CN103986984A - Access node device and system based on gigabit-Ethernet passive optical network - Google Patents
Access node device and system based on gigabit-Ethernet passive optical network Download PDFInfo
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Abstract
The invention provides an access node device based on a gigabit-Ethernet passive optical network. The access node device comprises a power module, an access node MAC layer module, a high-speed physical layer module and a user service processing module. The power module is respectively and electrically connected with the access node MAC layer module, the high-speed physical layer module and a photovoltaic conversion module. The photovoltaic conversion module is in communicating connection with the access node MAC layer module through the high-speed physical layer module. The invention further provides a corresponding system. According to the device and system, the compatibility of the gigabit Ethernet can be better, the optical fiber network bandwidth can be larger, and the outside electromagnetic environment interference resisting performance is enhanced. An FPGA logical circuit module is adopted for achieving network logical link layer protocols, and the real-time performance of network transmission is improved by combining a light burst transmission technology and a high-speed physical layer serial chip. The device and system are simple in overall frame, and can fast construct an optical fiber network on the industrial site by being matched with central nodes.
Description
Technical field
The present invention relates to fiber optical network communication technology field, particularly, relate to a kind of access node device based on Gigabit Passive Optical Network.
Background technology
In various industry spot and onboard system, comprise a large amount of images, signal transmission, such as ccd image system, radar, GPS navigation etc., the data of these equipment rooms also will be shared, exchange and change, and this will ask one of the rapid build passive optical-fiber network based on Ethernet.And the existing wireless network that is applied to industry spot and onboard system is to be all borrowed in backbone network technology, not only narrow bandwidth of its network, and disturbed by outer signals, in industry spot and onboard system, operating mode is severe, makes field network work very unstable.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of access node device based on Gigabit Passive Optical Network.Apparatus of the present invention provide the express network access of perfect video, voice and control signal for fiber optic network.In vehicle-mounted networking and industry spot, network service requires to have higher real-time, meet the quick response requirement of automobile sensor and electric control gear with this, while is along with the development of inter-vehicle information system, the demand of communication bandwidth is also significantly promoted, cannot possess in the prior art at present and not only meet compared with high real-time but also technology and the product of large capacity bandwidth are provided, 1000 M passive fiber optic network access node device of the present invention has solved above-mentioned practical problem, possess compared with high real-time and high capacity communication bandwidth, there is novelty and perspective.
According to an aspect of the present invention, a kind of access node device based on Gigabit Passive Optical Network providing, comprises power module, access node MAC layer module, high-speed physical layer module, customer service processing module and photoelectric conversion module;
Wherein, described power module is electrically connected with described access node MAC layer module, high-speed physical layer module, customer service processing module and photoelectric conversion module respectively; Described photoelectric conversion module is connected with described access node MAC layer module communication by described high-speed physical layer module; Described customer service processing module connects described access node MAC layer module;
Described photoelectric conversion module is for the conversion process between the signal of telecommunication and light signal; Control signal, voice signal and vision signal that described customer service processing module need to be transmitted by Gigabit Passive Optical Network for the treatment of user; Described high-speed physical layer module has been used for the sending and receiving processing of the physical-layer data frame of Gigabit Passive Optical Network; Described access node MAC layer module is used for reading and writing user service data; Described power module is for the power supply of described access node MAC layer module, high-speed physical layer module, customer service processing module and photoelectric conversion module.
Preferably, customer service processing module comprises interconnective customer service module and business datum buffer memory fifo module; Described customer service module is connected with access node MAC layer module by business datum buffer memory fifo module; Described customer service processing module is used for collection and the playback of voice, video and control signal, and to complete packing and the parsing of unified data segment through three kinds of signals of signal condition; Described business datum buffer memory fifo module is for the temporary and read-write of data between user's processing module and access node MAC layer module.
Preferably, described high-speed physical layer module comprises PHY bursty data transmitting element and PHY data receiver unit; Described high-speed physical layer module is connected with described access node MAC layer module by the gmii interface of standard; Described PHY bursty data transmitting element at the time slot window of access node by bursty traffic settling signal coding, parallel-serial conversion from receiving, and export serial data stream to photoelectric conversion module; Described PHY data receiver unit, for receiving the serial data stream of photoelectric conversion module output, and goes here and there and conversion, signal decoding, the parallel data frame with byte form is exported to access node MAC layer module; Described access node MAC layer module is connected described photoelectric conversion module by PHY bursty data transmitting element with PHY data receiver unit respectively.
Preferably, described access node MAC layer module comprises sequence control unit, frame resolution unit, data encapsulation unit, user's access unit, MAC data transmission unit and MAC data receiver unit; Sequence control unit, for receiving the timing information of network, calculates the time of each time slot window, and real-time informing MAC data transmission unit, controls the transmission task of opening; Frame resolution unit, for resolving the information such as the source address that wherein comprises, destination address, frame type from receiving buffer memory, is made corresponding processing and output; Data encapsulation unit, for encapsulating the MAC layer data frame that need to send to network; User's access unit is for connecting the data buffer storage FIFO of customer service processing module, carry out customer service is processed to FIFO read and write task; MAC data transmission unit is for being sent to high-speed physical layer module by MAC layer data frame; MAC data receiver unit is for receiving MAC layer data frame from high-speed physical layer module; Described high-speed physical layer module connects described business datum buffer memory fifo module by MAC data receiver unit, frame resolution unit, user's access unit successively; Described business datum buffer memory fifo module connects described high-speed physical layer module by user's access unit, data encapsulation unit, MAC data transmission unit successively; Described frame resolution unit connects respectively described data encapsulation unit and described MAC data transmission unit by sequence control unit.
Preferably, described customer service module comprises control signal processing unit, voice signal processing unit and video signal processing unit; Control signal processing unit is used for acquisition process control signal and switching value signal, and deposits valid data separately in business datum buffer memory fifo module; Voice signal processing unit is used for acquisition process analog voice signal, digitized processing, and deposit voice digital signal in business datum buffer memory fifo module; Video signal processing unit is used for acquisition process analog video signal, digitized processing, and deposit picture signal in business datum buffer memory fifo module; Control signal processing unit, voice signal processing unit and video signal processing unit all connect described access node MAC layer module by business datum buffer memory fifo module.
Preferably, described photoelectric conversion module comprises access point photoelectric conversion unit and output point electrooptic switching element; Described access point photoelectric conversion unit is used for the light signal receiving to be converted to the signal of telecommunication, and sends to access node MAC layer module by high-speed physical layer module; Described output point electrooptic switching element is for being converted to light signal by the signal of telecommunication sending over from described access node MAC layer module by high-speed physical layer module.
Preferably, the pattern of described photoelectric conversion module receiving optical signals is that continuity receives, and described photoelectric conversion module utilizing emitted light signal mode is sudden transmitting.
Preferably, also comprise supplementary module, described supplementary module comprises FPGA dispensing unit and clock source; FPGA dispensing unit is for being solidificated in a FPGA dispensing unit by configuration data; Clock source is used for providing clock reference; Described FPGA dispensing unit is connected described access node MAC layer module, high-speed physical layer module and customer service processing module respectively with described clock source.
According to an aspect of the present invention, a kind of access node system based on Gigabit Passive Optical Network providing, comprises that access node device, the light based on Gigabit Passive Optical Network divides router and Centroid described in several;
Wherein, described Centroid divides router to be connected with the described access node device based on Gigabit Passive Optical Network by light.
Preferably, in the time of transmitting uplink data, adopt time-multiplexed mode, be that each described access node device can receive the time slot window that Centroid distributes in one takes turns communication cycle, each described access node device is opened laser and is carried out uploading of data in this time slot window.
Compared with prior art, the present invention has following beneficial effect:
1. the present invention can make that gigabit Ethernet is compatible better, fiber optic network bandwidth is larger and strengthen anti-external electromagnetic environmental interference;
2. the present invention has adopted fpga logic circuit module to realize the logical links layer protocol of network, has guaranteed that the real-time of Internet Transmission is in delicate level by light burst transfer technology in conjunction with high-speed physical layer serial chip;
3. overall architecture of the present invention is simple, coordinates Centroid, can be at fiber optic network of industry spot rapid build.
Brief description of the drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the structural representation of access node device in the present invention;
Fig. 2 is the building-block of logic of access node device in the present invention;
Fig. 3 is fiber optic network overall structure figure in the present invention;
Fig. 4 is access node data communication flow process figure in the present invention;
Fig. 5 is access node network management flow chart in the present invention;
Fig. 6 is fiber optic network data frame format schematic diagram in the present invention;
Fig. 7 is fiber optic network control frame form schematic diagram in the present invention;
Fig. 8 is the schematic diagram of customer service processing module business in the present invention;
Fig. 9 is the connection diagram of high speed physical layer block of the present invention;
Figure 10 is the schematic diagram of access node MAC layer module in the present invention;
Figure 11 is the schematic diagram of photoelectric conversion module in the present invention;
Figure 12 is the annexation schematic diagram of supplementary module and each functional module in the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
As shown in Fig. 1, Fig. 8, the access node device based on Gigabit Passive Optical Network provided by the invention comprises power module, access node MAC layer module, customer service processing module, high-speed physical layer module and photoelectric conversion module.Power module is electrically connected with access node MAC layer module, customer service processing module, high-speed physical layer module and photoelectric conversion module respectively, for it provides electric energy.Customer service processing module comprises connected user traffic access module and business datum buffer memory fifo module.User traffic access module is connected with access node MAC layer module by business datum buffer memory fifo module.Between high-speed physical layer module and access node MAC layer module, communicate to connect, between photoelectric conversion module and high-speed physical layer module, communicate to connect, photoelectric conversion module connects Centroid by optical fiber.
Described photoelectric conversion module is for the conversion process between the 1000 M passive fiber optic network signal of telecommunication and light signal, the signal of telecommunication access that has specified photoelectric conversion module adopts LVPECL electrical standard, traffic rate is 1.25Gbps, photoelectric conversion module has specified that the interface of light signal is single-mode optics signal, send optical wavelength 1310nm, receive optical wavelength 1490nm, the speed of light signal is 1.25Gbps.Control signal, voice signal and vision signal that described customer service processing module need to be transmitted by Gigabit Passive Optical Network for the treatment of user, the buffer memory framing that customer service processing module inside has comprised front end signal collection and passback, various types of signal and frame are resolved, in data flow, transmitting terminal customer service processing module completes collection, buffer memory and framing task, and receiving terminal customer service processing module completes frame parsing, buffer memory and passback task.
Described high-speed physical layer module has been used for the sending and receiving processing of the physical-layer data frame of Gigabit Passive Optical Network, in transmission processing, optical network data frame carried out parallel-serial conversion, the fibre circuit coding of framing, the physical-layer data frame of physical-layer data frame and sent, and controlling the opening and the task of closing of laser of described photoelectric conversion module.The parsing of carrying out reception, fibre circuit decoding, string conversion, the physical-layer data frame of physical-layer data frame in reception & disposal is finally submitted to access contact MAC layer module active data frame and is continued to process.Described access node MAC layer module has been used for framing and the transmission of the calculating of parsing, control slot passage of the reception of MAC layer data and buffer memory, Frame and adjustment, Frame.Be connected and read and write user service data with customer service processing module.Described power module, for the power supply of described access node MAC layer module, high-speed physical layer module, customer service processing module and photoelectric conversion module is provided, provides voltage to comprise 5V, 3.3V, 2.5V and 1.2V.Described customer service module is used for collection and the playback of voice, video and control signal, and to complete packing and the parsing of unified data segment through three kinds of signals of signal condition.Described business datum buffer memory fifo module is for the temporary and read-write of data between user's processing module and access node MAC layer module.
As shown in Figure 9, high-speed physical layer module comprises burst PHY data transmission unit, PHY data receiver unit.High-speed physical layer module is interconnected by gmii interface and the access node MAC layer module of standard.Described PHY bursty data transmitting element at the time slot window of access node by the bursty traffic settling signal coding, the parallel-serial conversion that receive from access node MAC layer module, and export serial data stream to photoelectric conversion module, control photoelectric conversion module simultaneously and open laser, when time slot window finishes, close laser.Described PHY data receiver unit is for receiving the serial data stream of photoelectric conversion module output and completing receive clock recovery, string conversion, signal decoding in receiver module, the parallel data frame with byte form is exported to access node MAC layer module.Described access node MAC layer module is connected described photoelectric conversion module by PHY bursty data transmitting element with PHY data receiver unit respectively.
As shown in figure 10.Access node MAC layer module comprises sequence control unit, frame resolution unit, data encapsulation unit, MAC data transmission unit, MAC data receiver unit and user's access unit.Sequence control unit, for receiving the timing information of network, calculates the time of each time slot window, and real-time informing MAC data transmission unit, controls the transmission task of opening.Frame resolution unit, for resolving the information such as the source address that wherein comprises, destination address, frame type from receiving buffer memory, makes corresponding processing and output.Data encapsulation unit is for encapsulating the MAC layer data that need to send to network, and according to access node different phase, selection sends network data frame or management frame, encapsulates corresponding frame type information.User's access unit is for connecting the data buffer storage FIFO of customer service processing module, carry out customer service is processed to FIFO read and write task.MAC data transmission unit is for being sent to high-speed physical layer module by MAC layer data frame.MAC data receiver unit is for receiving MAC layer data frame from high-speed physical layer module.
User traffic access module comprises control signal processing unit, voice signal processing unit, video signal processing unit and data cache module.Control signal processing unit is used for acquisition process RS422, RS232, and CAN bus and switching value signal, and deposit valid data separately in buffer memory.Voice signal processing unit, for acquisition process analog voice signal, digitized processing, and deposit voice digital signal in buffer memory.Video signal processing unit, for acquisition process analog video signal, digitized processing, and deposit picture signal in buffer memory.Control signal processing unit adopts control signal treatment circuit, the voice signal processing unit of model SN65HVD230 to adopt speed signal processing circuit, the video signal processing unit that model is WM8731 to adopt the video processing circuit that model is AD9280/AD9708.
As shown in figure 11, photoelectric conversion module comprises access point photoelectric conversion unit and output point electrooptic switching element.Access point photoelectric conversion unit and output point electrooptic switching element are all connected between Centroid and high-speed physical layer module.Photoelectric conversion module transfers by access point photoelectric conversion unit the light signal receiving from Centroid to the signal of telecommunication, and mails to access node MAC layer module by high-speed physical layer module; Photoelectric conversion module is converted to light signal by receiving the signal of telecommunication of coming by high-speed physical layer module from access node MAC layer module by output point electrooptic switching element, and mails to the Centroid of light net.The mode of photoelectric conversion module receiving optical signals is that continuity receives, and photoelectric conversion module utilizing emitted light signal is sudden transmitting.Access node MAC layer module adopts the fpga logic circuit module of EP3C40F324 chip.High-speed physical layer module adopts TLK2541 circuit module.Photoelectric conversion module adopts LTB3421 optical-electric module.Photoelectric conversion module adopts single fiber bi-directional communication pattern, and the wavelength that can receive is 1490nm, and the wavelength that can send is 1310nm.As shown in figure 12, access node device provided by the invention also comprises supplementary module, and supplementary module comprises FPGA dispensing unit and clock source.Supplementary module is used to the hardware chip of each module that clock is provided, provides core voltage, IO port voltage and the internal logic circuit of FPGA process chip to power, provide curing FPGA dispensing unit to store all protocol processes logics, in access node initialization procedure, dispensing unit completes the configuration to FPGA process chip.FPGA dispensing unit is for being solidificated in a FPGA dispensing unit by configuration data, and the access node dispensing unit that powers on completes the initial configuration to FPGA.Clock source is used to each module of access node that clock reference is provided, and all processing modules all complete work separately under synchronous timeticks.
The speed of service of access node MAC layer module is 125MHz, and the high-speed differential signal speed of service that photoelectric conversion module connects is 1.25GHz.Access node MAC layer module completed sequence control function, frame analytical capabilities, data encapsulation function, data input and data output function, sends the function that receives buffer memory, user data access conversion and control.Access node MAC layer module adopts EP3C40F324 chip.Operation clock source is 125MHz, supports LVDS differential level and LVTTL level.
User traffic access layer module and business datum buffer memory fifo module are for gathering video, voice and control signal and the video collecting, voice and control signal being carried out to preliminary treatment, digitlization and data encapsulation.Video, voice and control signal after user traffic access layer module encapsulates data by business datum buffer memory fifo module are input to access node MAC layer module.In readout, by reading business datum buffer memory fifo module, export to user through data decapsulation and Signal form translate.
High-speed physical layer module is mainly divided into: burst PHY data transmission unit, PHY data receiver unit.High-speed physical layer module adopts TLK2541 circuit module to realize.On up direction, in the mandate time slot that access node device provided by the invention distributes at Centroid, flow from FPGA output parallel bit, by parallel-serial conversion and optical fiber cable roadside coding, after LVPECL level conversion, be modulated on up wavelength through photoelectric conversion module, form high-speed optical signal data flow and upload Centroid.On down direction, access node device provided by the invention carries out the burst receiving from Centroid opto-electronic conversion and LVPECL level conversion, through string conversion and fibre circuit decoding output 8bits data-signal and 1bits control signal, send into the physical layer data receiver module of fpga logic circuit module inside.The frame head postamble that FPGA removes physical layer data extracts MAC layer effective information.
Photoelectric conversion module is responsible for transferring the light signal receiving up from Centroid to the signal of telecommunication, is sent to high-speed physical layer module and processes; The signal of telecommunication sending over from high-speed physical layer module is converted to light signal, mails to the Centroid of light net.Photoelectric conversion module adopts LTE3421 optical-electric module.LTE3421 is a kind of optical transceiver of high speed, and opto-electronic conversion speed can reach 1250Mb/s, supports burst transmit and receives continuously, possesses high-speed switch light signal sending function simultaneously, adopts single fiber bi-directional communication pattern, receives wavelength 1490nm, sends wavelength 1310nm.
At one more in preferred embodiment, from vehicle environment, be all kinds of business for the various kinds of sensors control signal of vehicle interior, main business interface is vehicle-mounted CAN interface, in car, can provide video voice multimedia service simultaneously, design the vehicle-mounted Ethernet passive optical network with real-time exchange function.The indispensable link of the user data service communication that access node device provided by the invention is Gigabit Passive Optical Network.Access node device provided by the invention completes the data access of video, voice and control signal, and coordinates Centroid to complete network data communication task.
The indispensable link that user data service that access node device provided by the invention is whole network loads, to be the mandate time slot that distributes according to Centroid be packaged into by user data the network data frame that meets fiber optic network agreement to its major function is uploaded to Centroid.The downlink network frame that simultaneously continuously receiving center node forwards, resolves the destination address extracting wherein, and frame type and user data complete optionally and receive, and is finally converted to user data and submits to user.Access node device provided by the invention comprises: access node MAC layer module, customer service processing module, high-speed physical layer module and photoelectric conversion module.
As shown in Figure 2, access node MAC layer module realizes at FPGA internal logic circuit, adopt EP3C40F324 chip, be responsible for realizing the MAC of access node and the packing of physical layer data and analytical capabilities, for the MAC of access node device provided by the invention provides reliable transfer of data, support continuous data to receive and the transmission of bursty data, and provide interface for business datum input and output.Access node MAC module comprises that GMII sends receiving element, MAC data receiver buffer unit, frame resolution unit, sequence control unit, MAC data transmission unit and user data access unit.Wherein, GMII sends receiving element and connects high-speed physical layer module, for the effective MAC data of input and output.Frame resolution unit, for extracting node ID information, timestamp information and the frame type information of each frame, generates corresponding control signal input time slot control unit by judgement.Sequence control unit reads the address information of frame, type information also completes the calculating of time slot window and the dynamic adjustment of time slot window error according to internal state machine, guarantees that time slot moment and Centroid time slot that each takes turns access node device provided by the invention in communication are consistent.The network MAC layer data section of gmii interface output is responsible for processing in MAC data transmission unit and MAC data receiver unit.User's access unit is used for writing and reads voice, video and service control data.
The string that high-speed physical layer module need to complete receive clock Fast synchronization, data also/parallel-serial conversion and the encoding and decoding of 8B10B fibre circuit, and provide gmii interface for the connection of MAC layer.High-speed physical layer module adopts TLK2541 module, and inside has comprised 8B10B coding, mode of operation is set at 1.25Gbps.Under 1.25Gbps pattern and 8B10B encoding and decoding effect, TLK2541 provides the input of 8bits FPDP and 1bit control port, finally generates 10bits high speed serialization code stream and sends.Decoded and restored original 8bits data and the mode bit of 1bits by 8B10B at receiving terminal, high-speed physical layer module receives data by phase-locked loop Fast synchronization.
Photoelectric conversion module adopts LTE3421 optical-electric module, photoelectric conversion module connects Centroid by optical fiber, be responsible for transferring the light signal receiving from Centroid to the signal of telecommunication, being sent to high-speed physical layer processes, the signal of telecommunication sending over from high-speed physical layer is converted to light signal, mails to Centroid.Working method when proper communication: receiving when signal, is continuous reception, is engraved in reception data when optical-electric module, and completes the conversion of photoelectricity; When transmitted signal, for the transmission of burst, in normal operation, only in the time authorizing time slot to arrive, laser is just opening, in all the other situations, laser, in closed condition, has reached multiple access nodes provided by the invention like this according to the feature of different separately mandate time slot sharing fiber signals.Photoelectric conversion module adopts single fiber bi-directional communication pattern, and reception wavelength is 1490nm, and transmission wavelength is 1310nm.
Power module, provides other each modules normal voltage and power of working, and the power supply of 2.5V is provided to high-speed physical layer module, and the power supply of 3.3V is provided to photoelectric conversion module, and the power supply of 3.3V is provided to user's processing unit.
Supplementary module comprises FPGA configuration module and clock source etc.FPGA configuration module provides FPGA hardware configuration and debugging.Clock source provides work clock to FPGA.The speed of service of access node MAC layer module is 125MHz, and the high speed signal being connected with photoelectric conversion module operates in 1.25GHz.
As shown in Figure 3, the access node system based on Gigabit Passive Optical Network provided by the invention, total adopts star-like form to build, and mainly comprises Centroid, access node device and optical branching device.Access node device is connected with Centroid along separate routes by light.Access node device is the important step that user data service enters networking communication, in whole network, play the effect of data terminal, be responsible for that user data is packaged into network data frame and in fiber optic network, complete transmission exchange, between multiple access node devices, distribute according to Centroid simultaneously separately independently time slot without the transmission that completes each frame of conflict competition.
In downlink data transmission, adopt the mode of broadcast, downlink data will reach each access node device by shared fiber channel, and these descending packets comprise that broadcast packet, multicast packets or clean culture receive bag.Access node device receives and in descending Frame, has comprised destination address information, gap information and user data information.The destination address of each access node device resolution data bag, the incoherent data of filtering, receive the packet oneself needing.
In transmitting uplink data, adopt time-multiplexed mode, each access node device can receive the time slot window that Centroid distributes in one takes turns communication cycle, in this time slot window, open laser and carry out uploading of data, multiple like this access node devices just can carry out up channel multiplexing, avoid the conflict of the transfer of data on each node simultaneously.
As shown in Figure 4, Figure 5, in the netinit stage, access node device enters initialization flow process after energising.First the GATE frame that can wait for Centroid arrives, and access node device can ask to add network by replying REPORT frame, simultaneously by GATE frame and REPORT frame, can complete range finding and synchronous to access node device.Last access node device sends and next network startup frame at initial phase receiving center node, i.e. START frame, extracts the time window information field of self by parsing, and so far network completes initialization and enters data communication phase.
In data communication phase, be divided into two large parts, TDM time slot and OAM time slot.When the time is in TDM time slot time, access node device is opened laser in the mandate time slot situation that enters Centroid distribution, network data frame is sent, and the continuous descending network frame of receiving center node, extract the Frame that meets self destination address, extraction timestamp information wherein by parsings, complete the calculating of next round mandate time slot and dynamically adjust, extract validated user data segment, by decapsulation, user data is submitted to user.In OAM time slot section, if access node device is the node newly adding, so at the inquiry frame of this time slot Duan Hui responsing center node, it is REG_OPEN frame, and the request of replying adds incoming frame, be REG_REQ frame, the reply acknowledgement frame of final receiving center node, REG_ACK frame completes to register and adds network; If access node device is online, report respectively the data transmit-receive situation of self and respond configuration management frame at statistical management frame and the configuration management frame of OAM time slot meeting responsing center node so, complete customer service speed, add some row configuration tasks such as mode.Network data frame format, as shown in Figure 6, network control frame format, as shown in Figure 7.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. the access node device based on Gigabit Passive Optical Network, is characterized in that, comprises power module, access node MAC layer module, high-speed physical layer module, customer service processing module and photoelectric conversion module;
Wherein, described power module is electrically connected with described access node MAC layer module, high-speed physical layer module, customer service processing module and photoelectric conversion module respectively; Described photoelectric conversion module is connected with described access node MAC layer module communication by described high-speed physical layer module; Described customer service processing module connects described access node MAC layer module;
Described photoelectric conversion module is for the conversion process between the signal of telecommunication and light signal; Control signal, voice signal and vision signal that described customer service processing module need to be transmitted by Gigabit Passive Optical Network for the treatment of user; Described high-speed physical layer module has been used for transmission processing and the reception & disposal of physical-layer data frame; Described access node MAC layer module is used for reading and writing user service data; Described power module is for the power supply of described access node MAC layer module, high-speed physical layer module, customer service processing module and photoelectric conversion module.
2. the access node device based on Gigabit Passive Optical Network according to claim 1, is characterized in that, customer service processing module comprises interconnective customer service module and business datum buffer memory fifo module; Described customer service module is connected with access node MAC layer module by business datum buffer memory fifo module; Described customer service processing module is used for collection and the playback of voice, video and control signal, and to complete packing and the parsing of unified data segment through three kinds of signals of signal condition; Described business datum buffer memory fifo module is for the temporary and read-write of data between user's processing module and access node MAC layer module.
3. the access node device based on Gigabit Passive Optical Network according to claim 1 and 2, is characterized in that, described high-speed physical layer module comprises PHY bursty data transmitting element and PHY data receiver unit; Described high-speed physical layer module is connected with described access node MAC layer module by the gmii interface of standard; Described PHY bursty data transmitting element at the time slot window of access node by the bursty traffic settling signal coding, the parallel-serial conversion that receive from access node MAC layer module, and export serial data stream to photoelectric conversion module; Described PHY data receiver unit, for receiving the serial data stream of photoelectric conversion module output, and goes here and there and conversion, signal decoding, the parallel data frame with byte form is exported to access node MAC layer module; Described access node MAC layer module is connected described photoelectric conversion module by PHY bursty data transmitting element with PHY data receiver unit respectively.
4. the access node device based on Gigabit Passive Optical Network according to claim 3, it is characterized in that, described access node MAC layer module comprises sequence control unit, frame resolution unit, data encapsulation unit, user's access unit, MAC data transmission unit and MAC data receiver unit; Sequence control unit, for receiving the timing information of network, calculates the time of each time slot window, and real-time informing MAC data transmission unit, controls the transmission task of opening; Frame resolution unit, for resolving the information such as the source address that wherein comprises, destination address, frame type from receiving buffer memory, is made corresponding processing and output; Data encapsulation unit, for encapsulating the MAC layer data frame that need to send to network; User's access unit is for connecting the data buffer storage FIFO of customer service processing module, carry out customer service is processed to FIFO read and write task; MAC data transmission unit is for being sent to high-speed physical layer module by MAC layer data frame; MAC data receiver unit is for receiving MAC layer data frame from high-speed physical layer module; Described high-speed physical layer module connects described business datum buffer memory fifo module by MAC data receiver unit, frame resolution unit, user's access unit successively; Described business datum buffer memory fifo module connects described high-speed physical layer module by user's access unit, data encapsulation unit, MAC data transmission unit successively; Described frame resolution unit connects respectively described data encapsulation unit and described MAC data transmission unit by sequence control unit.
5. the access node device based on Gigabit Passive Optical Network according to claim 2, is characterized in that, described customer service module comprises control signal processing unit, voice signal processing unit and video signal processing unit; Control signal processing unit is used for acquisition process control signal and switching value signal, and deposits valid data separately in business datum buffer memory fifo module; Voice signal processing unit is used for acquisition process analog voice signal, digitized processing, and deposit voice digital signal in business datum buffer memory fifo module; Video signal processing unit is used for acquisition process analog video signal, digitized processing, and deposit picture signal in business datum buffer memory fifo module; Control signal processing unit, voice signal processing unit and video signal processing unit all connect described access node MAC layer module by business datum buffer memory fifo module.
6. the access node device based on Gigabit Passive Optical Network according to claim 1, is characterized in that, described photoelectric conversion module comprises access point photoelectric conversion unit and output point electrooptic switching element; Described access point photoelectric conversion unit is used for the light signal receiving to be converted to the signal of telecommunication, and sends to access node MAC layer module by high-speed physical layer module; Described output point electrooptic switching element is for being converted to light signal by the signal of telecommunication sending over from described access node MAC layer module by high-speed physical layer module.
7. the access node device based on Gigabit Passive Optical Network according to claim 4, is characterized in that, the pattern of described photoelectric conversion module receiving optical signals is that continuity receives, and described photoelectric conversion module utilizing emitted light signal mode is sudden transmitting.
8. the access node device based on Gigabit Passive Optical Network according to claim 1, is characterized in that, also comprise supplementary module, described supplementary module comprises FPGA dispensing unit and clock source; FPGA dispensing unit is for being solidificated in a FPGA dispensing unit by configuration data; Clock source is used for providing clock reference; Described FPGA dispensing unit is connected described access node MAC layer module, high-speed physical layer module and customer service processing module respectively with described clock source.
9. the access node system based on Gigabit Passive Optical Network, is characterized in that, comprises in several claims 1 to 8 described in any one that access node device, the light based on Gigabit Passive Optical Network divides router and Centroid;
Wherein, described Centroid divides router to be connected with the described access node device based on Gigabit Passive Optical Network by light.
10. the access node system based on Gigabit Passive Optical Network according to claim 9, it is characterized in that, in the time of transmitting uplink data, adopt time-multiplexed mode, be that each described access node device can receive the time slot window that Centroid distributes in one takes turns communication cycle, each described access node device is opened laser and is carried out uploading of data in this time slot window.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104639898A (en) * | 2015-01-27 | 2015-05-20 | 上海电控研究所 | Multifunctional service transmission device based on Rapidio switching network |
| CN107171978A (en) * | 2017-05-26 | 2017-09-15 | 中国科学院西安光学精密机械研究所 | The multi-channel data circle collection system and acquisition method of gigabit Ethernet |
| WO2018039928A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Data transmission method and apparatus |
| CN109905321A (en) * | 2019-02-13 | 2019-06-18 | 西安微电子技术研究所 | A kind of route control system interacted for customized high-speed interface with Ethernet |
| CN111130961A (en) * | 2019-12-30 | 2020-05-08 | 中国电子科技集团公司第五十四研究所 | High-efficiency gigabit Ethernet access device in scattering communication |
| CN111147146A (en) * | 2020-01-03 | 2020-05-12 | 杭州和利时自动化有限公司 | Optical fiber network-based photoelectric transceiving system of industrial field bus |
| CN114389703A (en) * | 2021-12-01 | 2022-04-22 | 武汉华中天经通视科技有限公司 | Laser communication Ethernet transparent transmission and multi-path switching device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101516046A (en) * | 2009-03-18 | 2009-08-26 | 深圳市讯达康通讯设备有限公司 | Transmission method of Ethernet passive optical network |
| CN101651492A (en) * | 2008-08-15 | 2010-02-17 | 华为技术有限公司 | Remote transmission device, remote transmission system and abnormal luminous fault processing method for optical access network |
| US20100104288A1 (en) * | 2007-07-31 | 2010-04-29 | Ruobin Zheng | Method, apparatus and system for bearing ip packets over passive optical network |
| CN103491461A (en) * | 2013-09-22 | 2014-01-01 | 上海电控研究所 | Center node device based on gigabit passive optical network |
-
2014
- 2014-04-17 CN CN201410155781.1A patent/CN103986984A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100104288A1 (en) * | 2007-07-31 | 2010-04-29 | Ruobin Zheng | Method, apparatus and system for bearing ip packets over passive optical network |
| CN101651492A (en) * | 2008-08-15 | 2010-02-17 | 华为技术有限公司 | Remote transmission device, remote transmission system and abnormal luminous fault processing method for optical access network |
| CN101516046A (en) * | 2009-03-18 | 2009-08-26 | 深圳市讯达康通讯设备有限公司 | Transmission method of Ethernet passive optical network |
| CN103491461A (en) * | 2013-09-22 | 2014-01-01 | 上海电控研究所 | Center node device based on gigabit passive optical network |
Non-Patent Citations (2)
| Title |
|---|
| 林琰: "《光纤实时以太网MAC协议的设计与实现》", 《中国优秀硕士学位论文全文数据库》 * |
| 龙群: "《基于PON的光纤实时以太网硬件设计与实现》", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104639898A (en) * | 2015-01-27 | 2015-05-20 | 上海电控研究所 | Multifunctional service transmission device based on Rapidio switching network |
| CN104639898B (en) * | 2015-01-27 | 2018-05-18 | 上海电控研究所 | A kind of multifunctional service transmitting device based on Rapidio exchange networks |
| WO2018039928A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Data transmission method and apparatus |
| CN107171978A (en) * | 2017-05-26 | 2017-09-15 | 中国科学院西安光学精密机械研究所 | The multi-channel data circle collection system and acquisition method of gigabit Ethernet |
| CN107171978B (en) * | 2017-05-26 | 2019-08-27 | 中国科学院西安光学精密机械研究所 | The multi-channel data circle collection system and acquisition method of gigabit Ethernet |
| CN109905321A (en) * | 2019-02-13 | 2019-06-18 | 西安微电子技术研究所 | A kind of route control system interacted for customized high-speed interface with Ethernet |
| CN109905321B (en) * | 2019-02-13 | 2021-01-05 | 西安微电子技术研究所 | Routing control system for interaction between user-defined high-speed interface and Ethernet |
| CN111130961A (en) * | 2019-12-30 | 2020-05-08 | 中国电子科技集团公司第五十四研究所 | High-efficiency gigabit Ethernet access device in scattering communication |
| CN111147146A (en) * | 2020-01-03 | 2020-05-12 | 杭州和利时自动化有限公司 | Optical fiber network-based photoelectric transceiving system of industrial field bus |
| CN114389703A (en) * | 2021-12-01 | 2022-04-22 | 武汉华中天经通视科技有限公司 | Laser communication Ethernet transparent transmission and multi-path switching device |
| CN114389703B (en) * | 2021-12-01 | 2023-12-22 | 武汉华中天经通视科技有限公司 | Transparent transmission and multipath switching device for laser communication Ethernet |
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