CN1863013B - Network terminal apparatus in passive light network and data processing method thereof - Google Patents
Network terminal apparatus in passive light network and data processing method thereof Download PDFInfo
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Abstract
The invention relates to the net terminal device of the passive light net and the data processing method. The invention can melt the passive light net technology with the net terminal through all kinds of the user connecting gob of the passive light net, the ONU of the passive light net technology or the user connecting gob of the ONT can be connected with the upward connecting gob of the user terminal directly, so the ONU or the upward light connecting gob of the ONT are served as the upward connecting gob of the net terminal, the high speed connecting of the net terminal and the net can be realized, at the same time, the band weight allotting game of the passive light net can be used to allot the band weight for the net terminal, and the QQS of the passive light net technology can be used. The invention can make the corresponding net terminal to gain the higher the upward and the downward bandwidth. Bandwidth allocating game of the passive light net technology can be adopted.
Description
Technical field
The present invention relates to technical field of optical network communication, relate in particular to NTU and data processing method thereof in a kind of EPON.
Background technology
In a fiber optic network, optical network unit or Optical Network Terminal are by PON (passive optical-fiber network) and local side fibre circuit unit communications, the agreement of communication can adopt the agreement based on ATM (asynchronous transfer mode), Ethernet protocol, wavelength-division multiplex technique etc., the Ethernet that needs to realize end user or group user needs in optical network unit or Optical Network Terminal inserts, phone inserts, video access or access via telephone line etc., the signal that receives from fiber optic network has specific address and transmission rate, in order in optical network unit or Optical Network Terminal, to realize user's business, just need carry out the mapping of address, conversion and data rate adaptive, tap and multiple connection.
Present network-termination device adopts Ethernet interface, xDSL (DSL), HFC (optical fiber copper uranium hybrid network), ISDN (digital Integrated Service Digital Network) as upstream Interface, and the relative Optical Fiber Transmission of the bandwidth of these interfaces is lower.
In addition, for the network terminal (as home gateway) that uses Ethernet interface, xDSL, HFC, ISDN as upstream Interface, the combination of one or more in its common use Ethernet interface, various DSL technology, the interfaces such as HFC, ISDN is as upstream Interface, and this also is an interface commonly used at present.
Adopt above-mentioned various interface to communicate at the network terminal and have following characteristics:
(1) adopt the speed of above-mentioned upstream Interface lower:
Present use Ethernet interface is as the equipment of the upstream Interface of home gateway, and speed is generally at 10Mbps, 100Mbps, and that maximum is 1000Mbps at present; And the speed of the equipment of use DSL, HFC, ISDN upstream Interface is just lower, generally can not surpass the such speed of 50Mbps. and use the PON interface to compare as the equipment of upstream Interface, and speed is too low;
(2) use the network terminal of above-mentioned interface, the service quality that can provide as home gateway etc. is lower;
The service that home gateway can provide comprises call voice, video, data access service, present home gateway provides service quality and service type owing to be subjected to the influence of existing upstream Interface, these services can not high-qualityly be provided, can only insert in data and do some business aspect this;
(3) using above-mentioned interface to make user bandwidth distribute is difficult for realizing:
Use in Ethernet interface, xDSL, HFC, the network terminal network of ISDN as upstream Interface, being not easy to form very much an efficient unified agreement between each terminal manages, basically there is not the coordination in the control between each terminal, the bandwidth of each terminal is all fixed basically, dynamically sharing of bandwidth be can't realize, the waste of certain network terminal bandwidth and the deficiency of other certain network terminal bandwidth caused;
(4) with network between distance shortly could realize being connected:
Use in Ethernet interface, xDSL, HFC, the network terminal network of ISDN as upstream Interface, the network terminal is shorter to the distance of corresponding Ethernet interface, xDSL, HFC, ISDN server, must use a plurality of service general abilities to carry out relay and realize remote transmission, in technology and maintenance, all cause huge cost expenditure like this.
Therefore, if adopt various interface described in the prior obviously can't satisfy the more and more higher communication quality requirement of people as the upstream Interface of the network terminal.
Summary of the invention
In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide NTU and data processing method thereof in a kind of EPON, thereby the superior transmission performance of EPON is extended to the network terminal, the upstream Interface that can satisfy communication requirement is provided for the network terminal.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the NTU in a kind of EPON, comprising: photoelectric conversion unit, tap Multi-connection unit, at least one Rate Adapter Unit, each Rate Adapter Unit links to each other with a Service Processing Unit;
Photoelectric conversion unit: the light signal that is used for receiving is converted to the signal of telecommunication, and sends to the tap Multi-connection unit, and the electrical signal conversion that also is used for receiving from the tap Multi-connection unit becomes light signal to send;
The tap Multi-connection unit, the signal of telecommunication that is used for photoelectric conversion unit is sent carries out dissection process, obtain loaded service data in the signal of telecommunication, and loaded service data in the signal of telecommunication are sent to corresponding Rate Adapter Unit according to the data service type of business datum; Send to photoelectric conversion unit after the business datum multiple connection that also is used for Rate Adapter Unit is sent;
Rate Adapter Unit, corresponding with the data service type, be used to receive the business datum that the tap Multi-connection unit sends, and business datum is sent to the corresponding service processing unit with particular rate, wherein every type business datum is distinguished corresponding data service queue, the business datum of collecting same type in each data service queue is arranged into a formation, and the Service Processing Unit of wait processing said data service queue is taken data away according to particular rate; The business datum that also is used for Service Processing Unit is sent sends to the tap Multi-connection unit with identical speed;
Service Processing Unit is used for the business datum that transmits with special speed receiving velocity adaptation unit, and sends to corresponding coupled user terminal; Also be used for the data service of user terminal is sent to Rate Adapter Unit with particular rate; Described photoelectric conversion unit comprises:
Optical module: from EPON, obtain light signal, and send to data simultaneous module after being converted to the signal of telecommunication; After becoming light signal, the electrical signal conversion of sending from tap Multi-connection unit or header processing unit of carrying business datum sends to the EPON;
Data simultaneous module: according to specified byte the signal that receives is carried out Synchronous Processing, and carry out the reception of data, and send to the next stage processing unit according to the Synchronous Processing result; Described data simultaneous module also is used for finishing described Synchronous Processing according to the original position of carrying out the definite reception of specified byte identification data of ranking that receives.
This device also comprises:
The header processing unit: link to each other with the tap Multi-connection unit with photoelectric conversion unit respectively, the header that is used for signal that photoelectric conversion unit is sent is analyzed, and will determine to send to the tap Multi-connection unit by the signal that the present networks terminal receives; After increasing header, the business datum that is used for that also the tap Multi-connection unit is sent sends to photoelectric conversion unit.
The present invention also provides the data processing method of NTU in a kind of EPON, comprising:
At down direction:
A, photoelectric conversion unit be from the network side receiving optical signals, and send to the tap Multi-connection unit after being converted to the signal of telecommunication;
B, the tap Multi-connection unit is received the described signal of telecommunication is resolved, obtain loaded service data in the signal of telecommunication, and signal of telecommunication loaded service data are sent to corresponding Rate Adapter Unit according to the data service type information of business datum, described Rate Adapter Unit is corresponding with the data service type, each Rate Adapter Unit links to each other with a Service Processing Unit, wherein every type business datum is distinguished corresponding data service queue, the business datum of collecting same type in each data service queue is arranged into a formation, and the Service Processing Unit of wait processing said data service queue is taken data away according to particular rate;
C, Service Processing Unit read business datum with particular rate, and send to relevant user terminals from each data service queue of Rate Adapter Unit;
At up direction:
D, Service Processing Unit send to Rate Adapter Unit with the data service of user terminal with particular rate, and by Rate Adapter Unit data service are sent to the tap Multi-connection unit with identical speed again;
E, tap Multi-connection unit receive the business datum that each Rate Adapter Unit is sent, and carry out sending to photoelectric conversion unit after multiple connection is handled;
The electrical signal conversion of carrying business datum that F, photoelectric conversion unit will receive sends in the EPON after becoming light signal; Described steps A also comprises:
The described signal of telecommunication is carried out sending to the header processing unit after the Synchronous Processing; Described Synchronous Processing comprises: finish described Synchronous Processing according to the original position of carrying out the definite reception of specified byte identification data of ranking that receives.
Described steps A also comprises:
The described signal of telecommunication is sent to the header processing unit, and determine whether the business datum that receives into the present networks terminal according to header by the header processing unit, if then business datum is sent to the tap Multi-connection unit, otherwise, described business datum is abandoned.
Described steps A also comprises:
Determine whether the business datum that receives into the present networks terminal according to number information specific in the header.
Described step B comprises:
B1, the frame head of the business data frame that receives is peeled off, obtained really complete business datum message by the EPON transmission;
B2, described business datum is joined in the corresponding data service queue of Rate Adapter Unit according to loaded information in the business datum message.
Described step B2 comprises:
Combination according to the virtual LAN VLAN number that carries in the business datum message, transmission control protocol tcp port number, IP address information or described each information joins described business datum in the corresponding data service queue.
As seen from the above technical solution provided by the invention, the present invention merges the various user interfaces (for example Ethernet interface) of user terminals such as xPON (various passive optical network technique) technology and the network terminal by EPON, with the direct implementation method that is connected with the upstream Interface of user terminal of the user interface of ONU in the xPON technology (optical network unit) or ONT (Optical Network Terminal), so just directly can use the upstream Interface of the up optical interface of ONU or ONT as the diverse network terminal, the high speed that realizes the network terminal and network is connected, use the allocated bandwidth strategy among the xPON to distribute bandwidth simultaneously, and can use the services such as QOS in the xPON technology as the network terminal.The invention provides the NTU in a kind of EPON, make the corresponding network terminal can obtain the bandwidth of higher uplink and downlink direction.Can adopt the allocated bandwidth strategy in the passive optical network technique among the present invention.
Description of drawings
Fig. 1 is the structural representation of device of the present invention.
Embodiment
Core of the present invention is for the user provides NTU in a kind of EPON as user terminal, makes the superior transmission performance of EPON can extend to user terminal always.
The present invention merges the various user interfaces (for example Ethernet interface) of user terminals such as xPON (various passive optical network technique) technology and the network terminal by EPON, thereby the user interface of ONU in the xPON technology (optical network unit) or ONT (Optical Network Terminal) directly is connected with the upstream Interface of user terminal, like this, just directly can use the upstream Interface of the up optical interface of ONU or ONT as the diverse network terminal, the high speed that realizes the network terminal and network is connected, use the allocated bandwidth strategy among the xPON to distribute bandwidth simultaneously, and can use the QOS services such as (service quality) in the xPON technology as the network terminal.
In network service, the network terminal comprises the transfer of data on the uplink and downlink both direction, on down direction, is to receive business datum from network side, and sends to user terminal, is that the business datum with user terminal sends to network side on up direction; To describe with regard to the processing procedure of the network terminal respectively below up direction and down direction business datum.
At down direction, business datum forms the packet that has particular address information from the processing of local side network process fibre circuit unit, and the process passive optical-fiber network is by the broadcasting or the descending network terminal that sends to of point-to-point mode; Pass through opto-electronic conversion in the data that the network terminal then needs to receive, header or packet content to packet are handled, by packet particular address information and the address information that leaves the present networks terminal in are compared, determine whether this packet belongs to this terminal data, if not, then simply abandon, if, then data based type of service or port type etc. are carried out tap, again the data of tap are carried out the adaptive and format conversion of port speed separately, send separately business interface or port to.
At up direction, the network terminal is with the data process format conversion and the rate adapted of each port or business interface, realize multiple connection with other data, add corresponding information header information, comprise address information, check information etc., send passive optical-fiber network to, reach the fibre circuit unit of local side.
Based on the function that above-mentioned NTU need be realized, the present invention at first provides the NTU in a kind of EPON, as shown in Figure 1, comprising:
O/E (opto-electronic conversion) unit: at down direction, convert light signal to the signal of telecommunication and send, on up direction, convert the electrical signal to light signal and send;
On down direction, comprise optical module, data simultaneous module; Optical module is to use the external interface of the network terminal of PON technology, optical module obtains light signal from the PON network, and all light signals are carried out opto-electronic conversion, change the manageable signal of telecommunication into, deliver to data simultaneous module then and carry out the synchronous of data bit, data byte or Frame, again according to exporting this data clock synchronously, as the global clock of accepting data processing;
On up direction, become light signal in optical-fiber network, to transmit header processing unit or the next electrical signal conversion of carrying business datum of tap Multi-connection unit transmission exactly;
Specifically, the optical module that described O/E unit comprises is used for obtaining light signal from EPON, and sends to data simultaneous module after being converted to the signal of telecommunication; After becoming light signal, the electrical signal conversion of sending from tap Multi-connection unit or header processing unit of carrying business datum sends to the EPON; Data simultaneous module wherein then is used for according to specified byte the signal that receives being carried out Synchronous Processing, and carries out the reception of data according to the Synchronous Processing result, and sends to the next stage processing unit, i.e. tap Multi-connection unit or header processing unit.
Header processing unit: at down direction the data frame head of receiving is resolved,, the data of receiving are increased frame head and transmission at up direction to determine whether to receive data;
At down direction, complete Frame is sent to the header processing unit by the O/E unit, the header processing unit is according to the frame head of the frame of receiving, judge whether described Frame belongs to the data of present networks terminal, if belong to the present networks terminal, then continue this Frame is sent to the next stage processing unit, otherwise this Frame abandoned or the handling process of other users oneself definition;
At up direction, be an inverse process of down direction, be about to the business datum that the tap Multi-connection unit sends and add header, and send to the O/E unit.
The tap Multi-connection unit:
At down direction, the Frame that the tap Multi-connection unit receives all is the Frame that belongs to this network terminal, the tap Multi-connection unit will further be done further processing to the data in the Frame, at first peel off the frame head of Frame, obtain pure authentic data message part by the carrying of PON technology, and discern the data service type of this data message, the Ethernet message can use VLAN (VLAN) number that comprises in the message, TCP (transmission control protocol) portal number, the combination of information such as IP address or these information is as the foundation of judging type of service, after determining the data service type of described message, described message will be delivered in the different data service queue according to the difference of established data type of service and go, described data service queue is arranged in Rate Adapter Unit, and, the corresponding data service queue of each data service type;
At up direction, the business datum that each Rate Adapter Unit of receiving is sent with the phase same rate is compiled and is carried out sending to the header processing unit after multiple connection is handled, described multiple connection processing is meant the data that receive is compiled and buffer memory, and send data to the header processing unit with suitable header on adding after obtaining from the reading command of header processing unit.
Rate Adapter Unit:
Down direction will carry out synchronously from the data of tap Multi-connection unit actual speed rate or the business clock with business datum, and the data after afterwards will be synchronously are sent to Service Processing Unit;
This be because, at down direction, data are delivered to by the tap Multi-connection unit before the rate adapted, each professional speed is different; Therefore, Rate Adapter Unit need send described data service with each professional particular rate scheduling; In fact described Rate Adapter Unit can be the corresponding data service queue of a kind of data service type, collect the business datum of same type in each data service queue, be arranged into a formation, wait pending this professional Service Processing Unit to take data away then, thereby data at a high speed are adapted to the speed of specific transactions according to particular rate;
Up direction, reception is carried out buffer memory from the data of Service Processing Unit different rates, and a kind of unified clock or data rate with system carry out synchronously, when obtaining from the instruction of the data read of tap Multi-connection unit data are sent to the tap Multi-connection unit afterwards.
Service Processing Unit: the kind of Service Processing Unit is more, and the different service types correspondence different Service Processing Units, and Service Processing Unit is finished the connection processing between network and the business device (as call processing module etc.);
At down direction, with the plain old telephone service is example, the data of coming from upper unit (rate adapted) have been the data of this specific transactions, the voice messaging and the control signaling information that wherein comprise plain old telephone, Service Processing Unit is directly given call processing module with the voice messaging of plain old telephone, change voice signal into, give telephone set by interface, control signaling information for telephone service, Service Processing Module will be handled according to certain protocol (V5), set up, keeps, hangs up user's telephone service with the control signaling information;
At up direction, receive the business datum of user terminal (being business device) from each interface, and send to Rate Adapter Unit with particular rate.
Based on said apparatus, the present invention also provides a kind of data processing method of NTU, and corresponding data handling procedure comprises down direction and two processing procedures of up direction equally.
At down direction, still with reference to shown in Figure 1, processing method of the present invention comprises:
Step 1: the optical module that photoelectric conversion unit comprises is receiving optical signals from the PON network, and all light signals are carried out opto-electronic conversion, changes the manageable signal of telecommunication into;
Why all light signals being carried out opto-electronic conversion is because the PON network is the network of a broadcast nature, the information that these signals comprise may belong to this network terminal, also may not belong to this network terminal, therefore in the time can't determining whether light signal belongs to the present networks terminal, just need all receive and carry out opto-electronic conversion and handle;
Step 2: it is unordered data bit sequence on the surface that optical module changes the signal of telecommunication of coming, and can't know the start bit and the stop bits of data, thereby also just can't receive processing; Therefore, the described signal of telecommunication need be delivered to data simultaneous module and carry out the synchronous of data bit, data byte or Frame, again according to exporting this data clock synchronously, as the global clock of accepting data processing; Described data simultaneous module can be according to the original position of carrying out the definite reception of specified byte identification data of ranking that receives;
Concrete method for synchronously recognizing is: because each byte comprises 8 bit data positions, data simultaneous module need be lined up the data bit sequence of receiving 8 kinds of possibilities so, that is to say in 8 bit data that any one all may be the start bit that receives data, may all pass through the processing of data sync to these 8 kinds, therefrom find a kind of processing wherein may draw described specified byte, so just determine that this a kind of processing is correct, also just determined to receive the start byte of data; Certainly, also can adopt other synchronous modes to realize the Synchronous Processing of Data Receiving;
At this moment, all non-ordered data positions are unordered no longer just, but may handle according to the division of oneself; After described specified byte draws, provide a clock pulse, just formed the global clock that receives data according to first of each data; Equally, according to the identification of other specific characters in the byte, just can know the beginning and the end of Frame;
Step 3: complete Frame is sent to the header processing unit by the O/E unit, the frame head of the frame that header processing unit basis is received, and carry out the reception processing of data according to the content of frame head;
Be specially: with reference to each byte loaded information content in each frame of PON agreement regulation, just can extract the customizing messages of the frame that receives, thereby determine the characteristic information of this Frame destination, and the network terminal identification information that comprises or other particular numbers, thereby judge whether described Frame belongs to the data of present networks terminal, if belong to the present networks terminal, then continue this Frame is sent to the next stage processing unit, otherwise this Frame is abandoned, perhaps adopt the flow process of other users oneself definition to handle;
Step 4: the Frame that the tap Multi-connection unit receives all is the Frame that belongs to this network terminal, the tap Multi-connection unit will further be done further processing to the data in the Frame, thereby the specified data type of service, and then determine to send it to which Rate Adapter Unit and carry out subsequent treatment;
The tap Multi-connection unit is at first peeled off the frame head of Frame, the authentic data message part that obtains by the carrying of PON technology, for example obtain complete Ethernet data message, identifying information is being placed in certain or a plurality of fixedly place that this data message has a fixing agreement to specify in data message, promptly discerns the data service type of this data message;
For example an Ethernet message can belong to telephone service, perhaps television services, perhaps general data business etc., these information of combination can use information such as the vlan number sign indicating number that comprises in the message, tcp port number, IP address or to(for) the Ethernet message is as judging professional foundation, and the foundation of judgement is specified by exploitation producer or specified according to certain protocol;
After determining the data service type of described message, described message will be delivered in the different data service queue according to the difference of established data type of service and go, described data service queue is arranged in Rate Adapter Unit, and, the corresponding data service queue of each data service type;
Step 5: Rate Adapter Unit sends described data service with each professional particular rate scheduling;
This be because, data are delivered to before the rate adapted by the tap Multi-connection unit, all be according to handling with the same speed of optical module, may be the 1.244Gbps that uses always, also may be other speed, yet each professional speed is different, for example the speed of plain old telephone service be 64Kbps, therefore, Rate Adapter Unit need be handled accordingly to the data business;
Described Rate Adapter Unit can be the corresponding data service queue of a kind of data service type, data service latency services processing unit in the formation is taken data away according to particular rate, the speed that like this, just the high-speed data of phase same rate can be adapted to specific transactions sends to the corresponding business terminal;
Step 6: Service Processing Unit is used for receiving business datum from Rate Adapter Unit with particular rate, and sends to the corresponding business terminal;
Various specific Business Processing processes such as for example plain old telephone service processing, the processing of VOIP telephone service, video data service processing, general data Business Processing; Business Processing is finished the connection processing between network element and the business device, with the plain old telephone service is example, the data of coming from upper unit (rate adapted) have been the data of this specific transactions, the voice messaging and the control signaling information that wherein comprise plain old telephone, Service Processing Unit is directly given call processing module with the voice messaging of plain old telephone, change voice signal into, give telephone set by interface, control signaling information for telephone service, Service Processing Module will be handled according to certain protocol (V5), set up with the control signaling information, keep, hang up user's telephone service.
At up direction, the processing procedure of method of the present invention is the inverse process of the processing procedure of down direction, therefore, will only do simple description below:
Step 7: Service Processing Unit receives the business datum of user terminal from each interface, and sends to Rate Adapter Unit with particular rate;
Step 8: Rate Adapter Unit sends to the tap Multi-connection unit with the business datum in each data service queue respectively with identical speed;
Step 9: send to the header processing unit after the business datum that each Rate Adapter Unit that the tap Multi-connection unit will be received is sent is compiled;
Step 10: the business datum that the header processing unit sends the tap Multi-connection unit adds header, and sends to the O/E unit;
Step 11:O/E unit is with the described business datum that adds header, and promptly the signal of telecommunication changes into light signal, and sends in the EPON.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (7)
1. the NTU in the EPON is characterized in that, comprising: photoelectric conversion unit, tap Multi-connection unit, at least one Rate Adapter Unit, and each Rate Adapter Unit links to each other with a Service Processing Unit;
Described photoelectric conversion unit, the light signal that is used for receiving is converted to the signal of telecommunication, and sends to described tap Multi-connection unit; The electrical signal conversion that also is used for receiving from described tap Multi-connection unit becomes light signal to send;
Described tap Multi-connection unit, the signal of telecommunication that is used for described photoelectric conversion unit is sent carries out dissection process, obtain loaded service data in the signal of telecommunication, and loaded service data in the described signal of telecommunication are sent to corresponding Rate Adapter Unit according to the data service type of described business datum; Send to described photoelectric conversion unit after the business datum multiple connection that also is used for described Rate Adapter Unit is sent;
Described Rate Adapter Unit, corresponding with the data service type, be used to receive the business datum that described tap Multi-connection unit sends, and described business datum is sent to the corresponding service processing unit with particular rate, wherein every type business datum is distinguished corresponding data service queue, the business datum of collecting same type in each data service queue is arranged into a formation, and the Service Processing Unit of wait processing said data service queue is taken data away according to particular rate; The business datum that also is used for Service Processing Unit is sent sends to the tap Multi-connection unit with identical speed;
Described Service Processing Unit is used for the business datum that transmits with special speed receiving velocity adaptation unit, and sends to corresponding coupled user terminal; Also be used for the data service of user terminal is sent to Rate Adapter Unit with particular rate; Described photoelectric conversion unit comprises:
Optical module: from EPON, obtain light signal, and send to data simultaneous module after being converted to the signal of telecommunication; After becoming light signal, the electrical signal conversion of sending from tap Multi-connection unit or header processing unit of carrying business datum sends to the EPON;
Data simultaneous module: according to specified byte the signal that receives is carried out Synchronous Processing, and carry out the reception of data, and send to the next stage processing unit according to the Synchronous Processing result; Described data simultaneous module also is used for finishing described Synchronous Processing according to the original position of carrying out the definite reception of specified byte identification data of ranking that receives.
2. NTU in the EPON according to claim 1 is characterized in that, this device also comprises:
The header processing unit: link to each other with the tap Multi-connection unit with photoelectric conversion unit respectively, the header that is used for signal that photoelectric conversion unit is sent is analyzed, and will determine to send to the tap Multi-connection unit by the signal that the present networks terminal receives; After increasing header, the business datum that is used for that also the tap Multi-connection unit is sent sends to photoelectric conversion unit.
3. the data processing method of NTU in the EPON is characterized in that, comprising:
At down direction:
A, photoelectric conversion unit be from the network side receiving optical signals, and send to the tap Multi-connection unit after being converted to the signal of telecommunication;
Described steps A also comprises:
The described signal of telecommunication is carried out sending to the header processing unit after the Synchronous Processing; Described Synchronous Processing comprises: finish described Synchronous Processing according to the original position of carrying out the definite reception of specified byte identification data of ranking that receives;
B, the tap Multi-connection unit is received the described signal of telecommunication is resolved, obtain loaded service data in the signal of telecommunication, and signal of telecommunication loaded service data are sent to corresponding Rate Adapter Unit according to the data service type of business datum, described Rate Adapter Unit is corresponding with the data service type, each Rate Adapter Unit links to each other with a Service Processing Unit, wherein every type business datum is distinguished corresponding data service queue, the business datum of collecting same type in each data service queue is arranged into a formation, and the Service Processing Unit of wait processing said data service queue is taken data away according to particular rate;
C, described Service Processing Unit read business datum with particular rate from Rate Adapter Unit, and send to relevant user terminals;
At up direction:
D, Service Processing Unit send to Rate Adapter Unit with the data service of user terminal with particular rate, and by Rate Adapter Unit data service are sent to the tap Multi-connection unit with identical speed again;
E, tap Multi-connection unit receive the business datum that each Rate Adapter Unit is sent, and carry out sending to photoelectric conversion unit after multiple connection is handled;
After becoming light signal, the electrical signal conversion of carrying business datum that F, photoelectric conversion unit will receive sends in the EPON.
4. the data processing method of NTU is characterized in that in the EPON according to claim 3, and described steps A also comprises:
The described signal of telecommunication is sent to the header processing unit, and determine whether the business datum that receives into the present networks terminal according to header by the header processing unit, if then business datum is sent to the tap Multi-connection unit, otherwise, described business datum is abandoned.
5. the data processing method of NTU is characterized in that in the EPON according to claim 4, and described steps A also comprises:
Determine whether the business datum that receives into the present networks terminal according to number information specific in the header.
6. the data processing method of NTU is characterized in that in the EPON according to claim 3, and described step B comprises:
B1, the frame head of the business data frame that receives is peeled off, obtained really complete business datum message by the EPON transmission;
B2, described business datum is joined in the corresponding data service queue of Rate Adapter Unit according to loaded information in the business datum message.
7. the data processing method of NTU is characterized in that in the EPON according to claim 6, and described step B2 comprises:
Combination according to the virtual LAN VLAN number that carries in the business datum message, transmission control protocol tcp port number, IP address information or described each information joins described business datum in the corresponding data service queue.
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