CN101783980B - Optical transmission device and passive optical network system - Google Patents
Optical transmission device and passive optical network system Download PDFInfo
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- CN101783980B CN101783980B CN201010133651.XA CN201010133651A CN101783980B CN 101783980 B CN101783980 B CN 101783980B CN 201010133651 A CN201010133651 A CN 201010133651A CN 101783980 B CN101783980 B CN 101783980B
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- H04Q11/00—Selecting arrangements for multiplex systems
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- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
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Abstract
The invention relates to an optical transmission device device and a passive optical network (PON) system. The optical transmission device comprises a first signal-processing module, a first service-processing module and a first central control module, wherein the first signal-processing module is used for communicating with an optical line terminal (OLT) by the optical distribution network (ODN)-simulating function, receiving a PON service signal and encapsulating the PON service signal into an optical transmission signal in a standard format, the first service-processing module is connected with the first signal-processing module for the service line treatment of the optical transmission signal in the standard format, and the first central control module is respectively connected with the first signal-processing module and the first service-processing module for controlling the operation of various modules. By arranging the simulation units with the ODN-simulating function and the OLT-simulating function, the invention realizes the seamless connection of the PON system and can ensure the correct response of both parties of a hybrid system and satisfy the requirement of the hybrid system.
Description
Technical field
The present invention relates to Optical Access Network technical field, be specifically related to a kind of light transmitting device and passive optical network.
Background technology
EPON (Passive Optical Network, be called for short PON) technology is the broadband access technology of a kind of super quality and competitive price of development in recent years.Fig. 1 is the structural representation of prior art PON system.As shown in Figure 1, existing PON system generally includes optical line terminal (Optical Line Terminal, be called for short OLT), optical network unit (Optical Network Unit, be called for short ONU) and optical distribution network (Optical Distributed Network, be called for short ODN), signal transmission is processed and converted to business first at OLT, signal transmission is transferred on the optical splitter of ODN by optical link (optical fiber), optical splitter separates each client's signal, and then by optical link, client's signal is delivered in ONU.Wherein, OLT is arranged on central machine room, as the exchange processing of PON service processing equipment responsible PON service signal, is a switch or router, still a multi-service provides platform simultaneously, can also carry out allocated bandwidth, network security and administration configuration for different user.ODN mainly connects OLT and ONU by one or several optical splitter (Splitter), its function is distribution downlink data and concentrates upstream data, mainly each client's signal separately, be sent to again ONU, be also responsible for the signal of each ONU to converge and be sent to again on optical link simultaneously.ONU is each client's client, is responsible for processing the signal that optical splitter sends, and making signal convert client to can the actual signal using.
In order to increase substantially transmission range and to improve transmission capacity, prior art has proposed the hybrid system of a kind of PON system and optical transmission system, this hybrid system is, between OLT and ODN, optical transmission device is set, after the optical transmission device of system side is positioned at OLT, before the optical transmission device of end side is positioned at ODN.In hybrid system, the optical transmission device that business is sent into system side after OLT processes, carries out signal processing by the optical transmission device of system side, PON service signal is packaged into the optical transmission signal of reference format, then carries out long-distance transmissions.Signal arrives behind destination, is first processed by the optical transmission device of end side, and the optical transmission signal of reference format is reduced into PON service signal, is finally sent to ONU through ODN in a traditional way again.
In existing PON system, the communication between OLT and ODN such as limits if having time at the requirement, and hybrid system arranges after light transmitting device, due to the time delay of light transmitting device, makes existing hybrid system have the technological deficiencies such as both sides' response time does not meet the demands.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of light transmitting device and passive optical network, effectively solves the technological deficiency that in existing hybrid system, response time does not meet the demands.
For solving the problems of the technologies described above, the invention provides a kind of light transmitting device, comprising:
First signal processing module, for being carried out communication and received PON service signal by simulated light distribution network function and optical line terminal, is packaged into described PON service signal the optical transmission signal of reference format;
The first Service Processing Module, is connected with described first signal processing module, for the optical transmission signal of described reference format being carried out to circuit processing in business;
The first Central Control Module, is connected with described first signal processing module and the first Service Processing Module respectively, for controlling the operation of each module.
Further, described first signal processing module comprises:
The first analogue unit, is connected with described the first Central Control Module, has simulated light distribution network function, for being carried out communication and received PON service signal by simulated light distribution network function and optical line terminal;
The first encapsulation unit, is connected with described the first analogue unit, the first Service Processing Module and the first Central Control Module respectively, for described PON service signal being packaged into the optical transmission signal of reference format.
Further, described the first analogue unit comprises that the first center processing subelement, OLT information receive subelement, OLT information sends subelement, actual ONU information reception subelement and OLT and replys subelement, wherein:
OLT information receives subelement, is connected with the first center processing subelement, for receiving OLT information from OLT, and sends to the first center processing subelement;
OLT information sends subelement, is connected with the first center processing subelement, for receiving OLT information from the first center processing subelement, and sends on optical link;
Actual ONU information receives subelement, is connected with the first center processing subelement, for receive actual ONU information from optical link, and sends to the first center processing subelement;
OLT replys subelement, is connected with the first center processing subelement, for according to the instruction of the first center processing subelement, the ONU information of actual ONU information or simulation is sent to OLT;
The first center processing subelement, be used for receiving OLT information and be transmitted to OLT information and send subelement, go out to need ONU list to be processed according to OLT information analysis, to ONU, the ONU information that obtains simulation is processed in list, judge whether to receive actual ONU information, while receiving, control OLT replys subelement and sends actual ONU information, confiscate then, control OLT and reply the ONU information that subelement transmission is simulated.
For solving the problems of the technologies described above, the present invention also provides another kind of light transmitting device, comprising:
The second Service Processing Module, for carrying out circuit processing under business to the optical transmission signal of reference format;
Secondary signal processing module, is connected with described the second Service Processing Module, for the optical transmission signal deblocking of described reference format is dressed up to PON service signal, is carried out communication and is sent described PON service signal by OLT-simulating function and optical distribution network;
The second Central Control Module, is connected with described secondary signal processing module and the second Service Processing Module respectively, for controlling the operation of each module.
Further, described secondary signal processing module comprises:
The second encapsulation unit, is connected with described the second Central Control Module and the second Service Processing Module respectively, for the optical transmission signal deblocking of described reference format is dressed up to PON service signal;
The second analogue unit, is connected with described the second encapsulation unit and the second Central Control Module respectively, has OLT-simulating function, for being carried out communication and sent PON service signal by OLT-simulating function and optical distribution network.
Further, described the second analogue unit comprises that the second center processing subelement, ONU information receive subelement, ONU information sends subelement, actual OLT information reception subelement and synthetic OLT information and sends subelement, wherein:
ONU information receives subelement, is connected with the second center processing subelement, for receiving ONU information from ODN, and sends to the second center processing subelement;
ONU information sends subelement, is connected with the second center processing subelement, for receiving ONU information from the second center processing subelement, and sends on optical link;
Actual OLT information receives subelement, is connected with the second center processing subelement, for receive actual OLT information from optical link, and sends to the second center processing subelement;
The second center processing subelement, for receiving ONU information and actual OLT information, ONU information is transmitted to ONU information and sends subelement, according to ONU information, actual OLT information is processed, obtain synthetic OLT information and send to synthetic OLT information to send subelement;
Synthetic OLT information sends subelement, is connected, for receiving synthetic OLT information and send to ODN from the second center processing subelement with the second center processing subelement.
For solving the problems of the technologies described above, the present invention also provides another light transmitting device, comprising:
First signal processing module, for being carried out communication and received PON service signal by simulated light distribution network function and optical line terminal, is packaged into PON service signal the optical transmission signal of reference format;
Secondary signal processing module, for the optical transmission signal deblocking of reference format is dressed up to PON service signal, is carried out communication and is sent PON service signal by OLT-simulating function and optical distribution network;
Service Processing Module, is connected with described first signal processing module and secondary signal processing module respectively, for the optical transmission signal of reference format is carried out in business that circuit is processed or business under circuit processing;
Central Control Module, is connected with described first signal processing module, secondary signal processing module and Service Processing Module respectively, for controlling the operation of each module.
Further, described first signal processing module comprises:
The first analogue unit, is connected with described Central Control Module, has simulated light distribution network function, for being carried out communication and received PON service signal by simulated light distribution network function and optical line terminal;
The first encapsulation unit, is connected with described the first analogue unit, Service Processing Module and Central Control Module respectively, for described PON service signal being packaged into the optical transmission signal of reference format.
Further, described the first analogue unit comprises that the first center processing subelement, OLT information receive subelement, OLT information sends subelement, actual ONU information reception subelement and OLT and replys subelement, wherein:
OLT information receives subelement, is connected with the first center processing subelement, for receiving OLT information from OLT, and sends to the first center processing subelement;
OLT information sends subelement, is connected with the first center processing subelement, for receiving OLT information from the first center processing subelement, and sends on optical link;
Actual ONU information receives subelement, is connected with the first center processing subelement, for receive actual ONU information from optical link, and sends to the first center processing subelement;
OLT replys subelement, is connected with the first center processing subelement, for according to the instruction of the first center processing subelement, the ONU information of actual ONU information or simulation is sent to OLT;
The first center processing subelement, be used for receiving OLT information and be transmitted to OLT information and send subelement, go out to need ONU list to be processed according to OLT information analysis, to ONU, the ONU information that obtains simulation is processed in list, judge whether to receive actual ONU information, while receiving, control OLT replys subelement and sends actual ONU information, confiscate then, control OLT and reply the ONU information that subelement transmission is simulated.
Further, described secondary signal processing module comprises:
The second encapsulation unit, is connected with described Central Control Module and Service Processing Module respectively, for the optical transmission signal deblocking of described reference format is dressed up to PON service signal;
The second analogue unit, is connected with described the second encapsulation unit and Central Control Module respectively, has OLT-simulating function, for being carried out communication and sent PON service signal by OLT-simulating function and optical distribution network.
Further, described the second analogue unit comprises that the second center processing subelement, ONU information receive subelement, ONU information sends subelement, actual OLT information reception subelement and synthetic OLT information and sends subelement, wherein:
ONU information receives subelement, is connected with the second center processing subelement, for receiving ONU information from ODN, and sends to the second center processing subelement;
ONU information sends subelement, is connected with the second center processing subelement, for receiving ONU information from the second center processing subelement, and sends on optical link;
Actual OLT information receives subelement, is connected with the second center processing subelement, for receive actual OLT information from optical link, and sends to the second center processing subelement;
The second center processing subelement, for receiving ONU information and actual OLT information, ONU information is transmitted to ONU information and sends subelement, according to ONU information, actual OLT information is processed, obtain synthetic OLT information and send to synthetic OLT information to send subelement;
Synthetic OLT information sends subelement, is connected, for receiving synthetic OLT information and send to ODN from the second center processing subelement with the second center processing subelement.
For solving the problems of the technologies described above, the present invention also provides a kind of passive optical network, comprises the optical line terminal, optical distribution network and the optical network unit that connect successively by circuit, also comprises aforesaid light transmitting device; Described light transmitting device can be arranged between optical line terminal and optical distribution network, and after being positioned at optical line terminal; Described light transmitting device also can be arranged between optical line terminal and optical distribution network, and before being positioned at optical distribution network; Described light transmitting device can also be arranged between optical line terminal and optical distribution network, and after laying respectively at optical line terminal and before optical distribution network.
The invention provides a kind of light transmitting device and passive optical network, there is simulated light distribution network function and the analogue unit with OLT-simulating function by setting, make the present invention carry out communication by the optical line terminal in simulated light distribution network function and PON system, carry out communication by the optical distribution network in OLT-simulating function and PON system, realize the slitless connection of PON system, therefore can guarantee correctly replying of hybrid system both sides, meet the requirement of hybrid system.The advantage such as the present invention has that cost is low, integrated level is high, practical and versatility is good, the further competitiveness of improving product and user's satisfaction, has a good application prospect and use value.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art PON system;
Fig. 2 is the structural representation of light transmitting device the first embodiment of the present invention;
Fig. 3 is the structural representation of light transmitting device the first analogue unit of the present invention;
Fig. 4 is the structural representation of light transmitting device the second embodiment of the present invention;
Fig. 5 is the structural representation of light transmitting device the second analogue unit of the present invention;
Fig. 6 is the structural representation of light transmitting device of the present invention the 3rd embodiment;
Fig. 7 is the structural representation of embodiment of the present invention passive optical network.
Embodiment
Below in conjunction with accompanying drawing, technical solution of the present invention is described in further details.
Fig. 2 is the structural representation of light transmitting device the first embodiment of the present invention.As shown in Figure 2, the present embodiment light transmitting device comprises the first Central Control Module 10, first signal processing module 11 and the first Service Processing Module 12.Wherein, first signal processing module 11 is connected with the first Central Control Module 10, for being carried out communication and received PON service signal by simulation ODN function and OLT, PON service signal is packaged into the optical transmission signal of reference format; The first Service Processing Module 12 is connected with the first Central Control Module 10 and first signal processing module 11 respectively, for receive the optical transmission signal of reference format from first signal processing module 11, the optical transmission signal of reference format is carried out to circuit processing in business; The first Central Control Module 10 is connected with first signal processing module 11 and the first Service Processing Module 12 respectively, for controlling or change the operation of each module.
The light transmitting device that the present embodiment provides is applied to the hybrid system of PON system and optical transmission system, is arranged on system side, after the present embodiment light transmitting device is positioned at OLT, carries out PON service signal being packaged into after communication the optical transmission signal of reference format.Particularly, the present embodiment first signal processing module 11 comprises the first analogue unit and the first encapsulation unit, and the first analogue unit has simulation ODN function, for being carried out communication and received PON service signal by simulation ODN function and OLT; The first encapsulation unit is connected with the first analogue unit and the first Service Processing Module 12 respectively, for receiving PON service signal from the first analogue unit, PON service signal is packaged into the optical transmission signal of reference format, and sends to the first Service Processing Module 12; In addition, the first analogue unit is also connected with the first Central Control Module 10 respectively with the first encapsulation unit.In the present embodiment, light transmitting device also comprises the functional module 13 being connected with the first Central Control Module 10, and functional module 13 is for realizing other function of light transmitting device, and its structure is identical with the functional module in existing light transmitting device with effect.
The course of work of the present embodiment light transmitting device is: PON service signal is sent to the present embodiment light transmitting device by the OLT in PON system, the first analogue unit in the present embodiment light transmitting device carries out communication by simulation ODN function and OLT, and receive PON service signal, this PON service signal is packaged into the optical transmission signal of reference format by the first encapsulation unit, finally, the first Service Processing Module carries out circuit processing in business to the optical transmission signal of reference format, sends on optical link and transmits.
In existing PON system, the requirements such as the communication between OLT and ODN limits if having time, the technological deficiency that due to light transmitting device time delay, response time is not met the demands in order to solve existing hybrid system, the present embodiment is by having the analogue unit of simulation ODN function in system side setting, make the present embodiment light transmitting device carry out communication by the OLT in simulation ODN function and PON system, realize light transmitting device and the PON system slitless connection in system side, therefore can guarantee correctly replying of hybrid system both sides, meet the requirement of hybrid system.
Fig. 3 is the structural representation of light transmitting device the first analogue unit of the present invention.As shown in Figure 3, the present embodiment the first analogue unit comprises that the first center processing subelement, OLT information receive subelement, OLT information sends subelement, actual ONU information reception subelement and OLT and replys subelement.Wherein, OLT information receives subelement and is connected with the first center processing subelement, for receiving OLT information from OLT, and sends to the first center processing subelement.OLT information sends subelement and is connected with the first center processing subelement, for receiving OLT information from the first center processing subelement, and sends on optical link.Actual ONU information receives subelement and is connected with the first center processing subelement, for receive actual ONU information from optical link, and sends to the first center processing subelement.OLT replys subelement and is connected with the first center processing subelement, for according to the instruction of the first center processing subelement, the ONU information of actual ONU information or simulation is sent to OLT.The first center processing subelement is used for receiving OLT information and is transmitted to OLT information transmission subelement, go out to need ONU list to be processed according to OLT information analysis, to ONU, the ONU information that obtains simulation is processed in list, judge whether to receive actual ONU information, while receiving, control OLT replys subelement and sends actual ONU information, confiscates then, controls OLT and replys the ONU information that subelement transmission is simulated.
The workflow of the present embodiment the first analogue unit is: OLT information receives subelement and receives OLT information from OLT, and sends to the first center processing subelement; The first center processing subelement receives after OLT information, goes out to need ONU list to be processed according to OLT information analysis, ONU list is processed successively to the ONU information that obtains simulation; After processing, the first center processing subelement is transmitted to OLT information OLT information transmission subelement and controls it and forwards to opposite equip. by optical link on the one hand, judge whether that on the other hand receiving subelement from actual ONU information receives the actual ONU information from opposite equip., while receiving, control OLT replys subelement and sends actual ONU information, confiscate then, control OLT and reply the ONU information that subelement transmission is simulated.By said process, the present embodiment the first analogue unit has realized simulation ODN function and OLT carries out communication.
In practical application, the thering is simulation ODN function and can be accomplished in several ways, the modes such as such as pure software simulation, fpga logic simulation, special chip simulation or mixed form simulation of the present embodiment the first analogue unit.Pure software simulation is in CPU, to increase corresponding program, simulates ODN function with software; Fpga logic simulation is to use fpga logic to realize ODN function, and CPU increases the control to fpga logic; Special chip simulation is to use special chip to realize ODN function, increases the control to special chip in CPU; Mixed form simulation is respectively to complete a part of ODN functional simulation by software and fpga logic or software and special chip, joins together to realize complete functional simulation.In the present embodiment, in business, circuit processing is to send on optical link and transmit after the data of receiving are split, recombinated and pack, and this processing procedure and the relevant process such as communication and encapsulation, by those skilled in the art are understood, repeat no more here.
The present embodiment light transmitting device can be realized by increase corresponding function in existing light transmitting device, in existing light transmitting device, increase simulated light distribution network function, increase corresponding control at the first Central Control Module (also claiming cpu controller) simultaneously.Can realize relevant transformation completely with the accumulation of prior art hardware and software technology, and there is the advantages such as cost is low, integrated level is high, practical.
Fig. 4 is the structural representation of light transmitting device the second embodiment of the present invention.As shown in Figure 4, the present embodiment light transmitting device comprises the second Central Control Module 20, secondary signal processing module 21 and the second Service Processing Module 22.Wherein, the second Service Processing Module 22 is connected with the second Central Control Module 20, for the optical transmission signal of reference format being carried out to circuit processing under business, sends the optical transmission signal of reference format to secondary signal processing module 21; Secondary signal processing module 21 is connected with the second Central Control Module 20 and the second Service Processing Module 22 respectively, for the optical transmission signal deblocking of reference format is dressed up to PON service signal, carry out communication and send PON service signal by simulation OLT function and ODN; The second Central Control Module 20 is connected with secondary signal processing module 21 and the second Service Processing Module 22 respectively, for controlling or change the operation of each module.
The light transmitting device that the present embodiment provides is applied to the hybrid system of PON system and optical transmission system, is arranged on end side, before the present embodiment light transmitting device is positioned at ODN, the optical transmission signal deblocking of reference format is dressed up to PON service signal.Particularly, the present embodiment secondary signal processing module 21 comprises the second analogue unit and the second encapsulation unit, the second encapsulation unit is connected with the second Service Processing Module 22, for receive the optical transmission signal of reference format from the second Service Processing Module 22, the optical transmission signal deblocking of reference format is dressed up to PON service signal; The second analogue unit is connected with the second encapsulation unit, has simulation OLT function, for carrying out communication by simulation OLT function and ODN, sends PON service signal to ODN; In addition, the second analogue unit is also connected with the second Central Control Module 20 respectively with the second encapsulation unit.In the present embodiment, light transmitting device also comprises the functional module 23 being connected with the second Central Control Module 20, and functional module 23 is for realizing other function of light transmitting device, and its structure is identical with the functional module in existing light transmitting device with effect.
The course of work of the present embodiment light transmitting device is: the optical transmission signal of reference format is sent to behind destination by optical link, first carry out circuit processing under business by the second Service Processing Module in the present embodiment light transmitting device, obtain the optical transmission signal of reference format, the optical transmission signal of this reference format is dressed up after PON service signal by the second encapsulation unit deblocking, carry out communication by the second analogue unit by simulation OLT function and ODN, PON service signal is sent to ODN.
In existing PON system, the requirements such as the communication between OLT and ODN limits if having time, the technological deficiency that due to light transmitting device time delay, response time is not met the demands in order to solve existing hybrid system, the present embodiment is by having the analogue unit of simulation OLT function in end side setting, make the present embodiment light transmitting device carry out communication by the ODN in simulation OLT function and PON system, realize light transmitting device and the PON system slitless connection in end side, therefore can guarantee correctly replying of hybrid system both sides, meet the requirement of hybrid system.
Fig. 5 is the structural representation of light transmitting device the second analogue unit of the present invention.As shown in Figure 5, the present embodiment the second analogue unit comprises that the second center processing subelement, ONU information receive subelement, ONU information sends subelement, actual OLT information reception subelement and synthetic OLT information and sends subelement.Wherein, ONU information receives subelement and is connected with the second center processing subelement, for receiving ONU information from ODN, and sends to the second center processing subelement.ONU information sends subelement and is connected with the second center processing subelement, for receiving ONU information from the second center processing subelement, and sends on optical link.Actual OLT information receives subelement and is connected with the second center processing subelement, for receive actual OLT information from optical link, and sends to the second center processing subelement.The second center processing subelement is for receiving ONU information and actual OLT information, ONU information is transmitted to ONU information and sends subelement, according to ONU information, actual OLT information is processed, obtained synthetic OLT information and send to synthetic OLT information to send subelement.Synthetic OLT information sends subelement and is connected with the second center processing subelement, for receiving synthetic OLT information and send to ODN from the second center processing subelement.
The workflow of the present embodiment the second analogue unit is: ONU information receives subelement and receives ONU information from ODN, and sending to the second center processing subelement, simultaneously actual OLT information receives subelement and after optical link receives actual OLT information, sends to the second center processing subelement.The second center processing subelement receives after ONU information and actual OLT information, according to ONU information, actual OLT information is processed, and obtains synthetic OLT information; After processing, the second center processing subelement is transmitted to ONU information ONU information transmission subelement and controls it and forwards to opposite equip. by optical link on the one hand, on the other hand synthetic OLT information is sent to synthetic OLT information to send subelement and control it and sends to ODN.By said process, the present embodiment the second analogue unit has realized simulation OLT function and ODN carries out communication.
In practical application, the thering is simulation OLT function and can be accomplished in several ways, the modes such as such as pure software simulation, fpga logic simulation, special chip simulation or mixed form simulation of the present embodiment the second analogue unit.Pure software simulation is in CPU, to increase corresponding program, simulates OLT function with software; Fpga logic simulation is to use fpga logic to realize OLT function, and CPU increases the control to fpga logic; Special chip simulation is to use special chip to realize OLT function, increases the control to special chip in CPU; Mixed form simulation is respectively to complete a part of OLT functional simulation by software and fpga logic or software and special chip, joins together to realize complete functional simulation.In the present embodiment, under business, circuit processing is to receive data from optical link, the data of reception are carried out to business and unpack, split and the processing such as restructuring, this processing procedure and the relevant process such as communication and decapsulation, by those skilled in the art are understood, repeat no more here.
The present embodiment light transmitting device can be realized by increase corresponding function in existing light transmitting device, in existing light transmitting device, increases simulation OLT function, increases corresponding control at Central Control Module (also claiming cpu controller) simultaneously.Can realize relevant transformation completely with the accumulation of prior art hardware and software technology, and there is the advantages such as cost is low, integrated level is high, practical.
Fig. 6 is the structural representation of light transmitting device of the present invention the 3rd embodiment.As shown in Figure 6, the present embodiment light transmitting device comprises Central Control Module 30, first signal processing module 11, secondary signal processing module 21 and Service Processing Module 40.Wherein, first signal processing module 11 is connected with Central Control Module 30, for being carried out communication and received PON service signal by simulation ODN function and OLT, PON service signal is packaged into the optical transmission signal of reference format; Secondary signal processing module 21 is connected with Central Control Module 30, for the optical transmission signal deblocking of reference format is dressed up to PON service signal, is carried out communication and is sent PON service signal by simulation OLT function and ODN; Service Processing Module 40 is connected with Central Control Module 30, first signal processing module 11 and secondary signal processing module 21 respectively, for the optical transmission signal of reference format is carried out in business to circuit is processed or business under circuit processing, receive the optical transmission signal of reference format from first signal processing module 11, the optical transmission signal of reference format is carried out to circuit processing in business, or the optical transmission signal of reference format is carried out to circuit processing under business, send the optical transmission signal of reference format to secondary signal processing module 21; Central Control Module 30 is connected with first signal processing module 11, secondary signal processing module 21 and Service Processing Module 40 respectively, for controlling or change the operation of each module.
The light transmitting device that the present embodiment provides is applied to the hybrid system of PON system and optical transmission system, be arranged on system side or end side, be after the present embodiment light transmitting device can be positioned at OLT, PON service signal is packaged into the optical transmission signal of reference format, also, before ODN can being positioned at, the optical transmission signal deblocking of reference format is dressed up to PON service signal.The present embodiment first signal processing module 11 comprises the first analogue unit and the first encapsulation unit, secondary signal processing module 21 comprises the second analogue unit and the second encapsulation unit, its structure, function and efficacy describe in detail in aforementioned two embodiment, repeat no more here.
The course of work of the present embodiment light transmitting device is: PON service signal is sent to the present embodiment light transmitting device by the OLT in PON system, the first analogue unit and OLT in the present embodiment light transmitting device carry out communication, and receive PON service signal, this PON service signal is packaged into the optical transmission signal of reference format by the first encapsulation unit, afterwards, Service Processing Module carries out circuit processing in business to the optical transmission signal of reference format, sends on optical link and transmits.The optical transmission signal of reference format is sent to behind destination by optical link, first carry out circuit processing under business by the Service Processing Module in the present embodiment light transmitting device, obtain the optical transmission signal of reference format, the optical transmission signal of this reference format is dressed up after PON service signal by the second encapsulation unit deblocking, carry out communication by the second analogue unit and ODN, PON service signal is sent to ODN.Finally, ODN is sent to ONU according to traditional approach, completes whole business transmission.
In existing PON system, the requirements such as the communication between OLT and ODN limits if having time, the technological deficiency that due to light transmitting device time delay, response time is not met the demands in order to solve existing hybrid system, the present embodiment is by having the analogue unit of simulation ODN function in system side setting, there is the analogue unit of simulation OLT function in end side setting, make the present embodiment light transmitting device carry out communication by the OLT in simulation ODN function and PON system, carry out communication by the ODN in simulation OLT function and PON system, realize light transmitting device and the PON system slitless connection in system side and end side, therefore can guarantee correctly replying of hybrid system both sides, meet the requirement of hybrid system.
In the present embodiment, the function of the first Central Control Module and the second Central Control Module in Central Control Module is integrated aforementioned two embodiment, the function of the first Service Processing Module and the second Service Processing Module in Service Processing Module is integrated aforementioned two embodiment, also can say, the present embodiment structure is the organic assembling of aforementioned two example structure.Equally, because the first encapsulation unit is close with the second encapsulation unit function, also can adopt the function of integrated first encapsulation unit of encapsulation unit and the second encapsulation unit in actual use, the first encapsulation unit and the second encapsulation unit are structure as a whole.
The present embodiment light transmitting device can be realized by increase corresponding function in existing light transmitting device, in existing light transmitting device, increase simulation ODN function and simulate OLT function and realize, not only there is the advantages such as cost is low, integrated level is high, practical, also have advantages of that versatility is good, further the competitiveness of improving product and user's satisfaction, have a good application prospect and use value.
Fig. 7 is the structural representation of embodiment of the present invention passive optical network.As shown in Figure 7, the present embodiment passive optical network comprises optical line terminal 1, optical distribution network 2, optical network unit 3, the first light transmitting device 4 and the second light transmitting device 5, optical line terminal 1 processes and sends PON service signal for operation exchange, the first light transmitting device 4 is connected with optical line terminal 1, be used for simulating ODN function, PON service signal is packaged into the optical transmission signal of reference format, the second light transmitting device 5 is connected by optical link with the first light transmitting device 4, be used for simulating OLT function, the optical transmission signal deblocking of reference format is dressed up to PON service signal, optical distribution network 2 is connected with the second light transmitting device 5, be used for distributing downlink data and concentrate upstream data, by each client's signal separately, optical network unit 3 is connected with optical distribution network 2, can the actual signal using for signal being converted to client.Particularly, optical line terminal 1 is arranged on central machine room, is a switch or router, and still a multi-service provides platform simultaneously, can also carry out allocated bandwidth, network security and administration configuration for different user.The first light transmitting device 4, as the light transmitting device of system side, after being arranged on optical line terminal 1, both can adopt the structure of light transmitting device the first embodiment of the present invention, also can adopt the structure of light transmitting device of the present invention the 3rd embodiment.The second light transmitting device 5, as the light transmitting device of end side, before being arranged on optical distribution network 2, both can adopt the structure of light transmitting device the second embodiment of the present invention, also can adopt the structure of light transmitting device of the present invention the 3rd embodiment.Optical distribution network 2 comprises several optical splitters, and each optical splitter is connected with second light transmitting device 5.Optical network unit 3 comprises several groups of clients, and each groups of clients comprises several clients, and the several clients in each groups of clients are connected with an optical splitter respectively.
In the embodiment of the present invention, optical line terminal, optical distribution network and optical network unit are all identical with the equipment in existing PON system, structure, the function and efficacy of the first light transmitting device and the second light transmitting device describe in detail in three embodiment of light transmitting device of the present invention, repeat no more here.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a light transmitting device, is characterized in that, comprising:
First signal processing module, for being carried out communication and received passive optical network PON service signal by simulated light distribution network function and optical line terminal, is packaged into described PON service signal the optical transmission signal of reference format;
The first Service Processing Module, is connected with described first signal processing module, for the optical transmission signal of described reference format being carried out to circuit processing in business;
The first Central Control Module, is connected with described first signal processing module and the first Service Processing Module respectively, for controlling the operation of each module;
Described first signal processing module comprises:
The first analogue unit, is connected with described the first Central Control Module, has simulated light distribution network function, for being carried out communication and received PON service signal by simulated light distribution network function and optical line terminal;
The first encapsulation unit, is connected with described the first analogue unit, the first Service Processing Module and the first Central Control Module respectively, for described PON service signal being packaged into the optical transmission signal of reference format;
Described the first analogue unit comprises that the first center processing subelement, OLT information receive subelement, OLT information sends subelement, actual ONU information reception subelement and OLT and replys subelement, wherein:
OLT information receives subelement, is connected with the first center processing subelement, for receiving OLT information from OLT, and sends to the first center processing subelement;
OLT information sends subelement, is connected with the first center processing subelement, for receiving OLT information from the first center processing subelement, and sends on optical link;
Actual ONU information receives subelement, is connected with the first center processing subelement, for receive actual ONU information from optical link, and sends to the first center processing subelement;
OLT replys subelement, is connected with the first center processing subelement, for according to the instruction of the first center processing subelement, the ONU information of actual ONU information or simulation is sent to OLT;
The first center processing subelement, be used for receiving OLT information and be transmitted to OLT information and send subelement, go out to need ONU list to be processed according to OLT information analysis, to ONU, the ONU information that obtains simulation is processed in list, judge whether to receive actual ONU information, while receiving, control OLT replys subelement and sends actual ONU information, confiscate then, control OLT and reply the ONU information that subelement transmission is simulated.
2. a light transmitting device, is characterized in that, comprising:
The second Service Processing Module, for carrying out circuit processing under business to the optical transmission signal of reference format;
Secondary signal processing module, is connected with described the second Service Processing Module, for the optical transmission signal deblocking of described reference format is dressed up to PON service signal, is carried out communication and is sent described PON service signal by OLT-simulating function and optical distribution network;
The second Central Control Module, is connected with described secondary signal processing module and the second Service Processing Module respectively, for controlling the operation of each module;
Described secondary signal processing module comprises:
The second encapsulation unit, is connected with described the second Central Control Module and the second Service Processing Module respectively, for the optical transmission signal deblocking of described reference format is dressed up to PON service signal;
The second analogue unit, is connected with described the second encapsulation unit and the second Central Control Module respectively, has OLT-simulating function, for being carried out communication and sent PON service signal by OLT-simulating function and optical distribution network;
Described the second analogue unit comprises that the second center processing subelement, ONU information receive subelement, ONU information sends subelement, actual OLT information reception subelement and synthetic OLT information and sends subelement, wherein:
ONU information receives subelement, is connected with the second center processing subelement, for receiving ONU information from ODN, and sends to the second center processing subelement;
ONU information sends subelement, is connected with the second center processing subelement, for receiving ONU information from the second center processing subelement, and sends on optical link;
Actual OLT information receives subelement, is connected with the second center processing subelement, for receive actual OLT information from optical link, and sends to the second center processing subelement;
The second center processing subelement, for receiving ONU information and actual OLT information, ONU information is transmitted to ONU information and sends subelement, according to ONU information, actual OLT information is processed, obtain synthetic OLT information and send to synthetic OLT information to send subelement;
Synthetic OLT information sends subelement, is connected, for receiving synthetic OLT information and send to ODN from the second center processing subelement with the second center processing subelement.
3. a light transmitting device, is characterized in that, comprising:
First signal processing module, for being carried out communication and received PON service signal by simulated light distribution network function and optical line terminal, is packaged into PON service signal the optical transmission signal of reference format;
Secondary signal processing module, for the optical transmission signal deblocking of reference format is dressed up to PON service signal, is carried out communication and is sent PON service signal by OLT-simulating function and optical distribution network;
Service Processing Module, is connected with described first signal processing module and secondary signal processing module respectively, for the optical transmission signal of reference format is carried out in business that circuit is processed or business under circuit processing;
Central Control Module, is connected with described first signal processing module, secondary signal processing module and Service Processing Module respectively, for controlling the operation of each module;
Described first signal processing module comprises:
The first analogue unit, is connected with described Central Control Module, has simulated light distribution network function, for being carried out communication and received PON service signal by simulated light distribution network function and optical line terminal;
The first encapsulation unit, is connected with described the first analogue unit, Service Processing Module and Central Control Module respectively, for described PON service signal being packaged into the optical transmission signal of reference format;
Described the first analogue unit comprises that the first center processing subelement, OLT information receive subelement, OLT information sends subelement, actual ONU information reception subelement and OLT and replys subelement, wherein:
OLT information receives subelement, is connected with the first center processing subelement, for receiving OLT information from OLT, and sends to the first center processing subelement;
OLT information sends subelement, is connected with the first center processing subelement, for receiving OLT information from the first center processing subelement, and sends on optical link;
Actual ONU information receives subelement, is connected with the first center processing subelement, for receive actual ONU information from optical link, and sends to the first center processing subelement;
OLT replys subelement, is connected with the first center processing subelement, for according to the instruction of the first center processing subelement, the ONU information of actual ONU information or simulation is sent to OLT;
The first center processing subelement, be used for receiving OLT information and be transmitted to OLT information and send subelement, go out to need ONU list to be processed according to OLT information analysis, to ONU, the ONU information that obtains simulation is processed in list, judge whether to receive actual ONU information, while receiving, control OLT replys subelement and sends actual ONU information, confiscate then, control OLT and reply the ONU information that subelement transmission is simulated.
4. light transmitting device as claimed in claim 3, is characterized in that, described secondary signal processing module comprises:
The second encapsulation unit, is connected with described Central Control Module and Service Processing Module respectively, for the optical transmission signal deblocking of described reference format is dressed up to PON service signal;
The second analogue unit, is connected with described the second encapsulation unit and Central Control Module respectively, has OLT-simulating function, for being carried out communication and sent PON service signal by OLT-simulating function and optical distribution network.
5. light transmitting device as claimed in claim 4, it is characterized in that, described the second analogue unit comprises that the second center processing subelement, ONU information receive subelement, ONU information sends subelement, actual OLT information reception subelement and synthetic OLT information and sends subelement, wherein:
ONU information receives subelement, is connected with the second center processing subelement, for receiving ONU information from ODN, and sends to the second center processing subelement;
ONU information sends subelement, is connected with the second center processing subelement, for receiving ONU information from the second center processing subelement, and sends on optical link;
Actual OLT information receives subelement, is connected with the second center processing subelement, for receive actual OLT information from optical link, and sends to the second center processing subelement;
The second center processing subelement, for receiving ONU information and actual OLT information, ONU information is transmitted to ONU information and sends subelement, according to ONU information, actual OLT information is processed, obtain synthetic OLT information and send to synthetic OLT information to send subelement;
Synthetic OLT information sends subelement, is connected, for receiving synthetic OLT information and send to ODN from the second center processing subelement with the second center processing subelement.
6. a passive optical network that comprises light transmitting device described in claim 1, it is characterized in that, comprise the optical line terminal, optical distribution network and the optical network unit that connect successively by circuit, described light transmitting device is arranged between optical line terminal and optical distribution network, and after being positioned at optical line terminal.
7. a passive optical network that comprises light transmitting device described in claim 2, it is characterized in that, comprise the optical line terminal, optical distribution network and the optical network unit that connect successively by circuit, described light transmitting device is arranged between optical line terminal and optical distribution network, and before being positioned at optical distribution network.
8. a passive optical network that comprises light transmitting device described in claim 3, it is characterized in that, comprise the optical line terminal, optical distribution network and the optical network unit that connect successively by circuit, described light transmitting device is arranged between optical line terminal and optical distribution network, and after laying respectively at optical line terminal and before optical distribution network.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010133651.XA CN101783980B (en) | 2010-03-15 | 2010-03-15 | Optical transmission device and passive optical network system |
| PCT/CN2011/071118 WO2011113316A1 (en) | 2010-03-15 | 2011-02-21 | Optical transmission device and passive optical network system |
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| CN201010133651.XA CN101783980B (en) | 2010-03-15 | 2010-03-15 | Optical transmission device and passive optical network system |
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| CN101783980B (en) * | 2010-03-15 | 2014-06-11 | 中兴通讯股份有限公司 | Optical transmission device and passive optical network system |
| WO2020041977A1 (en) * | 2018-08-28 | 2020-03-05 | 华为技术有限公司 | Multi-mode optical network terminal (ont) and passive optical network (pon) system |
| CN112636835A (en) * | 2020-12-16 | 2021-04-09 | 中国联合网络通信集团有限公司 | Service transmission method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101340246A (en) * | 2008-08-11 | 2009-01-07 | 武汉长光科技有限公司 | Ethernet passive optical network capable of lengthening transmission distance |
| CN101640815A (en) * | 2008-07-29 | 2010-02-03 | 华为技术有限公司 | Remote transmission method, remote transmission device and remote transmission system for PON |
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| KR100547722B1 (en) * | 2001-11-10 | 2006-02-01 | 삼성전자주식회사 | Gigabit ethernet passive optical network system and method for media access control thereof |
| CN101610437B (en) * | 2009-07-15 | 2012-11-07 | 浪潮电子信息产业股份有限公司 | Full-service access method based on optical fibers and coaxial cable |
| CN101783980B (en) * | 2010-03-15 | 2014-06-11 | 中兴通讯股份有限公司 | Optical transmission device and passive optical network system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640815A (en) * | 2008-07-29 | 2010-02-03 | 华为技术有限公司 | Remote transmission method, remote transmission device and remote transmission system for PON |
| CN101340246A (en) * | 2008-08-11 | 2009-01-07 | 武汉长光科技有限公司 | Ethernet passive optical network capable of lengthening transmission distance |
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| WO2011113316A1 (en) | 2011-09-22 |
| CN101783980A (en) | 2010-07-21 |
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