CN100391218C - Long-distance network transmission architecture and relevant equipment - Google Patents
Long-distance network transmission architecture and relevant equipment Download PDFInfo
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- CN100391218C CN100391218C CNB021061319A CN02106131A CN100391218C CN 100391218 C CN100391218 C CN 100391218C CN B021061319 A CNB021061319 A CN B021061319A CN 02106131 A CN02106131 A CN 02106131A CN 100391218 C CN100391218 C CN 100391218C
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Abstract
The present invention relates to a long-distance network transmission framework and a relevant device thereof. An existing CAT 5 transmission-line network is used for wire laying to reach high-speed and long-distance network service; a real body layer device (DSP PHY) with digital signal processing capacity is used for receiving a data signal in a long-distance network in the long-distance network transmission framework, and the data signal is driven to a user end which uses a common real body device so that a network transmission line is used for transmitting high-capacity and high-speed network data signals; the transmission distance of the data signals can exceed 300 meters through the DSP PHY, and the transmission speed of the data signals can be enhanced to bidirectional 100 Mbps; two pairs of transmission lines of the CAT 5 network transmission lines serve as full-duplex transmission, and two pairs of idle transmission lines are used for supporting power supply used for a repeater; thus, the present invention can reduce the cost of practitioner devices and user devices in the network transmission framework, and the network transmission framework can be more easily operated.
Description
Technical field
The present invention relates to the long distance network transmission technology of digital signal, especially a kind of long-distance network transmission architecture and relevant apparatus thereof, physical layer device (Digital SignalProcessing Physical is hereinafter to be referred as DSP PHY) with Digital Signal Processing.
Background technology
Because the development of information industry is quick in recent years, the application of conventional information is handled by simple calculation process, document and Local Area Network (LAN) is used, and develops into gradually via Wide Area Network (WAN) to connect with delivery network information.Moreover PC (PC) function significantly promotes, price declines to a great extent, and impels high function data processing system to popularize in a large number; After adding that Internet (Internet) changes into commercial system from the academic research network, because that correlation technique maturation, network are used is cheap, aboundresources and connection scope are vast, add the fast development of multimedia technology, especially hypertext (Hypertext) and WEB technology, simplify the computer occupation mode, made the growth that Internet is rapid.Because the data content of multimedia messages is horn of plenty more, data quantity is also more, makes network carrying data quantity significantly increase, and the general networking capacity can't have been loaded user's demand; And, ardent such as instant application such as the networking telephone, video conference and video on demand (VoIP) demand, the legacy network transfer function also can't be handled, thereby needs the wideband multi-media network of energy instantaneous transmission bulk information to support, and can satisfy the demand of application system.Therefore, promote the important topic that network transfer speeds becomes the Internet long term growth already.
The network speed direction of improvement is rough to be divided into three directions: (1) utilizes original network system with vast connection object of having set up, technique improvement in addition, enable to provide transmittability at a high speed, the main example that develops into digital user loop (xDSL) system, utilize traditional telephone network system, as data transmission at a high speed; (2) utilizing originally non-is the system of computer network, new technology and equipment are provided, enable as information network at a high speed, with coaxial cable modem (Cable Modem) and Hybrid Fiber Coaxial network (Hybrid Fiber Coaxial, HFC) develop into main example, utilize catv line, as data transmission at a high speed, to carry out the video on demand service; (3) development new technology, so that the information system of high-speed transfer to be provided, as synchronous transmission mode (Asynchronous Transfer Mode, ATM), Ethernet (Fast Ethernet) is main example with ultrahigh speed networking (GIGA Switch) fast.
XDSL is along with Internet is flourish, and the frequency range that telephone operator experiences user's request increases day by day, and actively promotes the network architecture and the competition that the service of integration data network is provided from cable TV.Nineties early stage, the telephone operator of the U.S. focused on the merger CNN with management tactics, even the cable TV cause of managing over strait, was nothing but high popularity rate and the wideband network of taking a fancy to cable TV, but but ignored the value of self huge twisted-pair wire net.For telephone operator, utilize the XDSL technology that network service at a high speed is provided on existing telephone line, be only the most realistic niche of development wideband network service.XDSL is the general name of a technology, as far back as the later stage in 1980 by Bellcore and AT﹠amp; T develops out, mainly is the modulation tech with different stratum of a new generation, and the high-speed data transmission service is provided on traditional twisted pair telephone line.
DSL is the abbreviation of Digital Subscriber Line English, just digital user loop.Often use the people of network all to know, the signal of network processes and transmission is a digital information, and the telephone wire of usual dialing is an analog line, can only transmit similarly is the analog signal of voice and so on, by telephone wire online just must by means of modem (Modulator-Demodulator, Modem), the digital signal of computer is changed into analog signal, defeated in phone line then, so this has just produced the DSL technology.Because DSL directly is modulated at digital signal on the telephone wire, not through analog/digital conversion, so can obtain frequency bandwidth and the speed more high than general data machine.At present, 56Kbps has been hump speed on ordinary telephone line.Therefore, the DSL technology is a kind of advanced person's a modulation tech, and it is to insert dsl data machine (DSL Modem) respectively at the two ends of copper twisted pairs (being ordinary telephone line), utilizes the high frequency bandwidth characteristic of digital signal, carries out high speed transmission data.As disposed the separator of separating audio frequency band and high frequency band, then can provide phone and high-speed information business simultaneously.
The member of xDSL family comprises: High Data Rate Digital Subscriber Line (High bit rate DSL, HDSL), Asymmetrical Digital Subscriber Line (Asymmetric DSL, ADSL), symmetrical figure user loop (SymmetricDSL, SDSL), ISDN digital user loop (ISDN DSL, IDSL) and ultrahigh speed digital subscriber (Veryhigh bit rate DSL, hereinafter to be referred as VDSL), the main difference of these technology is modulating signal technology, transmission speed and distance, and other are as network terminal position and set up the factors of deriving such as expense.VDSL transmission speed in all XDSL families is the fastest, and its down direction is 13 to 55Mbps, and up direction is 1.5 to 2.3Mbps.Because its high bit rate, thus be considered to be fiber-to-the-home (Fiber To Home, FTTH) or optical fiber to (the Fiber To the Curb of community; FTTC) low-cost replacement scheme; The transmission range of this kind asymmetric load mode, be about 300 meters network transmission architecture between from the machine room to user, if prolong its transmission range, can adopt fiber optic network crosspoint (Optical Network Unit, ONU) continuation method uses Connectorized fiber optic cabling from machine room to the fiber optic network crosspoint, the fiber optic network crosspoint is to just using twisted-pair feeder phone copper cash between the user, so, transmitting range can be extended to 1.4 kilometers.But, the platform that does not also have standard at present about every standard of VDSL.
See also as shown in Figure 1, show network transmission architecture and the relevant apparatus thereof of VDSL in the known techniques.The network architecture of VDSL can be divided into local side 11 (Central office, CO), fiber optic network crosspoint 12 (ONU), ustomer premises access equipment (Customer Premises Equipment, CPE); Local side 11 equipment mainly link the terminal that Internet can be considered as VDSL; Local side 11 is connected with fiber optic network crosspoint 12 by fiberoptical networking 111 (OpticalNetwork Unit), comprise switch (Switch) 121 and VDSL modem 13 (VDSL Modem) in the fiber optic network crosspoint 12, connect via service network and various network services by this plant network information, behind VDSL modem 13 modulation data signals, after generally old telephone wire 112 is sent to 13 demodulation of VDSL modem and receives data signal with the data signal utilization behind this modulation, send into user side again, comprise in the ustomer premises access equipment: VDSL modem 13, network interface card 14 (Networ k Interface Card, NIC) and PC 15 (PC); After data signal after separating modulation is sent to ustomer premises access equipment, modulation via VDSL modem 13 is reduced to 15 information that can receive of PC, by network interface card 14 PC 15 is sent in data signal conversion (analog/digital conversion) via Network transmission line 113 again.It is also identical to the method for local side 11 to transmit data signal by PC 15.As mentioned above in the known techniques, though the VDSL framework can use existing telephone network winding thread to transmit data signal, suitable convenience on network layout, and reach the transmission range of about 3000-4000 foot and the transmission rate of about 26MbpS; So, its shortcoming be VDSL modem device cost too costliness also can't popularize, and too old telephone transmission line can reduce the transmission rate of data signal.So the invention provides a kind of long-distance network transmission architecture and relevant apparatus thereof, increase data signal in the distance of transmission over networks and the transmission rate of network data signal, effectively reduce the cost of network transmission architecture simultaneously, and make that the construction of network transmission architecture is convenient, to increase the popularity rate that the general common people install this system.
Summary of the invention
Main purpose of the present invention, be to provide a kind of long-distance network transmission architecture and relevant apparatus thereof, utilization has the repeater of DSP PHY and cooperates CAT 5 Network transmission lines, make it increase the distance of network data signal transmission, by the present invention can be 400 meters with data signal transmission range lengthening, and device levels that needn't the limited subscriber end.
A time purpose of the present invention is to improve the transmission speed of long-distance network transmission architecture, transmission speed can be increased to the business opportunity of 100Mbps in order to following wideband market by the present invention.
A further object of the present invention, because long-distance network transmission architecture of the present invention and relevant apparatus thereof have reduced VDSL modem device in the known techniques, and cooperate existing Network Transmission line architecture and the original hardware device of user side, its expense in this system of installing can be reduced greatly, use in order to mass society masses' installing.
For reaching above-mentioned purpose, a kind of long-distance network transmission architecture of the present invention comprises: a network exchange unit, in order to exchange the data signal between one first network and one second network; And a repeater, have one first end interface, be connected with the aforementioned network crosspoint through one first Network transmission line, and one second end interface, be connected with a ustomer premises access equipment through one second Network transmission line; Wherein, this first end interface has the physical layer device of a Digital Signal Processing, handles by the signal that is received on aforementioned first Network transmission line by Digital Signal Processing.
Aforementioned first Network transmission line can be supported the power supply supply.The first end interface is supported the full duplex data and is passed receipts.First Network transmission line is a CAT 5 Network transmission lines.CAT 5 Network transmission lines have 4 pairs of transmission lines, and wherein 2 pairs of transmission lines are supported the power supply supply, and 2 pairs of transmission lines are supported full duplex data biography receipts in addition.
The present invention also provides a kind of repeater, comprises: one first end interface, and the physical layer device with a Digital Signal Processing is connected with a network exchange unit through one first Network transmission line; And one second end interface, have a physical layer device, be connected with a ustomer premises access equipment through one second Network transmission line; Wherein the Digital Signal Processing physical layer device at this first end interface is handled by the signal that is received on aforementioned first Network transmission line by Digital Signal Processing.
First Network transmission line and aforementioned second Network transmission line are all CAT 5 Network transmission lines.First Network transmission line has 4 pairs of transmission lines, and wherein 2 pairs of transmission lines are supported the power supply supply, and 2 pairs of transmission lines are supported full duplex data biography receipts in addition.Second Network transmission line has 4 pairs of transmission lines, and wherein 2 pairs of transmission lines are supported the power supply supply, and 2 pairs of transmission lines are supported full duplex data biography receipts in addition.
Long-distance network transmission architecture of the present invention and relevant apparatus thereof will have plurality of advantages and feature, wherein the present invention has increased data signal in the distance of transmission over networks and the transmission rate of network data signal, wherein the data signal transmission rate is two-way 100Mbps, and transmission range reaches 300 to 400 meters; The present invention simultaneously can effectively reduce the cost of network transmission architecture, can both save hardware cost for network communication dealer and user, and make that the construction of network transmission architecture is convenient, to increase the popularity rate that the general common people install this system.
Description of drawings
Fig. 1 is a known techniques VDSL network transmission architecture schematic diagram;
Fig. 2 is a long-distance network transmission architecture schematic diagram of the present invention;
Fig. 3 is the inner basic framework of the repeater of long-distance network transmission architecture of the present invention.
Embodiment
Because in the known techniques, in the VDSL network transmission architecture, since VDSL any data signal that is transmitted on the telephone line all must be earlier via the VDSL modem with the data signal modulation on telephone line, can under high speed, transmit in order to the VDSL data signal, but because the cost of VDSL modem is too high, so that can't popularize in general user.The present invention proposes a kind of long-distance network transmission architecture and relevant apparatus thereof then, the repeater of wafer that its utilization has the physical layer device (DSP PHY) of Digital Signal Processing cooperates CAT 5 Network transmission lines, to promote the long-range network transmittability, replace known techniques and use the VDSL modem, and device and the Network Transmission wiring that need not change user side just can obtain long data signal transmission range and obtain good high-speed transfer speed, reduce the installing cost of long-distance network transmission architecture system simultaneously.
Long-distance network transmission architecture of the present invention and relevant apparatus thereof, its plurality of advantages and feature will and appendedly be further understood graphic from following detailed description.
At first please refer to shown in Figure 2ly, it shows long-distance network transmission architecture figure of the present invention.At first introduce among the present invention by the Organization Chart of local side 11 to one of the transmission mode of user side specific embodiment, its framework comprises: a local side 11 equipment, in order to be connected with network exchange unit 21 by Network transmission line; One network exchange unit 21 wherein comprises: a medium access unit 211 (MAC) and has the physical layer device (DSP PHY) 212 of digital signal processing capability, by DSP PHY 212 data signal on the network is urged to CAT 5 Network transmission lines 213; (Category 5 for one CAT 5, CAT 5) Network transmission line 213, be used to connect the Network transmission line between network exchange unit 21 and repeater 22 and repeater 22 and user side, wherein the transmission line 213 between 22 of network exchange unit 21 and repeaters can transmit power supply, and the aforesaid data signal is sent in the repeater 22 through CAT 5 Network transmission lines 213; One repeater (Repeater) 22, obtain power supply via CAT 5 Network transmission lines that connect network exchange unit 21, and the Digital Signal Processing (DSP) by repeater 22 inside is again with after the reduction of aforesaid data signal integer, be sent in the user side via another CAT 5 Network transmission lines 213, wherein user side comprises: a network interface card 14 and PC 15, network interface card 14 is used for receiving the data signal on the network.
Further describe the transmission method of long-distance network transmission architecture of the present invention, the base program that is comprised: in a network exchange unit 21, substitute VDSL modem 13 in detail with the physical layer device (DSP PHY) 212 that utilizes Digital Signal Processing; One repeater 22 is provided between aforementioned network crosspoint 21 and ustomer premises access equipment, and aforementioned repeater 22 utilizes special modulation tech and Digital Signal Processing with the physical layer device 212 that aforementioned network crosspoint 21 is connected, and passes with the network of growing distance and receives; And support power supply supply and the transmission of full duplex data on the transmission line that between aforementioned repeater 22 and aforementioned network crosspoint 21, is connected, wherein, in preferred embodiment of the present invention, the transmission of support power supply supply and full duplex data can be adopted CAT 5 Network transmission lines 213 on transmission line, because CAT 5 Network transmission lines 213 provide 4 pairs of transmission lines at present, the 2 pairs of transmission lines are supported the transmission of full duplex data, and other 2 pairs of transmission lines are on the shelf and can be used to support the power supply supply.
Please consult shown in Figure 2 again, network exchange unit 21 mainly comprises the physical layer device (DSP PHY) 212 that medium access unit 211 and has Digital Signal Processing, and network exchange unit 21 mainly is responsible for providing community users can reach many families and is used the function that exchanges between network and networking simultaneously; In this embodiment, local side 11 will be sent to signal long user apart from those ends, can utilize special modulation (Modulation) technology to grow Distance Transmission, this special modulation tech is different different because of the technology of each manufacturer, for example utilize similar Gigabit modulation tech or the like, belonging to has the technology of both having deposited, and can be understood by the skill personage, does not repeat them here.And signal can suffer serious disturbance and decay after long Distance Transmission, and receiving terminal must be engaged in just it can being got also (Retrieve) by Digital Signal Processing.
Generally speaking, be about 26Mbps via its speed of digital signal behind the VDSL modem modulation, transmitting range be the 3000-4000 foot.And for signal after about 300 meters long Distance Transmission, the decay of signal is very serious and be difficult for getting also.The physical layer device (DSPPHY) 212 that utilization of the present invention has a digital signal processing capability by special modulation tech with the data signal modulation on Network transmission line, and utilize the digital signal modulation tech with the data signal shaping reduction that decays on the network, its transmission rate information can reach two-way 100Mbps, transmission range can reach 300 to 400 meters, makes that can grow distance on the transmission line transmits than VDSL more at a high speed and the data signal of high power capacity.But, on general old telephone wire, can't transmit the data signal of high speed like this and high power capacity, so the present invention utilizes CAT 5 Network transmission lines 213 to be used as network exchange unit 21 and repeater 22, and the transmission line between repeater 22 and user side; Preferably, the power supply of repeater 22 is obtained via CAT 5 Network transmission lines 213 connection network exchange unit 21.
CAT 5 Network transmission lines 213 are a kind of common transmission lines, its low price and 100Mbps can be provided above transmission rate; With present situation, in the community or building of general new construction, all use this CAT 5 Network transmission lines 213 cheaply; Because CAT 5 Network transmission lines 213 have bigger transmitting bandwidth, its transfer rate is fast, so be suitable for very much full duplex data signal transmission line in the long-distance network transmission architecture of the present invention; Again, CAT 5 Network transmission lines 213 another advantage are, owing to have four pairs of transmission lines in CAT 5 Network transmission lines 213 at present, only there are at present two pairs of transmission lines to be used for for doing illustrated as described above full duplex data signal transmission line, other two pairs of circuits are then on the shelf, so, the present invention utilizes this transmission line on the shelf to support power supply supply (Carry Power), the transmission power supply uses with the power supply that repeater 22 is provided, thus, can allow CAT 5 Network transmission lines 213 make full use of, also reduce simultaneously the volume of repeater 22 and do not need to increase extra power supply supply, make install also very convenient.
As above-mentioned, the data signal that network exchange unit 21 is sent out is delivered in the repeater 22 after transmitting via CAT 5 Network transmission lines 213; Because data signal is after the transmission through 300 meters long distances among the present invention, signal itself is understood weak gradually and very serious drift and distortion is taken place, user side can't identification be got also this data signal, so after the necessary demodulation and modulation, the aforesaid data signal could be sent into user side through repeater 22 Digital Signal Processing.See also as shown in Figure 3, show the inside structure of repeater of the present invention.Repeater 22 of the present invention comprises: one first end interface, CAT5 Network transmission line 213 through a long distance (can reach about 300 to 400 meters) is connected with a network exchange unit 12, and these CAT 5 Network transmission lines 213 can be supported power supply supply and the transmission of full duplex data, and the first end interface is the physical layer device (DSP PHY) 212 with Digital Signal Processing; And one second end interface, be connected with ustomer premises access equipment through another transmission line, can be general physical layer device 214 or DSP PHY.In an embodiment of the present invention, repeater 22 is connected via long distance C AT 5 Network transmission lines 213 with network exchange unit 21, so the first end interface utilizes on these DSP PHY 212 to CAT 5 Network transmission lines 213 drift or the reduction of the data signal integer of distortion, make its data signal can be by device institute identification thereafter; The first end interface of repeater 22 can pass the data signal of receiving on the long distance network transmission line; And the second end interface of repeater 22 is not limited to the enforcement of DSP PHY, and the data signal that preferably meets general physical layer device (PHY) institute modulation gets final product.
Please continue to consult as shown in Figure 3, having two pairs of Network transmission lines to can be used to transmit power supply in aforementioned CAT 5 Network transmission lines 213 uses so that repeater 22 to be provided, so have the ability that to handle the power supply supply with the first end interface of a side that network exchange unit 21 is connected in the repeater 22 of the present invention, with the use of power supply in the supply repeater 22; The aforesaid data signal is sent to this data signal among the PHY 214 after reducing via DSP PHY 212 shapings again, because, commercially available network interface card 14 has its certain data transmission standard and specification, if change the specification of its formulation is comparatively infeasible, so via the data signal after the DSP PHY 212 shapings reduction again by general second too physical layer device (PHY) 214 modulations of network become PHY in the network interface card 14 the data signal of energy identification, for the people of this system of use, promptly do not need to go again to change the network interface card 14 in the PC 15, user side can keep original hardware device, and needn't cooperate long-distance network transmission architecture of the present invention with 14 device upgrades of network interface card, effectively reduce the user the expense that must pay, and can be acceptant by market.
In general, in order to make community or building monolithic architecture beyond the region of objective existence portion keep attractive in appearance and not to be damaged, so repeater more than 22 is arranged in the power transformation case in community or building, and repeater 22 required power supplys are direct current, different with the alternating current of general civil power, so when using civil power, must manage to obtain the alternating-current power supply of civil power earlier in context, be converted to DC power supply again after, could supply repeater 22 and use.So, the inner usage space of the distribution box in community or building is limited, and not only installing is difficult for, power supply is obtained inconvenience, and if it will be installed in the distribution box, its volume inside can be too crowded, and cause danger; So the present invention utilizes the wherein idle Network transmission line of CAT 5 Network transmission lines 213 to transmit repeater 22 needed power supplys, so can reduce the manufacturing cost and the volume of repeater 22, and make repeater 22 be provided with the position be more prone to, convenient.
Behind the signal by 214 modulations of PHY in the repeater 22, be sent to user side via CAT 5 Network transmission lines 213 again, because the data signal of this moment has been the data signal of 14 energy identifications of network interface card, so the user only need prepare a CAT 5 Network transmission lines 213, one end and network interface card 14 link, PC 15 can be used long-distance network transmission architecture of the present invention by socket card 14, this moment, user side just no longer needed to install additional the expensive VDSL modem as known, perhaps upgrade the modem of any correspondence, reach the purpose of a large amount of transmission of long distance; Also do not need simultaneously the extra power supply supply user of many increases more convenient when installing this system.
The above embodiment only is explanation technological thought of the present invention and characteristics, its purpose makes the personage who has the knack of this skill can understand content of the present invention and is implementing according to this, and the present invention also is not subject to the embodiment of specification, for example: in long-distance network transmission architecture of the present invention and the relevant apparatus thereof, repeater itself can use the external power source that is sent by the network exchange unit end, also or the power supply that is provided by repeater itself.
Claims (16)
1. long-distance network transmission architecture is characterized in that comprising:
One network exchange unit is in order to exchange the data signal between one first network and one second network; And
One repeater has one first end interface, is connected with the aforementioned network crosspoint through one first Network transmission line, and one second end interface, be connected with a ustomer premises access equipment through one second Network transmission line;
Wherein, the described first end interface has the physical layer device of a Digital Signal Processing, handle by the signal that is received on aforementioned first Network transmission line by Digital Signal Processing, and aforementioned first Network transmission line provides power supply to be supplied to aforementioned repeater.
2. long-distance network transmission architecture as claimed in claim 1 is characterized in that: the described first end interface is supported the full duplex data and is passed receipts.
3. long-distance network transmission architecture as claimed in claim 1 is characterized in that: aforementioned first Network transmission line is a CAT 5 Network transmission lines.
4. long-distance network transmission architecture as claimed in claim 3 is characterized in that: aforementioned CAT 5 Network transmission lines have 4 pairs of transmission lines, and wherein 2 pairs of transmission lines are supported the power supply supply, and 2 pairs of transmission lines are supported full duplex data biography receipts in addition.
5. long-distance network transmission architecture as claimed in claim 3 is characterized in that: the length of aforementioned CAT 5 Network transmission lines is above 300 meters.
6. long-distance network transmission architecture as claimed in claim 1 is characterized in that: aforementioned ustomer premises access equipment comprises a network interface, and this network interface connects second Network transmission line at the aforementioned second end interface.
7. long-distance network transmission architecture as claimed in claim 1 is characterized in that: the aforementioned second end interface comprises a physical layer device.
8. long-distance network transmission architecture as claimed in claim 1 is characterized in that: aforementioned second Network transmission line is a CAT 5 Network transmission lines.
9. long-distance network transmission architecture as claimed in claim 1, it is characterized in that: the interface that the aforementioned network crosspoint connects aforementioned first Network transmission line comprises the physical layer device of a Digital Signal Processing, handles by the signal that is received on this first Network transmission line by Digital Signal Processing.
10. repeater is characterized in that comprising:
One first end interface, the physical layer device with a Digital Signal Processing is connected with a network exchange unit through one first Network transmission line; And
One second end interface has a physical layer device, is connected with a ustomer premises access equipment through one second Network transmission line;
The Digital Signal Processing physical layer device at the wherein said first end interface is handled by the signal that is received on aforementioned first Network transmission line by Digital Signal Processing, and aforementioned first Network transmission line provides power supply to be supplied to aforementioned repeater.
11. repeater as claimed in claim 10 is characterized in that: aforementioned first Network transmission line and aforementioned second Network transmission line are all CAT 5 Network transmission lines.
12. repeater as claimed in claim 10 is characterized in that: aforementioned first Network transmission line has 4 pairs of transmission lines, and wherein 2 pairs of transmission lines are supported the power supply supply, and 2 pairs of transmission lines are supported full duplex data biography receipts in addition.
13. repeater as claimed in claim 10 is characterized in that: aforementioned second Network transmission line has 4 pairs of transmission lines, and wherein 2 pairs of transmission lines are supported the power supply supply, and 2 pairs of transmission lines are supported full duplex data biography receipts in addition.
14. repeater as claimed in claim 10 is characterized in that: aforementioned first end interface and the aforementioned second end interface are supported the full duplex data and are passed receipts.
15. repeater as claimed in claim 10 is characterized in that: the length of aforementioned first Network transmission line surpasses more than 300 meters.
16. repeater as claimed in claim 10, it is characterized in that: the interface that the aforementioned network crosspoint connects aforementioned first Network transmission line comprises the physical layer device of a Digital Signal Processing, handles by the signal that is received on this first Network transmission line by Digital Signal Processing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021061319A CN100391218C (en) | 2002-04-04 | 2002-04-04 | Long-distance network transmission architecture and relevant equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB021061319A CN100391218C (en) | 2002-04-04 | 2002-04-04 | Long-distance network transmission architecture and relevant equipment |
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| CN1375984A CN1375984A (en) | 2002-10-23 |
| CN100391218C true CN100391218C (en) | 2008-05-28 |
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| TWI459758B (en) * | 2012-05-23 | 2014-11-01 | Pixord Corp | Vdsl network system and a vdsl repeater thereof |
| CN106788743A (en) * | 2016-12-19 | 2017-05-31 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of fiber buss network system of photoelectricity mixed architecture |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6236664B1 (en) * | 1999-06-04 | 2001-05-22 | Terayon Communications Systems, Inc. | Pair gain system with an ADSL repeater unit |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6236664B1 (en) * | 1999-06-04 | 2001-05-22 | Terayon Communications Systems, Inc. | Pair gain system with an ADSL repeater unit |
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