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CN103166686B - The intelligence being applied to room point WLAN (wireless local area network) divides wireless access system, device and method - Google Patents

The intelligence being applied to room point WLAN (wireless local area network) divides wireless access system, device and method Download PDF

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CN103166686B
CN103166686B CN201310066743.4A CN201310066743A CN103166686B CN 103166686 B CN103166686 B CN 103166686B CN 201310066743 A CN201310066743 A CN 201310066743A CN 103166686 B CN103166686 B CN 103166686B
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frequency signal
signal stream
signal streams
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CN103166686A (en
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黄如希
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Ruijie Networks Co Ltd
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Fujian Star Net Communication Co Ltd
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Abstract

The invention discloses a kind of intelligence being applied to room point WLAN (wireless local area network) and divide wireless access system, device and method, this system comprises AP and M antenna, M=k × N, N >=2, k >=1, M antenna lays respectively at k Indoor environment, every N number of antenna is positioned at same Indoor environment, connected by feeder line between AP and antenna, baseband signal to be sent is carried out space-time code and is obtained N number of sub-baseband signal streams by AP, this N number of sub-baseband signal streams is modulated into N number of radiofrequency signal stream, and respectively each radiofrequency signal flow point is made into k way radiofrequency signal stream, one way radiofrequency signal stream of each radiofrequency signal stream corresponds to the corresponding antenna of each Indoor environment, the K way radiofrequency signal stream each radiofrequency signal flow assignment obtained sends to antenna corresponding in each Indoor environment, N number of space channel can be formed at same Indoor environment, the space channel capacity that WLAN wireless access is divided in room can be improved, improve the availability of frequency spectrum.

Description

Intelligent distribution wireless access system, device and method applied to indoor distribution wireless local area network
Technical Field
The present invention relates to wireless communication systems, and in particular, to an intelligent distribution wireless access system, an intelligent distribution wireless access device, an intelligent distribution wireless access method, and a network device, which are applied to a wireless local area network for indoor distribution.
Background
With the increasing maturity of wireless network technology, wireless networks have become accepted by more and more enterprise users. The introduction of the wireless network provides a novel network application platform for enterprises and individuals, and creates a wireless free working space for the enterprises. Wireless networks play an important role from the everyday office environment to cross-regional network interconnection.
Currently, a Wireless Local Area Network (WLAN) becomes a hot spot in wireless network technology. A WLAN is a local area network that is not connected by any wire or transmission cable, but uses Radio Frequency (RF) technology as a medium for data transmission through radio waves, and the transmission distance is generally only several tens of meters. The backbone network of the WLAN generally uses a wired Cable (Cable), and WLAN users access the WLAN through one or more Access Points (APs).
Indoor wireless network signal coverage for WLANs typically employs a deployment scheme for installation and a deployment scheme for indoor distribution.
In the indoor distribution deployment scheme, the AP is installed in a weak current room or a corridor ceiling of a building, a power distribution circuit comprising a power divider, a coupler, a feeder line, an antenna positioned in a building room, a passive accessory and the like is adopted to be connected with the AP, and a radio frequency signal output by the AP is introduced into rooms of a plurality of building rooms to realize the coverage of indoor wireless signals. This approach has the following disadvantages: firstly, radio frequency signals output by the WLAN pass through various power dividers, couplers, cables, passive devices and feeders, and have obvious attenuation effects on the radio frequency signals, so that the signals reach different strengths of various antennas, and the signal coverage effects are uneven; secondly, the commonly adopted passive fittings are general fittings, the bandwidth is too large, the anti-interference performance is poor, and the passive fittings are easily influenced by 2G and 3G signals; thirdly, the materials are many, the types of accessories are many, the deployment cost is high, and the construction difficulty is high.
A wireless access system applied to a cellular WLAN can solve the above problems. Fig. 1 shows a block diagram of a wireless access system applied to a cellular WLAN, the system including an AP11 and at least one antenna 12, one antenna 12 being located in a building room, and an AP11 and each antenna 12 being connected by a feeder 13.
The AP11 converts a digital signal from a wireless bridge or other control device into a radio frequency signal to be transmitted, distributes the radio frequency signal to be transmitted into at least one sub-radio frequency signal having the same number of paths as the antennas 12, and correspondingly transmits one sub-radio frequency signal to one antenna 12. The antenna 12 transmits the received radio frequency signal.
The AP shown in fig. 1 can distribute power of a dual-frequency signal to be transmitted, and provide signal coverage of the dual-frequency signal in a building room at the same time, and the signal strength of the dual-frequency signal is not attenuated by the obstruction of the building wall, so that the signal coverage is uniform in the space where the antenna is located, the signal interference among the APs is small, and the interference by other communication systems is small.
However, the AP shown in fig. 1 can only operate in a single-stream mode, and only one output signal can be provided in one building space, that is, the AP can only operate in a single-output mode, which results in limited spatial channel capacity and low spectrum utilization provided by the system shown in fig. 1.
Disclosure of Invention
In view of this, embodiments of the present invention provide an intelligent wireless access system, an apparatus and a method for a indoor wireless local area network, and a network device, so as to solve the problems of limited spatial channel capacity and low spectrum utilization rate provided by a wireless access system for an indoor WLAN in the prior art.
The technical scheme of the embodiment of the invention is as follows:
an intelligent wireless access system applied to indoor wireless local area networks, comprising: the access point AP and M antennas, wherein M is k multiplied by N, N is a natural number which is greater than or equal to 2, k is a natural number, the M antennas are respectively positioned in k building rooms, every N antennas are positioned in the same building room, and the AP and the antennas are connected through a feeder line; the AP is used for obtaining N sub-baseband signal streams by space-time coding a baseband signal stream to be transmitted, modulating the N sub-baseband signal streams into N radio frequency signal streams, respectively distributing each radio frequency signal stream into K paths of sub-radio frequency signal streams, wherein one path of sub-radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room, and transmitting the K paths of sub-radio frequency signal streams obtained by distributing each radio frequency signal stream to the corresponding antenna in each building room; the antenna is used for transmitting the sub radio frequency signal stream.
An intelligent distribution wireless access device applied to indoor distribution wireless local area network, comprising: the encoding module is used for carrying out space-time encoding on a baseband signal stream to be transmitted to obtain N sub-baseband signal streams; the modulation distribution module is used for modulating the N sub-baseband signal streams obtained by the coding of the coding module into N radio frequency signal streams and distributing each radio frequency signal stream into k paths of sub-radio frequency signal streams respectively, wherein one path of sub-radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room; the transmitting module is used for transmitting the K paths of sub radio frequency signal streams obtained by distributing each radio frequency signal stream to corresponding antennas in each building room; wherein N is a natural number greater than or equal to 2, and k is a natural number.
A network device comprises the intelligent distribution wireless access device applied to the indoor distribution wireless local area network.
An intelligent wireless access method applied to a room division wireless local area network comprises the following steps: carrying out space-time coding on a baseband signal stream to be transmitted to obtain N sub-baseband signal streams; wherein N is a natural number greater than or equal to 2; modulating the N sub-baseband signal streams into N radio frequency signal streams, and respectively distributing each radio frequency signal stream into k paths of sub-radio frequency signal streams, wherein one path of sub-radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room; wherein k is a natural number; and sending the K paths of sub radio frequency signal streams obtained by distributing each radio frequency signal stream to corresponding antennas in each building.
An intelligent wireless access system applied to indoor wireless local area networks, comprising: the access point AP and M antennas, wherein M is k multiplied by N, N is a natural number which is greater than or equal to 2, k is a natural number, the M antennas are respectively positioned in k building rooms, every N antennas are positioned in the same building room, and the AP and the antennas are connected through a feeder line; the AP is configured to perform space-time coding on a baseband signal stream to be transmitted to obtain a first sub-baseband signal stream group and a second sub-baseband signal stream group, where the first sub-baseband signal stream group and the second sub-baseband signal stream group both include N sub-baseband signal streams, and corresponding sub-baseband signal streams in the first sub-baseband signal stream group and the second sub-baseband signal stream group are the same; modulating N sub-baseband signal streams in the first sub-baseband signal stream group into N first radio frequency signal streams, and respectively distributing each first radio frequency signal stream into k paths of first sub-radio frequency signal streams, wherein one path of first sub-radio frequency signal stream of each first radio frequency signal stream corresponds to a corresponding antenna in each building room; modulating N sub-baseband signal streams in the second sub-baseband signal stream group into N second radio frequency signal streams, and respectively distributing each second radio frequency signal stream into k paths of second sub-radio frequency signal streams, wherein one path of second sub-radio frequency signal stream of each second radio frequency signal stream corresponds to a corresponding antenna in each building room; merging and sending K paths of first sub radio frequency signal streams obtained by distributing each first radio frequency signal stream and K paths of second sub radio frequency signal streams obtained by distributing each second radio frequency signal stream to corresponding antennas in each building room; the antenna is configured to send the received one path of the first sub radio frequency signal stream and the one path of the second sub radio frequency signal stream.
An intelligent distribution wireless access device applied to indoor distribution wireless local area network, comprising: the encoding module is configured to perform space-time coding on a baseband signal stream to be transmitted to obtain a first sub-baseband signal stream group and a second sub-baseband signal stream group, where the first sub-baseband signal stream group and the second sub-baseband signal stream group both include N sub-baseband signal streams, and corresponding sub-baseband signal streams in the first sub-baseband signal stream group and the second sub-baseband signal stream group are the same; the first modulation distribution module is used for modulating N sub-baseband signal streams in the first sub-baseband signal stream group from the coding module into N first radio frequency signal streams and respectively distributing each first radio frequency signal stream into k paths of first sub-radio frequency signal streams, wherein one path of first sub-radio frequency signal stream of each first radio frequency signal stream corresponds to a corresponding antenna in each building room; a second modulation distribution module, configured to modulate N sub-baseband signal streams in the second sub-baseband signal stream group from the encoding module into N second radio-frequency signal streams, and respectively distribute each second radio-frequency signal stream into k paths of second sub-radio-frequency signal streams, where one path of second sub-radio-frequency signal stream of each second radio-frequency signal stream corresponds to a corresponding antenna in each building room; and the transmitting module is used for merging and transmitting the K paths of first sub radio frequency signal streams obtained by distributing each first radio frequency signal stream by the first modulation distribution module and the K paths of second sub radio frequency signal streams obtained by distributing each second radio frequency signal stream by the second modulation distribution module to corresponding antennas in each building room.
A network device comprises the intelligent distribution wireless access device applied to the indoor distribution wireless local area network.
An intelligent wireless access method applied to a room division wireless local area network comprises the following steps: the method comprises the steps that space-time coding is carried out on a baseband signal stream to be transmitted to obtain a first sub-baseband signal stream group and a second sub-baseband signal stream group, the first sub-baseband signal stream group and the second sub-baseband signal stream group respectively comprise N sub-baseband signal streams, and corresponding sub-baseband signal streams in the first sub-baseband signal stream group and the second sub-baseband signal stream group are the same; modulating N sub-baseband signal streams in the first sub-baseband signal stream group into N first radio frequency signal streams, and respectively distributing each first radio frequency signal stream into k paths of first sub-radio frequency signal streams, wherein one path of first sub-radio frequency signal stream of each first radio frequency signal stream corresponds to a corresponding antenna in each building room; modulating N sub-baseband signal streams in the second sub-baseband signal stream group into N second radio frequency signal streams, and respectively distributing each second radio frequency signal stream into k paths of second sub-radio frequency signal streams, wherein one path of second sub-radio frequency signal stream of each second radio frequency signal stream corresponds to a corresponding antenna in each building room; and merging the K paths of first sub radio frequency signal streams obtained by distributing each first radio frequency signal stream and the K paths of second sub radio frequency signal streams obtained by distributing each second radio frequency signal stream and sending the merged signals to corresponding antennas in each building.
The intelligent wireless access system applied to the indoor WLAN comprises an AP and M antennas, wherein M is K multiplied by N, N is a natural number which is more than or equal to 2, K is a natural number, the M antennas are respectively positioned in K building rooms, each N antenna is positioned in the same building room, the AP is connected with the antennas through a feeder line, the AP carries out space-time coding on a baseband signal to be transmitted to obtain N sub baseband signal streams, the N sub baseband signal streams are modulated into N radio frequency signal streams, each radio frequency signal stream is respectively distributed into K sub radio frequency signal streams, one sub radio frequency signal stream of each radio frequency signal stream corresponds to one corresponding antenna in each building room, the K sub radio frequency signal streams distributed by each radio frequency signal stream are transmitted to the corresponding antenna in each building room, the N antennas positioned in the same building room respectively transmit the received N sub radio frequency signal streams, n space channels can be formed indoors in the same building, the space channel capacity of indoor WLAN wireless access can be improved, and the spectrum utilization rate can be improved, so that the problems that in the prior art, the space channel capacity provided by a wireless access system applied to indoor WLAN is limited, and the spectrum utilization rate is low can be solved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
Fig. 1 is a block diagram of a wireless access system applied to a cellular WLAN in the prior art;
fig. 2 is a block diagram of an intelligent distribution wireless access system applied to a indoor distribution WLAN according to an embodiment of the present invention;
fig. 3 is a flowchart of an intelligent wireless access method applied to a indoor WLAN according to an embodiment of the present invention;
fig. 4 is a block diagram of an intelligent wireless access device applied to a indoor WLAN according to an embodiment of the present invention;
FIG. 5 is a block diagram of a specific implementation of a modulation allocation module in the apparatus shown in FIG. 4;
FIG. 6 is another block diagram of a specific implementation of a modulation allocation module in the apparatus shown in FIG. 4;
fig. 7 is another working flow of the smart distribution wireless access method applied to the indoor distribution WLAN according to the embodiment of the present invention;
fig. 8 is another block diagram of an intelligent wireless access device applied to a indoor WLAN according to an embodiment of the present invention;
fig. 9 is another working flow of the smart distribution wireless access method applied to the indoor distribution WLAN according to the embodiment of the present invention;
fig. 10 is another block diagram of an intelligent wireless access device applied to a indoor WLAN according to an embodiment of the present invention;
fig. 11 is another working flow of the smart distribution wireless access method applied to the indoor distribution WLAN according to the embodiment of the present invention;
fig. 12 is another block diagram of an intelligent wireless access device applied to a cellular WLAN according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.
Aiming at the problems of limited space channel capacity and low spectrum utilization rate provided by a wireless access system applied to a room division WLAN in the prior art, the embodiment of the invention provides an intelligent division wireless access scheme applied to a room division wireless local area network, which is used for solving the problems.
In the embodiment of the present invention, "intelligent distribution" means intelligent distribution of signals, and "intelligent distribution wireless access system applied to a room-based WLAN" means a wireless access system applied to a room-based WLAN and intelligently distributing signals.
The following specifically describes the technical solution of the embodiment of the present invention.
Example one
Fig. 2 shows a structure of a smart distribution wireless access system applied to a cellular WLAN according to an embodiment of the present invention, where the system includes:
the antenna system comprises an AP21 and M antennas 22, wherein M is k multiplied by N, N is a natural number which is greater than or equal to 2, k is a natural number, the M antennas 22 are respectively positioned in k building rooms, each N antenna 22 is positioned in the same building room, and the AP21 is connected with the antennas 22 through a feeder 23;
the AP21 is configured to perform space-time coding on a baseband signal stream to be transmitted to obtain N sub-baseband signal streams, modulate the N sub-baseband signal streams into N radio frequency signal streams, and respectively allocate each radio frequency signal stream into k paths of sub-radio frequency signal streams, where one path of sub-radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room, and transmit the k paths of sub-radio frequency signal streams allocated to each radio frequency signal stream to the corresponding antenna in each building room;
the AP21 may encode a baseband signal to be transmitted by using a space-time coding method in the prior art to obtain N sub-baseband signal streams;
the AP21 distributes each radio frequency signal stream of the N radio frequency signal streams into k paths of sub radio frequency signal streams, which specifically includes: the AP21 distributes each radio frequency signal stream in the N radio frequency signal streams obtained by modulation into k paths of sub radio frequency signal streams with the same power; or, dividing each radio frequency signal stream into k paths of sub radio frequency signal streams, wherein the power values of the sub radio frequency signal streams accord with a preset proportional relation; or, dividing each radio frequency signal stream into k paths of sub radio frequency signal streams with preset power values; the working frequency band of the radio frequency signal flow obtained by modulation comprises: 2.4GHZ to 2.4835GHz, or 5.8GHZ to 5.85GHz
An antenna 22 for transmitting the sub-rf signal stream from the AP 21.
Fig. 3 shows a work flow of the smart wireless access method applied to the indoor WLAN according to the embodiment of the present invention, that is, fig. 3 shows a work flow of the AP21 shown in fig. 2, where the work flow includes:
step 301, the AP21 performs space-time coding on the baseband signal stream to be transmitted to obtain N sub-baseband signal streams, for example, the N sub-baseband signal streams are S1、S2、……、SN；
Specifically, the method of space-time coding by the AP21 may be a space-time coding method in the related art;
step 302, the AP21 modulates the N sub baseband signal streams into N radio frequency signal streams, and respectively distributes each radio frequency signal stream into k sub radio frequency signal streams, where one sub radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room;
for example, N sub-baseband signal streams S1、S2、……、SNModulated into N radio-frequency signal streams F1、F2、……、FNA radio frequency signal stream F1Divided into k sub-RF signal streams F11、F12、……、F1kA radio frequency signal stream F2Divided into k sub-RF signal streams F21、F22、……、F2kFor the same reason, the radio frequency signal flow FNDivided into k sub-RF signal streams FN1、FN2、……、FNkThen, the sub-rf signal flow matrix composed of k sub-rf signal flows of each of the N rf signal flows is [ FNk]；
Specifically, the AP21 distributes each of the N radio frequency signal streams obtained by modulation into k paths of sub radio frequency signal streams with the same power; or, dividing each radio frequency signal stream into k paths of sub radio frequency signal streams, wherein the power values of the sub radio frequency signal streams accord with a preset proportional relation; or, dividing each radio frequency signal stream into k paths of sub radio frequency signal streams with preset power values; the working frequency band of the radio frequency signal flow obtained by modulation comprises: 2.4GHZ to 2.4835GHZ, or 5.8GHZ to 5.85 GHZ;
step 303, the AP21 sends the k paths of sub radio frequency signal streams obtained by allocating each radio frequency signal stream to the corresponding antenna in each building room, so that the N antennas located in the same building room respectively send the received N sub radio frequency signal streams.
For example, the interior of the respective antenna in each building room is identified as T1、T2、……、TNThen, the numbers of k × N antennas in k building rooms are: the antenna in the 1 st building is marked as T11、T12、……、T1NAnd the 2 nd indoor antenna of the building is marked as T21、T22、……、T2NSimilarly, the antenna in the kth building is marked as Tk1、Tk2、……、TkNThen the array of kXN antennas is [ T ]kN](ii) a The radio frequency signal stream F1 corresponds to T in each building room1Antenna, radio frequency signal flow F2Corresponding to T in each building room2Antenna, and so on, radio frequency signal flow FNCorresponding to T in each building roomNAntenna, then, for the radio frequency signal flow F1Distributing to obtain k paths of sub radio frequency signal flows F11、F12、……、F1kRespectively corresponding to T in each building room1Antenna for transmitting the sub-RF signal stream F11Is sent to T11Antenna, sub-radio frequency signal flow F12Is sent to T21Antenna … …, sub-radio frequency signal flow F1kIs sent to Tk1Antenna for radio frequency signal flow F2Distributing to obtain k paths of sub radio frequency signal flows F21、F22、……、F2kRespectively corresponding to T in each building room2Antenna for transmitting the sub-RF signal stream F21Is sent to T12Antenna, sub-radio frequency signal flow F22Is sent to T22Antenna … …, sub-radio frequency signal flow F2kIs sent to Tk2Antenna, and so on, for RF signal stream FNDistributing to obtain k paths of sub radio frequency signal flows FN1、FN2、……、FNkRespectively corresponding to T in each building roomNAntenna for transmitting the sub-RF signal stream FN1Is sent to T1NAntenna, sub-radio frequency signal flow FN2Is sent to T2NAntenna … …, sub-radio frequency signal flow FNkIs sent to TkNAn antenna.
As can be seen from the system shown in fig. 2 and the operating principle of AP21, N antennas are disposed in each of k building rooms to obtain a k × N antenna matrix, N × k paths of sub radio frequency signal streams to be transmitted are obtained by performing space-time coding and modulation allocation on baseband signals to be transmitted through AP21, and the N × k paths of sub radio frequency signals to be transmitted are correspondingly transmitted to the k × N antennas, so that N spatial output channels can be formed in the same building room, spatial channel capacity of indoor WLAN wireless access is increased, spectrum utilization is increased, and thus the problems of limited spatial channel capacity and low spectrum utilization provided by a wireless access system applied to an indoor WLAN in the prior art can be solved.
Preferably, in step 302, the AP21 may further perform filtering on the N modulated radio frequency signal streams, allocate each of the N filtered radio frequency signal streams to k sub-radio frequency signal streams, and isolate a frequency band other than the predetermined operating frequency band through filtering operation, so as to further improve the anti-interference performance of the AP 21;
preferably, in step 302, the AP21 may further perform power amplification on the k allocated sub rf signal streams respectively to obtain sub rf signal streams with transmission power meeting the transmission requirement.
Based on the same inventive concept, the embodiment of the invention also provides an intelligent distribution wireless access device applied to the indoor distribution WLAN; preferably, the apparatus is located in an AP.
Fig. 4 shows a structure of a smart distribution wireless access apparatus applied to a cellular WLAN according to an embodiment of the present invention, where the apparatus includes:
an encoding module 41, configured to perform space-time coding on a baseband signal stream to be transmitted to obtain N sub-baseband signal streams, where the N sub-baseband signal streams are S as described above1、S2、……、SN(ii) a Specifically, the encoding module 41 may use a space-time coding method in the prior art for encoding;
a modulation distribution module 42, connected to the coding module 41, for modulating the N sub-baseband signal streams obtained by coding in the coding module 41 into N radio frequency signal streams, and respectively distributing each radio frequency signal stream into k sub-radio frequency signal streams, where one sub-radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room, and as described above, k of each radio frequency signal stream of the N radio frequency signal streams is used forThe signal flow matrix formed by the radio frequency signal flows of the road is FNk](ii) a Specifically, the modulation allocation module 42 allocates each radio frequency signal stream in the N radio frequency signal streams obtained by modulation to k paths of sub radio frequency signal streams with the same power; or, dividing each radio frequency signal stream into k paths of sub radio frequency signal streams, wherein the power values of the sub radio frequency signal streams accord with a preset proportional relation; or, dividing each radio frequency signal stream into k paths of sub radio frequency signal streams with preset power values; the operating frequency band of the modulated rf signal stream (or sub-rf signal stream) includes: 2.4GHZ to 2.4835GHZ, or 5.8GHZ to 5.85 GHZ;
a transmitting module 43, connected to the modulation distribution module 42, and configured to transmit the k paths of sub radio frequency signal streams, which are obtained by distributing each radio frequency signal stream by the modulation distribution module 42, to a corresponding antenna in each building indoor; i.e. a sub-radio frequency signal flow matrix [ F ]Nk]Correspondingly to the antenna matrix TkN]。
The working principle of the device shown in fig. 4 is shown in fig. 3, and will not be described in detail here.
Through the device shown in fig. 4, nxk sub radio frequency signal streams can be provided for kxn antennas located indoors in a building, so that multi-channel output is realized, N spatial output channels can be formed indoors in the same building, the spatial channel capacity of indoor WLAN wireless access is improved, the spectrum utilization rate is improved, and the problems that in the prior art, the spatial channel capacity provided by a wireless access system applied to indoor WLAN is limited, and the spectrum utilization rate is low can be solved.
In the course of specific implementation, the modulation allocation module 42 may be implemented by two ways, and two implementations of the modulation allocation module 42 are listed below.
First, as shown in fig. 5, the modulation allocation module 42 may include N parallel modulation allocation sub-modules 421……NEach modulation allocation sub-module 42iCorrespondingly to a sub-baseband signal stream SiPerforms a modulation and assignment process, i =1, … …, N, each modulation assignment submodule 42iComprises k subProcessing module 42ip，p=1, … …, k, each sub-processing module 42ipSeparately converting a sub-band signal stream Si into a sub-radio frequency signal stream FipI.e. each modulation allocation submodule 42iConverting a sub-band signal stream Si into k sub-radio frequency signal streams Fi1、Fi2、……、FikFor example, a modulation allocation sub-module 421Sub-baseband signal stream S1Modulating and distributing to obtain sub-RF signal flow F11、F12、……、F1kSimilarly, the modulation assignment sub-module 42NSub-baseband signal stream SNModulating and distributing to obtain sub-RF signal flow FN1、FN2、……、FNk. Wherein each modulation allocation submodule 42iMay be implemented by a logic gate array chip.
Second, as shown in fig. 6, the modulation allocation module 42 may include N parallel modulation allocation sub-modules 421……NEach modulation distribution submodule correspondingly modulates and distributes one sub-baseband signal stream, and each modulation distribution submodule comprises a modulation submodule 421iAnd an assignment sub-module 422iModulation submodule 421iSub baseband signal SiModulating to obtain radio frequency signal flow FiDistribution submodule 422iTo modulation submodule 421iModulating to obtain a radio frequency signal flow FiPerforming power distribution to obtain k paths of sub-radio frequency signal flows Fi1、Fi2、……、FikModulation submodule 421iThe sub-module 422 can be distributed by the existing design combination of the radio frequency modulation chip or the lumped elementiMay be implemented by an existing power distribution chip, or the distribution submodule 422iThe method is realized in a PCB wiring mode.
In the first way, the sub-module 42 can be allocated by modulationiEach sub-processing module 42 inipEach sub-processing module 42 directly and independently converting a sub-baseband signal stream into a sub-radio frequency signal streamipThe processing speed is high and the efficiency is high.
Through the second mode, the modulation distribution module 42 can be conveniently realized, the realization difficulty is low, and the equipment cost is low.
Preferably, in the first mode, each sub-processing module 42 can also be provided withipIntermediate pair processed sub-radio frequency signal flow FipFiltering and power amplifying are performed, in the second embodiment, in the modulation submodule 421iAnd an assignment sub-module 422iOn the basis of the above-mentioned signal processing unit, a functional unit for making filtering treatment and functional amplification treatment is added so as to obtain the sub-radio-frequency signal flow FipAnd carrying out filtering and power amplification processing.
Based on the same inventive concept, the embodiment of the present invention further provides a network device, which includes the smart distribution wireless access apparatus applied to the indoor distribution WLAN as shown in fig. 4, and preferably, the network device may be an AP.
Example two
On the basis of the system shown in fig. 2, the AP21 in the smart distribution wireless access system applied to the indoor distribution WLAN according to the embodiment of the present invention may further process the signal received through the antenna 22.
Fig. 7 shows a workflow of an intelligent distributed wireless access method applied to a distributed WLAN according to an embodiment of the present invention, where the method is used for an AP to process a received signal, and the method includes:
step 701, the AP21 receives sub radio frequency signal streams from N antennas in each building room;
step 702, the AP21 demodulates sub radio frequency signals received from corresponding antennas of the N antennas in each building room into nxk radio frequency signal streams;
step 703, the AP21 performs space-time decoding on the N × k demodulated radio frequency signal streams to obtain baseband signal streams.
For example, the identity of each building room is T1Corresponds to the antenna marked as T2Corresponds to the antenna(s), and so on, is labeled as TNThe antenna of (1) corresponds to; then, the sub-rf signals received from the corresponding antennas of the N antennas in each building room are XNk]A sub-radio frequency signal [ X ]Nk]Demodulation into a stream of radio frequency signals YNk]And to the radio frequency signal stream [ YNk]And performing space-time decoding to obtain a baseband signal.
Based on the same inventive concept, fig. 8 shows a structure of a smart distribution wireless access device applied to a cellular WLAN according to an embodiment of the present invention, where the device is located in an AP, and the AP further includes, on the basis of the device shown in fig. 4: a receiving module 44, a demodulating module 45, and a decoding module 46;
a receiving module 44 for receiving sub-rf signal streams from N antennas in each building room;
a demodulation module 45, connected to the receiving module 44, for demodulating the sub-radio frequency signals received by the receiving module 44 from the corresponding antenna of the N antennas in each building room into N × k radio frequency signal streams;
and a decoding module 46, connected to the demodulating module 45, for performing space-time decoding on the nxk radio frequency signal streams demodulated by the demodulating module 45 to obtain baseband signal streams.
Therefore, the intelligent distribution wireless access system applied to the indoor distribution wireless local area network provided by the embodiment of the invention can form a plurality of effective output transmission channels and input transmission channels in a building, and can remarkably improve the space channel capacity of indoor distribution WLAN wireless access and improve the spectrum utilization rate.
Based on the same inventive concept, the embodiment of the present invention further provides a network device, which includes the smart distribution wireless access apparatus applied to the indoor distribution WLAN as shown in fig. 8, and preferably, the network device may be an AP.
EXAMPLE III
The first and second embodiments provide a room division WLAN wireless access system for wirelessly accessing a single frequency signal, and in the third embodiment, a room division WLAN wireless access system for wirelessly accessing a dual frequency signal is provided, and the structure of the system is the same as that of fig. 2, except that the operating principle and the internal structure of the AP21 in the third embodiment are different from those of the AP21 in the first or second embodiment.
The operation of the AP21 in the third embodiment will be described below.
Fig. 9 shows a workflow of the smart distribution wireless access method applied to the indoor distribution WLAN according to an embodiment of the present invention, including:
step 901, the AP21 performs space-time coding on the baseband signal stream to be transmitted to obtain two identical sub-baseband signal stream sets, that is, a first sub-baseband signal stream set and a second sub-baseband signal stream set, where the first sub-baseband signal stream set and the second sub-baseband signal stream set both include N sub-baseband signal streams, for example, the first sub-baseband signal stream set includes S1 1、S1 2、……、S1 NThe second sub-baseband signal stream set comprises S2 1、S2 2、……、S2 N，S1 1=S2 1、S1 2=S2 2、……、S1 N=S2 N(ii) a The AP21 may be encoded using space-time coding methods known in the art;
step 902, modulating the N sub-baseband signal streams in the first sub-baseband signal stream group into N first radio frequency signal streams by the AP21, and respectively allocating each first radio frequency signal stream into k paths of first sub-radio frequency signal streams, where one path of first sub-radio frequency signal stream of each first radio frequency signal stream corresponds to a corresponding antenna in each building room, and each first sub-radio frequency signal stream corresponds to a corresponding antenna in each building roomThe operating frequency bands of the streams are: 2.4GHZ to 2.4835 GHZ; for example, N sub-baseband signal streams S in the first set of sub-baseband signal streams1 1、S1 2、……、S1 NModulated into N first radio frequency signal streams F1 1、F1 2、……、F1 NA first radio frequency signal flow F1 1Divided into k first sub-RF signal streams F1 11、F1 12、……、F1 1kA first radio frequency signal flow F1 2Divided into k first sub-RF signal streams F1 21、F1 22、……、F1 2kSimilarly, the first radio frequency signal flow FNDivided into k first sub-RF signal streams F1 N1、F1 N2、……、F1 NkThen, a signal flow matrix composed of k first sub-rf signal flows of each of the N first rf signal flows is [ F1 Nk]；
And the AP21 modulates the N sub-baseband signal streams in the second sub-baseband signal stream group into N second radio frequency signal streams, and respectively allocates each second radio frequency signal stream into k paths of second sub-radio frequency signal streams, where one path of second sub-radio frequency signal stream of each second radio frequency signal stream corresponds to a corresponding antenna in each building room, and the operating frequency band of the second sub-radio frequency signal stream is: 5.8GHZ to 5.85GHZ, e.g., N sub-baseband signal streams S in the first set of sub-baseband signal streams2 1、S2 2、……、S2 NModulated into N second radio-frequency signal streams F2 1、F2 2、……、F2 NA second radio frequency signal stream F2 1Divided into k second sub-RF signal streams F2 11、F2 12、……、F2 1kA second radio frequency signal stream F2 2Divided into k second sub-RF signal streams F2 21、F2 22、……、F2 2kAnd, similarly, a second radio frequency signal stream F2 NDivided into k second sub-RF signal streams F2 N1、F2 N2、……、F2 NkThen, a signal flow matrix composed of k second sub-rf signal flows of each of the N second rf signal flows is [ F2 Nk]；
For example, as described above in step 303, the first radio frequency signal stream F1 1Corresponding to T in each building room1Aerial, i.e. first radio-frequency signal stream F1 1Distributing to obtain k paths of first sub radio frequency signal flows F1 11、F1 12、……、F1 1kRespectively corresponding to T in each building room1Antenna, first radio frequency signal flow F1 2Corresponding to T in each building room2Aerial, i.e. first radio-frequency signal stream F1 2Distributing to obtain k paths of first sub radio frequency signal flows F1 21、F1 22、……、F1 2kRespectively corresponding to T in each building room2Antenna, and so on, a first radio frequency signal stream F1 NCorresponding to T in each building roomNAerial, i.e. first radio-frequency signal stream F1 NDistributing to obtain k paths of first sub radio frequency signal flows F1 N1、F1 N2、……、F1 NkRespectively corresponding to T in each building roomNAntenna, and similarly, a second radio frequency signal stream F2 1Corresponding to T in each building room1Aerial, i.e. second radio-frequency signal stream F2 1Distributing to obtain k paths of second sub radio frequency signal flows F2 11、F2 12、……、F2 1kRespectively corresponding to T in each building room1Antenna, second radio frequency signal stream F2 2Corresponding to T in each building room2Aerial, i.e. second radio-frequency signal stream F2 2Distributing to obtain k paths of second sub radio frequency signal flows F2 21、F2 22、……、F2 2kRespectively corresponding to T in each building room2Antenna, and so on, a second radio frequency signal stream F2 NCorresponding to T in each building roomNAerial, i.e. second radio-frequency signal stream F2 NDistributing to obtain k paths of second sub radio frequency signal flows F2 N1、F2 N2、……、F2 NkRespectively corresponding to T in each building roomNAn antenna;
specifically, the AP21 distributes each of the N modulated first radio frequency signal streams into k paths of first sub radio frequency signal streams with the same power; or, dividing each first radio frequency signal stream into k paths of first sub radio frequency signal streams, wherein the power values of the k paths of first sub radio frequency signal streams accord with a preset proportional relation; or, dividing each first radio frequency signal stream into k paths of first sub radio frequency signal streams with a preset power value;
the AP21 distributes each of the N second radio frequency signal streams obtained by modulation into k paths of second sub radio frequency signal streams with the same power; or dividing each second radio frequency signal stream into k paths of second sub radio frequency signal streams, wherein the power values of the second sub radio frequency signal streams accord with a preset proportional relation; or, dividing each second radio frequency signal stream into k paths of second sub radio frequency signal streams with preset power values;
step 903, the AP21 merges and transmits the K paths of first sub radio frequency signal streams distributed to each first radio frequency signal stream and the K paths of second sub radio frequency signal streams distributed to each second radio frequency signal stream to the corresponding antennas in each building, that is, the sub radio frequency signal stream matrix [ F1 Nk]And [ F2 Nk]Correspondingly combined and sent to an antenna matrix TkN]And each antenna located in the same building room can send the received one path of first sub radio frequency signal stream and one path of second sub radio frequency signal stream.
For example, the k paths of the first sub-RF signalsFlow F1 11、F1 12、……、F1 1kAnd for k paths of second sub-radio frequency signal flow F2 11、F2 12、……、F2 1kRespectively and correspondingly combining T transmitted to each building indoor1Antenna, i.e. the first sub-RF signal stream F1 11And a second sub-stream F of radio frequency signals2 11Merged to be sent to T11Antenna for transmitting the first sub-RF signal stream F1 12And a second sub-stream F of radio frequency signals2 11Merged to be sent to T21An antenna … … for transmitting a first sub-RF signal stream F1 1kAnd a second sub-stream F of radio frequency signals2 1kMerged to be sent to Tk1The antenna is analogized in turn, and k paths of first sub radio frequency signal flows F are formed1 N1、F1 N2、……、F1 NkAnd k second sub-RF signal streams F2 N1、F2 N2、……、F2 NkRespectively and correspondingly combining T transmitted to each building indoorNAntenna, i.e. the first sub-RF signal stream F1 N1And a second sub-stream F of radio frequency signals2 N1Merged to be sent to T1NAntenna for transmitting the first sub-RF signal stream F1 N2And a second sub-stream F of radio frequency signals2 N2Is sent to T2NAn antenna … … for transmitting a first sub-RF signal stream F1 NkSecond sub-stream F of radio frequency signals2 NkIs sent to TkNAn antenna.
By the method shown in fig. 9, multi-channel output of dual-frequency signals can be realized in a building room, so that N spatial output channels of each frequency can be formed in the same building room, the spatial channel capacity of indoor WLAN wireless access is improved, the spectrum utilization rate is improved, and the problems of limited spatial channel capacity and low spectrum utilization rate provided by a wireless access system applied to indoor WLAN in the prior art can be solved.
Based on the same inventive concept, fig. 10 shows a structure of a smart distribution wireless access apparatus applied to a indoor distribution WLAN, the apparatus being used for accessing a dual-frequency signal, and the apparatus comprising:
the encoding module 101 is configured to perform space-time encoding on a baseband signal stream to be transmitted to obtain two identical sub-baseband signal stream groups, that is, a first sub-baseband signal stream group and a second sub-baseband signal stream group, where the first sub-baseband signal stream group and the second sub-baseband signal stream group both include N sub-baseband signal streams; specifically, the encoding module 101 may use a space-time coding method in the prior art to perform encoding;
a first modulation distribution module 102, connected to the encoding module 101, configured to modulate N sub-baseband signal streams in a first sub-baseband signal stream group obtained by encoding by the encoding module 101 into N first radio frequency signal streams, and respectively distribute each first radio frequency signal stream into k paths of first sub-radio frequency signal streams, where one path of the first sub-radio frequency signal stream of each first radio frequency signal stream corresponds to a corresponding antenna in each building room, and a working frequency band of each first sub-radio frequency signal stream is: 2.4GHZ to 2.4835 GHZ;
a second modulation and distribution module 103, connected to the encoding module 101, configured to modulate N sub-baseband signal streams in a second sub-baseband signal stream group from the encoding module 101 into N second radio frequency signal streams, and respectively distribute each second radio frequency signal stream into k paths of second sub-radio frequency signal streams, where one path of second sub-radio frequency signal stream of each second radio frequency signal stream corresponds to a corresponding antenna in each building room, and an operating frequency band of each second sub-radio frequency signal stream is: 5.8GHZ to 5.85 GHz;
specifically, the first modulation and distribution module 102 distributes each of the N first radio frequency signal streams obtained by modulation into k paths of first sub radio frequency signal streams with the same power; or, dividing each first radio frequency signal stream into k paths of first sub radio frequency signal streams, wherein the power values of the k paths of first sub radio frequency signal streams accord with a preset proportional relation; or, dividing each first radio frequency signal stream into k paths of first sub radio frequency signal streams with a preset power value;
the second modulation distribution module 103 distributes each of the N second radio frequency signal streams obtained by modulation into k paths of second sub-radio frequency signal streams with the same power; or dividing each second radio frequency signal stream into k paths of second sub radio frequency signal streams, wherein the power values of the second sub radio frequency signal streams accord with a preset proportional relation; or, dividing each second radio frequency signal stream into k paths of second sub radio frequency signal streams with preset power values;
a sending module 104, connected to the first modulation distribution module 102 and the second modulation distribution module 103, for merging the K paths of first sub-rf signal streams distributed to each first rf signal stream and the K paths of second sub-rf signal streams distributed to each second rf signal stream and sending the merged streams to corresponding antennas in each building, that is, the first sub-rf signal streams [ F [ ] in indoor environment of each building1 Nk]And a second sub-stream of radio frequency signals F2 Nk]Correspondingly combined and sent to an antenna matrix TkN]。
The working principle of the device shown in fig. 10 is shown in fig. 9, and will not be described in detail here. The specific implementation manners of the first modulation allocation module 102 and the second modulation allocation module 103 are the same as the specific implementation manner of the modulation allocation module 42 in fig. 4, and are not described herein again.
Through the device shown in fig. 10, multi-channel output of dual-frequency signals can be realized in a building room, so that N spatial output channels of each frequency can be formed in the same building room, the spatial channel capacity of indoor WLAN wireless access is improved, the spectrum utilization rate is improved, and the problems of limited spatial channel capacity and low spectrum utilization rate provided by a wireless access system applied to indoor WLAN in the prior art can be solved.
Based on the same inventive concept, the embodiment of the present invention further provides a network device, which includes the smart distribution wireless access apparatus applied to the indoor distribution WLAN as shown in fig. 10, and preferably, the network device may be an AP.
Example four
On the basis of the smart wireless access system applied to the indoor WLAN, provided by the third embodiment, the AP21 in the smart wireless access system applied to the indoor WLAN according to the third embodiment of the present invention may further process the signal received through the antenna 22.
Fig. 11 shows a workflow of an intelligent distributed wireless access method applied to a indoor distributed WLAN according to an embodiment of the present invention, where the method is used for an AP to process a received dual-frequency signal, and the method includes:
step 1101, AP21 receives a first sub-RF signal stream [ X ] from N antennas in each building room1 Nk]And a second sub-stream of radio frequency signals [ X ]2 Nk]；
Step 1102, AP21 demodulates a first sub rf signal stream received from a corresponding antenna of N antennas in each building room into nxk first rf signal streams Y1 Nk]And demodulating the second sub-streams of RF signals received from corresponding ones of the N antennas in each of the building rooms into Nxk streams of second RF signals [ Y [ ]2 Nk]；
Step 1103, the AP21 demodulates the obtained nxk first rf signal streams [ Y [ ]1 Nk]Performing space-time decoding to obtain a first baseband signal stream, and demodulating Nxk second radio frequency signal streams [ Y2 Nk]And performing space-time decoding to obtain a second baseband signal stream.
For example, the identification of AP21 in each building room is T1Corresponds to the antenna marked as T2Corresponds to the antenna(s), and so on, is labeled as TNThe antenna of (1) corresponds to; then, the first sub-rf signal received from the corresponding antenna of the N antennas in each building room is X1 Nk]The first sub-RF signal [ X ]1 Nk]Demodulated into a first radio frequency signal stream [ Y ]1 Nk]And for the first RF signal stream [ Y ]1 Nk]Space-time decoding is carried out to obtain a first baseband signal stream.
Similarly, the second sub-rf signal received by the AP21 from the corresponding antenna of the N antennas in each building room is X2 Nk]Second sub-radio frequency signal [ X ]2 Nk]Demodulated into a second radio frequency signal stream [ Y ]2 Nk]And for the second radio frequency signal stream [ Y2 Nk]And performing space-time decoding to obtain a second baseband signal stream.
Through the method shown in fig. 11, the smart wireless access system applied to the indoor WLAN of the invention can form a plurality of effective output transmission channels and input transmission channels of dual-frequency signals in a building, and can significantly improve the spatial channel capacity of the indoor WLAN wireless access and improve the spectrum utilization rate.
Based on the same inventive concept, fig. 12 shows another structure of an AP according to an embodiment of the present invention, where the apparatus is located in the AP, and on the basis of the apparatus shown in fig. 10, the AP further includes: a receiving module 105, a first demodulation module 106, a second demodulation module 107, and a decoding module 108;
the receiving module 105 is used for receiving a first sub-radio frequency signal stream [ X ] from N antennas in each building room1 Nk]And a second sub-stream of radio frequency signals [ X ]2 Nk]；
A first demodulation module 106 connected to the receiving module 105 for receiving the first sub-rf signals [ X ] received by the receiving module 1010 from the corresponding antenna of the N antennas in each building room1 Nk]Demodulated into Nxk first radio frequency signal streams, i.e. [ Y ]1 Nk]；
A second demodulation module 107 connected to the receiving module 105 for receiving the second sub-rf signals [ X ] received by the receiving module 1010 from the corresponding antenna of the N antennas in each building room2 Nk]Demodulated into Nxk second RF signal streams, i.e. [ Y ]2 Nk]；
A decoding module 108 connected to the first demodulation module 106 and the second demodulation module 107 for demodulating the nxk first rf signal streams [ Y ] obtained by the first demodulation module 1061 Nk]Performing space-time decoding to obtain a first baseband signal, and demodulating N × k second radio frequency signal streams [ Y ] obtained by the second demodulation module 1072 Nk]And performing space-time decoding to obtain a second baseband signal.
With the apparatus provided in fig. 12, a plurality of effective output transmission channels and input transmission channels for dual-band signals can be formed in the building, and spatial channel capacity of indoor WLAN radio access and spectrum utilization can be significantly improved.
Based on the same inventive concept, the embodiment of the present invention further provides a network device, which includes the smart distribution wireless access apparatus applied to the indoor distribution WLAN as shown in fig. 12, and preferably, the network device may be an AP.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (17)

1. An intelligent wireless access system applied to a room division wireless local area network, comprising: the access point AP and M antennas, wherein M is k multiplied by N, N is a natural number which is greater than or equal to 2, k is a natural number, the M antennas are respectively positioned in k building rooms, every N antennas are positioned in the same building room, and the AP and the antennas are connected through a feeder line;
the AP is used for obtaining N sub-baseband signal streams by space-time coding a baseband signal stream to be transmitted, modulating the N sub-baseband signal streams into N radio frequency signal streams, respectively distributing each radio frequency signal stream into K paths of sub-radio frequency signal streams, wherein one path of sub-radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room, and transmitting the K paths of sub-radio frequency signal streams obtained by distributing each radio frequency signal stream to the corresponding antenna in each building room;
the antenna is used for transmitting the sub radio frequency signal stream.
2. The system of claim 1, wherein the antenna is further configured to receive a sub-rf signal stream from a station;
the AP is further configured to receive sub radio frequency signal streams from the N antennas in each building room, demodulate the sub radio frequency signals received from the corresponding antennas in the N antennas in each building room into N × k radio frequency signal streams, and perform space-time decoding on the N × k radio frequency signal streams to obtain baseband signal streams.
3. The system according to claim 1 or 2, wherein the AP is specifically configured to:
dividing each radio frequency signal stream in the N radio frequency signal streams obtained by modulation into k paths of sub radio frequency signal streams with the same power; or,
dividing each radio frequency signal stream into k paths of sub radio frequency signal streams, wherein the power values of the sub radio frequency signal streams accord with a preset proportional relation; or,
and distributing each radio frequency signal stream into k paths of sub radio frequency signal streams with preset power values.
4. An intelligent distribution wireless access device applied to an indoor distribution wireless local area network, comprising:
the encoding module is used for carrying out space-time encoding on a baseband signal stream to be transmitted to obtain N sub-baseband signal streams;
a modulation distribution module, configured to modulate N sub-baseband signal streams obtained by encoding by the encoding module into N radio frequency signal streams, and respectively distribute each radio frequency signal stream into k paths of sub-radio frequency signal streams, where one path of sub-radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room, where the number of the buildings is k, and each N antennas are located in the same building room;
the transmitting module is used for transmitting the K paths of sub radio frequency signal streams obtained by distributing each radio frequency signal stream to corresponding antennas in each building room;
wherein N is a natural number greater than or equal to 2, and k is a natural number.
5. The apparatus of claim 4, further comprising:
a receiving module for receiving sub-radio frequency signal streams from N antennas in each building room;
a demodulation module, configured to demodulate the sub radio frequency signals received by the receiving module from corresponding antennas in the N antennas in each building room into N × k radio frequency signal streams;
and the decoding module is used for performing space-time decoding on the Nxk radio frequency signal streams demodulated by the demodulation module to obtain baseband signal streams.
6. The apparatus according to claim 4 or 5, wherein the modulation allocation module is specifically configured to:
dividing each radio frequency signal stream in the N radio frequency signal streams obtained by modulation into k paths of sub radio frequency signal streams with the same power; or,
dividing each radio frequency signal stream into k paths of sub radio frequency signal streams, wherein the power values of the sub radio frequency signal streams accord with a preset proportional relation; or,
and distributing each radio frequency signal stream into k paths of sub radio frequency signal streams with preset power values.
7. A network device, comprising the intelligent distribution wireless access device applied to the indoor distribution wireless local area network according to any one of claims 4 to 6.
8. An intelligent wireless access method applied to a room division wireless local area network is characterized by comprising the following steps:
carrying out space-time coding on a baseband signal stream to be transmitted to obtain N sub-baseband signal streams; wherein N is a natural number greater than or equal to 2;
modulating the N sub-baseband signal streams into N radio frequency signal streams, and respectively distributing each radio frequency signal stream into k paths of sub-radio frequency signal streams, wherein one path of sub-radio frequency signal stream of each radio frequency signal stream corresponds to a corresponding antenna in each building room; k is a natural number, the number of the buildings is k, and every N antennas are located in the same building room;
and sending the K paths of sub radio frequency signal streams obtained by distributing each radio frequency signal stream to corresponding antennas in each building.
9. The method of claim 8, further comprising:
receiving sub radio frequency signal streams from N antennas in each building room, demodulating the sub radio frequency signals received from the corresponding antennas in the N antennas in each building room into N x k radio frequency signal streams, and performing space-time decoding on the N x k radio frequency signal streams to obtain baseband signal streams.
10. The method according to claim 8 or 9, wherein the dividing each of the N radio frequency signal streams into k paths of sub-radio frequency signal streams comprises:
dividing each radio frequency signal stream in the N radio frequency signal streams obtained by modulation into k paths of sub radio frequency signal streams with the same power; or,
dividing each radio frequency signal stream into k paths of sub radio frequency signal streams, wherein the power values of the sub radio frequency signal streams accord with a preset proportional relation; or,
and distributing each radio frequency signal stream into k paths of sub radio frequency signal streams with preset power values.
11. An intelligent wireless access system applied to a room division wireless local area network, comprising: the access point AP and M antennas, wherein M is k multiplied by N, N is a natural number which is greater than or equal to 2, k is a natural number, the M antennas are respectively positioned in k building rooms, every N antennas are positioned in the same building room, and the AP and the antennas are connected through a feeder line;
the AP is configured to perform space-time coding on a baseband signal stream to be transmitted to obtain a first sub-baseband signal stream group and a second sub-baseband signal stream group, where the first sub-baseband signal stream group and the second sub-baseband signal stream group both include N sub-baseband signal streams, and corresponding sub-baseband signal streams in the first sub-baseband signal stream group and the second sub-baseband signal stream group are the same; modulating N sub-baseband signal streams in the first sub-baseband signal stream group into N first radio frequency signal streams, and respectively distributing each first radio frequency signal stream into k paths of first sub-radio frequency signal streams, wherein one path of first sub-radio frequency signal stream of each first radio frequency signal stream corresponds to a corresponding antenna in each building room; modulating N sub-baseband signal streams in the second sub-baseband signal stream group into N second radio frequency signal streams, and respectively distributing each second radio frequency signal stream into k paths of second sub-radio frequency signal streams, wherein one path of second sub-radio frequency signal stream of each second radio frequency signal stream corresponds to a corresponding antenna in each building room; merging and sending K paths of first sub radio frequency signal streams obtained by distributing each first radio frequency signal stream and K paths of second sub radio frequency signal streams obtained by distributing each second radio frequency signal stream to corresponding antennas in each building room;
the antenna is configured to send the received one path of the first sub radio frequency signal stream and the one path of the second sub radio frequency signal stream.
12. The system of claim 11, wherein the antenna is further configured to receive a first sub rf signal stream and a second sub rf signal stream from a station;
the AP is further configured to demodulate the first sub radio frequency signal streams received from the corresponding antennas of the N antennas in each building room into N × k first radio frequency signal streams, and demodulate the second sub radio frequency signal streams received from the corresponding antennas of the N antennas in each building room into N × k second radio frequency signal streams; and performing space-time decoding on the N x k demodulated first radio frequency signal streams to obtain first baseband signal streams, and performing space-time decoding on the N x k demodulated second radio frequency signal streams to obtain second baseband signal streams.
13. An intelligent distribution wireless access device applied to an indoor distribution wireless local area network, comprising:
the encoding module is configured to perform space-time coding on a baseband signal stream to be transmitted to obtain a first sub-baseband signal stream group and a second sub-baseband signal stream group, where the first sub-baseband signal stream group and the second sub-baseband signal stream group both include N sub-baseband signal streams, and corresponding sub-baseband signal streams in the first sub-baseband signal stream group and the second sub-baseband signal stream group are the same;
the first modulation distribution module is used for modulating N sub-baseband signal streams in the first sub-baseband signal stream group from the coding module into N first radio frequency signal streams and respectively distributing each first radio frequency signal stream into k paths of first sub-radio frequency signal streams, wherein one path of first sub-radio frequency signal stream of each first radio frequency signal stream corresponds to a corresponding antenna in each building room;
a second modulation distribution module, configured to modulate N sub-baseband signal streams in the second sub-baseband signal stream group from the encoding module into N second radio-frequency signal streams, and respectively distribute each second radio-frequency signal stream into k paths of second sub-radio-frequency signal streams, where one path of second sub-radio-frequency signal stream of each second radio-frequency signal stream corresponds to a corresponding antenna in each building room;
a transmitting module, configured to combine and transmit K paths of first sub radio frequency signal streams, which are obtained by the first modulation and allocation module by allocating each first radio frequency signal stream, and K paths of second sub radio frequency signal streams, which are obtained by the second modulation and allocation module by allocating each second radio frequency signal stream, to a corresponding antenna in each building indoor;
wherein N is a natural number greater than or equal to 2, k is a natural number, the number of the buildings is k, and each N antennas are located in the same building room.
14. The apparatus of claim 13, further comprising:
a receiving module for receiving a first sub radio frequency signal stream and a second sub radio frequency signal stream from N antennas in each building room;
a first demodulation module, configured to demodulate the first sub radio frequency signals received by the receiving module from corresponding antennas in the N antennas in each building room into N × k first radio frequency signal streams;
a second demodulation module, configured to demodulate the second sub radio frequency signals received by the receiving module from corresponding antennas in the N antennas in each building room into N × k second radio frequency signal streams;
a decoding module, configured to perform space-time decoding on the nxk first radio frequency signal streams demodulated by the first demodulation module to obtain first baseband signal streams, and perform space-time decoding on the nxk second radio frequency signal streams demodulated by the second demodulation module to obtain second baseband signal streams.
15. A network device, characterized in that it comprises the intelligent wireless access device according to claim 13 or 14, applied to indoor wireless local area networks.
16. An intelligent wireless access method applied to a room division wireless local area network is characterized by comprising the following steps:
performing space-time coding on a baseband signal stream to be transmitted to obtain a first sub-baseband signal stream group and a second sub-baseband signal stream group, wherein the first sub-baseband signal stream group and the second sub-baseband signal stream group both comprise N sub-baseband signal streams, and corresponding sub-baseband signal streams in the first sub-baseband signal stream group and the second sub-baseband signal stream group are the same;
modulating N sub-baseband signal streams in the first sub-baseband signal stream group into N first radio frequency signal streams, and respectively distributing each first radio frequency signal stream into k paths of first sub-radio frequency signal streams, wherein one path of first sub-radio frequency signal stream of each first radio frequency signal stream corresponds to a corresponding antenna in each building room;
modulating N sub-baseband signal streams in the second sub-baseband signal stream group into N second radio frequency signal streams, and respectively distributing each second radio frequency signal stream into k paths of second sub-radio frequency signal streams, wherein one path of second sub-radio frequency signal stream of each second radio frequency signal stream corresponds to a corresponding antenna in each building room;
merging and sending K paths of first sub radio frequency signal streams obtained by distributing each first radio frequency signal stream and K paths of second sub radio frequency signal streams obtained by distributing each second radio frequency signal stream to corresponding antennas in each building room;
wherein, N is a natural number greater than or equal to 2, k is a natural number, the number of the buildings is k, and every N antennas are located in the same building room.
17. The method of claim 16, further comprising:
demodulating first sub radio frequency signal streams received from corresponding ones of the N antennas in each building room into N × k first radio frequency signal streams, and demodulating second sub radio frequency signal streams received from corresponding ones of the N antennas in each building room into N × k second radio frequency signal streams;
and performing space-time decoding on the N x k demodulated first radio frequency signal streams to obtain first baseband signal streams, and performing space-time decoding on the N x k demodulated second radio frequency signal streams to obtain second baseband signal streams.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102186254A (en) * 2009-12-21 2011-09-14 英特尔公司 Method and apparatus for downlink multiple-user multiple input multiple output scheduling
CN102547771A (en) * 2010-12-13 2012-07-04 中国移动通信集团北京有限公司 Multichannel indoor distribution system and signal transmission method thereof
CN102883335A (en) * 2012-08-08 2013-01-16 福建星网锐捷网络有限公司 Smart distribution single-frequency/dual-frequency wireless access system, device and method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4587004B2 (en) * 2009-01-07 2010-11-24 岩崎通信機株式会社 Wireless communication method, wireless communication system, and wireless communication apparatus using multi-antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102186254A (en) * 2009-12-21 2011-09-14 英特尔公司 Method and apparatus for downlink multiple-user multiple input multiple output scheduling
CN102547771A (en) * 2010-12-13 2012-07-04 中国移动通信集团北京有限公司 Multichannel indoor distribution system and signal transmission method thereof
CN102883335A (en) * 2012-08-08 2013-01-16 福建星网锐捷网络有限公司 Smart distribution single-frequency/dual-frequency wireless access system, device and method

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