carries a second virtual passive optical network identifier (VPON ID2);
- the second query module 1402 is configured to query, according to the second virtual passive optical network identifier (VPON ID2) carried in the GEM frame, a first virtual passive optical network mapping table, where the first virtual passive optical network mapping table is The entry includes a virtual local area network identifier VLAN ID and a VPON ID and a transceiver identifier TRx ID corresponding to the VLAN ID, as shown in Table 3;
- the first decapsulation module 1403 is configured to decapsulate the GEM frame if the second virtual passive optical network identifier is queried in the first virtual passive optical network mapping table.
- the second query module 1402 can also query the first virtual passive light exemplified in Table 3.
- the VPON ID2 and the second transceiver identifier (TRx ID2) corresponding to the second virtual local area network identifier (VLAN ID2) are present in the network mapping table. If yes, the first decapsulation module 1403 decapsulates the GEM frame.
- the virtual passive optical network creation message includes the identification VPON ID of the virtual passive optical network to be created and the at least one wavelength flow identifier ⁇ -flow ID, And an optical module identifier M ID and an optical distribution network identifier ODN ID, where the M ID is used to identify an optical module to which the wavelength stream identified by the ⁇ - 3 ⁇ 4 ⁇ ID is attached, and the ODN ID is used to identify the wavelength stream to which the ⁇ - 3 ⁇ 4 ⁇ ID identifier belongs.
- the optical distribution network, the communication connection establishing module illustrated in FIG. 11 may include a second transmitting unit 1501, a second receiving unit 1502, and a second establishing unit 1503, as shown in FIG.
- Another embodiment provides a device for virtualizing a passive optical network, wherein:
- a second sending unit 1501 configured to send the virtual passive optical network creation message carrying the M ID to the at least one optical network unit;
- the second receiving unit 1502 is configured to receive, by the at least one optical network unit, registration information that is registered at the virtual optical line terminal, where the registration information includes a wavelength stream ⁇ - 3 ⁇ 4 ⁇ entry, the ⁇ - 3 ⁇ 4 ⁇ table
- the item includes the ODN ID and the M ID;
- a second establishing unit 1503 configured to establish a second registration mapping table according to the VPON ID and the ⁇ -B ⁇ entry, where each entry of the second registration mapping table includes the VPON ID and at least one The ⁇ -? ⁇ entry.
- the virtual passive optical network creation message includes the identification VPON ID of the virtual passive optical network to be created and the at least one wavelength flow identifier ⁇ -flow ID, And an optical module identifier M ID and an optical distribution network identifier ODN ID, where the M ID is used to identify an optical module to which the wavelength stream identified by the ⁇ - 3 ⁇ 4 ⁇ ID is attached, and the ODN ID is used to identify the wavelength stream to which the ⁇ - 3 ⁇ 4 ⁇ ID identifier belongs.
- the optical distribution network, the apparatus for virtualizing the passive optical network illustrated in FIG. 11 may further include a third receiving module 1601, a third query module 1602, and a second forwarding module 1603, as shown in FIG.
- An example of a virtualized passive optical network device wherein:
- the third receiving module 1601 is configured to receive an Ethernet frame, where the Ethernet frame carries a third virtual local area network identifier (VLAN ID3);
- the third query module 1602 is configured to query the second virtual passive optical network mapping table according to the third virtual local area network identifier carried in the Ethernet frame, where the entry of the second virtual passive optical network mapping table includes a virtual local area network identifier a VLAN ID, a VPON ID corresponding to the VLAN ID, a transceiver identifier TRx ID, a M ID ⁇ V ODN ID, and at least a VLAN ID, a VPON ID and a TRx ID corresponding to the VLAN ID;
- the second forwarding module 1603 is configured to: if the third virtual passive optical network identifier (VPON ID3) and the third transceiver identifier (TRx ID3) corresponding to the third virtual local area network identifier are queried, the Ethernet is After the frame is encapsulated into a GEM frame, it is sent to the optical network unit through the PON port corresponding to the TRx ID3. It should be noted that, because the entry of the second virtual passive optical network mapping table includes a VLAN ID and a VPON ID, an M ID, an ODN ID, and a TRx ID corresponding to the VLAN ID, the third query is performed.
- the module 1602 can also query whether the third virtual passive optical network identifier (VPON ID3) and the optical module identifier 3 (M_M) corresponding to the third virtual local area network identifier 3 (VLAN ID3) exist in the second virtual passive optical network mapping table. ID3), optical distribution network identifier 3 (ODN ID3) and third transceiver identifier (TRx IDs), if present, the second forwarding module 1603 encapsulates the Ethernet frame into a GEM frame and then passes the PON port corresponding to the TRx IDs. The optical network unit sends.
- VPON ID3 third virtual passive optical network identifier
- M_M optical module identifier 3
- TRx IDs third transceiver identifier
- the virtual passive optical network creation message includes the identification VPON ID of the virtual passive optical network to be created and the at least one wavelength flow identifier ⁇ -flow ID, And an optical module identifier M ID and an optical distribution network identifier ODN ID, where the M ID is used to identify an optical module to which the wavelength stream identified by the ⁇ - 3 ⁇ 4 ⁇ ID is attached, and the ODN ID is used to identify the wavelength stream to which the ⁇ - 3 ⁇ 4 ⁇ ID identifier belongs.
- the optical distribution network, the device for virtualizing the passive optical network illustrated in FIG. 11 may further include a fourth receiving module 1701, a fourth query module 1702, and a second decapsulation module 1703, as shown in FIG.
- An apparatus for virtualizing a passive optical network provided by an embodiment, wherein:
- a fourth receiving module 1701 configured to receive a GEM frame, where the GEM frame carries a fourth virtual passive optical network identifier (VPON ID4);
- the fourth query module 1702 is configured to query, according to the fourth virtual passive optical network identifier carried in the GEM frame, a second virtual passive optical network mapping table, where the entries of the second virtual passive optical network mapping table include virtual The local area network identifier VLAN ID, the VPON ID corresponding to the VLAN ID, the transceiver identifier TRx ID, the M ID ⁇ V ODN ID, and at least includes a VLAN ID, a VPON ID and a TRx ID corresponding to the VLAN ID;
- the second decapsulation module 1703 is configured to decapsulate the GEM frame if the fourth virtual passive optical network identifier is queried in the second virtual passive optical network mapping table. Similar to the foregoing example of FIG. 17, the fourth query module 1702 can also query whether the VPON ID4, the optical module identifier 4 (MID4), and the optical distribution network identifier 4 (ODN ID4) exist in the second virtual passive optical network mapping table. And a fourth transceiver identifier (TRx ID4), if present, the second decapsulation module 1703 decapsulates the GEM frame.
- VPON ID4 the optical module identifier 4
- ODN ID4 optical distribution network identifier 4
- TRx ID4 fourth transceiver identifier
- FIG. 18 is a schematic structural diagram of an apparatus for virtualizing a passive optical network according to another embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
- the device of the virtualized passive optical network illustrated in FIG. 18 may be the optical network in the VPON provided by the embodiment of the present invention.
- the message receiving module 1801 is configured to receive the delivered virtual passive optical network creation message, where the virtual passive optical network creation message includes an identifier VPON ID of the virtual passive optical network to be created and at least one wavelength flow identifier ⁇ - 3 ⁇ 4 ⁇ ID;
- the registration module 1802 is configured to report registration information to the optical line terminal in the virtual passive optical network identified by the VPON ID according to the set of (?10 and -?10)-
- the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry, and the ⁇ - 3 ⁇ 4 ⁇ entry includes an optical network unit identifier and the ID.
- the registration module of the example of FIG. 18 may include an obtaining unit 1901 and a reporting unit 1902, such as the device for virtualizing a passive optical network according to another embodiment of the present invention, as shown in FIG.
- the obtaining unit 1901 is configured to obtain, by using a test, a link loss between the optical network unit and the optical line terminal, an uplink maximum transmission rate and a downlink maximum transmission rate corresponding to the link loss, and a reporting unit 1902, configured to: The link loss, the uplink maximum transmission rate and the downlink maximum transmission rate corresponding to the link loss are added to the wavelength stream ⁇ - 3 ⁇ 4 ⁇ entry as registration information and reported to the optical line terminal.
- the device of the virtualized passive optical network illustrated in FIG. 18 or FIG. 19 may further include a fifth receiving module 2001, a fifth query module 2002, and a third decapsulation module 2003, as shown in FIG. 20-a or FIG. 20-
- the device for virtualizing a passive optical network according to another embodiment of the present invention, wherein:
- a fifth receiving module 2001 configured to receive a GEM frame, where the GEM frame carries a fifth virtual passive optical network identifier (VPON ID5);
- the fifth query module 2002 is configured to query a third virtual passive optical network mapping table according to the fifth virtual passive optical network identifier carried in the GEM frame, where the entry of the third virtual passive optical network mapping table includes a VPON An ID, a GEM port identifier corresponding to the VPON ID, an Ethernet port identifier, and a virtual local area network identifier VLAN ID;
- the third decapsulation module 2003 is configured to decapsulate the GEM frame if the fifth virtual passive optical network identifier is queried in the third virtual passive optical network mapping table.
- the ⁇ - 3 ⁇ 4 ⁇ entry includes the ⁇ - 3 ⁇ 4 ⁇ ID
- the apparatus of the virtualized passive optical network illustrated in FIG. 18 or FIG. 19 may further include a sixth receiving module 2101, a sixth querying module 2102, and a third forwarding module 2103, as shown in FIG. 21-a or FIG. 21-b.
- An apparatus for virtualizing a passive optical network according to another embodiment of the present invention is shown, wherein:
- the sixth receiving module 2101 is configured to receive an Ethernet frame, where the Ethernet frame carries a sixth virtual local area network identifier (VLAN ID6).
- VLAN ID6 virtual local area network identifier
- the sixth query module 2102 is configured to query a third virtual passive optical network mapping table according to the sixth virtual local area network identifier carried in the Ethernet frame, where the entry of the third virtual passive optical network mapping table includes a VPON ID and The GEM port identifier, the Ethernet port identifier, and the virtual local area network identifier VLAN ID corresponding to the VPON ID.
- the third forwarding module 2103 is configured to: if the sixth virtual passive optical network identifier (VPON ID6) corresponding to the sixth virtual local area network identifier is queried in the third virtual passive optical network mapping table, After the Ethernet frame is added and encapsulated into a GEM frame, it is sent to the optical line terminal through the PON port, and the frame header of the GEM frame includes the VPON ID6. Specifically, when the Ethernet frame is encapsulated into a GEM frame, a field is extended in the frame header of the encapsulated GEM frame for adding the VPON ID6.
- the ⁇ -B ⁇ 4 ⁇ entry may include, in addition to the optical module identifier M ID and the optical distribution network identifier ODN ID, where the M ID is used to identify the location.
- the device includes a seventh receiving module 2201, a seventh querying module 2202, and a fourth decapsulating module 2203.
- the device for virtualizing a passive optical network according to another embodiment of the present invention is as shown in FIG.
- the seventh receiving module 2201 is configured to receive a GEM frame, where the GEM frame carries a seventh virtual passive optical network identifier (VPON ID7);
- the seventh query module 2202 is configured to query, according to the seventh virtual passive optical network identifier carried in the GEM frame, a fourth virtual passive optical network mapping table, where the entries of the fourth virtual passive optical network mapping table include VPON.
- VLAN ID virtual local area network identifier
- the ODN ID is included. If the ODN of the different ODN IDs contains the same identified ONU, the ODN ID and the ID of the ONU are required to uniquely identify an ONU.
- the fourth virtual passive optical network mapping table may be manually configured
- the fourth decapsulation module 2203 is configured to decapsulate the GEM frame if the seventh virtual passive optical network identifier is queried in the fourth virtual passive optical network mapping table.
- the ⁇ -B ⁇ 4 ⁇ entry may include, in addition to the optical module identifier M ID and the optical distribution network identifier ODN ID, where the M ID is used to identify the location.
- the eighth receiving module 2301 is configured to receive an Ethernet frame, where the Ethernet frame carries an eighth virtual local area network identifier (VLAN ID8).
- VLAN ID8 virtual local area network identifier
- the eighth query module 2302 is configured to query the fourth virtual passive optical network mapping table according to the eighth virtual local area network identifier carried in the Ethernet frame, where the entry of the fourth virtual passive optical network mapping table includes a VPON ID and a GEM port identifier, an ODN ID, an Ethernet port identifier, and/or a virtual local area network identifier VLAN ID corresponding to the VPON ID, and including at least a VPON ID and a GEM port identifier, an Ethernet port identifier, and a VLAN corresponding to the VPON ID. ID;
- the fourth forwarding module 2303 is configured to: when the fourth virtual passive optical network mapping table is queried, query the eighth virtual passive optical network identifier (VPON IDs) and the optical distribution network identifier corresponding to the eighth virtual local area network identifier.
- the ODN IDs are sent to the virtual optical line terminal through the PON port by adding the Ethernet frame to the VPON IDs.
- the seventh query module 2301 may also query the fourth.
- the fourth forwarding module 2302 After the VEM IDs are added to the GEM frame, the GPON IDs are sent to the virtual optical line terminal through the corresponding PON port.
- FIG. 24 it is a schematic structural diagram of a passive optical network virtualization system according to an embodiment of the present invention.
- the passive optical network virtualization system illustrated in FIG. 24 includes an upper layer management control module 2401, at least one optical line terminal 2402, an arrayed waveguide grating 2403, an optical splitter 2404, and at least one optical network unit 2405, wherein the optical line terminal 2402
- An apparatus for implementing the virtualized passive optical network provided by any of the embodiments of FIG. 11 to FIG. 14 which may include the apparatus for virtualizing a passive optical network provided by any of the embodiments of FIG. 11 to FIG.
- the optical network unit 2405 may be an optical network unit provided by any one of the embodiments of FIG. 18 to FIG. 21, and the arrayed waveguide grating 2403 is optically connected to the optical line terminal 2402 and the optical splitter 2404, respectively.
- the splitter 2404 and the optical network unit 2405 are connected by optical fibers, wherein:
- the upper management control module 2401 is configured to create a virtual passive optical network, and send a virtual passive optical network creation message to the optical line terminal 2402, where the virtual passive optical network creation message includes an identifier of the virtual passive optical network to be created.
- the virtual passive optical network creation message includes an identifier of the virtual passive optical network to be created.
- a VPON ID and at least one wavelength stream identification ID the VPON ID being used to identify a virtual passive optical network composed of a virtual optical line terminal and the at least one optical network unit 2405, the ⁇ - 3 ⁇ 4 ⁇ ID being used to identify the optical line
- the terminal 2402 and the optical network unit 2405 perform wavelength flow of bidirectional communication;
- the optical line terminal 2402 is configured to receive a virtual passive optical network creation message sent by the upper management control module 2401, according to the virtual passive optical network identified by the VPON ID, according to the method and the at least one The at least one optical network unit 2405 establishes a communication connection relationship, and sends the virtual passive optical network creation message to the optical network unit 2405;
- the arrayed waveguide grating 2403 is configured to multiplex the wavelength stream in which the optical line terminal 2402 and the optical network unit 2405 perform bidirectional communication in the downlink direction, and then inject the optical splitter 2404 into the optical splitter 2402 and the optical network unit 2405 in the uplink direction.
- the wavelength stream of the communication is demultiplexed and sent to the optical line terminal 2402;
- the optical splitter 2404 is configured to broadcast the wavelength stream injected by the arrayed waveguide grating 2403 in the downlink direction, and send the wavelength stream tuned by the optical network unit 2405 to the arrayed waveguide grating 2403 in the uplink direction; the optical network unit 2405 is configured to Receiving a virtual passive optical network creation message sent by the optical line terminal 2402, establishing a ⁇ - 3 ⁇ 4 ⁇ entry according to the VPON ⁇ -flow ID, and an optical line terminal 2402 in the virtual passive optical network identified by the VPON ID Up to 3 ⁇ 4 registration information to establish a communication connection relationship with the optical line terminal 2402, the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry, and the ⁇ - 3 ⁇ 4 ⁇ entry includes an optical network unit identifier And the ID.
- the optical line terminal 2402 entity may be identified by its transceiver (TRansceiver, TRx), that is, the optical line terminal 2402 corresponds to the transceiver, and each transceiver Corresponding to a MAC module, forming a PON port.
- TRansceiver TRx
- each transceiver Corresponding to a MAC module, forming a PON port.
- VMAC virtual MAC
- the optical line terminal 2402 corresponding to the plurality of transceivers is represented as a virtual optical line terminal and a virtual optical line terminal in the upper management control module 2401.
- at least one optical network unit 2405 constitutes a VPON.
- FIG. 24 it is a passive optical network virtualization system according to another embodiment of the present invention.
- four numbers are transceiver 1 (TRx#1), transceiver 2 (TRx#2), transceiver 3 (TRx#3), and transceiver 4, respectively.
- TRx#4 corresponds to the four optical line terminals 2402 illustrated in Fig.
- each optical network unit includes a virtual MAC (VMAC) module and a wavelength tunable ( ⁇ -tunable) transceiver.
- VMAC virtual MAC
- the wavelength of the wavelength tunable transceiver of the optical network unit can be tuned to the upstream wavelength stream ⁇ 5 of TRx#1, the upstream wavelength stream ⁇ 6 of TRx#2, and the upstream wavelength streams ⁇ 7 and TRx#4 of TRx#3.
- Any one of the upstream wavelength streams ⁇ 8, and then passed through the optical splitter and the backbone fiber, and sent to the arrayed waveguide grating for demultiplexing Defined into different working modes, for example, P2MP PON working mode (EPON, GPON, etc.), P2P GE working mode or 10GE working mode.
- the VPON can be graphically controlled and managed by the upper management control module, and the upper management control module and the VPON communicate through a network standard control interface (for example, an Openflow interface).
- FIG. 24 and FIG. 25 are diagrams showing an example of a passive optical network virtualization system.
- all ONUs of all ODNs can also be created into one large VPON, that is, multiple physical
- the ONUs in the separated ODNs can also belong to the same VPON.
- Through this large VPON there is a global view, and the resources are uniformly controlled and allocated through the global view, so that the bandwidth and hardware resources of multiple PONs can be shared.
- FIG. 26 it is a schematic structural diagram of a passive optical network virtualization system according to another embodiment of the present invention. For the convenience of description, only parts related to the embodiment of the present invention are shown.
- 26 includes an upper layer management control module 2601, at least two optical line terminals 2602, at least two arrayed waveguide gratings 2603, at least two optical splitters 2604, and at least two optical network units. 2605 and at least one cyclic arrayed waveguide grating 2606, wherein the optical line terminal 2602 is used to implement the apparatus for virtualizing the passive optical network provided by any of the embodiments of FIG. 11 and FIG. 15 to FIG. 11 and the device or the functional module/unit of the virtualized passive optical network provided by any of the embodiments of FIG. 15 to FIG. 17, the optical network unit 2605 can be any of FIG. 18, FIG. 22, and FIG.
- the at least two optical line terminals 2602 comprise at least two optical modules, each of the at least two optical modules passing through the optical fiber and the at least two optical fibers respectively and the arrayed waveguide grating 2603 and the optical splitter 2604 connection, at least two optical splitter upper layer management control module 2601, configured to create a virtual passive optical network, and send a virtual passive optical network creation message to the optical line terminal 2602
- the virtual passive optical network creation message includes an identifier VPON ID, a wavelength stream identifier ⁇ - 3 ⁇ 4 ⁇ ID, an optical module identifier M ID, and an optical distribution network identifier ODN ID of the virtual passive optical network to be created, where the VPON ID is used for Identifying a virtual passive optical network consisting of a virtual optical line terminal and at least one optical network unit 2602, wherein the ⁇ -B ⁇ ID ID is used to identify a wavelength stream in which the optical line terminal 2602 and the optical network unit 2605 perform two-way communication, where the M ID is
- the optical line terminal 2602 is configured to receive a virtual passive optical network creation message sent by the upper layer management control module 2601, according to the VPON ID, the ⁇ -flow ID, the M ID, and the ODN ID, and the VPON ID, the M ID, and the ODN.
- the at least one optical network unit 2605 in the virtual passive optical network identified by the ID establishes a communication connection relationship, and the virtual passive optical network creation message is sent to the optical network unit 2605;
- the arrayed waveguide grating 2603 is configured to multiplex the wavelength stream in which the optical line terminal 2602 and the optical network unit 2605 perform bidirectional communication in the downstream direction, and then inject the wavelength into the circular arrayed waveguide grating 2606, and in the upstream direction, the wavelength stream from the cyclic arrayed waveguide grating 2606. After demultiplexing, it is sent to the optical line terminal 2602;
- the cyclic arrayed waveguide grating 2606 is configured to respectively distribute the wavelength streams from the at least two arrayed waveguide gratings 2603 to the at least two optical splitters 2604 in the downstream direction, and perform the two-way communication of the optical line terminals 2602 and the optical network unit 2605 in the uplink direction.
- the wavelength streams are respectively distributed to at least two optical modules; the optical splitter 2604 is configured to broadcast the wavelength stream injected by the arrayed waveguide grating 2603 in the downlink direction, and send the wavelength stream tuned by the optical network unit 2605 in the upstream direction.
- the arrayed waveguide grating 2603 is configured to receive the virtual passive optical network creation message delivered by the optical line terminal 2602, and establish a ⁇ - 3 ⁇ 4 ⁇ entry according to the VPON ID, the ⁇ -flow ID, the M ID, and the ODN ID. And reporting the registration information to the optical line terminal 2602 in the virtual passive optical network identified by the VPON ID, the M ID, and the ODN ID, to establish a communication connection relationship with the optical line terminal 2602, where the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry.
- the ⁇ - 3 ⁇ 4 ⁇ entry includes an optical network unit identifier, the ⁇ - 3 ⁇ 4 ⁇ ID, the M ID, and the ODN ID.
- each optical module contains four transceivers.
- the four numbers in each optical module are respectively transceiver 1 (TRx#l
- the transceiver 2 (TRx#2), the transceiver 3 (TRx#3), and the transceiver 4 (TRx#4) respectively correspond to the four optical line terminals 2602 illustrated in FIG. 26, and the example of FIG. 26 is illustrated.
- the passive optical network virtualization system is described. Referring to FIG. 27, it is a passive optical network virtualization system according to another embodiment of the present invention. In the passive optical network virtualization system illustrated in FIG.
- the ⁇ -flow ID identifies eight wavelength streams, which are: the downstream wavelength stream ⁇ of TRx#1, the downstream wavelength stream ⁇ 5, and the downstream wavelength stream ⁇ 2 of TRx#2.
- each optical module in the downlink direction, four downlink wavelength streams ⁇ , downlink wavelength stream ⁇ 2, downlink wavelength stream ⁇ 3, and downlink wavelength stream ⁇ 4 of each optical module are reconstructed by the arrayed waveguide grating. After being used, it is fed into a port of a 4x4 cyclic arrayed waveguide grating. Then, the 4x4 cyclic arrayed waveguide grating distributes the ⁇ , ⁇ 2, ⁇ 3, and ⁇ 4 into four different ODNs, respectively, so that each ODN is included. Four different wavelengths, and these four wavelengths are from different optical modules.
- ⁇ is allocated to the ODN1, ⁇ 2 is allocated to the ODN2, ⁇ 3 is allocated to the ODN3, and ⁇ 4 is allocated to the ODN4;
- ⁇ is assigned to ODN2, ⁇ 2 is assigned to ODN3, ⁇ 3 is assigned to ODN4, and ⁇ 4 is assigned to ODN1;
- 4 wavelengths of optical module ⁇ 3 pass 4x4
- ⁇ is assigned to ODN3, ⁇ 2 is assigned to ODN4, ⁇ 3 is assigned to ODN1, and ⁇ 4 is assigned to ODN2; after the four wavelengths of optical module ⁇ 4 pass through the 4x4 cyclic arrayed waveguide grating, ⁇ is assigned to ODN4, ⁇ 2 is assigned to ODN1, ⁇ 3 is assigned to ODN2, and ⁇ 4
- each ODN contains four wavelengths ⁇ , ⁇ 2, ⁇ 3, and ⁇ 4, and the four downstream wavelengths are from different optical modules.
- the splitter broadcasts the downstream wavelengths, and all ONUs receive four downstream wavelengths ⁇ , ⁇ 2, ⁇ 3, and ⁇ 4.
- the transceiver of the ONU is a wavelength tunable ( ⁇ -tunable) transceiver that can receive any wavelength of ⁇ , ⁇ 2, ⁇ 3, and ⁇ 4 in the downstream direction.
- the wavelength of the ONU's wavelength tunable transceiver in different ODNs can be tuned to any of ⁇ 5, ⁇ 6, ⁇ 7, and ⁇ 8, and then through the optical splitter and backbone fiber to the 4x4 cyclic array waveguide.
- Raster and the same distribution method in the downlink, the 4 wavelengths in each ODN are distributed to different upstream output ports by 4x4 cyclic arrayed waveguide gratings, so that each output port contains 4 wavelengths, and the 4 wavelengths are from different ODN.
- the arrayed waveguide grating is then demultiplexed, and the four upstream wavelengths are sent to the corresponding transceivers of the four optical modules.
- the step can be completed by a program to instruct related hardware, such as one or more or all of the following methods:
- Method 1 Receive a virtual passive optical network creation message sent by the upper management control module, where the virtual passive optical network creation message includes an identifier VPON ID of the virtual passive optical network to be created and at least one wavelength flow identifier ⁇ - 3 ⁇ 4 ⁇ ID
- the VPON ID is used to identify a virtual passive optical network composed of a virtual optical line terminal and the at least one optical network unit, where the ⁇ - 3 ⁇ 4 ⁇ is used for ID to identify a wavelength stream; according to the VPON ID and at least one ⁇ - 3 ⁇ 4 ⁇ ID, establishing a communication connection relationship with at least one optical network unit in the virtual passive optical network identified by the VPON ID.
- the optical network unit receives the delivered virtual passive optical network creation message, where the virtual passive optical network creation message includes an identifier VPON ID of the virtual passive optical network to be created and at least one wavelength flow identifier ⁇ - 3 ⁇ 4 ⁇ ID
- the optical network unit establishes a ⁇ - 3 ⁇ 4 ⁇ entry according to the VPON ID and the ⁇ - 3 ⁇ 4 ⁇ ID, and reports registration information to the optical line terminal in the virtual passive optical network identified by the VPON ID to establish the optical line with the optical line a communication connection relationship of the terminal, the registration information includes a ⁇ - 3 ⁇ 4 ⁇ entry, where the ⁇ - 3 ⁇ 4 ⁇ entry includes an optical network unit identifier and the ⁇ - 3 ⁇ 4 ⁇ ID.
- the program may be stored in a computer readable storage medium, and the storage medium may include: Read Only Memory (ROM), Random Access Memory (RAM), disk or optical disk.
- ROM Read Only Memory
- RAM Random Access Memory
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EP13886805.4A EP2999167B1 (en) | 2013-06-09 | 2013-06-09 | Method and device for virtualization passive optical network and passive optical network virtualization system |
BR112015030807-4A BR112015030807B1 (pt) | 2013-06-09 | 2013-06-09 | Método e aparelho para virtualizar rede ótica passiva e sistema de virtualização de rede ótica passiva |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104486242A (zh) * | 2014-12-19 | 2015-04-01 | 上海斐讯数据通信技术有限公司 | 一种epon网络的vlan集中控制方法及系统 |
WO2017177619A1 (zh) * | 2016-04-11 | 2017-10-19 | 中兴通讯股份有限公司 | Sdn/nfv开放接入网系统及管理onu的方法、设备 |
WO2022001840A1 (zh) * | 2020-06-29 | 2022-01-06 | 华为技术有限公司 | 一种无源光网络的业务发放方法 |
CN115379312A (zh) * | 2021-05-17 | 2022-11-22 | 上海诺基亚贝尔软件有限公司 | 对时分复用pon系统进行虚拟化的方法和装置 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2913947B1 (en) * | 2014-02-27 | 2019-11-27 | ADVA Optical Networking SE | Passive optical network and optical line terminal |
CN110391864B (zh) * | 2014-08-13 | 2021-02-23 | 华为技术有限公司 | 无源光网络的通信方法、装置以及系统 |
US10177871B2 (en) | 2015-07-10 | 2019-01-08 | Futurewei Technologies, Inc. | High data rate extension with bonding |
ES2922823T3 (es) * | 2016-11-17 | 2022-09-20 | Huawei Tech Co Ltd | Método, dispositivo y sistema de comunicación de red óptica pasiva |
EP3579461B1 (en) | 2017-02-28 | 2022-01-26 | Huawei Technologies Co., Ltd. | Virtualization method for optical line terminal (olt) device, and related device |
CN113645005A (zh) * | 2018-04-28 | 2021-11-12 | 华为技术有限公司 | 报文处理方法及设备 |
US11178472B2 (en) | 2018-06-08 | 2021-11-16 | Nokia Solutions And Networks Oy | Monitoring multiple passive optical networks |
US11101889B2 (en) * | 2019-03-02 | 2021-08-24 | Sealight Technologies, Inc. | Virtual optical edge device |
CN112235661B (zh) * | 2019-07-15 | 2023-05-23 | 中兴通讯股份有限公司 | 光网络单元管理方法、装置、系统和存储介质 |
CN112188328B (zh) * | 2020-09-28 | 2023-04-07 | 酒泉钢铁(集团)有限责任公司 | 一种基于gpon网络场景下实现sdn+vxlan的系统及方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1878122A (zh) * | 2005-06-07 | 2006-12-13 | 中兴通讯股份有限公司 | 以太网无源光网络下行广播、洪泛的信息隔离方法及装置 |
CN101047583A (zh) * | 2006-03-31 | 2007-10-03 | 株式会社日立制作所 | 支持虚拟局域网服务的无源光网络系统及相应方法 |
CN101247310A (zh) * | 2008-03-26 | 2008-08-20 | 中兴通讯股份有限公司 | 虚拟局域网过滤配置方法及系统 |
US20130004156A1 (en) * | 2011-06-30 | 2013-01-03 | Ubiquoss Inc. | Passive optical network system and method for detecting fault in optical network terminal |
US20130045012A1 (en) * | 2011-08-17 | 2013-02-21 | Nec Laboratories America, Inc. | Multi-Service Provisioning in Orthogonal Frequency Division Multiplexing-Passive Optical network OFDMA-PON |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101064682B (zh) * | 2006-04-29 | 2010-08-04 | 华为技术有限公司 | 光网络终端及其报文处理方法 |
JP4388556B2 (ja) * | 2007-01-09 | 2009-12-24 | 株式会社日立コミュニケーションテクノロジー | パッシブ光ネットワークシステムおよび波長割当方法 |
US20090092394A1 (en) * | 2007-10-08 | 2009-04-09 | Nec Laboratories America, Inc. | Orthogonal Frequency Division Multiple Access Based Virtual Passive Optical Network (VPON) |
US8306422B2 (en) * | 2008-05-27 | 2012-11-06 | LG Ericcson Co., Ltd. | WDM PON protection scheme using a dual port arrayed waveguide grating (AWG) |
US9667377B2 (en) * | 2011-04-08 | 2017-05-30 | Futurewei Technologies, Inc. | Wavelength indication in multiple-wavelength passive optical networks |
-
2013
- 2013-06-09 EP EP13886805.4A patent/EP2999167B1/en active Active
- 2013-06-09 CN CN201380000651.4A patent/CN104365063B/zh active Active
- 2013-06-09 BR BR112015030807-4A patent/BR112015030807B1/pt active IP Right Grant
- 2013-06-09 WO PCT/CN2013/077058 patent/WO2014198017A1/zh active Application Filing
-
2015
- 2015-12-09 US US14/964,280 patent/US10091566B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1878122A (zh) * | 2005-06-07 | 2006-12-13 | 中兴通讯股份有限公司 | 以太网无源光网络下行广播、洪泛的信息隔离方法及装置 |
CN101047583A (zh) * | 2006-03-31 | 2007-10-03 | 株式会社日立制作所 | 支持虚拟局域网服务的无源光网络系统及相应方法 |
CN101247310A (zh) * | 2008-03-26 | 2008-08-20 | 中兴通讯股份有限公司 | 虚拟局域网过滤配置方法及系统 |
US20130004156A1 (en) * | 2011-06-30 | 2013-01-03 | Ubiquoss Inc. | Passive optical network system and method for detecting fault in optical network terminal |
US20130045012A1 (en) * | 2011-08-17 | 2013-02-21 | Nec Laboratories America, Inc. | Multi-Service Provisioning in Orthogonal Frequency Division Multiplexing-Passive Optical network OFDMA-PON |
Non-Patent Citations (1)
Title |
---|
See also references of EP2999167A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104486242A (zh) * | 2014-12-19 | 2015-04-01 | 上海斐讯数据通信技术有限公司 | 一种epon网络的vlan集中控制方法及系统 |
CN104486242B (zh) * | 2014-12-19 | 2017-10-13 | 上海斐讯数据通信技术有限公司 | 一种epon网络的vlan集中控制方法及系统 |
WO2017177619A1 (zh) * | 2016-04-11 | 2017-10-19 | 中兴通讯股份有限公司 | Sdn/nfv开放接入网系统及管理onu的方法、设备 |
CN107294753A (zh) * | 2016-04-11 | 2017-10-24 | 中兴通讯股份有限公司 | 一种sdn/nfv开放接入网系统及管理onu/ont的方法 |
CN107294753B (zh) * | 2016-04-11 | 2019-06-25 | 中兴通讯股份有限公司 | 一种sdn/nfv开放接入网系统及管理onu/ont的方法 |
WO2022001840A1 (zh) * | 2020-06-29 | 2022-01-06 | 华为技术有限公司 | 一种无源光网络的业务发放方法 |
CN115379312A (zh) * | 2021-05-17 | 2022-11-22 | 上海诺基亚贝尔软件有限公司 | 对时分复用pon系统进行虚拟化的方法和装置 |
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US20160088377A1 (en) | 2016-03-24 |
EP2999167B1 (en) | 2018-05-09 |
CN104365063B (zh) | 2018-03-13 |
EP2999167A4 (en) | 2016-04-20 |
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