WO2012149770A1 - Procédé, dispositif et système de conversion d'identificateurs de dispositif terminal - Google Patents

Procédé, dispositif et système de conversion d'identificateurs de dispositif terminal Download PDF

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Publication number
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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WIPO (PCT)
Prior art keywords
identifier
extended
uplink data
port
data
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PCT/CN2011/080166
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English (en)
Chinese (zh)
Inventor
叶飞
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201180001779.3A priority Critical patent/CN102388566B/zh
Priority to PCT/CN2011/080166 priority patent/WO2012149770A1/fr
Publication of WO2012149770A1 publication Critical patent/WO2012149770A1/fr

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Classifications

    • 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention porte sur un procédé, un dispositif et un système de conversion d'identificateurs de dispositif terminal. Le procédé consiste à : recevoir les données de liaison montante envoyées par un dispositif terminal, la partie commande des données de liaison montante comprenant l'identificateur de dispositif indiquant le dispositif terminal ; obtenir un identificateur de dispositif étendu correspondant aux données de liaison montante conformément aux informations d'autorisation de bande passante correspondant aux données de liaison montante ; déterminer que l'identificateur de dispositif inclus dans la partie commande des données de liaison montante correspond à l'identificateur de dispositif étendu ; et remplacer l'identificateur de dispositif inclus dans la partie commande des données de liaison montante par l'identificateur de dispositif étendu. Le procédé, le dispositif et le système de conversion d'identificateurs de dispositif terminal selon les modes de réalisation de la présente invention peuvent permettre à la couche de commande d'accès au support de prendre en charge le système de réseau optique passif à grand rapport d'embranchement par remplacement de l'identificateur de dispositif terminal, et peuvent augmenter la capacité du système sans apporter aucune modification à l'unité de réseau optique ni au terminal, ce qui réduit les coûts du système.
PCT/CN2011/080166 2011-09-26 2011-09-26 Procédé, dispositif et système de conversion d'identificateurs de dispositif terminal WO2012149770A1 (fr)

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CN201180001779.3A CN102388566B (zh) 2011-09-26 2011-09-26 转换终端设备的标识符的方法、装置和系统
PCT/CN2011/080166 WO2012149770A1 (fr) 2011-09-26 2011-09-26 Procédé, dispositif et système de conversion d'identificateurs de dispositif terminal

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CN102388566B (zh) * 2011-09-26 2014-03-05 华为技术有限公司 转换终端设备的标识符的方法、装置和系统
CN102917285B (zh) * 2012-10-30 2015-05-27 华为机器有限公司 以太网无源光网络设备的测试方法及设备
CN111181857B (zh) * 2018-11-09 2020-12-29 深圳市中兴微电子技术有限公司 一种报文处理方法及装置、存储介质、光网络终端
CN111385677B (zh) * 2018-12-29 2023-07-21 南京中兴新软件有限责任公司 一种上行流调度方法及装置、网络设备
CN110012367B (zh) * 2019-03-27 2021-10-19 烽火通信科技股份有限公司 用于gpon olt的omci组帧装置及组帧方法

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