CN102546314A - Data transmission method for Ethernet head end device of coaxial cable - Google Patents
Data transmission method for Ethernet head end device of coaxial cable Download PDFInfo
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- CN102546314A CN102546314A CN2010105971028A CN201010597102A CN102546314A CN 102546314 A CN102546314 A CN 102546314A CN 2010105971028 A CN2010105971028 A CN 2010105971028A CN 201010597102 A CN201010597102 A CN 201010597102A CN 102546314 A CN102546314 A CN 102546314A
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Abstract
The invention relates to a data transmission method for an Ethernet head end device of a coaxial cable. The head end device comprises a first coaxial cable Ethernet module, a second coaxial cable Ethernet module and an Ethernet interface unit which are connected with each other. After a radio frequency input end of a radio frequency filtering unit of the first coaxial cable Ethernet module receives analog signals, the analog signals are sent to a main chip unit of the first coaxial cable Ethernet module sequentially through a signal coupling unit of the first coaxial cable Ethernet module and a signal transceiving unit of the first coaxial cable Ethernet module, the main chip unit of the first coaxial cable Ethernet module converts the analog signals into digital signals, and then the digital signals are respectively sent to the Ethernet interface unit or a main chip unit of the second coaxial cable Ethernet module. Therefore, the data transmission method for the Ethernet head end device of the coaxial cable is high in data transmission efficiency, simple and convenient to operate and wide in application range.
Description
Technical field
The present invention relates to network equipment application, particularly network headend application specifically is meant a kind of coaxial cable Ethernet head end equipment data transmission method.
Background technology
The TV signal pattern of China just progressively shifts to digital signal from analog signal, cable TV network from monotropic transformation to two-way, thereby realize transformation from the simple function of network to triple play, the integration of three networks.The continuous development need cable TV network of the demand in market and New Television Technology realizes that the two-way user of the whole network inserts.And two-way user's access technology in the past can not adapt to the needs of striving unexpectedly of two-way user's access market and the two-way integrated service development of cable TV network like CMTS+Cable modem and FTTB+LAN technology.Therefore; Two-way access technology based on coaxial cable---EOC (Ethernet OverCoax; Coaxial cable loads Ethernet) technology be tending towards ripe, for the two-way user of cable TV network the whole network inserts and the benign development of two-way integrated service has brought new opportunity.
The EOC technology combines IP data and cable TV signal exactly, inserts with same cable and sends into the user.Neither influence the transmission of cable TV signal, have the two-way broad band Integrated service that exclusively enjoys to insert again, have good adaptability and networking access scheme flexibly.Simultaneously; It need not original cable TV network is carried out two-way construction transformation; Perhaps carry out the engineering that large-scale category-5 cable is applied to the family, difficulty, the whole network cover cost height and long problems of improvement project cycle to have overcome the construction of registering one's residence in the cable TV network bilateral network transformation process.Though the cutting point of various EOC technology research is slightly different with technical method, all can be applicable to the cable TV network field, through the coaxial cable transmission of data signals.
The shortcoming that the at present comparatively common headend that is applied to the EOC technology is used is; Its function relies on master chip to realize fully; Therefore can't satisfy relatively more complicated application such as network management, and in the headend of realizing Network Management Function, because its structure is comparatively complicated; So data transmission efficiency is relatively poor, thus to the deleterious impact of applying of EOC technology.
Summary of the invention
The objective of the invention is to have overcome above-mentioned shortcoming of the prior art, provide a kind of data transmission efficiency higher, easy and simple to handle, and range of application coaxial cable Ethernet head end equipment data transmission method comparatively widely.
Described headend comprises interconnective first coaxial cable ethernet module and Ethernet interface unit; The described first coaxial cable ethernet module comprises master chip unit, rf filtering unit, signal coupling unit, signal transmitting and receiving unit; Described rf filtering unit connects described Ethernet interface unit through described signal coupling unit, signal transmitting and receiving unit, master chip unit in regular turn, and described rf filtering unit comprises rf inputs and RF output end.
In order to realize above-mentioned purpose, coaxial cable Ethernet head end equipment data transmission method of the present invention may further comprise the steps:
(1) rf inputs of the rf filtering unit of the described first coaxial cable ethernet module receives analog signal;
(2) the rf filtering unit of the described first coaxial cable ethernet module with described analog signal the master chip unit that is sent to the described first coaxial cable ethernet module, signal coupling unit and the signal transmitting and receiving unit through the described first coaxial cable ethernet module successively;
(3) the master chip unit of the described first coaxial cable ethernet module is a digital signal with described analog signal conversion.
In this coaxial cable Ethernet head end equipment data transmission method, described data transmission method is further comprising the steps of afterwards in step (3):
(4) the master chip unit of the described first coaxial cable ethernet module is sent to the Ethernet interface unit with described digital signal;
(5) described Ethernet interface unit receives digital signal from Ethernet;
(6) described Ethernet interface unit is sent to described digital signal the master chip unit of the described first coaxial cable ethernet module;
(7) the master chip unit of the described first coaxial cable ethernet module converts described digital signal into analog signal;
(8) master chip of the described first coaxial cable ethernet module with described analog signal the rf filtering unit that is sent to the described first coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described first coaxial cable ethernet module successively.
In this coaxial cable Ethernet head end equipment data transmission method; Described headend also comprises network management unit; Described network management unit connects described Ethernet interface unit, and described data transmission method is further comprising the steps of before in described step (1):
(0) described network management unit is carried out the initialization setting.
In this coaxial cable Ethernet head end equipment data transmission method; Described headend also comprises the second coaxial cable ethernet module; The described second coaxial cable ethernet module is connected in the described first coaxial cable ethernet module; The RF output end of the rf filtering unit of the described second coaxial cable ethernet module connects outside coaxial cable ethernet end device through coaxial cable, and described data transmission method is further comprising the steps of afterwards in described step (3):
The master chip unit of (4 ') described first coaxial cable ethernet module is sent to described digital signal the master chip unit of the second coaxial cable ethernet module;
The master chip unit of (5 ') described second coaxial cable ethernet module converts described digital signal into analog signal;
The master chip unit of (6 ') described second coaxial cable ethernet module is the rf filtering unit that is sent to the described second coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described second coaxial cable ethernet module successively with described analog signal.
In this coaxial cable Ethernet head end equipment data transmission method, described data transmission method is further comprising the steps of afterwards in step (6 '):
The rf filtering unit of (7 ') described second coaxial cable ethernet module receives analog signal from the coaxial cable ethernet end device;
The rf filtering unit of (8 ') described second coaxial cable ethernet module is sent to described analog signal the master chip unit of the described second coaxial cable ethernet module successively through described signal coupling unit and signal transmitting and receiving unit;
The master chip unit of (9 ') described second coaxial cable ethernet module is a digital signal with described analog signal conversion;
The master chip unit of (10 ') described second coaxial cable ethernet module is sent to described digital signal the master chip unit of the described first coaxial cable ethernet module;
The master chip unit of (11 ') described first coaxial cable ethernet module converts described digital signal into analog signal;
The master chip unit of (12 ') described first coaxial cable ethernet module is the rf filtering unit that is sent to the described first coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described first coaxial cable ethernet module successively with described analog signal.
Adopted the coaxial cable Ethernet head end equipment data transmission method of this invention; After the rf inputs of the rf filtering unit of its first coaxial cable ethernet module receives analog signal; The master chip unit that is sent to the described first coaxial cable ethernet module, signal coupling unit and the signal transmitting and receiving unit through the described first coaxial cable ethernet module successively with analog signal; The master chip unit of the first coaxial cable ethernet module is a digital signal with analog signal conversion; Be sent to the master chip unit of the Ethernet interface unit or the second coaxial cable ethernet module then respectively; Utilize the data transmission efficiency of coaxial cable Ethernet head end equipment data transmission method of the present invention higher thereby make; Easy and simple to handle, and the range of application of this method is comparatively extensive, helps the further popularization and the application of EOC technology.
Description of drawings
Fig. 1 is the structural representation of the employed coaxial cable Ethernet head end of data transmission method of the present invention equipment.
Fig. 2 is with the schematic flow sheet of the execution mode of transfer of data to Ethernet in the coaxial cable Ethernet head end equipment data transmission method of the present invention.
Fig. 3 is with the schematic flow sheet of the execution mode of transfer of data to terminal equipment in the coaxial cable Ethernet head end equipment data transmission method of the present invention.
Embodiment
In order more to be expressly understood technology contents of the present invention, the special following examples of lifting specify.
See also shown in Figure 1ly, be the structural representation of the employed headend of coaxial cable Ethernet head end equipment data transmission method of the present invention.This headend comprises interconnective first coaxial cable ethernet module and Ethernet interface unit; The described first coaxial cable ethernet module comprises master chip unit, rf filtering unit, signal coupling unit, signal transmitting and receiving unit; Described rf filtering unit connects described Ethernet interface unit through described signal coupling unit, signal transmitting and receiving unit, master chip unit in regular turn, and described rf filtering unit comprises rf inputs and RF output end.
As shown in Figure 2, be the schematic flow sheet of a kind of execution mode of coaxial cable Ethernet head end equipment data transmission method of the present invention.
In this embodiment, described data transmission method may further comprise the steps:
(1) rf inputs of the rf filtering unit of the described first coaxial cable ethernet module receives analog signal;
(2) the rf filtering unit of the described first coaxial cable ethernet module with described analog signal the master chip unit that is sent to the described first coaxial cable ethernet module, signal coupling unit and the signal transmitting and receiving unit through the described first coaxial cable ethernet module successively;
(3) the master chip unit of the described first coaxial cable ethernet module is a digital signal with described analog signal conversion;
(4) the master chip unit of the described first coaxial cable ethernet module is sent to the Ethernet interface unit with described digital signal;
(5) described Ethernet interface unit receives digital signal from Ethernet;
(6) described Ethernet interface unit is sent to described digital signal the master chip unit of the described first coaxial cable ethernet module;
(7) the master chip unit of the described first coaxial cable ethernet module converts described digital signal into analog signal;
(8) master chip of the described first coaxial cable ethernet module with described analog signal the rf filtering unit that is sent to the described first coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described first coaxial cable ethernet module successively.
A kind of preferred embodiment in, described headend also comprises network management unit, described network management unit connects described Ethernet interface unit, described data transmission method is further comprising the steps of before in described step (1):
(0) described network management unit is carried out the initialization setting.
In another embodiment of the invention; As shown in Figure 3; Described headend also comprises the second coaxial cable ethernet module; The described second coaxial cable ethernet module is connected in the described first coaxial cable ethernet module, and the RF output end of the rf filtering unit of the described second coaxial cable ethernet module connects outside coaxial cable ethernet end device through coaxial cable.This execution mode is as shown in Figure 3, may further comprise the steps:
(1) rf inputs of the rf filtering unit of the described first coaxial cable ethernet module receives analog signal;
(2) the rf filtering unit of the described first coaxial cable ethernet module with described analog signal the master chip unit that is sent to the described first coaxial cable ethernet module, signal coupling unit and the signal transmitting and receiving unit through the described first coaxial cable ethernet module successively;
(3) the master chip unit of the described first coaxial cable ethernet module is a digital signal with described analog signal conversion;
The master chip unit of (4 ') described first coaxial cable ethernet module is sent to described digital signal the master chip unit of the second coaxial cable ethernet module;
The master chip unit of (5 ') described second coaxial cable ethernet module converts described digital signal into analog signal;
The master chip unit of (6 ') described second coaxial cable ethernet module is the rf filtering unit that is sent to the described second coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described second coaxial cable ethernet module successively with described analog signal;
The rf filtering unit of (7 ') described second coaxial cable ethernet module receives analog signal from the coaxial cable ethernet end device;
The rf filtering unit of (8 ') described second coaxial cable ethernet module is sent to described analog signal the master chip unit of the described second coaxial cable ethernet module successively through described signal coupling unit and signal transmitting and receiving unit;
The master chip unit of (9 ') described second coaxial cable ethernet module is a digital signal with described analog signal conversion;
The master chip unit of (10 ') described second coaxial cable ethernet module is sent to described digital signal the master chip unit of the described first coaxial cable ethernet module;
The master chip unit of (11 ') described first coaxial cable ethernet module converts described digital signal into analog signal;
The master chip unit of (12 ') described first coaxial cable ethernet module is the rf filtering unit that is sent to the described first coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described first coaxial cable ethernet module successively with described analog signal.
In an application of the invention; Utilize first kind of execution mode of the present invention; Utilize the master chip unit of the first coaxial cable ethernet module that the analog signal conversion of rf inputs input is exported from the Ethernet interface unit for digital signal, directly apply to ethernet network device.Also can utilize second kind of execution mode of the present invention; The analog signal of the master chip unit of the first coaxial cable ethernet module is redispatched to the master chip unit of the second coaxial cable ethernet module, and be sent to the coaxial cable ethernet end device via the rf filtering unit of the second coaxial cable ethernet module.Therefore, the data transmission efficiency of coaxial cable Ethernet head end equipment data transmission method of the present invention is higher, uses easy.
Adopted the coaxial cable Ethernet head end equipment data transmission method of this invention; After the rf inputs of the rf filtering unit of its first coaxial cable ethernet module receives analog signal; The master chip unit that is sent to the described first coaxial cable ethernet module, signal coupling unit and the signal transmitting and receiving unit through the described first coaxial cable ethernet module successively with analog signal; The master chip unit of the first coaxial cable ethernet module is a digital signal with analog signal conversion; Be sent to the master chip unit of the Ethernet interface unit or the second coaxial cable ethernet module then respectively; Utilize the data transmission efficiency of coaxial cable Ethernet head end equipment data transmission method of the present invention higher thereby make; Easy and simple to handle, and the range of application of this method is comparatively extensive, helps the further popularization and the application of EOC technology.
In this specification, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (5)
1. coaxial cable Ethernet head end equipment data transmission method; Described headend comprises interconnective first coaxial cable ethernet module and Ethernet interface unit; The described first coaxial cable ethernet module comprises master chip unit, rf filtering unit, signal coupling unit, signal transmitting and receiving unit; Described rf filtering unit connects described Ethernet interface unit through described signal coupling unit, signal transmitting and receiving unit, master chip unit in regular turn; Described rf filtering unit comprises rf inputs and RF output end, it is characterized in that, described data transmission method may further comprise the steps:
(1) rf inputs of the rf filtering unit of the described first coaxial cable ethernet module receives analog signal;
(2) the rf filtering unit of the described first coaxial cable ethernet module with described analog signal the master chip unit that is sent to the described first coaxial cable ethernet module, signal coupling unit and the signal transmitting and receiving unit through the described first coaxial cable ethernet module successively;
(3) the master chip unit of the described first coaxial cable ethernet module is a digital signal with described analog signal conversion.
2. coaxial cable Ethernet head end equipment data transmission method according to claim 1 is characterized in that, described data transmission method is further comprising the steps of afterwards in step (3):
(4) the master chip unit of the described first coaxial cable ethernet module is sent to the Ethernet interface unit with described digital signal;
(5) described Ethernet interface unit receives digital signal from Ethernet;
(6) described Ethernet interface unit is sent to described digital signal the master chip unit of the described first coaxial cable ethernet module;
(7) the master chip unit of the described first coaxial cable ethernet module converts described digital signal into analog signal;
(8) master chip of the described first coaxial cable ethernet module with described analog signal the rf filtering unit that is sent to the described first coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described first coaxial cable ethernet module successively.
3. coaxial cable Ethernet head end equipment data transmission method according to claim 1 and 2; It is characterized in that; Described headend also comprises network management unit; Described network management unit connects described Ethernet interface unit, and described data transmission method is further comprising the steps of before in described step (1):
(0) described network management unit is carried out the initialization setting.
4. coaxial cable Ethernet head end equipment data transmission method according to claim 3; It is characterized in that; Described headend also comprises the second coaxial cable ethernet module; The described second coaxial cable ethernet module is connected in the described first coaxial cable ethernet module; The RF output end of the rf filtering unit of the described second coaxial cable ethernet module connects outside coaxial cable ethernet end device through coaxial cable, and described data transmission method is further comprising the steps of afterwards in described step (3):
The master chip unit of (4 ') described first coaxial cable ethernet module is sent to described digital signal the master chip unit of the second coaxial cable ethernet module;
The master chip unit of (5 ') described second coaxial cable ethernet module converts described digital signal into analog signal;
The master chip unit of (6 ') described second coaxial cable ethernet module is the rf filtering unit that is sent to the described second coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described second coaxial cable ethernet module successively with described analog signal.
5. coaxial cable Ethernet head end equipment data transmission method according to claim 4 is characterized in that, described data transmission method is further comprising the steps of afterwards in step (6 '):
The rf filtering unit of (7 ') described second coaxial cable ethernet module receives analog signal from the coaxial cable ethernet end device;
The rf filtering unit of (8 ') described second coaxial cable ethernet module is sent to described analog signal the master chip unit of the described second coaxial cable ethernet module successively through described signal coupling unit and signal transmitting and receiving unit;
The master chip unit of (9 ') described second coaxial cable ethernet module is a digital signal with described analog signal conversion;
The master chip unit of (10 ') described second coaxial cable ethernet module is sent to described digital signal the master chip unit of the described first coaxial cable ethernet module;
The master chip unit of (11 ') described first coaxial cable ethernet module converts described digital signal into analog signal;
The master chip unit of (12 ') described first coaxial cable ethernet module is the rf filtering unit that is sent to the described first coaxial cable ethernet module of signal transmitting and receiving unit and the signal coupling unit through the described first coaxial cable ethernet module successively with described analog signal.
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| CN2010105971028A CN102546314A (en) | 2010-12-20 | 2010-12-20 | Data transmission method for Ethernet head end device of coaxial cable |
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| CN2010105971028A CN102546314A (en) | 2010-12-20 | 2010-12-20 | Data transmission method for Ethernet head end device of coaxial cable |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030110509A1 (en) * | 1999-12-13 | 2003-06-12 | Levinson Frank H. | Cable television return link system with high data-rate side-band communication channels |
| CN101127863A (en) * | 2007-09-26 | 2008-02-20 | 杭州华三通信技术有限公司 | An interface device |
| CN101841444A (en) * | 2010-04-06 | 2010-09-22 | 福建金钱猫电子科技有限公司 | Device for realizing broadband access by utilizing coaxial cable |
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2010
- 2010-12-20 CN CN2010105971028A patent/CN102546314A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030110509A1 (en) * | 1999-12-13 | 2003-06-12 | Levinson Frank H. | Cable television return link system with high data-rate side-band communication channels |
| CN101127863A (en) * | 2007-09-26 | 2008-02-20 | 杭州华三通信技术有限公司 | An interface device |
| CN101841444A (en) * | 2010-04-06 | 2010-09-22 | 福建金钱猫电子科技有限公司 | Device for realizing broadband access by utilizing coaxial cable |
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Application publication date: 20120704 |