CN101447948A - Data transmission method and Ethernet terminal - Google Patents
Data transmission method and Ethernet terminal Download PDFInfo
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- CN101447948A CN101447948A CNA200810247370XA CN200810247370A CN101447948A CN 101447948 A CN101447948 A CN 101447948A CN A200810247370X A CNA200810247370X A CN A200810247370XA CN 200810247370 A CN200810247370 A CN 200810247370A CN 101447948 A CN101447948 A CN 101447948A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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Abstract
The invention discloses a data transmission method. The method comprises the following steps: data which is coaxially transmitted is received to perform the analog-to-digital conversion process, and the data processed through analog-to-digital conversion is sent to the media access control MAC layer of an Ethernet terminal to be processed after being processed through coaxial decoding; the data from the MAC layer is received to be processed through coaxial decoding, and the data processed through coaxial decoding is sent to a coaxial line to be transmitted after being processed through analog-to-digital conversion. The invention also discloses an Ethernet terminal. The technical proposal can ensure that the Ethernet terminal can extract Ethernet wideband data from the coaxial line.
Description
Technical field
The present invention relates to the ethernet technology field, refer to a kind of data transmission method and a kind of ethernet terminal especially.
Background technology
Very-high-bit-rate digital subscriber loop (VDSL, Very-high-bit-rate Digital Subscriber loop) broadband such as technology and Long Range Ethernet (LRE, Long Range Ethernet) technology is linked into the family technology and can uses twisted pair telephone to be linked into the family.But VDSL and LRE are when carrying out the high-speed wideband access service by twisted-pair feeder, because some inherent defects of interphone spider lines, the technology barrier of the user's interphone spider lines that runs into is very big, high-speed wideband (100Mbps) can arrive the user doorway often, but does not advance the telephone wire access point in each room.
The present inventor has proposed to utilize the indoor cable TV coaxial line resource of user to be accomplished to the technical scheme of the broadband data transmission of the indoor diverse access point of user for this reason, be specially: the high-speed wideband data that transfer to the user doorway by twisted-pair feeder transfer to the indoor coaxial line network of user by relay, are accomplished to the broadband data transmission of the indoor diverse access point of user by indoor coaxial line network.
Fig. 1 is the composition structural representation that the twisted-pair feeder wideband data is relayed to the relay of coaxial line.As shown in Figure 1, this relay mainly comprises twisted pair media PHY (physical layer) module and coaxial line medium PHY module.
Wherein, twisted pair media PHY physical layer block is used to receive the data that twisted-pair feeder transmits, and carries out carrying out the twisted-pair feeder decoding processing after the analog-to-digital conversion process, then data is sent to coaxial line medium PHY module; Reception is carried out the laggard line number mould of twisted-pair feeder encoding process conversion process from the data of coaxial line medium PHY module, then data is transmitted by twisted-pair feeder;
Coaxial line medium PHY module is used to receive the data from twisted pair media PHY module, carries out the laggard line number mould of coaxial line encoding process conversion process, then data is transmitted by coaxial line; Receive the data of coaxial line transmission, carry out carrying out the coaxial line decoding processing after the analog-to-digital conversion process, then data are sent to twisted pair media PHY module.
In Fig. 1, finish digital-to-analogue and analog-to-digital conversion process in the twisted pair media PHY module by the twisted-pair feeder AD conversion unit, finish the twisted-pair feeder Code And Decode by the twisted-pair feeder codec unit and handle; Finish digital-to-analogue and analog-to-digital conversion process in the coaxial line medium PHY module by the coaxial line AD conversion unit, finish the coaxial line Code And Decode by the coaxial line codec unit and handle.In addition, twisted pair media PHY module can also comprise a twisted-pair feeder gain unit, is used for the signal that is sent to twisted-pair feeder is carried out processing and amplifying, with the decay of compensation twisted-pair feeder transmission; Coaxial line medium PHY module can also comprise a coaxial line gain unit, is used for the signal that is sent to coaxial line is carried out processing and amplifying, with the decay of compensating coaxial line transmission.
In Fig. 1, the twisted pair media interface unit is used to connect twisted-pair feeder, and finish send data to twisted-pair feeder with the work that receive data; Equally, coaxial line Media Interface Connector unit is used to connect coaxial line, and finish send data to coaxial line with the work that receive data; MII (Media Independent Interface) unit is the standard interface unit in the PHY module.
Such scheme as shown in Figure 1 can be relayed to each indoor coaxial access point by the indoor coaxial network of user with the ethernet physical layer signal of full duplex, these access points can be bi-directional set-top boxes, or the ethernet terminals such as panel TV of built-in bi-directional set-top box.So just relate to how these ethernet terminals extract Ethernet wideband data from coaxial line problem.
Present indoor coaxial two-direction access technology all is based on modulation technique, as Docsis technology, Homeplug technology etc.The common feature of these technology is based on the notion that far-end inserts, several one hundred houses can be inserted in interior a lot of terminals in a termination, on technology realizes, a lot of difficult points are arranged, as the influx noise problem, the technical complexity that Line Attenuation big (70dB), modulation technique are brought etc.Capturing of these technological difficulties can the remarkable realization cost that increases terminal.Therefore, need a kind of new method to make ethernet terminal that Ethernet wideband data is extracted from coaxial line.
Summary of the invention
The invention provides a kind of data transmission method, this method makes ethernet terminal to extract Ethernet wideband data from coaxial line.
The present invention also provides a kind of ethernet terminal, and this ethernet terminal can extract Ethernet wideband data from coaxial line.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
The invention discloses a kind of data transmission method, when the Ethernet wideband data relaying that this method is applied to utilize twisted-pair feeder to be linked into the family is forwarded to the indoor coaxial line of user, the data transmission procedure between ethernet terminal and the coaxial line, this method comprises:
The data that receive the coaxial line transmission are carried out analog-to-digital conversion process, described data through analog-to-digital conversion process are carried out the coaxial line decoding processing after, the media interviews control MAC layer that is sent to described ethernet terminal is handled;
Reception is carried out the coaxial line encoding process from the data of MAC layer, described data through the coaxial line encoding process are carried out digital-to-analogue conversion after, be sent to coaxial line and transmit.
The invention also discloses a kind of ethernet terminal, this ethernet terminal comprises: coaxial line medium PHY module, the data that are used to receive the coaxial line transmission are carried out analog-to-digital conversion process, described data through analog-to-digital conversion process are carried out the coaxial line decoding processing after, be sent to the MAC module and handle; The data that are used to receive from the MAC module are carried out the coaxial line encoding process, described data through the coaxial line encoding process are carried out digital-to-analogue conversion after, be sent to coaxial line and transmit.
As seen from the above technical solution, the data of this reception coaxial line of the present invention transmission are carried out analog-to-digital conversion process, described data through analog-to-digital conversion process are carried out the coaxial line decoding processing after, the media interviews control MAC layer that is sent to described ethernet terminal is handled; Reception is carried out the coaxial line encoding process from the data of MAC layer, after described data through the coaxial line encoding process are carried out digital-to-analogue conversion, be sent to coaxial line and carry out technical scheme of transmission, make that user's ethernet terminal can extract Ethernet wideband data from coaxial line when the Ethernet wideband data relaying that utilizes twisted-pair feeder to be linked into the family is forwarded to the indoor coaxial line of user.
Description of drawings
Fig. 1 is the composition structural representation that the twisted-pair feeder wideband data is relayed to the relay of coaxial line;
Fig. 2 is the flow chart of a kind of data transmission method of the embodiment of the invention;
Fig. 3 is the composition structured flowchart of a kind of ethernet terminal of the embodiment of the invention.
Embodiment
Core concept of the present invention is: be forwarded under the application scenarios of the indoor coaxial line of user at the Ethernet wideband data relaying that utilizes twisted-pair feeder to be linked into the family, physical layer at ethernet terminal, the corresponding processing of processing (being the processing of the coaxial line medium PHY module among Fig. 1) of the other end of execution and coaxial line, thus make ethernet terminal can extract the Ethernet wideband data in the coaxial line.
Fig. 2 is the flow chart of a kind of data transmission method of the embodiment of the invention.When the Ethernet wideband data relaying that this method is applied to utilize twisted-pair feeder to be linked into the family is forwarded to the indoor coaxial line of user, the data transmission procedure between ethernet terminal and the coaxial line, as shown in Figure 2, this method comprises:
Step 201, the data that receive the coaxial line transmission are carried out analog-to-digital conversion process, described data through analog-to-digital conversion process are carried out the coaxial line decoding processing after, the media interviews control MAC layer that is sent to described ethernet terminal is handled;
Step 202 receives and to carry out the coaxial line encoding process from the data of MAC layer, described data through the coaxial line encoding process are carried out digital-to-analogue conversion after, be sent to coaxial line and transmit.
In method shown in Figure 2, coaxial line decoding processing in the described step 201 is corresponding with coaxial encoding process and coaxial line decoding processing by the execution of coaxial line coding module among Fig. 1 respectively with the coaxial line encoding process in the step 202, be that the coaxial line encoding process that coaxial decoding processing in the step 201 and the coaxial line coding/decoding module among Fig. 1 are carried out is reciprocal process, coaxial line encoding process and the coaxial line decoding processing among Fig. 1 in the step 201 are reciprocal processes.
In method shown in Figure 2, described data after the conversion of the laggard line number mould of coaxial line encoding process are sent to coaxial line further carry out the signal processing and amplifying before transmitting.The performed signal processing and amplifying of the signal processing and amplifying here and the coaxial line gain unit among Fig. 1 is consistent (being that gain factor is identical), like this, can avoid both sides because signal level sends and receives different and the problem that can't proper communication of threshold.
In method shown in Figure 2, data are carried out described coaxial line encoding process after, further carry out physical layer encodes and handle, and then carry out being sent to coaxial line after the described digital-to-analogue conversion and transmit; Wherein, described physical layer encodes is handled and is made the signal spectrum of the described data of transmitting on coaxial line avoid the frequency spectrum of cable TV signal.
This is owing to have only baseband data signals on the twisted-pair feeder in transmission, baseband data signals can be used all the usable spectrum resources on the twisted-pair feeder, and cable TV signal is arranged on the indoor coaxial line in transmission, baseband data signals and cable TV signal are shared the frequency spectrum resource that uses coaxial line, so the employed frequency spectrum of the broadband data transmission of coaxial line will be avoided the frequency spectrum resource of cable TV signal.Adopt which kind of physical layer encodes mode as for wideband data, be not discussed here with the frequency spectrum of avoiding cable TV signal, those skilled in the art can find one or more suitable coded systems according to existing coding techniques.
And, the physical layer encodes at ethernet terminal place also will and twisted-pair feeder and coaxial line between relay physical layer encodes that the data that are sent to coaxial line are carried out be consistent, make the frequency spectrum of the data in coaxial line, transmitted within 5～65MHz, to avoid the frequency spectrum of cable TV signal.
In addition, because the Ethernet data that is relayed to the ethernet terminal on-position is ethernet standard speed (as 10 or 100 mbps) not necessarily, possible criteria of right and wrong speed (as 33Mbps or 50Mbps), and the Ethernet interface speed of all ethernet terminals all is standard speed at present.Therefore, in one embodiment of the present of invention, the data after the described coaxial line decoding processing are sent to before the MAC layer, further carry out data rate transition and handle, to make it the rate-matched with the MAC layer interface; Equally, will carry out before the coaxial line encoding process, and further carry out data rate transition and handle, be complementary with the speed of physical layer making it from the data of MAC layer.
Above-mentioned scheme shown in Figure 2 makes ethernet terminal to extract Ethernet wideband data from coaxial line.
Fig. 3 is the composition structured flowchart of a kind of ethernet terminal of the embodiment of the invention.As shown in Figure 3, this ethernet terminal comprises: MAC and coaxial line medium PHY module, wherein,
The MAC module is used to finish the MAC layer and handles;
Coaxial line medium PHY module, the data that are used to receive the coaxial line transmission are carried out analog-to-digital conversion process, described data through analog-to-digital conversion process are carried out the coaxial line decoding processing after, be sent to the MAC module and handle; The data that are used to receive from the MAC module are carried out the coaxial line encoding process, described data through the coaxial line encoding process are carried out digital-to-analogue conversion after, be sent to coaxial line and transmit.
In Fig. 3, described coaxial line medium PHY module comprises: coaxial line Media Interface Connector unit, coaxial line AD conversion unit and coaxial line codec unit; Wherein,
Described coaxial line Media Interface Connector unit is used to receive the data of coaxial line transmission and be sent to the coaxial line AD conversion unit, receives the data of coaxial line AD conversion unit transmission and is sent to the coaxial line transmission;
Described coaxial line AD conversion unit, be used to receive the data that coaxial line Media Interface Connector unit sends, carry out being sent to the coaxial line codec unit after the analog-to-digital conversion process, the data that receive the transmission of coaxial line codec unit carry out being sent to coaxial line Media Interface Connector unit after digital-to-analogue conversion is handled;
Described coaxial line codec unit is used to receive the data that the coaxial line AD conversion unit sends and carries out being sent to the MAC module after the coaxial line decoding processing; The data that receive the transmission of MAC module carry out being sent to the coaxial line AD conversion unit after the coaxial line encoding process.
In Fig. 3, described coaxial line medium PHY module further comprises: the coaxial line gain unit, be used to receive data from coaxial AD conversion unit, and carry out being sent to coaxial line Media Interface Connector unit after the signal processing and amplifying.
In Fig. 3, described coaxial line medium PHY module further comprises: physical layer encodes unit (not drawing among Fig. 3), be used for receiving from coaxial line codec unit transmission data, carry out being sent to the coaxial line AD conversion unit after the physical layer encodes reprocessing; Wherein, described physical layer encodes is handled and is made the signal spectrum of the described data of transmitting on coaxial line avoid the frequency spectrum of cable TV signal.
In Fig. 3, described coaxial line medium PHY module also comprises MII (Media Independent Interface) unit, draws among Fig. 3, and coaxial line medium PHY module and MAC module are logical by the MII interface.
Ethernet terminal as shown in Figure 3 also comprises: the rate-matched module is used for the rate transition from the data of coaxial line PHY module is become the speed that is complementary with MAC module interface speed, and the data after this rate transition is sent to the MAC module; The speed that is used for becoming the interface rate with coaxial line medium PHY module to be complementary from the rate transition of the data of MAC module, and the data after this rate transition are sent to coaxial line medium PHY module.
In Fig. 3, described rate-matched module can be the dual-port buffer storage, and the read-write of this memory one side is with reference to the non-standard rate clock, the read-write normative reference speed clock of opposite side.
The speed that coaxial dielectric PHY module is supported in Fig. 3 is consistent with the coaxial dielectric PHY module institute supporting rate in the relay shown in Figure 1, and described speed comprises standard ethernet speed and two kinds of situations of non-standard Ethernet speed.
Ethernet terminal shown in Figure 3 can be the panel TV of set-top box or built-in set-top box.The solution of the present invention can realize in the panel TV of set-top box or built-in set-top box that the low cost of indoor high-speed Ethernet coaxial termination inserts, and the market potential benefit is very big.
In sum, the data of this reception coaxial line of the present invention transmission are carried out analog-to-digital conversion process, described data through analog-to-digital conversion process are carried out the coaxial line decoding processing after, the media interviews control MAC layer that is sent to described ethernet terminal is handled; Reception is carried out the coaxial line encoding process from the data of MAC layer, after described data through the coaxial line encoding process are carried out digital-to-analogue conversion, be sent to coaxial line and carry out technical scheme of transmission, make that user's ethernet terminal can extract Ethernet wideband data from coaxial line when the Ethernet wideband data relaying that utilizes twisted-pair feeder to be linked into the family is forwarded to the indoor coaxial line of user.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of data transmission method is characterized in that, when the Ethernet wideband data relaying that this method is applied to utilize twisted-pair feeder to be linked into the family is forwarded to the indoor coaxial line of user, and the data transmission procedure between ethernet terminal and the coaxial line, this method comprises:
The data that receive the coaxial line transmission are carried out analog-to-digital conversion process, described data through analog-to-digital conversion process are carried out the coaxial line decoding processing after, the media interviews control MAC layer that is sent to described ethernet terminal is handled;
Reception is carried out the coaxial line encoding process from the data of MAC layer, described data through the coaxial line encoding process are carried out digital-to-analogue conversion after, be sent to coaxial line and transmit.
2, the method for claim 1 is characterized in that,
Described coaxial line decoding processing is corresponding with coaxial encoding process and coaxial line decoding processing in the relaying repeating process respectively with the coaxial line encoding process.
3, the method for claim 1 is characterized in that, this method further comprises:
Described data after the conversion of the laggard line number mould of coaxial line encoding process are sent to coaxial line further carry out the signal processing and amplifying before transmitting.
4, the method for claim 1 is characterized in that, this method further comprises:
After data are carried out described coaxial line encoding process, further carry out physical layer encodes and handle, and then carry out being sent to coaxial line after the described digital-to-analogue conversion and transmit;
Wherein, described physical layer encodes is handled and is made the signal spectrum of the described data of transmitting on coaxial line avoid the frequency spectrum of cable TV signal.
5, as each described method in the claim 1 to 4, it is characterized in that this method further comprises:
Data after the described coaxial line decoding processing are sent to before the MAC layer, further carry out data rate transition and handle;
To carry out before the coaxial line encoding process from the data of MAC layer, and further carry out data rate transition and handle.
6, a kind of ethernet terminal, it is characterized in that this ethernet terminal comprises: coaxial line medium PHY module, the data that are used to receive the coaxial line transmission are carried out analog-to-digital conversion process, after described data through analog-to-digital conversion process are carried out the coaxial line decoding processing, be sent to the MAC module and handle; The data that are used to receive from the MAC module are carried out the coaxial line encoding process, described data through the coaxial line encoding process are carried out digital-to-analogue conversion after, be sent to coaxial line and transmit.
7, ethernet terminal as claimed in claim 6 is characterized in that, described coaxial line medium PHY module comprises: coaxial line Media Interface Connector unit, coaxial line AD conversion unit and coaxial line codec unit; Wherein,
Described coaxial line Media Interface Connector unit is used to receive the data of coaxial line transmission and be sent to the coaxial line AD conversion unit, receives the data of coaxial line AD conversion unit transmission and is sent to the coaxial line transmission;
Described coaxial line AD conversion unit, be used to receive the data that coaxial line Media Interface Connector unit sends, carry out being sent to the coaxial line codec unit after the analog-to-digital conversion process, the data that receive the transmission of coaxial line codec unit carry out being sent to coaxial line Media Interface Connector unit after digital-to-analogue conversion is handled;
Described coaxial line codec unit is used to receive the data that the coaxial line AD conversion unit sends and carries out being sent to the MAC module after the coaxial line decoding processing; The data that receive the transmission of MAC module carry out being sent to the coaxial line AD conversion unit after the coaxial line encoding process.
8, ethernet terminal as claimed in claim 6 is characterized in that,
Described coaxial line medium PHY module further comprises: the coaxial line gain unit, be used to receive data from coaxial AD conversion unit, and carry out being sent to coaxial line Media Interface Connector unit after the signal processing and amplifying.
9, ethernet terminal as claimed in claim 6 is characterized in that,
Described coaxial line medium PHY module further comprises: the physical layer encodes unit, be used for receiving from coaxial line codec unit transmission data, and carry out being sent to the coaxial line AD conversion unit after the physical layer encodes reprocessing; Wherein, described physical layer encodes is handled and is made the signal spectrum of the described data of transmitting on coaxial line avoid the frequency spectrum of cable TV signal.
10, as each described ethernet terminal in the claim 6 to 9, it is characterized in that, this ethernet terminal further comprises: the rate-matched module, be used for and become the speed that is complementary with MAC module interface speed from the rate transition of the data of coaxial line PHY module, and the data after this rate transition are sent to the MAC module; The speed that is used for becoming the interface rate with coaxial line medium PHY module to be complementary from the rate transition of the data of MAC module, and the data after this rate transition are sent to coaxial line medium PHY module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810247370XA CN101447948A (en) | 2008-12-29 | 2008-12-29 | Data transmission method and Ethernet terminal |
| PCT/CN2009/074181 WO2010078767A1 (en) | 2008-12-29 | 2009-09-24 | A data transmitting method and an ethernet terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200810247370XA CN101447948A (en) | 2008-12-29 | 2008-12-29 | Data transmission method and Ethernet terminal |
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| CN101447948A true CN101447948A (en) | 2009-06-03 |
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| CNA200810247370XA Pending CN101447948A (en) | 2008-12-29 | 2008-12-29 | Data transmission method and Ethernet terminal |
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| WO (1) | WO2010078767A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010078767A1 (en) * | 2008-12-29 | 2010-07-15 | 杭州华三通信技术有限公司 | A data transmitting method and an ethernet terminal |
| CN102215147A (en) * | 2010-04-01 | 2011-10-12 | 杭州华三通信技术有限公司 | Long-reach Ethernet customer premise equipment and realization method |
| CN101710870B (en) * | 2009-12-01 | 2012-05-23 | 西安终南信息技术有限公司 | Access and data transmission method for mineral long reach Ethernet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114500408A (en) * | 2022-01-13 | 2022-05-13 | 中汽创智科技有限公司 | Ethernet switching device, data processing device and vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101227295B (en) * | 2007-01-15 | 2011-02-02 | 杭州华三通信技术有限公司 | Ethernet transmission method and Ethernet transmitting/receiving device based on coaxial cable network |
| CN101232305B (en) * | 2007-01-23 | 2012-07-25 | 杭州华三通信技术有限公司 | Method and apparatus for adapting Ethernet signal transmission |
| CN101447948A (en) * | 2008-12-29 | 2009-06-03 | 杭州华三通信技术有限公司 | Data transmission method and Ethernet terminal |
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2008
- 2008-12-29 CN CNA200810247370XA patent/CN101447948A/en active Pending
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010078767A1 (en) * | 2008-12-29 | 2010-07-15 | 杭州华三通信技术有限公司 | A data transmitting method and an ethernet terminal |
| CN101710870B (en) * | 2009-12-01 | 2012-05-23 | 西安终南信息技术有限公司 | Access and data transmission method for mineral long reach Ethernet |
| CN102215147A (en) * | 2010-04-01 | 2011-10-12 | 杭州华三通信技术有限公司 | Long-reach Ethernet customer premise equipment and realization method |
| CN102215147B (en) * | 2010-04-01 | 2013-12-25 | 杭州华三通信技术有限公司 | Long-reach Ethernet customer premise equipment and realization method |
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| WO2010078767A1 (en) | 2010-07-15 |
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Application publication date: 20090603 |