WO2015180508A1 - Architecture de réseau ouverte basée sur un système de pon à répartition de longueurs d'onde et procédé d'émission de signal - Google Patents

Architecture de réseau ouverte basée sur un système de pon à répartition de longueurs d'onde et procédé d'émission de signal Download PDF

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Publication number
WO2015180508A1
WO2015180508A1 PCT/CN2015/071916 CN2015071916W WO2015180508A1 WO 2015180508 A1 WO2015180508 A1 WO 2015180508A1 CN 2015071916 W CN2015071916 W CN 2015071916W WO 2015180508 A1 WO2015180508 A1 WO 2015180508A1
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optical
signal
service
current
wavelength
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PCT/CN2015/071916
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English (en)
Chinese (zh)
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王素椅
何岩
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烽火通信科技股份有限公司
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Publication of WO2015180508A1 publication Critical patent/WO2015180508A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/03—WDM arrangements
    • H04J14/0305—WDM arrangements in end terminals

Definitions

  • the present invention relates to the field of passive optical network optical access technology based on WDM (Wavelength Division and Multiplexing) technology, and particularly relates to an open network architecture and a signal transmission method based on a wavelength division PON system.
  • WDM Widelength Division and Multiplexing
  • the optical access network is an important part of the optical fiber communication network.
  • a large number of optical access devices such as PON equipment, central office OLT equipment, ODN equipment, ONU equipment, etc.
  • the PON network architecture is closed, so the services carried in the PON network are single.
  • most PON networks generally carry fixed-line Ethernet signals and rarely carry mobile signals.
  • the BBU Building Baseband Unit
  • RRU Remote Radio Unit
  • a point-to-point fiber connection is generally used between a single BBU and a single RRU.
  • the BBU and the RRU transmit more signals, which wastes a large amount of optical fiber resources.
  • the closed network architecture has the following drawbacks:
  • the existing fixed network and mobile network respectively use independent access network facilities.
  • Both the fixed network and the mobile network need to adopt the access network infrastructure (such as ODN) with a service life of 30 to 40 years.
  • the use of fixed network and mobile network in the infrastructure of two sets of access networks not only wastes a lot of resources, reduces the utilization of network resources, but also has high maintenance costs.
  • the present invention aims to provide an open network architecture and a signal transmission method based on a wavelength division PON system, which can integrate multiple mobile services, such as mobile services and fixed network services, into the same optical interface.
  • multiple mobile services such as mobile services and fixed network services
  • the present invention aims to provide an open network architecture and a signal transmission method based on a wavelength division PON system, which can integrate multiple mobile services, such as mobile services and fixed network services, into the same optical interface.
  • Into the infrastructure complete the uplink signal transmission and downlink signal transmission of a variety of different services; not only the service access capability is strong, the scope of application is relatively wide, and resource sharing can be realized, resource waste is reduced, and the use cost is low.
  • an open network architecture based on a wavelength division PON system including an open optical line terminal device OOLT, an optical distribution network ODN, a plurality of service providing devices providing different services, and a plurality of bearers.
  • the optical remote unit ORU device of different services, the service providing device is connected to the OOLT, and the OOLT is connected to each ORU device through the ODN;
  • the OOLT includes a control unit, a service selection unit, an optical transceiver array unit, a clock unit, and a plurality of service-side optical modules that carry different services;
  • the control unit is respectively connected to the service selection unit, the optical transceiver array unit, and the clock unit;
  • the optical module is connected to a service providing device corresponding to the service;
  • the service selecting unit is provided with a plurality of service data channels carrying different services, and each service-side optical module passes data corresponding to the service.
  • the channel is connected to the optical transceiver array unit;
  • the ODN includes a trunk fiber, a periodic arrayed waveguide grating AWG, and a plurality of branch fibers; the optical transceiver array unit is connected to the AWG through the trunk fiber; the AWG is connected to the optical modules of all the ORU devices through the branch fiber, and the 1 branch fiber connection 1 Taiwan ORU equipment;
  • the service providing devices that provide different services include at least one of an Ethernet ETH switch, a repeater near-end device, and an indoor baseband processing unit BBU.
  • a plurality of ORU devices carrying different services include at least one of an optical network unit ONU, a repeater remote unit, and a remote radio module RRU.
  • the optical transceiver array unit comprises an optical receiver array, a demultiplexer, an optical transmission array, a multiplexer and a filter, and the service selection unit is respectively connected to the optical receiver array and the optical transmission array.
  • the optical receiver array is connected to the filter through a demultiplexer
  • the optical transmitting array is connected to the filter through a multiplexer
  • the filter is connected to the AWG.
  • a signal transmission method based on a wavelength division PON system for the above open network architecture comprising the following steps:
  • the service side optical module photoelectrically converts the optical signal into an electrical signal, and the control unit determines the data channel of the service selection unit according to the current electrical signal; the service side optical module sends the current electrical signal to the optical transceiver array unit through the determined data channel. ;
  • the optical transceiver array unit converts the current electrical signal into an optical signal by electro-optical, and will After the optical signal is wavelength-multiplexed, it is output to the AWG through the backbone fiber.
  • the AWG performs wavelength demultiplexing on the current optical signal, and then outputs the downlink optical signal to the ORU device corresponding to the service of the current service-side optical module through the branch fiber.
  • the optical module of the ORU device converts the current data into an optical signal by the electro-optical.
  • the ORU device outputs the current optical signal to the AWG, the AWG through the branch fiber corresponding to the working wavelength of the current optical signal. After the current optical signal is wavelength-multiplexed, it is transmitted to the optical transceiver array unit through the trunk optical fiber;
  • the optical transceiver array unit performs wavelength demultiplexing on the current optical signal and photoelectrically converts it into an electrical signal, and the control unit and the clock unit determine a data channel of the service selection unit according to the current electrical signal; the optical transceiver array unit passes the current electrical signal The determined data channel is transmitted to the service-side optical module corresponding to the current electrical signal service, and the service-side optical module converts the current electrical signal into an optical signal through the electro-optical signal, and outputs the data to the service providing device corresponding to the current optical signal service. The transmission of the uplink signal is completed and ends.
  • the AWG After the AWG performs wavelength demultiplexing on the current optical signal, the AWG outputs the branch optical fiber to the ORU device corresponding to the service of the current service-side optical module, including the following steps: the AWG will present The optical signal is split to a branch fiber corresponding to the wavelength, and the branch fiber is output to the ORU device corresponding to the service of the current service-side optical module.
  • the AWG in the step D performs wavelength multiplexing on the current optical signal, and then transmits the optical signal to the optical transceiver array unit through the trunk optical fiber, including the following steps: the working wavelength of the current optical signal of the AWG is different from the other After the working wavelengths are combined, they are transmitted to the optical transceiver array unit through the backbone fiber.
  • the service providing device that provides different services includes an ETH switch and a BBU, and the service-side optical modules that carry different services include 1.25G ETH optical modules and 3G optical modules, and several bear different services.
  • ORU The equipment unit includes an ONU and an RRU;
  • the ETH switch is connected to the 1.25G ETH optical module, and the 1.25G ETH optical module is connected to the service selection unit through the ETH interface.
  • the service selection unit is provided with a data channel Ch8 carrying the 1.25G ETH service, and the Ch8 is connected to the ONU through one branch fiber.
  • the BBU is connected to the 3G optical module.
  • the 3G optical module is connected to the service selection unit through the common public radio interface CPRI interface.
  • the service selection unit is configured with a data channel Ch1 carrying the 3G service; Ch1 is connected to the RRU through one branch fiber.
  • the signal transmission method based on the wavelength division PON system includes the following steps:
  • the 1.25G ETH optical module receives the output signal of the ETH switch, the current Ethernet signal flows in the downlink direction; the 1.25G ETH optical module converts the current Ethernet signal into an electrical signal; the 1.25G ETH optical module will be the current one.
  • the signal is output to the optical transceiver array unit through the data channel Ch8; the corresponding working wavelength of the data channel Ch8 is ⁇ d/u8, where d indicates that the downlink signal is carried, and u indicates that the uplink signal is carried;
  • the optical transceiver array unit converts the current electrical signal into an Ethernet optical signal, and wavelength-multiplexes the current optical signal with other optical signals of different working wavelengths, and then outputs the optical signal to the AWG through the backbone optical fiber;
  • the wavelength Ethernet optical signal is wavelength-demultiplexed and passed through a branch fiber with a working wavelength of ⁇ d8 and output to the receiving end of the ONU to complete transmission of the downlink Ethernet signal;
  • the ONU receives data from the user, the current Ethernet signal flows in the upstream direction; the ONU optical module converts the current data into an optical signal, and the output wavelength is ⁇ u8; the ORU device passes the branch fiber with the working wavelength ⁇ u8. Outputting the current optical signal to the AWG; the AWG optically multiplexes the current optical signal with the output wavelength of the other ORU device, and then outputs the optical transceiver array unit through the trunk optical fiber;
  • the optical transceiver array unit performs wavelength demultiplexing on the wavelength-multiplexed optical signal and photoelectrically converts it into an electrical signal; the optical transceiver array unit outputs the current electrical signal to the 1.25G ETH optical module through the data channel Ch8, and the 1.25G ETH optical module The current electrical signal is converted into an optical signal by electro-optical, and output to the ETH switch to complete the transmission of the uplink Ethernet signal.
  • the signal transmission method based on the wavelength division PON system includes the following steps:
  • the 3G optical module receives the output signal of the BBU, the current 3G mobile signal flows in the downlink direction; the 3G optical module photoelectrically converts the current 3G mobile signal into an electrical signal; the 3G optical module outputs the current electrical signal through the data channel Ch1 to The optical transceiver array unit, the corresponding wavelength of the data channel Ch1 is ⁇ d/u1;
  • the optical transceiver unit converts the current electrical signal into an optical signal
  • the current optical signal is wavelength-multiplexed with other optical signals having different working wavelengths, and then output to the AWG through the backbone optical fiber;
  • the AWG converts the wavelength-multiplexed optical signal Performing wavelength demultiplexing and outputting the branch fiber with the working wavelength ⁇ d1 to the receiving end of the RRU to complete the transmission of the downlink 3G mobile signal;
  • the RRU receives the data from the user, the current 3G mobile signal flows in the uplink direction; the optical module of the RRU converts the current data into an optical signal, and the output wavelength is ⁇ u1, and the ORU device passes the branch fiber with the working wavelength ⁇ u1.
  • the current optical signal is output to the AWG; the AWG wavelength-multiplexes the current optical signal with the output wavelength of other ORU devices, and then outputs the optical signal to the optical transceiver array unit through the backbone optical fiber.
  • the optical transceiver array unit wavelength-demultiplexes the wavelength-multiplexed optical signal and photoelectrically converts it into an electrical signal; the optical transceiver array unit outputs the current electrical signal to the 3G optical module through the data channel Ch1, and the 3G optical module outputs the current electrical signal. It is converted into an optical signal by electro-optical light and output to the BBU to complete the transmission of the uplink 3G mobile signal.
  • the network architecture of the present invention includes a service selection unit.
  • the service selection unit can add a corresponding service according to the service requirement, select a corresponding optical module, and configure a data channel corresponding to the service.
  • the ORU devices corresponding to different services are connected to the supported service branches. Therefore, the network architecture of the present invention is open, and can integrate multiple mobile services, such as mobile services and fixed network services, into the same optical access infrastructure, and complete uplink signal transmission and downlink signal transmission of multiple different services; The access capability is strong, and the network resource utilization rate is improved.
  • the network architecture of the present invention is based on the WPON system, which can save the backbone fiber and reduce the use cost.
  • the network architecture of the present invention When used, it can access a plurality of different services and realize multi-service sharing. Therefore, the present invention can be applied to various ORU devices, which can not only improve device utilization, but also save device developers to repeat. Development costs for development.
  • the present invention only needs to maintain a single network architecture, and the maintenance cost is low; and the network architecture of the present invention uses a standard physical communication interface. It is convenient for users (devices of various manufacturers) to communicate and use.
  • FIG. 1 is a structural block diagram of an open network architecture based on a wavelength division PON system according to an embodiment of the present invention
  • FIG. 2 is a structural block diagram of an OOLT according to an embodiment of the present invention.
  • FIG. 3 is a structural block diagram of an optical transceiver array unit according to an embodiment of the present invention.
  • FIG. 4 is a structural block diagram of an open network architecture based on a wavelength division PON system in an application embodiment of the present invention.
  • an open network architecture based on a WDM Passive Optical Network (WDM) system includes an OOLT (Open Optical Line Termination). Equipment, ODN (Optical Distribution Network), a number of service providers that provide different services, and a number of ORUs (Optical Remote Units) that carry different services.
  • the service providing device is connected to the OOLT, and the OOLT is connected to each ORU device through the ODN.
  • the service provider device is an ETH (Ethernet) switch, a near-end device of the repeater, and a BBU (Building Baseband Unit).
  • the service-side optical module has corresponding service-providing devices. In all cases, all services are free to access the network architecture.
  • the ORU device is an RRU (Remote Radio Unit), a remote unit of the repeater, and an ONU (Optical Network Unit) of the type such as SFU/MDU;
  • the optical module has a wavelength adaptive function (ie, the output wavelength can be tuned to the corresponding wavelength output according to different wavelengths of the ODN branch fiber).
  • the OOLT includes a control unit, a service selection unit, an optical transceiver array unit, a clock unit, and a plurality of service-side optical modules for connecting uplinks.
  • the control unit has a CDR (Clock and Data Recovery) function, and the control unit is respectively connected to the service selection unit, the optical transceiver array unit, and the clock unit.
  • Each service-side optical module in the OOLT carries different services.
  • Each service-side optical module is connected to a service-providing device corresponding to the service.
  • the service selection unit is configured with a plurality of service data channels carrying different services.
  • the edge optical module passes the data channel corresponding to its service. Connected to the optical transceiver array unit.
  • the ODN includes a backbone fiber, an AWG (Periodic Arrayed Waveguide Grating), and a plurality of branch fibers.
  • the optical transceiver array unit is connected to the AWG through a trunk fiber, and the AWG is connected to the optical modules of all the ORU devices through the branch fiber, and one branch fiber connection 1
  • An ORU device; a branch fiber can allow multiple different wavelengths to operate simultaneously.
  • the optical transceiver array unit includes an optical receiver array, a demultiplexer, an optical transmission array, a multiplexer and a filter, and the service selection unit is respectively connected to the optical receiver array and the optical transmission array, and the optical receiver
  • the array is connected to the filter through a demultiplexer, and the optical transmission array is connected to the filter through a multiplexer, and the filter is connected to the AWG of the ODN.
  • step S1 determining the flow direction of the signal, if the service side optical module receives the optical signal sent by the service providing device corresponding to the service, the current signal flows in the downlink direction, and proceeds to step S2; if the ORU device receives the data from the user Then, the current signal flows in the upward direction, and the process goes to step S4.
  • the service side optical module photoelectrically converts the optical signal into an electrical signal, and the control unit determines the data channel of the service selection unit according to the current electrical signal, and the control unit controls the clock unit to configure the reference clock for the current data channel; the service side optical module will be the current power
  • the signal is sent to the optical transceiver array unit through the determined data channel.
  • the optical transceiver array unit converts the current electrical signal into an optical signal, and wavelength-multiplexes the current optical signal, and then outputs the optical signal to the AWG through the trunk optical fiber, and the AWG performs wavelength demultiplexing on the current optical signal (ie, the current optical signal)
  • the branching fiber is output to the ORU device corresponding to the service of the current service-side optical module, and the downlink signal is transmitted and terminated.
  • the optical module of the ORU device After the ORU device receives the data from the user, the optical module of the ORU device will be The pre-data is converted into an optical signal by electro-optical, and the ORU device outputs the current optical signal to the AWG through a branch fiber corresponding to the working wavelength of the current optical signal, and the AWG performs wavelength multiplexing on the current optical signal (ie, output with other ORU devices). Wavelength multiplexing) is transmitted to the optical transceiver array unit through the backbone fiber.
  • the optical transceiver array unit performs wavelength demultiplexing on the current optical signal and photoelectrically converts the electrical signal into an electrical signal, and the control unit and the clock unit determine the data channel of the service selection unit according to the current electrical signal.
  • the optical transceiver module transmits the current electrical signal to the service-side optical module corresponding to the current electrical signal service through the determined data channel, and the service-side optical module converts the current electrical signal into an optical signal by the electro-optical signal, and outputs the current electrical signal to the current
  • the service providing device corresponding to the optical signal service completes the transmission of the uplink signal and ends.
  • the control unit is mainly used to complete the management and control functions of the entire OOLT device, including different service selection of different data channels, and configuration of corresponding clock output and management control of the optical module according to the service of the channel.
  • the clock unit When the data channel of the service selection unit is determined, the clock unit provides a clock for the service selection unit. Because different service rates are different and clock precision requirements are different, the clock unit can provide corresponding reference for different data channels according to different service configurations. Clock output.
  • the receiving end and the transmitting end of the optical transceiver array unit can operate at the same wavelength or different wavelengths.
  • the optical transceiver array unit transmits the signal in the downlink direction
  • the electrical signal from the service selection unit is converted into an optical signal and then sent to the ODN
  • the optical signal from the ODN is converted into an electrical signal. After that, it is sent to the corresponding data channel of the service selection unit.
  • the upstream working wavelength and the downstream operating wavelength may be the same or different.
  • Upstream working wavelength and downstream operating wavelength by WPON The technical decision adopted by the system; if the WPON system adopts the wavelength reuse mode, the uplink working wavelength and the downlink working wavelength are the same; if the WPON system adopts the tunable laser mode, the uplink working wavelength and the downlink working wavelength are generally different.
  • the open network architecture of the wavelength division PON system and the method for transmitting signals thereof according to the present invention are specifically described below through an application embodiment.
  • the open network architecture in this application embodiment is based on a wavelength division PON system; the wavelength division PON system covers eight wavelength pairs, wherein the uplink 8 wavelengths and the downlink 8 wavelengths.
  • the working wavelength of the uplink is different from the working wavelength of the downlink, the working wavelength of the uplink is the C-band, and the working wavelength of the downlink is the L-band, thereby achieving single-fiber bidirectional transmission.
  • the service transmitted in this application embodiment is an Ethernet service at a rate of 1.25 Gb/s and a mobile service at a 3G rate.
  • the open network architecture based on the wavelength division PON system in the application embodiment includes an OOLT, an ODN, an ORU device with different services, and a service providing device.
  • the OOLT includes a control unit, a service selection unit, an 8-way optical transceiver array unit, a clock unit, and a plurality of service-side optical modules with different services.
  • the service selection unit includes a 16 ⁇ 16 cross chip supporting multi-service and with CDR function, which includes 16 ports: port 1, port 2, port 3, port 4, port 5, port 6, port 7, port 8, port 9. Port 10, port 11, port 12, port 13, port 14, port 15, port 16; port 1 to port 8 are respectively connected to one service optical module, and ports 9 to 16 are connected to eight optical transceiver units. .
  • the clock unit includes a clock selector, a 49.152MMhz crystal and a 125Mhz crystal, and the 49.152MMhz crystal and the 125Mhz crystal are all connected to the service selection unit through a clock selector.
  • the service providing device includes an ETH switch and a BBU, and the service side optical module includes a 1.25G ETH optical module and a 3G optical module, and the ORU device unit includes an ONU and an RRU.
  • ONU The optical module connected to the AWG and the optical module connected to the RRU and the AWG have automatic wavelength adaptation.
  • the ETH switch is connected to the 1.25G ETH optical module.
  • the 1.25G ETH optical module is connected to the port 1 through the ETH interface.
  • the port 1 and the port 16 form a data channel Ch8 carrying the 1.25G ETH service.
  • the Ch8 is connected to the ONU through a branch fiber.
  • the BBU is connected to the 3G optical module.
  • the 3G optical module is connected to the port 8 through the CPRI interface (general public wireless interface).
  • the port 8 and the port 9 form a data channel Ch1 that carries the 3G service.
  • the Ch1 is connected to the RRU through one branch fiber.
  • the ODN includes the backbone fiber, the AWG, and the branch fiber.
  • the 8-channel optical transceiver array unit is connected to the AWG through the backbone fiber.
  • the AWG is connected to the ONU and the RRU through two branch fibers respectively.
  • Each branch fiber allows one L-band wavelength and one C. The wavelength of the band works at the same time, achieving single-fiber bidirectional transmission.
  • the 1.25G ETH optical module receives the output signal of the ETH switch, the current Ethernet signal flows in the downstream direction.
  • the 1.25G ETH optical module photoelectrically converts the current Ethernet signal into an electrical signal; the control unit controls the clock unit to configure a 125Mhz clock for the data channel Ch8, and the 1.25G ETH optical module passes the current electrical signal through the data channel Ch8 (ie, input from the port 1)
  • the output from the port 16 is output to the 8-channel optical transceiver array unit, and the corresponding wavelength of the data channel Ch8 is ⁇ d/u8 (d indicates that the downlink signal is carried, and u indicates that the uplink signal is carried).
  • the 8-channel optical transceiver array unit converts the current electrical signal into an Ethernet optical signal, and operates at a branch of wavelength ⁇ d8, and ⁇ d8 is wavelength-multiplexed with other optical signals of different working wavelengths ( ⁇ d1 ⁇ ⁇ d7), and then passes through the trunk. Fiber output to AWG, AWG vs. wavelength
  • the multiplexed multi-wavelength Ethernet optical signal is wavelength demultiplexed (ie, split-wave), and the wavelength-demultiplexed optical signal works on the respective branch fibers, and the optical signal of Ch8 is output to the ONU through the branch optical fiber of ⁇ d8. End, complete the transmission of the downlink Ethernet signal.
  • the current Ethernet signal flows in the upstream direction.
  • the ONU's optical module converts the current data into an optical signal with an output wavelength of ⁇ u8.
  • the ORU device outputs the current optical signal to the AWG through a branch fiber with a working wavelength of ⁇ u8.
  • the AWG wavelength-multiplexes the current optical signal with the output wavelength of other ORU devices (ie, wavelength multiplexed), and outputs it to the 8 through the backbone fiber.
  • Road light transceiver array unit converts the current data into an optical signal with an output wavelength of ⁇ u8.
  • the ORU device outputs the current optical signal to the AWG through a branch fiber with a working wavelength of ⁇ u8.
  • the AWG wavelength-multiplexes the current optical signal with the output wavelength of other ORU devices (ie, wavelength multiplexed), and outputs it to the 8 through the backbone fiber.
  • Road light transceiver array unit converts the current data into an optical signal with an output wavelength of ⁇ u8
  • the 8-channel optical transceiver array unit performs wavelength demultiplexing (ie, wavelength division) on the wavelength-multiplexed optical signal, and photoelectrically converts it into an electrical signal; the 8-channel optical transceiver array unit passes the current electrical signal through the data channel Ch8 (ie, from Port 16 input, output from port 1) is output to the 1.25GETH optical module.
  • the 1.25G ETH optical module converts the current electrical signal into an optical signal and outputs it to the ETH switch to complete the transmission of the uplink Ethernet signal.
  • the method for transmitting a 3G mobile signal signal based on a signal of a wavelength division PON system in this application embodiment includes the following steps:
  • the 3G optical module receives the output signal of the BBU, the current 3G mobile signal flows in the downlink direction.
  • the 3G optical module photoelectrically converts the current 3G mobile signal into an electrical signal; the control unit controls the clock unit to configure a clock of 49.125 Mhz (or a frequency having a multiple relationship with the 3G rate) for the data channel Ch1, and the 3G optical module passes the current electrical signal through the data.
  • the channel Ch1 i.e., input from port 8 and output from port 9) is output to eight optical transceiver units, and the corresponding wavelength of the data channel Ch1 is ⁇ d/u1.
  • the 8-channel optical transceiver array unit converts the current electrical signal into an optical signal
  • the working wavelength is ⁇ d1
  • ⁇ d1 is wavelength-multiplexed with other optical signals of different working wavelengths.
  • the optical fiber output to the AWG and the AWG is wavelength-demultiplexed, and is output to the receiving end of the RRU through the branch fiber with the working wavelength of ⁇ d1 to complete the transmission of the downlink 3G mobile signal.
  • the current 3G mobile signal flows in the upstream direction.
  • the optical module of the RRU converts the current data into an optical signal by electro-optical, and its output wavelength is ⁇ u1.
  • the ORU device outputs the current optical signal to the AWG through a branch fiber operating at ⁇ u1.
  • the AWG wavelength-multiplexes the current optical signal with the output wavelength of other ORU devices (ie, wavelength multiplexing), and outputs it to the 8-channel optical transceiver array unit through the backbone fiber.
  • the 8-channel optical transceiver array unit wavelength-demultiplexes the wavelength-multiplexed optical signal and photoelectrically converts it into an electrical signal; the 8-channel optical transceiver array unit passes the current electrical signal through the data channel Ch1 (ie, input from port 9 and from the port) 8 output) output to the 3G optical module, the 3G optical module converts the current electrical signal into an optical signal by electric light, and outputs it to the BBU to complete the transmission of the uplink 3G mobile signal.
  • Ch1 ie, input from port 9 and from the port 8 output

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Abstract

L'invention concerne un système de Réseau Optique Passif (PON) par répartition en longueur d'onde sur la base ouverte architecture de réseau et procédé de transmission de signal, qui concernent le domaine technique de l'accès optique de réseaux optiques passifs. L'architecture réseau comprend une unité de commande, une unité de sélection de service, une unité de matrice d'émetteurs/récepteurs optiques, une unité d'horloge et plusieurs modules optiques de côté service, l'unité de commande étant respectivement connectée à l'unité de sélection de service, à l'unité de matrice d'émetteurs/récepteurs optiques et à l'unité d'horloge; chacun des modules optiques de côté service est relié à un dispositif de fourniture de service; l'unité de sélection de service est dotée de plusieurs canaux de données de service, et chacun des modules optiques de côté service est relié à l'unité de matrice d'émetteurs/récepteurs optiques par le canal de données correspondant à un de ses services; et l'unité de matrice d'émetteurs/récepteurs optiques est reliée aux modules optiques de tous les dispositifs ORU par une AWG. Au moyen de la présente invention, divers services différents peuvent avoir un accès complet à la même infrastructure d'accès optique, ce qui permet d'achever l'émission des signaux de liaison montante et de liaison descendante des divers services différents. D'une part la capacité d'accès aux services est forte et la plage d'application est étendue, et d'autre part le partage de ressources peut être réalisé et les coûts d'utilisation sont bas.
PCT/CN2015/071916 2014-05-29 2015-01-30 Architecture de réseau ouverte basée sur un système de pon à répartition de longueurs d'onde et procédé d'émission de signal WO2015180508A1 (fr)

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CN201410233737.8A CN104023282B (zh) 2014-05-29 2014-05-29 基于波分pon系统的开放网络架构及信号传输方法

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Cited By (3)

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