CN111835371A - Multichannel WIFI signal transceiver - Google Patents
Multichannel WIFI signal transceiver Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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- H—ELECTRICITY
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- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0064—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
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- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
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- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
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Abstract
The application relates to a multichannel WIFI signal transceiver. The device comprises more than two wireless hot spot devices, more than two band-pass filtering devices, more than two frequency moving devices, more than two antenna switching devices and an antenna device, wherein the wireless hot spot devices, the band-pass filtering devices, the frequency moving devices, the antenna switching devices and the antenna device are sequentially connected, the antenna device comprises at least two antenna array layers which are arranged in a stacked mode, and the antenna array layers are connected with the antenna switching devices. The frequency moving device can move high-frequency band signals to a low-frequency band, the low-frequency band signals are longer in wavelength and stronger in penetrating power, the coverage range of WIFI signals can be enlarged, the WIFI signal transmitting device is not obstructed by obstacles such as buildings or trees and is more suitable for severe weather, more than two wireless hotspot devices, band-pass filtering devices, the frequency moving device, the antenna switching device and the antenna array layer are arranged, a multi-input multi-output signal transmission channel can be formed, and the use reliability of the multi-channel WIFI signal transmitting and receiving device is improved.
Description
Technical Field
The application relates to the field of wireless technology, in particular to a multichannel WIFI signal transceiver.
Background
WIFI is a wireless local area network technology established in the IEEE 802.11 standard, and improves the interoperability between wireless network products based on the standard. WIFI belongs to a short-distance wireless technology, has the advantages of high transmission speed, low transmitting power, no need of wiring and the like, can meet personal and social informatization requirements, can automatically adjust bandwidth under the condition of weak signals, and effectively ensures the stability and reliability of a network.
The coverage range of the WIFI signal transmitted by the traditional WIFI signal transmission device is limited, a user cannot receive the WIFI signal in an area beyond the coverage range of the WIFI, normal use of the user is affected, and reliability is low.
Disclosure of Invention
In view of this, it is necessary to provide a multi-channel WIFI signal transceiver for solving the problem of low reliability of the conventional WIFI signal transmission device.
A multi-channel WIFI signal transceiving device comprises a wireless hotspot device, a band-pass filtering device, a frequency moving device, an antenna switching device and an antenna device, wherein the wireless hotspot device is connected with the band-pass filtering device, the band-pass filtering device is connected with the frequency moving device, the frequency moving device is connected with the antenna switching device, the antenna switching device is connected with the antenna device, the antenna device comprises at least two antenna array layers which are arranged in a stacked mode, and the antenna array layers are connected with the antenna switching device; the number of the antenna switching devices is more than two, each antenna switching device is respectively connected with the corresponding antenna array layer, the number of the frequency moving devices, the number of the band-pass filtering devices and the number of the wireless hotspot devices are equal to the number of the antenna switching devices, each frequency moving device is respectively connected with the corresponding band-pass filtering device, and each band-pass filtering device is respectively connected with the corresponding wireless hotspot device.
Above-mentioned multichannel WIFI signal transceiver, wireless hotspot device are used for producing the WIFI signal, and the WIFI signal that produces sends to the frequency after band-pass filter device filters and removes the device, and the frequency that the device can realize the signal is removed to the frequency, removes the high band signal to the low band, and the signal after removing is through antenna switching device and antenna device transmission again. Because the low-frequency band signal has longer wavelength and stronger penetrating power, the coverage range of the WIFI signal can be enlarged by moving the WIFI signal to the low-frequency band and then transmitting the WIFI signal out through the antenna device, the antenna device is not obstructed by obstacles such as buildings or trees and is more suitable for severe weather, the antenna device comprises more than two antenna array layers which are arranged in a stacked mode, the number of the antenna switch devices is more than two, and each antenna switch device is respectively connected with the corresponding antenna array layer, the number of the frequency moving device, the band-pass filter device and the wireless hot spot device is equal to the number of the antenna switch devices, and is more than two, and each frequency moving device is connected with a corresponding band-pass filter device, each band-pass filter device is connected with a corresponding wireless hot spot device, a multi-input multi-output signal transmission channel can be formed, and the use reliability of the multi-channel WIFI signal receiving and transmitting device is improved.
Drawings
Fig. 1 is a block diagram of a multi-channel WIFI signal transceiver in an embodiment;
fig. 2 is a block diagram of a multi-channel WIFI signal transceiver in another embodiment;
fig. 3 is a block diagram of a multi-channel WIFI signal transceiver in yet another embodiment;
FIG. 4 is a block diagram of an antenna assembly in one embodiment;
fig. 5 is a block diagram of a multi-channel WIFI signal transceiver in yet another embodiment;
fig. 6 is a block diagram of a multi-channel WIFI signal transceiver device in yet another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described more fully below by way of examples in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In an embodiment, please refer to fig. 1, which provides a multi-channel WIFI signal transceiver, including a wireless hotspot device 100, a band-pass filter device 200, a frequency shifting device 300, an antenna switch device 400 and an antenna device 500, wherein the wireless hotspot device 100 is connected to the band-pass filter device 200, the band-pass filter device 200 is connected to the frequency shifting device 300, the frequency shifting device 300 is connected to the antenna switch device 400, the antenna switch device 400 is connected to the antenna device 500, the antenna device 500 includes at least two stacked antenna array layers 510, the antenna array layers 510 are connected to the antenna switch device 400, the number of the antenna switch devices 400 is more than two, each antenna switch device 400 is connected to a corresponding antenna array layer 510, the number of the frequency shifting device 300, the number of the band-pass filter device 200 and the wireless hotspot device 100 is equal to the number of the antenna switch devices 400, and each frequency shifting device 300 is connected to a corresponding band-pass filter device 200, each bandpass filter 200 is connected to a corresponding wireless hotspot device 100. The wireless hotspot device 100 is used for generating WIFI signals, the generated WIFI signals are filtered by the band-pass filter device 200 and then sent to the frequency moving device 300, the frequency moving device 300 can move the frequency of the signals, the high-frequency band signals are moved to the low-frequency band, and the moved signals are transmitted out through the antenna switch device 400 and the antenna device 500. Because the low-frequency band signal wavelength is longer, and the penetrating power is stronger, move the WIFI signal to the low-frequency band after the rethread antenna device 500 launches can increase the coverage of WIFI signal, and do not receive the separation of barriers such as building or trees, more be adapted to bad weather, use the reliability height.
Specifically, wireless hotspot device 100 primarily provides access to and from a wired local area network by a multi-channel WIFI signal transceiver through which wireless workstations within the coverage area of the access point to which wireless hotspot device 100 accesses may communicate with one another. When the WIFI signal is transmitted, the wireless hotspot device 100 is connected to the network to process and then transmits the processed signal to the band-pass filter device 200 in the form of the WIFI signal, the band-pass filter device 200 transmits the filtered signal to the frequency moving device 300, the frequency moving device 300 can move the frequency of the signal, the signal in the high frequency band is moved to the low frequency band, and the moved signal is transmitted through the antenna switch device 400 and the antenna device 500. When receiving a WIFI signal, the antenna device 500 may sense an electromagnetic signal in a space and then transmit the electromagnetic signal to the antenna switch device 400, the antenna switch device 400 transmits the signal to the frequency moving device 300, the frequency moving device 300 may move the frequency of the signal, move a low-frequency band signal to a high-frequency band, transmit the moved signal to the band-pass filter device 200 for filtering, transmit the filtered signal to the wireless hotspot device 100, and enable a user to access the multi-channel WIFI signal transceiver from a wired local area network through the wireless hotspot device 100.
The band-pass filter 200 is mainly used to filter the signals flowing through, allowing the signals in a specific frequency band to pass through while shielding the signals in other frequency bands. According to different actual requirements, the bandpass filtering device 200 with different structures can be adopted, so that the signals of the reserved and filtered frequency bands are different, and the application range is wider.
The frequency shifting device 300 uses analog mixer technology to shift the high-band signal to the low-band signal or shift the low-band signal to the high-band signal, the structure of the frequency shifting device 300 is not unique, for example, an analog multiplier frequency converter or a crystal triode mixer may be used, and it can be understood that the frequency shifting device 300 may also use other structures as long as those skilled in the art can realize the frequency shifting device.
The number of the frequency shifting devices 300, the band-pass filtering devices 200 and the wireless hotspot devices 100 is equal to the number of the antenna switch devices 400, each frequency shifting device 300 is connected with the corresponding band-pass filtering device 200, and each band-pass filtering device 200 is connected with the corresponding wireless hotspot device 100. In each signal channel, one antenna switch device 400 is correspondingly connected with one frequency moving device 300, one band-pass filter device 200 is correspondingly connected with one frequency moving device 300, one wireless hotspot device 100 is correspondingly connected with one band-pass filter device 200, so that the independence of signal transmission among the channels can be kept, the mutual interference of signals is avoided, and the multichannel WIFI signal transceiver comprises a plurality of signal channels, so that the application range is wide.
The antenna switching device 400 can control the on/off of signals between the antenna device 500 and the frequency moving device 300, when the multichannel WIFI signal transceiver device is required to work, the antenna switching device 400 is turned on, signals can be normally transmitted between the antenna device 500 and the frequency moving device 300, and when the antenna switching device 400 is turned off, the multichannel WIFI signal transceiver device is in a standby state. Antenna device 500 is the carrier of receiving and sending signal, and antenna device 500 can sense the electromagnetic signal in the space, also can go out signal propagation, realizes the receiving and dispatching of WIFI signal, and it is convenient to use. The number of the antenna switch devices 400 is more than two, and each antenna switch device 400 is connected to the corresponding antenna array layer 510, further, the number of the antenna array layers 510 connected to each antenna switch device 400 may be completely the same, may be partially the same, or may be completely different, and each antenna switch device 400 is connected to the corresponding antenna array layer 510 to form a signal transceiving channel, thereby forming a multi-input multi-output structure. In an embodiment, the number of the antenna array layers 510 respectively connected to each antenna switch device 400 is different from each other, for example, the number of the antenna array layers 510 connected to each antenna switch device 400 may be sequentially increased, and the corresponding signal transceiving channels may be selected to operate according to actual requirements, so that the operation convenience of the multi-channel WIFI signal transceiving device is improved.
The antenna device 500 includes at least two antenna array layers 510 stacked in layers, the longitudinal dimension can be increased on the basis of a two-dimensional antenna planar array layer, beam forming is performed at the far end of the radiation direction, and the antenna device 500 has higher gain, for example, when the number of the antenna array layers 510 is two layers, the gain of 3dB can be theoretically increased, when the number of the antenna array layers 510 is three layers, the gain of 5dB can be theoretically increased, when the number of the antenna array layers 510 is more than three layers, the higher gain can be increased, so that the WIFI signal transmission distance received and transmitted by the multi-channel WIFI signal transceiver is longer, the coverage is larger, and the reliability is high. In addition, the antenna device 500 including at least two antenna array layers 510 stacked in a stacked manner is a three-dimensional structure, and the configuration of the three-dimensional structure can effectively improve the space utilization efficiency, enrich the configuration of the antenna device 500, and reduce the cost.
In one embodiment, please refer to fig. 2, the multi-channel WIFI signal transceiver further includes a control device 900 and measurement devices 800, the number of the measurement devices 800 is equal to the number of the wireless hotspot devices 100, each measurement device 800 is connected to a corresponding wireless hotspot device 100, each measurement device 800 is connected to the control device 900, and the control device 900 is connected to the wireless hotspot devices 100; the measurement device 800 is configured to measure a connection signal of each wireless hotspot device 100, obtain a measurement result, send the measurement result to the control device 900, and the control device 900 controls the output power of each wireless hotspot device 100 according to the measurement result.
Specifically, in one signal channel, one measurement device 800 is connected to one wireless hotspot device 100, the measurement device 800 is configured to measure a connection signal of the wireless hotspot device 100, obtain a measurement result and send the measurement result to the control device 900, since the number of the measuring devices 800 and the number of the wireless hotspot devices 100 are more than two, the multi-channel WIFI signal transceiver includes a plurality of signal transceiver channels, the measuring device 800 in each signal channel measures the connection signal of the wireless hotspot device 100, and after the obtained measurement result is sent to the control device 900 and the control device 900 receives the measurement result of each channel, the output power of wireless hotspot device 100 in each signal channel is controlled according to the measurement result, for example, increasing the output power of a part of wireless hotspot devices 100, decreasing the output power of a part of wireless hotspot devices 100, or maintaining the output power of a part of wireless hotspot devices 100 unchanged. The structure of the measurement apparatus 800 is not unique, and different structures may correspond to different signal types, and serve as a basis for the control apparatus 900 to control the output power of the wireless hotspot apparatus 100, and may be adjusted according to actual requirements. The type of the control Device 900 is not exclusive, and may be, for example, a CPLD (Complex Programmable Logic Device), an FPGA (Field-Programmable Gate Array), or a single chip microcomputer. The CPLD as the control device 900 has the advantages of flexible programming, high integration level, wide application range, low design and manufacturing cost, and the like. The FPGA serving as the control device 900 is low in design cost and high in working stability. The single chip microcomputer has the advantages of small size, simple structure and high reliability. It is understood that in other embodiments, the control device 900 may employ other devices as long as those skilled in the art recognize that the implementation is possible.
In one embodiment, the measurement comprises a received signal strength indicator value. Control device 700 is configured to control the output power of wireless hotspot device 100 according to the received signal strength indication value and preset signal strength reference data.
Specifically, the received Signal Strength indicator value, i.e. rssi (received Signal Strength indicator) value, is the received broadband received power over the channel bandwidth, and can be used as one of the bases for evaluating the quality of the data connection. The preset signal strength reference data may be a preset upper limit, a preset lower limit, or a preset reference range, and taking the preset signal strength reference data as the preset upper limit as an example, when the received signal strength indication value sent by the measurement apparatus 800 exceeds the upper limit, it is determined that reverse link interference exists in the data transmission channel, and at this time, the control apparatus 900 controls the wireless hotspot apparatus 100 in the signal channel to reduce output power, so as to reduce the influence of signal interference and improve the reliability of signal transmission. It is understood that, in other embodiments, when the received signal strength indication value sent by the measurement apparatus 800 is lower than the preset lower limit or exceeds the preset reference range, the control apparatus 900 may make a corresponding adjustment on the output power of the wireless hotspot apparatus 100 to improve the working performance of the wireless hotspot apparatus 100, in a case that the preset signal strength reference data is the preset lower limit or the reference range. When the measurement result includes the received signal strength indication value, the corresponding measurement device 800 may be a chip with a model CC2530, which has high integration level and can obtain an accurate RSSI value.
In one embodiment, the measurement results include channel quality indicator values. Control device 900 is configured to control the output power of wireless hotspot device 100 according to the channel quality indicator value and preset channel quality reference data.
Specifically, a Channel Quality Indicator (CQI) value is one of the measurement criteria of the communication Quality of a radio Channel, and corresponds to the signal-to-noise ratio of the Channel, that is, the CQI is directly related to the network coverage. Generally, the value range of the CQI is 0 to 31, when the CQI is 0, the channel quality is the worst, and when the CQI is 31, the channel quality is the best, and the common value is 12 to 24. The preset channel quality reference data may be a preset upper limit value, a preset lower limit value or a preset reference range, and taking the preset channel quality reference data as the preset upper limit value as an example, when the received signal strength indicated value sent by the measurement device 800 exceeds the upper limit value, it is considered that the quality of the signal transmitted in the data transmission channel is high, and at this time, the control device 900 may control the wireless hotspot device 100 to appropriately reduce the output power, so as to save the resource cost of the wireless hotspot device 100 and improve the reliability of the multichannel WIFI signal transceiving device.
In one embodiment, the measurement results include access load values. Control device 900 is configured to control the output power of each wireless hotspot device 100 according to the access load value and the preset access load reference data.
Specifically, under the effect of the high-gain antenna device 500, the coverage of the WIFI signal is increased, and the multi-channel WIFI signal transceiver includes multiple signal channels, which may cause the problem of unbalanced load of the wireless hotspot device 100. The measurement device 800 measures the load accessed by the wireless hotspot device 100 in each signal channel to obtain a measurement result, and sends the measurement result to the control device 900, and the control device 900 is configured to control the output power of each wireless hotspot device 100 according to the access load value and preset access load reference data. The preset access load reference data may be a preset upper limit value, a preset lower limit value, or a preset reference range, and taking the preset access load reference data as the preset upper limit value as an example, when the access load value sent by one measurement device 800 exceeds the upper limit value, it is considered that the load of the wireless hotspot device 100 in the data transmission channel is too large, at this time, the control device 900 controls the wireless hotspot device 100 to appropriately reduce the output power, and may also control the wireless hotspot devices 100 in other signal channels to appropriately increase the output power, so as to guide a part of users of the wireless hotspot device 100 with a heavy load to the nearby idle wireless hotspot device 100, so as to achieve the effect of load balancing, and increase the throughput of the network. Further, when the access load of the wireless hotspot device 100 is not within the proper range, the number of antenna array layers 510 used for accessing in the signal channel where the wireless hotspot device 100 is located may also be adjusted to adjust the signal coverage of the multi-channel WIFI signal transceiver, thereby achieving the effect of adjusting the access load of the wireless hotspot device 100.
In one embodiment, the measurement results include the number of access users. Control device 900 is configured to control the output power of each wireless hotspot device 100 according to the number of access users and the reference data of the preset number of access users.
Specifically, the measurement device 800 measures the number of access users of the wireless hotspot device 100 in each signal channel to obtain a measurement result, and sends the measurement result to the control device 900, where the control device 900 is configured to control the output power of each wireless hotspot device 100 according to the number of access users and the reference data of the preset number of access users. The preset reference data of the number of access users may be a preset upper limit, a preset lower limit, or a preset reference range, and taking the preset reference data of the number of access users as the preset upper limit as an example, when the number of access users sent by a certain measuring device 800 exceeds the upper limit, it is considered that there are too many users accessed by the wireless hotspot device 100 in the data transmission channel, at this time, the control device 900 controls the wireless hotspot device 100 to appropriately reduce the output power, and may also control the wireless hotspot devices 100 in other signal channels to appropriately increase the output power, so that some users of the wireless hotspot device 100 reside on nearby wireless hotspot devices 100 that are relatively idle, and the users are guided to uniformly reside on each wireless hotspot device 100, so as to optimize network performance. Further, when the number of access users of the wireless hotspot device 100 is not within a proper range, the number of antenna array layers 510 used for accessing in the signal channel where the wireless hotspot device 100 is located may also be adjusted to adjust the signal coverage of the multi-channel WIFI signal transceiver, thereby achieving the effect of adjusting the number of access users of the wireless hotspot device 100.
Further, the measurement result includes at least one of a received signal strength indication value, a channel quality indication value, an access load value, and a number of access users, and taking as an example that the measurement result includes all of a signal strength indication value, a channel quality indication value, an access load value, and a number of access users, the control device 900 is provided with corresponding signal strength reference data, channel quality reference data, access load reference data, and access user number reference data, the measurement result is compared with reference data corresponding to a signal type, and the control device 900 controls the output power of the wireless hotspot device 100 according to the comparison result. When the measurement results all include the signal strength indication value, the channel quality indication value, the access load value and the number of access users, a further judgment rule can be set to determine the comparison priority of different types of signals. For example, priorities or weighting coefficients may be set for different signal types, and specifically, taking setting of weighting coefficients as an example, the control device 900 may perform weighted summation according to different types of values and corresponding weighting coefficients, and compare the result of the weighted summation with preset reference data to control the output power of the wireless hotspot device 100.
In one embodiment, referring to fig. 3, the band-pass filtering device 200 includes a first band-pass filter 210 and a second band-pass filter 220, the frequency shifting device 300 includes a transmitting channel frequency shifter 310 and a receiving channel frequency shifter 320, the first band-pass filter 210 is connected to the wireless hot spot device 100, the transmitting channel frequency shifter 310 is connected to the first band-pass filter 210, the antenna switch device 400 is connected to the transmitting channel frequency shifter 310, the second band-pass filter 220 is connected to the wireless hot spot device 100, the receiving channel frequency shifter 320 is connected to the second band-pass filter 220, and the antenna switch device 400 is connected to the receiving channel frequency shifter 320.
Specifically, in the multi-channel WIFI signal transceiver device, the transmission and reception of the WIFI signal are transmitted through the signal transmission channel and the signal reception channel, respectively, the signal transmission channel includes the first band pass filter 210 and the transmission channel frequency shifter 310, and the signal reception channel includes the second band pass filter 220 and the reception channel frequency shifter 320. When transmitting a signal, the wireless hotspot device 100 generates a WIFI signal, the frequency of the generated signal is generally high, only a signal of a specific frequency band is reserved after the high-frequency signal is transmitted to the first band-pass filter 210, and then the signal is transmitted to the first frequency shifter, the signal of the specific frequency band is shifted to a low frequency band by the first frequency shifter and then is transmitted to the antenna switch device 400, the antenna device 500 receives the signal transmitted by the antenna switch device 400 and then radiates to the space, and the transmission of the WIFI signal is completed. Since the signal transmitted by the antenna device 500 is a low-frequency band signal, the penetration capability is strong, and the signal coverage is large. When receiving a signal, the antenna device 500 receives an electromagnetic signal of a space and sends the electromagnetic signal to the second band-pass filter 220 via the antenna switch device 400, the second band-pass filter 220 filters out clutter in the signal and then sends the clutter to the wireless hotspot device 100, and the wireless hotspot device 100 processes the signal and then receives a WIFI signal.
In this embodiment, taking the example that the number of the antenna array layers 510 connected to each antenna switch device 400 is sequentially increased, the number of the antenna switch devices 400 is N, the first antenna switch device 400 is connected to two antenna array layers 510, the second antenna switch device 400 is connected to three antenna array layers 510, and so on, and the nth antenna switch device 400 is connected to N +1 antenna array layers 510. Taking the first antenna switch device 400 as an example, two antenna array layers 510 are connected to the antenna switch device 400, the antenna switch device 400 is sequentially connected to the transmitting channel frequency shifter 310, the first band pass filter 210 and the wireless hot spot device 100, and the antenna switch device 400 is further sequentially connected to the receiving channel frequency shifter 320, the second band pass filter 220 and the wireless hot spot device 100 to form a signal transmitting channel and a signal receiving channel, respectively. Each antenna switch device 400 is independently provided with one frequency moving device 300 and one band-pass filter device 200 to form a plurality of signal transmitting channels and signal receiving channels, so that multi-beam configuration can be realized, and the application range of the multi-channel WIFI signal transceiver can be expanded. Since the number of the antenna array layers 510 connected to each antenna switch apparatus 400 is different, the gain effect of each antenna switch apparatus 400 is also different, specifically, the gain is higher when the number of the antenna array layers 510 is larger. During the in-service use, can put into use according to needs such as signal strength and coverage adjustment corresponding quantity's antenna array layer 510, be favorable to the rational utilization resource, improve multichannel WIFI signal transceiver's reliability in utilization.
The types of the first band pass filter 210, the second band pass filter 220, the transmission channel frequency shifter 310, and the reception channel frequency shifter 320 are not unique, in this embodiment, taking the high-band signal frequency as 2.4GHz and the low-band signal frequency as 700MHz as an example, both the first band pass filter 210 and the second band pass filter 220 are 2.4GHz band pass filters, which only allow signals with a frequency of 2.4GHz to pass through, and filter signals with other frequencies, thereby improving the quality of transmission signals. The transmission channel frequency shifter 310 is a 2.4GHz to 700MHz frequency shifter, converts a high-frequency signal with a frequency of 2.4GHz into a low-frequency signal with a frequency of 700MHz, and then transmits the low-frequency signal through the antenna switch device 400 by the antenna device 500, which is beneficial to improving the coverage of the signal. The receiving channel frequency shifter 320 is a 700MHz to 2.4GHz frequency shifter, converts a low-frequency signal with a frequency of 700MHz into a high-frequency signal with a frequency of 2.4GHz, and sends the high-frequency signal to the second band-pass filter 220, and the second band-pass filter 220 filters out signals with other frequencies and only keeps signals with a frequency of 2.4GHz and sends the signals to the wireless hotspot device 100 for network conversion and sharing, which is beneficial to improving the working performance of WIFI signals. It is understood that the frequency of the high band signal is not limited to 2.4GHz, but may also be 3.5GHz, 5.8GHz or other frequencies, and the frequency of the low band signal is not limited to 700MHz, but may also be 400MHz, 800MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 3300MHz or other frequencies, as long as one skilled in the art can realize the purpose. The transmission and the reception of signals are realized by different lines, so that the mutual interference between a transmitting channel and a receiving channel can be reduced, and the performance of signal transmission is improved.
The switching of the working state of receiving or transmitting the WIFI signal may also be implemented by the antenna switching device 400, and the antenna switching device 400 includes a signal receiving circuit, a signal transmitting circuit and a switch, and the switch is connected to the antenna device 500, connected to the receiving channel frequency shifter 320 through the signal receiving circuit, and connected to the transmitting channel frequency shifter 310 through the signal transmitting circuit. When the switch is turned on, the antenna switching device 400 controls the antenna device 500 to be in a transmitting state, when the switch is turned on, the antenna switching device 400 controls the antenna device 500 to be in a receiving state, and when the switch is turned on, the antenna device 500 does not operate and the device is in a shutdown state. The switch may be connected to the controller, and the transmission, reception, or shutdown operation state of the antenna apparatus 500 may be switched according to a control signal sent by the controller, or the switch may be manually controlled, and the user manually switches the operation state according to his own requirement.
In an embodiment, referring to fig. 3, the multi-channel WIFI signal transceiver further includes a third band-pass filter 610, wherein one end of the third band-pass filter 610 is connected to the transmission channel frequency shifter 310, and the other end is connected to the antenna switch device 400.
The type of the third band pass filter 610 is not unique, and for example, the high-band signal frequency is 2.4GHz, and the low-band signal frequency is 700MHz, the transmission channel frequency shifter 310 is a 2.4GHz to 700MHz frequency shifter, and can convert the high-frequency signal with the frequency of 2.4GHz into a low-frequency signal with the frequency of 700MHz and send the low-frequency signal to the third band pass filter 610, and the third band pass filter 610 is a 700MHz band pass filter, so that it can be ensured that the signal sent to the antenna switching device 400 only includes the low-frequency signal with the frequency of 700MHz, and the purity of the signal is improved. It is understood that in other embodiments, the third band pass filter 610 may also be a band pass filter of other frequencies, and is determined by the frequency of the signal converted by the transmission channel frequency shifter 310 connected to the band pass filter, so as to ensure the frequency requirement of the signal.
In an embodiment, referring to fig. 3, the multi-channel WIFI signal transceiver further includes a transmitting channel amplifier 710 and a receiving channel amplifier 720, wherein one end of the transmitting channel amplifier 710 is connected to the transmitting channel frequency shifter 310, the other end of the transmitting channel amplifier 710 is connected to the third band-pass filter 610, one end of the receiving channel amplifier 720 is connected to the receiving channel frequency shifter 320, and the other end of the receiving channel amplifier 720 is connected to the antenna switch apparatus 400. The transmit channel amplifier 710 and the receive channel amplifier 720 may amplify signals to improve reliability of signal transmission.
Specifically, the types of the transmission channel amplifier 710 and the reception channel amplifier 720 are not unique, for example, in this embodiment, the transmission channel amplifier 710 is a power amplifier, the reception channel amplifier 720 is a low noise amplifier, when sending a WIFI signal, the wireless hotspot device 100 sends the signal to the power amplifier for power amplification, so that the output signal has a sufficiently large power to meet the requirement, and the amplified signal is radiated into the space by the antenna device 500 through the antenna switch device 400, thereby realizing sending of the WIFI signal. When receiving a WIFI signal, the antenna device 500 may sense an electromagnetic signal in the space and then send the electromagnetic signal to the antenna switching device 400, the antenna switching device 400 transmits the signal to the low noise amplifier for amplification, and the amplified signal is sent to the wireless hotspot device 100 via the band-pass filter device 200 to be demodulated to obtain the WIFI signal, so that the WIFI signal is received. It is understood that in other embodiments, the transmit path amplifier 710 and the receive path amplifier 720 may be other types of amplifiers, as deemed practicable by those skilled in the art.
In one embodiment, referring to fig. 4, the antenna array layer 510 includes a substrate 512 and an antenna array 514 disposed on the substrate 512, wherein the antenna array 514 is connected to the antenna switch device 400. Specifically, the substrate 512 is a carrier of the antenna array 514, so as to facilitate the arrangement of the antenna array 514 and protect the antenna array 514 to a certain extent. The spacing between the antenna array layers 510 is not unique, and may be, for example, greater than or equal to 0.5 λ, where λ is the wavelength of the center frequency of the antenna array 514, and the spacing between the antenna array layers 510 may reduce the mutual influence of signals between the antenna array layers 510, thereby improving the performance of the antenna apparatus 500.
In one embodiment, antenna array 514 is a dual polarized planar array. The dual-polarized planar array includes a plurality of dual-polarized oscillators, and specifically, the arrangement of the dual-polarized oscillators is not unique, for example, the dual-polarized planar array may be a linear array along both the X-axis direction and the Y-axis direction on the substrate 512, and the dual-polarized planar array is arranged such that the oscillators in different polarization directions can be ensured to have sufficient isolation even though being overlapped, thereby saving the installation space and further increasing the size of the antenna apparatus 500. It is understood that in other embodiments, the dual-polarized oscillators may be disposed on the substrate 512 in other arrangement manners, which may be determined according to specific requirements. The antenna array layer 510 includes a substrate 512 and an antenna element disposed on the substrate 512, and the antenna device 500 includes at least two antenna array layers 510 stacked in layers, so that the antenna elements are arranged along three directions of an X axis, a Y axis and a Z axis to form a three-dimensional array antenna structure, so that the antenna device 500 can form a vertical plane beam, thereby improving the overall gain of the antenna device 500, and meanwhile, the configuration of the three-dimensional structure can effectively improve the space utilization efficiency, enrich the configuration of the antenna device 500, and reduce the cost.
In one embodiment, the substrate 512 is a metal substrate 512. The metal substrate 512 has high mechanical strength, the metal substrate 512 is used as a carrier of the antenna array 514 to improve the protection effect on the antenna array 514, and the metal substrate 512 has the advantages of corrosion resistance, good heat dissipation, good processing performance and the like, is low in processing difficulty and low in manufacturing cost, and can effectively prolong the service life of the antenna device 500. It is understood that in other embodiments, the substrate 512 may be made of other materials, as long as one skilled in the art can realize the substrate 512.
In one embodiment, the substrates 512 are the same size. Because each base plate 512 is the range upon range of setting, adopt the base plate 512 that the size is the same can reduce the degree of difficulty when installing, further, the quantity that sets up antenna array 514 on every base plate 512 also can be equal, makes every antenna layer realize that the work load of WIFI signal receiving and dispatching is balanced basically, can also reduce signal processing's complexity. It is understood that, in other embodiments, the size of each substrate 512 or the number of the antenna arrays 514 disposed on each substrate 512 may also be different, and may be adjusted according to actual requirements. Further, the shape of the substrate 512 is not unique, for example, the substrate 512 may be rectangular, which is convenient for the antenna array 514 to be arranged in different arrangement modes, and is also convenient for the substrate 512 to be split or recombined during early installation or post-processing, so as to meet different requirements of different occasions, and the antenna array is convenient and fast to use and has high reliability.
In one embodiment, referring to fig. 4, the substrates 512 are connected by a connecting member 520. The base plate 512 is connected through the connecting piece 520 and can play good fixed action to each base plate 512, and in addition, when being swing joint's relation between connecting piece 520 and the base plate 512, each base plate 512 passes through the connecting piece 520 and connects the installation and the split that can be convenient for base plate 512, and it is convenient to use. Specifically, the position of the connecting member 520 on the substrate 512 is not unique, and for example, the connecting member 520 may be disposed at the center of the substrate 512 to perform a good fixing function, or may be disposed at other positions of the substrate 512, which may be specifically adjusted according to actual requirements. It is understood that in other embodiments, the substrates 512 can be connected in other manners, such as adhesion, which is simple and low-cost.
In one embodiment, the number of the connection members 520 is more than two. The number of the connecting members 520 is not unique, for example, when the number of the connecting members 520 is two, two connecting members 520 may be respectively disposed at both ends of one diagonal line of the substrate 512, which is advantageous for the stability of the substrate 512, when the number of the connecting members 520 is three, the three connecting members 520 may be disposed according to a triangular shape layout, so that the substrates 512 may be better fixed to each other, and when the number of the connecting members 520 is four, the four connecting members 520 may be respectively disposed at four corners of the substrate 512, thereby ensuring the firmness of the connection between the substrates 512. It is understood that in other embodiments, the number of the connecting members 520 may be 1, as long as one skilled in the art can realize the purpose of connecting the substrates 512. The material of the connecting member 520 is not unique, for example, the resin connecting member 520 can be adopted, the resin can be melted after being heated, the plasticity is facilitated, the cost is low, and the use cost of the multichannel WIFI signal transceiver can be reduced by adopting the resin connecting member 520.
For a better understanding of the above-described embodiments, reference will now be made in detail to two specific embodiments,
representing a dual polarized planar antenna array 514. In one embodiment, referring to fig. 5, a conventional WIFI AP (Access Point) (e.g., 2.4GHz) is used to transmit (receive) a signal through a stereo antenna by frequency shifting to a low frequency band (e.g., 700MHz) suitable for large-scale coverage. In one embodiment, referring to fig. 6, the signal is amplified and then transmitted (received back) through a stereo antenna by frequency shifting to a lower frequency band (e.g., 700MHz) that is preferably covered by a large range using a conventional WIFI AP (e.g., 2.4 GHz). Through the three-dimensional group array of multilayer antenna element, improve antenna whole gain, utilize the good characteristics of low frequency signal transmission characteristic, improve the coverage effect, utilize the characteristics of three-dimensional array antenna high gain, solve the shortcoming that present WIFI transmission distance is close, synthesize two advantages of three-dimensional antenna and low band transmission, can realize that WIFI covers by a wide margin.
Above-mentioned multichannel WIFI signal transceiver, wireless hotspot device are used for producing the WIFI signal, and the WIFI signal that produces sends to the frequency after band-pass filter device filters and removes the device, and the frequency that the device can realize the signal is removed to the frequency, removes the high band signal to the low band, and the signal after removing is through antenna switching device and antenna device transmission again. Because the low-frequency band signal has longer wavelength and stronger penetrating power, the coverage range of the WIFI signal can be enlarged by moving the WIFI signal to the low-frequency band and then transmitting the WIFI signal out through the antenna device, the antenna device is not obstructed by obstacles such as buildings or trees and is more suitable for severe weather, the antenna device comprises more than two antenna array layers which are arranged in a stacked mode, the number of the antenna switch devices is more than two, and each antenna switch device is respectively connected with the corresponding antenna array layer, the number of the frequency moving device, the band-pass filter device and the wireless hot spot device is equal to the number of the antenna switch devices, and is more than two, and each frequency moving device is connected with a corresponding band-pass filter device, each band-pass filter device is connected with a corresponding wireless hot spot device, a multi-input multi-output signal transmission channel can be formed, and the use reliability of the multi-channel WIFI signal receiving and transmitting device is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A multi-channel WIFI signal transceiving device is characterized by comprising a wireless hotspot device, a band-pass filtering device, a frequency moving device, an antenna switching device and an antenna device, wherein the wireless hotspot device is connected with the band-pass filtering device, the band-pass filtering device is connected with the frequency moving device, the frequency moving device is connected with the antenna switching device, the antenna switching device is connected with the antenna device, the antenna device comprises at least two antenna array layers which are arranged in a stacked mode, and the antenna array layers are connected with the antenna switching device; the number of the antenna switching devices is more than two, each antenna switching device is respectively connected with the corresponding antenna array layer, the number of the frequency moving devices, the number of the band-pass filtering devices and the number of the wireless hotspot devices are equal to the number of the antenna switching devices, each frequency moving device is respectively connected with the corresponding band-pass filtering device, and each band-pass filtering device is respectively connected with the corresponding wireless hotspot device.
2. The device according to claim 1, further comprising a control device and a measuring device, wherein the number of the measuring devices is equal to the number of the wireless hotspot devices, each measuring device is connected to a corresponding wireless hotspot device, each measuring device is connected to the control device, and the control device is connected to the wireless hotspot devices; the measuring device is used for measuring the connecting signals of the wireless hotspot devices to obtain measuring results and sending the measuring results to the control device, and the control device controls the output power of the wireless hotspot devices according to the measuring results.
3. The apparatus of claim 2, wherein the measurement comprises a received signal strength indicator value; the control device is used for controlling the output power of each wireless hotspot device according to the received signal strength indicating value and preset signal strength reference data.
4. The apparatus of claim 2, wherein the measurement results comprise channel quality indicator values; and the control device is used for controlling the output power of each wireless hotspot device according to the channel quality indication value and preset channel quality reference data.
5. The apparatus of claim 2, wherein the measurement results comprise access load values; and the control device is used for controlling the output power of each wireless hotspot device according to the access load value and preset access load reference data.
6. The apparatus of claim 2, wherein the measurement result comprises a number of access users; and the control device is used for controlling the output power of each wireless hotspot device according to the number of the access users and preset reference data of the number of the access users.
7. The apparatus according to claim 1, wherein the band-pass filter device comprises a first band-pass filter and a second band-pass filter, the frequency shifter device comprises a transmitting channel frequency shifter and a receiving channel frequency shifter, the first band-pass filter is connected to the wireless hot spot device, the transmitting channel frequency shifter is connected to the first band-pass filter, the antenna switch device is connected to the transmitting channel frequency shifter, the second band-pass filter is connected to the wireless hot spot device, the receiving channel frequency shifter is connected to the second band-pass filter, and the antenna switch device is connected to the receiving channel frequency shifter.
8. The apparatus of claim 7, further comprising a third band-pass filter, wherein one end of the third band-pass filter is connected to the transmission channel frequency shifter, and the other end of the third band-pass filter is connected to the antenna switching device.
9. The apparatus according to claim 8, further comprising a transmission channel amplifier and a reception channel amplifier, wherein one end of the transmission channel amplifier is connected to the transmission channel frequency shifter, the other end of the transmission channel amplifier is connected to the third band pass filter, one end of the reception channel amplifier is connected to the reception channel frequency shifter, and the other end of the reception channel amplifier is connected to the antenna switching device.
10. The device of claim 1, wherein the antenna array layer comprises a substrate and an antenna array disposed on the substrate, and the antenna array is connected to the antenna switch device.
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| CN201910244357.7A CN111835371A (en) | 2019-03-28 | 2019-03-28 | Multichannel WIFI signal transceiver |
| PCT/CN2019/094223 WO2020191943A1 (en) | 2019-03-28 | 2019-07-01 | Multi-channel wi-fi signal transceiver device |
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| CN201910244357.7A CN111835371A (en) | 2019-03-28 | 2019-03-28 | Multichannel WIFI signal transceiver |
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