WO2009155832A1 - Système d'accès optique point à multipoint et ses procédé et dispositif de transmission de données - Google Patents

Système d'accès optique point à multipoint et ses procédé et dispositif de transmission de données Download PDF

Info

Publication number
WO2009155832A1
WO2009155832A1 PCT/CN2009/072303 CN2009072303W WO2009155832A1 WO 2009155832 A1 WO2009155832 A1 WO 2009155832A1 CN 2009072303 W CN2009072303 W CN 2009072303W WO 2009155832 A1 WO2009155832 A1 WO 2009155832A1
Authority
WO
WIPO (PCT)
Prior art keywords
module
gtc
gtc frame
onu
packet
Prior art date
Application number
PCT/CN2009/072303
Other languages
English (en)
Chinese (zh)
Inventor
高波
Original Assignee
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.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2009155832A1 publication Critical patent/WO2009155832A1/fr

Links

Classifications

    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2858—Access network architectures
    • H04L12/2861—Point-to-multipoint connection from the data network to the subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects
    • H04Q2011/0064—Arbitration, scheduling or medium access control aspects

Definitions

  • Point-to-multipoint optical access system and data transmission method and device thereof
  • the present invention belongs to the field of optical communications, and in particular, to a method, device and system for data transmission in a point-to-multipoint optical access system. Background technique
  • a typical assive optical network (PON) is shown in FIG. 1 and includes an optical line terminal (OLT), at least one optical network unit (ONU) or an optical network terminal (optical). Network terminal, ONT), and splitter splitter or optical distribution network (0 ⁇ ) connected to OLT and ONU/ONT.
  • OLT optical line terminal
  • ONT optical network terminal
  • splitter splitter or optical distribution network (0 ⁇ ) connected to OLT and ONU/ONT.
  • the data is transmitted from the OLT to the ONU as the downlink.
  • the downlink direction is transmitted in the broadcast mode.
  • the transmission from the 0NU to the 0LT is called uplink.
  • the uplink direction is unicast. Transmitted.
  • G-PON encapsulation Method GEM encapsulates services that adapt to different rates. Therefore, it has become the most used access system for operators in various countries.
  • an 0LT communicates with multiple 0NUs at the same time.
  • a unique 0NU-ID needs to be set for each 0NU as the 0NU identifier.
  • Each 0NU may carry multiple different types of user services.
  • GEM por t-ID is used to identify the GEM encapsulation of services.
  • the 0LT needs to coordinate the transmission of the ONU by means of time slice authorization, and only allows one ONU to transmit data in a certain time period. Effectively avoid conflicts.
  • QoS quality of service
  • multiple allocation units need to be set, and each allocation unit corresponds to a service flow having the same traffic characteristics, so the 0LT time slice authorization object is on the ONU.
  • the allocation unit using the Al loc-ID identifier.
  • the maximum branch ratio supported by the GP0N system is 1:64. As the number of users increases, the network scale continues to expand. To ensure the maximum benefit of operators, it is necessary to use a high branch ratio (such as 1: 512 or 1: 1024) GP0N.
  • the system is networked to increase single point capacity and reduce metro access nodes to reduce equipment and maintenance costs.
  • a 0NU supports at least 5 Al loc-IDs and 32 GEM pors, so at least 512 0NU_IDs, 2560 Al loc_IDs, and 16384 GEM por t-IDs are available for allocation.
  • the existing Gigabi t Pon Transmi ss Convergence (GTC) protocol supports only 254 ONUs and 3842 GEM pors. Obviously, the supported 0NU and GEM por t numbers cannot be satisfied. High branches are required than GP0N systems. Summary of the invention
  • embodiments of the present invention provide a method, system, and corresponding 0LT, 0NU device that can support a high branch ratio, that is, a point-to-multipoint optical access system data transmission supporting more 0NUs.
  • an embodiment of the present invention provides a data transmission method in a point-to-multipoint optical access system, where a point-to-multipoint passive optical access system includes an optical line terminal OLT and belongs to For multiple optical network units of different groups, the method of data transmission in the point-to-multipoint optical access system includes:
  • data and control information of at least one ONU having the same packet number are encapsulated in a Gigabit Passive Optical Network Transport Convergence Protocol GTC frame according to the ONU registry that records the packet number assigned to the ONU, the GTC frame
  • the identification field is filled with the at least one ONU group number
  • the GTC frame is transmitted to the plurality of optical network units 0NU.
  • the embodiment of the present invention further provides a method for data transmission in a point-to-multipoint optical access system, where the point-to-multipoint optical access system includes an optical line terminal OLT and a plurality of optical network units ONU belonging to different groups, Methods for data transmission in a point-to-multipoint optical access system include:
  • the 0NU own packet number is padded into the identification field of the uplink GTC frame, and the uplink GTC frame filled with the packet number of the 0NU itself is transmitted.
  • An embodiment of the present invention further provides an optical line terminal, including: at least one Gigabit passive optical network transmission convergence protocol GTC framing module, and each GTC framing module corresponds to at least two groups of target processing for processing corresponding packets.
  • the module, the target processing module of each group includes: a physical layer operation management and maintenance PL0AM module, a dynamic bandwidth allocation DBA control module, and a Gigabit passive optical network package transmission aggregation GEM TC adapter module;
  • the GTC framing module is configured to receive information from a target processing module of each packet, and encapsulate at least one ONU data and control information having the same packet number according to the ONU registry that records the packet number assigned to the ONU.
  • the GTC frame identification field is filled with the packet number of the at least one ONU-owned packet, and the GTC frame is sent out; when the GTC frame is received, the received GTC frame is parsed according to the reception.
  • the identifier field of the GTC frame to be forwarded to the target processing module of the corresponding packet for processing;
  • a PL0AM module of each packet a PL0AM message for processing a corresponding packet forwarded by the GTC framing module; and a corresponding packet PL0AM message to be sent to the GTC framing module; a DBA control module of each packet, a DBA message for processing the parsed corresponding packet forwarded by the GTC framing module; sending a corresponding packet DBA control message to be sent to the GTC Framing module
  • Each grouped GEM TC adapter module is configured to process a GEM block of the corresponding packet that is forwarded by the GTC framing module; and send a GEM block of the corresponding packet to be sent to the GTC framing module.
  • An embodiment of the present invention further provides an optical network unit, including a PL0AM module, a DBA control module, and a GEM TC adapter module, and further includes a GTC frame filter and a GTC framing module;
  • the GTC frame filter is configured to compare the packet number carried in the identifier field in the received GTC frame with the packet number of the optical network unit itself when the GTC frame is received, and discard the GTC if the two do not match. a frame; if the two match, forwarding the received GTC frame to the GTC framing module;
  • the GTC framing module is configured to receive a GTC frame forwarded by the GTC frame filter, parse the GTC frame, and forward the parsed information to the PL0AM module, the DBA control module, and the GEM TC adapter module; In the GTC frame, the packet number of the optical network unit itself is filled into the identification field of the uplink GTC frame and sent out.
  • the embodiment of the present invention further provides a point-to-multipoint optical access system, including an optical line terminal 0LT and a plurality of optical network units 0NU belonging to different groups;
  • the optical line terminal is configured to encapsulate data and control information of at least one ONU having the same packet number into a Gigabit passive optical network transmission convergence protocol GTC frame according to the ONU registry that records the packet number assigned to the ONU. Transmitting the GTC frame to the multiple ONUs, where the identifier field of the GTC frame is filled with the packet number of the at least one ONU;
  • Each of the ONUs is configured to: when receiving the GTC frame, compare the packet number carried in the identifier field in the received GTC frame with the packet number of the ONU itself, and if the two do not match, discard the received GTC frame; If the two match, the received GTC frame is processed.
  • the embodiment of the present invention uses the identifier field of the GTC frame overhead part to identify the packet to the ONU, which can support the high branch ratio P0N system and increase the network capacity without reducing the existing protocol and protocol implementation, thereby reducing the single user. Cost; using the solution provided by the embodiment of the present invention Supports seamless expansion with a flexible point-to-multipoint optical access system that supports higher branch ratios. DRAWINGS
  • FIG. 1 is a schematic diagram of a reference model of a prior art P0N system
  • FIG. 2 is a schematic diagram of processing an uplink GTC frame by an optical line terminal OLT according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an optical network unit ONU processing a downlink GTC frame according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of an optical line terminal OLT processing an uplink GTC according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of an optical line terminal OLT according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of an optical network unit 0NU according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a point-to-multipoint optical access system according to an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a method, system, and OLT, 0NU device, which can support data transmission of a point-to-multipoint optical access system with a high branch ratio.
  • the method, apparatus, and system are applicable to existing GP0Ns, and point-to-multipoint communication systems that communicate using mechanisms defined by G. 984.
  • Embodiment 1 This embodiment provides a method for supporting data transmission of a high-hop ratio point-to-multipoint optical access system:
  • All ONUs belong to the default group in the initial state, and their group number is GroupO (such as 0 or all 1). Only the GTC-ID with the GTC-ID value of GroupO is received, and the GTC in the uplink GTC frame sent is- The ID is populated with GroupO.
  • the packet to the ONU is performed at the time of its registration, and the packet can be executed by the OLT or by the network management or upper processing module. Specifically, during the registration process (when initializing or when the 0LT and / or 0NU are powered off again), after receiving the serial number response of the 0NU, the 0LT can manually or according to the predetermined allocation principle or the external input allocation principle.
  • the allocation of the packet number is automatically performed on the ONU, and the allocation of the packet number can be flexibly performed, such as grouping the ONUs in order or grouping the ONUs in a random order, etc., but the 0NU_ID, A l loc_ID, GEM por t-ID belonging to the same packet ONU Field must be unique, and Different groups can be the same, for example, 0NU belonging to group 1. If its 0NU-ID is 1, no other ONU with 0NU-ID 1 can appear in group 1. Al loc-ID, GEM port-ID field with. The allocation of 0NU_ID, Al loc_ID, and GEM port-ID is based on the prior art. Limited by existing protocols, the number of ONUs per packet cannot exceed 254. The 0LT sends the assigned packet number to the corresponding ONU. There are several ways to deliver the group number:
  • the reserved byte of the Ranging-Time PL0AM message is sent to the 0NU. As shown in Table 2, the packet number is sent to the 0NU using the reserved 8-12 bytes. Byte number description
  • Add a PL0AM message, and the added PL0AM message includes at least a packet number.
  • the ONU is sent to the ONU through the ONU Management and Control Interface (0MCI) channel.
  • MCI ONU Management and Control Interface
  • the ONU After receiving the delivered packet number, the ONU sends a response message through the PL0AM or 0MCI channel to confirm the allocation of the 0LT.
  • the response message sent by the 0NU is the message corresponding to the 0LT sent message received by the ONU.
  • the 0LT side After receiving the 0NU allocation response message, the 0LT side creates a new 0NU registry, records the packet number assigned to the 0NU to the 0NU registry, or after receiving the 0NU allocation response message, at the established 0NU. A new entry is added to the registry, and the group number assigned to the 0NU is recorded in the new entry.
  • the 0NU registry can be located in the 0LT, or in the network management or higher processing module; can be implemented by a software module.
  • the ONU registry includes at least the sequence number SN of the ONU and the group number of the group group ID, which may include, but is not limited to: ONU-ID, Al loc-ID, GEM por t- assigned to the ONU. ID. ⁇ Group-ID
  • the reserved bits in the uplink GTC frame and the downlink GTC frame may be respectively used to identify the packet number; or by adding an identification field, the belonging packet is filled in the newly added identification field. number.
  • the reserved bit in the downstream GTC frame is used to identify the packet number, which is the reserved field of the downstream GTC frame overhead portion.
  • the reserved bit in the uplink GTC frame is used to identify the packet number, which is the reserved field of the uplink GTC frame overhead part, bi t 0-bi t4 in Ind:
  • an identity field may be added to the overhead portion of the downstream GTC frame and the upstream GTC frame:
  • a CRC check field can be added after the newly added identifier field to verify the identifier field and ensure correct reception.
  • each PL0AM module, GEM TC adapter module, and dynamic bandwidth al loca t ion (DBA) control 'J module in the 0LT respectively process data belonging to the same group.
  • the GTC framing module receives the data from each packet, and multiplexes the PL0AM message (if any), the GEM block, and the BW authorization belonging to the same packet into the same downlink GTC frame by querying the 0NU registry. The packet number is filled in the GTC frame identification field and then sent out.
  • ONU 0NU2, 0NU3 belong to Groupl; 0NU4, 0 intestine, 0NU6 belong to Group2; 0 wish, 0NU8, 0NU9 belong to Group3. Then it will be sent to 0NU1, 0NU2, 0NU3, that is, all the data and related control information sent to Group1 are encapsulated in a GTC frame, and the GTC-ID is filled with Groupl, as shown in Table 6: All sent to 0NU1, 0NU2
  • 0EM3 belongs to GEM Port-ID GEM frame sent to 0NU1 or 0NU2 or all assigned to 0NU1, 0NU2
  • 0NU3's PLOAM message 0NU3 belongs to Alloc-ID's BWMap
  • the length of the last GEM frame sent to Group1 exceeds the GTC boundary, that is, the fixed time length of the GTC frame is 125 ⁇ ⁇ , fragmentation processing is required to ensure that the first fragment length is in GTC. In the range of the frame, the remaining fragment is transmitted in the GTC frame to which the next packet belongs.
  • the specific fragmentation technology is well-known in the art, and details are not described herein.
  • the 0NU performs a simple parsing of the received downlink GTC frame by the GNU frame filter of the ONU, and reads the frame overhead. And the filtering operation is performed: comparing the packet number carried in the identifier field in the downlink GTC frame with the packet number of the ONU, if the two do not match, discarding the GTC frame; if the two match, forwarding the GTC frame to
  • the GTC framing module processes the downlink information according to the prior art, and details are not described herein again.
  • the group number of the ONU may be stored in the storage unit of the ONU itself; or may be stored in other storage units in the point-to-multipoint optical access system to which the ONU belongs, as long as the ONU can access the other storage unit and obtain The group number is OK.
  • Upstream data processing When the 0NU sends an upstream GTC frame, it will be saved in the storage unit.
  • the 0NU packet number is padded into the identification field of the upstream GTC frame.
  • the specific location can be seen in Table 5.
  • the 0LT GTC framing module After receiving the uplink information sent by the 0NU, the 0LT GTC framing module determines the target processing module to be forwarded according to the packet number filled in the GTC frame identification field, and then demultiplexes the PLOAM message. (If there is this message upload), DBA message and GEM block, forward to the corresponding processing module.
  • PLOAM module DBA message and GEM block PLOAM module, DBA control module and GEM TC adapter module and packet - corresponding, for example, there are n packets in the system, corresponding to n processing PLOAM messages, DBA messages and GEM blocks Module.
  • the GTC framing module of the 0LT determines that the frame is from the group l according to the GTC-ID field of the GTC frame, that is, needs to be forwarded to the processing module that processes the group1, and demultiplexes the GTC frame. And then will solve The obtained PLOAM message (if any) is forwarded to the corresponding PL0AM1 module for processing, and the GEM block is forwarded to the corresponding GEM TC adapter 1 module for processing, and the DBA message is forwarded to the corresponding DBA control 1 module for processing.
  • the GTC frame is simply parsed, the processing module of the corresponding packet to be forwarded is determined, and the GTC frame is demultiplexed; but the demultiplexing may be performed first to determine the forwarding destination processing module. If the value of the GTC-ID is group2, the related information obtained by demultiplexing is forwarded to the corresponding PL0AM2 module, the GEM TC adapter 1 module, and the DBA control 1 module.
  • the PLOAM module, the GEM TC adapter module, and the DBA control module are identical to the prior art, and are not described here.
  • Embodiment 2 provides an optical line terminal, which is applicable to a point-to-multipoint optical access system: as shown in FIG. 5, the structure of the 0LT includes at least two PLOAM modules 502 and at least two DBA control modules. 504. At least two GEM TC adapter modules 503 and at least one GTC framing module 501. Specifically, each GTC framing module 501 corresponds to a target processing module of at least two groups, and the target processing module of each group only processes information of the corresponding group, including: a PL0AM module 502, a DBA control module 504, and a GEM TC adapter module 503. .
  • each group corresponding to the ONU has a corresponding one.
  • PL0AM module, DBA control module and GEM TC adapter module each PL0AM module, DBA control module or GEM TC adapter module only processes the information of its corresponding group.
  • the PL0AM1 module only processes PL0AM messages belonging to the group Group1;
  • the PL0AM2 module processes PL0AM messages belonging to the group Group2;
  • the DBA control module and the GEM TC adapter module are also the same.
  • Each grouped PL0AM module a PL0AM message for processing an uplink corresponding packet forwarded by the GTC framing module of the OLT (if there is a message upload); transmitting a downlink corresponding packet PL0AM message to be transmitted to the GTC framing of the 0LT Module to form a downlink signal.
  • Each grouped DBA control module is configured to process a DBA message of an uplink corresponding packet forwarded by the GTC framing module of the OLT; and send a downlink corresponding packet DBA control message to be sent to the GTC framing module of the 0LT to form a downlink signal.
  • Each grouped GEM TC adapter module is used to process the GEM block corresponding to the parsed packet. Encapsulate or decapsulate GEM frames.
  • the GEM block of the corresponding packet to be sent is sent to the GTC framing module to form a downlink signal.
  • the GTC framing module is configured to: after receiving the uplink GTC frame from the ONU, determine, according to the packet number filled in the received GTC frame identifier field, the target processing module to be forwarded, and the PL0AM message to be demultiplexed (if The message upload), the DBA message, and the GEM block are forwarded to the PL0AM module, the DBA control module, and the GEM TC adapter module that process the corresponding packet;
  • the 0LT can also include a 0NU packet module and a 0NU registry 505.
  • the 0NU packet module is configured to allocate a packet number for the 0NU when registering at 0NU.
  • the 0NU packet module can be located in any PL0AM module of the 0LT.
  • the 0NU packet module can also be located in a network management system other than 0LT or an upper processing module other than 0LT.
  • the 0NU registry is used to record the 0NU assigned packet number after the 0LT receives the 0NU allocation response message. Referring to Table 3, the 0NU registry includes at least the sequence number of 0NU and the group number to which it belongs. It may also include, but is not limited to, 0NU-ID, Al loc-ID, and GEM por t-ID assigned to 0NU.
  • the ONU registry can also be located in the network management system outside the OLT or in the processing module above the OLT.
  • the 0NU registry is flexible and can be implemented either in software or as a hardware module.
  • Embodiment 3 provides an optical network unit 0NU/optical network terminal 0NT.
  • 0NU optical network unit
  • the 0NU is applicable to a point-to-multipoint optical access system:
  • the structure of the 0NU provided in this embodiment includes a GTC frame filter 602 and a GTC framing module 601.
  • the GTC frame filter is used to perform simple parsing on the received downlink GTC frame, and the identifier field in the frame overhead is read, and the filtering operation is performed: comparing the packet number carried in the identifier field in the downlink GTC frame with the packet number of the ONU itself, if two If the difference is different, the GTC frame is discarded. If the two are the same, then The received GTC frame is forwarded to the GTC framing module for processing.
  • the GTC framing module is used by the ONU to fill the packet number of the ONU itself stored in the storage unit into the identifier field of the uplink GTC frame when transmitting the uplink GTC frame; and perform the GTC frame forwarded by the received GTC frame filter. Parse, demultiplex the PLOAM message (if there is a message upload), BW authorization message and GEM block, and forward it to the corresponding PLOAM module, DBA control module and GEM TC adapter module for processing.
  • the processing of the PLOAM module, the DBA control module, and the GEM TC adapter module are all prior art and will not be described here.
  • the 0NU may also include a storage unit 603 for holding the packet number of the ONU itself.
  • the initial value is G O (such as 0 or all 1).
  • G O such as 0 or all 1
  • the 0NU can obtain the packet number to which the 0NU belongs by accessing the storage unit.
  • the storage unit can also be located on the network management or other devices that the 0NU can access.
  • the storage unit should be a permanent storage unit that loses power and does not lose the stored information.
  • Embodiment 4 This embodiment provides a point-to-multipoint optical access system:
  • the point-to-multipoint optical access system includes an optical line terminal OLT, an optical network terminal 0NT/optical network unit 0NU belonging to different groups, an optical line terminal OLT, and an optical network belonging to different groups.
  • the terminal 0NT/optical network unit ONU is connected through the optical distribution network 0DN, the 0NU registry unit and the storage unit.
  • the 0LT is configured to group the 0NU when the 0NU is registered, and the packet number is sent to the corresponding ONU, and the PL0AM message belonging to the same packet to be delivered (if the message is delivered), the GEM block, and the BW authorization are multiplexed to In the same downlink GTC frame, the packet number is filled in the identification field to identify the packet of the GNU frame destination ONU, and then the GTC frame is sent out; after receiving the uplink GTC frame sent by the ONU, the 0LT GTC framing module Determining, according to the packet number filled in the GTC frame identification field, a target processing module of the corresponding packet to be forwarded, and forwarding the demultiplexed PL0AM message (if the message is uploaded), the DBA message, and the GEM block to the target of the corresponding group The processing module processes.
  • the 0NU GTC frame filter When the 0NU receives the GTC frame sent by the 0LT, the 0NU GTC frame filter receives the received
  • the GTC frame is filtered, and the packet number carried in the identifier field in the downlink GTC frame is compared with the ONU itself. If the two are different, the GTC frame is discarded. If the two are the same, the subsequent processing is performed.
  • the 0NU GTC framing module fills the ONU's own packet number into the uplink GTC frame. In the identity field, and send it out.
  • 0NU registry unit used for registering at 0NU, when 0LT receives the assignment response message of 0NU, records the sequence number of ONU and the packet number assigned to the ONU; and provides the ONU group number for the GTC framing module of 0LT Inquire.
  • the 0NU registry unit can be located inside the 0LT or in other devices of the point-to-multipoint optical access system, such as the network management or upper layer processing module.
  • the storage unit is configured to receive and save the 0NU assigned packet number delivered by the 0LT, and provide a query of the 0NU packet number for the GTC frame filter and the 0NU GTC framing module.
  • the storage unit can be located inside the 0NU or in other devices of the point-to-multipoint optical access system, such as a network management system.
  • the ONU is grouped, and the identifier field of the GTC frame overhead part is used to identify the ONU packet, which can support the high-hop ratio point-to-point optical access system, thereby increasing the network capacity, thereby reducing the single-user cost;
  • the scheme provided by the embodiment of the present invention can flexibly support a P0N system with a larger branch ratio, and supports seamless expansion (if the branch ratio is further expanded in the future, only the number of packets is increased); in addition, the information of the ONU can be alleviated.
  • the amount of processing reduces the unnecessary power consumption.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention porte sur un système d'accès optique point à multipoint et sur son procédé et son dispositif de transmission de données. Le système d'accès optique point à multipoint comprend un terminal de ligne optique (OLT) et de multiples unités de réseau optique (ONU) de groupes différents. Le procédé consiste à : dans l'OLT, selon la table d'enregistrement d'ONU qui enregistre le numéro de groupe distribué aux ONU, empaqueter les données et des informations de commande d'au moins une ONU ayant le même numéro de groupe dans une trame de protocole de convergence de transmission (GTC) de réseau optique passif Gigabit (GPON) et remplir le champ d'identification (ID) de la trame GTC par le numéro de groupe d'au moins une ONU; dans l'OLT, transmettre la trame GTC aux multiples ONU. Par groupage des ONU et identification des groupes d'ONU par utilisation du champ ID du surdébit de trame GTC, la présente invention peut permettre le support du système d'accès optique point à multipoint à taux de ramification élevé, et permettre l'augmentation de capacité du réseau, pour ainsi réduire le coût d'un utilisateur individuel.
PCT/CN2009/072303 2008-06-24 2009-06-16 Système d'accès optique point à multipoint et ses procédé et dispositif de transmission de données WO2009155832A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810068041A CN101616338A (zh) 2008-06-24 2008-06-24 一种点到多点光接入系统中数据传送的方法、设备和系统
CN200810068041.9 2008-06-24

Publications (1)

Publication Number Publication Date
WO2009155832A1 true WO2009155832A1 (fr) 2009-12-30

Family

ID=41444021

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/072303 WO2009155832A1 (fr) 2008-06-24 2009-06-16 Système d'accès optique point à multipoint et ses procédé et dispositif de transmission de données

Country Status (2)

Country Link
CN (1) CN101616338A (fr)
WO (1) WO2009155832A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101986719A (zh) * 2010-11-19 2011-03-16 杭州开鼎科技有限公司 Epon系统中注册帧的扩展方法
CN110858931A (zh) * 2018-08-22 2020-03-03 萨基姆宽带联合股份公司 一种用于将本地网络连接到光纤的电路
CN113993009A (zh) * 2020-07-27 2022-01-28 上海诺基亚贝尔股份有限公司 时间同步用于多域传输的方法、装置、olt及onu

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102316388B (zh) * 2010-07-09 2016-03-30 中兴通讯股份有限公司 一种无源光网络系统中的灵活QinQ实现方法及其装置
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
EP3255835A4 (fr) * 2015-05-25 2018-03-07 Huawei Technologies Co., Ltd. Procédé, dispositif et système de transmission de messages
CN110677747B (zh) * 2018-07-02 2022-04-05 中兴通讯股份有限公司 管理onu的方法、olt、onu、系统以及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1441573A (zh) * 2002-02-27 2003-09-10 日立电线株式会社 虚拟lan连接装置
CN101079801A (zh) * 2006-05-25 2007-11-28 华为技术有限公司 吉比特无源光网络系统中传输上行控制报文的方法
CN101174909A (zh) * 2007-11-16 2008-05-07 华为技术有限公司 一种无源光网络组播接入的控制方法、设备和系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1441573A (zh) * 2002-02-27 2003-09-10 日立电线株式会社 虚拟lan连接装置
CN101079801A (zh) * 2006-05-25 2007-11-28 华为技术有限公司 吉比特无源光网络系统中传输上行控制报文的方法
CN101174909A (zh) * 2007-11-16 2008-05-07 华为技术有限公司 一种无源光网络组播接入的控制方法、设备和系统

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101986719A (zh) * 2010-11-19 2011-03-16 杭州开鼎科技有限公司 Epon系统中注册帧的扩展方法
CN110858931A (zh) * 2018-08-22 2020-03-03 萨基姆宽带联合股份公司 一种用于将本地网络连接到光纤的电路
CN110858931B (zh) * 2018-08-22 2022-03-25 萨基姆宽带联合股份公司 一种用于将本地网络连接到光纤的电路
CN113993009A (zh) * 2020-07-27 2022-01-28 上海诺基亚贝尔股份有限公司 时间同步用于多域传输的方法、装置、olt及onu

Also Published As

Publication number Publication date
CN101616338A (zh) 2009-12-30

Similar Documents

Publication Publication Date Title
JP4169595B2 (ja) 可変長パケットを利用するポイントツーマルチポイント受動光ネットワーク
EP2164221B1 (fr) Procédé, système et dispositif pour une transmission de données de réseau optique passif
KR101236903B1 (ko) 수동 광 네트워크를 위한 업스트림 효율 개선 방법
US8315520B2 (en) Method, system and apparatus for transmitting data
US8457494B2 (en) PON multicast communication system, multicast management method, and corresponding devices
US9793993B2 (en) Method and apparatus of delivering upstream data in ethernet passive optical network over coaxial network
WO2012048643A1 (fr) Procédé et système de déploiement de pon, et dispositif relais de mise en oeuvre de ce procédé
US8526818B2 (en) Optical network terminal of the gigabit passive optical network and frame treatment method of the ONT
TWI725274B (zh) 資料通信系統、光線路終端及基帶單元
KR20040025354A (ko) 이더넷 수동형광가입자망에서 오에이엠 기능 디스커버리방법
CN101983487A (zh) 适用于下一代接入的吉比特无源光网络传输汇聚扩展
WO2011035602A1 (fr) Procédé et système de mise en oeuvre de flux d'enregistrement d'un réseau optique passif de l'ordre du gigabit
WO2010020130A1 (fr) Dispositif de multiplexage à ajout/abandon de paquet et procédé de transmission de données d'un dispositif de multiplexage à ajout/abandon de paquet
WO2009121275A1 (fr) Procédé, équipement et système de traitement de transmission pour réseau optique
CN102292925B (zh) 用于动态均衡延迟无源光网络的方法和系统
WO2009155832A1 (fr) Système d'accès optique point à multipoint et ses procédé et dispositif de transmission de données
EP2501058B1 (fr) Dispositif pour intégration d'unités de réseau optique
WO2017049460A1 (fr) Procédé, dispositif et système d'enregistrement d'unité de réseau optique
WO2009121308A1 (fr) Procédé, équipement, et système, adaptés pour le traitement de données de réseau optique
CN107302397A (zh) 无源光网络架构及其实现数据传输的方法和光网络设备
WO2011006403A1 (fr) Procédé et système de transmission de données et nœud de périphérie de fournisseur
JP4413797B2 (ja) 受動型光ネットワークシステム
WO2012149770A1 (fr) Procédé, dispositif et système de conversion d'identificateurs de dispositif terminal
WO2021073406A1 (fr) Procédé de transmission de données de service, appareil associé et puce de traitement numérique
KR100957046B1 (ko) 기가비트 수동형 광 가입자망의 지이엠 모드에서 버추얼포트기반 스위칭을 위한 이더넷 프레임 구조 및 이를이용한 스위칭 방법

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09768757

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09768757

Country of ref document: EP

Kind code of ref document: A1