CN1395413A - Coaxial long-distance Ethernet connection method and its equipment - Google Patents
Coaxial long-distance Ethernet connection method and its equipment Download PDFInfo
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- CN1395413A CN1395413A CN 01120220 CN01120220A CN1395413A CN 1395413 A CN1395413 A CN 1395413A CN 01120220 CN01120220 CN 01120220 CN 01120220 A CN01120220 A CN 01120220A CN 1395413 A CN1395413 A CN 1395413A
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Abstract
The invention relates to the coaxial long-distance Ethernet access method and the device. The existing cable TV HFC network is a wide band network possessing the basis of realizing the user's wide band access. The invention is mainly used in the condition of the multiple user units such as residential district, hotels, buildings and student dormitory building etc. The hopping frequency and token techniques are used to treat with the synchronous transmission of language, visual frequency and data in long-distance and at high-speed rate so as to solve the distance limit and the dated cable, providing the basis for using Ethernet. Thus, the high-speed, symmetrical up/down loading and long-distance transmission is realized. Both Ethernet and cable TV services are supported on the coaxial by the invention so as to realize the break through so called 'last one kilometer'.
Description
What the present invention relates to is a kind of coaxial long-distance Ethernet cut-in method, and the equipment that is used to realize this method, to utilize existing cable TV HFC network, realizes that consumer wideband inserts; Belong to network communications technology.
In the prior art, the technology close with this equipment is based on the wire cable modem technology of F/TDMA and SCDMA.
Wherein, F/TDMA network technology basis is that data stream modulates is become RF stream, frequency division/time-division, up employing QPSK the QAM modulation, speed 1-10M; The characteristics of this network are that part is utilized existing HFC net.
And SCDMA network technology basis also is that data stream modulates is become RF stream, carries out S-CDMA then; This network characteristics is to make full use of existing HFC net.
The shortcoming of above-mentioned two kinds of network technologies is shared channels, has noise to compile, and needs to increase light passback/accepting device, and is high to coaxial requirement.
Main purpose of the present invention is to provide a kind of coaxial long-distance Ethernet cut-in method, this method can be in long distance be coaxial, reach rate processing language, video and the data sync transmission of 100-500MBPS and even 1GBPS according to the speed of 10MBPS or 56MBPS, overcome with preceding because of distance limit or and cost, technology cause can't utilize the defective of Ethernet, realize the breakthrough of " last kilometer ".
Further object of the present invention is to provide a kind of coaxial long-distance Ethernet access device that is used to realize described method.
Purpose of the present invention can be achieved in the following manner: head end, amplifier, repeater and user side are set between Ethernet incoming end and user side, wherein, head end is supported the harmless transmission of cable TV signal and finishes with the optical node Fast Ethernet to be connected with amplifier, has solved separating and synthesizing of TV signal and network digital signal; Repeater is supported the harmless transmission of cable TV signal and is cooperated described amplifier to strengthen the intensity of network digital signal; User side is provided with TV input, output port and television set and the computer equipment of twisted-pair feeder 10M RJ-45 interface to be connected the user, and the broadband network of finishing the user under the support of described head end, amplifier and repeater connects.
Below be description of drawings of the present invention, by description of drawings and engage the following detailed description, can be expressly understood the present invention, wherein:
Accompanying drawing 1 is coaxial long-distance Ethernet access device (CLRE) the head end simplified schematic diagram of equipment of the present invention;
Accompanying drawing 2 is simplified schematic diagram of the amplifier of accompanying drawing 1 described coaxial long-distance Ethernet access device (CLRE);
Accompanying drawing 3 is simplified schematic diagram of the repeater of accompanying drawing 1 described coaxial long-distance Ethernet access device (CLRE);
Accompanying drawing 4 is simplified schematic diagram of the user side of accompanying drawing 1 described coaxial long-distance Ethernet access device (CLRE);
Below be detailed description of the present invention, by the following detailed description and engage embodiment, can be expressly understood the present invention more.
As everyone knows, coaxial dielectric itself does not have unidirectional two-way restriction.Current cable is propagated the bidirectional high speed that adopts one-way transmission, researcher of the present invention to utilize this medium to finish data-signal as TV signal and is transmitted.
Researcher of the present invention utilizes frequency hopping, spread spectrum and token ring to handle the means of conflict, the 75M-550M that uses except that television transmission transmission band in according to the performance of cable TV wire rod device, select for use and finish that the data up-downgoing is modulated and transmission.
Because equipment of the present invention has made full use of frequency hopping, spread spectrum, therefore do not need the signal frequency range is limited, data-signal can the optimal frequency range of selection voluntarily transmit.
Spread spectrum of the present invention, formerly former is the broadband wireless communication technique of using in the military communication field, uses spread spectrum, can make data complete reliable in wireless transmission.And guarantee that the data of transmitting at different frequency range simultaneously can not interfere with each other.
Frequency hopping of the present invention is different fully with the direct sequence spread spectrum technology, it is another spread spectrum, the carrier frequency of described frequency hopping is subjected to the control of a pseudo noise code, in its bandwidth of operation scope, its frequency constantly changes frequency by random law, and the frequency of receiving terminal is also pressed the random law variation, and maintenance is consistent with the Changing Pattern of transmitting terminal.The height of frequency hopping directly reflects the performance of frequency-hopping system, and frequency hopping is high more, and jamproof performance is good more, and military frequency-hopping system can reach per second jumpings up to ten thousand.In fact the mobile communication gsm system also is a frequency-hopping system.For the consideration of cost, commercial frequency-hopping system hop rate is all slower, generally below 50 jumping/seconds.The present invention is applied to cable TV coaxial with these technology.
Coaxial long-distance Ethernet access device of the present invention (CLRE) comprises a head end (seeing accompanying drawing 1), and this head end has coaxial cable input, output port, supports the harmless transmission of cable TV signal; This head end also has twisted-pair feeder/optical fiber interface, finishes with the optical node Fast Ethernet to be connected, and this mode has solved separating of TV signal and network digital signal and synthetic, has guaranteed the network rate on the coaxial cable.
Described equipment also comprises an amplifier (seeing accompanying drawing 2), this amplifier has coaxial cable input, output port, support the harmless transmission of cable TV signal, cooperate described head end to solve separating of TV signal and network digital signal and synthetic, guarantee the network rate on the coaxial cable.
Described equipment also comprises a repeater (seeing accompanying drawing 3), this repeater has coaxial cable input, output port, support the harmless transmission of cable TV signal, cooperate described amplifier to strengthen the intensity of network digital signal simultaneously, guarantee the network rate on the coaxial cable.
Equipment of the present invention also comprises a ustomer premises access equipment (seeing accompanying drawing 4), described user side has TV input, output port and twisted-pair feeder 10M RJ-45 interface, the television set and the computer equipment that connect the user, the broadband network of finishing the user under the support of described head end, amplifier and repeater connects.
The invention has the advantages that does not need the frequency range of the logarithm number of it is believed that transmission to stipulate data Signal can the most suitable frequency range of selection voluntarily transmit, and realizes the network bi-directional transformation, releases Put the circuit limit bandwidth that the bandwidth because of amplifier causes, data signal has been had the work of relaying With, and eliminate the passback noise that amplifier brings.
Claims (10)
1, a kind of coaxial long-distance Ethernet cut-in method, it is characterized in that comprising the setting of head end, amplifier, repeater and user terminal, utilize the head end of forming by coaxial cable input, coaxial cable output port and twisted-pair feeder/optical fiber interface to finish and be connected with the optical node Fast Ethernet in described method; Adopt the amplifier of forming by coaxial cable input, output port to support the harmless transmission of cable TV signal simultaneously, cooperate head end to realize separating of TV signal and network digital signal and synthetic; Adopt the repeater of forming by coaxial cable input, output port to support the harmless transmission of cable TV signal again, cooperate amplifier to strengthen the intensity of network digital signal simultaneously; The television set that also adopts the ustomer premises access equipment of being made up of TV input, output port and twisted-pair feeder 10M RJ-45 interface to be connected the user is connected with the broadband network that computer equipment is finished the user; Simultaneously finish whole piece coaxial ethernet feature with frequency-hopping spread spectrum and token ring technology described in coaxial, coaxially go up the Ethernet transmission to share speed be 10M, 56M, 100M, 500M, 1000M, the user terminal transmission rate is 10M.
2, method according to claim 1, it is characterized in that utilizing frequency hopping, spread spectrum and token ring to handle the means of conflict, according to the performance of cable TV wire rod device, select for use and finish data up-downgoing modulation and transmission in the transmission band the 75M-550M that uses except that television transmission.
3, method according to claim 1 is characterized in that data-signal can the only frequency range of selection voluntarily transmit,
4, a kind of coaxial long-distance Ethernet access device that is used for claim 1 is characterized in that described equipment comprises head end, amplifier, repeater and user terminal.
5, equipment according to claim 5 is characterized in that described head end has coaxial cable input, output port, and twisted-pair feeder/optical fiber interface.
6, equipment according to claim 5 is characterized in that described amplifier has coaxial cable input, output port.
7, equipment according to claim 5 is characterized in that described repeater has coaxial cable input, output port.
8, equipment according to claim 5 is characterized in that described ustomer premises access equipment has TV input, output port and twisted-pair feeder 10M RJ-45 interface.
9, equipment according to claim 5 is characterized in that it is 10M, 56M, 100M, 500M, 1000M that speed is shared in the transmission of described coaxial upward Ethernet, and the user terminal transmission rate is 10M; Described equipment utilization frequency hopping, spread spectrum and token ring are handled the means of conflict, according to the performance of cable TV wire rod device, select for use and finish data up-downgoing modulation and transmission in the transmission band the 75M-550M that uses except that television transmission.
10, equipment according to claim 5 is characterized in that the data-signal of described equipment can the only frequency range of selection voluntarily transmit,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011202203A CN1173544C (en) | 2001-07-09 | 2001-07-09 | Coaxial long-distance Ethernet connection method and its equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011202203A CN1173544C (en) | 2001-07-09 | 2001-07-09 | Coaxial long-distance Ethernet connection method and its equipment |
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| CN1395413A true CN1395413A (en) | 2003-02-05 |
| CN1173544C CN1173544C (en) | 2004-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011202203A Expired - Fee Related CN1173544C (en) | 2001-07-09 | 2001-07-09 | Coaxial long-distance Ethernet connection method and its equipment |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008086671A1 (en) * | 2007-01-15 | 2008-07-24 | Hangzhou H3C Technologies Co., Ltd. | Adaptation method and apparatus for ethernet signal transmission |
| WO2008122183A1 (en) * | 2007-04-06 | 2008-10-16 | Hangzhou H3C Technologies Co., Ltd. | Method and terminal for data transmission |
| CN101075882B (en) * | 2006-05-15 | 2010-04-21 | 杭州华三通信技术有限公司 | Ethernet transceiver and method for realizing signal long-distance transmission |
| CN101848057A (en) * | 2008-12-22 | 2010-09-29 | 美国博通公司 | Systems and methods for physical layer (phy) concatenation in moca network |
| 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 |
| CN101193043B (en) * | 2006-12-01 | 2012-02-15 | 北京东方广视科技股份有限公司 | A method for realizing data back transfer in CATV 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 |
| CN101632261B (en) * | 2007-02-06 | 2013-09-18 | 熵敏通讯股份有限公司 | Full mesh rates transaction in a network |
| CN104396166A (en) * | 2012-06-21 | 2015-03-04 | 高通股份有限公司 | Repeater fiber-coax units |
-
2001
- 2001-07-09 CN CNB011202203A patent/CN1173544C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075882B (en) * | 2006-05-15 | 2010-04-21 | 杭州华三通信技术有限公司 | Ethernet transceiver and method for realizing signal long-distance transmission |
| CN101193043B (en) * | 2006-12-01 | 2012-02-15 | 北京东方广视科技股份有限公司 | A method for realizing data back transfer in CATV network |
| WO2008086671A1 (en) * | 2007-01-15 | 2008-07-24 | Hangzhou H3C Technologies Co., Ltd. | Adaptation method and apparatus for ethernet signal transmission |
| 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 |
| CN101632261B (en) * | 2007-02-06 | 2013-09-18 | 熵敏通讯股份有限公司 | Full mesh rates transaction in a network |
| WO2008122183A1 (en) * | 2007-04-06 | 2008-10-16 | Hangzhou H3C Technologies Co., Ltd. | Method and terminal for data transmission |
| CN101848057A (en) * | 2008-12-22 | 2010-09-29 | 美国博通公司 | Systems and methods for physical layer (phy) concatenation in moca network |
| CN101848057B (en) * | 2008-12-22 | 2013-07-31 | 美国博通公司 | Network based on coaxial cable and communication method thereof |
| US8811403B2 (en) | 2008-12-22 | 2014-08-19 | Broadcom Corporation | Systems and methods for physical layer (“PHY”) concatenation in a multimedia over coax alliance network |
| CN104396166A (en) * | 2012-06-21 | 2015-03-04 | 高通股份有限公司 | Repeater fiber-coax units |
| CN104396166B (en) * | 2012-06-21 | 2017-08-29 | 高通股份有限公司 | Repeater optical fibre-coaxial cable unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1173544C (en) | 2004-10-27 |
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