WO2012149770A1 - Method, device and system for converting terminal device identifiers - Google Patents
Method, device and system for converting terminal device identifiers Download PDFInfo
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- WO2012149770A1 WO2012149770A1 PCT/CN2011/080166 CN2011080166W WO2012149770A1 WO 2012149770 A1 WO2012149770 A1 WO 2012149770A1 CN 2011080166 W CN2011080166 W CN 2011080166W WO 2012149770 A1 WO2012149770 A1 WO 2012149770A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2596—Translation of addresses of the same type other than IP, e.g. translation from MAC to MAC addresses
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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
- 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 optical communications, and more particularly to a method, apparatus and system for converting an identifier of a terminal device in the field of optical communications.
- the Gigabit Passive Optical Network is a point-to-multipoint (P2MP) fiber access network.
- Optical Line Terminal OLT
- ONU Optical Network Unit
- ONT Optical Network Terminal
- ODN optical Distribution Network
- PON Passive Optical Network
- the OLT provides both a network-side interface and one or more ODNs through a PON-side interface.
- ODN uses passive optical components for connecting OLT devices and ONU devices/ONT devices for distributing or multiplexing data signals between the OLT and the ONU.
- the ONU provides both a user-side interface and an ODN through a PON-side interface. If the ONU directly provides a user port function, such as an Ethernet user port for a personal computer ("Personal Computer"), the ONU can be called an ONT. Unless otherwise stated, the ONUs mentioned below will be referred to as ONUs or ONTs.
- the OLT to the ONU is called the downlink, and the downlink is the wavelength of 1490 nm.
- the OLT broadcasts the downlink data stream to all the ONUs according to the Time Division Multiplexing (TDM) method. Receive data with its own identity.
- TDM Time Division Multiplexing
- the uplink from the ONU to the OLT is at the wavelength of 1310 nm.
- the GPON/EPO system adopts Time Division Multiple Access (TDMA), that is, the OLT is used for each ONU. Allocating time slots, each ONU must send data in strict accordance with the time slot allocated by the OLT.
- TDMA Time Division Multiple Access
- the GPON protocol is established by the International Telecommunication Union Telecommunication Standardization Group (ITU)
- ITU-T Telecommunication Standardization Sector
- GEM G.984 Series Standard Definition
- TDM PON In order to increase the capacity of PON, the industry proposes to evolve TDM PON to support large branch ratio based on TDM-PON system such as GPON, using Wavelength Division Multiplexing (WDM) and multi-level optical splitting technology.
- WDM Wavelength Division Multiplexing
- HPON Hybrid PON
- HPON Wavelength Division Multiplexing
- the GEM-PORT-ID Due to the ONU-ID and ALLOC-ID that the MAC layer protocol of the existing TDM-PON system such as GPON can support, the GEM-PORT-ID is very limited. For example, it can only support up to 256 ONU-IDs (including broadcast ID). , becoming a larger branch than HPON technology supports more ONU restrictions at the MAC layer. Summary of the invention
- the embodiment of the invention provides a method and a device for converting an identifier of a terminal device, which can implement support of a medium access control layer for a large branch than a passive optical network system, and can not change the optical network unit or the terminal.
- a method for converting an identifier of a terminal device comprising: receiving uplink data sent by a terminal device, where the control portion of the uplink data includes a device identifier indicating the terminal device; and corresponding to the uplink data Bandwidth authorization information, obtaining an extended device identifier corresponding to the uplink data; determining that the device identifier included in the control portion of the uplink data matches the extended device identifier; the device included in the control portion of the uplink data The identifier is replaced with the extension device identifier.
- an apparatus for converting an identifier of a terminal device comprising: a receiving unit, configured to receive uplink data sent by the terminal device, where the control part of the uplink data includes a device identifier indicating the terminal device And an obtaining unit, configured to acquire, according to the bandwidth authorization information corresponding to the uplink data, an extended device identifier corresponding to the uplink data, where the determining unit is configured to determine the device included in the control part of the uplink data received by the receiving unit The identifier is matched with the extended device identifier acquired by the acquiring unit; the first replacing unit is configured to replace the device identifier included in the control part of the uplink data received by the receiving unit with the extension acquired by the acquiring unit Device identifier.
- a passive optical network system including: an optical line terminal and a plurality of optical network units, wherein the optical line terminal is connected to the plurality of optical network units through an optical distribution network;
- the optical network unit is configured to send uplink data to the optical network unit, where the optical line terminal is configured to receive uplink data that is sent by the optical network unit and that carries a device identifier that indicates the optical network unit, according to And obtaining, by the bandwidth authorization information corresponding to the uplink data, an extended device identifier corresponding to the uplink data, and determining the uplink data when determining that the carried device identifier of the uplink data matches the extended device identifier The carried device identifier is replaced with the extended device identifier.
- a method, an apparatus, and a system for converting an identifier of a terminal device can implement a medium access control layer to a large branch ratio passive optical network system by replacing an identifier of the terminal device
- the support and ability to be compatible with existing passive optical network standards without changing optical network units or terminals can increase system capacity and reduce system cost.
- FIG. 1 is a schematic diagram of a network architecture of an ODSM-PON system according to an embodiment of the present invention.
- FIG. 2 is a schematic flow chart of a method of converting an identifier of a terminal device according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of an extended identifier according to an embodiment of the present invention.
- FIG. 4 is a schematic flow chart of a method of converting an identifier of a terminal device according to another embodiment of the present invention.
- Figure 5 is a schematic flow chart of a method of converting an identifier of a terminal device in an HPON system according to an embodiment of the present invention.
- Figure 6 is a schematic flow chart of a method of converting an identifier of a terminal device in accordance with still another embodiment of the present invention.
- Fig. 7 is a schematic block diagram of an apparatus for converting an identifier of a terminal device according to an embodiment of the present invention.
- FIG. 8 is a schematic block diagram of an acquisition unit according to an embodiment of the present invention.
- FIG. 9 is a schematic block diagram of an apparatus for converting an identifier of a terminal device according to another embodiment of the present invention.
- FIG. 10 is a schematic block diagram of a second replacement unit in accordance with an embodiment of the present invention. detailed description
- Non-source optical network systems such as GPON, EPON, 10G-GPON, 10G-EPON, ODSM-PON, TWDM-PON.
- GPON GPON-based HPON system
- the terminal device including the ONU and the ONT and the network side device including the OLT are taken as an example, but the embodiment of the present invention is not limited thereto.
- the HPON system may be dynamic spectrum management (Optical
- ODSM Dynamic Spectrum Management
- the ODN can use two-stage splitting, the first stage is a hybrid optical multiplexer, and the second stage is a passive optical splitting device.
- the following lines and downlinks are illustrated by four pairs of wavelengths.
- the OLT to the ONU is called downlink, the downlink uses four wavelengths, and coexists in WDM mode.
- the ONU is divided into four groups according to the downlink wavelength.
- the OLT broadcasts the downlink data stream to all corresponding receiving wavelengths in TDM mode. ONU, but each ONU only receives data with its own identity.
- the OLT uses a multiplexer (Demultiplexer, called "DEMUX”) to divide the upstream wavelength into four channels, each channel is received by one receiver, in different uplink channels.
- ONUs coexist in WDM mode.
- each ONU adopts the TDMA mode in the uplink channel, that is, the OLT allocates time slots for each ONU in the channel, and each ONU must strictly allocate according to the OLT.
- the slot sends data.
- the continuous signal light emitted by the four transmitters Txl ⁇ Tx4 of the OLT is coupled to the WDM device through a multiplexer (multiplexer, referred to as "MUX") and output to the backbone fiber of the ODN, and then transmitted to the hybrid fiber through the backbone fiber.
- MUX multiplexer
- Hybrid-Box in the Hybrid-Box, is split by a WDM coupler and passed through an erbium-doped optical fiber (Erbium-doped Optical Fiber)
- the Amplifier, the tube is called "EDFA”
- EDFA Erbium-doped Optical Fiber
- another MUX is amplified, and then demultiplexed by another MUX, coupled into the branch fiber, transmitted to the second-stage passive optical splitter via the branch fiber, and transmitted to each ONU through the incoming fiber.
- the burst optical signal transmitted by the ONU is coupled into the branch fiber through the second-stage passive optical splitter through the second-stage passive optical splitter, and enters the Hybrid-Box after branching the optical fiber, and is separated by the WDM device.
- the splitter After the splitter is coupled, it is amplified by a semiconductor optical amplifier ("SOA”) and then enters the trunk fiber through the WDM device, and then transmitted to the OLT through the main kilofiber, after the WDM device inside the OLT and the adjustable DEMUX. Received by four receivers RxA ⁇ RxD respectively.
- SOA semiconductor optical amplifier
- a total of 16 pairs (or even more) of wavelengths can be achieved in the uplink and downlink, thereby supporting 1024 or more ONUs, that is, Do 1: Branch ratio of 1024 (or even higher).
- ODSM-PON adopts WDM and TDM technology, which can keep the existing ODN and ONU unchanged. It can greatly reduce the deployment and operation and maintenance cost of the PON system while protecting the bandwidth, and protect the existing investment. It is the technical direction of the existing PON evolution.
- TDM-PON such as EPON or GPON.
- the method 100 includes:
- the central office device receives uplink data sent by the terminal device, where the control part of the uplink data includes a device identifier indicating the terminal device.
- the central office device acquires an extended device identifier corresponding to the uplink data according to the bandwidth authorization information corresponding to the uplink data.
- the central office device determines that the device identifier included in the control part of the uplink data matches the extended device identifier.
- the central office device replaces the device identifier included in the control part of the uplink data with the extended device identifier.
- the central office device and the terminal device may be an optical line terminal OLT and an optical network unit ONU, respectively.
- the OLT may acquire the extended device identifier corresponding to the uplink data according to the bandwidth authorization information corresponding to the uplink data, and determine the device identifier included in the control part of the uplink data.
- the extended device identifier matches, the device identifier included in the control portion of the uplink data is replaced with the extended device identifier Identification.
- the method for converting the identifier of the terminal device in the embodiment of the present invention can support a larger number of terminal devices by replacing the identifier of the terminal device, so as to achieve greater branch-to-passive light at the medium access control layer.
- the embodiment of the present invention may adopt the following scheme: respectively, the ONU, the T-CONT, and the extended ONU-ID, the extended ALLOC-ID, and the extended GEM-PORT-ID are respectively marked in the OLT.
- GEM-PORT while the ONU still marks the ONU, T-CONT, and GEM-PORT with the original ONU-ID, ALLOC-ID, and GEM-PORT-ID.
- the OLT can map according to the bandwidth when receiving the uplink. (Bandwidth Map, "BWMAP”) and the ONU packet mapping table perform the above ID conversion, and the ID conversion is performed according to the ONU packet mapping table at the time of downlink transmission.
- the technical solution of the embodiment of the present invention can keep the ONU unchanged, the OLT and the ONU interaction protocol process is unchanged, and the frame structure between the OLT and the ONU is unchanged, that is, the technical solution of the embodiment of the present invention can be compatible with the existing PON standard.
- the existing ONU equipment can be reused as much as possible, and the OLT can support the large branch than the PON system, and can make the MAC layer reusable, thereby increasing the capacity of the system and reducing the cost of the system.
- the extended device identifier NEW-ONU-ID is used as the unique identifier of the ONU connected to the PON system, and the transmission container identifier NEW-ALLOC-ID is extended as the internal PON system.
- the unique tag of the T-CONT, with the extended port identifier NEW-PORT-ID as the unique tag for the GEM-PORT within the PON system.
- the extended device identifier NEW-ONU-ID includes a downlink channel identifier DS-PON-ID indicating a downlink channel, and a device identifier ONU-ID indicating the terminal device, and all ONUs in the same downlink channel
- the ID is unique;
- the extended transport container identifier NEW-ALLOC-ID includes the downstream channel identifier DS-PON-ID and the transport container identifier ALLOC-ID indicating the transport container, and all ALLOCs in the same downstream channel
- the ID is unique;
- the extended port identifier NEW-PORT-ID includes the downstream channel identifier DS-PON-ID and the port identifier PORT-ID indicating the port, and all of the same downstream channel
- the PORT-ID is unique.
- each ONU can only receive one downlink wavelength information, and each downlink wavelength corresponds to a part of ONU, for example, a 0NU subset belonging to the same P0N branch, where different P0N branches respectively correspond to different downstream wavelengths.
- the extended device identifier NEW-ONU-ID may include two parts, the former part is a downlink channel identifier DS-PON-ID, and the latter part is only capable of receiving the downlink wavelength corresponding to the DS-PON-ID.
- the ONU's device identifier ONU-ID The ONU's device identifier ONU-ID.
- the definition and function description of the device identifier ONU-ID in the latter part conforms to the definition and function description of the existing standard, such as the ONU-ID is equal to 255 as the broadcast ID.
- the extended transport container identifier NEW-ALLOC-ID can include the downstream channel identifier.
- the extended port identifier NEW-PORT-ID may include the downlink channel identifier DS-PON-ID and the DS - The port identifier PORT-ID in the ONU subset corresponding to the PON-ID.
- the DS-PON-ID is all 1 (referring to binary, such as OxFF) indicating broadcast on all downstream wavelengths. If the DS-PON-ID part of the NEW-ONU-ID is all 1 (referring to binary, such as OxFF), and the ONU-ID part is the ID of a single ONU, the same ONU as the ONU-ID on all downlink wavelengths is used. Multicast; If the ONU-ID part is a broadcast ID, that is, all 1s (referred to as binary, such as OxFF), all ONUs are broadcast. If the DS-PON-ID of the NEW-ONU-ID is a single downlink wavelength ID and the ONU-ID part is a broadcast ID, all ONUs corresponding to the DS-PON-ID are multicast. The details of NEW-ALLOC-ID and NEW-PORT-ID will not be described again.
- the OLT only needs to ensure that the ONU-IDs assigned to the ONU subset of the same downstream wavelength are unique. Similarly, the ALLOC-ID and PORT-ID are unique within the ONU subset of the same downstream wavelength. of. This also means that the ONU-IDs in the ONU subsets of different downstream wavelengths may be the same.
- the downlink channel identifier DS-PON-ID and the extended identifier may have a larger length, for example,
- the extended identifier may be used to indicate any one of a terminal device, a transport container, and a port, and to indicate a downlink channel, and the extended identifier is not limited to the downlink channel identifier and the device identifier, the original transport container.
- the OLT device receives uplink data sent by the terminal device ONU, where the uplink data may carry control information, where the control information may include a device identifier indicating the terminal device. ONU-ID.
- the OLT may acquire an extended transport container identifier corresponding to the uplink data from the bandwidth grant information; and obtain the extended transport container identifier according to the terminal device group mapping table generated in the ONU registration phase.
- the corresponding extended device identifier may include a downlink channel identifier, an uplink channel identifier, a device identifier, a transport container identifier, a port identifier, an extended device identifier, an extended transport container identifier, and an extended port identifier. Correspondence.
- the bandwidth authorization information is sent to the ONU in the form of a bandwidth map (BWMAP), and the format and field meaning of the BWMAP are defined in ITU-T G.984.3. No longer.
- BWMAP bandwidth map
- the extended transport container identifier is used in the BWMAP instead of the transport container identifier.
- the format and meaning of the remaining fields are still defined by the GPON standard.
- the format and meaning of the BWMAP are completely defined by the GPON standard.
- Table 1 shows the ONU packet mapping table formed by the ONU during the registration phase.
- the ONU packet mapping table includes a downlink channel identifier DS-PON-ID, an uplink channel identifier US-PON-ID, a device identifier ONU-ID, a transport container identifier ALLOC-ID, a port identifier PORT-ID, an extension device The correspondence between the identifier NEW-ONU-ID, the extended transport container identifier NEW-ALLOC-ID, and the extended port identifier NEW-PORT-ID.
- mapping relationship between the ONU and the upstream and downstream wavelengths before the ONU is online may be uncertain. Therefore, in the embodiment of the present invention, the mapping relationship between the ONU-ID, the ALLOC-ID, and the GEM-PORT-ID and the OLT transmitter and the receiver can be established by the following two methods to solve the ONU automatic discovery, ranging, and Uplink bandwidth allocation, routing of upstream and downstream traffic.
- One method is that the OLT sequentially starts the ONU automatic discovery process at each downstream wavelength, the same The downlink wavelength ONU is a subset, and the 0LT establishes a correspondence relationship between the ONU and the like and the receiver and the transmitter of the OLT when the 0NU responds.
- Another method is that the OLT starts the automatic discovery process in parallel on all downlink wavelengths, adds the number of the OLT transmitter in the downlink message, and sends it back to the OLT in the uplink message, so that the OLT establishes the ONU and the receiver and the transmitter of the OLT. Correspondence.
- an ONU packet mapping table as shown in Table 1 is formed.
- the OLT device determines the uplink.
- the device identifier ONU-ID included in the control portion of the data matches the extended device identifier NEW-ONU-ID.
- the OLT replaces the device identifier ONU-ID included in the control portion of the uplink data with the extended device identifier NEW-ONU-ID.
- the method for converting the identifier of the terminal device in the embodiment of the present invention by replacing the identifier of the terminal device, enables the medium access control layer to support the large branch than the passive optical network system, and can change the light without changing the light.
- the network unit or terminal is compatible with existing passive optical network standards, thereby increasing system capacity and reducing system cost.
- the ONU, T-CONT, and GEM-PORT are marked internally by the OLT device with the extended identifiers NEW-ONU-ID, NEW-ALLOC-ID, and NEW-PORT-ID, and the ONU is internally
- the identifiers ONU-ID, ALLOC-ID, and PORT-ID mark the ONU, T-CONT, and GEM-PORT. Therefore, ID conversion can be performed inside the OLT, so that the message transfer mechanism between the OLT and the ONU can be performed normally.
- the method 100 for converting an identifier of a terminal device may further include:
- the OLT device performs a first identifier replacement process on the data portion of the uplink data before processing the data portion of the uplink data.
- the OLT device After processing the data portion of the uplink data, the OLT device performs a second identifier replacement process on the data portion of the uplink data.
- the first identifier replacement process includes replacing the device identifier, the transport container identifier, and the port identifier with a corresponding extended device identifier, an extended transport container identifier, and an extended port identifier, respectively;
- the second identifier replacement process includes replacing the extended device identifier, the extended transport container identifier, and the extended port identifier with respective device identifiers, transport container identifiers, and port identifiers.
- the extended device identifier includes a downlink channel identifier DS-PON-ID indicating a downlink channel, and the device identifier ONU-ID indicating the terminal device;
- the extended transmission container identifier includes the downlink channel An identifier and the transport container identifier ALLOC-ID indicating the transport container;
- the extended port identifier including the downstream channel identifier and the port identifier PORT-ID indicating the port.
- uplink data The processing of uplink data according to an embodiment of the present invention will be described in detail below with reference to FIG. 5, taking a GPON-based HPON system as an example.
- a method 200 for converting an identifier of a terminal device in an HPON system includes:
- the OLT device receives a Gigabit-capable passive optical network transmission convergence (GTC) frame carrying uplink data, and processes the physical layer in the uplink GTC frame.
- GTC Gigabit-capable passive optical network transmission convergence
- PLOAM Physical Layer Operations Administration and Maintenance
- the first identifier replacement processing is performed on the data portion of the PLOAM frame;
- the OLT device performs the first identifier on the OMCI packet before processing the data part of the Optical Network Unit Management and Control Interface (OMCI) packet of the optical network unit that is carried by the GEM frame.
- OMCI Optical Network Unit Management and Control Interface
- the uplink GTC receiving module receives the uplink GTC frame of the ONU according to the extended transmission container identifier NEW-ALLOC-ID information, the start time, and the stop time information of the B WMAP (as shown in S110); the uplink GTC receiving The module checks according to the ONU group mapping table. Find the extended device identifier NEW-ONU-ID corresponding to the extended transport container identifier NEW-ALLOC-ID in the BWMAP (as shown in S120), and expand the ONU-ID portion of the device identifier NEW-ONU-ID with The ONU-ID field in the uplink GTC frame is compared.
- the uplink transmission of the ONU is in accordance with the bandwidth allocation authorization of the OLT (as shown in S130), and the next processing is performed, otherwise the device discards and generates an alarm.
- the uplink GTC receiving module replaces the device identifier ONU-ID of the corresponding uplink GTC frame header with the corresponding extended device identifier NEW-ONU-ID (as indicated by S140).
- the uplink GTC receiving module For the control part of the uplink GTC frame, the uplink GTC receiving module has replaced the ONU-ID with the corresponding NEW-ONU-ID; for the PLOAM frame included in the data part of the uplink GTC frame, the uplink GTC receiving module hands the PLOAM frame to the PLOAM
- the module processes, for the data (Data) part of the PLOAM frame, if the ONU-ID, ALLOC-ID or PORT-ID is involved, the PLOAM module is replaced with the corresponding NEW-ONU-ID, NEW-ALLOC-ID before processing. Or NEW-PORT-ID (as shown in S210;), after processing, the PLOAM module converts it into a corresponding ONU-ID, ALLOC-ID or PORT-ID (as shown in S220).
- the control portion of the uplink PLOAM frame may be replaced by the uplink GTC receiving module or the PLOAM module with the corresponding EW-ONU-ID.
- the DBRu field includes DBA (Dynamic Bandwidth Allocation) and CRC (Cyclic Redundancy Check).
- DBA Dynamic Bandwidth Allocation
- CRC Cyclic Redundancy Check
- the DBA field is an indication of user traffic demand information. Since the DBRu field itself does not contain ID information, but the uplink timing relationship corresponds to the NEW-ALLOC-ID, the uplink GTC receiving module extracts the NEW-ALLOC-ID and DBA and hands it to the DBA calculation module for processing.
- the PORT-ID of the GEM frame header needs to be replaced with the corresponding NEW-PORT-ID, which is converted by the uplink GTC receiving module and then sent to the uplink GEM receiving module for processing (such as S230). Show). Since the normal GEM payload is independent of the ID conversion, it can be forwarded from the network side after processing according to the prior art.
- OMCI Optical Network Unit Management and Control Interface
- the OMCI packet is distinguished from the normal GEM payload by PORT-ID or NEW-PORT-ID.
- the PORT-ID or NEW-PORT-ID is the same as the ONU-ID or NEW-ONU-ID.
- the GEM header is processed in the upstream GEM receiving module and is associated with the NEW-ONU-ID or NEW-PORT-ID; the processing of the data portion other than the GEM frame header is implemented by the OMCI module, according to the OMCI implementation principle or The standard definition, if an ONU-ID, ALLOC-ID or PORT-ID is involved, the OMCI module is replaced with the corresponding NEW-ONU-ID, NEW-ALLOC-ID or NEW-PORT-ID before processing (as shown in S240). After processing, the OMCI module converts it into the corresponding ONU-ID, ALLOC-ID or PORT-ID (as shown in S250;).
- the upstream GTC receiving module forwards NEW-ALLOC-ID and DBA (extracted from DBRu) to the DBA computing module, which calculates each upstream channel (marked with US-PON-ID) assigned to each T-CONT The bandwidth size (marked with NEW-ALLOC-ID), and the calculation result is given to the BWMAP generation module.
- the BWMAP generation module groups the bandwidth calculation results of each T-CONT according to the DS-PON-ID, and then allocates specific time slot grants for each T-CONT, and sorts according to the start time to generate a BWMAP grouped by DS-PON-ID.
- the BWMAP conversion module replaces the NEW-ALLOC-ID with the corresponding ALLOC-ID, and then delivers it to the downlink GTC transmission module corresponding to the DS-PON-ID.
- the BWMAP reassembly module re-groups the BWMAPs of the DS-PON-IDs generated by the BWMAP generation module according to the US-PON-ID corresponding to the NEW-ALLOC-ID, and sorts them according to the start time, and then delivers them to the US-PON-ID respectively.
- Corresponding upstream GTC receiving module corresponds the BWMAP conversion module.
- the method for converting the identifier of the terminal device in the embodiment of the present invention by replacing the identifier of the terminal device, enables the medium access control layer to support the large branch than the passive optical network system, and can change the light without changing the light.
- the network unit or terminal is compatible with existing passive optical network standards, thereby increasing system capacity and reducing system cost.
- a method 300 of converting an identifier of a terminal device includes:
- the OLT device replaces the extended device identifier, the extended transport container identifier, and the extended port identifier in the information sent to the terminal device with the corresponding device identifier, the transport container identifier, and the port identifier, respectively, and forms a downlink.
- the OLT device sends the downlink data to the terminal device.
- the HPON system is still taken as an example for description.
- the OMCI message output by the OMCI module is already converted to ONU-ID, ALLOC-ID or PORT-ID, and the correspondence with NEW-ONU-ID or NEW-PORT-ID is also clear.
- the OMCI module forwards the OMCI 4 ⁇ message to the corresponding downstream GEM sending module according to the DS-PON-ID corresponding to the NEW-PORT-ID.
- the downlink GEM sending module encapsulates the OMCI message and the service data into a GEM frame, replaces the NEW-PORT-ID with the PORT-ID, and then passes it to the downlink GTC sending module (as shown in S310).
- the downlink PLOAM message output by the PLOAM module has been converted into ONU-ID, ALLOC-ID or PORT-ID, and the correspondence with the NEW-ONU-ID is also clear.
- the PLOAM module forwards the PLOAM packet to the corresponding downlink GTC sending module according to the DS-PON-ID corresponding to the NEW-ONU-ID (as shown in S310).
- the downlink GTC sending module assembles the downlink PLOAM message, the BWMAP, and the GEM frame, which are converted by the ID, into a downlink GTC frame, and sends the information to the ONU through the corresponding transmitter (as shown in S320).
- the method for converting the identifier of the terminal device in the embodiment of the present invention by replacing the identifier of the terminal device, enables the medium access control layer to support the large branch than the passive optical network system, and can change the light without changing the light.
- the network unit or terminal is compatible with existing passive optical network standards, thereby increasing system capacity and reducing system cost.
- an apparatus 500 for converting an identifier of a terminal device includes:
- the receiving unit 510 is configured to receive uplink data sent by the terminal device, where the control part of the uplink data includes a device identifier indicating the terminal device;
- the obtaining unit 520 is configured to obtain, according to the bandwidth authorization information corresponding to the uplink data, an extended device identifier corresponding to the uplink data.
- a determining unit 530 configured to determine that the device identifier included in the control part of the uplink data received by the receiving unit matches the extended device identifier acquired by the acquiring unit;
- the first replacing unit 540 is configured to replace, by the receiving unit, the device identifier included in the control part of the uplink data with the extended device identifier acquired by the acquiring unit.
- An apparatus for converting an identifier of a terminal device by identifying an identifier of the terminal device
- the replacement of the symbol enables the medium access control layer to support the large branch than the passive optical network system, and can be compatible with the existing passive optical network standard without changing the optical network unit or the terminal, thereby improving the capacity of the system. And reduce the cost of the system.
- the obtaining unit 520 includes: a first obtaining subunit 521, configured to acquire an extended transport container identifier in the bandwidth authorization information;
- a second obtaining sub-unit 522 configured to obtain, according to the terminal device group mapping table generated in the registration phase, the extended device identifier corresponding to the extended transport container identifier, where the terminal device group mapping table includes a downlink channel identifier, Correspondence between the upstream channel identifier, device identifier, transport container identifier, port identifier, extended device identifier, extended transport container identifier, and extended port identifier.
- the bandwidth authorization information is a bandwidth map.
- the determining unit 530 is further configured to: when the device identifier included in the control part of the uplink data is the same as the device identifier included in the extended device identifier, determine the uplink data.
- the device identifier included in the control section matches the extended device identifier.
- the device 500 further includes a second replacement unit 550, and the second replacement unit 550 is configured to:
- the data portion of the uplink data is subjected to a second identifier replacement process.
- the first identifier replacement process includes replacing the device identifier, the transport container identifier, and the port identifier with the corresponding extended device identifier, the extended transport container identifier, and the extended port, respectively.
- the identifier; the second identifier replacement process includes replacing the extended device identifier, the extended transport container identifier, and the extended port identifier with respective device identifiers, transport container identifiers, and port identifiers.
- the extended device identifier includes a downlink channel identifier DS-PON-ID indicating a downlink channel, and the device identifier ONU-ID indicating the terminal device, the extended transmission container identifier
- the downstream channel identifier is included and the transport container identifier ALLOC-ID indicating the transport container, the extended port identifier including the downstream channel identifier and the port identifier PORT-ID indicating the port.
- the apparatus 500 further includes: a third replacement unit 560, configured to use an extended device identifier, an extended transport container identifier, in the information sent to the terminal device.
- the extended port identifier are replaced with corresponding device identifiers, transport container identifiers, and port identifiers, respectively, and form downlink data;
- the sending unit 570 is configured to send the downlink data to the terminal device.
- the second replacement unit 550 includes: a first replacement subunit 551, configured to transmit the GTC to the uplink Gigabit passive optical network GPON in the uplink data.
- the first identifier replacement process is performed on the data portion of the PLOAM frame before the physical layer operation management in the uplink GTC frame is processed to maintain the data portion of the PLOAM frame;
- the second replacement sub-unit 552 is configured to perform a second identifier replacement process on the data portion of the PLOAM frame after processing the data portion of the PLOAM frame.
- the second replacing unit 550 further includes:
- a third replacement subunit 553 a gigabit passive optical network used for the uplink GTC frame
- the port identifier in the GEM frame is replaced with the extension port identifier.
- the second replacement unit 550 further includes: a fourth replacement subunit 554, configured to process an optical network unit ONU management and control interface carried by the GEM frame. Before the OMCI message, the first identifier replacement process is performed on the OMCI message; the fifth replacement sub-unit 555 is configured to perform the second identifier replacement process on the OMCI message after processing the OMCI message.
- the apparatus 500 may correspond to the optical line terminal OLT apparatus in the embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the apparatus 500 are respectively implemented in order to implement each of FIGS. 2 to 6
- the corresponding processes of the methods 100 to 300 are not described here.
- the device for converting the identifier of the terminal device in the embodiment of the present invention can replace the identifier of the terminal device, and can support the medium access control layer to the large branch than the passive optical network system, and can change the optical network unit without changing Or terminal, compatible with existing passive optical network standards, thereby increasing system capacity and reducing system cost.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.
- the components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
- the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium.
- a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a RAM (Random Access Memory), A variety of media that can store program code, such as a disk or an optical disk.
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Abstract
Disclosed are a method, device and system for converting terminal device identifiers. The method includes: receiving the uplink data sent from a terminal device, wherein the control part of the uplink data includes the device identifier indicating the terminal device; obtaining an extended device identifier corresponding to the uplink data according to the bandwidth authorization information corresponding to the uplink data; determining that the device identifier included in the control part of the uplink data matches the extended device identifier; and replacing the device identifier included in the control part of the uplink data with the extended device identifier. The method, device and system for converting terminal device identifiers in the embodiments of the present invention can enable the media access control layer to support the large branching ratio passive optical network system by replacing the terminal device identifier, and can improve the system capacity without making any change to the optical network unit or terminal, lowering the system costs.
Description
转换终端设备的标识符的方法、 装置和系统 技术领域 Method, device and system for converting an identifier of a terminal device
本发明涉及光通信领域, 尤其涉及光通信领域中转换终端设备的标识符 的方法、 装置和系统。 背景技术 The present invention relates to the field of optical communications, and more particularly to a method, apparatus and system for converting an identifier of a terminal device in the field of optical communications. Background technique
吉比特无源光网络( Gigabit Passive Optical Network , 筒称为 "GPON" ) 是一种点对多点 (Point To Multi point, 简称为 "P2MP" ) 的光纤接入网络, 它由局侧的光线路终端 ( Optical Line Terminal , 简称为 " OLT" )、 用户侧的 光网络单元( Optical Network Unit, 简称为 "ONU" )或者光网络终端 ONT ( Optical Network Terminal , 简称为 "ONT" ) 以及光分配网络 ( Optical Distribution Network, 筒称为 "ODN" )组成。 无源光网络 ( Passive Optical Network, 简称为 "PON" ) 系统主要采用了树型的拓朴结构。 The Gigabit Passive Optical Network (Gigabit Passive Optical Network) is a point-to-multipoint (P2MP) fiber access network. Optical Line Terminal ("OLT"), Optical Network Unit (ONU) or Optical Network Terminal (ONT) and optical distribution The network (Optical Distribution Network, called "ODN") is composed of a network. Passive Optical Network ("PON") system mainly adopts the tree topology.
在 PON系统中, OLT既提供网络侧接口, 又通过 PON侧接口与一个或 多个 ODN连接。 ODN采用无源光器件,用于连接 OLT设备和 ONU设备 /ONT 设备, 用于分发或复用 OLT和 ONU之间的数据信号。 ONU既提供用户侧 接口, 又通过 PON侧接口与 ODN相连。如果 ONU直接提供用户端口功能, 如个人计算机(Personal Computer, 筒称为 "PC" )上网用的以太网用户端 口, 则该 ONU可以称为 ONT。 如果无特殊说明, 下文中提到的 ONU将统 指 ONU或 ONT。 In a PON system, the OLT provides both a network-side interface and one or more ODNs through a PON-side interface. ODN uses passive optical components for connecting OLT devices and ONU devices/ONT devices for distributing or multiplexing data signals between the OLT and the ONU. The ONU provides both a user-side interface and an ODN through a PON-side interface. If the ONU directly provides a user port function, such as an Ethernet user port for a personal computer ("Personal Computer"), the ONU can be called an ONT. Unless otherwise stated, the ONUs mentioned below will be referred to as ONUs or ONTs.
在 GPON系统中,从 OLT到 ONU称为下行,下行采用 1490nm的波长, 由 OLT按照时分复用 (Time Division Multiplexing, 筒称为 "TDM" ) 方式 将下行数据流广播到所有 ONU, 各个 ONU只接收带有自身标识的数据。 反 之, 从 ONU到 OLT为上行, 上行采用 1310nm的波长。 由于各个 ONU共 享 ODN 和 OLT 设备, 为了保证各个 ONU 的上行数据不发生冲突, GPON/EPO 系统采用时分多址 (Time Division Multiple Access , 筒称为 "TDMA" )方式, 即通过 OLT为每个 ONU分配时隙, 各个 ONU必须严格 按照 OLT分配的时隙发送数据。 In the GPON system, the OLT to the ONU is called the downlink, and the downlink is the wavelength of 1490 nm. The OLT broadcasts the downlink data stream to all the ONUs according to the Time Division Multiplexing (TDM) method. Receive data with its own identity. Conversely, the uplink from the ONU to the OLT is at the wavelength of 1310 nm. In order to ensure that the uplink data of each ONU does not conflict, the GPON/EPO system adopts Time Division Multiple Access (TDMA), that is, the OLT is used for each ONU. Allocating time slots, each ONU must send data in strict accordance with the time slot allocated by the OLT.
GPON 协议是由 国 际 电信联盟远程通信标准化组 ( ITU The GPON protocol is established by the International Telecommunication Union Telecommunication Standardization Group (ITU)
Telecommunication Standardization Sector, 简称为 "ITU-T" ) G.984系列标准
定义, 其中 GPON的媒体接入控制(Media Access Control, 简称为 "MAC" ) 协议最大能够支持的 ONU-ID数、 ALLOC-ID数、 GEM ( GPON封装方法, Gigabit-capable Passive Optical Network Encapsulation Method , 简称为 "GEM" ) -PORT-ID数分别是 256、 4096、 4096。 Telecommunication Standardization Sector (referred to as "ITU-T") G.984 Series Standard Definition, where the number of ONU-IDs, the number of ALLOC-IDs, and the GEM (GPON-packable Passive Optical Network Encapsulation Method) that GPON's Media Access Control (MAC) protocol can support at most Referred to as "GEM") - The number of PORT-IDs is 256, 4096, and 4096, respectively.
为了增加 PON的容量, 业界提出在 GPON等 TDM-PON系统基础上, 利用波分复用 (Wavelength Division Multiplexing, 筒称为 "WDM" )和多级 分光技术, 将 TDM PON演进到支持大分支比的混合 PON ( Hybrid PON, 简 称 "HPON" ), 但在此过程中, 需要尽可能保护现有 TDM-PON系统的投资, 尽可能不改动现有 ODN或 ONU。 然而, 由于 GPON等现有 TDM-PON系 统的 MAC层协议能够支持的 ONU-ID、 ALLOC-ID, GEM-PORT-ID都非常 有限,如最多只能支持 256个 ONU-ID (包括广播 ID ),成为大分支比 HPON 技术在 MAC层支持更多 ONU的限制。 发明内容 In order to increase the capacity of PON, the industry proposes to evolve TDM PON to support large branch ratio based on TDM-PON system such as GPON, using Wavelength Division Multiplexing (WDM) and multi-level optical splitting technology. Hybrid PON (HPON), but in this process, it is necessary to protect the investment of the existing TDM-PON system as much as possible, and try not to change the existing ODN or ONU. However, due to the ONU-ID and ALLOC-ID that the MAC layer protocol of the existing TDM-PON system such as GPON can support, the GEM-PORT-ID is very limited. For example, it can only support up to 256 ONU-IDs (including broadcast ID). , becoming a larger branch than HPON technology supports more ONU restrictions at the MAC layer. Summary of the invention
本发明实施例提供了一种转换终端设备的标识符的方法和装置, 能够实 现媒体接入控制层对大分支比无源光网络系统的支持, 并能够不改动光网络 单元或终端。 The embodiment of the invention provides a method and a device for converting an identifier of a terminal device, which can implement support of a medium access control layer for a large branch than a passive optical network system, and can not change the optical network unit or the terminal.
一方面, 提供了一种转换终端设备的标识符的方法, 该方法包括: 接收 终端设备发送的上行数据, 该上行数据的控制部分包括指示该终端设备的设 备标识符; 根据与该上行数据对应的带宽授权信息, 获取与该上行数据相应 的扩展设备标识符; 确定该上行数据的控制部分包括的该设备标识符与该扩 展设备标识符相匹配; 将该上行数据的控制部分包括的该设备标识符替换为 该扩展设备标识符。 In one aspect, a method for converting an identifier of a terminal device is provided, the method comprising: receiving uplink data sent by a terminal device, where the control portion of the uplink data includes a device identifier indicating the terminal device; and corresponding to the uplink data Bandwidth authorization information, obtaining an extended device identifier corresponding to the uplink data; determining that the device identifier included in the control portion of the uplink data matches the extended device identifier; the device included in the control portion of the uplink data The identifier is replaced with the extension device identifier.
另一方面, 还提供了一种转换终端设备的标识符的装置, 该装置包括: 接收单元, 用于接收终端设备发送的上行数据, 该上行数据的控制部分包括 指示该终端设备的设备标识符; 获取单元, 用于根据与该上行数据对应的带 宽授权信息, 获取与该上行数据相应的扩展设备标识符; 确定单元, 用于确 定该接收单元接收的该上行数据的控制部分包括的该设备标识符与该获取 单元获取的该扩展设备标识符相匹配; 第一替换单元, 用于将该接收单元接 收的该上行数据的控制部分包括的该设备标识符替换为该获取单元获取的 该扩展设备标识符。
另一方面, 还提供了一种无源光网络系统, 包括: 光线路终端和多个光 网络单元, 所述光线路终端通过光分配网络连接到所述多个光网絡单元; 其 中, 所述光网络单元用于向所述光网络单元发送上行数据; 所述光线路终端 用于接收所述光网络单元发送的携带有指示所述光网络单元的设备标识符 的上行数据, 根据与所述上行数据对应的带宽授权信息, 获取与所述上行数 据相应的扩展设备标识符, 并在确定所述上行数据的携带的设备标识符与所 述扩展设备标识符相匹配时, 将所述上行数据携带的设备标识符替换为所述 扩展设备标识符。 In another aspect, there is provided an apparatus for converting an identifier of a terminal device, the apparatus comprising: a receiving unit, configured to receive uplink data sent by the terminal device, where the control part of the uplink data includes a device identifier indicating the terminal device And an obtaining unit, configured to acquire, according to the bandwidth authorization information corresponding to the uplink data, an extended device identifier corresponding to the uplink data, where the determining unit is configured to determine the device included in the control part of the uplink data received by the receiving unit The identifier is matched with the extended device identifier acquired by the acquiring unit; the first replacing unit is configured to replace the device identifier included in the control part of the uplink data received by the receiving unit with the extension acquired by the acquiring unit Device identifier. In another aspect, a passive optical network system is provided, including: an optical line terminal and a plurality of optical network units, wherein the optical line terminal is connected to the plurality of optical network units through an optical distribution network; The optical network unit is configured to send uplink data to the optical network unit, where the optical line terminal is configured to receive uplink data that is sent by the optical network unit and that carries a device identifier that indicates the optical network unit, according to And obtaining, by the bandwidth authorization information corresponding to the uplink data, an extended device identifier corresponding to the uplink data, and determining the uplink data when determining that the carried device identifier of the uplink data matches the extended device identifier The carried device identifier is replaced with the extended device identifier.
基于上述技术方案, 根据本发明实施例的转换终端设备的标识符的方 法、 装置和系统, 通过对终端设备的标识符进行替换, 能够实现媒体接入控 制层对大分支比无源光网络系统的支持, 并能够不改动光网络单元或终端, 与现有无源光网络标准兼容,从而能够提高系统的容量,并降低系统的成本。 附图说明 Based on the foregoing technical solution, a method, an apparatus, and a system for converting an identifier of a terminal device according to an embodiment of the present invention can implement a medium access control layer to a large branch ratio passive optical network system by replacing an identifier of the terminal device The support and ability to be compatible with existing passive optical network standards without changing optical network units or terminals can increase system capacity and reduce system cost. DRAWINGS
为了更清楚地说明本发明实施例的技术方案, 下面将对本发明实施例中 所需要使用的附图作简单地介绍, 显而易见地, 下面所描述的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。 In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.
图 1是本发明实施例 ODSM-PON系统的网络架构示意图。 1 is a schematic diagram of a network architecture of an ODSM-PON system according to an embodiment of the present invention.
图 2是根据本发明实施例的转换终端设备的标识符的方法的示意性流程 图。 2 is a schematic flow chart of a method of converting an identifier of a terminal device according to an embodiment of the present invention.
图 3是根据本发明实施例的扩展标识符的示意性结构图。 FIG. 3 is a schematic structural diagram of an extended identifier according to an embodiment of the present invention.
图 4是根据本发明另一实施例的转换终端设备的标识符的方法的示意性 流程图。 4 is a schematic flow chart of a method of converting an identifier of a terminal device according to another embodiment of the present invention.
图 5是根据本发明实施例的转换 HPON系统中的终端设备的标识符的方 法的示意性流程图。 Figure 5 is a schematic flow chart of a method of converting an identifier of a terminal device in an HPON system according to an embodiment of the present invention.
图 6是根据本发明再一实施例的转换终端设备的标识符的方法的示意性 流程图。 Figure 6 is a schematic flow chart of a method of converting an identifier of a terminal device in accordance with still another embodiment of the present invention.
图 7 是根据本发明实施例的转换终端设备的标识符的装置的示意性框 图。 Fig. 7 is a schematic block diagram of an apparatus for converting an identifier of a terminal device according to an embodiment of the present invention.
图 8是根据本发明实施例的获取单元的示意性框图。
图 9是根据本发明另一实施例的转换终端设备的标识符的装置的示意性 框图。 FIG. 8 is a schematic block diagram of an acquisition unit according to an embodiment of the present invention. FIG. 9 is a schematic block diagram of an apparatus for converting an identifier of a terminal device according to another embodiment of the present invention.
图 10是根据本发明实施例的第二替换单元的示意性框图。 具体实施方式 Figure 10 is a schematic block diagram of a second replacement unit in accordance with an embodiment of the present invention. detailed description
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例是本发明的一部分实施例, 而不 是全部实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创 造性劳动的前提下所获得的所有其他实施例, 都应属于本发明保护的范围。 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.
应当理解, 本发明实施例的技术方案可以应用于各种光通信系统, 例如 It should be understood that the technical solutions of the embodiments of the present invention can be applied to various optical communication systems, for example,
GPON、 EPON、 10G-GPON, 10G-EPON、 ODSM-PON、 TWDM-PON等无 源光网絡系统。 为了描述方便, 下述实施例将以基于 GPON的 HPON系统 为例, 并且以包括 ONU和 ONT的终端设备以及包括 OLT的网络侧设备为 例进行说明, 但本发明实施例并不限于此。 Non-source optical network systems such as GPON, EPON, 10G-GPON, 10G-EPON, ODSM-PON, TWDM-PON. For the convenience of description, the following embodiments will be described by taking a GPON-based HPON system as an example, and the terminal device including the ONU and the ONT and the network side device including the OLT are taken as an example, but the embodiment of the present invention is not limited thereto.
例如, 在一种实施例中, HPON系统可以是采用动态光谱管理( Optical For example, in one embodiment, the HPON system may be dynamic spectrum management (Optical
Dynamic Spectrum Management, 简称为 "ODSM" )技术的 ODSM-PON系 统。 请参阅图 1, 在 ODSM-PON系统中, ODN可以采用两级分光, 第一级 是混合光复用器, 第二级是无源分光器件。 下面以上行、 下行各采用四对波 长的情况来说明。从 OLT到 ONU称为下行,下行采用四个波长,并以 WDM 方式共存; ONU根据下行波长分成四组, 在每个下行波长上, OLT以 TDM 方式将下行数据流广播到所有对应接收波长的 ONU,但各 ONU只接收带有 自身标识的数据。 反之, 从 ONU到 OLT为上行, OLT釆用可调解复用器 ( Demultiplexer, 筒称为 "DEMUX" )将上行波长划分为四个通道, 每个通 道由一个接收机接收, 不同上行通道内的 ONU以 WDM方式共存。 为了保 证同一上行通道内的各个 ONU的上行信号不发生冲突, 各个 ONU在该上 行通道内采用 TDMA方式, 即通过 OLT为通道内的每个 ONU分配时隙, 各个 ONU必须严格按照 OLT分配的时隙发送数据。 Dynamic Spectrum Management, referred to as "ODSM" technology, is the ODSM-PON system. Referring to Figure 1, in the ODSM-PON system, the ODN can use two-stage splitting, the first stage is a hybrid optical multiplexer, and the second stage is a passive optical splitting device. The following lines and downlinks are illustrated by four pairs of wavelengths. The OLT to the ONU is called downlink, the downlink uses four wavelengths, and coexists in WDM mode. The ONU is divided into four groups according to the downlink wavelength. On each downstream wavelength, the OLT broadcasts the downlink data stream to all corresponding receiving wavelengths in TDM mode. ONU, but each ONU only receives data with its own identity. Conversely, from the ONU to the OLT for uplink, the OLT uses a multiplexer (Demultiplexer, called "DEMUX") to divide the upstream wavelength into four channels, each channel is received by one receiver, in different uplink channels. ONUs coexist in WDM mode. In order to ensure that the uplink signals of the ONUs in the same uplink channel do not collide, each ONU adopts the TDMA mode in the uplink channel, that is, the OLT allocates time slots for each ONU in the channel, and each ONU must strictly allocate according to the OLT. The slot sends data.
在下行方向上, OLT的四个发射机 Txl~Tx4发射的连续信号光通过复 用器( Multiplexer, 简称为 "MUX" )和 WDM器件耦合后输出到 ODN的主 干光纤, 经主干光纤传输后到达混合装置(Hybrid-Box), 在 Hybrid- Box内, 经 WDM耦合器分波后,通过掺铒光纤放大器( Erbium-doped Optical Fiber
Amplifier, 筒称 "EDFA" )进行放大, 然后经另一个 MUX解复用之后耦合 进入分支光纤, 经分支光纤传输到第二级无源光分路器, 再经入户光纤传输 到各个 ONU。 在上行方向上, ONU发射的突发光信号经入户光纤由第二级 无源光分路器耦合进分支光纤, 经分支光纤后进入 Hybrid-Box, 经 WDM器 件分波后由无源光分路器耦合后, 通过半导体光放大器 ( Semiconductor Optical Amplifier, 简称 "SOA" )放大后经 WDM器件进入主干光纤, 经主 千光纤传输后到达 OLT, 经 OLT内部的 WDM器件和可调 DEMUX后, 分 别由四个接收机 RxA~RxD接收。 In the downstream direction, the continuous signal light emitted by the four transmitters Txl~Tx4 of the OLT is coupled to the WDM device through a multiplexer (multiplexer, referred to as "MUX") and output to the backbone fiber of the ODN, and then transmitted to the hybrid fiber through the backbone fiber. Hybrid-Box, in the Hybrid-Box, is split by a WDM coupler and passed through an erbium-doped optical fiber (Erbium-doped Optical Fiber) The Amplifier, the tube is called "EDFA", is amplified, and then demultiplexed by another MUX, coupled into the branch fiber, transmitted to the second-stage passive optical splitter via the branch fiber, and transmitted to each ONU through the incoming fiber. In the uplink direction, the burst optical signal transmitted by the ONU is coupled into the branch fiber through the second-stage passive optical splitter through the second-stage passive optical splitter, and enters the Hybrid-Box after branching the optical fiber, and is separated by the WDM device. After the splitter is coupled, it is amplified by a semiconductor optical amplifier ("SOA") and then enters the trunk fiber through the WDM device, and then transmitted to the OLT through the main kilofiber, after the WDM device inside the OLT and the adjustable DEMUX. Received by four receivers RxA~RxD respectively.
若 ODSM-PON系统在 GPON的基础上实现,按照现有的硬件处理能力, 可以做到上行、 下行共 16对(甚至更多)波长, 由此可以支持 1024个甚至 更多的 ONU, 即可以做到 1: 1024 (甚至更高) 的分支比。 If the ODSM-PON system is implemented on the basis of GPON, according to the existing hardware processing capability, a total of 16 pairs (or even more) of wavelengths can be achieved in the uplink and downlink, thereby supporting 1024 or more ONUs, that is, Do 1: Branch ratio of 1024 (or even higher).
ODSM-PON采用 WDM和 TDM技术, 可以保持现有 ODN和 ONU不 变, 在提升带宽的同时可以大幅降低 PON 系统的部署和运维成本, 保护现 有投资, 是现有 PON演进的技术方向之一。 当然, 应当理解, 本发明实施 例提供的方案还可以适用于其他基于 TDM-PON (比如 EPON或者 GPON ) 的 HPON系统。 ODSM-PON adopts WDM and TDM technology, which can keep the existing ODN and ONU unchanged. It can greatly reduce the deployment and operation and maintenance cost of the PON system while protecting the bandwidth, and protect the existing investment. It is the technical direction of the existing PON evolution. One. Of course, it should be understood that the solution provided by the embodiments of the present invention can also be applied to other HPON systems based on TDM-PON (such as EPON or GPON).
图 2示出了根据本发明实施例的转换终端设备的标识符的方法 100的示 意性流程图。 如图 2所示, 该方法 100包括: 2 shows a schematic flow diagram of a method 100 of converting an identifier of a terminal device in accordance with an embodiment of the present invention. As shown in FIG. 2, the method 100 includes:
S110, 局端设备接收终端设备发送的上行数据, 该上行数据的控制部分 包括指示该终端设备的设备标识符; S110. The central office device receives uplink data sent by the terminal device, where the control part of the uplink data includes a device identifier indicating the terminal device.
S120, 局端设备根据与该上行数据对应的带宽授权信息, 获取与该上行 数据相应的扩展设备标识符; S120. The central office device acquires an extended device identifier corresponding to the uplink data according to the bandwidth authorization information corresponding to the uplink data.
S130,局端设备确定该上行数据的控制部分包括的该设备标识符与该扩 展设备标识符相匹配; S130. The central office device determines that the device identifier included in the control part of the uplink data matches the extended device identifier.
S140,局端设备将该上行数据的控制部分包括的该设备标识符替换为该 扩展设备标识符。 S140. The central office device replaces the device identifier included in the control part of the uplink data with the extended device identifier.
在具体实施例中, 局端设备跟终端设备可以分别是光线路终端 OLT和 光网络单元 ONU。 OLT在接收到 ONU发送的上行数据时, 可以根据与该上 行数据相应的带宽授权信息, 获取与该上行数据相应的扩展设备标识符, 并 且在确定该上行数据的控制部分包括的设备标识符与该扩展设备标识符相 匹配时, 将该上行数据的控制部分包括的该设备标识符替换为该扩展设备标
识符。 In a specific embodiment, the central office device and the terminal device may be an optical line terminal OLT and an optical network unit ONU, respectively. When receiving the uplink data sent by the ONU, the OLT may acquire the extended device identifier corresponding to the uplink data according to the bandwidth authorization information corresponding to the uplink data, and determine the device identifier included in the control part of the uplink data. When the extended device identifier matches, the device identifier included in the control portion of the uplink data is replaced with the extended device identifier Identification.
因此, 本发明实施例的转换终端设备的标识符的方法, 通过对终端设备 的标识符进行替换, 能够支持更多数量的终端设备, 以实现在媒体接入控制 层对大分支比无源光网絡系统的支持, 并能够不改动 ONU, 与现有无源光 网络标准兼容, 从而能够提高系统的容量, 并降低系统的成本。 Therefore, the method for converting the identifier of the terminal device in the embodiment of the present invention can support a larger number of terminal devices by replacing the identifier of the terminal device, so as to achieve greater branch-to-passive light at the medium access control layer. Supported by the network system, and able to be compatible with existing passive optical network standards without changing the ONU, thereby increasing the capacity of the system and reducing the cost of the system.
具体地, 为了解决 PON 系统的 MAC 层支持超量 ONU、 传输容器 ( Transmission Container, 简称为 " T-CONT " )、 GPON 封装方法端口 ( Gigabit- capable Passive Optical Network Encapsulation Method Port, 简称为 " GEM-PORT" ) 而又不改动 ONU , 本发明实施例可以采用如下方案: 在 OLT内部以扩展的 ONU-ID、 扩展的 ALLOC-ID和扩展的 GEM-PORT-ID来 分别标记 ONU、 T-CONT、 GEM-PORT, 而在 ONU仍以原来的 ONU-ID、 ALLOC-ID和 GEM-PORT-ID来分别标记 ONU、 T-CONT, GEM-PORT, 另 夕卜, OLT在上行接收时可以根据带宽映射( Bandwidth Map,筒称 "BWMAP" ) 和 ONU分组映射表进行上述 ID转换, 而在下行发送时根据 ONU分组映射 表进行上述 ID转换。 Specifically, in order to solve the problem that the MAC layer of the PON system supports the excess ONU, the Transmission Container (T-CONT), and the Gigabit-capable Optical Network Encapsulation Method Port (GEM-GEM- PORT") without changing the ONU, the embodiment of the present invention may adopt the following scheme: respectively, the ONU, the T-CONT, and the extended ONU-ID, the extended ALLOC-ID, and the extended GEM-PORT-ID are respectively marked in the OLT. GEM-PORT, while the ONU still marks the ONU, T-CONT, and GEM-PORT with the original ONU-ID, ALLOC-ID, and GEM-PORT-ID. In addition, the OLT can map according to the bandwidth when receiving the uplink. (Bandwidth Map, "BWMAP") and the ONU packet mapping table perform the above ID conversion, and the ID conversion is performed according to the ONU packet mapping table at the time of downlink transmission.
因此, 本发明实施例的技术方案可以保持 ONU不变, OLT与 ONU交 互协议流程不变, OLT与 ONU之间的帧结构不变, 即本发明实施例的技术 方案能够与现有 PON标准兼容, 可以尽量重用现有的 ONU设备, 可以使 OLT实现对大分支比 PON系统的支持, 并且能够使得 MAC层重用度高, 因而还能够提高系统的容量, 并降低系统的成本。 Therefore, the technical solution of the embodiment of the present invention can keep the ONU unchanged, the OLT and the ONU interaction protocol process is unchanged, and the frame structure between the OLT and the ONU is unchanged, that is, the technical solution of the embodiment of the present invention can be compatible with the existing PON standard. The existing ONU equipment can be reused as much as possible, and the OLT can support the large branch than the PON system, and can make the MAC layer reusable, thereby increasing the capacity of the system and reducing the cost of the system.
在本发明实施例中, 在 OLT 的 MAC 内部, 以扩展设备标识符 NEW-ONU-ID作为接入到 PON系统的 ONU的唯一标记, 以扩展传输容器 标识符 NEW- ALLOC-ID作为 PON系统内部 T-CONT的唯一标记, 以扩展 端口标识符 NEW-PORT-ID作为 PON系统内部 GEM-PORT的唯一标记。 In the embodiment of the present invention, within the MAC of the OLT, the extended device identifier NEW-ONU-ID is used as the unique identifier of the ONU connected to the PON system, and the transmission container identifier NEW-ALLOC-ID is extended as the internal PON system. The unique tag of the T-CONT, with the extended port identifier NEW-PORT-ID as the unique tag for the GEM-PORT within the PON system.
可选地, 该扩展设备标识符 NEW-ONU-ID包括指示下行通道的下行通 道标识符 DS-PON-ID, 以及指示终端设备的设备标识符 ONU-ID, 并且在同 一下行通道的所有 ONU-ID 是唯一的; 该扩展传输容器标识符 NEW- ALLOC-ID包括该下行通道标识符 DS-PON-ID以及指示传输容器的该 传输容器标识符 ALLOC-ID,并且在同一下行通道的所有 ALLOC-ID是唯一 的; 该扩展端口标识符 NEW-PORT-ID 包括该下行通道标识符 DS-PON-ID 以及指示端口的该端口标识符 PORT-ID , 并且在同一下行通道的所有
PORT-ID是唯一的。 Optionally, the extended device identifier NEW-ONU-ID includes a downlink channel identifier DS-PON-ID indicating a downlink channel, and a device identifier ONU-ID indicating the terminal device, and all ONUs in the same downlink channel The ID is unique; the extended transport container identifier NEW-ALLOC-ID includes the downstream channel identifier DS-PON-ID and the transport container identifier ALLOC-ID indicating the transport container, and all ALLOCs in the same downstream channel The ID is unique; the extended port identifier NEW-PORT-ID includes the downstream channel identifier DS-PON-ID and the port identifier PORT-ID indicating the port, and all of the same downstream channel The PORT-ID is unique.
例如在 HP0N中, 每个 0NU只能接收一个下行波长的信息, 每个下行 波长对应一部分 0NU, 比如, 属于同个 P0N分支的 0NU子集, 其中, 不 同的 P0N分支分别对应于不同的下行波长通道,且可以通过不同的 PON-ID 进行标识。 因此, 如图 3所示, 扩展设备标识符 NEW-ONU-ID可以包括两 部分, 前一部分是下行通道标识符 DS-PON-ID , 后一部分是只能接收该 DS-PON-ID对应下行波长的 ONU的设备标识符 ONU-ID。 而且后一部分的 设备标识符 ONU-ID的定义和功能描述符合现有标准的定义和功能描述,如 ONU-ID等于 255作为广播 ID。 For example, in HP0N, each ONU can only receive one downlink wavelength information, and each downlink wavelength corresponds to a part of ONU, for example, a 0NU subset belonging to the same P0N branch, where different P0N branches respectively correspond to different downstream wavelengths. Channels, and can be identified by different PON-IDs. Therefore, as shown in FIG. 3, the extended device identifier NEW-ONU-ID may include two parts, the former part is a downlink channel identifier DS-PON-ID, and the latter part is only capable of receiving the downlink wavelength corresponding to the DS-PON-ID. The ONU's device identifier ONU-ID. Moreover, the definition and function description of the device identifier ONU-ID in the latter part conforms to the definition and function description of the existing standard, such as the ONU-ID is equal to 255 as the broadcast ID.
同理, 扩展传输容器标识符 NEW-ALLOC-ID可以包括下行通道标识符 Similarly, the extended transport container identifier NEW-ALLOC-ID can include the downstream channel identifier.
DS-PON-ID 和该 DS-PON-ID 对应的 ONU 子集内的传输容器标识符 ALLOC-ID; 扩展端口标识符 NEW-PORT-ID 可以包括下行通道标识符 DS-PON-ID和该 DS-PON-ID对应的 ONU子集内的端口标识符 PORT-ID。 DS-PON-ID and the transport container identifier ALLOC-ID in the ONU subset corresponding to the DS-PON-ID; the extended port identifier NEW-PORT-ID may include the downlink channel identifier DS-PON-ID and the DS - The port identifier PORT-ID in the ONU subset corresponding to the PON-ID.
DS-PON-ID为全 1 (指二进制, 如 OxFF )表示在所有下行波长上广播。 如果 NEW-ONU-ID 的 DS-PON-ID部分为全 1 (指二进制, 如 OxFF ), 而 ONU-ID部分是单个 ONU的 ID, 则对所有下行波长上与所述 ONU-ID相同 的 ONU进行组播; 如果 ONU-ID部分是广播 ID, 即为全 1 (指二进制, 如 OxFF ), 则对所有 ONU进行广播。 如果 NEW-ONU-ID的 DS-PON-ID为单 个下行波长 ID, 而 ONU-ID部分是广播 ID, 则对该 DS-PON-ID对应的所有 ONU进行组播。 NEW-ALLOC-ID和 NEW-PORT-ID同理不再赘述。 The DS-PON-ID is all 1 (referring to binary, such as OxFF) indicating broadcast on all downstream wavelengths. If the DS-PON-ID part of the NEW-ONU-ID is all 1 (referring to binary, such as OxFF), and the ONU-ID part is the ID of a single ONU, the same ONU as the ONU-ID on all downlink wavelengths is used. Multicast; If the ONU-ID part is a broadcast ID, that is, all 1s (referred to as binary, such as OxFF), all ONUs are broadcast. If the DS-PON-ID of the NEW-ONU-ID is a single downlink wavelength ID and the ONU-ID part is a broadcast ID, all ONUs corresponding to the DS-PON-ID are multicast. The details of NEW-ALLOC-ID and NEW-PORT-ID will not be described again.
在 ONU-ID分配过程中, OLT只需保证分配给同一下行波长的 ONU子 集内的 ONU-ID是唯一的, 同理 ALLOC-ID、 PORT-ID在同一下行波长的 ONU 子集内是唯一的。 这也意味着, 不同的下行波长的 ONU 子集内的 ONU-ID有可能是相同的。 During the ONU-ID allocation process, the OLT only needs to ensure that the ONU-IDs assigned to the ONU subset of the same downstream wavelength are unique. Similarly, the ALLOC-ID and PORT-ID are unique within the ONU subset of the same downstream wavelength. of. This also means that the ONU-IDs in the ONU subsets of different downstream wavelengths may be the same.
应理解, 本发明实施例以图 3为例进行说明, 但本发明实施例并不限于 此, 例如, 下行通道标识符 DS-PON-ID和扩展后的标识符可以具有更大的 长度, 例如, 扩展后的标识符可以用于指示终端设备、 传输容器和端口中的 任一种, 以及用于指示下行通道, 并且扩展后的标识符不限于下行通道标识 符与设备标识符、 原传输容器标识符或端口标识符的组合。 It should be understood that the embodiment of the present invention is illustrated by using FIG. 3 as an example, but the embodiment of the present invention is not limited thereto. For example, the downlink channel identifier DS-PON-ID and the extended identifier may have a larger length, for example, The extended identifier may be used to indicate any one of a terminal device, a transport container, and a port, and to indicate a downlink channel, and the extended identifier is not limited to the downlink channel identifier and the device identifier, the original transport container. A combination of identifiers or port identifiers.
在 S110中, OLT装置接收终端设备 ONU发送的上行数据,该上行数据 可携带有控制信息, 所述控制信息可以包括指示该终端设备的设备标识符
ONU-ID。 In S110, the OLT device receives uplink data sent by the terminal device ONU, where the uplink data may carry control information, where the control information may include a device identifier indicating the terminal device. ONU-ID.
在 S120中, 可选地, OLT可以从带宽授权信息中获取与该上行数据对 应的扩展传输容器标识符; 并根据在 ONU注册阶段生成的终端设备分组映 射表, 获取与该扩展传输容器标识符相应的扩展设备标识符。 其中, 该终端 设备分组映射表可以包括下行通道标识符、 上行通道标识符、 设备标识符、 传输容器标识符、 端口标识符、 扩展设备标识符、 扩展传输容器标识符和扩 展端口标识符之间的对应关系。 In S120, optionally, the OLT may acquire an extended transport container identifier corresponding to the uplink data from the bandwidth grant information; and obtain the extended transport container identifier according to the terminal device group mapping table generated in the ONU registration phase. The corresponding extended device identifier. The terminal device group mapping table may include a downlink channel identifier, an uplink channel identifier, a device identifier, a transport container identifier, a port identifier, an extended device identifier, an extended transport container identifier, and an extended port identifier. Correspondence.
应理解, 在 GPON中, 带宽授权信息以带宽映射图 ( Bandwidth Map , 简称为 "BWMAP" )的形式下发给 ONU, BWMAP的格式和字段含义在 ITU-T G.984.3中有定义, 在此不再赘述。 It should be understood that in GPON, the bandwidth authorization information is sent to the ONU in the form of a bandwidth map (BWMAP), and the format and field meaning of the BWMAP are defined in ITU-T G.984.3. No longer.
在 HPON的 OLT中, BWMAP中使用扩展传输容器标识符替代传输容 器标识符, 其余字段的格式和含义仍然沿用 GPON标准的定义; 而在 ONU 中, BWMAP的格式和含义完全沿用 GPON标准的定义。 In the HPON OLT, the extended transport container identifier is used in the BWMAP instead of the transport container identifier. The format and meaning of the remaining fields are still defined by the GPON standard. In the ONU, the format and meaning of the BWMAP are completely defined by the GPON standard.
例如, 表 1示出了 ONU在注册阶段形成的 ONU分组映射表。 该 ONU 分组映射表包括下行通道标识符 DS-PON-ID、上行通道标识符 US-PON-ID、 设备标识符 ONU-ID, 传输容器标识符 ALLOC-ID、 端口标识符 PORT-ID、 扩展设备标识符 NEW-ONU-ID、扩展传输容器标识符 NEW-ALLOC-ID和扩 展端口标识符 NEW-PORT-ID之间的对应关系。 For example, Table 1 shows the ONU packet mapping table formed by the ONU during the registration phase. The ONU packet mapping table includes a downlink channel identifier DS-PON-ID, an uplink channel identifier US-PON-ID, a device identifier ONU-ID, a transport container identifier ALLOC-ID, a port identifier PORT-ID, an extension device The correspondence between the identifier NEW-ONU-ID, the extended transport container identifier NEW-ALLOC-ID, and the extended port identifier NEW-PORT-ID.
表 1 Table 1
应理解, 在 ODSM-PON、 TWDM-PON等 HPON系统中, 上行和下行 都可能采用多个波长, ONU 上线之前与上行和下行波长的映射关系可能是 不确定的。 因此,在本发明实施例中, ONU-ID、 ALLOC-ID、 GEM-PORT-ID 与 OLT发射机和接收机的映射关系可以通过以下两种方法来建立, 以解决 ONU自动发现、 测距、 上行带宽分配、 上下行流量的路由问题。 It should be understood that in HPON systems such as ODSM-PON and TWDM-PON, multiple wavelengths may be used for both uplink and downlink. The mapping relationship between the ONU and the upstream and downstream wavelengths before the ONU is online may be uncertain. Therefore, in the embodiment of the present invention, the mapping relationship between the ONU-ID, the ALLOC-ID, and the GEM-PORT-ID and the OLT transmitter and the receiver can be established by the following two methods to solve the ONU automatic discovery, ranging, and Uplink bandwidth allocation, routing of upstream and downstream traffic.
一种方法是 OLT在每个下行波长顺序启动 ONU自动发现过程, 同一个
下行波长 ONU为一个子集, 0LT在 0NU响应时建立 ONU等与 OLT的接 收机和发射机之间的对应关系。 另一种方法是 OLT在所有下行波长并行启 动自动发现过程, 在下行消息中添加 OLT发射机的编号并在上行消息中发 回给 OLT, 使 OLT建立 ONU与 OLT的接收机和发射机之间的对应关系。 由此形成如表 1所示的 ONU分组映射表。 One method is that the OLT sequentially starts the ONU automatic discovery process at each downstream wavelength, the same The downlink wavelength ONU is a subset, and the 0LT establishes a correspondence relationship between the ONU and the like and the receiver and the transmitter of the OLT when the 0NU responds. Another method is that the OLT starts the automatic discovery process in parallel on all downlink wavelengths, adds the number of the OLT transmitter in the downlink message, and sends it back to the OLT in the uplink message, so that the OLT establishes the ONU and the receiver and the transmitter of the OLT. Correspondence. Thus, an ONU packet mapping table as shown in Table 1 is formed.
在 S130中, 可选地, OLT装置在该上行数据的控制部分包括的设备标 识符 ONU-ID 与该扩展设备标识符 NEW-ONU-ID 包括的设备标识符 ONU-ID相同时, 确定该上行数据的控制部分包括的设备标识符 ONU-ID与 该扩展设备标识符 NEW-ONU-ID相匹配。 In S130, optionally, when the device identifier ONU-ID included in the control part of the uplink data is the same as the device identifier ONU-ID included in the extended device identifier NEW-ONU-ID, the OLT device determines the uplink. The device identifier ONU-ID included in the control portion of the data matches the extended device identifier NEW-ONU-ID.
在 S140中, OLT将该上行数据的控制部分包括的该设备标识符 ONU-ID 替换为该扩展设备标识符 NEW-ONU-ID。 In S140, the OLT replaces the device identifier ONU-ID included in the control portion of the uplink data with the extended device identifier NEW-ONU-ID.
因此, 本发明实施例的转换终端设备的标识符的方法, 通过对终端设备 的标识符进行替换, 能够实现媒体接入控制层对大分支比无源光网络系统的 支持, 并能够不改动光网络单元或终端, 与现有无源光网络标准兼容, 从而 能够提高系统的容量, 并降低系统的成本。 Therefore, the method for converting the identifier of the terminal device in the embodiment of the present invention, by replacing the identifier of the terminal device, enables the medium access control layer to support the large branch than the passive optical network system, and can change the light without changing the light. The network unit or terminal is compatible with existing passive optical network standards, thereby increasing system capacity and reducing system cost.
如前所述, OLT 装置内部以扩展后的标识符 NEW-ONU-ID、 NEW-ALLOC-ID和 NEW-PORT-ID对 ONU、 T-CONT、 GEM-PORT进行标 记, 而 ONU内部是以原标识符 ONU-ID、 ALLOC-ID和 PORT-ID对 ONU、 T-CONT、 GEM-PORT进行标记的。 因此, 可以在 OLT内部进行 ID转换, 使 OLT与 ONU之间的消息传递机制能够正常进行。 As described above, the ONU, T-CONT, and GEM-PORT are marked internally by the OLT device with the extended identifiers NEW-ONU-ID, NEW-ALLOC-ID, and NEW-PORT-ID, and the ONU is internally The identifiers ONU-ID, ALLOC-ID, and PORT-ID mark the ONU, T-CONT, and GEM-PORT. Therefore, ID conversion can be performed inside the OLT, so that the message transfer mechanism between the OLT and the ONU can be performed normally.
因此, 如图 4所示, 根据本发明实施例的转换终端设备的标识符的方法 100还可以包括: Therefore, as shown in FIG. 4, the method 100 for converting an identifier of a terminal device according to an embodiment of the present invention may further include:
S150, OLT装置在处理该上行数据的数据部分之前, 对该上行数据的数 据部分进行第一标识符替换处理; S150. The OLT device performs a first identifier replacement process on the data portion of the uplink data before processing the data portion of the uplink data.
S160, OLT装置在处理该上行数据的数据部分之后, 对该上行数据的数 据部分进行第二标识符替换处理。 S160. After processing the data portion of the uplink data, the OLT device performs a second identifier replacement process on the data portion of the uplink data.
在本发明实施例中, 该第一标识符替换处理包括将设备标识符、 传输容 器标识符和端口标识符分别替换为相应的扩展设备标识符、扩展传输容器标 识符和扩展端口标识符; 该第二标识符替换处理包括将扩展设备标识符、 扩 展传输容器标识符和扩展端口标识符分别替换为相应的设备标识符、传输容 器标识符和端口标识符。
在本发明实施例中, 该扩展设备标识符包括指示下行通道的下行通道标 识符 DS-PON-ID, 以及指示终端设备的该设备标识符 ONU-ID; 该扩展传输 容器标识符包括该下行通道标识符以及指示传输容器的该传输容器标识符 ALLOC-ID; 该扩展端口标识符包括该下行通道标识符以及指示端口的该端 口标识符 PORT-ID。 In an embodiment of the present invention, the first identifier replacement process includes replacing the device identifier, the transport container identifier, and the port identifier with a corresponding extended device identifier, an extended transport container identifier, and an extended port identifier, respectively; The second identifier replacement process includes replacing the extended device identifier, the extended transport container identifier, and the extended port identifier with respective device identifiers, transport container identifiers, and port identifiers. In an embodiment of the present invention, the extended device identifier includes a downlink channel identifier DS-PON-ID indicating a downlink channel, and the device identifier ONU-ID indicating the terminal device; the extended transmission container identifier includes the downlink channel An identifier and the transport container identifier ALLOC-ID indicating the transport container; the extended port identifier including the downstream channel identifier and the port identifier PORT-ID indicating the port.
下面将结合图 5, 以基于 GPON的 HPON系统为例, 对根据本发明实施 例的上行数据的处理进行详细地描述。 The processing of uplink data according to an embodiment of the present invention will be described in detail below with reference to FIG. 5, taking a GPON-based HPON system as an example.
如图 5所示,根据本发明实施例的转换 HPON系统中的终端设备的标识 符的方法 200包括: As shown in FIG. 5, a method 200 for converting an identifier of a terminal device in an HPON system according to an embodiment of the present invention includes:
S210, OLT装置在接收 载有上行数据的上行吉比特无源光网络 GPON 传输匚聚 ( Gigabit-capable passive optical network Transmission Convergence , 简称为 "GTC" )帧,在处理该上行 GTC帧中的物理层操作管理维护( Physical Layer Operations Administration and Maintenance , 筒称为 "PLOAM" ) †贞的 数据部分之前, 对该 PLOAM帧的数据部分进行第一标识符替换处理; S210, the OLT device receives a Gigabit-capable passive optical network transmission convergence (GTC) frame carrying uplink data, and processes the physical layer in the uplink GTC frame. Before the data portion of the Physical Layer Operations Administration and Maintenance ("PLOAM") is processed, the first identifier replacement processing is performed on the data portion of the PLOAM frame;
S220, OLT装置在处理该 PLOAM帧的数据部分之后, 对该 PLOAM帧 的数据部分进行第二标识符替换处理; 法 ( Gigabit-capable passive optical network Encapsulation Method, 简称为 "GEM" ) 帧, OLT装置将该 GEM帧中的端口标识符替换为该扩展端口标 识符; S220, after processing the data part of the PLOAM frame, performing a second identifier replacement processing (Gigabit-capable passive optical network Encapsulation Method, referred to as "GEM") frame, the OLT device Replace the port identifier in the GEM frame with the extended port identifier;
S240, OLT装置在处理该 GEM帧承载的光网络单元 ONU管理和控制 接口 ( Optical Network Unit Management and Control Interface, 简称为 "OMCI" )报文的数据部分之前,对该 OMCI报文进行第一标识符替换处理; S250, OLT装置在处理该 OMCI报文之后, 对该 OMCI报文进行该第 二标识符替换处理。 S240. The OLT device performs the first identifier on the OMCI packet before processing the data part of the Optical Network Unit Management and Control Interface (OMCI) packet of the optical network unit that is carried by the GEM frame. S250, after the OLT device processes the OMCI message, performing the second identifier replacement process on the OMCI message.
应理解, 上述各过程的序号的大小并不意味着执行顺序的先后, 各过程 的执行顺序应以其功能和内在逻辑确定, 而不应对本发明实施例的实施过程 构成任何限定。 It should be understood that the size of the sequence numbers of the above processes does not imply a sequence of executions, and the order of execution of the processes should be determined by its function and internal logic, and should not be construed as limiting the implementation process of the embodiments of the present invention.
具体而言, 在上行方向, 上行 GTC接收模块根据 B WMAP的扩展传输 容器标识符 NEW- ALLOC-ID信息、 开始时间和停止时间信息接收 ONU的 上行 GTC帧 (如 S110所示); 上行 GTC接收模块根据 ONU分组映射表查
找 BWMAP中与该扩展传输容器标识符 NEW-ALLOC-ID对应的扩展设备标 识符 NEW-ONU-ID (如 S120所示), 并将扩展设备标识符 NEW-ONU-ID的 ONU-ID部分与上行 GTC帧中的 ONU-ID字段进行比较, 如果相匹配则说 明该 ONU的上行传输是符合 OLT的带宽分配授权的(如 S130所示 ), 进行 下一步处理, 否则丟弃, 并产生告警; 接着, 上行 GTC接收模块将符合的 上行 GTC 帧头部的设备标识符 ONU-ID 替换成对应的扩展设备标识符 NEW-ONU-ID (如 S140所示)。 Specifically, in the uplink direction, the uplink GTC receiving module receives the uplink GTC frame of the ONU according to the extended transmission container identifier NEW-ALLOC-ID information, the start time, and the stop time information of the B WMAP (as shown in S110); the uplink GTC receiving The module checks according to the ONU group mapping table. Find the extended device identifier NEW-ONU-ID corresponding to the extended transport container identifier NEW-ALLOC-ID in the BWMAP (as shown in S120), and expand the ONU-ID portion of the device identifier NEW-ONU-ID with The ONU-ID field in the uplink GTC frame is compared. If the matching is performed, the uplink transmission of the ONU is in accordance with the bandwidth allocation authorization of the OLT (as shown in S130), and the next processing is performed, otherwise the device discards and generates an alarm. Next, the uplink GTC receiving module replaces the device identifier ONU-ID of the corresponding uplink GTC frame header with the corresponding extended device identifier NEW-ONU-ID (as indicated by S140).
对于上行 GTC帧的控制部分,上行 GTC接收模块已将 ONU-ID替换成 对应的 NEW-ONU-ID; 对于上行 GTC帧的数据部分包括的 PLOAM帧, 上 行 GTC接收模块将该 PLOAM帧交给 PLOAM模块进行处理,对于 PLOAM 帧的数据 (Data ) 部分, 如果涉及到 ONU-ID、 ALLOC-ID或 PORT-ID, 则 PLOAM模块在处理之前替换成对应的 NEW-ONU-ID、 NEW-ALLOC-ID或 NEW-PORT-ID (如 S210所示;), 处理完之后, PLOAM模块再将其转换成对 应的 ONU-ID、 ALLOC-ID或 PORT-ID (如 S220所示)。 应理解, 对于上行 PLOAM帧的控制部分可以由上行 GTC接收模块或 PLOAM模块将 ONU-ID 替换成对应的 EW-ONU-ID。 For the control part of the uplink GTC frame, the uplink GTC receiving module has replaced the ONU-ID with the corresponding NEW-ONU-ID; for the PLOAM frame included in the data part of the uplink GTC frame, the uplink GTC receiving module hands the PLOAM frame to the PLOAM The module processes, for the data (Data) part of the PLOAM frame, if the ONU-ID, ALLOC-ID or PORT-ID is involved, the PLOAM module is replaced with the corresponding NEW-ONU-ID, NEW-ALLOC-ID before processing. Or NEW-PORT-ID (as shown in S210;), after processing, the PLOAM module converts it into a corresponding ONU-ID, ALLOC-ID or PORT-ID (as shown in S220). It should be understood that the control portion of the uplink PLOAM frame may be replaced by the uplink GTC receiving module or the PLOAM module with the corresponding EW-ONU-ID.
对于上行 GTC帧的数据部分包括的 DBRu ( Dynamic Bandwidth Report upstream, 上行动态带宽报告) 字段, 该 DBRu 字段包括 DBA ( Dynamic Bandwidth Allocation, 动态带宽分配) 和 CRC ( Cyclic Redundancy Check, 循环冗余校验 )字段, 该 DBA字段是用户流量需求信息的指示。 由于 DBRu 字段本身不包含 ID信息, 但根据上行时序关系与 NEW-ALLOC-ID相对应, 上行 GTC接收模块将 NEW-ALLOC-ID和 DBA提取出来交给 DBA计算模 块处理即可。 For the DBRu (Dynamic Bandwidth Report upstream) field included in the data portion of the uplink GTC frame, the DBRu field includes DBA (Dynamic Bandwidth Allocation) and CRC (Cyclic Redundancy Check). Field, the DBA field is an indication of user traffic demand information. Since the DBRu field itself does not contain ID information, but the uplink timing relationship corresponds to the NEW-ALLOC-ID, the uplink GTC receiving module extracts the NEW-ALLOC-ID and DBA and hands it to the DBA calculation module for processing.
对于上行 GTC帧的数据部分包括的 GEM帧, GEM帧头部的 PORT-ID 需要替换成对应的 NEW-PORT-ID, 由上行 GTC接收模块转换后交给上行 GEM接收模块进行处理 (如 S230所示 )。 由于普通 GEM负载 ( payload ) 与 ID转换无关, 可以按照现有技术处理后从网络侧转发出去。 For the GEM frame included in the data part of the uplink GTC frame, the PORT-ID of the GEM frame header needs to be replaced with the corresponding NEW-PORT-ID, which is converted by the uplink GTC receiving module and then sent to the uplink GEM receiving module for processing (such as S230). Show). Since the normal GEM payload is independent of the ID conversion, it can be forwarded from the network side after processing according to the prior art.
对于 OMCI 报文即 ONU 管理和控制接口 ( Optical Network Unit Management and Control Interface, 简称为 "OMCI" )报文, 其与普通 GEM 负载是通过 PORT-ID或 NEW-PORT-ID区分的, OMCI报文的 PORT-ID或 NEW-PORT-ID与 ONU-ID或 NEW-ONU-ID—致。 对于 OMCI报文的处理,
其 GEM 帧头在上行 GEM接收模块已经处理, 并且与 NEW-ONU-ID 或 NEW-PORT-ID 已经对应起来; 对 GEM 帧头部以外的数据部分的处理由 OMCI模块实现, 根据 OMCI实现原理或标准定义, 如果涉及到 ONU-ID、 ALLOC-ID 或 PORT-ID , 则 OMCI 模块在处理之前替换成对应的 NEW-ONU-ID, NEW-ALLOC-ID或 NEW-PORT-ID (如 S240所示), 处理完 之后, OMCI模块再将其转换成对应的 ONU-ID、 ALLOC-ID或 PORT-ID (如 S250所示;)。 For an OMCI packet, that is, an Optical Network Unit Management and Control Interface (OMCI) packet, the OMCI packet is distinguished from the normal GEM payload by PORT-ID or NEW-PORT-ID. The PORT-ID or NEW-PORT-ID is the same as the ONU-ID or NEW-ONU-ID. For the processing of OMCI messages, The GEM header is processed in the upstream GEM receiving module and is associated with the NEW-ONU-ID or NEW-PORT-ID; the processing of the data portion other than the GEM frame header is implemented by the OMCI module, according to the OMCI implementation principle or The standard definition, if an ONU-ID, ALLOC-ID or PORT-ID is involved, the OMCI module is replaced with the corresponding NEW-ONU-ID, NEW-ALLOC-ID or NEW-PORT-ID before processing (as shown in S240). After processing, the OMCI module converts it into the corresponding ONU-ID, ALLOC-ID or PORT-ID (as shown in S250;).
对于 DBA的处理, 上行 GTC接收模块将 NEW-ALLOC-ID和 DBA (提 取自 DBRu )转发给 DBA计算模块,该模块计算各上行通道(以 US-PON-ID 标记 ) 上分配给各 T-CONT (以 NEW-ALLOC-ID标记) 的带宽大小, 并将 计算结果交给 BWMAP生成模块。 BWMAP生成模块将各 T-CONT的带宽 计算结果根据 DS-PON-ID分组, 然后为各 T-CONT分配具体的时隙授权, 并按开始时间排序, 生成以 DS-PON-ID分组的 BWMAP。 BWMAP转换模 块将 NEW-ALLOC-ID 替换成对应的 ALLOC-ID , 然后分别下发到 DS-PON-ID对应的下行 GTC发送模块。 BWMAP重组模块将 BWMAP生成 模块生成的以 DS-PON-ID分组的 BWMAP根据 NEW-ALLOC-ID对应的 US-PON-ID重新进行分组并按开始时间排序, 然后分别下发给 US-PON-ID 对应的上行 GTC接收模块。 For DBA processing, the upstream GTC receiving module forwards NEW-ALLOC-ID and DBA (extracted from DBRu) to the DBA computing module, which calculates each upstream channel (marked with US-PON-ID) assigned to each T-CONT The bandwidth size (marked with NEW-ALLOC-ID), and the calculation result is given to the BWMAP generation module. The BWMAP generation module groups the bandwidth calculation results of each T-CONT according to the DS-PON-ID, and then allocates specific time slot grants for each T-CONT, and sorts according to the start time to generate a BWMAP grouped by DS-PON-ID. The BWMAP conversion module replaces the NEW-ALLOC-ID with the corresponding ALLOC-ID, and then delivers it to the downlink GTC transmission module corresponding to the DS-PON-ID. The BWMAP reassembly module re-groups the BWMAPs of the DS-PON-IDs generated by the BWMAP generation module according to the US-PON-ID corresponding to the NEW-ALLOC-ID, and sorts them according to the start time, and then delivers them to the US-PON-ID respectively. Corresponding upstream GTC receiving module.
因此, 本发明实施例的转换终端设备的标识符的方法, 通过对终端设备 的标识符进行替换 , 能够实现媒体接入控制层对大分支比无源光网络系统的 支持, 并能够不改动光网络单元或终端, 与现有无源光网络标准兼容, 从而 能够提高系统的容量, 并降低系统的成本。 Therefore, the method for converting the identifier of the terminal device in the embodiment of the present invention, by replacing the identifier of the terminal device, enables the medium access control layer to support the large branch than the passive optical network system, and can change the light without changing the light. The network unit or terminal is compatible with existing passive optical network standards, thereby increasing system capacity and reducing system cost.
上文中结合图 2至图 5, 对上行方向的数据的处理进行了描述, 下面将 结合图 6, 详细描述对下行方向的数据的处理。 The processing of the data in the uplink direction has been described above with reference to Figs. 2 to 5, and the processing of the data in the downlink direction will be described in detail below with reference to Fig. 6.
如图 6所示,根据本发明实施例的转换终端设备的标识符的方法 300包 括: As shown in FIG. 6, a method 300 of converting an identifier of a terminal device according to an embodiment of the present invention includes:
S310, OLT装置将发送给该终端设备的信息中的扩展设备标识符、扩展 传输容器标识符和扩展端口标识符分别替换为相应的设备标识符、传输容器 标识符和端口标识符, 并形成下行数据; S310. The OLT device replaces the extended device identifier, the extended transport container identifier, and the extended port identifier in the information sent to the terminal device with the corresponding device identifier, the transport container identifier, and the port identifier, respectively, and forms a downlink. Data
S320, OLT装置向该终端设备发送该下行数据。 S320. The OLT device sends the downlink data to the terminal device.
具体地, 仍以 HPON系统为例进行说明, 对于 OMCI报文, 如前所述,
OMCI模块输出的 OMCI报文是已经转换成 ONU-ID、 ALLOC-ID或 PORT-ID 的, 且与 NEW-ONU-ID或 NEW-PORT-ID 的对应关系也是明确的。 OMCI 模块根据 NEW-PORT-ID对应的 DS-PON-ID将 OMCI 4艮文转发到对应的下 行 GEM发送模块处理。 下行 GEM发送模块将 OMCI报文和业务数据封装 成 GEM帧, 将 NEW-PORT-ID替换成 PORT-ID, 然后交给下行 GTC发送模 块 (如 S310所示 )。 Specifically, the HPON system is still taken as an example for description. For the OMCI message, as described above, The OMCI message output by the OMCI module is already converted to ONU-ID, ALLOC-ID or PORT-ID, and the correspondence with NEW-ONU-ID or NEW-PORT-ID is also clear. The OMCI module forwards the OMCI 4 艮 message to the corresponding downstream GEM sending module according to the DS-PON-ID corresponding to the NEW-PORT-ID. The downlink GEM sending module encapsulates the OMCI message and the service data into a GEM frame, replaces the NEW-PORT-ID with the PORT-ID, and then passes it to the downlink GTC sending module (as shown in S310).
对于 PLOAM消息的处理,如前所述, PLOAM模块输出的下行 PLOAM 消息是已经转换成 ONU-ID、 ALLOC-ID或 PORT-ID的,且与 NEW-ONU-ID 的对应关系也是明确的。 PLOAM模块根据 NEW-ONU-ID对应的 DS-PON-ID 将 PLOAM报文转发到对应的下行 GTC发送模块处理 (如 S310所示)。 For the processing of the PLOAM message, as described above, the downlink PLOAM message output by the PLOAM module has been converted into ONU-ID, ALLOC-ID or PORT-ID, and the correspondence with the NEW-ONU-ID is also clear. The PLOAM module forwards the PLOAM packet to the corresponding downlink GTC sending module according to the DS-PON-ID corresponding to the NEW-ONU-ID (as shown in S310).
下行 GTC发送模块将 ID转换后的下行 PLOAM消息、 BWMAP和 GEM 帧等信息组装成下行 GTC帧, 通过对应的发射机下发给 ONU (如 S320所 示)。 The downlink GTC sending module assembles the downlink PLOAM message, the BWMAP, and the GEM frame, which are converted by the ID, into a downlink GTC frame, and sends the information to the ONU through the corresponding transmitter (as shown in S320).
因此, 本发明实施例的转换终端设备的标识符的方法, 通过对终端设备 的标识符进行替换, 能够实现媒体接入控制层对大分支比无源光网络系统的 支持, 并能够不改动光网络单元或终端, 与现有无源光网络标准兼容, 从而 能够提高系统的容量, 并降低系统的成本。 Therefore, the method for converting the identifier of the terminal device in the embodiment of the present invention, by replacing the identifier of the terminal device, enables the medium access control layer to support the large branch than the passive optical network system, and can change the light without changing the light. The network unit or terminal is compatible with existing passive optical network standards, thereby increasing system capacity and reducing system cost.
上文中结合图 2至图 6, 详细描述了根据本发明实施例的转换终端设备 的标识符的方法, 下面将结合图 7至图 10,详细描述根据本发明实施例的转 换终端设备的标识符的装置。 The method for converting the identifier of the terminal device according to the embodiment of the present invention is described in detail above with reference to FIG. 2 to FIG. 6, and the identifier of the conversion terminal device according to the embodiment of the present invention will be described in detail below with reference to FIGS. 7 to 10. s installation.
如图 7所示,根据本发明实施例的转换终端设备的标识符的装置 500包 括: As shown in FIG. 7, an apparatus 500 for converting an identifier of a terminal device according to an embodiment of the present invention includes:
接收单元 510, 用于接收终端设备发送的上行数据, 该上行数据的控制 部分包括指示该终端设备的设备标识符; The receiving unit 510 is configured to receive uplink data sent by the terminal device, where the control part of the uplink data includes a device identifier indicating the terminal device;
获取单元 520, 用于根据与该上行数据对应的带宽授权信息, 获取与该 上行数据相应的扩展设备标识符; The obtaining unit 520 is configured to obtain, according to the bandwidth authorization information corresponding to the uplink data, an extended device identifier corresponding to the uplink data.
确定单元 530, 用于确定该接收单元接收的该上行数据的控制部分包括 的该设备标识符与该获取单元获取的该扩展设备标识符相匹配; a determining unit 530, configured to determine that the device identifier included in the control part of the uplink data received by the receiving unit matches the extended device identifier acquired by the acquiring unit;
第一替换单元 540, 用于将该接收单元接收的该上行数据的控制部分包 括的该设备标识符替换为该获取单元获取的该扩展设备标识符。 The first replacing unit 540 is configured to replace, by the receiving unit, the device identifier included in the control part of the uplink data with the extended device identifier acquired by the acquiring unit.
本发明实施例的转换终端设备的标识符的装置, 通过对终端设备的标识
符进行替换, 能够实现媒体接入控制层对大分支比无源光网络系统的支持, 并能够不改动光网络单元或终端, 与现有无源光网络标准兼容, 从而能够提 高系统的容量, 并降低系统的成本。 An apparatus for converting an identifier of a terminal device according to an embodiment of the present invention, by identifying an identifier of the terminal device The replacement of the symbol enables the medium access control layer to support the large branch than the passive optical network system, and can be compatible with the existing passive optical network standard without changing the optical network unit or the terminal, thereby improving the capacity of the system. And reduce the cost of the system.
在本发明实施例中, 可选地, 如图 8所示, 该获取单元 520包括: 第一获取子单元 521 , 用于获取该带宽授权信息中的扩展传输容器标识 符; In the embodiment of the present invention, optionally, as shown in FIG. 8, the obtaining unit 520 includes: a first obtaining subunit 521, configured to acquire an extended transport container identifier in the bandwidth authorization information;
第二获取子单元 522,用于根据在注册阶段生成的终端设备分组映射表, 获取与该扩展传输容器标识符相应的该扩展设备标识符, 其中该终端设备分 组映射表包括下行通道标识符、 上行通道标识符、 设备标识符、 传输容器标 识符、 端口标识符、 扩展设备标识符、 扩展传输容器标识符和扩展端口标识 符之间的对应关系。 a second obtaining sub-unit 522, configured to obtain, according to the terminal device group mapping table generated in the registration phase, the extended device identifier corresponding to the extended transport container identifier, where the terminal device group mapping table includes a downlink channel identifier, Correspondence between the upstream channel identifier, device identifier, transport container identifier, port identifier, extended device identifier, extended transport container identifier, and extended port identifier.
可选地, 该带宽授权信息为带宽映射图。 Optionally, the bandwidth authorization information is a bandwidth map.
在本发明实施例中, 可选地, 该确定单元 530还用于: 在该上行数据的 控制部分包括的设备标识符与该扩展设备标识符包括的设备标识符相同时, 确定该上行数据的控制部分包括的设备标识符与该扩展设备标识符相匹配。 In the embodiment of the present invention, the determining unit 530 is further configured to: when the device identifier included in the control part of the uplink data is the same as the device identifier included in the extended device identifier, determine the uplink data. The device identifier included in the control section matches the extended device identifier.
在本发明实施例中, 可选地, 如图 9所示, 该装置 500还包括第二替换 单元 550, 该第二替换单元 550用于: In the embodiment of the present invention, optionally, as shown in FIG. 9, the device 500 further includes a second replacement unit 550, and the second replacement unit 550 is configured to:
在处理该上行数据的数据部分之前, 对该上行数据的数据部分进行第一 标识符替换处理; Before processing the data portion of the uplink data, performing a first identifier replacement process on the data portion of the uplink data;
在处理该上行数据的数据部分之后, 对该上行数据的数据部分进行第二 标识符替换处理。 After processing the data portion of the uplink data, the data portion of the uplink data is subjected to a second identifier replacement process.
在本发明实施例中,可选地,该第一标识符替换处理包括将设备标识符、 传输容器标识符和端口标识符分别替换为相应的扩展设备标识符、扩展传输 容器标识符和扩展端口标识符; 该第二标识符替换处理包括将扩展设备标识 符、 扩展传输容器标识符和扩展端口标识符分别替换为相应的设备标识符、 传输容器标识符和端口标识符。 In an embodiment of the present invention, optionally, the first identifier replacement process includes replacing the device identifier, the transport container identifier, and the port identifier with the corresponding extended device identifier, the extended transport container identifier, and the extended port, respectively. The identifier; the second identifier replacement process includes replacing the extended device identifier, the extended transport container identifier, and the extended port identifier with respective device identifiers, transport container identifiers, and port identifiers.
在本发明实施例中, 可选地, 该扩展设备标识符包括指示下行通道的下 行通道标识符 DS-PON-ID, 以及指示终端设备的该设备标识符 ONU-ID, 该 扩展传输容器标识符包括该下行通道标识符以及指示传输容器的该传输容 器标识符 ALLOC-ID , 该扩展端口标识符包括该下行通道标识符以及指示端 口的该端口标识符 PORT-ID。
在本发明实施例中, 可选地, 如图 9所示, 该装置 500还包括: 第三替换单元 560, 用于将发送给该终端设备的信息中的扩展设备标识 符、 扩展传输容器标识符和扩展端口标识符分别替换为相应的设备标识符、 传输容器标识符和端口标识符, 并形成下行数据; In an embodiment of the present invention, optionally, the extended device identifier includes a downlink channel identifier DS-PON-ID indicating a downlink channel, and the device identifier ONU-ID indicating the terminal device, the extended transmission container identifier The downstream channel identifier is included and the transport container identifier ALLOC-ID indicating the transport container, the extended port identifier including the downstream channel identifier and the port identifier PORT-ID indicating the port. In the embodiment of the present invention, optionally, as shown in FIG. 9, the apparatus 500 further includes: a third replacement unit 560, configured to use an extended device identifier, an extended transport container identifier, in the information sent to the terminal device. And the extended port identifier are replaced with corresponding device identifiers, transport container identifiers, and port identifiers, respectively, and form downlink data;
发送单元 570, 用于向该终端设备发送该下行数据。 The sending unit 570 is configured to send the downlink data to the terminal device.
在本发明实施例中, 可选地, 如图 10所示, 该第二替换单元 550包括: 第一替换子单元 551 , 用于在该上行数据为上行吉比特无源光网络 GPON传输汇聚 GTC帧时, 在处理该上行 GTC帧中的物理层操作管理维护 PLOAM帧的数据部分之前, 对该 PLOAM帧的数据部分进行第一标识符替 换处理; In the embodiment of the present invention, optionally, as shown in FIG. 10, the second replacement unit 550 includes: a first replacement subunit 551, configured to transmit the GTC to the uplink Gigabit passive optical network GPON in the uplink data. At the time of the frame, the first identifier replacement process is performed on the data portion of the PLOAM frame before the physical layer operation management in the uplink GTC frame is processed to maintain the data portion of the PLOAM frame;
第二替换子单元 552, 用于在处理该 PLOAM帧的数据部分之后, 对该 PLOAM帧的数据部分进行第二标识符替换处理。 The second replacement sub-unit 552 is configured to perform a second identifier replacement process on the data portion of the PLOAM frame after processing the data portion of the PLOAM frame.
在本发明实施例中, 可选地, 如图 10所示, 该第二替换单元 550还包 括: In the embodiment of the present invention, optionally, as shown in FIG. 10, the second replacing unit 550 further includes:
第三替换子单元 553 , 用于将该上行 GTC帧包括的吉比特无源光网络 a third replacement subunit 553, a gigabit passive optical network used for the uplink GTC frame
GPON封装方法 GEM帧中的端口标识符替换为该扩展端口标识符。 GPON Encapsulation Method The port identifier in the GEM frame is replaced with the extension port identifier.
在本发明实施例中,可选地,如图 9所示, 该第二替换单元 550还包括: 第四替换子单元 554,用于在处理该 GEM帧承载的光网络单元 ONU管 理和控制接口 OMCI报文之前,对该 OMCI报文进行该第一标识符替换处理; 第五替换子单元 555, 用于在处理该 OMCI报文之后, 对该 OMCI报文 进行该第二标识符替换处理。 In the embodiment of the present invention, optionally, as shown in FIG. 9, the second replacement unit 550 further includes: a fourth replacement subunit 554, configured to process an optical network unit ONU management and control interface carried by the GEM frame. Before the OMCI message, the first identifier replacement process is performed on the OMCI message; the fifth replacement sub-unit 555 is configured to perform the second identifier replacement process on the OMCI message after processing the OMCI message.
根据本发明实施例的装置 500 可对应于本发明实施例中的光线路终端 OLT装置, 并且装置 500 中的各个模块的上述和其它操作和 /或功能分别为 了实现图 2至图 6中的各个方法 100至 300的相应流程, 为了筒洁, 在此不 再赘述。 The apparatus 500 according to an embodiment of the present invention may correspond to the optical line terminal OLT apparatus in the embodiment of the present invention, and the above and other operations and/or functions of the respective modules in the apparatus 500 are respectively implemented in order to implement each of FIGS. 2 to 6 The corresponding processes of the methods 100 to 300 are not described here.
本发明实施例的转换终端设备的标识符的装置, 通过对终端设备的标识 符进行替换, 能够实现媒体接入控制层对大分支比无源光网络系统的支持, 并能够不改动光网络单元或终端, 与现有无源光网络标准兼容, 从而能够提 高系统的容量, 并降低系统的成本。 The device for converting the identifier of the terminal device in the embodiment of the present invention can replace the identifier of the terminal device, and can support the medium access control layer to the large branch than the passive optical network system, and can change the optical network unit without changing Or terminal, compatible with existing passive optical network standards, thereby increasing system capacity and reducing system cost.
本领域普通技术人员可以意识到, 结合本文中所公开的实施例描述的各 示例的单元及算法步骤, 能够以电子硬件、 计算机软件或者二者的结合来实
现, 为了清楚地说明硬件和软件的可互换性, 在上述说明中已经按照功能一 般性地描述了各示例的组成及步骤。 这些功能究竟以硬件还是软件方式来执 行, 取决于技术方案的特定应用和设计约束条件。 专业技术人员可以对每个 特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超 出本发明的范围。 Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. Now, in order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been generally described in terms of functions in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
所属领域的技术人员可以清楚地了解到, 为了描述的方便和筒洁, 上述 描述的系统、 装置和单元的具体工作过程, 可以参考前述方法实施例中的对 应过程, 在此不再赘述。 A person skilled in the art can clearly understand that, for the convenience and the cleaning of the description, the specific working processes of the system, the device and the unit described above can refer to the corresponding processes in the foregoing method embodiments, and details are not described herein again.
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和 方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实施例仅仅是示 意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可 以有另外的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个 系统, 或一些特征可以忽略, 或不执行。 另外, 所显示或讨论的相互之间的 耦合或直接耦合或通信连接可以是通过一些接口、装置或单元的间接耦合或 通信连接, 也可以是电的, 机械的或其它的形式连接。 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本发明实施例方案的目的。 In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection. The components displayed for the unit may or may not be physical units, ie may be located in one place, or may be distributed over multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.
另外, 在本发明各个实施例中的各功能单元可以集成在一个处理单元 中, 也可以是各个单元单独物理存在, 也可以是两个或两个以上单元集成在 一个单元中。 上述集成的单元既可以釆用硬件的形式实现, 也可以采用软件 功能单元的形式实现。 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销 售或使用时, 可以存储在一个计算机可读取存储介质中。 基于这样的理解, 本发明的技术方案本质上或者说对现有技术做出贡献的部分, 或者该技术方 案的全部或部分可以以软件产品的形式体现出来, 该计算机软件产品存储在 一个存储介质中, 包括若干指令用以使得一台计算机设备(可以是个人计算 机, 服务器, 或者网络设备等)执行本发明各个实施例所述方法的全部或部 分步骤。 而前述的存储介质包括: U盘、 移动硬盘、 只读存储器 (ROM, Read-Only Memory ), 迹机存耳又存储器 ( RAM, Random Access Memory )、
磁碟或者光盘等各种可以存储程序代码的介质。 The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention contributes in essence or to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a RAM (Random Access Memory), A variety of media that can store program code, such as a disk or an optical disk.
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到各种等效的修改或替换, 这些修改或替换都应涵盖在本发明的保护范围 之内。 因此, 本发明的保护范围应以权利要求的保护范围为准。
The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of the invention should be determined by the scope of the claims.
Claims
1、 一种转换终端设备的标识符的方法, 其特征在于, 包括: A method for converting an identifier of a terminal device, comprising:
接收终端设备发送的上行数据, 所述上行数据的控制部分包括指示所述 终端设备的设备标识符; Receiving uplink data sent by the terminal device, where the control part of the uplink data includes a device identifier indicating the terminal device;
根据与所述上行数据对应的带宽授权信息, 获取与所述上行数据相应的 扩展设备标识符; Obtaining, according to the bandwidth authorization information corresponding to the uplink data, an extended device identifier corresponding to the uplink data;
确定所述上行数据的控制部分包括的所述设备标识符与所述扩展设备 标识符相匹配; Determining that the device identifier included in the control portion of the uplink data matches the extended device identifier;
将所述上行数据的控制部分包括的所述设备标识符替换为所述扩展设 备标识符。 The device identifier included in the control portion of the upstream data is replaced with the extended device identifier.
2、 根据权利要求 1 所述的方法, 其特征在于, 所述根据与所述上行数 据对应的带宽授权信息,获取与所述上行数据相应的扩展设备标识符,包括: 获取所述带宽授权信息中的扩展传输容器标识符; The method according to claim 1, wherein the acquiring the extended device identifier corresponding to the uplink data according to the bandwidth authorization information corresponding to the uplink data comprises: acquiring the bandwidth authorization information Extended transport container identifier in ;
根据在注册阶段生成的终端设备分组映射表, 获取与所述扩展传输容器 标识符相应的所述扩展设备标识符, 其中所述终端设备分组映射表包括下行 通道标识符、 上行通道标识符、设备标识符、传输容器标识符、 端口标识符、 扩展设备标识符、 扩展传输容器标识符和扩展端口标识符之间的对应关系。 Obtaining the extended device identifier corresponding to the extended transport container identifier according to a terminal device group mapping table generated in a registration phase, where the terminal device group mapping table includes a downlink channel identifier, an uplink channel identifier, and a device The correspondence between the identifier, transport container identifier, port identifier, extended device identifier, extended transport container identifier, and extended port identifier.
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述确定所述上行 数据的控制部分包括的所述设备标识符与所述扩展设备标识符相匹配, 包 括: The method according to claim 1 or 2, wherein the device identifier included in the control portion for determining the uplink data matches the extended device identifier, and includes:
在所述上行数据的控制部分包括的设备标识符与所述扩展设备标识符 包括的设备标识符相同时, 确定所述上行数据的控制部分包括的设备标识符 与所述扩展设备标识符相匹配。 When the device identifier included in the control portion of the uplink data is the same as the device identifier included in the extended device identifier, determining that the device identifier included in the control portion of the uplink data matches the extended device identifier .
4、 根据权利要求 1至 3中任一项所述的方法, 其特征在于, 所述方法 还包括: The method according to any one of claims 1 to 3, wherein the method further comprises:
在处理所述上行数据的数据部分之前, 对所述上行数据的数据部分进行 第一标识符替换处理; Performing a first identifier replacement process on the data portion of the uplink data before processing the data portion of the uplink data;
在处理所述上行数据的数据部分之后, 对所述上行数据的数据部分进行 第二标识符替换处理。 After processing the data portion of the uplink data, a second identifier replacement process is performed on the data portion of the uplink data.
5、 根据权利要求 4所述的方法, 其特征在于, 所述第一标识符替换处 理包括将设备标识符、传输容器标识符和端口标识符分别替换为相应的扩展 设备标识符、 扩展传输容器标识符和扩展端口标识符; 5. The method according to claim 4, wherein the first identifier replacement process comprises replacing the device identifier, the transport container identifier, and the port identifier with corresponding extensions, respectively. Device identifier, extended transport container identifier, and extended port identifier;
所述第二标识符替换处理包括将扩展设备标识符、扩展传输容器标识符 和扩展端口标识符分别替换为相应的设备标识符、传输容器标识符和端口标 识符。 The second identifier replacement process includes replacing the extended device identifier, the extended transport container identifier, and the extended port identifier with respective device identifiers, transport container identifiers, and port identifiers, respectively.
6、 根据权利要求 5所述的方法, 其特征在于, 所述扩展设备标识符包 括指示下行通道的下行通道标识符 DS-PON-ID,以及指示终端设备的所述设 备标识符 ONU-ID , 所述扩展传输容器标识符包括所述下行通道标识符以及 指示传输容器的所述传输容器标识符 ALLOC-ID, 所述扩展端口标识符包括 所述下行通道标识符以及指示端口的所述端口标识符 PORT-ID。 6. The method according to claim 5, wherein the extended device identifier comprises a downlink channel identifier DS-PON-ID indicating a downlink channel, and the device identifier ONU-ID indicating the terminal device, The extended transport container identifier includes the downstream channel identifier and the transport container identifier ALLOC-ID indicating a transport container, the extended port identifier including the downlink channel identifier and the port identifier indicating a port Character PORT-ID.
7、 根据权利要求 5所述的方法, 其特征在于, 所述对所述上行数据的 数据部分进行第一标识符替换处理, 以及对所述上行数据的数据部分进行第 二标识符替换处理, 包括: The method according to claim 5, wherein the data portion of the uplink data is subjected to a first identifier replacement process, and the data portion of the uplink data is subjected to a second identifier replacement process, Includes:
在所述上行数据为上行吉比特无源光网络 GPON传输汇聚 GTC帧时, 在处理所述上行 GTC帧中的物理层操作管理维护 PLOAM帧的数据部分之 前, 对所述 PLOAM帧的数据部分进行第一标识符替换处理; When the uplink data is an uplink Gigabit passive optical network GPON transmission aggregate GTC frame, before processing the data layer of the PLOAM frame in the physical layer operation management of the uplink GTC frame, the data part of the PLOAM frame is performed. First identifier replacement processing;
在处理所述 PLOAM帧的数据部分之后, 对所述 PLOAM帧的数据部分 进行第二标识符替换处理。 After processing the data portion of the PLOAM frame, a second identifier replacement process is performed on the data portion of the PLOAM frame.
8、 根据权利要求 7所述的方法, 其特征在于, 所述对所述上行数据的 数据部分进行第一标识符替换处理, 以及对所述上行数据的数据部分进行第 二标识符替换处理, 还包括: The method according to claim 7, wherein the data portion of the uplink data is subjected to a first identifier replacement process, and the data portion of the uplink data is subjected to a second identifier replacement process, Also includes:
将所述上行 GTC帧包括的吉比特无源光网络 GPON封装方法 GEM帧 中的端口标识符替换为所述扩展端口标识符。 The port identifier in the GEM frame of the gigabit passive optical network GPON encapsulation method included in the uplink GTC frame is replaced with the extended port identifier.
9、 根据权利要求 8所述的方法, 其特征在于, 所述对所述上行数据的 数据部分进行第一标识符替换处理, 以及对所述上行数据的数据部分进行第 二标识符替换处理, 还包括: The method according to claim 8, wherein the data portion of the uplink data is subjected to a first identifier replacement process, and the data portion of the uplink data is subjected to a second identifier replacement process, Also includes:
在处理所述 GEM帧承载的光网络单元 ONU管理和控制接口 OMCI报 文之前, 对所述 OMCI 4艮文进行所述第一标识符替换处理; Performing the first identifier replacement process on the OMCI 4艮 message before processing the optical network unit ONU management and control interface OMCI message carried by the GEM frame;
在处理所述 OMCI报文之后,对所述 OMCI报文进行所述第二标识符替 换处理。 After processing the OMCI message, performing the second identifier replacement process on the OMCI message.
10、 根据权利要求 1至 9中任一项所述的方法, 其特征在于, 所述方法 还包括: 将发送给所述终端设备的信息中的扩展设备标识符、扩展传输容器标识 符和扩展端口标识符分别替换为相应的设备标识符、传输容器标识符和端口 标识符, 并形成下行数据; The method according to any one of claims 1 to 9, wherein the method further comprises: Substituting the extended device identifier, the extended transport container identifier, and the extended port identifier in the information sent to the terminal device with respective device identifiers, transport container identifiers, and port identifiers, and forming downlink data;
向所述终端设备发送所述下行数据。 Sending the downlink data to the terminal device.
11、 一种转换终端设备的标识符的装置, 其特征在于, 包括: 接收单元, 用于接收终端设备发送的上行数据, 所述上行数据的控制部 分包括指示所述终端设备的设备标识符; An apparatus for converting an identifier of a terminal device, comprising: a receiving unit, configured to receive uplink data sent by the terminal device, where the control part of the uplink data includes a device identifier indicating the terminal device;
获取单元, 用于根据与所述上行数据对应的带宽授权信息, 获取与所述 上行数据相应的扩展设备标识符; And an obtaining unit, configured to acquire, according to the bandwidth authorization information corresponding to the uplink data, an extended device identifier corresponding to the uplink data;
确定单元, 用于确定所述接收单元接收的所述上行数据的控制部分包括 第一替换单元, 用于将所述接收单元接收的所述上行数据的控制部分包 括的所述设备标识符替换为所述获取单元获取的所述扩展设备标识符。 a determining unit, where the control part for determining the uplink data received by the receiving unit includes a first replacing unit, configured to replace the device identifier included in the control part of the uplink data received by the receiving unit with The extended device identifier acquired by the acquiring unit.
12、 根据权利要求 11所述的装置, 其特征在于, 所述获取单元包括: 第一获取子单元, 用于获取所述带宽授权信息中的扩展传输容器标识 符; The device according to claim 11, wherein the acquiring unit comprises: a first acquiring subunit, configured to acquire an extended transport container identifier in the bandwidth authorization information;
第二获取子单元, 用于根据在注册阶段生成的终端设备分组映射表, 获 取与所述扩展传输容器标识符相应的所述扩展设备标识符, 其中所述终端设 备分组映射表包括下行通道标识符、 上行通道标识符、 设备标识符、 传输容 器标识符、 端口标识符、 扩展设备标识符、 扩展传输容器标识符和扩展端口 标识符之间的对应关系。 a second obtaining subunit, configured to acquire, according to the terminal device group mapping table generated in the registration phase, the extended device identifier corresponding to the extended transport container identifier, where the terminal device group mapping table includes a downlink channel identifier Correspondence between the character, the upstream channel identifier, the device identifier, the transport container identifier, the port identifier, the extended device identifier, the extended transport container identifier, and the extended port identifier.
13、 根据权利要求 11或 12所述的装置, 其特征在于, 所述确定单元还 用于: The device according to claim 11 or 12, wherein the determining unit is further configured to:
在所述上行数据的控制部分包括的设备标识符与所述扩展设备标识符 包括的设备标识符相同时, 确定所述上行数据的控制部分包括的设备标识符 与所述扩展设备标识符相匹配。 When the device identifier included in the control portion of the uplink data is the same as the device identifier included in the extended device identifier, determining that the device identifier included in the control portion of the uplink data matches the extended device identifier .
14、 根据权利要求 11至 13中任一项所述的装置, 其特征在于, 所述装 置还包括第二替换单元, 所述第二替换单元用于: The device according to any one of claims 11 to 13, wherein the device further comprises a second replacement unit, the second replacement unit is configured to:
在处理所述上行数据的数据部分之前, 对所述上行数据的数据部分进行 第一标识符替换处理; Performing a first identifier replacement process on the data portion of the uplink data before processing the data portion of the uplink data;
在处理所述上行数据的数据部分之后, 对所述上行数据的数据部分进行 第二标识符替换处理。 After processing the data portion of the uplink data, performing data portion of the uplink data The second identifier replacement process.
15、 根据权利要求 14所述的装置, 其特征在于, 所述第一标识符替换 处理包括将设备标识符、传输容器标识符和端口标识符分别替换为相应的扩 展设备标识符、 扩展传输容器标识符和扩展端口标识符; 所述第二标识符替 换处理包括将扩展设备标识符、扩展传输容器标识符和扩展端口标识符分别 替换为相应的设备标识符、 传输容器标识符和端口标识符。 15. The apparatus according to claim 14, wherein the first identifier replacement processing comprises replacing a device identifier, a transport container identifier, and a port identifier with a corresponding extended device identifier, an extended transport container, respectively. An identifier and an extended port identifier; the second identifier replacement process including replacing the extended device identifier, the extended transport container identifier, and the extended port identifier with respective device identifiers, transport container identifiers, and port identifiers .
16、 根据权利要求 15所述的装置, 其特征在于, 所述扩展设备标识符 包括指示下行通道的下行通道标识符 DS-PON-ID,以及指示终端设备的所述 设备标识符 ONU-ID, 所述扩展传输容器标识符包括所述下行通道标识符以 及指示传输容器的所述传输容器标识符 ALLOC-ID, 所述扩展端口标识符包 括所述下行通道标识符以及指示端口的所述端口标识符 PORT-ID。 16. The apparatus according to claim 15, wherein the extended device identifier comprises a downlink channel identifier DS-PON-ID indicating a downlink channel, and the device identifier ONU-ID indicating the terminal device, The extended transport container identifier includes the downstream channel identifier and the transport container identifier ALLOC-ID indicating a transport container, the extended port identifier including the downlink channel identifier and the port identifier indicating a port Character PORT-ID.
17、 根据权利要求 15所述的装置, 其特征在于, 所述第二替换单元包 括: 17. The apparatus according to claim 15, wherein the second replacement unit comprises:
第一替换子单元, 用于在所述上行数据为上行吉比特无源光网络 GPON 传输汇聚 GTC 帧时, 在处理所述上行 GTC 帧中的物理层操作管理维护 PLOAM帧的数据部分之前, 对所述 PLOAM帧的数据部分进行第一标识符 替换处理; a first replacement subunit, configured to: before processing, by the physical layer operation management and maintenance of the data part of the PLOAM frame in the uplink GTC frame, when the uplink data is an uplink Gigabit passive optical network GPON transmission aggregate GTC frame, The data portion of the PLOAM frame performs a first identifier replacement process;
第二替换子单元, 用于在处理所述 PLOAM帧的数据部分之后, 对所述 PLOAM帧的数据部分进行第二标识符替换处理。 a second replacement subunit, configured to perform a second identifier replacement process on the data portion of the PLOAM frame after processing the data portion of the PLOAM frame.
18、 根据权利要求 17所述的装置, 其特征在于, 所述第二替换单元还 包括: The device according to claim 17, wherein the second replacement unit further comprises:
第三替换子单元, 用于将所述上行 GTC 帧包括的吉比特无源光网络 GPON封装方法 GEM帧中的端口标识符替换为所述扩展端口标识符。 And a third replacement subunit, configured to replace the port identifier in the GEM frame of the gigabit passive optical network GPON encapsulation method included in the uplink GTC frame with the extended port identifier.
19、 根据权利要求 18所述的装置, 其特征在于, 所述第二替换单元还 包括: The device according to claim 18, wherein the second replacement unit further comprises:
第四替换子单元, 用于在处理所述 GEM帧承载的光网络单元 ONU管 理和控制接口 OMCI报文之前,对所述 OMCI报文进行所述第一标识符替换 处理; a fourth replacement subunit, configured to perform the first identifier replacement processing on the OMCI message before processing the optical network unit ONU management and the control interface OMCI message carried by the GEM frame;
第五替换子单元, 用于在处理所述 OMCI报文之后, 对所述 OMCI报文 进行所述第二标识符替换处理。 And a fifth replacement subunit, configured to perform the second identifier replacement process on the OMCI message after processing the OMCI message.
20、 根据权利要求 11至 19中任一项所述的装置, 其特征在于, 所述装 置还包括: 20. Apparatus according to any one of claims 11 to 19, wherein said The return includes:
第三替换单元, 用于将发送给所述终端设备的信息中的扩展设备标识 符、 扩展传输容器标识符和扩展端口标识符分别替换为相应的设备标识符、 传输容器标识符和端口标识符, 并形成下行数据; a third replacement unit, configured to replace the extended device identifier, the extended transport container identifier, and the extended port identifier in the information sent to the terminal device with a corresponding device identifier, a transport container identifier, and a port identifier, respectively And form downlink data;
发送单元, 用于向所述终端设备发送所述下行数据。 And a sending unit, configured to send the downlink data to the terminal device.
21、 一种无源光网络系统, 其特征在于, 包括: 光线路终端和多个光网 络单元, 所述光线路终端通过光分配网络连接到所述多个光网络单元; 其中, 所述光网络单元用于向所述光网絡单元发送上行数据; 所述光线路终端用于接收所述光网络单元发送的携带有指示所述光网 络单元的设备标识符的上行数据, 根据与所述上行数据对应的带宽授权信 息, 获取与所述上行数据相应的扩展设备标识符, 并在确定所述上行数据的 携带的设备标识符与所述扩展设备标识符相匹配时, 将所述上行数据携带的 设备标识符替换为所述扩展设备标识符。 A passive optical network system, comprising: an optical line terminal and a plurality of optical network units, wherein the optical line terminal is connected to the plurality of optical network units through an optical distribution network; wherein the optical The network unit is configured to send uplink data to the optical network unit, where the optical line terminal is configured to receive uplink data that is sent by the optical network unit and that carries a device identifier that indicates the optical network unit, according to the uplink The bandwidth authorization information corresponding to the data, obtains an extended device identifier corresponding to the uplink data, and carries the uplink data when determining that the carried device identifier of the uplink data matches the extended device identifier The device identifier is replaced with the extended device identifier.
22、 如权利要求 21 所述的无源光网络系统, 其特征在于, 所述光线路 终端和所述多个光网络单元之间具有多个下行波长通道, 且同一个下行波长 通道的光网络单元通过时分复用与所述光线路终端进行通信, 所述下行波长 通道通过下行通道标识符进行标识, 其中所述扩展设备标识符包括所述下行 通道标识符和所述设备标识符。 The passive optical network system according to claim 21, wherein the optical line terminal and the plurality of optical network units have multiple downlink wavelength channels and optical networks of the same downlink wavelength channel The unit communicates with the optical line terminal by time division multiplexing, the downstream wavelength channel being identified by a downstream channel identifier, wherein the extended device identifier includes the downstream channel identifier and the device identifier.
23、 如权利要求 21或 22所述的无源光网络系统, 其特征在于, 所述光 线路终端包括如权利要求 9至 20所述的转换终端设备的标识符的装置, 其 中所述终端设备为光网络单元。 The passive optical network system according to claim 21 or 22, wherein the optical line terminal comprises the apparatus for converting an identifier of the terminal device according to any one of claims 9 to 20, wherein the terminal device For the optical network unit.
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