CN1750489A - Method for constructing extendable WLAN network using general WLAN access point - Google Patents
Method for constructing extendable WLAN network using general WLAN access point Download PDFInfo
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Abstract
A method for establishing extensible WLAN network utilizing WLAN accessing site, which contains using 5.8GH frequency band as backbone transmission frequency band or back to back relay use, then using 2.4GH frequency band combined with wireless network card to cover the final user, or on the contrary, the AP, which is being responsible for backbone transmission, connected with cable ethernet exchanger or router interface and transmitting data to the far end 5.8Hz AP by radio wave, and establishing definite AP basic assembling pairs for extending wireless network.
Description
Technical field
The present invention relates to data communication field, particularly a kind of universal wlan access point (AP) that utilizes makes up ductile, the method for wlan network flexibly.
Background technology
Along with the development of Personal Communications Services, at the requirement of fixed-line subscriber wideband switch-in business, multinomial broadband access technology is developed.The wireless Internet that is driven by technology such as WAP, GPRS, WLAN starts comprehensively, and its growth rate will be considerably beyond wired Internet then.Now, people are to the further raising of wireless Internet bandwidth demand, and the broadband fixed wireless access technology is paid close attention to by people just day by day.
WLAN (wireless local area network) (Wireless LAN, hereinafter to be referred as WLAN) be the product that the nineties, computer network combined with wireless communication technology, it provides a kind of effective ways that use the wireless multiple access channel to support communication between the computer, and provides potential means for the mobile of communication, individualized and multimedia application.Development along with personal data communication, the powerful portable data terminals and the extensive use of multimedia terminal, for the target that realizes that anyone all can realize data communication at any time and any place, require traditional computer network by there being alignment wireless, by fixing to moving, to multimedia evolution, further promoted the development of WLAN by single business.
No matter be on the airport, hotel, school, or dining room, those users of coffee shop are dense relatively, and mobile higher place, traditional cable network is difficult to satisfy mobile subscriber's access demand.Have only wireless local area network technology can adapt to such application places.
In view of WLAN (wireless local area network) (Wireless LAN) swift and violent growth like this, IEEE (international IEEE) has formulated the whole world first WLAN standard IEEE802.11, and released one after another again 802.11b and three new standards of 802.11a, 802.11g.These standard definitions use the WLAN devices of 2.4GHz frequency range and 5.8GHz frequency range that the access speed of 11Mbps to 54Mbps, technical characteristics such as 802.11 series standards have possessed at a high speed, frequency range and channel diversity, distance is limited and can control can be provided to the client.Wlan product when providing access service for the client, each radio access point (AP) must under be connected to spider lines, this make wiring workload and lay cost and increase, the extension performance of whole wireless network is not good.Current, " freedom " characteristic of WLAN has brought following problem for professional operation:
Different focuses adhere to different service providers separately, cause the user when different focuses insert, and are professional to the application of professional provider of many families respectively, clearing respectively;
Frequency is not subjected to control, and focus is built similar " Movement of Enclosure ", and a tame operator is difficult to the focus that the client often stays is accomplished comprehensive covering;
Service attribute, access authentication mode that different business operator supports are also different, and different focuses disposes different client softwares possibly.We can say that WLAN market is in the state that a kind of height is cut apart at present, in the process of mature market of marching toward, need to solve the roaming between the different business provider, and the capability problems that service package is provided for the user.In this process, the wireless mesh network of metropolitan area scope (Mesh WLAN) mechanism is just arisen at the historic moment.Because wireless mesh network (Mesh WLAN) net itself is simple in structure flexibly, with the ease for use of WLAN with bring the user at a high speed, cellular type network, the reliability height, do not need to lay expensive special line toward each node, multinode cooperatively interacts, and can reach the effect of area coverage and transmission rate multiplication.Yet, the criteria of right and wrong of wireless mesh network own, the product of a company is not possess interoperability between another company's product.And the wireless route between its AP and the AP to take the bandwidth resources of system bigger, increased the time-delay of system.
Summary of the invention
The present invention uses universal AP to set up wireless network can alleviate the problems referred to above, here the network-building method that is proposed is wireless lan (wlan) access point (the Access Point that has different transmission properties to existing, be called for short AP) organically make up, to make up big area coverage, ductile wireless local area network (WLAN) system, this network system can provide voice, the wireless access service of data and Streaming Media multinomial business such as (streaming media) for moving with fixed-line subscriber.
Universal AP is meant the infinite network product that meets the IEEE802.11 serial protocols, comprise AP, wireless network card or the like, feature of the present invention is to adopt universal radio network product to make up a cellular cell, and each cellular cell is made up constituting substantially by an AP.The cell structure of a plurality of similar honeycombs realizes that the metropolitan area covers, and the AP combination between the cellular cell can have nothing in common with each other to type, according to the capacity and the bandwidth demand of sub-district come concrete configuration separately.Simultaneously, between each cellular cell, rely on reasonable frequency planning, can reach the maximum stable degree of signal, bandwidth, in order to optimize network, basic AP between can adopt the mode of integrated or external antenna, accomplish the maximization (blind area minimizes) of overlay area.
According to the regulation of State Radio Regulatory Commission to 2.4～2.4835GHz frequency range and 5.725～5.825GHz frequency range, the present invention is with the transmission band of these two groups of frequency ranges as the extensible wlan network of establishment.Because the signal of propagating in these two frequency ranges can the phase mutual interference, the feasible like this radio access point (AP) that is operated on these two frequency ranges can be worked in a kind of network simultaneously.
For example: the present invention can use the 5.8GHz frequency range, and (5.725-5.825GHz is because the power output height as the use of the connection between AP frequency range, be suitable between the building or the wireless application of outdoor environment), and with the 2.4GHz frequency range as with End-Customer devices communicating frequency range (using) as covering the client.
Detailed Description Of The Invention:
The bimodulus mode that works in of radio access point of the present invention, (possess two independently, work in the transceiver module of different frequency range), working frequency range according to different access environmental selection bimodulus, select 2.4GHz, 5.8GHz frequency range flexibly, for example can make full use of the characteristic that the 5.8GHz frequency range adapts to outdoor high bandwidth transmission, this frequency range is used mainly as backbone transport, or relaying uses back-to-back, utilizes ripe 2.4GHz frequency range AP to cooperate wireless network card to cover the end user then.
Except the radio access point that is operated in the bimodulus mode, the present invention has also made full use of the antenna of omnidirectional's mode or oriented approach work, key in principle transfer of data adopts directional antenna to connect, and the transmission that the end user covers character can adopt flexibly that directional antenna and omnidirectional antenna are used alternatingly.
For the AP that undertakes key data transfer task (for example with the 5.8GHz frequency range as converging frequency range, 2.4GHz frequency range) as covering frequency range, it connects wired Ethernet handing-over machine or router interface on the one hand downwards, it uses radio wave the 5.8GHzAP of data biography to far-end simultaneously, after the signal of this 5.8GHz is reduced into baseband signal, will be sent to wireless network card user in the area of coverage by the 2.4GHz carrier wave.Each bimodulus AP all possess check the whether correct ability of the packet of accepting, promptly receive only packet with correct wireless network address, perhaps according to IP address based on the packet defined, and according to the AP routing table or according to it being forwarded to Ethernet under this far-end router based on the IP address of this packet defined and according to the content of far-end router routing table, if the IP address of the content of routing table and packet does not match, then abandon this packet.
The WLAN subnet that a plurality of basic combinations are formed structure, to the easiest method of the management of wireless network is to utilize external router to manage, this external router is connected in is responsible for the AP end that key relaying is used, it knows all long-range covering users' AP, and the function that just looks like a router on the backbone network is the same.In this way, when increasing or deleting one when covering user's AP, have only two routing tables to be updated, one is the routing table that belongs to outside router, and one is to belong to the AP routing table that the key relaying that AP connected that far-end covers the user is used.
Another mode is, the far-end that configuration is connected with it in the routing table of the AP that the key relaying in each center is used covers the route of user's AP, the AP that this mode preferably is used in far-end covering user increases and decreases under the not frequent situation, perhaps, the scale of whole wireless network is smaller, in this case, the AP end (ether interface) that only key relaying need be used links to each other with ethernet concentrator.
Central idea of the present invention is: it is right that the AP that sets up limited number makes up substantially, makes up substantially extending wireless network with AP.Described scheme is with the ease for use of WLAN and bring the user at a high speed, the reliability height, do not need to lay expensive special line toward each node, multinode cooperatively interacts, can reach the effect of area coverage and transmission rate multiplication, and what adopt is the compatible high network equipment of standard, so is a kind of method that makes up ductile wlan network flexibly.
Description of drawings
Fig. 1 is networking topology schematic diagram of the present invention; Fig. 2 be AP I omnidirectional to the user, reordering upwards connects the dual-mode of operation ideograph; The bimodulus figure working mode figure that Fig. 3 reorders and upwards connects the user for AP II orientation; Fig. 4 converges the figure working mode figure for the APIII orientation point to point; Fig. 5 is that basic combination is to A AP I--APIII topology schematic diagram; Fig. 6 is that basic combination is to B AP II--APIII topology schematic diagram; Fig. 7 is that basic combination is to C AP I--AP II topology schematic diagram; Fig. 8 is that basic combination is to D AP I--AP I topology schematic diagram; Fig. 9 is that basic combination is to E AP II--AP II topology schematic diagram; Figure 10 is for covering the wlan implementation illustration intention of single building to B with three basic combinations; Figure 11 is for being intended to the wlan implementation illustration that D covers the large tracts of land opening A or three combinations with three combinations; Figure 12 is an independent assortment Application Example schematic diagram between the combination of sets; Figure 13 is the fundamental diagram that is operated in two AP on the different frequency range, and Figure 14 is the fundamental diagram that is operated in two AP on the different frequency range.
Embodiment
According to such scheme, the present invention carries out following classification with universal AP:
AP I: omnidirectional is to the user, reorders upwards to connect bimodulus (including the two cover transceivers that are operated in different frequency range) AP (as AP I omnidirectional to the user, reorder upwards connect bimodulus pattern Fig. 2 show).
This AP is a dual-mode transceiver, and built-in 2.4GHz and 5.8GHz transceiver module use one of them frequency range to be equipped with omnidirectional antenna and cover the end user.Use another frequency range to be equipped with and connect base station (by switch or router and the interconnected AP of cable network) on the directional antenna
AP II: directed to user bimodulus (including the two cover transceivers that the are operated in different frequency range) AP that upwards connects (the user bimodulus figure Fig. 3 that upwards connects that reorders being shown) that reorders as AP II orientation.
This AP is a dual-mode transceiver, built-in 2.4GHz and 5.8GHz transceiver module, and the 2.4GHz transceiver module covers the end user with directional antenna.5.8GHz transceiver module is to connect base station (by switch or router and the interconnected AP of cable network) APIII on the directional antenna: orientation point converges usefulness to point, include transceiver single or a plurality of and that the last logotype transceiver working frequency range of bimodulus AP is complementary, this kind AP possesses the Ethernet interface, follows IEEE802.3 agreement (point converged with figure Fig. 4 show as the APIII orientation point).
According to aforementioned schemes, it is right that the present invention is divided into following basic combination with universal AP:
Basic combination is used a frequency range to be equipped with omnidirectional antenna to A:AP I--APII (showing as Fig. 5 AP I--APIII) API and is covered the end user, and the end user in the omnidirectional antenna coverage just can enjoy the network insertion service by the wireless network card of supporting 802.11 agreements.Another frequency range of API be equipped with directional antenna upwards collection be linked to the APIII that converges usefulness.The signal that transmitted by API this moment can have access to spider lines, also can be sent to next wireless network by another transceiver of APIII.
Substantially make up B:APII--APIII (showing) as Fig. 6 APII-APIII
The directional antenna that APII uses a frequency range to be equipped with covers the zone of some appointments, end user in the appointed area just can enjoy the network insertion service by the wireless network card of supporting 802.11 agreements, simultaneously, another frequency range of APII is equipped with directional antenna and is connected to the APIII that converges usefulness, the signal that transmitted by APII this moment can have access to spider lines, also can be sent to next wireless network by another transceiver of APIII.
Substantially make up C:AP I--AP II (showing) as Fig. 7 AP I--AP II
The omnidirectional antenna that API uses a frequency range to be equipped with covers the end user, and the end user in the omnidirectional antenna coverage just can enjoy the network insertion service by the wireless network card of supporting 802.11 agreements.Another frequency range of API is equipped with directional antenna and is connected to APII, and APII forwards a signal to next wireless network by another frequency range after receiving the signal that API sends.
Substantially make up D:AP I--AP I (showing) as Fig. 8 AP I--AP I
Two omnidirectional antenna covering end users that API uses a frequency range to be equipped with, the end user in the omnidirectional antenna coverage just can enjoy the network insertion service by the wireless network card of supporting 802.11 agreements.Two API use another frequency range to be equipped with directional antenna and are connected to each other, and making can mutual communication between two wireless networks.
Substantially make up E:AP II--AP II (showing) as Fig. 9 AP II--AP II
Two APII use same frequency range to make and can communicate each other, and simultaneously, two APII use another frequency range to connect different wireless networks.So, two different wireless networks can be set up radio communication by the connection of two APII.But utilize several differences to close the wlan network of the right combination framework of basic combination at different situations.
Each make up substantially between Principle of Communication:
As an AP, when AP I (or AP II) will mail to the APIII that is used for backbone transport with one or more packets, it wants to send earlier " taking a request " signal on channel, because channel is divided into some time slots, these time slots are shared with AP (AP I or AP II) by all coverings, might there be a plurality of coverings on same time slot, to launch (collision) with AP, consequently or cover with one among the AP and be able to busy channel emission data, or cover all successfully networkings with AP.If cover with AP and do not receive the request-reply that allows the emission packet, it will continue retransmission channel and take request.The number of time slot of channel will guarantee to cover with AP and can not get clogged for a long time when collision occurring.
When the APIII that is used for backbone transport receive from cover with AP take request after, it is joined in the polling list polling table, APIII is with the take request of the covering in the mode poll polling list polling table of circulation with AP, after covering was received the polling request of the APIII that is used for backbone transport on the channel with AP, it was launched a packet and replys this request on channel.
For example: the WLAN that covers single building makes up B (showing as Figure 10) substantially with three
If when the user of three sides of building building needs the network coverage, can use the APII of three orientations to the user, these three APII again with possess the APIII that is connected to down spider lines and link to each other, make the user of three sides of building to be linked in the cable network that provides by APIII and go by wireless network card.
Cover the large tracts of land opening with three combinations to A or three combinations to D (showing) as Figure 11.For the bigger open ground of the area that is not suitable for connecting up,, make that the client under omnidirectional antenna covers inserts private network or internet easily by being connected of several APIII and API.
Many cases more: can continue independent assortment (showing) between the combination of sets as Figure 12.Each combination between intersection use, make the wireless networking zone infinitely to extend, even, set up the wireless network of metropolitan area scope by equipment such as switch routers.
The control of co-channel interference:
With the 2.4GHz frequency range is the example explanation, divide regulation and frequency spectrum operating position according to China's radio frequency, 2.4GHz frequency range (2.4-2.4835GHz), 13 subchannels have been divided altogether, each channel occupies the bandwidth up to 22MHz, and can under the 2.4GHz frequency band, have 3 subchannels of perfecting monopoly simultaneously, and therefore the phase mutual interference can be reduced to minimum, it is only utilizing these frequency ranges to be used as many honeycombs coverings.In each subchannel, according to 11 at random code element each base station user is compiled cdma.Each user uses quadrature or near the spread spectrum coding of quadrature, each user's source signal can be compound in the same wireless transmission channel, realizes that channel is multiplexing.
In these 13 channels, only have three channels not cover fully, if the coverage of two access points interacts, they have used the frequency range of mutual covering simultaneously, this can cause their interfering with each other when signal transmits, thereby has reduced the performance and the efficient of they each automatic networks.
Make full use of and have a plurality of zero lap channels on the same WLAN frequency range, and a plurality of minimum band overlapping channels.At adjacent area arrangement and use zero lap channel or minimum overlapping channel as far as possible.
Figure 13 is a 2.4-2.4835GHz channel distribution map.Can learn that by Figure 13 the zero lap channel subset is (1,6,11), (2,7,12), (3,8,13), (4,9), (5,10)
Utilize the size and the direction of directive antenna control area coverage:
The antenna that networking person uses orientation or omni-directional can be independently for the AP of each type is for each makes up the given coverage of wireless network to making up substantially.
The coverage of omnidirectional antenna is 30 ° to 120 ° orientation.The zone that is suitably for similar open terrain provides covering.The AP that adds band low gain omnidirectional antenna can cover nearer terminal use.
For the AP that the work backbone converged and covered the end user, use the directional antenna of fan type, dish formula can increase the electric wave transmission range usually, reach terminal far away, but can not regulate the restriction of propagating EIRP.Country is restricted to propagating EIRP, and the antenna of installation must be used alternatingly transmitting power and gain, uses fan type antenna will reduce transmission range at key convergent point like this, whenever uses directional antenna all can reduce cross interference between the different networks.This is general mode, even do not have the income on the electric wave transmission range like this.
The control of basic combination centering transmitter transmission radius
In actual applications, on connect transmitter transmission radius should with cover user transmitter transmission radius and suitably mate, with balance area coverage and blind area area.
Adjustable parameter has:
Transmitting power
Receiving sensitivity
Antenna gain
On connect and cover user's working frequency range
A plurality of by the WLAN subnet of Several combination to constituting, can connect with wired ether (Ethernet) switch or router (Router) and realize route between subnet, further constitute bigger WLAN net.
More than be among the present invention about using the introduction of universal wlan access point compound mode and operation principle.It is more autonomous more flexibly for the end user provides multiple services a kind of effective means that the meaning of inventing this networking way is that it makes that the WLAN net becomes, but not only be to seize a kind of means of client as being similar to now the formula of enclosing the land.So just opened up a huge broadband access market for the operator that builds the WLAN site, and because the WLAN net itself has simple in structure flexible, be suitable for characteristics such as new generation network developing direction,, will have very much competitiveness as a kind of emerging broadband access technology.
Though introduction of the present invention is considered that with present technology practical methods is set out and made the most, but what need here to spell out is, the network-building method of being invented should only not only limit to funtion part described here, and the statement that the present invention has done comprises any change and improvement that does not deviate from design philosophy involved in the present invention and engineering philosophy to the full extent.
Claims (6)
1. method of utilizing universal wlan access point to make up ductile wlan network, possess two transceiver modules that independently, work in the radio access point of different frequency range and be set to dual-mode working mode, working frequency range according to different access environmental selection bimodulus, the 5.8GHz frequency range that adapts to outdoor high bandwidth transmission characteristic is used as the backbone transport frequency range, or relaying uses back-to-back, utilizes ripe 2.4GHz frequency range AP to cooperate wireless network card to cover the end user then; Perhaps opposite; It is characterized in that: described universal AP is set to following three class mode of operations, and API omnidirectional is to the user, and reordering upwards connects bimodulus, promptly uses one of them frequency range to be equipped with omnidirectional antenna and covers the end user, uses another frequency range to be equipped with and connects the base station on the directional antenna; The bimodulus that the APII orientation is reordered and upwards connected the user promptly uses 2.4GHz transceiver module wherein to cover the end user with directional antenna, and the 5.8GHz transceiver module is to connect the base station on the directional antenna; The APIII orientation point converges point.
2. the method for utilizing general wlan access point to make up ductile wlan network as claimed in claim 1 is characterized in that, and is right by the basic combination that universal AP is constructed as follows,
Substantially make up A:API-APII, API uses a frequency range to be equipped with omnidirectional antenna and covers the end user, another frequency range of API be equipped with directional antenna upwards collection be linked to the APIII that converges usefulness, the signal that transmitted by API this moment can have access to spider lines, also can be sent to next wireless network by another transceiver of APIII;
Substantially make up B:APII-APIII, the directional antenna that APII uses a frequency range to be equipped with covers the zone of some appointments, simultaneously, another frequency range of APII is equipped with directional antenna and is connected to the APIII that converges usefulness, the signal that transmitted by APII this moment can have access to spider lines, also can be sent to next wireless network by another transceiver of APIII;
Substantially make up C:API-APII, the omnidirectional antenna that API uses a frequency range to be equipped with covers the end user, another frequency range of API is equipped with directional antenna and is connected to APII, and APII forwards a signal to next wireless network by another frequency range after receiving the signal that API sends;
Substantially make up D:API-API, the omnidirectional antenna that two API use a frequency range to be equipped with covers end users, and two API use another frequency range to be equipped with directional antenna and are connected to each other, and making between two wireless networks can mutual communication;
Substantially make up E:APII-APII, two APII use same frequency range to make and can communicate each other, and simultaneously, two APII use another frequency range to connect different wireless networks; Utilize the built up construction that it is right that several differences are closed basic combination to make up ductile wlan network.
3. the method for utilizing general wlan access point to make up ductile wlan network as claimed in claim 1, it is characterized in that: use five kinds of general dual-mode wireless accessing points composition to make up substantially, make up B substantially, make up C substantially A, substantially make up D, the method of the WLAN (wireless local area network) that structure can infinitely extend is arranged in pairs or groups in basic combination according to actual conditions to E.
4. as claim 1 or the 2 or 3 described methods of utilizing general wlan access point to make up ductile wlan network, it is characterized in that: the antenna that networking person uses orientation or omni-directional can be independently for the AP of each type, for each makes up the given coverage of wireless network to making up substantially.
5. as claim 1 or the 2 or 3 described methods of utilizing general wlan access point to make up ductile wlan network, it is characterized in that: on connect transmitter transmission radius should with cover user transmitter transmission radius and suitably mate, with balance area coverage and blind area area, wherein adjustable parameter is: (1) transmitting power, (2) receiving sensitivity, (3) antenna gain connects and covers user's working frequency range on (4).
6. as claim 1 or the 2 or 3 described methods of utilizing general wlan access point to make up ductile wlan network, it is characterized in that: make full use of and have a plurality of zero lap channels on the same WLAN frequency range, and a plurality of minimum band overlapping channels, at adjacent area arrangement and use zero lap channel or minimum overlapping channel as far as possible.
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| CN101938751A (en) * | 2009-07-03 | 2011-01-05 | 京信通信系统（中国）有限公司 | Wireless access network system |
| CN101304381B (en) * | 2008-07-03 | 2011-08-31 | 中国移动通信集团设计院有限公司 | Method, system and apparatus for transmitting files of P2P network |
| CN102256336A (en) * | 2011-07-06 | 2011-11-23 | 华为终端有限公司 | Method, device and system for combined use of wireless fidelity (WiFi) access points |
| CN101554023B (en) * | 2006-11-24 | 2012-01-11 | 索尼爱立信移动通讯有限公司 | A portable communication device with an improved AD-HOC connectivity |
| CN101765229B (en) * | 2008-12-25 | 2012-07-25 | 上海寰创通信科技股份有限公司 | Method for solving WLAN network coverage blind area by terminal relay |
| CN102970056A (en) * | 2012-11-20 | 2013-03-13 | 无锡乾煜信息技术有限公司 | Equipment for converting WLAN (Wireless Local Area Network) wireless signal from 5.8G frequency band to 2.4G frequency band |
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| CN101554023B (en) * | 2006-11-24 | 2012-01-11 | 索尼爱立信移动通讯有限公司 | A portable communication device with an improved AD-HOC connectivity |
| CN101304381B (en) * | 2008-07-03 | 2011-08-31 | 中国移动通信集团设计院有限公司 | Method, system and apparatus for transmitting files of P2P network |
| CN101765229B (en) * | 2008-12-25 | 2012-07-25 | 上海寰创通信科技股份有限公司 | Method for solving WLAN network coverage blind area by terminal relay |
| CN101938751B (en) * | 2009-07-03 | 2014-08-20 | 京信通信系统（中国）有限公司 | Wireless access network system |
| CN101938751A (en) * | 2009-07-03 | 2011-01-05 | 京信通信系统（中国）有限公司 | Wireless access network system |
| CN102256336A (en) * | 2011-07-06 | 2011-11-23 | 华为终端有限公司 | Method, device and system for combined use of wireless fidelity (WiFi) access points |
| CN102256336B (en) * | 2011-07-06 | 2015-09-09 | 华为终端有限公司 | The methods, devices and systems that a kind of WiFi access point combinationally uses |
| CN102970056A (en) * | 2012-11-20 | 2013-03-13 | 无锡乾煜信息技术有限公司 | Equipment for converting WLAN (Wireless Local Area Network) wireless signal from 5.8G frequency band to 2.4G frequency band |
| CN102970056B (en) * | 2012-11-20 | 2015-02-04 | 无锡乾煜信息技术有限公司 | Equipment for converting WLAN (Wireless Local Area Network) wireless signal from 5.8G frequency band to 2.4G frequency band |
| CN106658648A (en) * | 2016-04-01 | 2017-05-10 | 郭燕 | Intelligent wireless relay system and access method |
| CN106412957A (en) * | 2016-10-20 | 2017-02-15 | 成都米风通信技术有限公司 | WiFi chip-based television white spectrum communication system spectrum allocation method |
| CN106412957B (en) * | 2016-10-20 | 2020-05-15 | 成都米风感知科技有限公司 | Television white spectrum communication system spectrum allocation method based on WiFi chip |
| CN107018083A (en) * | 2016-11-17 | 2017-08-04 | 中华物联网股份有限公司 | Multi-multipoint packet-switched network system and packet-switched wireless networks Wireless Router |
| CN111741473A (en) * | 2020-05-15 | 2020-10-02 | 深圳市华成峰科技有限公司 | Method and device for controlling wireless coverage and network security |
| CN111741473B (en) * | 2020-05-15 | 2023-04-18 | 深圳市华成峰科技有限公司 | Method and device for controlling wireless coverage and network security |
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