CN101815044A - Method for realizing Ethernet data access transmission - Google Patents
Method for realizing Ethernet data access transmission Download PDFInfo
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- CN101815044A CN101815044A CN200910078423A CN200910078423A CN101815044A CN 101815044 A CN101815044 A CN 101815044A CN 200910078423 A CN200910078423 A CN 200910078423A CN 200910078423 A CN200910078423 A CN 200910078423A CN 101815044 A CN101815044 A CN 101815044A
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Abstract
The invention discloses a method for realizing Ethernet data access transmission. The method comprises the following steps: in a downlink direction, a transmission end performs shunting and carrier-frequency modulation on an input Ethernet data service signal, forms and outputs branch signals after the branch signals are combined with other service radio frequency signals; a receiving end demodulates and reduces the received downlink input signal into an Ethernet data service signal, and outputs the signal; in an uplink direction, after the receiving end performs carrier-frequency modulation on the Ethernet data service signal inputted by a user, the receiving end outputs the signal combined with other service radio frequency signals; and the transmitting end respectively extracts the modulated data service signals from received multi-path uplink input signals for demodulating and data combining, combines the signals to a one-path data service signal, and outputs the signal. The invention also discloses another method for realizing Ethernet data access transmission. The method realizes transmission and distribution of data signals by a radio frequency combined mode, improves network utilization, reduces network construction cost, and avoids overlapping investment for respective network construction in different modes.
Description
Technical field
The present invention relates to data communication and ethernet technology field, realize that particularly Ethernet data inserts the method for transmission.
Background technology
In the existing Ethernet technology, the transmission of Ethernet data signal and distribution can only realize the processing of digital baseband signal, can't with other radio service system--as radio service signals such as GSM, CDMA--common transmitted distribution circuits, realize multi-service signal mixed transport.
So just cause different operation systems when realizing service access and transmission, will build respectively and independently transmitted distributed network, caused the situation of repeated construction, the waste of circuit utilization rate low-resource.
Summary of the invention
In view of this, the object of the present invention is to provide and realize that Ethernet data inserts the method for transmission, realize the transmission of Ethernet data signal and other radio service signal commons, access network.
For achieving the above object, the invention provides a kind of Ethernet data of realizing and insert the method for transmission, comprising: on down direction,
Transmitting terminal carries out shunt and carrier frequency modulation treatment to the Ethernet data service signal of input, and forms each tributary signal output after closing the road with other professional radiofrequency signal respectively; The descending input signal demodulation that receiving terminal will receive is reduced into the output of Ethernet data service signal;
On up direction,
After the Ethernet data service signal carrier frequency modulation of receiving terminal with user's input, close road output with other professional radiofrequency signal; Transmitting terminal extracts modulation respectively in the up input signal of the multichannel that receives data service signal is separated and is in harmonious proportion data and closes the road and handle synthetic circuit-switched data service signal output.
The present invention also provides another kind of realization Ethernet data to insert the method for transmission, comprising: on down direction,
Transmitting terminal carries out point-to-multipoint agreement control and treatment to the Ethernet data service signal of input, closes the road with other professional radiofrequency signals after the carrier frequency modulation, carries out the output of shunt back again; The descending input signal that receiving terminal will receive demodulates data-signal, restores the output of standard ethernet data service signal through the point-to-multipoint protocol processes;
On up direction,
Receiving terminal carries out the processing of point-to-multipoint control protocol to the Ethernet data service signal of input, closes road and output with other professional radiofrequency signals after the carrier frequency modulation; Transmitting terminal closes the road with the up input signal of the multichannel that receives and handles, and extracts the data service signal of modulating and carry out demodulation, goes out the output of standard ethernet data service signal through the point-to-multipoint protocol assembly.
The shunt of the present invention by placing the Ethernet data signal at standard tree l network node, close pipeline equipment or adopt the point-to-multipoint control protocol to realize of distribution and the transmission of Ethernet data signal at the tree structure network; And, realize Ethernet data signal and other radio service multiplexing transmission by the radio service signal is arrived in Ethernet data signal transformation.Ethernet data provided by the invention inserts the method for transmission, can be in existing radio frequency transmission distributed network, the mode of closing the road by radio frequency realizes the transmission and the distribution of data-signal, improves the utilance of network, reduce network construction cost, the overlapping investment of avoiding networks with different systems to build respectively.
Description of drawings
Fig. 1 realizes in the embodiments of the invention one that Ethernet data inserts the method flow diagram of transmission down direction;
Fig. 2 realizes in the embodiments of the invention one that Ethernet data inserts the method flow diagram of transmission up direction;
Fig. 3 is the method flow diagram that extracts the data service signal in the embodiments of the invention one;
Fig. 4 is the schematic diagram that extracts the data service signal in the embodiments of the invention one;
Fig. 5 realizes in the embodiments of the invention two that Ethernet data inserts the method flow diagram of transmission down direction;
Fig. 6 realizes in the embodiments of the invention two that Ethernet data inserts the method flow diagram of transmission up direction.
Embodiment
The Ethernet data signal will adapt to the transmission and the distributed architecture of standard tree l network, shunt that can be by placing the Ethernet data signal at standard tree l network node, close pipeline equipment and realize, the shunt of Ethernet data signal, close pipeline equipment and can realize by layer 2 ethernet switch; In addition, also can adopt the point-to-multipoint control protocol to realize that tree structure distributes.In addition, the embodiment of the invention is by arriving the radio service signal with Ethernet data signal transformation, realize Ethernet data signal and other radio service multiplexing transmission, be that the Ethernet data signal is modulated on certain carrier frequency and is converted to radio-frequency carrier signal, thereby close the road with other business, behind the incoming terminal node, the demodulation of modulated digital baseband signal is come out, be reduced into standard signal output.
Embodiments of the invention adopt dual mode to realize the access transmission of Ethernet data.
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Embodiment one
The transmitting terminal of standard tree l network and intermediate node are the Star Network node units of standard, and each node unit cascade forms tree network.Present embodiment is to place star-like ethernet node equipment at each node unit (comprising transmitting terminal and intermediate node), simultaneously the Ethernet data signal is carried out carrier frequency modulation formation radiofrequency signal and other service signals and close the road, realize multi-service signal mixed transport in the standard tree l network.
Fig. 1 and Fig. 2 realize in the embodiment of the invention one that Ethernet data inserts the method flow diagram of transmission, may further comprise the steps:
On down direction,
Transmitting terminal receives the Ethernet data signal by uplink service interface, and this Ethernet data signal is through forming the descending multiple branches service signal of star-like node along separate routes.Data service can be realized along separate routes the shunt of 1:n (the multiple branch of adaptable standard tree network, close road than) by layer 2 ethernet switch.The transmitting terminal uplink service interface is the standard ethernet interface that transmitting terminal externally provides, transmission uplink and downlink standard ethernet data-signal.
Modulation forms the multi-channel rf signal to each branch's service signal through carrier frequency respectively.
Radiofrequency signal after the modulation is closed behind the road line output down with other professional radiofrequency signals respectively, be output as the multichannel mixed service signal that closes after handle on the road.
Intermediate node extracts the data CF signal of modulation by the down mixing service signal of uplink service interface access transmitting terminal or the input of higher level's intermediate node through coupling filtering.
To be reduced to the standard ethernet data-signal after this data CF signal demodulation, this data-signal is become multichannel downlink data branch signal after data service along separate routes.Wherein data service can be realized along separate routes the shunt of 1:n (the multiple branch of adaptable standard tree network, close road than) by layer 2 ethernet switch.
Each road downlink data branch signal is formed radiofrequency signal through carrier frequency modulation back respectively, close the road with other professional radiofrequency signals after formation mixed service signal export to the downlink business interface.
The descending input signal demodulation that step 103, receiving terminal will receive is reduced into the output of data service signal, and this signal may be received from transmitting terminal or intermediate node.This step is carried out at receiving terminal, specifically comprises:
The uplink service interface of receiving terminal is imported the mixed service signal, extracts the data CF signal of modulation through coupling filtering.
Through demodulation the data CF signal is reduced into the standard ethernet data-signal, the descending access of Ethernet data is provided to the end user by user traffic interfaces.
On up direction,
After step 201, the data service signal modulation of receiving terminal, form the output of uplink service signal with user's input.This receiving terminal is actually the transmitting terminal of upward signal, why is referred to as receiving terminal, is for unified mutually with the down direction flow process of Fig. 1, represents that the two is same equipment.This step specifically comprises:
Receiving terminal receives the up Ethernet data signal that the user sends by user traffic interfaces.
This data-signal is formed radiofrequency signal through the carrier frequency modulation, close road formation mixed service signal with other professional radiofrequency signals and export by uplink service interface.This mixed service signal sends to intermediate node or directly sends to transmitting terminal.
The downlink business interface of intermediate node receives the up mixed service signal of multichannel, respectively to its Filtering Processing that is coupled, extracts the data CF signal of multichannel modulation.
Respectively the multichannel data CF signal is carried out being reduced into multichannel standard ethernet data-signal after the demodulation, these multiple signals after the road is closed in data service, are formed capable on the way Ethernet data signal, form one tunnel radiofrequency signal through the carrier frequency modulation.The road of closing that the road can be realized n:1 (the multiple branch of adaptable standard tree network, close road than) by layer 2 ethernet switch is closed in this data service.
This one tunnel radiofrequency signal and other professional upward signals are closed road formation mixed service signal, by the uplink service interface output of intermediate node.
The downlink business interface of transmitting terminal receives the up mixed service signal of multichannel, respectively it is carried out signal coupling Filtering Processing, extracts the data service signal of multichannel carrier frequency modulation.
With each circuit-switched data service signal respectively demodulation be reduced into the standard ethernet data-signal, close and form one road Ethernet data signal behind the road and export through uplink service interface.The road of closing that the road can be realized n:1 (the multiple branch of adaptable standard tree network, close road than) by layer 2 ethernet switch is closed in this data service.
In above flow process, need in the mixed service signal, extract the data service signal, be the availability of frequency spectrum in the raising system, each circuit-switched data modulation signal of input and output needs shared same carrier frequency frequency in intermediate node, to realize that this method flow comprises as shown in Figure 3 with frequently multiplexing:
The data carrier frequency modulation signal of another road output in band stop filter filtering mixed signal of step 304, coupler.
Above flow process is to extract the data service signal in downstream signal, the operation of extracting in upward signal similarly, what just carry out on up direction is to close dataway operation, the data CF signal of the modulation that a plurality of coupling filtering need be extracted is carried out demodulation and He Lu earlier, again another road of a plurality of couplers is exported the data CF signal of filtering modulation respectively, and close the road equally, at last this two-way is closed the road signal and close the road, thereby form output signal.
Fig. 4 is the realization schematic diagram of this method, be coupled out one tunnel mixed signal for the data processing division divisional processing by coupler, data modulated signal in the mixed signal of the straight-through end output of coupler no longer needs, for realizing the multiplexing of data-modulated frequency, need by band stop filter filtering data modulated signal; The mixed signal that is coupled out extracts data modulated signal through band pass filter, is reduced to data-signal through demodulation, through data along separate routes/close the road section processes, forms new data-signal, be modulated into radiofrequency signal and other service signals through carrier frequency again and close the road and export.This implementation method principle is simple, realizes that cost is lower, and in the data carrier frequency modulation transmissions process in whole tree network, owing to adopt channeling, only needs a carrier frequency frequency to finish, and has saved frequency spectrum resource.
Embodiment two
Present embodiment is realized the distribution and the access of tree network by the point-to-multipoint control protocol, can realize network intermediate node transparent transmission (need not intermediate node and increase the data service signal handling equipment), promptly only need place Ethernet data point-to-multipoint agreement control and treatment equipment at the transmitting terminal and the receiving terminal of standard tree l network, intermediate node need not to do the Ethernet data Signal Processing.
The core content of point-to-multipoint control protocol is how to pass through time division multiplexing mode, guarantees normally uplink transmission data of each receiving terminal, does not clash, or after clashing, by the influence that certain means manage conflict, guarantees normal transfer of data.
Be example with the ALOHA agreement below, the working method of point-to-multipoint control protocol be described:
Descending employing broadcast mode, each terminal determines whether to be this end message, selective reception by the address information in the downlink broadcast frame.Up employing is as long as the user has data to send, although just allow them send.Certainly, thus can produce like this conflict cause frame destruction.By the feedback of downlink broadcast channel, transmit leg can carry out collision detection in sending the process of data, and the data that receive and the data of buffering area are compared, and just can know whether Frame is destroyed.Same reason, other users also are according to this process work.If transmit leg is known Frame and suffers to destroy (promptly detecting conflict) that it can wait for one section with retransmitting this frame after captain's time so.
Above-mentioned agreement realizes simple, but as easy as rolling off a log generation conflict, channel utilization is low.Improve channel utilization and can adopt time slot A LOHA agreement, its core is to unify user's data with clock to send.Way is that the time is divided into discrete timeslice, and the user must wait until that at every turn next timeslice could begin to send data, thereby has avoided the user to send the randomness of data, has reduced data and has produced the possibility of conflict, has improved the utilance of channel.
Fig. 5 and Fig. 6 adopt the point-to-multipoint control protocol to realize that Ethernet data inserts the method flow diagram of transmission, may further comprise the steps in the embodiment of the invention two:
On down direction,
The data service signal of step 501, transmitting terminal input carries out the carrier frequency modulation after point-to-multipoint agreement control and treatment, and closes the road with other business, carries out the shunt back again to intermediate node or receiving terminal output.This step specifically comprises:
Control transmission by the downlink Ethernet data-signal that the uplink service interface of transmitting terminal is imported by the requirement of point-to-multipoint host-host protocol, form the Data Base band signal.
This Data Base band signal is formed radiofrequency signal through the carrier frequency modulation, and close road formation mixed service signal, after the 1:n shunt, export by the downlink business interface with other professional radiofrequency signals.
This downstream signal transparent transmission is broadcast to each receiving terminal through intermediate node.
The mixed service signal of the uplink service interface input by receiving terminal extracts the data carrier frequency service signal of modulation through coupling filtering.
Data carrier frequency service signal to this modulation carries out demodulation, and it is reduced to the Data Base band signal.
Restore the output of standard ethernet data-signal by point-to-multipoint protocol transmission control receiving unit.
On up direction,
The up Ethernet data signal that the user traffic interfaces of receiving terminal receives after point-to-multipoint agreement control and treatment, forms the Data Base band signal.
Be modulated into radiofrequency signal through carrier frequency, close the road, form the mixed service signal and export by uplink service interface with other professional radiofrequency signals.
The mixed service signal that step 602, intermediate node or receiving terminal are uploaded forms line output on the Data Base band signal through separating mediation point-to-multipoint protocol processes.This step specifically comprises:
The up mixed service signal that each receiving terminal sends converges through intermediate node is up, by the downlink business interface input of transmitting terminal.
The multichannel mixed service signal of input, the ECDC road forms one tunnel mixed service signal, extracts the data carrier frequency service signal of modulation through coupling, filtering.
The data carrier frequency service signal of modulation is reduced to the Data Base band signal through demodulation, and this Data Base band signal restores the standard ethernet data-signal by point-to-multipoint host-host protocol reception control section and exports uplink service interface to.
Data provided by the invention and distribution mode, can be in existing radio frequency transmission distributed network, the mode of closing the road by radio frequency realizes the transmission and the distribution of data-signal, improves the utilance of network, reduce network construction cost, the overlapping investment of avoiding networks with different systems to build respectively.
What existing data distributed network adopted is time-division digital data transmission mode, and the radio frequency transmission distributed network adopts the simulation frequency-division multiplex transmission system, and both can not simply merge multiplexing.Data-signal is carried out rf modulations form radiofrequency signal, then can realize the mixed transport of data-signal and radiofrequency signal, close/the derived channel equipment processing mode by point-to-multipoint delivery protocol mode or node, can realize that the distribution of data-signal in radio frequency network inserts.
Claims (10)
1. realize that Ethernet data inserts the method for transmission for one kind, it is characterized in that, comprising: on down direction,
Transmitting terminal carries out shunt and carrier frequency modulation treatment to the Ethernet data service signal of input, and forms each tributary signal output after closing the road with other professional radiofrequency signal respectively; The descending input signal demodulation that receiving terminal will receive is reduced into the output of Ethernet data service signal;
On up direction,
After the Ethernet data service signal carrier frequency modulation of receiving terminal with user's input, close road output with other professional radiofrequency signal; Transmitting terminal extracts modulation respectively in the up input signal of the multichannel that receives data service signal is separated and is in harmonious proportion data and closes the road and handle synthetic circuit-switched data service signal output.
2. method according to claim 1 is characterized in that, this method further comprises on down direction:
Intermediate node extracts the data service signal and separates and be in harmonious proportion data and handle along separate routes in the descending input signal that receives, form each tributary signal and modulate respectively, closes road and output with other professional radiofrequency signal.
3. method according to claim 2 is characterized in that, described extraction data service signal is separated and is in harmonious proportion data and handles specifically along separate routes and comprise:
Intermediate node is coupled out one road signal with the mixed service signal of input through coupler, leaches the data CF signal of modulation by band pass filter;
The data CF signal of modulation is reduced to standard ethernet data service signal through demodulation;
Ethernet data service signal after the demodulation is carried out shunt.
4. method according to claim 3 is characterized in that, described each tributary signal is modulated respectively and is closed road output with other professional radiofrequency signal specifically comprise:
Ethernet data service signal after the described shunt is formed the multichannel data CF signal through the carrier frequency modulation with frequency respectively;
The data CF signal of modulating is exported on another road of described coupler in band stop filter filtering mixed service signal;
Multichannel mixed service signal after the described filtering processing is closed the road respectively with the multichannel data CF signal of modulating at same frequency again, form the output of multichannel mixed service signal.
5. method according to claim 1 is characterized in that, this method further comprises on up direction:
Intermediate node extracts the data service signal respectively and separates and be in harmonious proportion data and close the road and handle in the up input signal of the multichannel that receives, with close rood to road signal modulate the back and close road and output with other professional radiofrequency signal.
6. method according to claim 5 is characterized in that, described extraction data service signal is separated and is in harmonious proportion data and closes the road and handle and specifically comprise:
Intermediate node is coupled out one road signal through coupler respectively with the multichannel mixed service signal of input, leaches the data CF signal of modulation by band pass filter;
The data CF signal of multichannel modulation is reduced to standard ethernet data service signal through demodulation;
Multichannel Ethernet data service signal after the demodulation is closed the road.
7. method according to claim 5 is characterized in that, described with one road signal modulate the back with other professional radiofrequency signal close the road and output specifically comprise:
The described Ethernet data service signal that closes behind the road is formed a circuit-switched data CF signal through the carrier frequency modulation with frequency;
The data CF signal of modulating is respectively exported on another road of described a plurality of couplers in band stop filter filtering mixed service signal, and the multichannel mixed service signal after the filtering processing is closed the road;
A described mixed service signal and a described circuit-switched data CF signal of closing behind the road closed road and output.
8. according to any described method in the claim 1 to 7, it is characterized in that the described road of closing is realized by layer 2 ethernet switch with shunt.
9. realize that Ethernet data inserts the method for transmission for one kind, it is characterized in that, comprising: on down direction,
Transmitting terminal carries out point-to-multipoint agreement control and treatment to the Ethernet data service signal of input, closes the road with other professional radiofrequency signals after the carrier frequency modulation, carries out the output of shunt back again; The descending input signal that receiving terminal will receive demodulates data-signal, restores the output of standard ethernet data service signal through the point-to-multipoint protocol processes;
On up direction,
Receiving terminal carries out the processing of point-to-multipoint control protocol to the Ethernet data service signal of input, closes road and output with other professional radiofrequency signals after the carrier frequency modulation; Transmitting terminal closes the road with the up input signal of the multichannel that receives and handles, and extracts the data service signal of modulating and carry out demodulation, goes out the output of standard ethernet data service signal through the point-to-multipoint protocol assembly.
10. method according to claim 9 is characterized in that, this method further comprises:
On down direction, the descending input signal that intermediate node will receive back output along separate routes;
On up direction, after closing the road, exports the up input signal that intermediate node will receive.
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| CN200910078423A CN101815044A (en) | 2009-02-20 | 2009-02-20 | Method for realizing Ethernet data access transmission |
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| CN200910078423A CN101815044A (en) | 2009-02-20 | 2009-02-20 | Method for realizing Ethernet data access transmission |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217412A (en) * | 2010-11-01 | 2011-10-12 | 华为技术有限公司 | Method and apparatus for transmitting cpri signals via coaxial cable |
| CN102448052A (en) * | 2011-12-06 | 2012-05-09 | 京信通信系统（中国）有限公司 | Multi-service mixed signal transmission method, device and system |
| CN102497233A (en) * | 2011-12-23 | 2012-06-13 | 武汉虹信通信技术有限责任公司 | Method for transmitting Ethernet signal by utilizing digital optical fiber repeater |
| CN104040905A (en) * | 2011-09-16 | 2014-09-10 | 阿尔卡特朗讯 | Method and apparatus for exchanging data signals over a plurality of domains in home network |
| WO2015184947A1 (en) * | 2014-11-19 | 2015-12-10 | 中兴通讯股份有限公司 | Device and method for implementing combination and splitting of carrier frequency signals |
-
2009
- 2009-02-20 CN CN200910078423A patent/CN101815044A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217412A (en) * | 2010-11-01 | 2011-10-12 | 华为技术有限公司 | Method and apparatus for transmitting cpri signals via coaxial cable |
| CN102217412B (en) * | 2010-11-01 | 2014-08-13 | 华为技术有限公司 | Method and apparatus for transmitting cpri signals via coaxial cable |
| US8923759B2 (en) | 2010-11-01 | 2014-12-30 | Huawei Technologies Co., Ltd. | Method and apparatus for transmitting CPRI signal by means of coaxial line |
| CN104040905A (en) * | 2011-09-16 | 2014-09-10 | 阿尔卡特朗讯 | Method and apparatus for exchanging data signals over a plurality of domains in home network |
| CN102448052A (en) * | 2011-12-06 | 2012-05-09 | 京信通信系统（中国）有限公司 | Multi-service mixed signal transmission method, device and system |
| CN102497233A (en) * | 2011-12-23 | 2012-06-13 | 武汉虹信通信技术有限责任公司 | Method for transmitting Ethernet signal by utilizing digital optical fiber repeater |
| CN102497233B (en) * | 2011-12-23 | 2016-01-20 | 武汉虹信通信技术有限责任公司 | Digital optical fiber direct station is utilized to transmit the method for ethernet signal |
| WO2015184947A1 (en) * | 2014-11-19 | 2015-12-10 | 中兴通讯股份有限公司 | Device and method for implementing combination and splitting of carrier frequency signals |
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Application publication date: 20100825 |