CN105846986A - Coaxial line signal frequency shift transmission method - Google Patents
Coaxial line signal frequency shift transmission method Download PDFInfo
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- CN105846986A CN105846986A CN201610337780.8A CN201610337780A CN105846986A CN 105846986 A CN105846986 A CN 105846986A CN 201610337780 A CN201610337780 A CN 201610337780A CN 105846986 A CN105846986 A CN 105846986A
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- China
- Prior art keywords
- frequency
- signal
- coaxial
- frequency conversion
- conversion chip
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0037—Inter-user or inter-terminal allocation
Abstract
The invention discloses a coaxial line signal frequency shift transmission method based on a tunable frequency-conversion communication system. The method adopts the tunable frequency-conversion communication system to carry out transmission. The system comprises local-side equipment NC comprising a tunable frequency-conversion chip A and user-side equipment NU comprising a tunable frequency-conversion chip B, wherein the local-side equipment NC is connected with a coaxial distribution network. Ethernet data signals sent by the local-side equipment NC of EOC are processed by the tunable frequency-conversion chip A to enable a signal working frequency band to be switched to a target frequency range as needed; and the signals are transmitted to the user-side equipment NU through the coaxial distribution network, and the signal frequency is restored to the original frequency through the tunable frequency conversion chip B in the user-side equipment NU. The method effectively solves the problem of channel occupation or channel interference of various EOC systems in the practical use process, and the normal use purpose is achieved.
Description
Technical field
The present invention relates to the transmission method of a kind of frequency translation, be specifically related to the biography that in a kind of coaxial line, signal frequency is moved
Transmission method, is applied to all kinds of system transmitting signal on coaxial line, and the method belongs to coaxial access technology field.
Background technology
After entering rear 21st century, the application of communication system has obtained the development advanced by leaps and bounds, along with IPTV, HDTV,
The release of the broadband Internet service such as VoIP so that user is for the broadband access of the multimedia communications such as data, voice, image
Demand is the most vigorous.And cable TV network (CATV) is as one of the widest network of coverage, there is bandwidth, resource rich
The features such as richness, utilize this network of throwing the net for effective percentage, and a lot of tissues or business unit propose ethernet signal by wired electricity
The idea that view network is transmitted, has thus been born and has much used the access of Ethernet protocol based on wired TV coaxial cable net
Technology (EOC technology), at present, the EOC technology of comparative maturity mainly has: baseband EOC technology, modulation EOC technology.
Baseband EOC, refers to a kind of Ethernet transmission technology based on coaxial cable using passive device.It uses base band
Coded system, is only converted into the unipolar signal being easy to coaxial cable transmission by the bipolar signal being used for Double-strand transmission.Nothing
Source EOC technology accesses bridge, the noise of user-isolated end by placing at corridor head end, thus solves cable TV network
The most universal the most scabrous problem funnel noise existed.But passive EOC is only applicable to point-to-point topological structure,
The cable TV network that user distribution relatively dissipates can not be supported.
Active modulation EOC technology currently mainly has the skills such as HomePlug AV, MoCA, WiFi, over Coax, ECAN
Art.HomePlug AV technology uses 2MHz-28 MHz frequency range, and the carrier frequency of MOCA technology uses 800 MHz-1500
MHz frequency range, WiFi over Coax technology uses 802.11b, by wireless high band 2.5GHz carrier wave, moves coax
750-950MHz frequency range, it is possible to provide the physical layer rate of 108Mbps.HomePlug AV and MOCA all uses OFDM to adjust
System, capacity of resisting disturbance is strong；HomePlug AV physical layer access rate is up to 200Mbps, and MOCA is up to 270Mbps.
But these several EOC technology have a common shortcoming, its transmission band cannot unrestricted choice, or can only be limited
Several patterns in choose, and within these patterns are the most all a frequency range the least, when these channel frequency noises
Relatively big (this situation is the most universal in actual cable TV network) or time this frequency is taken by other signals, to EOC
The impact of system will be the most fatal.
Summary of the invention
Present invention aims to the deficiency of prior art, it is provided that a kind of applied widely, compatible strong coaxial
The transmission method that in line, signal frequency is moved, can be used for solving the problem that EOC system channel is single and the most disturbed, can
Extend to the coaxial network of various signal transmission technology.
For achieving the above object, the present invention uses following technical proposals:
The transmission method that in a kind of coaxial line, signal band is moved, uses tunable frequency conversion communication system to be transmitted, its feature
It is: described tunable frequency conversion communication system is sequentially connected with coaxial distribution by the local side apparatus NC containing tunable frequency conversion chip first
Net, ustomer premises access equipment NU containing tunable frequency conversion chip second are constituted.The ether data signal that the local side apparatus NC of EOC sends,
Via tunable frequency conversion chip first, signal working frequency range is switched to target frequency bands as required.Transmit extremely through Coaxial distribution network
Ustomer premises access equipment NU, the tunable frequency conversion chip second built-in by it, signal frequency is reduced to original frequency range.Thus effectively solve
The channel that all kinds of EOC systems run in actual use is occupied or channel interference problem, reaches the purpose normally used.
In the transmission method that signal band is moved in above-mentioned a kind of coaxial line, EOC local-side device NC is normally at building
Dao Huo community, mainly by the technology of OFDM (frequency division multiplexing), believes the ether data signal after frequency conversion and radio and television
Number mixing, send into Coaxial distribution network, Coaxial distribution network send to user room.
In the transmission method that signal band is moved in above-mentioned a kind of coaxial line, tunable frequency conversion chip first can be by soft
Part is controlled, and by automatically intercepting channel quality, to choose the transmission frequency passage of optimum, thus the noise that avoids interference is more
Frequency range, it is achieved high-quality signal transmission.
In the transmission method that signal band is moved in above-mentioned a kind of coaxial line, ustomer premises access equipment NU is positioned at user house
In, coaxial it is distributed the coaxial port that net of registering one's residence extends to each room of user；Ustomer premises access equipment NU passes through frequency divider, will be wide
Broadcast TV signal and deliver to coaxial output line mouth, it is achieved the downlink broadcast of TV signal；Ustomer premises access equipment NU is by tunable frequency conversion
Signal frequency is reduced to original frequency range by chip second, is gone out by the data signal transmission of 802.3 series standards.
The present invention compared with prior art, has following obvious prominent substantive distinguishing features and notable technology is entered
Step:
1. the present invention is applied to EOC system, can unrestricted choice transmission band such that it is able to avoid those interchannel noises relatively big or
The frequency range taken by other signals.
2., for same EOC technical network, the present invention can be by the frequency translation of the different amplitudes of multiple signals, it is achieved
The frequency division multiplexing of multi signal channel, thus improves the network bandwidth.
3., for the EOC system of different technologies, the present invention can independently carry out frequency translation, and utilizes branch's distribution etc.
Hybrid device, it is achieved the multiplexing transmission of the different EOC technology in same coaxial line network, is achieved in existing transmission technology
Fusion.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention realizes that in coaxial line, signal frequency range is moved.
Fig. 2 is the schematic diagram that the present invention realizes different EOC technology multiplexing transmission.
Fig. 3 is the NC functional block diagram in the embodiment of the present invention.
Fig. 4 is the NU functional block diagram in the embodiment of the present invention.
Detailed description of the invention
The preferred embodiments of the present invention accompanying drawings is as follows:
Embodiment one:
See the transmission method that signal band in Fig. 1, this coaxial line is moved, use a kind of tunable frequency conversion communication system to pass
It is defeated, it is characterised in that: described tunable frequency conversion communication system is by the EOC local-side device containing tunable frequency conversion chip first (2)
NC(1) Coaxial distribution network (3) and the ustomer premises access equipment NU(5 containing tunable frequency conversion chip second (4) it are sequentially connected with) constitute；Transmission
Program is as follows: described EOC local-side device NC(1) the ether data signal that sends, via tunable frequency conversion chip first (2) by signal
Working frequency range is switched to target frequency bands as required；Through Coaxial distribution network (3) transmission to ustomer premises access equipment NU(5), by it
Tunable frequency conversion chip second (4) put, is reduced to original frequency range by signal frequency；Thus effectively solve all kinds of EOC system in reality
Border use in the channel that runs into is occupied or channel interference problem, reach the purpose normally used.
Embodiment two:
The present embodiment is essentially identical with embodiment one, and special feature is as follows:
Described EOC local-side device NC(1) it is normally at corridor or community, mainly by frequency division multiplexing (OFDM) technology, will be through
Cross the ether data signal after frequency conversion and broadcast television signal mixing, send into Coaxial distribution network (3), Coaxial distribution network (3) send
Reach user room.
Described tunable frequency conversion chip first (2) can be controlled by software, by automatically intercepting channel quality, to choose
Optimum transmission frequency passage, thus the frequency range that the noise that avoids interference is more, it is achieved the signal transmission of high-quality.
Described ustomer premises access equipment NU(5) be positioned in user family, the coaxial net of registering one's residence that is distributed extend to each room of user
Coaxial port；Ustomer premises access equipment NU(5) by frequency divider, broadcast television signal is delivered to coaxial output line mouth, it is achieved TV
The downlink broadcast of signal；Ustomer premises access equipment NU(5) by tunable frequency conversion chip second (4), signal frequency is reduced to original frequency
Section, goes out the data signal transmission of 802.3 series standards.
Embodiment three:
Seeing Fig. 1, in former EOC system, the signal of the local side apparatus of EOC is operated in 5-65MHz section, but therefore band noise is relatively
Greatly, the normal work of EOC system it is unfavorable for.Use the transmission method that signal band in this coaxial line is moved, the local side apparatus of EOC
NC(1) the ether data signal sent, is promoted to 505M-via tunable frequency conversion chip first (2) by signal working frequency range
565MHz (or the most possible target frequency bands), thus avoid the low frequent wave band that noise jamming is bigger, reaches normally to use
Purpose.Through Coaxial distribution network (3) transmission to ustomer premises access equipment NU(5), tunable frequency conversion chip second (4) built-in by it, will
Data signal frequency range is downconverted to 5-65MHz.Frequency spectrum shift transmitting procedure, except mid frequency, remaining parameter all changes without any
Become, unrelated with the technology that EOC uses, and need not change original Coaxial distribution network network.
Embodiment four:
Seeing Fig. 2, the present embodiment is essentially identical with embodiment three, is particular in that and is applied to any two kinds of different EOC technology
Coaxial network in.For realizing the fusion of two kinds of technology, save network cost, improve bandwidth, by the local side apparatus NC1 of EOC1
(6) and the local side apparatus NC2(7 of EOC2) stacking places, NC1 and NC2 respectively built-in tunable frequency conversion chip 1(8) and tunable
Frequency conversion chip 2(9).Two tunable frequency conversion chips respectively by operating frequency by f01And f02Move respectively to f1And f2Frequency
Place, the data signal of 2 frequencies is sent into Coaxial distribution network (11) through wave multiplexer (10), is respectively sent to the user side NU1 of EOC1
(14) and the user side NU2(15 of EOC2), enter corresponding tunable frequency conversion chip 3(12) and tunable frequency conversion chip 4(13),
Respectively frequency is reduced to corresponding band f of respective technology01And f02, transmit a signal to different EOC technical user afterwards, by
This realizes two or more the multiplexing of EOC technology.
Embodiment five:
Seeing Fig. 2, the present embodiment is essentially identical with embodiment three, is particular in that and is applied to EOC technology coaxial network of the same race,
Also can be by using lifting frequency, it is achieved the multiplexing transmission of N number of frequency range, network transmission capacity can be made to improve N times to original system.
If it is N number of that each user increases terminal number, access bandwidth can be increased to original N times.
See Fig. 3, the NC functional block diagram in embodiment.Specifically include that ether data signal connects via RJ45 data
Mouth (17) input, sends to coaxial ether phy chip (18), after the frequency conversion of tunable frequency conversion chip (19), sends to duplex filtering
Device (20).TV signal is direct and frequency conversion data signal multiplexing via input coaxial interface (16), coaxial interface (21) export.
See Fig. 4, in embodiment NU functional block diagram.The mixing TV signal of Coaxial distribution network output and number
The number of it is believed that is entered by coaxial interface (22), isolates TV signal through duplexer filter (23), coaxial interface (26) export.Number
The number of it is believed that is reduced to original frequency range through tunable frequency conversion chip (24), sends into user terminal CPE(25).
Claims (4)
1. the transmission method that in coaxial line, signal band is moved, uses a kind of tunable frequency conversion communication system to be transmitted,
It is characterized in that: described tunable frequency conversion communication system is by EOC local-side device NC containing tunable frequency conversion chip first (2)
(1) it is sequentially connected with Coaxial distribution network (3) and the ustomer premises access equipment NU (5) containing tunable frequency conversion chip second (4) is constituted；Transmission journey
Sequence is as follows: the ether data signal that described EOC local-side device NC (1) sends, via tunable frequency conversion chip first (2) by signalman
Make frequency range and be switched to target frequency bands as required；Transmit to ustomer premises access equipment NU (5) through Coaxial distribution network (3), built-in by it
Tunable frequency conversion chip second (4), signal frequency is reduced to original frequency range；Thus effectively solve all kinds of EOC system in reality
The channel run in using is occupied or channel interference problem, reaches the purpose normally used.
The transmission method that in a kind of coaxial line the most according to claim 1, signal band is moved, it is characterised in that: described
EOC local-side device NC (1) is normally at corridor or community, mainly by frequency division multiplexing (OFDM) technology, and will be after frequency conversion
Ether data signal and broadcast television signal mixing, send into Coaxial distribution network (3), Coaxial distribution network (3) send to user room
Between.
The transmission method that in a kind of coaxial line the most according to claim 1, signal band is moved, it is characterised in that: described can
Tuning frequency conversion chip first (2) can be controlled by software, by automatically intercepting channel quality, to choose the transmission frequency of optimum
Passage, thus the frequency range that the noise that avoids interference is more, it is achieved the signal transmission of high-quality.
The transmission method that in a kind of coaxial line the most according to claim 1, signal band is moved, it is characterised in that: described use
Family end equipment NU (5) is positioned in user family, coaxial be distributed the coaxial port that net of registering one's residence extends to each room of user；User
End equipment NU (5) passes through frequency divider, broadcast television signal is delivered to coaxial output line mouth, it is achieved the downlink broadcast of TV signal；
Signal frequency is reduced to original frequency range by tunable frequency conversion chip second (4) by ustomer premises access equipment NU (5), by 802.3 series marks
Accurate data signal transmission is gone out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610337780.8A CN105846986A (en) | 2016-05-22 | 2016-05-22 | Coaxial line signal frequency shift transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610337780.8A CN105846986A (en) | 2016-05-22 | 2016-05-22 | Coaxial line signal frequency shift transmission method |
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| Publication Number | Publication Date |
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| CN105846986A true CN105846986A (en) | 2016-08-10 |
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ID=56593876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610337780.8A Pending CN105846986A (en) | 2016-05-22 | 2016-05-22 | Coaxial line signal frequency shift transmission method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050164662A1 (en) * | 2004-01-23 | 2005-07-28 | Chaowen Tseng | Frequency conversion in a receiver |
| CN101257543A (en) * | 2008-03-13 | 2008-09-03 | 南通华航科工贸有限公司 | EOC system based on WLAN802.11X standard |
| CN101599822A (en) * | 2009-04-29 | 2009-12-09 | 重庆四联微电子有限公司 | Tunable cable network connecting system of operating frequency and method |
| CN101815046A (en) * | 2009-02-20 | 2010-08-25 | 北京东方信联科技有限公司 | System for realizing data signal transmission in radio frequency equipment |
| CN102299873A (en) * | 2010-06-24 | 2011-12-28 | 创锐讯通讯技术（上海）有限公司 | Physical layer chip in EOC (Ethernet Over Coax) network and realization method thereof |
| CN202737864U (en) * | 2012-08-24 | 2013-02-13 | 苏州云普通讯技术有限公司 | Relay device suitable for point-to-multipoint broadband coaxial access |
| CN203057171U (en) * | 2013-01-11 | 2013-07-10 | 杭州初灵信息技术股份有限公司 | EOC central office equipment compatible for BPL and AV modes |
-
2016
- 2016-05-22 CN CN201610337780.8A patent/CN105846986A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050164662A1 (en) * | 2004-01-23 | 2005-07-28 | Chaowen Tseng | Frequency conversion in a receiver |
| CN101257543A (en) * | 2008-03-13 | 2008-09-03 | 南通华航科工贸有限公司 | EOC system based on WLAN802.11X standard |
| CN101815046A (en) * | 2009-02-20 | 2010-08-25 | 北京东方信联科技有限公司 | System for realizing data signal transmission in radio frequency equipment |
| CN101599822A (en) * | 2009-04-29 | 2009-12-09 | 重庆四联微电子有限公司 | Tunable cable network connecting system of operating frequency and method |
| CN102299873A (en) * | 2010-06-24 | 2011-12-28 | 创锐讯通讯技术（上海）有限公司 | Physical layer chip in EOC (Ethernet Over Coax) network and realization method thereof |
| CN202737864U (en) * | 2012-08-24 | 2013-02-13 | 苏州云普通讯技术有限公司 | Relay device suitable for point-to-multipoint broadband coaxial access |
| CN203057171U (en) * | 2013-01-11 | 2013-07-10 | 杭州初灵信息技术股份有限公司 | EOC central office equipment compatible for BPL and AV modes |
Non-Patent Citations (1)
| Title |
|---|
| 贾治安; 盛谦: "基于可调谐变频芯片的有线宽带接入技术方案", 《中国集成电路》 * |
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Application publication date: 20160810 |