WO2011006403A1 - Procédé et système de transmission de données et nœud de périphérie de fournisseur - Google Patents

Procédé et système de transmission de données et nœud de périphérie de fournisseur Download PDF

Info

Publication number
WO2011006403A1
WO2011006403A1 PCT/CN2010/073711 CN2010073711W WO2011006403A1 WO 2011006403 A1 WO2011006403 A1 WO 2011006403A1 CN 2010073711 W CN2010073711 W CN 2010073711W WO 2011006403 A1 WO2011006403 A1 WO 2011006403A1
Authority
WO
WIPO (PCT)
Prior art keywords
xpon
mac frame
pon
frame
physical layer
Prior art date
Application number
PCT/CN2010/073711
Other languages
English (en)
Chinese (zh)
Inventor
郑若滨
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 WO2011006403A1 publication Critical patent/WO2011006403A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers

Definitions

  • the application is submitted to the Chinese Patent Office on July 15, 2009, and the application number is 200910152000. 2.
  • the invention name is "a data transmission method, system and related equipment", And, on August 14, 2009, the Chinese Patent Office, the application number is 200910167099.3, the priority of the invention is "a data transmission method, system and operator edge node", the entire contents of which are incorporated by reference.
  • the present invention relates to the field of communications, and in particular, to a data transmission method and system, and an operator edge node.
  • the Passive Optical Network (P0N) technology is a point-to-multipoint optical access technology, which consists of an Optical Network Unit (ONU), an optical splitter, and an optical path termination point (0LT).
  • 0LT is used as the central office equipment. It is connected to the optical splitter through a trunk fiber. The optical splitter is connected to each ONU through a separate branch fiber. In the downstream direction, the optical splitter realizes the splitting function. The downlink optical signal of the 0LT is sent to all the ONUs. In the uplink direction, the optical splitter implements the optical signal convergence function, and all the optical signals transmitted by the ONU are aggregated and sent to the 0LT through the trunk optical fiber.
  • P0N Passive Optical Network
  • Asynchronous Transfer Mode Asynchronous Transfer Mode
  • BP0N Broadband Passive Optical Network
  • BP0N Broadband Passive Optical Network
  • P0N To Ethernet Passive Optical Network (EP0N, Ethernet PON), Gigabit Passive Optical Network (GP0N, Gigabit PON), 10G EP0N and 10G GP0N, the transmission bandwidth is increasing.
  • the transmission distance of the PON is usually less than 20 kilometers.
  • a data transmission method in the prior art is:
  • the P0N is carried on a Wavelength Division Multiplexing (WDM) network by means of placing the P0N in an optical transport network (0TN, Optical Transport Network), that is, a PON over 0TN, and extending the optical network unit (ONU, Transmission distance between the Optical Network Unit and the Optical Line Termination (OLT).
  • WDM Wavelength Division Multiplexing
  • WDM uses the P2P (Point to Point) technology of color light, that is, whether the WDM device close to the ONU or the WDM device close to the 0LT is colored, it needs to be provided for each wavelength on the WDM device.
  • An optical transceiver, and P2P fiber cannot be shared, so the cost of such a data transmission process is relatively high.
  • P0N for example, GP0N/EP0N
  • P0N usually adopts burst mode.
  • Optical transmission is performed, and the existing 0TN uses WDM equipment for continuous mode optical transmission. Therefore, the data transmission mode of PON over 0TN needs to support burst mode to continuous mode conversion, which is complicated to implement.
  • Embodiments of the present invention provide a data transmission method and system, and an operator edge node, which can effectively reduce data transmission cost, extend optical transmission distance, and reduce implementation complexity.
  • a data transmission method provided by the embodiment of the present invention includes: processing a physical layer signal of a passive optical network P0N to obtain a P0N medium access control MAC frame; processing the PON MAC frame to obtain a next generation passive optical network xPON medium Accessing a control MAC frame, the PON MAC frame is located in a load of the xPON MAC frame; performing xPON physical layer processing on the xPON MAC frame to obtain an xPON physical layer signal, and transmitting the xPON physical layer signal.
  • Another data transmission method provided by the embodiment of the present invention includes: processing an xPON physical layer signal to obtain an xPON MAC frame; reading data in a load of the xPON MAC frame; according to a frame header of the xPON MAC frame The data in the load of the xPON MAC frame is processed to obtain a PON MAC frame; the P0N physical layer processing is performed on the PON MAC frame to obtain a P0N physical layer signal, and the P0N physical layer signal is sent.
  • a data transmission system includes: a user edge node, configured to receive data sent by a user terminal side, and send the data to an operator edge node; the operator edge node is used to
  • the P0N physical layer signal in the data is processed to obtain a PON MAC frame, and the PON MAC frame is processed to obtain an xPON MAC frame, where the PON MAC frame is located in a load of the xPON MAC frame, and the xPON MAC frame is performed.
  • the xPON physical layer processes the xPON physical layer signal and transmits the xPON physical layer signal.
  • Another data transmission system includes: an operator edge node, configured to process an xPON physical layer signal in the received data to obtain an xPON MAC frame, and read a load of the xPON MAC frame. Data, processing data in the load of the xPON MAC frame according to the frame header of the xPON MAC frame to obtain a P0N MAC frame, performing P0N physical layer processing on the PON MAC frame to obtain a P0N physical layer signal, and transmitting the a P0N physical layer signal; a user edge node, configured to receive a P0N physical layer signal sent by the operator edge node.
  • An operator edge node provided by the embodiment of the present invention includes: a P0N physical layer processing unit, configured to process a P0N physical layer signal to obtain a PON MAC frame; and a framing processing unit, configured to process the PON MAC frame Obtaining an xPON MAC frame, where the PON MAC frame is located in a load of the xPON MAC frame, and an xPON physical layer processing unit, configured to perform xPON physical layer processing on the xPON MAC frame to obtain an xPON physical layer signal, and concurrently Sending the xPON physical layer signal.
  • Another carrier edge node includes: an xPON physical layer processing unit, configured to process an xPON physical layer signal to obtain an xPON MAC frame; and a framing processing unit, configured to read the xPON MAC frame Data in the load, processing data in the load of the xPON MAC frame according to the frame header of the xPON MAC frame to obtain a PON MAC frame; a P0N physical layer processing unit, configured to perform P0N physical on the PON MAC frame The layer processing obtains the P0N physical layer signal and transmits the P0N physical layer signal.
  • Another data transmission method provided by the embodiment of the present invention includes: processing service layer data to obtain a passive optical network P0N media access control MAC frame; processing the PON MAC frame to obtain a next generation passive optical network xPON medium Accessing a control MAC frame, the PON MAC frame is located in a load of the xPON MAC frame; performing xPON physical layer processing on the xPON MAC frame to obtain an xPON physical layer signal, and transmitting the xPON physical layer signal.
  • Another data transmission method provided by the embodiment of the present invention includes: processing a received xPON physical layer signal to obtain an xPON MAC frame; reading data in a load of the xPON MAC frame; according to the frame of the xPON MAC frame The header processes the data in the payload of the xPON MAC frame to obtain a PON MAC frame; processing the PON MAC frame to obtain service layer data and transmitting the service layer data.
  • Another carrier edge node includes: at least one PON MAC layer processing unit, configured to process the service layer data to obtain a PON MAC frame; and a first xPON MAC layer processing unit, configured to: The PON MAC frame is processed to obtain an xPON MAC frame, where the PON MAC frame is located in the load of the xPON MAC frame, and the xPON physical layer processing unit is configured to perform xPON physical layer processing on the xPON MAC frame to obtain an xPON physical layer signal. And transmitting the xPON physical layer signal.
  • the technical solution of the embodiment of the present invention can carry a P0N media access control (MAC) frame to the load of the xPON MAC frame, and transmit the xPON MAC frame through the xPON physical layer, so that the data transmission mode of the PON over xPON can be implemented.
  • MAC media access control
  • the xONU device close to the 0NU replaces the WDM device, the xONU device is usually colorless, that is, there is no need to provide an optical transceiver for each wavelength on the xONU, and if P2MP (Point to multipoint, point to multipoint) is used
  • P2MP Point to multipoint, point to multipoint
  • the xPON can also realize the sharing of optical fibers, so it can effectively extend the optical transmission distance and reduce the data transmission cost.
  • FIG. 1 is a schematic structural diagram of a data transmission scheme according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of an embodiment of a data transmission method according to an embodiment of the present invention
  • 3 is a schematic diagram of another embodiment of a data transmission method according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram of another embodiment of a data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another embodiment of a data transmission method according to an embodiment of the present invention.
  • FIG. 6( a) is a schematic diagram of a PON MAC frame segmentation in an embodiment of the present invention.
  • FIG. 6(b) is a schematic diagram of PON MAC frame recombination according to an embodiment of the present invention.
  • FIG. 7(a) to 7(c) are schematic diagrams of processing a frame header in an embodiment of the present invention.
  • FIG. 8( a) is a schematic diagram of a PON MAC frame segmentation according to an embodiment of the present invention.
  • FIG. 8(b) is a schematic diagram of PON MAC frame recombination according to an embodiment of the present invention.
  • 9(a) to 9(c) are schematic diagrams of processing a frame header in an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of an embodiment of a data transmission system according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of an embodiment of an operator edge node according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of another embodiment of an operator edge node according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of another embodiment of a data transmission method according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of another embodiment of a data transmission method according to an embodiment of the present invention.
  • 15 is a schematic diagram of another embodiment of an operator edge node according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of an xPON MAC frame according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention provide a data transmission method, system, and carrier edge, which are used to reduce data transmission costs and reduce implementation complexity.
  • the solution of the embodiment of the present invention provides a data transmission method of PON over xPON, in which different PON networks are nested, for example, GP0N and next-generation PON (NG-P0N) are nested, where 0NU and 0LT are GP0N devices, and xONU and xOLT are NG-P0N equipment.
  • PON networks for example, GP0N and next-generation PON (NG-P0N) are nested, where 0NU and 0LT are GP0N devices, and xONU and xOLT are NG-P0N equipment.
  • FIG. 1 is a schematic structural diagram of a data transmission scheme according to an embodiment of the present invention.
  • PON n is used to indicate the PON MAC header of the next-level network (for example, TC frame/GEM frame/EP0N MAC frame), and "PON n+1" is used to indicate the PON MAC header of the upper-level network.
  • the next-level network is represented as P0N in this embodiment
  • the upper-level network is represented as xP0N in this embodiment
  • the xPON may be NG-P0N (such as NG-GP0N, NG-EP0N) or WDM PON, PON over xPON ( The PON is carried over xPON) to implement different PON network nesting.
  • xONU and xOLT can be owned by the first operator
  • 0LT1 can be owned by the second operator
  • 0LT2 can be owned by the third operator
  • the xPON network can be used for multiple operators. Shared.
  • xOLT and OLTl-OLTn can be implemented on the same physical device.
  • the Customer Edge Node (CE-Node, Customer Edge Node) is usually composed of 0NU/0NT/0LT of the next-level network and is located at the edge of the user network.
  • the Provider Edge Node is usually composed of xONU/xOLT devices and is located at the edge of the carrier network. It is used to add the xPON connection identifier (PON n+1 added) or remove the xPON connection identifier (P0N n+1). Removed ) to aggregate the PON-based connection between the CE-Node and the CE-Node (PON-based Connection, hereinafter referred to as the P0N connection), and the xPON-based tunnel between the PE-Node and the PE-Node (xPON) -based Tunnel ), which ultimately forms a complete P0N-based connection between the CE-Node and the CE-Node.
  • PON n+1 added
  • P0N n+1 xPON connection identifier
  • the data transmission of the PON over xPON in the embodiment of the present invention is divided into uplink transmission from the CE node to the PE node and downlink transmission from the PE node to the CE node, which are respectively introduced below:
  • an embodiment of a data transmission method in an embodiment of the present invention includes:
  • the PE node processes the P0N physical layer signal sent by the CE node to obtain the PON MAC frame.
  • the PON MAC frame in this embodiment may be a Transmission Convergence (TC) frame, a Gigabit Passive Optical Network Encapsulation Method (GEM), or an EP0N MAC frame, or other
  • TC Transmission Convergence
  • GEM Gigabit Passive Optical Network Encapsulation Method
  • EP0N MAC frame or other
  • a type of PON MAC frame is not limited herein.
  • the process of the PE node processing the P0N physical layer signal to obtain the PON MAC frame is a common knowledge of the person skilled in the art, which is not limited herein.
  • the PON MAC frame may be processed to obtain an xPON MAC frame, and the PON MAC frame may be carried in the xPON MAC frame.
  • the specific processing manner will be described in detail in the subsequent embodiments.
  • the xPON MAC frame is processed by the xPON physical layer to obtain the xPON physical layer signal, and the xPON physical layer signal is sent to the PE node at the other end, so that the PON MAC frame can be carried.
  • xPON MAC frames are transmitted in xPON.
  • the PE node may carry the PON MAC frame in the load of the xPON MAC frame, that is, according to the PON MAC.
  • the frame generates an xPON MAC frame, and the xPON MAC frame is transmitted through the xPON physical layer, so that the data transmission mode of the PON over xPON can be realized, the optical transmission distance is extended, and the data transmission cost is reduced; and the data transmission mode of the PON over xPON in this embodiment There is no need to support burst mode to continuous mode conversion, which can reduce implementation complexity.
  • another embodiment of the data transmission method in the embodiment of the present invention includes:
  • Step 301 in this embodiment is the same as step 201 in the embodiment shown in FIG. 2, and details are not described herein again.
  • the length of the PON MAC frame can be determined after the PON MAC frame is acquired.
  • a length threshold is set in advance, and the length threshold includes a maximum length threshold and a minimum length threshold, and the length threshold may be related to the load size of the xPON MAC frame, or may be related to other parameters, which is not limited herein.
  • the length can be compared to the maximum length threshold and the minimum length threshold.
  • the specific comparison process can be:
  • the PON MAC frame is segmented, and the length of each segment of the P0N MAC frame is greater than or equal to the minimum length threshold.
  • the xPON MAC frame may be generated according to the segmented or reassembled data.
  • the specific generation process may be:
  • the reassembled PON MAC frame is completely mapped to the load of the xPON MAC frame.
  • the full mapping described herein refers to completely copying the frame header and payload of the PON MAC frame to the xPON MAC. a portion of the load of the frame;
  • each PON MAC frame includes the frame header of the PON MAC frame and the respective segment payload, and then each segmented PON MAC frame is mapped separately.
  • To different xPON The load of the MAC frame;
  • an xPON MAC frame is generated by adding a frame header to the payload of the xPON MAC frame.
  • the frame header is a TC frame header. If the PON MAC frame is a GEM frame, the frame header is a GEM frame header, and if the PON MAC frame is an EPON MAC frame, The frame header is an EPON MAC frame preamble;
  • the frame header is an xGEM frame header, which includes a PLI (PDU Length Indicator), a port identifier (Port ID), and a payload type indication (PTI, PDU Type Indicator). Service Type (Type) and Header Error Control (HEC), where Port ID indicates the PON port identifier.
  • PLI PDU Length Indicator
  • PDU ID port identifier
  • PTI PDU Type Indicator
  • PTI PDU Type Indicator
  • PDU Type Indicator Service Type
  • HEC Header Error Control
  • the least significant bit of the PTI is used to indicate whether the GEM data frame is the last segment in the segmentation process. For example, setting the PTI to "000" indicates that the segment is not the last segment, assuming PTI is "001" Indicates that the segment is the last segment.
  • a domain of the frame header of the xGEM (such as a PTI field) is used to indicate that the PON MAC frame is reassembled. For example, when the PTI is 111, the load of the xGEM is a reassembly of multiple PON MAC frames.
  • a domain of the xGEM frame header (such as a Type field) may be used to indicate a payload service type of the xGEM frame.
  • the payload may be a TC/GEM frame of the GP0N or an LLID identifier of the EP0N.
  • the EPON MAC frame may also be a TC/xGEM frame of the NG-GP0N or an NG-EP0N MAC frame identified by the LLID of the NG-EP0N.
  • the frame header is an Ethernet MAC frame header with an NG-EP0N frame preamble.
  • the payload service type of the NG-EP0N MAC frame may also be indicated by extending a certain field of the frame header of the NG-EP0N MAC frame, such as an EthernetType (domain type) field or a subtype (subtype) field.
  • the payload may be a TC/GEM frame of the GP0N or an EPON MAC frame identified by the LLID of the EP0N, or a TC/xGEM frame of the NG-GP0N or an NG-EP0N MAC frame identified by the LLID of the NG-EP0N.
  • the NG-EP0N MAC frame preamble may be used to indicate reassembly of the PON MAC frame.
  • the PON MAC frame before processing by the PE node may be referred to as "C-P0N (Customer P0N)", and the corresponding GP0N encapsulation mode port identifier (GPID, GEM Port ID) / logical link identifier (LLID, Logical) Link Identifier) is the inner connection identifier (ie PON-based Connection), GP0N is called “C-GEM (Customer GEM or Inner GEM)", and EPON is called “C-LLID (Customer LLID or Inner LLID)” ;
  • the xPON MAC frame processed by the PE node may be referred to as "S-P0N (Service PON)", the added xPON connection identifier is the outer connection identifier (ie, the xPON-based Tunnel identifier), and the NG-GP0N is called “S- GEM (Service GEM or Outer GEM)", for NG-EP0N called “S-LLID (Service LLID or Outer LLID) ".
  • S-P0N Service PON
  • the added xPON connection identifier is the outer connection identifier (ie, the xPON-based Tunnel identifier)
  • the NG-GP0N is called “S- GEM (Service GEM or Outer GEM)”
  • S-LLID Service LLID or Outer LLID
  • the GEM frame is a C-GEM frame
  • the EPON MAC frame is the frame where the C-LLID is located
  • the xGEM frame is the S-GEM frame
  • the NG-EPON MAC frame is the frame where the S-LLID is located.
  • an xGEM frame header may be added to the PON MAC frame to obtain an xGEM frame, and a PON-based Connection may be aggregated into the xPON-based tunnel, thereby implementing a TC/GEM/EPON MAC frame over xGEM (TC/ GEM frame/EPON MAC frame is carried in xGEM frame);
  • an Ethernet frame header with an NG-EPON MAC frame preamble can be added to the PON MAC frame to obtain an NG-EPON MAC frame, and the PON-based Connection is aggregated into the xPON-based Tunnel to implement the TC. /GEM/EPON MAC frame over NG-EPON MAC frame.
  • Step 304 in this embodiment is the same as step 203 in the embodiment shown in FIG. 2, and details are not described herein again.
  • the PE node xONU can reassemble or segment the PON MAC frame, generate an xPON MAC frame according to the reassembled or segmented data, and transmit the xPON MAC frame through the xPON physical layer, thereby implementing PON over xPON data.
  • the transmission mode because the xONU device close to the 0NU replaces the WDM device in the 0TN, and the xONU device is usually colorless, and does not need to provide an optical transceiver for each wavelength on the xONU, thereby effectively extending the optical transmission distance.
  • the data transmission cost of the PON over xPON in this embodiment does not need to support the transition from the burst mode to the continuous mode, which can reduce the implementation complexity.
  • another embodiment of the data transmission method in the embodiment of the present invention includes:
  • the PE node processes the received xPON physical layer signal to obtain an xPON MAC frame.
  • the xPON MAC frame in this embodiment may be an xTC frame (a TC frame of an NG GP0N), an xGEM frame, an NG-EPON MAC frame, or another type of xPON MAC frame, which is not limited herein.
  • the process of processing the received xPON physical layer signal by the PE node to obtain the xPON MAC frame is a common knowledge of those skilled in the art, which is not limited herein.
  • the PON MAC frame After obtaining the xPON MAC frame, in order to implement downlink transmission from the PE to the CE, the PON MAC frame needs to be acquired from the xPON MAC frame, because in the uplink transmission from the CE to the PE, the PON MAC frame is located in the load of the xPON MAC frame. Medium, so the data in the payload of the xPON MAC frame can be read first.
  • the PON MAC frame can be read from the frame header of the xPON MAC frame, and the specific manner will be described in detail in the following embodiments.
  • the PON MAC frame can be processed by the P0N physical layer.
  • the P0N physical layer signal transmits the P0N physical layer signal to the CE node, so that the PON MAC frame can be transmitted from the xPON to the P0N.
  • the PE node reads the PON MAC frame from the load of the xPON MAC frame, and transmits the P0N MAC frame through the P0N physical layer, thereby implementing the data transmission mode of the PON over xPON, extending the optical transmission distance, and reducing the data transmission. Cost; and the data transmission mode of the PON over xPON in this embodiment does not need to support the transition from burst mode to continuous mode, and the implementation complexity can be reduced.
  • another embodiment of the data transmission method in the embodiment of the present invention includes:
  • the PE node xONU acquires an xPON physical layer signal transmitted from the PE node xOLT at the other end, and processes the xPON physical layer signal to obtain an xPON MAC frame.
  • 502 ⁇ 503 segment or reassemble data in the payload of the xPON MAC frame according to the frame header of the xPON MAC frame, and delete the frame header of the xPON MAC frame to obtain the PON MAC frame.
  • the PE node xONU After acquiring the data in the payload of the xPON MAC frame, the PE node xONU can segment or reassemble the data in the payload of the xPON MAC frame according to the frame header of the xPON MAC frame, and delete the frame header of the xPON MAC frame.
  • the IJ P0N MAC frame To the IJ P0N MAC frame, there are the following cases:
  • the frame header of the xPON MAC frame indicates that the payload is a PON MAC frame, and the load of one xPON MAC frame includes multiple complete PON MAC frames
  • the frame header of the xPON MAC frame is deleted, and according to the load of the xPON MAC frame
  • the header of the PON MAC frame segments the data in the payload of the xPON MAC frame to obtain multiple PON MAC frames:
  • a domain of the xGEM frame header (such as a Type field) may be used to indicate the payload service type of the xGEM frame, or by extending a certain field of the frame header of the NG-EPON MAC frame, such as an EthernetType domain. Or subtype (subtype) field, to indicate the payload service type of the NG-EPON MAC frame.
  • the received xPON MAC frame is an xGEM frame
  • the PTI in the frame header of the xGEM frame is 111
  • a plurality of PON MAC frames can be determined by dividing the header of the PON MAC frame in the payload of the xGEM frame.
  • the received xPON MAC frame is an xGEM frame
  • the PTI in the frame header of the xGEM frame is 000
  • the PTI is 001
  • the frame header of the xGEM frame is deleted, and the data of the load is combined and combined to obtain a PON MAC frame.
  • the foregoing xPON MAC frame may be an xGEM frame, or an NG-EP0N MAC frame
  • the foregoing P0N MAC frame may be a TC frame, or a GEM frame, or an EP0N MAC frame.
  • the xGEM frame header may be removed from the xGEM frame processed by the xPON physical layer, and the PON-based Connection may be separated from the xPON-based tunnel, thereby implementing the TC/GEM/EP0N MAC frame over xGEM.
  • TC/GEM frame/EP0N MAC frame is carried in xGEM frame
  • the NG-EP0N MAC frame preamble can be deleted from the NG-EP0N MAC frame processed by the NG-EP0N physical layer to obtain the TC/GEM frame/EP0N MAC frame, which is sent out from the xPON-based tunnel.
  • PON-based Connection thus implementing TC/GEM/EP0N MAC frame over NG-EP0N MAC frame.
  • Step 504 in this embodiment is the same as step 404 in the embodiment shown in FIG. 4, and details are not described herein again.
  • the xONU receives the xPON physical layer signal from the xOLT, converts the xPON physical layer signal into an xPON MAC frame, reads the PON MAC frame from the load of the xPON MAC frame, and transmits the P0N MAC through the P0N physical layer.
  • the frame can implement the data transmission mode of PON over xPON, and since the xONU device close to the ONU replaces the WDM device in the 0TN, and the xONU device is usually colorless, there is no need to provide an optical transceiver for each wavelength on the xONU. Therefore, the optical transmission distance can be effectively extended, and the data transmission cost can be reduced; and the data transmission mode of the PON over xPON does not need to support the transition from the burst mode to the continuous mode, which can reduce the implementation complexity.
  • the PON MAC frame is a TC/GEM/EP0N MAC frame
  • the xPON MAC frame is an xGEM frame
  • Step a2 in this embodiment may include two steps of mapping and framing:
  • Figure 6 (a) shows the schematic diagram of the segmentation process.
  • the TC/EPON MAC frame is divided into multiple segments, and the TC/EPON MAC of each segment.
  • the frame data is respectively mapped to a load portion of an xGEM frame, and each segment is duplicated with a TC frame header/EPON MAC frame preamble;
  • Figure 6 (b) shows a schematic diagram of reassembly processing. Multiple TC/EPON MAC frames are simply combined, and their respective TC header/EPON MAC frame preambles are reserved and mapped to the payload portion of an xGEM frame.
  • Each segment or reassembly adds an xGEM frame header to form an xGEM frame.
  • the TC/GEM/EPON MAC frame data of each segment or reassembly is mapped to the payload part of the xGEM frame, and then the xGEM frame header is added, and the Type field is filled in to indicate that the load is TC/ GEM/EPON MAC frame, fill in the PTI to indicate segmentation or reassembly, that is, constitute an xGEM frame.
  • the TC/GEM/EPON MAC frame is processed by the P0N physical layer and sent to the CE.
  • the frame header of the xGEM frame needs to be processed in both the uplink and downlink directions.
  • the specific processing procedure can be as shown in Figure 7 (a) to Figure 7 (c):
  • Figure 7 (a) shows the uplink data transmission mode of EPON MAC over xGEM (similar to the downlink), where xONU does the processing of adding xGEM headers, and xOLT does the processing of removing xGEM headers.
  • Figure 7 (b) shows the uplink data transmission mode of TC over xGEM.
  • the xONU performs the processing of adding the xGEM frame header, and the xOLT performs the processing of removing the xGEM frame header.
  • Figure 7 (c) shows the downlink data transmission mode of TC over xGEM, where xOLT does the processing of adding xGEM frame headers, and xONU does the processing of removing xGEM frame headers.
  • the PON MAC frame is a TC/GEM/EPON MAC frame
  • the xPON MAC frame is an NG-EP0N MAC frame
  • Step a2 in this embodiment may include two steps of mapping and framing:
  • FIG. 8( a ) is a schematic diagram of segmentation processing, and the TC/GEM frame is divided into multiple segments, and the TC/GEM frames of each segment are shown. The data is mapped to the payload portion of an NG-EPON MAC frame, and each segment is duplicated with a TC/GEM frame header.
  • Figure 8 (b) shows a schematic diagram of the reassembly process. Multiple TC/GEM frames are simply combined, and the respective TC/GEM frame headers are reserved and mapped to the payload portion of an NG-EPON MAC frame.
  • A22 Add an Ethernet frame header with an NG-EPON MAC frame preamble for each segment or reassembly, fill in the EthernetType field to indicate that the payload is a TC/GEM/EP0N MAC frame, and modify the preamble to indicate segmentation or reassembly to form an NG. - EPON MAC frame.
  • each segment or recombined TC/GEM frame data is mapped to NG-EP0N.
  • the payload portion of the MAC frame is further added with an Ethernet frame header with an NG-EPON MAC frame preamble, which constitutes an NG-EP0N MAC frame.
  • An NG-EPON MAC frame preamble includes LLID delimiter start (SLD, 8 bits), LLID (16 bits), and cyclic redundancy check (CRC, 8 bits).
  • Ethernet frame header with the NG-EPON MAC frame preamble is removed to obtain the TC/GEM/EP0N MAC frame.
  • the frame header of the NG-EPON MAC frame needs to be processed in both the uplink and downlink directions.
  • the specific processing procedure can be as shown in Figure 9 (a) to Figure 9 (c):
  • Figure 9 (a) shows the uplink data transmission mode of the GEM over NG-EPON MAC (similar to the downlink).
  • the xONU adds the NG-EPON MAC header, and the xOLT removes the NG-EP0N MAC header.
  • Figure 9 (b) shows the uplink data transmission mode of TC over NG-EPON MAC, where xONU adds NG-EP0N
  • xOLT does the processing of removing the NG-EPON MAC frame header.
  • Figure 9 (c) shows the downlink data transmission mode of the TC over NG-EPON MAC.
  • the xOLT performs the processing of adding the NG-EP0N MAC frame header, and the xONU performs the processing of removing the NG-EPON MAC frame header.
  • the data transmission system in the embodiment of the present invention includes:
  • the user edge node 1001 is configured to receive data sent by the user terminal, and pass the data through the P0N physical layer. The number is sent to the operator edge node 1002;
  • the operator edge node 1002 is configured to process the P0N physical layer signal sent by the user edge node 1001 to obtain a PON MAC frame sent by the user edge node 1001, and process the PON MAC frame to obtain an xPON MAC frame, so that the PON MAC frame is located at the xPON MAC.
  • the xPON physical layer is processed by the xPON physical layer to obtain the xPON physical layer signal, and the xPON physical layer signal is transmitted.
  • the user edge node 1001 may include 0NU and 0LT
  • the operator edge node 1002 may include xOUN and x0LT.
  • the PON MAC frame and the xPON MAC frame in this embodiment have the same meanings as the PON MAC frame and the xPON MAC frame in the foregoing embodiment, and are not described herein again.
  • the uplink data transmission mode of the user edge node 1001 to the operator edge node 1002 is described in this embodiment.
  • the following describes the downlink data transmission mode from the operator edge node 1002 to the user edge node 1001.
  • the present invention is also provided.
  • Another embodiment of the communication system in the embodiment includes:
  • the operator edge node 1002 is configured to process the received xPON physical layer signal to obtain an xPON MAC frame, read data in a load of the xPON MAC frame, and use data in a load of the xPON MAC frame according to a frame header of the xPON MAC frame. Processing to obtain a PON MAC frame, performing a P0N physical layer processing on the PON MAC frame to obtain a P0N physical layer signal, and transmitting a P0N physical layer signal;
  • the user edge node 1001 is configured to receive a P0N physical layer signal sent by the operator edge node 1002.
  • the user edge node 1001 may include 0NU and 0LT
  • the operator edge node 1002 may include xOUN and x0LT.
  • the PON MAC frame and the xPON MAC frame in this embodiment are the PON MAC frame and the xPON in the foregoing embodiment.
  • the operator edge node 1002 can convert the PON MAC frame and the xPON MAC frame to each other, and can transmit the xPON MAC frame through the xPON physical layer and transmit the PON MAC frame through the P0N physical layer, thereby realizing
  • the data transmission mode of the PON over xPON extends the optical transmission distance and effectively reduces the data transmission cost. Moreover, the data transmission mode of the PON over xPON in this embodiment does not need to support the burst mode to the continuous mode conversion, which can reduce the implementation complexity.
  • an embodiment of a carrier edge node in the embodiment of the present invention includes:
  • the P0N physical layer processing unit 1101 is configured to process a P0N (for example, GP0N or EP0N) physical layer signal to obtain a PON MAC frame.
  • a P0N for example, GP0N or EP0N
  • a framing processing unit 1103, configured to process a PON MAC frame to obtain an xPON MAC frame, and a PON MAC frame bit In the load of the xPON MAC frame;
  • an xGEM frame header can be added to a PON MAC frame to obtain an xGEM frame, and a PON-based Connection can be aggregated into an xPON-based tunnel to implement a TC/GEM/EPON MAC frame over xGEM (TC/GEM frame/EPON).
  • the MAC frame is carried in the xGEM frame);
  • an Ethernet frame header with an NG-EPON MAC frame preamble can be added to the PON MAC frame to obtain an NG-EPON MAC frame, and the PON-based Connection is aggregated into the xPON-based tunnel.
  • the xPON physical layer processing unit 1104 is configured to perform xPON (for example, 10G-GP0N or 10G-EP0N) physical layer processing on the xPON MAC frame, obtain an xPON physical layer signal, and send the xPON physical layer signal.
  • xPON for example, 10G-GP0N or 10G-EP0N
  • the multiplexing unit 1102 is configured to segment or reassemble the PON MAC frame according to the relationship between the length of the PON MAC frame obtained by the P0N physical layer processing unit 1101 and the preset length threshold, and the segmented or reassembled PON MAC The frame is sent to the framing processing unit 1103 for processing.
  • the uplink data transmission mode from the CE node to the PE node is described.
  • the following describes a specific application scenario:
  • the P0N physical layer processing unit 1101 processes the P0N physical layer signal to obtain the P0N MAC frame.
  • the multiplexing unit 1102 can determine its length, compare the length with a preset maximum length threshold and a minimum length threshold, and segment or reassemble the PON MAC frame according to the comparison result.
  • the maximum length threshold and the minimum length threshold are preset values, which are related to the actual application, and are not limited herein.
  • the framing processing unit 1103 may generate an xPON MAC frame according to the segmented or recombined data, and the specific generation process is described in the foregoing method embodiment shown in FIG. The generation process is consistent and will not be described here.
  • the xPON physical layer processing unit 1104 can perform the xPON physical layer processing on the xPON MAC frame to obtain the xPON physical layer signal, and send the xPON physical layer signal, thereby implementing carrying the PON.
  • the xPON MAC frame of the MAC frame is transmitted in xPON.
  • the multiplexing unit 1102 may reassemble or segment the P0N MAC frame, and the framing processing unit 1103 Generating an xPON MAC frame according to the reassembled or segmented data, and the xPON physical layer processing unit 1104 transmits the xPON MAC frame through the xPON physical layer, so that the data transmission mode of the PON over xPON can be implemented, and the data transmission cost is effectively reduced; In the example, the data transmission mode of PON over xPON does not need to support burst mode to continuous mode conversion, which can reduce implementation complexity.
  • another embodiment of the carrier edge node in the embodiment of the present invention includes:
  • the xPON physical layer processing unit 1201 is configured to process an xPON (for example, 10G-GP0N or 10G-EP0N) physical layer signal to obtain an xPON MAC frame;
  • an xPON for example, 10G-GP0N or 10G-EP0N
  • the framing processing unit 1203 is configured to read data in the payload of the xPON MAC frame, and process the data in the payload of the xPON MAC frame according to the frame header of the xPON MAC frame to obtain a PON MAC frame;
  • the xGEM frame header can be removed from the xGEM frame processed by the xPON physical layer, and the PON-based Connection can be separated from the xPON-based Tunnel, thereby implementing the TC/GEM/EP0N MAC frame over xGEM (TC/GEM).
  • Frame/EPON MAC frame is carried in xGEM frame);
  • the NG-EP0N MAC frame preamble can be deleted from the NG-EP0N MAC frame processed by the NG-EP0N physical layer to obtain a TC/GEM frame/EPON MAC frame, which is divided into xPON-based tunnels.
  • a PON-based Connection is issued to implement a TC/GEM/EP0N MAC frame over NG-EP0N MAC frame.
  • the PON physical layer processing unit 1204 is configured to perform P0N (for example, GP0N or EP0N) physical layer processing on the PON MAC frame, obtain a P0N physical layer signal, and send the P0N physical layer signal;
  • P0N for example, GP0N or EP0N
  • the GPM sublayer function of the GP0N is completed.
  • the P0N data link layer frame is a GTC TC frame
  • the preamble of the GTC TC frame needs to be regenerated.
  • the PHY layer function of the EP0N is completed, including the PDM and the PMA.
  • the PCS and P0N data link layer frames are EPON MAC frames
  • the preamble of the EPON MAC frame needs to be regenerated.
  • the demultiplexing unit 1202 is configured to segment or recombine data in the payload of the xPON MAC frame obtained by the xPON physical layer processing unit 1201, and send the segmented or reassembled data to the framing processing unit 1203 for processing.
  • the uplink data transmission mode from the PE node to the CE node is described in this embodiment. To facilitate understanding, the following describes a specific application scenario:
  • the xPON physical layer processing unit 1201 processes the xPON physical layer signal to obtain an xPON MAC frame.
  • the xPON MAC frame in this embodiment may be an xGEM frame, an NG-EP0N MAC frame, or another type of xPON MAC frame, which is not limited herein.
  • the xPON physical layer processing unit 1201 processes the xPON physical layer signal to obtain an xPON MAC.
  • the process of the frame is common knowledge of those skilled in the art, and is not limited herein.
  • the demultiplexing unit 1202 may segment or reassemble the data in the payload of the xPON MAC frame according to the frame header of the xPON MAC frame, and frame the data.
  • the processing unit 1203 obtains the PON MAC frame by deleting the frame header of the xPON MAC frame.
  • the P0N physical layer processing unit 1204 can perform the P0N physical layer processing to obtain the P0N physical layer signal, and transmit the P0N physical layer signal, so that the PON MAC frame can be transmitted from the xPON. To P0N.
  • the demultiplexing unit 1202 may reassemble or segment the PON MAC frame, and the framing processing unit 1203 generates an xPON MAC frame according to the reassembled or segmented data, and the P0N physical layer processing unit 1204 transmits the PON MAC layer through the xPON physical layer.
  • the xPON MAC frame can implement the data transmission mode of the PON over xPON and reduce the data transmission cost. In this embodiment, the data transmission mode of the PON over xPON does not need to support the burst mode to the continuous mode conversion, which can reduce the implementation complexity. .
  • Another embodiment of the present invention provides a data transmission method, as shown in FIG. 13, including:
  • the service layer data may be an IP data packet, an Ethernet frame, or a time division multiplexed data packet.
  • the P0N MAC frame may be a Transmission Convergence (TC) frame, or a Gigabit Passive Optical Network Encapsulation (GEM) mode, or an EP0N MAC frame, or Other types of PON MAC frames are not limited herein.
  • the process in which the PE node xOLT encapsulates the data to obtain the PON MAC frame is a common knowledge of those skilled in the art, which is not limited herein.
  • the P0N MAC frame may be processed to obtain an xPON MAC frame, and the P0N MAC frame may be carried.
  • an xGEM frame header may be added to the PON MAC frame to obtain an xGEM frame, and the P0N-based connection is aggregated into the xPON-based tunnel, thereby implementing the TC/GEM/EP0N MAC frame over xGEM (TC/GEM).
  • /EP0N MAC frame is carried in the xGEM frame); for example, an Ethernet frame header with an NG-EP0N MAC frame preamble can be added to the PON MAC frame to obtain an NG-EP0N MAC frame, thereby implementing a TC/GEM/EP0N MAC frame. It is carried in the NG-EP0N MAC frame.
  • the PON MAC frame may also be segmented or reassembled according to the content in the foregoing embodiment.
  • a method for encapsulating the xPON MAC frame is provided, so that the xPON MAC frame structure is configured according to The P0N bandwidth divides a fixed transport byte block (data partition in the figure) for each P0N, and ensures that the order of these byte blocks does not change.
  • the encapsulated xPON TC frame includes 4 fixed PON TC frame data partitions.
  • the xPON MAC frame After the xPON MAC frame is obtained by the PE node xOLT, the xPON MAC frame can be processed by the xPON physical layer to obtain the xPON physical layer signal, and the xPON physical layer signal is sent to the PE node x0NU at the other end, so that the PON MAC can be carried.
  • the xPON MAC frame of the frame is transmitted in xPON.
  • the foregoing embodiments of the present invention can implement the interworking between the optical network device and other devices that send the service layer data, and can carry the PON MAC frame to the load of the xPON MAC frame, and transmit the xPON MAC frame through the xPON physical layer, so
  • the data transmission mode of the PON over xPON extends the optical transmission distance and reduces the data transmission cost.
  • the data transmission mode of the PON over xPON does not need to support the burst mode to the continuous mode conversion, thereby reducing the implementation complexity.
  • Another data transmission method is provided in the embodiment of the present invention, including:
  • the PE node xOLT processes the received xPON physical layer signal to obtain the xPON.
  • the xPON MAC frame in this embodiment may be an xTC frame (a TC frame of an NG GP0N), an xGEM frame, an NG-EP0N MAC frame, or other types of xPON MAC frames, which is not limited herein.
  • the process of processing the received xPON physical layer signal by the PE node xOLT to obtain the xPON MAC frame is common knowledge of those skilled in the art, which is not limited herein.
  • the PON MAC frame After acquiring the xPON MAC frame, in order to transmit the data to other non-optical network devices through the PON, it is necessary to obtain the PON MAC frame from the xPON MAC frame, because in the transmission of the PON over xPON, the PON MAC frame is located in the xPON MAC frame. In the load, the data in the payload of the xPON MAC frame can be read first.
  • the xOLT can read the PON MAC frame from the frame header of the xPON MAC frame.
  • the xOLT also needs to perform corresponding data on the payload of the xPON MAC frame. Reorganize or segment to get the correct PON MAC frame.
  • the PON MAC frame is processed to obtain the service layer data that can be transmitted by the network device connected to the PE node and sent. For example, if the xOLT is connected to an Ethernet, the PON MAC frame needs to be processed to get an Ethernet frame, which is then sent to the Ethernet connected to the xOLT.
  • the xOLT can read the PON MAC frame from the load of the xPON MAC frame, and then generate and transmit the service layer data of the P0N MAC frame, thereby implementing the data transmission mode of the PON over xPON, extending the optical transmission distance, and reducing Data transmission cost; and in this embodiment, the data transmission mode of the PON over xPON does not need to support the transition from the burst mode to the continuous mode, which reduces the implementation complexity.
  • the embodiment of the present invention further provides an operator edge node, which is used to implement the method shown in FIG. 13 and/or FIG. 14 .
  • the operator edge node is as shown in FIG. 15 and includes:
  • the at least one PON MAC layer processing unit 1501 is configured to process the service layer data to obtain a PON MAC frame, where the service layer data may be an IP packet or an Ethernet frame.
  • the first xPON MAC layer processing unit 1503 is configured to process the PON MAC frame obtained by the PON MAC layer processing unit 1501 to obtain an xPON MAC frame, where the PON MAC frame is located in a load of the xPON MAC frame.
  • the specific processing method refer to the foregoing embodiment.
  • a method for encapsulating an xPON MAC frame is provided.
  • the xPON MAC frame structure is divided into fixed transmission byte blocks (data partitions in the figure) for each P0N according to the P0N bandwidth, and the byte blocks are guaranteed. The order is unchanged.
  • the bandwidth of the xPON is 4 times the bandwidth of the P0N and the P0N MAC frame is a TC frame
  • the encapsulated xPON TC frame includes four fixed PON TC frame data partitions.
  • the xPON physical layer processing unit 1504 is configured to process the xPON MAC frame, obtain an xPON physical layer signal, and send the xPON physical layer signal.
  • the multiplexing/demultiplexing unit 1502 is configured to segment or reassemble the PON MAC frame according to the relationship between the length of the PON MAC frame obtained by the PON MAC layer processing unit 1501 and the preset length threshold, and segment or reorganize the PON MAC frame.
  • the subsequent P0N MAC frame is sent to the first xPON MAC layer processing unit 1503 for processing.
  • the xPON physical layer processing unit 1504 in the operator edge node in the embodiment of the present invention may also be configured to convert the received xPON physical layer signal into an xPON MAC frame.
  • the operator edge node in this embodiment may further include: a second xPON MAC frame processing unit 1505, configured to read data in a load of the xPON MAC frame obtained by the X P0N physical layer processing unit 1504, according to the xPON MAC frame
  • the data processing in the payload of the xPON MAC frame is obtained by the frame header.
  • the specific processing method may refer to the foregoing embodiment.
  • the multiplexing/resolving The unit 1502 is further configured to segment or recombine the data in the payload of the xPON MAC frame obtained by the second xPON MAC frame processing unit 1505, and send the segmented or reassembled data to the PON MAC frame processing unit 1501 for processing.
  • the PON MAC frame processing unit is further configured to process the received PON MAC frame to obtain service layer data.
  • the first xPON MAC layer processing unit 1503 and the second xPON MAC layer processing unit 1505 in the foregoing embodiment of the present invention may be separately disposed, or may be disposed in the same module, where the multiplexing/demultiplexing unit 1502 may also be separately set.
  • the operator edge node can read the PON MAC frame from the load of the xPON MAC frame, and then generate and transmit the service layer data of the PON MAC frame, thereby implementing the PON over xPON data transmission mode and extending the optical transmission.
  • the data transmission cost of the PON over xPON does not need to support the transition from the burst mode to the continuous mode, which reduces the implementation complexity.
  • the medium can be a read only memory, a magnetic disk or a compact disk or the like.

Landscapes

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

Abstract

Les modes de réalisation de la présente invention portent sur un procédé et un système de transmission de données et sur un nœud de périphérie de fournisseur (PE-Node). Ledit procédé comprend : le traitement de signaux de couche physique de réseau optique passif (PON) pour obtenir des trames de commande d'accès au support (MAC) PON ; le traitement desdites trames MAC PON pour obtenir les trames de commande d'accès au support (MAC) de réseau optique passif de prochaine génération (xPON), lesdites trames MAC PON étant placées dans les données utiles desdites trames MAC xPON ; la réalisation d'un traitement de couche physique xPON sur lesdites trames MAC xPON pour obtenir des signaux de couche physique xPON et la transmission desdits signaux de couche physique xPON. Les modes de réalisation de la présente invention portent également sur un système de transmission de données et sur des dispositifs correspondants. Les modes de réalisation de la présente invention peuvent efficacement réduire les coûts de transmission de données, augmenter la distance de transmission optique et réduire la complexité de mise en œuvre.
PCT/CN2010/073711 2009-07-15 2010-06-09 Procédé et système de transmission de données et nœud de périphérie de fournisseur WO2011006403A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200910152000 2009-07-15
CN200910152000.2 2009-07-15
CN 200910167099 CN101959091B (zh) 2009-07-15 2009-08-14 一种数据传输方法、系统以及运营商边缘节点
CN200910167099.3 2009-08-14

Publications (1)

Publication Number Publication Date
WO2011006403A1 true WO2011006403A1 (fr) 2011-01-20

Family

ID=43448926

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/073711 WO2011006403A1 (fr) 2009-07-15 2010-06-09 Procédé et système de transmission de données et nœud de périphérie de fournisseur

Country Status (2)

Country Link
CN (1) CN101959091B (fr)
WO (1) WO2011006403A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11450698B2 (en) 2015-12-29 2022-09-20 Viavi Solutions Inc. Dielectric mirror based multispectral filter array

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102932843B (zh) * 2012-10-17 2016-06-01 中国联合网络通信集团有限公司 信息传输方法、pon承载网络设备及信息承载网络设备
CN103856836B (zh) * 2012-11-29 2019-01-04 中兴通讯股份有限公司 无源光网络中用户数据的发送和接收方法及系统、设备
CN104243092B (zh) * 2013-06-24 2018-04-27 华为技术有限公司 光网络单元onu、光线路终端olt以及信息传输方法
CN112804296B (zh) * 2020-12-24 2022-07-05 国网安徽省电力有限公司经济技术研究院 一种适应电动汽车的电力物联网系统
CN112887851B (zh) * 2021-01-13 2021-10-08 烽火通信科技股份有限公司 一种家庭全光网络系统及其实现方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070070997A1 (en) * 2005-09-29 2007-03-29 Eliezer Weitz Enhanced passive optical network (PON) processor
CN101141346A (zh) * 2007-05-23 2008-03-12 中兴通讯股份有限公司 波分复用无源光网络装置
CN101159495A (zh) * 2006-10-08 2008-04-09 华为技术有限公司 无源光纤网络中信号传送系统及方法
CN101425867A (zh) * 2007-10-31 2009-05-06 中兴通讯股份有限公司 一种wdm接入网系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070070997A1 (en) * 2005-09-29 2007-03-29 Eliezer Weitz Enhanced passive optical network (PON) processor
CN101159495A (zh) * 2006-10-08 2008-04-09 华为技术有限公司 无源光纤网络中信号传送系统及方法
CN101141346A (zh) * 2007-05-23 2008-03-12 中兴通讯股份有限公司 波分复用无源光网络装置
CN101425867A (zh) * 2007-10-31 2009-05-06 中兴通讯股份有限公司 一种wdm接入网系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZHANG, CHONGFU ET AL.: "Passive optical networks based on optical CDMA: Design and system analysis", CHINESE SCIENCE BULLETIN, vol. 52, no. 1, January 2007 (2007-01-01), pages 118 - 126, XP019469317, DOI: doi:10.1007/s11434-007-0020-8 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11450698B2 (en) 2015-12-29 2022-09-20 Viavi Solutions Inc. Dielectric mirror based multispectral filter array

Also Published As

Publication number Publication date
CN101959091B (zh) 2013-12-18
CN101959091A (zh) 2011-01-26

Similar Documents

Publication Publication Date Title
JP6560815B2 (ja) 結合による高データレート拡張
US7675936B2 (en) Passive optical network (PON) system
US8824504B2 (en) Packet add/drop multiplexer and data transmission method of packet add/drop multiplexer
RU2467482C2 (ru) Расширение конвергенции передачи гигабитной пассивной оптической сети для доступа следующего поколения
JP5065492B2 (ja) 受動光ネットワークデータ伝送のための方法およびシステム
US9184847B2 (en) Dynamic bandwidth assignment in hybrid access network with passive optical network and another medium
US20230216584A1 (en) Cable modem system management of passive optical networks (pons)
US20110305458A1 (en) Method and device for service adaptation
US20110194854A1 (en) Upstream efficiency improvement method for passive optical networks
US20080260385A1 (en) Signal processing apparatus and method for gigabit passive optical network
WO2008043227A1 (fr) Système, appareil et procédé de transport sur un réseau de fibres optiques passives
JP2017516406A (ja) 波長切り換えのための方法、装置、及びシステム
WO2011006403A1 (fr) Procédé et système de transmission de données et nœud de périphérie de fournisseur
WO2018120179A1 (fr) Procédé, appareil et système de gestion d'unité de réseau optique (onu)
US8184640B2 (en) Compact virtual local area network mapper for the gigabit-passive optical network optical network management and control interface
US10749623B2 (en) Fault-tolerant distributed passive optical network bonding
WO2021073406A1 (fr) Procédé de transmission de données de service, appareil associé et puce de traitement numérique
CN101729935A (zh) 业务数据传输方法和装置
CN101489154B (zh) 无源光网络连接处理的方法、系统和设备

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: 10799401

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: 10799401

Country of ref document: EP

Kind code of ref document: A1