CN101547176B - Device for realizing 802.11nMIMO technology in cable network - Google Patents
Device for realizing 802.11nMIMO technology in cable network Download PDFInfo
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- CN101547176B CN101547176B CN2009101037267A CN200910103726A CN101547176B CN 101547176 B CN101547176 B CN 101547176B CN 2009101037267 A CN2009101037267 A CN 2009101037267A CN 200910103726 A CN200910103726 A CN 200910103726A CN 101547176 B CN101547176 B CN 101547176B
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Abstract
The invention relates to a device for realizing 802.11n MIMO technology in a cable network. The device comprises a pair of or more frequency converters connected through a cable network, wherein each frequency converter is provided with a first radio frequency (RF) port and a second RF port; the first RF port is connected with the first RF port of another frequency converter through the cable network; the second RF ports are respectively connected with 802.11n RF/baseband chips; the working frequency of the first RF ports of each pair of the frequency converters is identical and is different from that of the first RF ports of other pairs of the frequency converters; and the working frequency of the second RF ports of all frequency converters is identical. The device makes use of a pair of802.11n baseband chips and a plurality of pairs of 802.11n RF chips and the frequency converters to form a plurality of communication channels in a plurality of frequency bands of the cable network, thereby realizing the 802.11n MIMO technology in the cable network.
Description
Technical field
The present invention relates to the cable network field, particularly relate to a kind of multiband device of in cable network, realizing 802.11n MIMO technology.
Background technology
(Multi-Input, Multi-Output), the expression multiple-input and multiple-output is used in a lot of fields of the communication technology and computing technique MIMO.MIMO in the IEEE 802.11n technology is meant that aerial same working frequency points is utilized electromagnetic refraction and scattering, forms a plurality of information channels, transmits and receive digital information.Based on access point (AP, the Access Point) equipment and website (Station) equipment of 802.11n technology, 2 or more antenna can be installed all.Every pair of antenna provides a channel.That is, utilize the MIMO technology, under the situation that does not increase frequency range and antenna transmission power, can improve the digital bandwidth of radio communication exponentially, improve the availability of frequency spectrum exponentially.And, no matter having disposed 2 pairs or the 3 pairs of antennas and corresponding radio frequency chip, baseband chip is 1 pair.
Prior art 802.11g of IEEE 802.11 series and products thereof has been successfully used to the broadband access market of cable network, and is widely accepted with its good ratio of performance to price.Yet, when the technology 802.11n of new generation with 802.11 series is used for the broadband access of cable network, but run into the technology barrier that can't go beyond: it is the message transmission of medium that the MIMO technology can't be directly used in the metal wire, because refraction and scattering do not take place electromagnetic wave, can not be formed on a plurality of independent channels on the same working frequency points in metal wire.
Summary of the invention
In view of above-mentioned, the objective of the invention is to propose a kind of device of in cable network, realizing the 802.11nMIMO technology, a plurality of independent channels that will utilize refraction and scattering to realize in air become a plurality of independent channels that utilize the different operating frequency to realize in metal wire, that is, become sky and be divided into frequency division, thereby can utilize existing 802.11n baseband chip and radio frequency chip, realize the broadband access system in the cable network.
In order to reach above-mentioned purpose of the present invention, the present invention proposes a kind of device of realizing 802.11n MIMO technology in cable network, it is characterized in that: comprising: by cable network connect a pair of or a pair of with upconverter, described frequency converter has first prevention at radio-frequency port and second prevention at radio-frequency port, described second prevention at radio-frequency port connects 802.11n radio frequency/baseband chip, and described first prevention at radio-frequency port is connected with first prevention at radio-frequency port of another frequency converter by cable network; The operating frequency of first prevention at radio-frequency port of described every pair of frequency converter is identical, and the operating frequency of first prevention at radio-frequency port of the operating frequency of first prevention at radio-frequency port of every pair of frequency converter and other right frequency converters is inequality.
Preferred as technique scheme, the operating frequency of first prevention at radio-frequency port of described frequency converter is lower than the operating frequency of second prevention at radio-frequency port.
Preferred as technique scheme, the operating frequency of first prevention at radio-frequency port of every pair of frequency converter and other right frequency converters at interval enough far, and is separate to guarantee each communication channel.
Preferred as technique scheme, described cable network is a coax network, or other cable networks that can guarantee two above communication channels of 802.11n and not influence the normal propagation of cable TV signal.
The present invention constitutes a plurality of communication channels in a plurality of frequency ranges of same cable network, and first prevention at radio-frequency port that a pair of frequency converter at each communication channel two ends is set is operated in same operating frequency, and operating frequency is inequality between every pair of frequency converter, so just can utilize the different frequency range in the same cable network to communicate, thereby realize 802.11n MIMO technology in the cable network.
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, for the person of ordinary skill in the field, from detailed description of the invention, above-mentioned and other purposes of the present invention, feature and advantage will be apparent.
Description of drawings
Fig. 1 is the multiband MIMO schematic diagram of a preferred embodiment of the present invention.
Embodiment
For making the above-mentioned purpose of the present invention, feature and advantage can more obvious easy understanding,, be described in detail below below in conjunction with one embodiment of the present invention:
As shown in Figure 1, a preferred embodiment of the present invention is realized by a plurality of frequency converters and the subscriber equipment that has 802.11n radio frequency/baseband chip, this device comprises: by cable network connect a pair of or a pair of with upconverter, the prevention at radio-frequency port that each frequency converter all has a upper frequency with a prevention at radio-frequency port connecting 802.11n radio frequency/baseband chip and prevention at radio-frequency port that a lower frequency is arranged to be connected with spider lines.
Another frequency converter in 1 prevention at radio-frequency port of above-mentioned 802.11n radio frequency/baseband chip by chip, 1 frequency converter, cable network, the cable network constitutes a communication channel with 1 prevention at radio-frequency port of another 802.11n radio frequency/baseband chip.Two frequency converters in this channel are operated in identical working frequency points, and promptly this in this channel is identical to the operating frequency of the prevention at radio-frequency port of the lower frequency of frequency converter and cable network connection.
According to the connected mode of an above-mentioned communication channel, can utilize and many frequency converter and 802.11n radio frequency chip be realized a plurality of communication channels on a plurality of working frequency range of cable network, realize multichannel communication with this.And the 802.11n baseband chip has one or more prevention at radio-frequency port, and each prevention at radio-frequency port of 802.11n baseband chip is used for one tunnel communication.
When realizing a plurality of communication channel, the operating frequency of the prevention at radio-frequency port of the lower frequency that the every pair of frequency converter is connected with cable network and other are to having nothing in common with each other, this lower frequency can be arranged in the frequency band range of cable network permission setting, and frequency interval should be provided with enough far, to guarantee the independence of each communication channel.And all frequency converters are all identical with the operating frequency of the prevention at radio-frequency port of 802.11n radio frequency/baseband chip connection, and meet the 802.11n standard.
Cable network among the embodiment is a coax network, can certainly be other cable networks that can guarantee two above communication channels of 802.11n and not influence the normal propagation of cable TV signal.Described frequency converter can adopt frequency converter of the prior art, is CN1780245A as publication number, WO/2004/073331, WO/2006/056043, the frequency converter in the patent application of WO/2008/029410.
Below be based on two specific embodiments that apparatus of the present invention realize:
The broadband point-to-point communication:
Based on communicator of the present invention, if an end of cable network is the website (Station) of 802.11n, the other end is the access point AP (Access Point) of 802.11n, and then when dijection frequency port IC was selected at two ends for use, traffic rate (physical layer) can reach 300Mbps; When three radio frequency port IC were selected at two ends for use, traffic rate (physical layer) can reach 450Mbps.
Broadband access system:
Based on communicator of the present invention, if an end of cable network has the website (Station) of some 802.11n, the other end is the access point AP (Access Point) of 802.11n, AP and every station point all are equipped with dijection port and dual frequency converter frequently, and then primordial is in the broadband access system of cable network.AP is that current packet is split into 2 in the transmission data, goes out by two antenna transmission; At the Station end, then be that the data that two antennas receive are integrated into a packet.The traffic rate of this connecting system (physical layer) can reach 300Mbps.
Certainly; the present invention also can have other embodiment; under the situation of spirit that does not deviate from the present invention and essence, the person of ordinary skill in the field works as can make various corresponding changes according to the present invention, but these corresponding changes all should belong to the protection range of claim of the present invention.
Claims (4)
1. in cable network, realize the device of 802.11n MIMO technology, it is characterized in that: comprising: by cable network connect a pair of with upconverter, described frequency converter has first prevention at radio-frequency port and second prevention at radio-frequency port, and described first prevention at radio-frequency port is connected with first prevention at radio-frequency port of another frequency converter by cable network; Described second prevention at radio-frequency port connects 802.11n radio frequency/baseband chip respectively; The operating frequency of first prevention at radio-frequency port of described every pair of frequency converter is identical, and the operating frequency of first prevention at radio-frequency port of the operating frequency of first prevention at radio-frequency port of every pair of frequency converter and other right frequency converters is inequality; The operating frequency of second prevention at radio-frequency port of all frequency converters is all identical.
2. the device of realizing 802.11n MIMO technology in cable network according to claim 1 is characterized in that the operating frequency of first prevention at radio-frequency port of described frequency converter is lower than the operating frequency of second prevention at radio-frequency port.
3. the device of in cable network, realizing 802.11n MIMO technology according to claim 1 and 2, it is characterized in that, the operating frequency of first prevention at radio-frequency port of every pair of frequency converter and other right frequency converters is enough far away at interval, and is separate to guarantee each communication channel.
4. the device of in cable network, realizing 802.11n MIMO technology according to claim 1, it is characterized in that, described cable network is a coax network, or other can guarantee to meet two above communication channels of IEEE 802.11n standard and cable network that can the normal propagation cable TV signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101037267A CN101547176B (en) | 2009-04-29 | 2009-04-29 | Device for realizing 802.11nMIMO technology in cable network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101037267A CN101547176B (en) | 2009-04-29 | 2009-04-29 | Device for realizing 802.11nMIMO technology in cable network |
Publications (2)
| Publication Number | Publication Date |
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| CN101547176A CN101547176A (en) | 2009-09-30 |
| CN101547176B true CN101547176B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101037267A Expired - Fee Related CN101547176B (en) | 2009-04-29 | 2009-04-29 | Device for realizing 802.11nMIMO technology in cable network |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008033298A2 (en) * | 2006-09-15 | 2008-03-20 | Corning Cable Systems Llc | Radio over optical fiber cable system with transponder diversity |
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2009
- 2009-04-29 CN CN2009101037267A patent/CN101547176B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008033298A2 (en) * | 2006-09-15 | 2008-03-20 | Corning Cable Systems Llc | Radio over optical fiber cable system with transponder diversity |
Non-Patent Citations (2)
| Title |
|---|
| Syed Aon Mujtaba等.将无线网络技术的性能再提升.《无线电工程》.2003,(第4期),14-16. * |
| 李海军.MIMO技术在泄漏电缆中的应用.《北京邮电大学硕士研究生学位论文》.2007,33-48. * |
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| CN101547176A (en) | 2009-09-30 |
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Denomination of invention: Device for realizing 802.11nMIMO technology in cable network Effective date of registration: 20170411 Granted publication date: 20110803 Pledgee: Industrial Commercial Bank of China Ltd Beibei Chongqing branch Pledgor: CHONGQING SICMICRO Co.,Ltd. Registration number: 2017980000110 |
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