CN1764142A - WLAN multi-frequency combined signal distributing system - Google Patents
WLAN multi-frequency combined signal distributing system Download PDFInfo
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- CN1764142A CN1764142A CN 200510110312 CN200510110312A CN1764142A CN 1764142 A CN1764142 A CN 1764142A CN 200510110312 CN200510110312 CN 200510110312 CN 200510110312 A CN200510110312 A CN 200510110312A CN 1764142 A CN1764142 A CN 1764142A
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Abstract
The invention relates to multiple frequency mixing signal distribution system in WLAN, which comprises: sends one or more AP signal to MF mixer by feed line; connecting the MF mixer into cavity coupler that links one or more antenna and/or cavity coupler. Wherein, replacing multiple AP covered traditional scheme by MF mixing signal distribution system with one set system mixing multiple AP to enhance effective bandwidth or as backup. This invention enlarges single AP signal cover range, solves same frequency interference, reduces system fault rate, realizes unified management to ensure security, and provides proper redundant backup scheme for WLAN.
Description
Technical field
The present invention relates to a kind of wireless lan (wlan) signal distributing system, particularly a kind of WLAN multi-frequency combined signal distributing system.
Background technology
Along with the fast development of wireless local area network technology, people press for the limitation of its frequency allocation of solution to satisfy network demand.
The WLAN standard of mainly using IEEE (international electric engineering specification tissue) to formulate in the market comprises IEEE 802.11a, IEEE 802.11b and IEEE 802.11g.Wherein IEEE802.11b and IEEE 802.11g are in the work of 2.4GHz frequency range, and the frequency range interval is 2400MHz-2497MHz, can divide 14 working channels at most, the frequency separation that each state all comes authorization to use according to actual conditions in this scope.IEEE 802.11a works in the 5.8GHz frequency range, being divided into is three frequency range intervals: U-NII low-frequency range (5.15-5.25GHz), U-NII Mid Frequency (5.25-5.35GHz), high band (5.725-5.850GHz), amount to bandwidth 325MHz, can divide 13 working channels in theory at most, the frequency separation similar with the 2.4GHz operating position, that each state all comes authorization to use according to actual conditions in this scope.
2.4GHz and 5.8GHz belongs to high-frequency range, high-frequency electric wave is because wavelength is shorter, thus signal often to be subjected to stopping of building and to be easy to generate in a lot of dead angles, the especially building this phenomenon in indoor distribution will be more serious.
In order to make wireless signal in the seamless within doors covering of complexity building, guarantee that simultaneously wireless network has evenly, stable and sufficient bandwidth, a kind of method is that (each AP coverage is less for interior WAP (wireless access point) (AP) quantity of the same area of coverage of increase, be commonly referred to discrete type and cover scheme), though this discrete type covering method can reach the purpose that seamless signal covers, but can bring channel disturbance, thereby influence the wireless network bandwidth and the stability of a system, increase device security hidden danger and system maintenance cost; Another kind method is to use the indoor signal compartment system, this method has overcome all drawbacks that a large amount of AP of above-mentioned usefulness do indoor covering, but can bring the problem of wireless network bandwidth deficiency in the tradition according to the coverage mode of the corresponding cover indoor signal compartment system of a channel, in order to improve wireless network bandwidth, just need lay signal distributing system in the multi-room simultaneously, this way not only cost is too high, and is too big to the finishing destruction of building, but also very not attractive in appearance.
Summary of the invention
Main purpose of the present invention provides a kind of WLAN (wireless local area network) (IEEE 802.11x) multifrequency and closes the road signal distributing system, when solve adopting a plurality of AP to cover large tracts of land circumstance complications indoor, contradiction between seamless covering of wireless signal and nearly frequency, the co-channel interference, and the poor signal to noise of signal, bandwidth is low, error rate height, the time problem such as prolongation.
Another object of the present invention provides a kind of WLAN multi-frequency combined signal distributing system, in order to solve the problem of the bandwidth deficiency that laying method brought that adopts a channel or corresponding one road indoor signal compartment system of frequency band.
Another purpose of the present invention provides a kind of WLAN multi-frequency combined signal distributing system, when adopting a plurality of AP to cover the baroque indoor environment of large tracts of land in order to solve, can't provide the problem of rational wireless network redundancy backup scheme.
A further object of the present invention provides a kind of WLAN multi-frequency combined signal distributing system, when adopting a plurality of AP to cover the baroque indoor environment of large tracts of land in order to solve, can not ensure the running environment of active equipment and the problem of physical security.
For achieving the above object, a kind of wireless lan (wlan) multifrequency that the present invention proposes is closed the road signal distributing system, one of them above AP is connected to the input of multiplefrequency mixer, the output of this multiplefrequency mixer is connected to cavity coupler by feeder line, and this cavity coupler is connected with one or more antenna and/or cavity coupler.
Close the coverage that the road signal distributing system can effectively increase separate unit AP with multifrequency, the uniformity that enhancing signal covers reduces the quantity of AP, and then has reduced channel disturbance effectively.Because antenna, cavity coupler, multiplefrequency mixer etc. all are inactive components, usually be difficult for breaking down, having only AP is unique active equipment, usually be placed in the good working environment such as machine room or light current well, so just improved the running environment of active equipment, and ensured the physical security of active equipment, and be convenient to unified management and maintenance, reduce system failure rate.
Simultaneously, above-mentioned any one AP that closes in the signal distributing system of road breaks down and can not cause the interruption of whole Radio Network System, has realized the redundancy backup to system, has improved system works efficient effectively.
In addition, portable terminal closes under the signal distributing system of road when mobile at same WLAN, to keep well being connected with same AP all the time, there is not switching problem between AP, so just having reduced portable terminal switches at AP, provide the high-performance guarantee for using (as VoIP) in real time, have higher upgradability.
Because WLAN signal distributions multifrequency is closed the road signal distributing system and can be realized linear dilatation, load balancing, when number of users constantly increases, can be written into the AP of greater number in the multiplefrequency mixer input port of signal distributing system front end, satisfy the needs that the user increases.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one.
Fig. 2 is the structural representation of the embodiment of the invention two.
Fig. 3 is the structural representation of the embodiment of the invention three.
Fig. 4 is the structural representation of the embodiment of the invention four.
Description of reference numerals:
1 multiplefrequency mixer, 2 cavity couplers, 3 ceiling mount antennas
4 power amplifiers, 5 power splitters
Embodiment
Fig. 1 is WLAN multi-frequency combined signal distributing system embodiment one, two input ports that adopt two AP that are operated on the different channels to be connected to 802.11 multiplefrequency mixers 1 close the road, be connected to cavity coupler 2 by the low-loss feeder line then, cavity coupler 2 by feeder line be connected ceiling mount antenna 3 and cavity coupler 2, cavity coupler 2 is connected to ceiling mount antenna 3 and cavity coupler 2 by feeder line, connect successively, last cavity coupler 2 is connected respectively to antenna 3 by feeder line.
Described multiplefrequency mixer 1 is the WLAN multi-frequency combined device of 802.11x series.WLAN multi-frequency combined device is a passive component, it is multiplefrequency mixer with frequency selective characteristic, frequency range comprises all working frequency range under IEEE802.11b, IEEE802.11g, the IEEE802.11a standard, its merging that is mainly used in the different frequency range signal with separate.
Multiplefrequency mixer can have two or more input ports, a delivery outlet, the signal of two or more IEEE802.11b, IEEE802.11g or IEEE802.11a different channels can be closed the road in one road signal distributing system, make two or more channels to work alone simultaneously, promptly aerial radiation goes out the WLAN signal of two or more frequencies, and interference-free work simultaneously.When two channels required to work simultaneously, high to the insulated degree requirement of two frequency range passages, Insertion Loss will be accomplished as far as possible little.Usually close that the isolation of any two passages is arranged on greater than 85dB behind the road, Insertion Loss is less than 1.5dB.
The channel incoming frequency of multiplefrequency mixer 1 passage (input port) is fixed, determine the working channel frequency range of the AP that is attached thereto, the frequency range of closing two passages in road as 1 channel and 11 channels of 2.4G frequency range is respectively: 2401-2423MHz and 2451-2473MHz, centre frequency is fixed as respectively: 2412MHz and 2462MHz.
Here come that with three ceiling mount antennas 3 whole flooring is carried out signal and cover, cover scheme to substitute the tradition of using three AP to cover.Portable terminal closes under the signal distributing system of road when mobile in same WLAN multifrequency, can keep well being connected with same AP all the time, does not have switching problem between AP.Have only two AP to take two non-overlapped channels respectively in the same floor, also do not have the channel disturbance problem.Can determine the quantity of antenna 3 according to actual needs; to guarantee the even covering of signal; wherein any one AP goes offline and can not cause wireless network to interrupt; and antenna 3; cavity coupler 2; multiplefrequency mixer 1 grade all is an inactive component; usually be difficult for breaking down; and being the WLAN multifrequency, AP closes only active equipment in the signal distributing system of road; they can be well protected in the family estate case; and lock to guarantee the physical security of equipment; the family estate case can optionally be installed in the good working environment simultaneously; in light current well or equipment room, centralized management maintains easily.By contrast, if three independently AP are installed in floor, channel can not guarantee complete independence, because the aisle is relatively more spacious, the transmission of wireless signals of AP gets farther, can form the interference between signal inevitably.In addition, active equipment is installed in each place in aisle, can not guarantee the physical security of AP as the operational environment and the equipment of active equipment, is unfavorable for the quick location and the eliminating of fault simultaneously, and daily maintenance and management.
Embodiment two: in order further to increase the coverage and the intensity of signal, avoid the power that is assigned on each antenna too little, the present invention has matched power amplifier 4 in the AP rear end according to the quantity of antenna.As shown in Figure 2, AP is connected with multiplefrequency mixer 1 by power amplifier 4 respectively, thereby has guaranteed the power demand on the antenna, has strengthened the even covering of signal more effectively.
Embodiment three: for the signal cover that is multiplied, the present invention is connected with a power splitter 5 between multiplefrequency mixer and cavity coupler, one road signal is divided into two-way, as shown in Figure 3, multiplefrequency mixer 1 is connected to power splitter 5 by feeder line, and power splitter 5 is connected with two-way cavity coupler 2 respectively by feeder line then, and coupler 2 is connected with coupler 2, ceiling mount antenna 3 respectively by feeder line successively, coupler 2 is connected with antenna 3 by feeder line then, and coupler 2 is connected with antenna 3 by feeder line.
Like this, two AP just can cover the scope that six AP of original needs could cover, and have enlarged the AP coverage effectively, have reduced active equipment, are convenient to equipment unified management and maintenance.In addition, can also according to actual needs signal be divided into three the tunnel, the four tunnel in addition more multichannel enlarge signal cover.
Fig. 4 closes road signal distributing system embodiment four for multifrequency, two AP are connected to two input ports of multiplefrequency mixer 1 respectively by power amplifier 4, multiplefrequency mixer 1 is connected to cavity coupler 2 by power splitter 5, coupler 2 is connected with cavity coupler 2, ceiling mount antenna 3 respectively by feeder line successively, cavity coupler 2 is connected with antenna 3 by feeder line then, and cavity coupler 2 is connected with antenna 3 by feeder line.
2.4GHz the peak power output of single AP is generally 20dbm, specifically with reference to various countries' relevant criterion.Yet closing in multifrequency needs to be used in combination more antenna amount in the signal distributing system of road, and the power output of each Antenna Design is controlled in the relevant criterion tolerance band (in the output area of China's design generally between the 15dBm to 20dBm).Close each antenna delivery outlet signal strength signal intensity design objective of road signal distributing system according to multifrequency, the loss objective of signal on computational scheme and the interface unit, power amplifier, power splitter, the cavity coupler equipment of apolegamy corresponding index are satisfied the demand to guarantee the signal energy that is transported to each antennal interface.
Here, the WLAN multifrequency is closed the road signal distributing system and is adopted two AP that are operated on the different channels to close the road by 802.11 multiplefrequency mixers after power amplifier amplifies, come that with six antennas 3 whole flooring is carried out signal again and cover, cover scheme to substitute the tradition of using six AP to cover.Portable terminal closes under the signal distributing system of road when mobile in same WLAN multifrequency, can keep well being connected with same AP all the time, does not have switching problem between AP.Have only two wireless access point AP to take two non-overlapped channels respectively in the same floor, also do not have the channel disturbance problem.Can determine according to actual needs that antenna amount and power amplifier are to guarantee the even covering of signal; wherein any one AP goes offline and can not cause wireless network to interrupt; and antenna; cavity coupler; multiplefrequency mixer; power splitters etc. all are inactive components; usually be difficult for breaking down; and being WLAN multifrequencies, AP and power amplifier 4 close only active equipment in the signal distributing system of road; they can be well protected in the family estate case; and lock to guarantee the physical security of equipment; the family estate case can optionally be installed in the good working environment simultaneously; in light current well or equipment room; centralized management maintains easily.By contrast, if six independently AP are installed in floor, channel can not guarantee complete independence, because the aisle is relatively more spacious, the transmission of wireless signals of AP gets farther, can form the interference between signal inevitably, active equipment also is installed in each place in aisle in addition, the physical security of AP be can not guarantee, the quick location and the eliminating of fault are unfavorable for simultaneously as the operational environment and the equipment of active equipment, and daily maintenance and management.
In the foregoing description, what multifrequency was closed road signal distributing system employing is two AP and the multiplefrequency mixer that two input ports are arranged, and according to the needs of actual conditions, also can increase the quantity of AP, uses the multiplefrequency mixer that the respective numbers input port is arranged simultaneously.As, if adopt three AP and triple channel multiplefrequency mixer, four AP and four-way multiplefrequency mixer or the like realize stable in the building, evenly, the wireless signal of high bandwidth covers, make a plurality of AP that work in different channels to close in the cover indoor signal compartment system of road to by 802.11 multiplefrequency mixers, be the wireless signal area of coverage service of same set of signal distributing system simultaneously, can increase effective bandwidth and number of users exponentially like this.And when wherein any one AP broke down, portable terminal can be automatically associated on the AP that is operated in the consolidated network zone on other channels, made network IP layer and above service can not interrupt.
The present invention can also realize the continuation of frequency range, all not overlapping channels of 2.4G frequency range under 802.11x and 5.8G frequency range can be closed the road in theory.2.4GHz containing three, frequency range intact closes nonoverlapping channel; U.S. FCC is given for the frequency range interval of 5.8GHz WLAN (wireless local area network): U-NII low-frequency range (5.15-5.25GHz), U-NII Mid Frequency (5.25-5.35GHz), high band (5.725-5.825GHz), frequency bandwidth amounts to 300MHz.The frequency that is used for FCC U-NII of standard and channel assignment scheme are in the international standard: provide 8 not overlapping channels in low, the U-NII frequency range of total bandwidth for 200MHz, 4 not overlapping channels are provided in the 100M of high U-NII frequency range bandwidth.Use frequency range to be the 5.725-5.850GHz frequency range in China regulation 5.8GHz WLAN (wireless local area network), frequency bandwidth amounts to 125MHz, and 5 not overlapping channels are provided, and 5.15-5.35GHz frequency range present stage can not be used for WLAN (wireless local area network) in China.Close the road for those not overlapping channels of concrete selection, can freely select the road mode of closing of multifrequency combination according to the regulation of actual conditions and concrete country, even can do the road of closing between 2.4GHz frequency range and the 5.8GHz frequency range, thereby find best coverage mode.
Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can make amendment or the part technical characterictic is equal to replacement the specific embodiment of the present invention; And not breaking away from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (5)
1, a kind of WLAN multi-frequency combined signal distributing system, it is characterized in that: more than one WAP (wireless access point) is connected to cavity coupler by multiplefrequency mixer, and described cavity coupler is connected with one or more antenna and/or described cavity coupler.
2, WLAN multi-frequency combined signal distributing system according to claim 1 is characterized in that: described WAP (wireless access point) respectively is connected to described multiplefrequency mixer by a power amplifier.
3, WLAN multi-frequency combined signal distributing system according to claim 1 and 2, it is characterized in that: be connected with power splitter between described multiplefrequency mixer and the described cavity coupler, described power splitter by the multichannel feeder line connect a plurality of respectively with the corresponding described cavity coupler of described feeder line.
4, WLAN multi-frequency combined signal distributing system according to claim 1, it is characterized in that: described WAP (wireless access point) operating frequency is 2.4GHz frequency range radiofrequency signal or 5.8GHz frequency range radiofrequency signal, perhaps 2.4GHz frequency range radiofrequency signal and 5.8GHz frequency range radiofrequency signal.
5, WLAN multi-frequency combined signal distributing system according to claim 1, it is characterized in that: described multiplefrequency mixer is the multiplefrequency mixer with frequency selective characteristic, the input port fixed-frequency of described multiplefrequency mixer, and the two paths of signals isolation is greater than 85dB arbitrarily, and Insertion Loss is less than 1.5dB.
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| CN 200510110312 CN1764142A (en) | 2005-11-08 | 2005-11-08 | WLAN multi-frequency combined signal distributing system |
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| CN 200510110312 CN1764142A (en) | 2005-11-08 | 2005-11-08 | WLAN multi-frequency combined signal distributing system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102880743A (en) * | 2012-08-24 | 2013-01-16 | 广州天越电子科技有限公司 | WLAN (wireless local area network) drawing design method based on AutoCAD (auto computer aided design) platform |
| CN101459463B (en) * | 2008-12-29 | 2013-03-20 | 杭州华三通信技术有限公司 | Method, system and device for data transmission |
| CN101778398B (en) * | 2010-01-04 | 2013-04-24 | 泉州泽仕通科技有限公司 | Method and device for realizing mobile communication signal field coverage in building |
| CN101771447B (en) * | 2008-12-31 | 2014-03-19 | 中兴通讯股份有限公司 | Device and system for emitting and receiving multi-carrier frequency signals |
| CN107968661A (en) * | 2017-12-29 | 2018-04-27 | 河南思维轨道交通技术研究院有限公司 | Signal handling equipment and signal transmission system |
| CN110868721A (en) * | 2019-10-15 | 2020-03-06 | 内江喜马雅拉网络技术有限公司 | Indoor signal balanced distribution system and method |
-
2005
- 2005-11-08 CN CN 200510110312 patent/CN1764142A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101459463B (en) * | 2008-12-29 | 2013-03-20 | 杭州华三通信技术有限公司 | Method, system and device for data transmission |
| CN101771447B (en) * | 2008-12-31 | 2014-03-19 | 中兴通讯股份有限公司 | Device and system for emitting and receiving multi-carrier frequency signals |
| CN101778398B (en) * | 2010-01-04 | 2013-04-24 | 泉州泽仕通科技有限公司 | Method and device for realizing mobile communication signal field coverage in building |
| CN102880743A (en) * | 2012-08-24 | 2013-01-16 | 广州天越电子科技有限公司 | WLAN (wireless local area network) drawing design method based on AutoCAD (auto computer aided design) platform |
| CN107968661A (en) * | 2017-12-29 | 2018-04-27 | 河南思维轨道交通技术研究院有限公司 | Signal handling equipment and signal transmission system |
| CN110868721A (en) * | 2019-10-15 | 2020-03-06 | 内江喜马雅拉网络技术有限公司 | Indoor signal balanced distribution system and method |
| CN110868721B (en) * | 2019-10-15 | 2021-10-12 | 内江喜马雅拉网络技术有限公司 | Indoor signal balanced distribution system and method |
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Open date: 20060426 |