CN1459972A - High speed transmission digital user loop modulator demodulator - Google Patents
High speed transmission digital user loop modulator demodulator Download PDFInfo
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- CN1459972A CN1459972A CN02120260A CN02120260A CN1459972A CN 1459972 A CN1459972 A CN 1459972A CN 02120260 A CN02120260 A CN 02120260A CN 02120260 A CN02120260 A CN 02120260A CN 1459972 A CN1459972 A CN 1459972A
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Abstract
A VDSL modem has a VDSL port, multiple Ethernet adapters, a traffic controller, a transceiver, a transmission unit and a controller. The said multiple Ethernet adapter can ensure multiple users to connect VDSL at the same time.
Description
Technical field
The present invention is relevant for a kind of high speed transmission digital user loop modulator demodulator, especially about a kind of high speed transmission digital user loop modulator demodulator with a high speed transmission digital user loop connectivity port and a plurality of LAN connectivity port.
Background technology
Digital user loop (Digital Subscriber Line, hereinafter referred is xDSL) allows transmission lot of data service profile on traditional narrow frequency acoustic network.
High speed transmission digital user loop (Very high bit rate Digital Subscriber Line, hereinafter referred VDSL) is the technology of can be on the common short-range phone copper cash the highest rate transmissioning data with 52Mbps of a kind of xDSL technology, its speed is far above Asymmetric Digital Subscriber Line (Asymmetric Digital Subscriber Line, be called for short ADSL) and cable modem (Cable Modem), be equivalent to the message transmission rate of T3.It can provide between the LAN network and connect fast, and can be used to multi-medium datas such as transmit video audio frequency and High Resolution image.
VDSL and ADSL are similar, be the asymmetric transmission, under pass speed and can reach 13～52Mbps, uploading rate can reach 1.5～2.3Mbps, following as using the network wiring system of 10BaseS, can make down biography and uploading rate all reach 2～26Mbps, the transmission rate of VDSL is 10 times of ADSL, but transmission range is than short many of ADSL, and the transmission range of VDSL is no more than 2 kilometers approximately farthest.VDSL adopts the frequency division transmission manner, the uplink and downlink signal is placed in the different frequency bands transmits, low-frequency band transmission traditional telephone service package, the midband control information transmission, image or high-speed data information that the high frequency band transmission is descending, transmitting terminal is modulated to different frequency range with various signal, sees through Fiber Node through twisted-pair feeder and is linked to client with copper stranded conductor.
VDSL mainly adopts discrete multiple sound, and (Discrete Multi-Tone, DMT) modulation system are utilized a pair of twisted-pair feeder transmission.VDSL system and ADSL system class are seemingly, at client configuration VDSL modulator-demodulator, the telephone service signal sees through plain old telephone service (POTS) separator and coupler adds channel, (High-Definition Television, HDTV) the imagery exploitation VDSL down channel behind digital picture or the multichannel MPEG compressed encoding is delivered to client to hd-tv.VDSL also can cooperate with optical networking, and (OpticalNetwork Unit, ONU) to the distribution between the user, (Fiber-to-the-Curb FTTC) provides the wideband service for enterprise customer and family to perimeter network to see through optical fiber as optical network unit.
See also Fig. 1, Fig. 1 is the inside structure schematic diagram of traditional high speed transmission digital user loop modulator demodulator.Traditional VDSL modulator-demodulator 100 comprises LAN connectivity port 102, high speed transmission digital user loop (being called for short VDSL down) connectivity port 104, Public Switched Telephone Network (being called for short PSTN down) connectivity port 106, R-T unit 108, frequency divider 110, transmitting device 112 and package processing unit 114.
It is connected to Ethernet 122 for Ethernet (Ethernet) connectivity port in LAN connectivity port 102, and receives the local package of delivering to from Ethernet 122, and it is reached package processing unit 114.Package processing unit 114 is handled the local package that receives by on the LAN 122, it is sent to transmitting device 112 again.The local package that transmitting device 112 will receive reaches R-T unit 108 and controls the flow of the local package that reaches R-T unit 108.R-T unit 108 is couple to VDSL connectivity port 104, also be couple to PSTN connectivity port 106 through frequency divider 110, R-T unit 108 sends local package to high speed transmission digital user loop 124 or Public Switched Telephone Network 126 according to signal frequency in the local package through VDSL connectivity port 104 or PSTN connectivity port 106.
PSTN connectivity port 106 is couple to R-T unit 108 through frequency divider, receives the long-range package of delivering to from Public Switched Telephone Network 126, and should be sent to this R-T unit 108 by long-range package.VDSL connectivity port 104 receives the long-range package of delivering to from high speed transmission digital user loop 124, and should be sent to this R-T unit 108 by this long-range package.R-T unit 108 receives from PSTN connectivity port 106 and the long-range package that reaches from VDSL connectivity port 104, and it is sent to transmitting device 112.The flow of the long-range package that transmitting device 112 control reaches from transmitting-receiving assembling device 108 and after an error return program should be delivered to package processing unit 114 by long-range package again.Package processing unit 114 is processed into long-range package can distinguish the package of looking for LAN, again this package is delivered on the Ethernet 122 through LAN connectivity port 102.
Yet, known VDSL modulator-demodulator 100 only has a LAN connectivity port (Ethernet port) usually, client can only be connected on the high speed transmission digital user loop (VDSL) by LAN through the device that can surf the Net, but only providing a LAN connectivity port to want the user only to use a device that can connect to network between at the same time is not enough for present network user, when present network user connects the desktop PC of VDSL in use, may also view and admire hd-tv (HDTV) or dial visual telephone etc. through random selection video system simultaneously by use world-wide web voice protocol, at this moment, client then needs a plurality of LAN connectivity port to satisfy user's demand at one time.
In view of this, the invention provides a kind of high speed transmission digital user loop modulator demodulator (VDSL modem), it has a high speed transmission digital user loop connectivity port (VDSLport) and a plurality of LAN connectivity port (LAN port), the a plurality of LAN connectivity port that is provided, but the single user of chien shih connects high speed transmission digital user loop by a plurality of Internet devices at the same time, enjoy multiplely, satisfy user's demand whereby by the service that high speed transmission digital user loop provided.
For reaching above-mentioned purpose, the invention provides a kind of high speed transmission digital user loop modulator demodulator, it delivers to a high speed transmission digital user loop with the local package of plural number from plural LAN, and with the long-range package of plural number from delivering to above-mentioned LAN from this high speed transmission digital user loop, it comprises: plural LAN connectivity port, in order to receive the local package that above-mentioned LAN delivers to and to transmit above-mentioned long-range package in above-mentioned LAN; One high speed transmission digital user loop connectivity port, in order to receive the long-range package of delivering to from this high speed transmission digital user loop and to transmit above-mentioned local package to this high speed transmission digital user loop one volume control device, be couple to above-mentioned LAN connectivity port, the flow of the local package that receives from above-mentioned LAN connectivity port in order to control and distribution desire to deliver to the flow of the long-range package of above-mentioned LAN connectivity port; One R-T unit is couple to this high speed transmission digital user loop connectivity port, in order to receive the long-range package of sending here from this high speed transmission digital user loop connectivity port and to send above-mentioned local package to this high speed transmission digital user loop connectivity port; One transmitting device, be coupled between this R-T unit and this volume control device, in order to receive the local package that reaches from this volume control device, behind a signal handler, make farther that this this locality package can pass, and control reaches the flow of the local package of this R-T unit, and the flow of the long-range package that reaches from this transmitting-receiving assembling device of control, after an error return program, and above-mentioned long-range package delivered to this volume control device; And a control device, be coupled between this volume control device and this transmitting device, in order to management this volume control device of control and this transmitting device.Wherein above-mentioned LAN can be Ethernet or Fast Ethernet, and above-mentioned LAN connectivity port can be connected to a random selection video system (Video On Demand through Ethernet connecting line or Fast Ethernet connecting line, VOD), a world-wide web voice protocol (Voice over Internet Protocol, but VoIP) system, a fixed personal computer, a portable electronic equipment and other Internet device.
In addition, above-mentioned high speed transmission digital user loop modulator demodulator more comprises a Public Switched Telephone Network connectivity port and a frequency divider.This Public Switched Telephone Network connectivity port is couple to this R-T unit, in order to receive the long-range package of delivering to from a Public Switched Telephone Network, and should be sent to this R-T unit by long-range package, and receive the local package that reaches from this R-T unit, and should be sent to this Public Switched Telephone Network by this locality package.This frequency divider is coupled between this R-T unit and this high speed transmission digital user loop connectivity port and this Public Switched Telephone Network connectivity port, behind the local package frequency division that this R-T unit is reached, send to this high speed transmission digital user loop connectivity port and this Public Switched Telephone Network connectivity port according to frequency, and will be from the long-range package of this high speed transmission digital user loop connectivity port and the reception of this Public Switched Telephone Network connectivity port.
To state with other purpose, feature and advantage and can become apparent on the present invention in order to allow, a preferred embodiment cited below particularly, and cooperate appended icon, elaborate.
Description of drawings
Fig. 1 is the inside structure schematic diagram of traditional high speed transmission digital user loop modulator demodulator.
Fig. 2 is the inside structure schematic diagram of the high speed transmission digital user loop modulator demodulator of the embodiment of the invention.
Fig. 3 is the schematic appearance of the high speed transmission digital user loop modulator demodulator of the embodiment of the invention.Symbol description:
100～traditional high speed transmission digital user loop modulator demodulator
200,300～high speed transmission digital user loop modulator demodulator
122～Ethernet 124,224～high speed transmission digital user loop
126,226～Public Switched Telephone Network
102,202a～202d, 302a～302d～LAN connectivity port
104,204,304～high speed transmission digital user loop connectivity port
106,206,306～Public Switched Telephone Network connectivity port
108,208～R-T unit 110,210～frequency divider
112,212～transmitting device, 114～package processing unit
214～volume control device, 216～central processing unit
234～world-wide web voice protocol system, 232～random selection video system
236～desktop PC, 238～mobile computer
Embodiment
The present invention discloses a kind of high speed transmission digital user loop modulator demodulator with a high speed transmission digital user loop connectivity port and a plurality of LAN connectivity port, it provides a plurality of LAN connectivity port, so that the user can use a plurality of devices that connect high speed transmission digital user loop at one time, enjoy multiplely, satisfy user's demand whereby by the service that high speed transmission digital user loop provided.In addition, random selection video system (VOD), world-wide web voice protocol (VoIP) but system, fixed personal computer, portable electronic equipment and other Internet device all can be connected in disclosed a plurality of LAN connectivity port through the local area network (LAN) winding thread, connect high speed transmission digital user loop whereby.Below cooperate icon, describe embodiments of the invention in detail.
Fig. 2 is the inside structure schematic diagram of the high speed transmission digital user loop modulator demodulator of the embodiment of the invention.High speed transmission digital user loop modulator demodulator 200 of the present invention is used for the network wiring system of 10BaseS, it can make the following biography of VDSL and uploading rate all reach 2～26Mbps, in addition, when utilizing the data information of network wiring system transmissions VDSL of 10BaseS, maximum transmitting range is between 1.35 kilometers to 2.0 kilometers.High speed transmission digital user loop modulator demodulator 200 of the present invention comprises: four LAN connectivity port 202a～202d, 204, Public Switched Telephone Network connectivity ports, a high speed transmission digital user loop connectivity port (being called for short the VDSL connectivity port down) (being called for short the PSTN connectivity port down) 206, R-T unit 208, frequency divider 210, transmitting device 212, a volume control device 214 and central processing unit 216.
In this embodiment, it is Fast Ethernet (Fast Ethernet) connectivity port that LAN connectivity port 202a～202d connects different LAN system LAN connectivity port 202a, 202b, and LAN connectivity port 202c, 202d are Ethernet (Ethernet) connectivity port.LAN connectivity port 202a is connected to random selection video system (Video On Demand through Fast Ethernet winding thread (not shown), be designated hereinafter simply as VOD) 232, VOD can allow the user utilize world-wide web (Internet) promptly to utilize the VDSL network freedom to select video information at this, allows Video service can really be consumer's custom-made by size.LAN connectivity port 202b is connected to world-wide web voice protocol system (hereinafter to be referred as VoIP system) 234 through Fast Ethernet winding thread (not shown), VoIP is that a kind of open network (Network) that utilizes promptly utilizes the agreement of VDSL Network Transmission audio and video at this, the voice signal that utilizes package (Packet) to change provides session services, just as using network transmission information, voice Real-time Transmission on the network makes the speech communication of no transmission delay become possibility, and connect the VDSL network with traditional phone line, can save many telephone chargess, no matter get to any one corner in the world, all need only burden expenses of surfing Internet and local telephone expense, so the user uses VoIP system can save the writing expenditure whereby.LAN connectivity port 202c is connected to desktop PC 236 through Ethernet winding thread (not shown).LAN connectivity port 202d is connected to mobile computer 238 through Ethernet winding thread (not shown).
Each LAN connectivity port 202a～202d connects different LAN system and to receive the local package of delivering to from different LAN system it is reached volume control device 214, can be 10Mbps or 100Mbps so send into the speed of local package from each LAN connectivity port, therefore volume control device 214 controls are sent to it transmitting device 212 again from the flow of the local package of above-mentioned LAN connectivity port 202a～202d reception.
The local package that transmitting device 212 will receive makes farther that this this locality package can pass through a signal handler, and this signal handler makes the effective transmitting range of local package can increase to 1.35 also can reach 2 kilometers farthest.Then, local package is reached R-T unit 208, transmitting device 212 is also controlled the flow of the local package that reaches R-T unit 208, and the speed of delivering to the local package of R-T unit 208 is maintained 12.5Mbps.R-T unit 208 is couple to VDSL connectivity port 204, also be couple to PSTN connectivity port 206 through frequency divider 210, R-T unit 208 sends local package to high speed transmission digital user loop 224 or Public Switched Telephone Network 226 according to signal frequency in the local package through VDSL connectivity port 204 or PSTN connectivity port 206, be low-frequency band transmission for example: from the telephone service package that is loaded with voice signal among the 202b of LAN connectivity port to being Public Switched Telephone Network 226, midband transmission as: from the control information package that is loaded with the random selection video system control signal among the 202a of LAN connectivity port to high speed transmission digital user loop 224, and the high frequency band transmission as: from the package that is loaded with high-speed data information among LAN connectivity port 202c and the 202d to high speed transmission digital user loop 224.
PSTN connectivity port 206 is couple to R-T unit 208 through frequency divider 210, receives the long-range package of delivering to from Public Switched Telephone Network 226, and should be sent to this R-T unit 208 by long-range package.VDSL connectivity port 204 receives the long-range package of delivering to from high speed transmission digital user loop 224, and should be sent to this R-T unit 208 by this long-range package.R-T unit 208 receives from PSTN connectivity port 206 and the long-range package that reaches from VDSL connectivity port 204 (this long-range package can for the package that is loaded with voice signal, be loaded with the package that selects vision signal or be loaded with the package of high-speed data information), and it is sent to transmitting device 212.The flow of the long-range package that transmitting device 212 control reaches from transmitting-receiving assembling device 208, and after an error return program, should deliver to volume control device 214 by long-range package again, this error return program comprises the wrong of this long-range package of detecting and the mistake of replying this long-range package.Volume control device 214 is processed into long-range package can distinguish the package of looking for LAN network system, again inhomogeneous long-range package is delivered in the different LAN system through different LAN connectivity ports, deliver to LAN connectivity port 202b as the package that will be loaded with voice signal, reach VoIP system 234 through the Fast Ethernet winding thread again; The package that is loaded with vision signal is delivered to LAN connectivity port 202a, reach VOD system 232 through the Fast Ethernet winding thread again; And the package that will be loaded with high-speed data information delivers to LAN connectivity port 202c and 202d, reaches respectively in desktop PC 236 or the mobile computer 238 through the Ethernet winding thread again.
Central processing unit 216 is coupled between volume control device 214 and the transmitting device 212, in order to management control flows amount control device 214 and transmitting device 212.Central processing unit 216 by control flows amount control device 214 to keep the normal operation of LAN connectivity port 202a～202d.Whether central processing unit 216 detecting LAN connectivity port 202a～202d make a mistake, when make a mistake in any one LAN connectivity port, can realize in real time, and take as: stop the running of this wrong LAN connectivity port or correct this wrong necessary operation such as LAN connectivity port.Central processing unit 216 also (transmits the package that is loaded with sound and vision signal usually and has higher priority by the priority of control flows amount control device 214 setting LAN connectivity port 202a～202d, so be higher than the package of LAN connectivity port 202c and 202d transmission by its priority of package of LAN connectivity port 202a and 202b transmission), in order to the transmission of real-time voice to be provided, so the user can enjoy preferable VOD of quality and VoIP service.
In addition, central processing unit 216 is also controlled error return program and the signal handler in this transmitting device.
Fig. 3 is the schematic appearance of the high speed transmission digital user loop modulator demodulator of the embodiment of the invention.As shown in the figure, high speed transmission digital user loop modulator demodulator 300 of the present invention comprises: four LAN connectivity port 302a～302d, high speed transmission digital user loop connectivity port 304, a Public Switched Telephone Network connectivity port 306.
Each LAN connectivity port 302a～302d connects different LAN system, and receives the local package of delivering to from different LAN system, imports high speed transmission digital user loop modulator demodulator 300 into.High speed transmission digital user loop modulator demodulator 300 sends local package to high speed transmission digital user loop or Public Switched Telephone Network according to signal frequency in the local package through high speed transmission digital user loop connectivity port 304 or Public Switched Telephone Network connectivity port 306.
In addition, Public Switched Telephone Network connectivity port 306 will be imported high speed transmission digital user loop modulator demodulator 300 into from the long-range package that Public Switched Telephone Network receives, high speed transmission digital user loop connectivity port 304 will be imported high speed transmission digital user loop modulator demodulator 300 into from the long-range package that high speed transmission digital user loop receives, and high speed transmission digital user loop modulator demodulator 300 is delivered to inhomogeneous long-range package in the different LAN system through different LAN connectivity ports.
In sum, high speed transmission digital user loop modulator demodulator of the present invention, because it provides a plurality of LAN connectivity port, so the user can use a plurality of devices that connect high speed transmission digital user loop at one time, therefore enjoy multiplely, can satisfy user's demand by the service that high speed transmission digital user loop provided.
Though the present invention with preferred embodiment openly as above; right its is not in order to limiting the present invention, anyly is familiar with this operator, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (11)
1. high speed transmission digital user loop modulator demodulator, it delivers to a high speed transmission digital user loop with the local package of plural number from plural LAN, and the long-range package of plural number delivered to above-mentioned LAN from this high speed transmission digital user loop, it is characterized in that: it comprises:
Plural number LAN connectivity port is in order to receive the local package that above-mentioned LAN delivers to and to transmit above-mentioned long-range package in above-mentioned LAN;
One high speed transmission digital user loop connectivity port is in order to receive the long-range package of delivering to from this high speed transmission digital user loop and to transmit above-mentioned local package to this high speed transmission digital user loop;
One volume control device is couple to above-mentioned LAN connectivity port, and local package flow that receives from above-mentioned LAN connectivity port in order to control and distribution desire to deliver to the flow of the long-range package of above-mentioned LAN connectivity port;
One R-T unit is couple to this high speed transmission digital user loop connectivity port, in order to receive the long-range package of sending here from this high speed transmission digital user loop connectivity port and to send above-mentioned local package to this high speed transmission digital user loop connectivity port;
One transmitting device, be coupled between this R-T unit and this volume control device, in order to receive the local package that reaches from this volume control device, behind a signal handler, make farther that this this locality package can pass, and control reaches the flow of the local package of this R-T unit, and the flow of the long-range package that reaches from this transmitting-receiving assembling device of control, after an error return program, and above-mentioned long-range package delivered to this volume control device;
One control device is coupled between this volume control device and this transmitting device, in order to management this volume control device of control and this transmitting device.
2. high speed transmission digital user loop modulator demodulator as claimed in claim 1, it is characterized in that: also comprise a Public Switched Telephone Network connectivity port, it is couple to this R-T unit, in order to receive the long-range package of delivering to from a Public Switched Telephone Network, and should be sent to this R-T unit by long-range package, and receive the local package that reaches from this R-T unit, and should be sent to this Public Switched Telephone Network by this locality package.
3. high speed transmission digital user loop modulator demodulator as claimed in claim 2, it is characterized in that: also comprise a frequency divider, be coupled between this R-T unit and this high speed transmission digital user loop connectivity port and this Public Switched Telephone Network connectivity port, behind the local package frequency division that this R-T unit is reached, send to this high speed transmission digital user loop connectivity port and this Public Switched Telephone Network connectivity port according to frequency, and will be from the long-range package of this high speed transmission digital user loop connectivity port and the reception of this Public Switched Telephone Network connectivity port.
4. high speed transmission digital user loop modulator demodulator as claimed in claim 1 is characterized in that: wherein this signal handler makes the effective transmitting range of this this locality package between 1.35 kilometers to 2.0 kilometers.
5. high speed transmission digital user loop modulator demodulator as claimed in claim 1 is characterized in that: wherein this error return program comprises the wrong of this long-range package of detecting and the mistake of replying this long-range package.
6. high speed transmission digital user loop modulator demodulator as claimed in claim 1 is characterized in that: wherein this control device is controlled the priority of this volume control device to detect the wrong of above-mentioned LAN connectivity port and to set above-mentioned LAN connectivity port.
7. high speed transmission digital user loop modulator demodulator as claimed in claim 1 is characterized in that: wherein this control device is controlled error return program and the signal handler in this transmitting device.
8. high speed transmission digital user loop modulator demodulator as claimed in claim 1 is characterized in that: wherein this control device is a central processing unit.
9. high speed transmission digital user loop modulator demodulator as claimed in claim 1 is characterized in that: wherein above-mentioned LAN is plural Fast Ethernet (Fast Ethernet).
10. high speed transmission digital user loop modulator demodulator as claimed in claim 9 is characterized in that: but wherein above-mentioned LAN connectivity port is connected to a random selection video system, a world-wide web voice protocol system, a fixed personal computer, a portable electronic equipment and other Internet device through plural Fast Ethernet connecting line.
11. high speed transmission digital user loop modulator demodulator as claimed in claim 1 is characterized in that: but wherein above-mentioned LAN connectivity port is connected to a random selection video system, a world-wide web voice protocol system, a fixed personal computer, a portable electronic equipment and other Internet device through plural Ethernet connecting line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02120260A CN1459972A (en) | 2002-05-17 | 2002-05-17 | High speed transmission digital user loop modulator demodulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02120260A CN1459972A (en) | 2002-05-17 | 2002-05-17 | High speed transmission digital user loop modulator demodulator |
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| Publication Number | Publication Date |
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| CN1459972A true CN1459972A (en) | 2003-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN02120260A Pending CN1459972A (en) | 2002-05-17 | 2002-05-17 | High speed transmission digital user loop modulator demodulator |
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2002
- 2002-05-17 CN CN02120260A patent/CN1459972A/en active Pending
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