CN214675198U

CN214675198U - Multi-frequency-band wireless expander and WIFI communication system

Info

Publication number: CN214675198U
Application number: CN202121173579.3U
Authority: CN
Inventors: 余锦泽; 薛明岳
Original assignee: Zhuhai Huge Ic Co ltd
Current assignee: Zhuhai Huge Ic Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-11-09
Anticipated expiration: 2031-05-28

Abstract

The embodiment of the application discloses a multi-band wireless expander and a WIFI communication system, and relates to the field of wireless communication. The multiband wireless extender includes: the router comprises a first antenna, a router chip, an 802.11ah communication unit and a second antenna; the first antenna is connected with the router chip, the router chip is connected with the 802.11ah communication unit, and the second antenna is connected with the 802.11ah communication unit; the router chip receives a first WiFi signal from the STA through a first antenna, demodulates the first WiFi signal to obtain uplink data, and sends the uplink data to the 802.11ah communication unit; the 802.11ah communication unit adjusts the data to obtain a second WiFi signal, and the second WiFi signal is sent through a second antenna; the frequency band of the first WiFi signal is 2.4GHz or 5GHz, and the frequency band of the second WiFi signal is an 802.11ah frequency band. The multi-band wireless expander enables the AP to communicate with the short-distance STA by using a frequency band of 2.4GHz or 5GHz, and communicates with the long-distance STA by using an 802.11ah frequency band, so that the coverage area of the AP and the compatibility of the STA are improved.

Description

Multi-frequency-band wireless expander and WIFI communication system

Technical Field

The utility model relates to a wireless communication field especially relates to a multifrequency section wireless extender and WIFI communication system.

Background

Wireless Fidelity (Wireless Fidelity) technology is a technology that allows electronic devices to access Wireless local area networks. In the related art, an AP (access point) generally uses 2.4G UHF (Ultra High Frequency) and 5G SHF (Super High Frequency) in an ISM (Industrial Scientific Medical) radio Frequency band as an operating Frequency band, and an STA (station) supports 2.4GHz and 5GHz, and can implement an internet access function after being connected to the AP. Due to the fact that the frequency of radio frequency signals of 2.4GHz and 5GHz is high, attenuation is fast in the transmission process, the communication distance of WiFi signals is short, and the coverage range of an AP is small.

SUMMERY OF THE UTILITY MODEL

The multi-band wireless expander and the electronic equipment provided by the embodiment of the application can solve the problem that the coverage range of the frequency bands of 2.4GHz and 5GHz used by the AP in the related technology is small. The technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a multiband wireless extender, including:

the router comprises a first antenna, a router chip, an 802.11ah communication unit and a second antenna;

the first antenna is connected with the router chip, the router chip is connected with the 802.11ah communication unit, and the second antenna is connected with the 802.11ah communication unit;

the router chip receives a first WiFi signal from STA through the first antenna, demodulates the first WiFi signal to obtain uplink data, and sends the uplink data to the 802.11ah communication unit; the 802.11ah communication unit adjusts the data to obtain a second WiFi signal, and the second WiFi signal is sent through the second antenna; the frequency band of the first WiFi signal is 2.4GHz or 5GHz, and the frequency band of the second WiFi signal is an 802.11ah frequency band;

the 802.11ah communication unit receives a third WiFi signal from the AP through the second antenna, demodulates the first WiFi signal to obtain downlink data, and sends the downlink data to the router chip; the router chip modulates the data into a fourth WiFi signal and transmits the fourth WiFi signal through the first antenna; the frequency band of the third WiFi signal is an 802.11ah frequency band, and the frequency band of the fourth WiFi signal is 2.4GHz or 5 GHz.

In a second aspect, an embodiment of the present application provides a WIFI communication system, including: at least one STA, the multi-band wireless expander and the AP; the AP comprises: the router comprises a third antenna, a router chip, an 802.11ah communication unit and a fourth antenna, wherein the third antenna is connected with the router chip, the router chip is connected with the 802.11ah communication unit, and the 802.11 communication unit is connected with the fourth antenna. The multiband wireless expander can be a portable device or a fixed device.

The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:

the multi-band wireless expander is provided with an 802.11ah communication unit and a traditional router chip, the multi-band wireless expander and the AP are communicated by using an 802.11ah frequency band, the 802.11ah frequency band is smaller, so that WIFI signals transmitted by the AP have the characteristics of attenuation and long transmission distance, the AP has a larger coverage range, the multi-band wireless expander converts the WIFI signals transmitted by the AP at the 802.11ah frequency band into 2.4GHz or 5GHz WIFI signals, so that old STAs can be connected to the AP based on a 2.4GHz or 5GHz protocol, and the support and compatibility of the AP on the old STAs are enhanced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a block diagram of a multiband wireless extender provided in an embodiment of the present invention;

fig. 2 is a block diagram of an 802.11ah communication unit according to an embodiment of the present invention;

fig. 3 is a block diagram of a WIFI communication system provided by the present invention;

fig. 4 is a block diagram of the AP provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a block diagram of a multiband wireless extender according to an embodiment, the multiband wireless extender 1 includes: a first antenna 10, a router chip 11, an 802.11ah communication unit 12 and a second antenna 13. Optionally, the multiband wireless extender further comprises a power management unit 15, and the power management chip 15 is used for supplying power to the router chip 11 and the 802.11ah chip.

The first antenna 10 is connected to the router chip 11, the router chip 11 is connected to the 802.11ah communication unit 12, the 802.11ah communication unit 12 is connected to the second antenna 13, and the power management chip 15 is connected to the router chip 11 and the 802.11ah communication unit 12 respectively. The router chip 11 supports either the 2.4GHz band or the 5GHz band. The 802.11ah communication unit 12 of the present application supports 802.11ah frequency bands, the 802.11ah frequency bands correspond to different frequency ranges in different countries and regions, the 802.11ah communication unit 12 of the present application can be compatible with 802.11ah frequency bands of a plurality of countries and regions, for example, the frequency range of korea is 917.5 MHz-923.5 MHz, the frequency range of europe is 863 MHz-868 MHz, the frequency range of china is 755 MHz-787 MHz, the frequency range of japan is 916.5 MHz-927.5 MHz, the 802.11ah protocol is one of 802.11 protocol families, and the present application is applicable to wireless local area network scenarios. The router chip 11 and the 802.11ah communication unit 12 are connected by wire, for example: the router chip 11 and the 802.11ah communication unit communicate with each other through a USB (Universal Serial Bus) interface or an SDIO (Secure Digital Input and Output) interface. The router chip 11 is used for receiving and transmitting 2.4GHz or 5GHz WIFI signals, and the 802.11ah communication unit 12 is used for receiving and transmitting 802.11ah frequency band WIFI signals.

In this embodiment, when the STA establishes the WIFI connection with the AP through the wireless extender, the data transmission process of the multiband wireless extender includes uplink data transmission and downlink data transmission. In the uplink data transmission process, the router chip 11 receives a first WIFI signal from the STA through the first antenna 10, where the frequency band of the first WIFI signal is 2.4GHz or 5GHz, that is, the STA and the multiband wireless extender of this embodiment communicate with each other using the frequency band of 2.4GHz or 5 GHz. The router chip 11 demodulates the received first WIFI signal to obtain first data, where the first data may be service data or control data, the router chip 11 sends the first data to the 802.11ah communication unit 12, the 802.11ah communication unit 12 modulates the first data to obtain a second WIFI signal of an 802.11 frequency band, and then sends the second WIFI signal to the AP through the second antenna 13, that is, the multiband wireless extender and the AP communicate with each other using the 802.11 frequency band.

In the downlink data transmission process, the 802.11ah communication unit 12 receives a third WIFI signal from the AP through the second antenna 13, the frequency band of the third WIFI signal is an 802.11ah frequency band, the 802.11ah communication unit 12 demodulates the third WIFI signal to obtain second data, the second data may be service data or control data, the 802.11ah communication unit 12 sends the second data to the router chip 11, the router chip 11 modulates the second data to obtain a fourth WIFI signal, and then sends the fourth WIFI signal to the STA through the first antenna 10.

In the embodiment of the application, the multi-band wireless extender and the AP communicate with each other by using the 802.11ah frequency band, the 802.11ah frequency band is smaller, so that WIFI signals transmitted by the AP have the characteristics of attenuation and long transmission distance, the AP has a larger coverage range, and the multi-band wireless extender converts the WIFI signals transmitted by the AP at the 802.11ah frequency band into 2.4GHz or 5GHz WIFI signals, so that old STAs can be connected to the AP based on a 2.4GHz or 5GHz protocol, and the support and compatibility of the AP on the old STAs are enhanced.

In one or more embodiments of the present application, the router chip is model MT7662T, and is configured to support WIFI communication protocols of 2.4GHz and 5 GHz.

In one or more embodiments of the present application, referring to fig. 2, the 802.11AH communication unit is a TX-AH-RX00P manufactured by tai-co, and includes a TXW83xx chip inside, which supports processing of WIFI signals in the 802.11AH band. The 802.11ah communication unit includes: the circuit comprises a switch circuit, a power amplifier, a crystal oscillator, a radio frequency circuit, a phase-locked loop, a low dropout regulator, a processor, a memory, a timer, a DMA (Direct memory access) module and a watchdog.

The switch circuit is connected with the second antenna, and the switch circuit is connected with the radio frequency circuit through the power amplifier and is connected with the radio frequency circuit; the radio frequency circuit is connected with the phase-locked loop and the low dropout regulator, and the processor, the memory, the timer, the DMA module and the watchdog are connected through a BUS (BUS).

The switch circuit is used for switching a transmitting path and a receiving path, the power amplifier is used for amplifying a transmitted radio frequency signal, the power amplifier is arranged in the transmitting path, and the radio frequency circuit is used for generating a radio frequency signal and processing the received radio frequency signal. The crystal oscillator is used for providing a clock signal, and the low dropout regulator plays a role in stabilizing voltage.

Further, the radio frequency circuit includes a pi-type antenna matching circuit for matching an antenna impedance of the second antenna to maximize a gain of the second antenna.

Furthermore, the processor and the radio frequency circuit supply power respectively, when the multi-band wireless expander is in a dormant state, the power management unit 14 only supplies power to the processor, and the radio frequency circuit is in a power-off state, so that the power consumption of the whole equipment can be saved; in the normal state of the multiband wireless extender, the power management unit 14 supplies power to the processor and the radio frequency circuit at the same time.

Furthermore, the number of the first antenna and the second antenna is multiple, the multi-band wireless extender can communicate with the STA or the AP in an MIMO mode, and the data transmission rate and the throughput rate are improved.

Referring to fig. 3, for a schematic structural diagram of a WIFI communication system provided in an embodiment of the present application, the WIFI communication system of the present application includes: AP2, STA2, multiband wireless extender 1, and STA 5. Optionally, the WIFI communication system further includes n relay amplifiers, where n is an integer greater than or equal to 1, that is, the number of the relay amplifiers is one or more, and each relay amplifier may be continuously or separately set; each relay amplifier may be located between a STA and a multiband wireless extender, or an AP. As shown in fig. 3, n relay amplifiers are continuously distributed between the multiband wireless extender 1 and the AP 3.

The distance between the STA4 and the AP3 is short, and the STA4 and the AP3 can directly communicate based on a 2.4GHz or 5GHz frequency band. The distance between the STA5 and the AP3 is relatively long, and a multi-band expander and a relay amplifier are arranged between the STA5 and the AP 3. In the downlink direction, the relay amplifier relays and amplifies the WIFI signal of the 802.11ah frequency band from the AP, and sends the WIFI signal to the multi-band wireless expander 1, the multi-band wireless expander 1 performs frequency conversion on the received WIFI signal to obtain a WIFI signal of 2.4GHz or 5GHz, and then the converted WIFI signal is sent to the STA 5. In the uplink direction, the multiband wireless extender 1 performs frequency conversion on 2.4GHz or 5GHz WIFI signals from the STA5 to obtain WIFI signals of 802.11ah frequency points, sends the converted WIFI signals to n relay amplifiers for relay amplification in sequence, then sends the relay-amplified WIFI signals to the AP3, the AP3 supports the 802.11ah frequency points, demodulates the received WIFI signals to obtain data, and sends the data to the internet. According to the application, the relay amplifier is introduced, and the transmission of the WIFI signal at a longer distance can be realized by matching with the 802.11ah frequency point, so that the coverage of the AP is further improved.

Further, referring to fig. 4, the AP3 includes: a third antenna 30, a router chip 31, an 802.11ah communication unit 33, a fourth antenna 32, and a power management chip 34. The structures and models of the router chip 31 and the 802.11ah communication unit can be referred to the descriptions of fig. 1 and fig. 2, and are not described herein again.

Wherein, the third antenna 30 is connected to the router chip 31, and the router chip 31 is connected to the 802.11ah communication unit 33, for example: the router chip 31 and the 802.11ah communication unit 33 are connected via an SDIO interface or a USB interface. The power management chip 34 is used to power the router chip 31 and the 802.11ah communication unit. Further, the AP further includes an RJ45 network port, a USB interface, and a PCIE interface, and the interfaces are connected to the router chip 31.

The working principle of the AP3 is as follows: in the downlink direction, the router chip 31 receives downlink data from the internet through the RJ45 port 35, adjusts the downlink data to obtain a WIFI signal of 2.4GHz or 5GHz, and transmits the WIFI signal of 2.4GHz or 5GHz through the third antenna 20, or the router chip 31 sends the downlink data to the 802.11ah communication unit 33, the 802.11ah communication unit 33 modulates the downlink data to obtain a WIFI signal of 80.211ah frequency band, and transmits the WIFI signal through the fourth antenna.

In the uplink direction, the AP3 receives the WIFI signal of the 802.11ah frequency band through the fourth antenna 32, demodulates the WIFI signal into downlink data, and sends the downlink data to the router chip 31, and the router chip 31 forwards the downlink data to the internet through the RJ45 port; or, the AP3 receives the 2.4GHz or 5GHz WIFI signal through the third antenna 30, demodulates the WIFI signal into downlink data, and forwards the downlink data to the internet through the RJ45 network interface by the router chip 31.

The AP of this embodiment implements near field communication and STA compatibility through a router chip having an operating frequency of 2.4GHz or 5GHz, implements long field communication through an 802.11ah communication unit having an operating frequency less than 1GHz, and implements long field transmission, wide coverage, and compatibility with an old mobile terminal.

The embodiment of the present application further provides a multi-frequency expander, which may further include, in addition to the above components: a casing for accommodating the multi-band wireless expander, a display screen, an input device (such as a keyboard, a mouse or a touch screen), and the like.

The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.

Claims

1. A multi-band wireless extender, comprising: the method comprises the following steps: the router comprises a first antenna, a router chip, an 802.11ah communication unit and a second antenna;

2. The multiband wireless extender of claim 1, wherein communication between the 802.11ah communication unit and the router chip is via a USB port or SDIO port.

3. The multiband wireless extender of claim 1 or 2, wherein the router chip is of the type MT 7662T.

4. The multiband wireless extender of claim 1 or 2, wherein the 802.11ah communication unit comprises a switching circuit, a power amplifier, a crystal oscillator, a radio frequency circuit, a phase locked loop, a low dropout linear regulator, a processor, a memory, a timer, a DMA module, a watchdog;

the switch circuit is connected with the second antenna, and the switch circuit is connected with the radio frequency circuit through the power amplifier and is connected with the radio frequency circuit; the radio frequency circuit is connected with the phase-locked loop and the low dropout regulator, and the processor, the memory, the timer, the DMA module and the watchdog are connected through a bus.

5. The multiband wireless extender of claim 4, wherein said radio frequency circuitry comprises a pi-type antenna matching circuit.

6. The multiband wireless extender of claim 4, wherein said processor and said radio frequency circuitry are powered separately.

7. The multiband wireless extender of claim 5 or 6, wherein the number of said first antenna and said second antenna is plural.

8. A WIFI communication system, comprising: at least one STA, a multiband wireless extender according to any one of claims 1 to 7, and an AP; the AP comprises: the router comprises a third antenna, a router chip, an 802.11ah communication unit and a fourth antenna, wherein the third antenna is connected with the router chip, the router chip is connected with the 802.11ah communication unit, and the 802.11 communication unit is connected with the fourth antenna.

9. The system of claim 8, further comprising: the relay amplifier is used for carrying out relay amplification on the WIFI signal.

10. The system of claim 8 or 9, wherein the AP further comprises an RJ45 network port, a USB interface, and a PCIE interface, and the interfaces are connected to a router chip in the AP.