CN102883335B - Intelligence is divided single-frequency/double-frequency wireless connecting system, device and method - Google Patents
Intelligence is divided single-frequency/double-frequency wireless connecting system, device and method Download PDFInfo
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Abstract
The invention discloses a kind of chamber of being applied to and divide intelligence point single-frequency/double-frequency wireless connecting system of WLAN, device and method, the network equipment, in single-frequency wireless access technology scheme of the present invention, radiofrequency signal to be sent is assigned as the sub-radiofrequency signal of multichannel that way is identical with the quantity of antenna by AP, and by feeder line, sub-multichannel radiofrequency signal is sent to multiple antennas correspondingly, antenna sends the sub-radiofrequency signal receiving, can realize in AP inside the power division of radiofrequency signal, can overcome existing putting a little less than dress WLAN and chamber divide the signal strength signal intensity that WLAN exists, signal covers problem inhomogeneous and that signal is easily disturbed, and divide WLAN deployment scheme with respect to chamber, can reduce the lower deployment cost of WLAN, reduce difficulty of construction.
Description
Technical Field
The invention relates to the field of wireless local area networks, in particular to an intelligent single-frequency/double-frequency wireless access system, device and method applied to a room-based wireless local area network and network equipment.
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 Cable (Cable), and a wlan user accesses the wlan through one or more Access Points (APs).
Currently, in-house wireless network signal coverage of the WLAN generally adopts a deployment scheme of installation and a deployment scheme of indoor division.
In the arrangement and deployment scheme, a large number of APs and antennas are intensively installed in a corridor of a building, and the signals transmitted by the antennas of the APs penetrate through walls to enter rooms to realize coverage. However, this method has the following disadvantages:
firstly, the self interference among the APs is serious, and the signal receiving and transmitting rate is low; because a plurality of APs are intensively deployed in a WLAN, co-channel interference must exist among the APs to achieve effective coverage of signals, which leads to low and unstable wireless network speed and continuous jump of a wireless terminal when the wireless terminal performs wireless network connection;
second, the signal cannot effectively reach the inside of the room; because the indoor room adopts the solid brick wall, the blocking to the signal is very serious, the more luxurious the decoration is, the more serious the blocking is, the signal in most rooms is very low, even the signal blind spot appears;
thirdly, in order to increase the signal strength, a power amplifier is illegally used, namely a high-power amplifier is additionally arranged at the AP amplification position, so that the effective radiation seriously exceeds the national standard and is harmful to a human body.
The indoor distribution deployment scheme can solve the problems that co-channel interference exists among APs in the distribution type deployment, and signals cannot effectively reach the inside of a room.
In the indoor distribution deployment scheme, the AP is installed between weak electricity of a building or a corridor ceiling, 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 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. The following disadvantages exist in this way:
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.
It can be seen that in the current deployment schemes of the radio frequency identification WLAN and the indoor distribution WLAN, the problems of weak signal strength, uneven signal coverage and easy signal interference exist, and the indoor distribution WLAN deployment schemes also have the problems of high WLAN deployment cost and high construction difficulty.
Disclosure of Invention
In view of this, embodiments of the present invention provide an intelligent single-frequency/dual-frequency wireless access system, an intelligent single-frequency/dual-frequency wireless access device, and a network device, which are applied to a room-division WLAN, and are used to solve the problems of weak signal strength, uneven signal coverage, and easy signal interference of the existing WLAN, and the problems of high deployment cost and high construction difficulty of the room-division WLAN.
The technical scheme of the embodiment of the invention is as follows:
a kind of intelligent division single frequency wireless access system used in indoor division WLAN, including: the access point AP and the at least one antenna are connected through a feeder line; the AP is configured to allocate a radio frequency signal to be transmitted to at least one sub-radio frequency signal having the same number of paths as the number of antennas, and transmit the at least one sub-radio frequency signal to the at least one antenna in a one-to-one correspondence manner; the antenna is used for transmitting the sub radio frequency signal.
An intelligent division single frequency wireless access device applied to indoor division WLAN comprises: the distribution module is used for distributing the radio frequency signals to be transmitted into at least one path of sub radio frequency signals with the same number of paths and at least one antenna connected with the device, and respectively transmitting the at least one path of sub radio frequency signals to the at least one antenna in a one-to-one correspondence manner.
A network device comprises the intelligent division single frequency wireless access device applied to the indoor division WLAN.
A intelligent division single frequency wireless access method applied to indoor division WLAN comprises the following steps: the access point AP distributes the radio frequency signal to be transmitted into at least one path of sub radio frequency signals with the same path number as that of at least one antenna connected with the access point AP; and respectively sending the at least one path of sub radio frequency signals to the at least one antenna in a one-to-one correspondence manner.
A intelligent division dual-frequency wireless access system applied to indoor division WLAN comprises: the access point AP and the at least one antenna are connected through a feeder line; the AP is configured to allocate a first radio frequency signal and a second radio frequency signal to be transmitted to at least one first sub radio frequency signal and at least one second sub radio frequency signal, which have the same number of paths as the antennas, respectively, and combine and transmit one path of the first sub radio frequency signal and one path of the second sub radio frequency signal to one antenna in a one-to-one correspondence manner; the antenna is used for transmitting the first sub radio frequency signal and the second sub radio frequency signal.
An intelligent division dual-frequency wireless access device applied to indoor division WLAN comprises: the distribution module is used for respectively distributing the first radio frequency signals and the second radio frequency signals to be sent into at least one path of first sub radio frequency signals and at least one path of second sub radio frequency signals, wherein the number of the paths of the first sub radio frequency signals and the number of the paths of second sub radio frequency signals are the same as the number of the antennas; and the merging and sending module is used for merging and sending one path of the first sub radio frequency signals and one path of the second sub radio frequency signals to one antenna in a one-to-one correspondence manner.
A network device comprises the above-mentioned intelligent division dual-frequency wireless access device applied to the indoor division WLAN.
A intelligent division dual-frequency wireless access method applied to indoor division WLAN comprises the following steps: the access point AP distributes a first radio frequency signal and a second radio frequency signal to be transmitted into at least one path of first sub radio frequency signal and at least one path of second sub radio frequency signal, wherein the number of the paths of the first radio frequency signal and the number of the second radio frequency signal are the same as the number of at least one antenna connected with the access point AP; and combining and sending one path of the first sub radio frequency signals and one path of the second sub radio frequency signals to one antenna in a one-to-one correspondence manner.
According to the intelligent distribution single-frequency wireless access system provided by the embodiment of the invention, the AP distributes the radio frequency signals to be sent into the multi-path sub radio frequency signals with the same number of paths as that of the antennas, and sends the multi-path sub radio frequency signals to the antennas in a one-to-one correspondence manner through the feeder lines, and the antennas send the received sub radio frequency signals out, so that power distribution can be realized inside the AP, and therefore, the problems of weak signal strength, uneven signal coverage and easy signal interference of the WLAN in the prior art 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 an intelligent distributed single frequency wireless access system applied to a indoor distributed WLAN according to an embodiment of the present invention;
fig. 2 is a flowchart of the operation of the smart split single-frequency wireless access method applied to the indoor-split WLAN according to the embodiment of the present invention;
fig. 3 is a block diagram of an intelligent distributed single frequency wireless access device applied to a indoor distributed WLAN according to an embodiment of the present invention;
FIG. 4 is a block diagram of a preferred configuration of the apparatus shown in FIG. 3;
fig. 5 is a block diagram of a specific implementation of the smart division single-frequency wireless access system applied to the indoor division WLAN according to the embodiment of the present invention;
fig. 6 is a block diagram of an intelligent split dual-band wireless access system applied to a indoor-split WLAN according to an embodiment of the present invention;
fig. 7 is a flowchart of the operation of the intelligent split dual-band wireless access method applied to the indoor-split WLAN according to the embodiment of the present invention;
fig. 8 is a block diagram of an intelligent split dual-band wireless access device applied to a indoor-split WLAN according to an embodiment of the present invention;
FIG. 9 is a block diagram of a preferred construction of the apparatus shown in FIG. 8;
fig. 10 is a block diagram of a specific implementation of the intelligent dual-band wireless access system applied to the indoor 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.
The embodiment of the invention provides an intelligent single-frequency/double-frequency wireless access scheme applied to indoor WLAN (wireless local area network), aiming at the problems of weak signal strength, uneven signal coverage and easy signal interference in the existing radio-installed WLAN and indoor WLAN, and the problems of high deployment cost and high construction difficulty of the indoor WLAN.
In the embodiment of the present invention, "intelligent distribution" means intelligent distribution of signals, "intelligent distribution single-frequency wireless access system applied to indoor distribution WLAN" means single-frequency wireless access system applied to indoor distribution WLAN and intelligent distribution dual-frequency wireless access system applied to indoor distribution WLAN "means dual-frequency wireless access system applied to indoor distribution WLAN and intelligent distribution of signals.
In the single-frequency wireless access scheme provided by the embodiment of the invention, power distribution is realized inside the AP, that is, the AP distributes the radio frequency signals to be transmitted into multiple paths of sub radio frequency signals with the same number of paths as that of the antennas, and the multiple paths of sub radio frequency signals are transmitted to the multiple antennas in one-to-one correspondence through the feeder lines, the antennas transmit the received sub radio frequency signals, the antennas can be deployed in the indoor places of the building where the wireless signals are needed according to the needs, and a power distribution circuit outside the AP is omitted compared with the existing indoor WLAN, so that the problems of weak signal strength, uneven signal coverage and easy signal interference existing in the prior art for placing and installing the WLAN and the indoor WLAN can be solved, and the AP and the antennas are directly connected through the feeder lines due to the omission of a power distribution circuit outside the AP, so that the deployment cost of the WLAN can be reduced, and the construction difficulty can be.
Example one
Fig. 1 shows a block diagram of an intelligent split single frequency wireless access system applied to a indoor WLAN according to an embodiment of the present invention, and as shown in fig. 1, the system includes an AP11 and at least one antenna 12, the antenna is located in a building, and the AP11 and the antenna 12 are connected by a feeder 13.
The AP11 is configured to allocate a radio frequency signal to be sent to at least one sub-radio frequency signal having the same number of paths as the number of antennas, and send the at least one sub-radio frequency signal to the at least one antenna in a one-to-one correspondence; specifically, the AP11 first filters the radio frequency signal to obtain a radio frequency signal to be transmitted in a predetermined operating frequency band, where the predetermined operating frequency band includes: 2.4GHz to 2.4835GHz, or 5.8GHz to 5.85 GHz; secondly, the AP11 may distribute the total power of the radio frequency signals to be transmitted in multiple ways to obtain at least one path of sub radio frequency signals with the same number of paths as that of the at least one antenna, specifically, the AP11 may distribute the total power of the radio frequency signals to be transmitted evenly to obtain at least one path of sub radio frequency signals with the same power, or distribute the total power of the radio frequency signals to be transmitted according to a predetermined proportional relationship to obtain at least one path of sub radio frequency signals with a power value conforming to the proportional relationship, or divide the radio frequency signals to be transmitted into at least one path of sub radio frequency signals with a predetermined power value;
and an antenna 12 for transmitting the sub radio frequency signal.
Fig. 2 shows an operation flow chart of the smart split single-frequency wireless access method applied to the indoor-split WLAN according to an embodiment of the present invention, that is, fig. 2 shows an operation flow of the AP11 shown in fig. 1, where the operation flow includes:
step 21, the AP11 allocates the radio frequency signal to be transmitted to at least one sub-radio frequency signal with the same number of paths as that of the at least one antenna connected to the sub-radio frequency signal; preferably, the AP11 first filters a radio frequency signal to obtain the radio frequency signal to be sent in a predetermined operating frequency band, where the predetermined operating frequency band includes: 2.4GHz to 2.4835GHz, or 5.8GHz to 5.85 GHz; secondly, the AP11 may distribute the total power of the radio frequency signals to be transmitted in multiple ways to obtain at least one path of sub radio frequency signals, specifically, may distribute the total power of the radio frequency signals to be transmitted evenly to obtain at least one path of sub radio frequency signals with the same power, may also distribute the total power of the radio frequency signals to be transmitted according to a predetermined proportional relationship to obtain at least one path of sub radio frequency signals with power values conforming to the proportional relationship, and may also divide the radio frequency signals to be transmitted into at least one path of sub radio frequency signals with a predetermined power value;
step 22, the AP11 sends the at least one path of sub rf signals to the at least one antenna in a one-to-one correspondence.
It can be seen from the system shown in fig. 1 and the operating principle of AP11 that the power of the rf signal to be transmitted is distributed inside AP11, the distributed sub rf signal is transmitted to the antenna through the feeder, the antenna can be deployed in a place where a wireless signal is needed indoors in a building as needed, the signal strength is not affected by the spatial distance between the location of the AP and the location of the antenna, uniform signal coverage can be achieved in the space of the antenna, and signal interference between APs can be reduced, so that the problems of weak signal strength, non-uniform signal coverage and easy signal interference in the prior art that the WLAN is installed and the WLAN is installed indoors can be solved, and the AP and the antenna are directly connected through the feeder due to the omission of the power distribution circuit outside the AP, so that the deployment cost of the WLAN can be reduced, and the construction difficulty can be reduced.
Preferably, the AP11 further filters the radio frequency signal to obtain a radio frequency signal to be transmitted, and can isolate a frequency band outside a predetermined operating frequency band, so that the anti-interference performance of the AP11 can be further improved.
Fig. 3 shows a block diagram of an intelligent split single frequency wireless access device applied to a indoor WLAN according to an embodiment of the present invention, that is, the AP11 shown in fig. 1 includes the device shown in fig. 3, where the device includes:
the allocating module 31 is configured to allocate a radio frequency signal to be transmitted to at least one sub-radio frequency signal having the same number of paths as that of at least one antenna connected to the apparatus, and transmit the at least one sub-radio frequency signal to the at least one antenna in a one-to-one correspondence manner.
Preferably, fig. 4 shows a block diagram of a preferred structure of the apparatus shown in fig. 3, and on the basis of the structure shown in fig. 3, the apparatus shown in fig. 4 further includes a filtering module 32, where the filtering module 32 is configured to filter a radio frequency signal to obtain a radio frequency signal to be transmitted within a predetermined operating frequency band, and the predetermined operating frequency band includes: 2.4GHz to 2.4835GHz, or 5.8GHz to 5.85 GHz. Then the process of the first step is carried out,
the allocating module 31 is specifically configured to perform average allocation on the total power of the radio frequency signals to be sent, which is obtained by the filtering module 32, to obtain at least one path of sub radio frequency signals with the same power; or, the total power of the radio frequency signals to be transmitted is distributed according to a predetermined proportional relationship, so as to obtain at least one path of sub radio frequency signals, the power values of which conform to the proportional relationship, and the radio frequency signals to be transmitted can be divided into at least one path of sub radio frequency signals with a predetermined power value.
The working principle of the device shown in fig. 3 and 4 is shown in fig. 2, and will not be described again.
The device shown in fig. 3 or fig. 4 can also overcome the problems of weak signal strength, uneven signal coverage and easy signal interference existing in the prior art when the WLAN and the indoor WLAN are installed, and can reduce the deployment cost of the WLAN and reduce the construction difficulty.
Based on the same inventive concept, the embodiment of the present invention further provides a network device, which includes the apparatus shown in fig. 3 or fig. 4, and in a specific application, the network device may be an AP.
The following describes a specific implementation of the embodiment.
Fig. 5 shows a block diagram of a specific implementation of the smart split single-frequency wireless access system applied to a cellular WLAN according to an embodiment of the present invention, as shown in fig. 5, the system includes an AP51 and n antennas 52, where the antennas 52 are respectively located in n rooms of a building in a one-to-one correspondence, and the AP51 and the antennas 52 are connected by a feeder 53, where n is a natural number. The AP51 includes a signal processing unit 511 and a filter distribution unit 512, where the filter distribution unit 512 corresponds to the radio access apparatus shown in fig. 4, that is, the filter distribution unit 512 corresponds to the filter module 32 and the distribution module 31 in fig. 4.
The signal processing unit 511 is used for converting the digital signal from the wireless bridge into a radio frequency signal;
the filtering and allocating unit 512 filters and allocates power to the radio frequency signals from the signal processing unit 511, that is, firstly filters the radio frequency signals to obtain radio frequency signals within a narrow-bandwidth working frequency band, where the working frequency band conforms to the 802.11 standard, and the working frequency band is specifically 2.4GHz to 2.4835GHz, or 5.8GHz to 5.85GHz, secondly allocates power to the filtered radio frequency signals, and allocates n paths of sub radio frequency signals, whose number is the same as the number n of the antennas 52, to the radio frequency signals according to the principle of evenly allocating the total power of the radio frequency signals, and sends the n paths of sub radio frequency signals to the n antennas 52 in a one-to-one correspondence manner.
The antenna 52 transmits radio frequency signals from the AP 51.
Through the system AP51 shown in fig. 5, multiple sub-rf signals with approximately the same success rate can be distributed more uniformly to the rf signals, and the sub-rf signals are sent to the antennas 52 through the feeders, so that the sub-rf signals received by the antennas 52 have stable power and equivalent signal power strength, thereby achieving uniform coverage of the signals, and other signals outside the operating frequency band can be shielded through filtering, thereby improving the anti-interference performance of the rf signals. Moreover, the system shown in fig. 5 is simple in construction and low in deployment cost.
Specifically, the filter distribution unit 512 may be an on-board filter distribution circuit, which meets the requirements of AP miniaturization and integration. The on-board filter distribution circuit can be implemented in a variety of ways, such as: firstly, the filter distribution circuit can be realized by designing on an integrated circuit board, and secondly, the filter distribution circuit can be realized by the combination of the existing filter chip and the power distribution chip. The first method needs to design a special integrated circuit, has high circuit integration level, small equipment specification and obvious signal processing capability, is a relatively ideal implementation mode, and can be realized by adopting a filter circuit and a micro-strip routing (PCB routing) circuit; the second method requires debugging of the matching between chips, and the signal processing capability depends on the processing capability of the chip.
In summary, according to the technical scheme of the first embodiment, power distribution is implemented inside the AP, that is, the AP distributes the radio frequency signals to be transmitted into multiple sub radio frequency signals with the same number of paths as the number of antennas, and sends the multiple sub radio frequency signals to the multiple antennas in one-to-one correspondence via the feeder, and the antennas send the received sub radio frequency signals, and the antennas can be deployed in the indoor places of the building where the wireless signals are needed according to the needs.
Example two
Based on the same inventive concept, the embodiment of the invention also provides an intelligent division dual-frequency wireless access system applied to the indoor division wireless local area network.
Fig. 6 shows a smart dual-band wireless access system applied to a cellular wireless lan, comprising: AP61 and at least one antenna 62, antenna 62 being located in the building room, AP61 and antenna 62 being connected by feeder 63;
the AP61 is configured to allocate a first radio frequency signal to be transmitted and a second radio frequency signal to be transmitted to at least one first sub radio frequency signal and at least one second sub radio frequency signal, which have the same number as that of the antennas 62, and combine and transmit the first sub radio frequency signal and the second sub radio frequency signal to one antenna 62 in a one-to-one correspondence;
an antenna 62 for transmitting the first sub radio frequency signal and the second sub radio frequency signal; preferably, the operating bandwidth of the antenna 63 is greater than or equal to the sum of the bandwidths of the first and second sub radio frequency signals.
Fig. 7 shows an operation flow chart of the intelligent split dual-band wireless access method applied to the indoor-split WLAN according to the embodiment of the present invention, that is, fig. 7 shows an operation flow of the AP61 shown in fig. 6, where the operation flow includes:
step 71, the AP61 allocates the first radio frequency signal to be transmitted and the second radio frequency signal to be transmitted to at least one first sub radio frequency signal and at least one second sub radio frequency signal, which have the same number of paths as the number of the at least one connected antenna, respectively;
preferably, the AP61 first filters the first radio frequency signal to obtain a first radio frequency signal to be transmitted in a predetermined first operating frequency band, and filters the second radio frequency signal to obtain a second radio frequency signal to be transmitted in a predetermined second operating frequency band, where the predetermined first operating frequency band includes: 2.4GHz to 2.4835GHz, the predetermined second operating band comprising: 5.15GHz to 5.825 GHz;
secondly, the AP61 may distribute the first radio frequency signal and the second radio frequency signal to be transmitted in multiple ways, specifically, may evenly distribute the total power of the first radio frequency signal to be transmitted to obtain at least one path of first sub radio frequency signal with the same power, and evenly distribute the total power of the second radio frequency signal to be transmitted to obtain at least one path of second sub radio frequency signal with the same power; or,
distributing the total power of a first radio frequency signal to be transmitted according to a preset first proportional relation to obtain at least one path of first sub radio frequency signals of which the power values conform to the first proportional relation, and distributing the total power of a second radio frequency signal to be transmitted according to a preset second proportional relation to obtain at least one path of second sub radio frequency signals of which the power values conform to the second proportional relation; or,
dividing a first radio frequency signal to be transmitted into at least one path of first sub radio frequency signal with a preset power value, and dividing a second radio frequency signal to be transmitted into at least one path of second sub radio frequency signal with a preset power value;
step 72, the AP61 combines and sends one path of the first sub radio frequency signal and one path of the second sub radio frequency signal to one antenna in a one-to-one correspondence.
As can be seen from the operating principle of the system shown in fig. 6 and the AP61, based on the single-frequency wireless access system shown in fig. 1, the AP61 in the system shown in fig. 6 can also implement power distribution of dual-frequency signals to be transmitted inside the device, and combine the dual-frequency signals one to one and output the combined dual-frequency signals to the antenna 62 through the feeder line, and the antenna 62 outputs the dual-frequency signals, so that signal coverage of the dual-frequency signals can be provided indoors in a building at the same time, and the signal strength of the dual-frequency signals is not attenuated by the obstruction of the building walls, and the signal coverage in the space where the antenna is located is uniform, the signal interference between APs is small, and the interference by other communication systems is small; however, in the prior art, to realize the dual-frequency signal coverage of 2.4GHz and 5.8GHz of the WLAN, two sets of accommodating or indoor-parting wireless access systems must be deployed to respectively realize the wireless access of 2.4GHz and the wireless access of 5.8GHz, so that the problems of high deployment cost and high construction difficulty of the dual-frequency WLAN are caused, and the 5.8GHz signal space is greatly attenuated, and the blocking attenuation effect of the building wall on the signal is remarkable, so that the strength of the wireless access signal of 5.8GHz is very weak; therefore, the embodiment of the invention can effectively realize the wireless access of the dual-frequency signals, save the deployment cost of the dual-frequency WLAN, reduce the construction difficulty, and has good signal intensity and less signal attenuation of the 5.8GHz signals.
Based on the same inventive concept, the embodiment of the invention also provides an intelligent division dual-frequency wireless access device applied to the indoor division WLAN.
Fig. 8 is a block diagram illustrating a structure of an intelligent split dual-band wireless access apparatus applied to a indoor WLAN according to an embodiment of the present invention, where, as shown in fig. 8, the apparatus includes:
the allocating module 81 is configured to allocate a first radio frequency signal to be sent and a second radio frequency signal to be sent to at least one first sub radio frequency signal and at least one second sub radio frequency signal, where the number of the first radio frequency signals and the number of the second radio frequency signals are the same as the number of antennas;
specifically, the allocating module 81 performs average allocation on the total power of the first radio frequency signals to be transmitted to obtain at least one path of first sub radio frequency signals with the same power, and performs average allocation on the total power of the second radio frequency signals to be transmitted to obtain at least one path of second sub radio frequency signals with the same power; or, the total power of the first radio frequency signal to be transmitted is distributed according to a predetermined first proportional relationship to obtain at least one path of first sub radio frequency signals of which the power values conform to the first proportional relationship, and the total power of the second radio frequency signal to be transmitted is distributed according to a predetermined second proportional relationship to obtain at least one path of second sub radio frequency signals of which the power values conform to the second proportional relationship; or dividing a first radio frequency signal to be transmitted into at least one path of first sub radio frequency signal with a preset power value, and dividing a second radio frequency signal to be transmitted into at least one path of second sub radio frequency signal with a preset power value;
a combining and sending module 82, connected to the distributing module 81, for combining and sending one path of the first sub radio frequency signal and one path of the second sub radio frequency signal to one antenna in a one-to-one correspondence; preferably, the operating bandwidth of the combining and transmitting module 82 is greater than or equal to the sum of the bandwidths of the first sub-rf signal and the second sub-rf signal.
Preferably, fig. 9 shows a block diagram of a preferred structure of the apparatus shown in fig. 8, on the basis of the apparatus shown in fig. 8, the apparatus shown in fig. 9 further includes a filtering module 83, where the filtering module 83 is configured to filter the first radio frequency signal to obtain a first radio frequency signal to be transmitted in a predetermined first operating frequency band, and filter the second radio frequency signal to obtain a second radio frequency signal to be transmitted in a predetermined second operating frequency band, where the predetermined first operating frequency band includes: 2.4GHz to 2.4835GHz, the predetermined second operating band comprising: 5.15GHz to 5.825 GHz.
The device shown in fig. 8 or 9 can also effectively realize wireless access of dual-frequency signals, and the dual-frequency signals have good signal strength, uniform signal coverage and small signal interference.
Based on the same inventive concept, the embodiment of the present invention further provides a network device, which includes the apparatus shown in fig. 8 or fig. 9, and preferably, the network device may be an AP.
The following describes a case of concrete implementation of the second embodiment.
Fig. 10 shows a block diagram of a specific implementation of an intelligent-division dual-band wireless access system applied to a indoor-division WLAN according to an embodiment of the present invention, as shown in fig. 10, the system includes an AP101 and n antennas 102, where the antennas 102 are respectively located in m rooms of a building in a one-to-one correspondence, and the AP101 and the antennas 102 are connected by a feeder 103, where m is a natural number. The AP101 includes a first signal processing unit 1011, a first filtering and distributing unit 1012, a second signal processing unit 1013, a second filtering and distributing unit 1014, and a combining and transmitting unit 1015, where the combining and transmitting unit 1015 includes m combining and transmitting modules 10151...1015mFilter elementThe configuration unit 1012 corresponds to the dual-frequency radio access apparatus shown in fig. 9, that is, the filtering distribution unit 1012 corresponds to the filtering module 82 and the distribution module 81 of fig. 9.
The first signal processing unit 1011 is configured to convert the first digital signal from the wireless bridge into a first radio frequency signal;
the second signal processing unit 1013 is configured to convert the second digital signal from the wireless bridge into a second radio frequency signal;
the first filtering and allocating unit 1012 performs filtering and power allocation on the first radio frequency signal from the first signal processing unit 1011, that is, first filters the first radio frequency signal to obtain a radio frequency signal within a narrow-bandwidth working frequency band, where the working frequency band meets 802.11 standards, and the working frequency band is specifically 2.4GHz to 2.4835GHz, and then performs power allocation on the filtered first radio frequency signal, for example, according to a principle of performing average allocation on the total power of the radio frequency signal, allocates the radio frequency signal to obtain m paths of first sub radio frequency signals having a number of paths equal to the number m of the antennas 102, and sends the m paths of sub radio frequency signals one-to-one to the m combined sending modules 10151...1015m；
The second filtering and allocating unit 1014 performs filtering and power allocation on the second radio frequency signal from the second signal processing unit 1013, that is, first filters the second radio frequency signal to obtain a radio frequency signal within a narrow-bandwidth working frequency band, where the working frequency band meets 802.11 standards, and the working frequency band is specifically 5.15GHz to 5.825GHz, and then performs power allocation on the filtered second radio frequency signal, for example, according to a principle of performing average allocation on the total power of the radio frequency signal, allocates the radio frequency signal to obtain m paths of second sub-radio frequency signals, where the number of the paths of second sub-radio frequency signals is the same as the number m of the antennas 102, and sends the m paths of sub-radio frequency signals to the m 1015 sub-radio frequency signals one-to-one correspondence1...1015m；
Combining sending module 10151...1015mCombining and outputting one path of first sub-radio frequency signal and one path of second sub-radio frequency signal to the antenna 102, and combining and sending module 10151...1015mThe working bandwidth of the antenna is 2 GHz-6 GHz;
the antenna 102 sends a first sub radio frequency signal and a second sub radio frequency signal from the AP101, and the working bandwidth of the antenna 102 is 2 GHz-6 GHz.
Through the system shown in fig. 10, the AP101 can distribute the first radio frequency signal and the second radio frequency signal to multiple paths of first sub radio frequency signals and multiple paths of second sub radio frequency signals with approximately the same success rate respectively, and combine and output one path of first sub radio frequency signal and one path of second sub radio frequency signal to one antenna in a one-to-one correspondence manner, so that the first sub radio frequency signal and one path of second sub radio frequency signal received by each antenna are stable in power and equivalent in signal power strength, thereby achieving uniform coverage of the dual frequency signals, shielding other signals outside the working frequency band through filtering, and improving the anti-interference performance of the dual frequency signals.
Specifically, the first filtering distribution unit 1012 and the second filtering distribution unit 1014 may be configured as the filtering distribution unit 512 in fig. 5, and are not described herein again.
The combining and transmitting unit 1015 may have various implementations, for example, first, it may be matched with the first filtering and distributing unit 1012 and the second filtering and distributing unit 1014, and design a combining and transmitting circuit on the integrated circuit board, and second, implement the combining and transmitting function through the integrated combining chip. When the first method is adopted, the lengths, bandwidths and wiring modes of the PCB wiring which enable the input impedance and the output impedance of two frequency bands to be matched and enable signals between the two frequency bands to be free of interference are determined in advance through a simulation technology, so that a reliable combined transmitting circuit is obtained; lumped elements (e.g., resistors, inductors, and capacitors) may also be used to design the combined transmit circuit. The second method requires debugging of the matching between chips, and the signal processing capability depends on the processing capability of the chip.
In summary, according to the technical scheme of the second embodiment, power distribution of dual-frequency signals to be transmitted can be achieved inside the AP device, the dual-frequency signals are combined in a one-to-one correspondence manner and then output to the antenna through the feeder, the antenna outputs the dual-frequency signals, signal coverage of the dual-frequency signals can be provided indoors in a building at the same time, signal strength of the dual-frequency signals cannot be attenuated by blocking of a building wall, signal coverage is uniform in a space where the antenna is located, signal interference among APs is small, interference of other communication systems is small, wireless access of the dual-frequency signals can be effectively achieved, deployment cost of the dual-frequency WLAN is saved, construction difficulty is reduced, signal strength of 5.8GHz signals is good, and signal attenuation is reduced.
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 (20)
1. A single frequency wireless access system for use in a cellular wlan, comprising: the access point AP and the at least one antenna are connected through a feeder line;
the AP is configured to allocate a radio frequency signal to be transmitted to at least one sub-radio frequency signal having the same number of paths as the number of antennas, and transmit the at least one sub-radio frequency signal to the at least one antenna in a one-to-one correspondence manner;
the antenna is used for transmitting the sub radio frequency signal.
2. The system of claim 1, wherein the AP is specifically configured to:
carrying out average distribution on the total power of the radio frequency signals to be sent to obtain at least one path of sub radio frequency signals with the same power; or,
distributing the total power of the radio frequency signals to be transmitted according to a preset proportional relation to obtain at least one path of sub radio frequency signals of which the power values conform to the proportional relation; or,
and dividing the radio frequency signal to be transmitted into the at least one path of sub radio frequency signals with a preset power value.
3. The system of claim 1 or 2, wherein the AP is further configured to:
filtering a radio frequency signal to obtain the radio frequency signal to be sent in a preset working frequency band, wherein the preset working frequency band comprises: 2.4GHz to 2.4835GHz, or 5.8GHz to 5.85 GHz.
4. A single frequency wireless access apparatus for use in a cellular wireless lan, comprising:
the distribution module is used for distributing the radio frequency signals to be transmitted into at least one path of sub radio frequency signals with the same number of paths as that of at least one antenna connected with the device;
and the sending module is used for respectively sending the at least one path of sub radio frequency signals to the at least one antenna in a one-to-one correspondence manner.
5. The apparatus according to claim 4, wherein the allocation module is specifically configured to:
carrying out average distribution on the total power of the radio frequency signals to be sent to obtain at least one path of sub radio frequency signals with the same power; or,
distributing the total power of the radio frequency signals to be transmitted according to a preset proportional relation to obtain at least one path of sub radio frequency signals of which the power values conform to the proportional relation; or,
and dividing the radio frequency signal to be transmitted into the at least one path of sub radio frequency signals with a preset power value.
6. The apparatus of claim 4 or 5, further comprising:
a filtering module, configured to filter a radio frequency signal to obtain the radio frequency signal to be sent in a predetermined operating frequency band, where the predetermined operating frequency band includes: 2.4GHz to 2.4835GHz, or 5.8GHz to 5.85 GHz.
7. Network equipment, characterized in that it comprises a single frequency wireless access device for indoor distribution wireless local area networks according to any of claims 4 to 6.
8. A single frequency wireless access method applied to a room division wireless local area network is characterized by comprising the following steps:
the access point AP distributes the radio frequency signal to be transmitted into at least one path of sub radio frequency signals with the same path number as that of at least one antenna connected with the access point AP;
and respectively sending the at least one path of sub radio frequency signals to the at least one antenna in a one-to-one correspondence manner.
9. The method according to claim 8, wherein the AP allocates the rf signal to be transmitted to at least one sub-rf signal having the same number of channels as that of the at least one connected antenna, and specifically includes:
carrying out average distribution on the total power of the radio frequency signals to be sent to obtain at least one path of sub radio frequency signals with the same power; or,
distributing the total power of the radio frequency signals to be transmitted according to a preset proportional relation to obtain at least one path of sub radio frequency signals of which the power values conform to the proportional relation; or,
and dividing the radio frequency signal to be transmitted into the at least one path of sub radio frequency signals with a preset power value.
10. The method according to claim 8 or 9, characterized in that the method further comprises:
the AP filters a radio frequency signal to obtain the radio frequency signal to be transmitted in a predetermined operating frequency band, where the predetermined operating frequency band includes: 2.4GHz to 2.4835GHz, or 5.8GHz to 5.85 GHz.
11. A dual-band wireless access system for use in a cellular wireless local area network, comprising: the access point AP and the at least one antenna are connected through a feeder line;
the AP is configured to allocate a first radio frequency signal to be transmitted and a second radio frequency signal to be transmitted to at least one first sub radio frequency signal and at least one second sub radio frequency signal, which have the same number of paths as the antennas, respectively, and combine and transmit the first sub radio frequency signal and the second sub radio frequency signal to one antenna in a one-to-one correspondence manner;
the antenna is used for transmitting the first sub radio frequency signal and the second sub radio frequency signal.
12. The system of claim 11, wherein the AP is specifically configured to:
carrying out average distribution on the total power of the first radio-frequency signals to be sent to obtain at least one path of first sub radio-frequency signals with the same power, and carrying out average distribution on the total power of the second radio-frequency signals to be sent to obtain at least one path of second sub radio-frequency signals with the same power; or,
distributing the total power of the first radio-frequency signal to be sent according to a preset first proportional relation to obtain at least one path of first sub radio-frequency signals of which the power values conform to the first proportional relation, and distributing the total power of the second radio-frequency signal to be sent according to a preset second proportional relation to obtain at least one path of second sub radio-frequency signals of which the power values conform to the second proportional relation; or,
dividing the first radio frequency signal to be transmitted into the at least one path of first sub radio frequency signal with a preset power value, and dividing the second radio frequency signal to be transmitted into the at least one path of second sub radio frequency signal with a preset power value.
13. The system of claim 11 or 12, wherein the AP is further configured to:
filtering a first radio frequency signal to obtain the first radio frequency signal to be transmitted in a predetermined first working frequency band, and filtering a second radio frequency signal to obtain the second radio frequency signal to be transmitted in a predetermined second working frequency band, wherein the predetermined first working frequency band comprises: 2.4GHz to 2.4835GHz, the predetermined second operating band comprising: 5.15GHz to 5.825 GHz.
14. A dual-band wireless access device applied to a cellular Wireless Local Area Network (WLAN), comprising:
the distribution module is used for respectively distributing the first radio-frequency signals to be sent and the second radio-frequency signals to be sent into at least one path of first sub radio-frequency signals and at least one path of second sub radio-frequency signals, wherein the number of the paths of the first sub radio-frequency signals is equal to the number of the antennas;
and the merging and sending module is used for merging and sending one path of the first sub radio frequency signals and one path of the second sub radio frequency signals to one antenna in a one-to-one correspondence manner.
15. The apparatus according to claim 14, wherein the allocation module is specifically configured to:
carrying out average distribution on the total power of the first radio-frequency signals to be sent to obtain at least one path of first sub radio-frequency signals with the same power, and carrying out average distribution on the total power of the second radio-frequency signals to be sent to obtain at least one path of second sub radio-frequency signals with the same power; or,
distributing the total power of the first radio-frequency signal to be sent according to a preset first proportional relation to obtain at least one path of first sub radio-frequency signals of which the power values conform to the first proportional relation, and distributing the total power of the second radio-frequency signal to be sent according to a preset second proportional relation to obtain at least one path of second sub radio-frequency signals of which the power values conform to the second proportional relation; or,
dividing the first radio frequency signal to be transmitted into the at least one path of first sub radio frequency signal with a preset power value, and dividing the second radio frequency signal to be transmitted into the at least one path of second sub radio frequency signal with a preset power value.
16. The apparatus of claim 14 or 15, further comprising:
a filtering module, configured to filter a first radio frequency signal to obtain the first radio frequency signal to be sent in a predetermined first operating frequency band, and filter a second radio frequency signal to obtain the second radio frequency signal to be sent in a predetermined second operating frequency band, where the predetermined first operating frequency band includes: 2.4GHz to 2.4835GHz, the predetermined second operating band comprising: 5.15GHz to 5.825 GHz.
17. A network device, characterized in that it comprises a dual-frequency wireless access apparatus applied to a room division wireless local area network according to any one of claims 14 to 16.
18. A dual-frequency wireless access method applied to a room division wireless local area network is characterized by comprising the following steps:
the access point AP distributes a first radio frequency signal to be sent and a second radio frequency signal to be sent into at least one path of first sub radio frequency signals and at least one path of second sub radio frequency signals, wherein the number of the paths of the first radio frequency signals and the number of the second radio frequency signals are the same as that of at least one antenna connected with the access point AP;
and combining and sending one path of the first sub radio frequency signals and one path of the second sub radio frequency signals to one antenna in a one-to-one correspondence manner.
19. The method of claim 18, wherein the allocating the first rf signal and the second rf signal to be transmitted into at least one first sub rf signal and at least one second sub rf signal having the same number of channels as that of the at least one antenna connected to the first rf signal and the second rf signal respectively comprises:
carrying out average distribution on the total power of the first radio-frequency signals to be sent to obtain at least one path of first sub radio-frequency signals with the same power, and carrying out average distribution on the total power of the second radio-frequency signals to be sent to obtain at least one path of second sub radio-frequency signals with the same power; or,
distributing the total power of the first radio-frequency signal to be sent according to a preset first proportional relation to obtain at least one path of first sub radio-frequency signals of which the power values conform to the first proportional relation, and distributing the total power of the second radio-frequency signal to be sent according to a preset second proportional relation to obtain at least one path of second sub radio-frequency signals of which the power values conform to the second proportional relation; or,
dividing the first radio frequency signal to be transmitted into the at least one path of first sub radio frequency signal with a preset power value, and dividing the second radio frequency signal to be transmitted into the at least one path of second sub radio frequency signal with a preset power value.
20. The method of claim 18 or 19, further comprising:
filtering a first radio frequency signal to obtain the first radio frequency signal to be transmitted in a predetermined first working frequency band, and filtering a second radio frequency signal to obtain the second radio frequency signal to be transmitted in a predetermined second working frequency band, wherein the predetermined first working frequency band comprises: 2.4GHz to 2.4835GHz, the predetermined second operating band comprising: 5.15GHz to 5.825 GHz.
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| CN201210333552.5A CN102883335B (en) | 2012-08-08 | 2012-09-10 | Intelligence is divided single-frequency/double-frequency wireless connecting system, device and method |
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| CN102883335B (en) * | 2012-08-08 | 2016-05-04 | 福建星网锐捷网络有限公司 | Intelligence is divided single-frequency/double-frequency wireless connecting system, device and method |
| CN103139790B (en) * | 2013-01-28 | 2016-08-03 | 福建星网锐捷网络有限公司 | Being applied to room divides the intelligence of WLAN to divide wireless access device, the network equipment |
| CN103166686B (en) * | 2013-03-01 | 2015-11-25 | 福建星网锐捷网络有限公司 | The intelligence being applied to room point WLAN (wireless local area network) divides wireless access system, device and method |
| CN104080096B (en) * | 2013-03-29 | 2018-06-19 | 新华三技术有限公司 | A kind of wireless access point |
| CN103281758B (en) * | 2013-05-09 | 2016-01-27 | 福建星网锐捷网络有限公司 | Radio switch-in method, device, the network equipment, antenna and system |
| CN103957534A (en) * | 2014-01-29 | 2014-07-30 | 福建星网锐捷网络有限公司 | Wireless access system, AP and device for assisting in AP access |
| CN104363603B (en) * | 2014-10-28 | 2018-05-22 | 福建星网锐捷网络有限公司 | A kind of AP, data transmission method for uplink and data receiver method |
| CN105681221B (en) * | 2014-11-18 | 2019-06-28 | 上海诺基亚贝尔股份有限公司 | Active queue management method and software definition control device for hybrid access networks |
| CN105634541B (en) * | 2015-12-29 | 2018-11-27 | 北京邮电大学 | Full duplex is taken can communication means and node |
| CN105744603B (en) * | 2016-04-26 | 2019-08-20 | 锐捷网络股份有限公司 | A kind of multiple users wireless local area network access method and access point AP |
| CN107666687B (en) * | 2016-07-28 | 2020-02-14 | 华为技术有限公司 | Scheduling method and Access Point (AP) |
| CN109640484B (en) * | 2018-12-26 | 2021-09-28 | 合肥大明智联科技股份有限公司 | Single lamp controller |
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Address after: Cangshan District of Fuzhou City, Fujian province 350002 Jinshan Road No. 618 Garden State Industrial Park 19 floor Patentee after: RUIJIE NETWORKS CO., LTD. Address before: Cangshan District of Fuzhou City, Fujian province 350002 Jinshan Road No. 618 Garden State Industrial Park 19 floor Patentee before: Fujian Xingwangruijie Network Co., Ltd. |