阅读说明：本技术 一种无线中继装置及控制方法 (Wireless relay device and control method ) 是由 李春雨 张毅 罗铁亮 于 2019-11-19 设计创作，主要内容包括：本发明实施例提供了一种无线中继装置及控制方法,装置包括：若干组定向天线阵列、全双工信号放大电路网络及无线信号监控电路,每组定向天线阵列分别与全双工信号放大电路网络及无线信号监控电路连接,无线信号监控电路连接全双工信号放大电路网络,每组定向天线阵列包括多个定向天线；无线信号监控电路根据检测的MAC地址参数,确定定向天线阵列接收信号强度最大的方向角度,并控制定向天线阵列调整至所述方向角度；全双工信号放大电路网络用于对全双工工作的无线信号进行功率放大并补偿中继损失。通过调节定向天线提高覆盖区域的信号强度,并且实现了无线通信的全双工工作,不占用额外时隙资源,提高了中继性能。(The embodiment of the invention provides a wireless relay device and a control method, wherein the device comprises: the system comprises a plurality of groups of directional antenna arrays, a full-duplex signal amplification circuit network and a wireless signal monitoring circuit, wherein each group of directional antenna arrays is respectively connected with the full-duplex signal amplification circuit network and the wireless signal monitoring circuit; the wireless signal monitoring circuit determines the direction angle with the maximum signal intensity received by the directional antenna array according to the detected MAC address parameters, and controls the directional antenna array to adjust to the direction angle; the full-duplex signal amplification circuit network is used for carrying out power amplification on the wireless signals working in full duplex and compensating relay loss. The signal intensity of a coverage area is improved by adjusting the directional antenna, the full duplex work of wireless communication is realized, additional time slot resources are not occupied, and the relay performance is improved.)

1. A wireless relay apparatus, comprising:

the system comprises a plurality of groups of directional antenna arrays, a full-duplex signal amplification circuit network and a wireless signal monitoring circuit, wherein each group of directional antenna arrays is respectively connected with the full-duplex signal amplification circuit network and the wireless signal monitoring circuit, the wireless signal monitoring circuit is connected with the full-duplex signal amplification circuit network, and each group of directional antenna arrays comprises a plurality of directional antennas;

the wireless signal monitoring circuit determines a direction angle with the maximum signal intensity received by the directional antenna array according to the detected MAC address parameter, and controls the directional antenna array to adjust to the direction angle;

the full-duplex signal amplification circuit network is used for carrying out power amplification on wireless signals working in full duplex and compensating relay loss.

2. The wireless relay device according to claim 1, wherein an isolator is provided between adjacent directional antennas.

3. The wireless repeater device according to claim 1, wherein the directional antenna array further comprises a rotating mechanism, all directional antennas of the directional antenna array are fixed on the rotating mechanism, and the rotating mechanism is connected to the full duplex signal amplifying circuit network and the wireless signal monitoring circuit, respectively.

4. The wireless relay device according to claim 3, wherein the wireless monitoring circuit comprises a wireless monitoring chip and a stepping motor;

the stepping motor is respectively connected with the wireless monitoring chip and the rotating mechanism, and the wireless monitoring chip is connected with the full-duplex signal amplifying circuit network;

the wireless monitoring chip is used for controlling the stepping motor to drive the rotating mechanism to rotate.

5. The wireless relay device of claim 1, wherein said network of full-duplex signal amplification circuits comprises:

a primary duplex signal link and a secondary duplex signal link;

the main duplex signal link and the auxiliary duplex signal link are used for carrying out power amplification on wireless signals of full duplex work and compensating relay loss;

the main duplex signal link is further configured to transmit a signal of a target device to the wireless signal monitoring circuit when the wireless relay apparatus is initialized.

6. The wireless relay device of claim 5, wherein the primary duplex signal link and secondary duplex signal link each comprise: the device comprises a circulator, a signal detection and self-interference suppression circuit and a signal amplification circuit;

the circulator is connected with the signal detection and self-interference suppression circuit, and the signal detection and self-interference suppression circuit is connected with the signal amplification circuit;

the circulator is used for isolating a transmitting signal path and a receiving signal path, the signal detection and self-interference suppression circuit is used for reducing signal leakage of the circulator and monitoring a relay signal, and the signal amplification circuit is used for amplifying power of a wireless signal.

7. The wireless relay device of claim 6, wherein the signal detection and self-interference suppression circuit comprises:

phase shifter, attenuator and two couplers;

the first coupler is connected with the phase shifter, the phase shifter is connected with the attenuator, and the attenuator is connected with the second coupler.

8. The wireless relay apparatus according to claim 7, wherein the signal detection and self-interference suppression circuit in the main duplex signal link is further connected to the wireless signal monitoring circuit, and correspondingly, the signal detection and self-interference suppression circuit in the main duplex signal link further comprises a splitter, the first coupler is connected to the splitter, and the splitter is respectively connected to the phase shifter and the wireless signal monitoring circuit.

9. The wireless relay device according to claim 1, further comprising a charging power source, wherein the charging power source comprises a battery and a charging circuit, the charging circuit is connected to the battery, the battery is respectively connected to the full-duplex signal amplifying circuit network and the wireless signal monitoring circuit, and the wireless signal monitoring circuit disconnects power supply to the wireless signal monitoring circuit after completing the angle adjustment of the directional antenna array.

10. A wireless relay apparatus control method, comprising:

determining a target relay object and acquiring the MAC address of the target relay object;

determining a direction angle with the maximum signal receiving intensity of a directional antenna according to the MAC address of the target relay object, and controlling the directional antenna array to adjust to the direction angle for wireless communication;

full-duplex relay power amplification is provided for the wireless communication based on a full-duplex signal amplification circuit network, and relay loss is compensated.

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a wireless relay device and a control method.

Background

With the popularization of broadband services, the wireless WIFI products are widely used, however, the wireless WIFI products work in 2.4G and 5G frequency bands with higher frequencies, electromagnetic wave signals of the frequency bands have the characteristics of fast attenuation and poor barrier penetrating capability, and in addition, the wireless gateway products are limited by device performance and regulation requirements, the signal coverage range is limited, the performance of the wireless gateway products is seriously reduced in a barrier area, and blind areas easily exist in coverage.

In the current WIFI relay field, all wireless WIFI chips are basically used based on some MIMO (Multiple-Input Multiple-Output) supporting, and an antenna is used to process a received signal at a certain time slot and then use the same group of antennas to re-transmit the signal at other time slots. Wireless WIFI signals need to be processed by a chip, the power consumption of the wireless WIFI signals is high, the wireless WIFI signals need to be arranged near a power supply, and a relay networking is limited by the position of the power supply; because the relay equipment must be fixed at some positions, the antenna of the relay equipment must be an omnidirectional antenna, so that the coverage with a hot spot and a terminal product can be realized at the same time, the coverage cannot be aimed at a signal blind area, and a plurality of relay equipment can be overlapped and have mutual influence. The wireless WIFI signal is transmitted and received in a time-sharing mode, the relay equipment works in a time-sharing mode, certain time slot resources need to be occupied, communication resources allocated to the relayed equipment are greatly reduced, and the actual communication capacity is seriously reduced; and the actual performance is limited by the number of MIMO supported by the relay WIFI chip, and the performance of the high-performance gateway and the terminal cannot be fully exerted.

Therefore, a wireless relay device is needed to solve the above problems.

Disclosure of Invention

In order to solve the above problems, embodiments of the present invention provide a wireless relay apparatus and a control method that overcome or at least partially solve the above problems.

A first aspect of the present invention provides a wireless relay apparatus, including:

the system comprises a plurality of groups of directional antenna arrays, a full-duplex signal amplification circuit network and a wireless signal monitoring circuit, wherein each group of directional antenna arrays is respectively connected with the full-duplex signal amplification circuit network and the wireless signal monitoring circuit, the wireless signal monitoring circuit is connected with the full-duplex signal amplification circuit network, and each group of directional antenna arrays comprises a plurality of directional antennas;

the wireless signal monitoring circuit determines a direction angle with the maximum signal intensity received by the directional antenna array according to the detected MAC address parameter, and controls the directional antenna array to adjust to the direction angle;

the full-duplex signal amplification circuit network is used for carrying out power amplification on wireless signals working in full duplex and compensating relay loss.

Wherein an isolator is disposed between adjacent ones of the directional antennas.

The directional antenna array further comprises a rotating mechanism, all directional antennas of the directional antenna array are fixed on the rotating mechanism, and the rotating mechanism is respectively connected with the full-duplex signal amplifying circuit network and the wireless signal monitoring circuit.

The wireless monitoring circuit comprises a wireless monitoring chip and a stepping motor;

the stepping motor is respectively connected with the wireless monitoring chip and the rotating mechanism, and the wireless monitoring chip is connected with the full-duplex signal amplifying circuit network;

the wireless monitoring chip is used for controlling the stepping motor to drive the rotating mechanism to rotate.

Wherein the full-duplex signal amplification circuit network comprises:

a primary duplex signal link and a secondary duplex signal link;

the main duplex signal link and the auxiliary duplex signal link are used for carrying out power amplification on wireless signals of full duplex work and compensating relay loss;

the main duplex signal link is further configured to transmit a signal of a target device to the wireless signal monitoring circuit when the wireless relay apparatus is initialized.

Wherein the primary and secondary duplex signal links each comprise: the device comprises a circulator, a signal detection and self-interference suppression circuit and a signal amplification circuit;

the circulator is connected with the signal detection and self-interference suppression circuit, and the signal detection and self-interference suppression circuit is connected with the signal amplification circuit;

the circulator is used for isolating a transmitting signal path and a receiving signal path, the signal detection and self-interference suppression circuit is used for reducing signal leakage of the circulator and monitoring a relay signal, and the signal amplification circuit is used for amplifying power of a wireless signal.

Wherein, the signal detection and self-interference suppression circuit includes:

phase shifter, attenuator and two couplers;

the first coupler is connected with the phase shifter, the phase shifter is connected with the attenuator, and the attenuator is connected with the second coupler.

The signal detection and self-interference suppression circuit in the main duplex signal link is further connected to the wireless signal monitoring circuit, and correspondingly, the signal detection and self-interference suppression circuit in the main duplex signal link further includes a splitter, the first coupler is connected to the splitter, and the splitter is respectively connected to the phase shifter and the wireless signal monitoring circuit.

The wireless relay device further comprises a charging power supply, the charging power supply comprises a battery and a charging circuit, the charging circuit is connected with the battery, the battery is respectively connected with the full-duplex signal amplification circuit network and the wireless signal monitoring circuit, and when the wireless signal monitoring circuit completes the angle adjustment of the directional antenna array, the power supply of the wireless signal monitoring circuit is disconnected.

A second aspect of the present invention provides a method for controlling a wireless relay apparatus, including:

determining a target relay object and acquiring the MAC address of the target relay object;

determining a direction angle with the maximum signal receiving intensity of a directional antenna according to the MAC address of the target relay object, and controlling the directional antenna array to adjust to the direction angle for wireless communication;

full-duplex relay power amplification is provided for the wireless communication based on a full-duplex signal amplification circuit network, and relay loss is compensated.

According to the wireless relay device and the control method provided by the embodiment of the invention, the signal intensity of a coverage area can be improved by adjusting the directional antenna, the full duplex work of wireless communication is realized, additional time slot resources are not occupied, and the relay performance is improved.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a wireless relay device according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a directional antenna array structure according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a wireless monitoring circuit according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a main duplex signal link structure according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a sub-duplex signal link structure according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a signal detection and self-interference suppression circuit corresponding to a main duplex signal link according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a signal detection and self-interference suppression circuit corresponding to a sub-duplex signal link according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a rechargeable wireless relay device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a charging power supply according to an embodiment of the present invention;

fig. 10 is a method for controlling a wireless relay apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a schematic structural diagram of a wireless relay device according to an embodiment of the present invention, as shown in fig. 1, including:

the antenna system comprises a plurality of groups of directional antenna arrays 1, a full-duplex signal amplification circuit network 2 and a wireless signal monitoring circuit 3, wherein each group of directional antenna arrays 1 are respectively connected with the full-duplex signal amplification circuit network 2 and the wireless signal monitoring circuit, the wireless signal monitoring circuit 3 is connected with the full-duplex signal amplification circuit network 2, and each group of directional antenna arrays 1 comprises a plurality of directional antennas;

the wireless signal monitoring circuit 3 determines the direction angle with the maximum signal intensity received by the directional antenna array according to the detected MAC address parameter, and controls the directional antenna array 1 to adjust to the direction angle;

the full-duplex signal amplification circuit network 2 is used for performing power amplification on a wireless signal which works in a full-duplex mode and compensating relay loss.

As can be seen from the background, the conventional relay device is usually installed in a fixed manner, and coverage of a hotspot and a terminal product can be achieved only by using an omnidirectional antenna. However, the coverage method cannot be applied to signal blind areas, for example, some areas blocked by obstacles, and the relay device may occupy time slot resources, which affects communication capability.

In view of the defects in the prior art, an embodiment of the present invention provides a new relay device, which can be installed at a position bypassing an obstacle in a scene covered by the obstacle and having a blind area, as shown in fig. 1. The relay device provided by the embodiment of the invention comprises a plurality of groups of directional antenna arrays to realize the receiving and the transmitting of wireless signals, and two groups are needed to realize the functions generally, as shown in fig. 1, but the two groups are only the preferred scheme of the embodiment of the invention, and the specific situation can be set according to the actual situation. It can be understood that the directional antenna array is composed of a plurality of directional antennas, and the omnidirectional antenna adopted in the prior art shows that 360 ° all radiates uniformly on a horizontal directional pattern, and generally, the smaller the lobe width is, the larger the gain is. The directional antenna adopted by the embodiment of the invention radiates in a certain angle range on the horizontal directional diagram, points sharply, and can effectively shield outward-pointing interference signals. Furthermore, the directional antenna can provide antenna gain above 10dBi, which is much higher than that of the omnidirectional antenna, can effectively increase the coverage area, and performs relaying on the target equipment area. In addition, by adopting a mode of multiple groups of directional antenna arrays, the isolation can be higher as long as the directional antennas between different groups are ensured to be separated by a certain distance, because the directional antennas generally have higher gains in certain directions, and the gains at other angles are lower or negative values, so that the isolation between different groups of directional antenna arrays is higher, and the possibility of full-duplex operation of the relay device under the same frequency is provided. The target device in the embodiment of the present invention refers to the MAC addresses of the wireless BEACON (BEACON) and the PROBE (PROBE) detected by the relay device and higher than a certain signal strength, and preferably, the embodiment of the present invention selects the MAC addresses of the wireless gateway and the wireless terminal with the strongest signal as the relay object.

Further, after the relay object is confirmed and the corresponding MAC address is recorded, the direction in which the signal strength received by the directional antenna is the maximum is determined according to the recorded MAC address parameters, and the directional antenna array is adjusted to the direction angle, thereby completing the adjustment of the directional antenna. It should be noted that the process of determining that the target device performs the antenna angle adjustment may be regarded as an initialization process of the relay device, and wireless communication may be performed after the antenna adjustment is completed, and specifically, a directional antenna of the wireless device pointing to one side of the obstacle receives a signal, and the signal is subjected to self-interference suppression and signal amplification processing by the full-duplex signal amplification circuit network and is transmitted by a directional antenna pointing to the other side of the obstacle.

It should be noted that, in the embodiment of the present invention, a full-duplex signal amplification circuit network is used in the wireless signal transmission process. The communication mechanism of the full-duplex signal amplification circuit network is full-duplex communication, namely data is allowed to be transmitted in two directions simultaneously, so that time slot resources are saved, specifically, a circulator can be adopted to separate a received signal from a transmitted signal, and other equipment capable of realizing the full-duplex function can also be suitable for the full-duplex signal amplification circuit network. Further, the full-duplex signal amplification circuit network is also used for realizing power amplification so as to compensate relay loss and increase relay coverage distance. Preferably, the full-duplex signal amplification circuit network focuses on link gain, and is not output transmission power, and considering that after signals are transmitted for a certain distance, the signal strength is weakened, a high-power-consumption radio frequency device such as a Power Amplifier (PA) is not required, and a low-power-consumption amplifier can be used for realizing high gain; therefore, the full-duplex signal amplification circuit network is a device with power consumption and needing to work for a long time, the working voltage is generally below 5V, and most of the full-duplex signal amplification circuit network can work at 3.3V.

According to the wireless relay device provided by the embodiment of the invention, the signal intensity of the coverage area can be improved by adjusting the directional antenna, the full duplex work of wireless communication is realized, additional time slot resources are not occupied, and the relay performance is improved.

On the basis of the above embodiment, an isolator is disposed between adjacent directional antennas.

As can be seen from the above disclosure, the directional antenna array provided in the embodiments of the present invention includes a plurality of antennas, and it can be understood that crosstalk may occur between the plurality of antennas in the directional antenna array, and then preferably, an isolator may be disposed between adjacent directional antennas in the embodiments of the present invention to reduce crosstalk.

Specifically, fig. 2 is a schematic view of a directional antenna array structure provided in an embodiment of the present invention, as shown in fig. 2, the directional antenna array includes a plurality of directional antennas 4, and an isolator 5 is disposed between every two adjacent directional antennas 4. It can be understood that the directional antenna is adopted in the embodiment of the invention, the side lobe of the directional antenna is lower, so that higher isolation can be ensured between the internal parts of the directional array antenna, the front-to-back ratio of the directional antenna is higher, the positions of a plurality of groups of directional antenna arrays can be adjusted to ensure higher isolation, and crosstalk is reduced.

On the basis of the above embodiment, the directional antenna array further includes a rotating mechanism, all the directional antennas of the directional antenna array are fixed on the rotating mechanism, and the rotating mechanism is respectively connected with the full-duplex signal amplifying circuit network and the wireless signal monitoring circuit.

As can be seen from the above description, the directional antenna array provided in the embodiments of the present invention includes a plurality of antennas, and the directional antenna array needs to be controlled by the wireless signal monitoring circuit to adjust the direction angle. In particular, the embodiment of the present invention performs the angle adjustment by means of a rotating mechanism. As shown in fig. 2, the rotating mechanism 6 is connected to the full-duplex signal amplifying circuit network 2 and the wireless signal monitoring circuit 3, and the directional antenna 4 and the isolator 5 are arranged at intervals and fixed on the rotating mechanism 6, so that the wireless signal monitoring circuit 3 drives the rotating mechanism 6 to rotate to position the gateway and the terminal, and then adjusts the direction of the directional antenna array, so that the wireless signal propagates around the obstacle.

On the basis of the above embodiment, the wireless monitoring circuit includes a wireless monitoring chip and a stepping motor;

the stepping motor is respectively connected with the wireless monitoring chip and the rotating mechanism, and the wireless monitoring chip is connected with the full-duplex signal amplifying circuit network;

the wireless monitoring chip is used for controlling the stepping motor to drive the rotating mechanism to rotate.

As can be seen from the content of the foregoing embodiment, the wireless monitoring circuit provided in the embodiment of the present invention is configured to detect an MAC address parameter of a target device, determine a direction angle at which the directional antenna receives the maximum signal strength, and control the directional antenna array 1 to adjust to the direction angle.

Specifically, fig. 3 is a schematic structural diagram of a wireless monitoring circuit according to an embodiment of the present invention, and as shown in fig. 3, the wireless monitoring circuit includes a stepping motor 7 and a wireless monitoring chip 8, where the stepping motor 7 is connected to the wireless monitoring chip 8 and the rotating mechanism 6, respectively, and the wireless monitoring chip 8 is connected to the full-duplex signal amplifying circuit network 2, so that when the relay device is initialized, the wireless monitoring chip 8 can control the stepping motor 7 to drive the rotating mechanism 6 to rotate by 360 degrees. Meanwhile, after receiving the wireless signal transmitted by the full-duplex signal amplification circuit network 2, the wireless monitoring chip 8 can detect the MAC information of the target relay device and record the signal strength parameters corresponding to the angle sum, so that the antenna points to the direction with the maximum signal strength.

On the basis of the above embodiment, the full-duplex signal amplification circuit network includes:

a primary duplex signal link and a secondary duplex signal link;

the main duplex signal link and the auxiliary duplex signal link are used for carrying out power amplification on wireless signals of full duplex work and compensating relay loss;

the main duplex signal link is further configured to transmit a signal of a target device to the wireless signal monitoring circuit when the wireless relay apparatus is initialized.

As can be seen from the content of the foregoing embodiment, the full-duplex signal amplifying circuit network provided in the embodiment of the present invention needs to implement full-duplex operation of a wireless signal and amplify a received signal, and on the other hand, the full-duplex signal amplifying circuit network needs to transmit signals of a target gateway and a terminal to a wireless monitoring circuit in an initialization stage of a relay device. Then, preferably, the embodiment of the present invention divides the full-duplex signal amplification circuit network into a main-duplex signal link and a sub-duplex signal link. The main duplex signal link is used for realizing the full duplex work of the wireless signals and amplifying the received signals, and is also used for transmitting the signals of the target gateway and the terminal to the wireless monitoring circuit in the initialization stage of the relay device. While the secondary duplex signal link is only used to enable full duplex operation of the wireless signal and amplify the received signal. The main duplex signal link is only provided with 1 path, the auxiliary duplex signal link can be provided with a plurality of paths, and the sum of the number of the main duplex signal link and the number of the auxiliary duplex signal links is equal to the number of the directional antennas, so that the MIMO relay function of the wireless WIFI equipment is realized.

On the basis of the above embodiment, the primary duplex signal link and the secondary duplex signal link each include: the device comprises a circulator, a signal detection and self-interference suppression circuit and a signal amplification circuit;

the circulator is connected with the signal detection and self-interference suppression circuit, and the signal detection and self-interference suppression circuit is connected with the signal amplification circuit;

the circulator is used for isolating a transmitting signal path and a receiving signal path, the signal detection and self-interference suppression circuit is used for reducing signal leakage of the circulator and monitoring a relay signal, and the signal amplification circuit is used for amplifying power of a wireless signal.

Fig. 4 is a schematic structural diagram of a main duplex signal link according to an embodiment of the present invention, fig. 5 is a schematic structural diagram of a sub-duplex signal link according to an embodiment of the present invention, and as shown in fig. 4 and fig. 5, the main duplex signal link and the sub-duplex signal link structurally include a circulator, a signal detection and self-interference suppression circuit, and a signal amplification circuit, and in connection relation, the circulator is connected to the signal detection and self-interference suppression circuit, and the signal detection and self-interference suppression circuit is connected to the signal amplification circuit. It will be appreciated that the pair of circulators, signal detection and self-interference suppression circuitry, and signal amplification circuitry is provided because both the transmit and receive signal paths need to be processed. It should be noted that the numbers in fig. 4 and 5 only indicate that the types of the devices are the same, but in actual use, the main duplex signal link and the sub duplex signal link are in a coexistence relationship, and the devices in the coexistence relationship are not in a sharing relationship.

Specifically, in fig. 4, the circulator 9 is used to isolate the transmission signal path b4 (or a4) and the reception signal path a1 (or b1), because of the limitation of the performance of the circulator 9 itself, there is signal leakage of the signal path b4 (or a4) on the signal path a1 (or b1), and in order to reduce this part of leakage and implement monitoring of the relay signal, the embodiment of the present invention uses the signal detection and self-interference suppression circuit 10, so that the self-interference of the signal path a2 (or b2) is reduced, on the one hand, to reduce the requirement of the isolation performance index of the circulator 9, on the other hand, the gain range of the signal amplification circuit 11 is increased, and thus the performance of the entire relay apparatus is improved.

Specifically, in fig. 5, the circulator 9 is used to isolate the transmission signal path bb4 (or aa4) from the signal path aa1 (or bb1), and due to the limitation of the performance of the circulator 9 itself, signal leakage of the signal path bb4 (or aa4) exists on the signal path aa1 (or bb1), and in order to reduce this part of leakage and realize monitoring of the relay signal, the signal detection and self-interference suppression circuit 10 is used, so that the self-interference of the signal path aa2 (or bb2) is reduced, on the one hand, to reduce the requirement of isolation performance index of the circulator 9, on the other hand, the gain range of the signal amplification circuit 11 is increased, thereby improving the performance of the whole relay apparatus.

On the basis of the above embodiment, the signal detection and self-interference suppression circuit includes:

phase shifter, attenuator and two couplers;

the first coupler is connected with the phase shifter, the phase shifter is connected with the attenuator, and the attenuator is connected with the second coupler.

As can be seen from the above description of the embodiments, the embodiments of the present invention provide a signal detection and self-interference suppression circuit, which can reduce leakage of a circulator and implement monitoring of a relay signal.

Specifically, fig. 6 is a schematic structural diagram of a signal detection and self-interference suppression circuit corresponding to a main duplex signal link according to an embodiment of the present invention, and fig. 7 is a schematic structural diagram of a signal detection and self-interference suppression circuit corresponding to a sub-duplex signal link according to an embodiment of the present invention, as shown in fig. 6 and 7, the signal detection and self-interference suppression circuit structure includes a phase shifter 13, an attenuator 14, and two couplers, including a first coupler 12 connected to the phase shifter 13 and a second coupler 15 connected to the attenuator 14. It should be noted that the numbers in fig. 6 and fig. 7 only indicate that the types of the devices are the same, but in actual use, the main duplex signal link corresponding signal detection and self-interference suppression circuit and the sub duplex signal link corresponding signal detection and self-interference suppression circuit are in a concurrent relationship, and the devices therein are also in a coexistence relationship, not in a sharing relationship. As can be seen from comparing fig. 6 and fig. 7, the signal detection and self-interference suppression circuit corresponding to the main duplex signal link has one more splitter 16 than the signal detection and self-interference suppression circuit corresponding to the sub-duplex signal link, because the main duplex signal link needs to transmit the signals of the target gateway and the terminal to the wireless monitoring circuit at the initialization stage of the relay device, the signal splitting function by the splitter 16 can be realized.

Specifically in fig. 6, the signal path b3 (or a3) is coupled to the signal path b5 (or a5) via the first coupler 12 and split into two paths by the splitter 16. Preferably, the splitter used in the embodiment of the present invention is a 3dB splitter, and the specific splitter type can be adjusted according to actual situations. One of the paths is transmitted to the wireless monitoring circuit 3 via the signal path b6 (or a6) for monitoring the wireless signal of the relayed device. The other path passes through the signal path b7 (or a7), the phase shifter 12, the signal path b8 (or a8), the attenuator 13, the signal path b9 (or a9), the second coupler 15, and enters the signal path a2 (or b2), and the part of the signal is in equal amplitude and opposite phase with the signal leaked from the signal path b4 (or a4) to the signal path a1 (or b1) and transmitted to the signal path a2 (or b2) through the second coupler 15, so that self-interference suppression is formed, and the isolation degree of the transceiving process of the relay device is increased.

Specifically, in fig. 7, signal path bb3 (or aa3) is coupled to signal path bb5 (or aa5) through first coupler 12, and enters signal path aa2 (or bb2) through phase shifter 13, signal path bb6 (or aa6), attenuator 14, signal path bb7 (or aa7), and second coupler 15, where the part of the signal is in equal-amplitude anti-phase with the signal leaked to signal path aa1 (or bb1) from signal path bb4 (or aa4) and transmitted to signal path aa2 (or bb2) through second coupler 15, so as to form self-interference suppression, thereby increasing the isolation of the transceiving process of the relay device.

On the basis of the foregoing embodiment, the signal detection and self-interference suppression circuit in the main duplex signal link is further connected to the wireless signal monitoring circuit, and correspondingly, the signal detection and self-interference suppression circuit in the main duplex signal link further includes a splitter, the first coupler is connected to the splitter, and the splitter is respectively connected to the phase shifter and the wireless signal monitoring circuit.

As can be seen from the above description of the embodiments, the main duplex signal link and the sub duplex signal link provided by the embodiments of the present invention are different in function, as can be seen from comparing fig. 4 and 5, and fig. 6 and 7, the difference is that only the main duplex signal link participates in monitoring the wireless signal. Correspondingly, as shown in fig. 4, the signal detection and self-interference suppression circuit in the main duplex signal link is further connected to the wireless signal monitoring circuit, specifically, implemented by a splitter disposed in the signal detection and self-interference suppression circuit in the main duplex signal link.

It should be further noted that, only the main duplex signal link participates in the signal monitoring operation, and the main duplex signal link only needs to support the wireless chip in the siso (single input single output) mode, that is, the BEACON (BEACON) information of the gateway device and the PROBE (PROBE) information of the terminal device can be monitored, so as to adjust the MIMO relay system.

On the basis of the above embodiment, the wireless relay device further includes a charging power supply, the charging power supply includes a battery and a charging circuit, the charging circuit is connected to the battery, the battery is respectively connected to the full-duplex signal amplifying circuit network and the wireless signal monitoring circuit, and when the wireless signal monitoring circuit completes the angle adjustment of the directional antenna array, the power supply of the wireless signal monitoring circuit is disconnected.

It can be understood that, the full-duplex signal amplifying circuit network and the wireless signal monitoring circuit used in the relay device both need to be powered for use, and then the charging power supply is provided for the relay device to supply power according to the embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a rechargeable wireless relay device according to an embodiment of the present invention, and as shown in fig. 8, the relay device further includes a charging power supply 17 in addition to the directional antenna array 1, the full-duplex signal amplifying circuit network 2 and the wireless signal monitoring circuit 3, and the charging power supply 17 is respectively connected to the full-duplex signal amplifying circuit network 2 and the wireless signal monitoring circuit 3.

Fig. 9 is a schematic structural diagram of a charging power supply according to an embodiment of the present invention, and as shown in fig. 9, the charging power supply according to the embodiment of the present invention mainly includes a charging circuit 18 and a battery 19, where the battery 19 is respectively connected to the full-duplex signal amplification circuit network and the wireless signal monitoring circuit, and the specific connection objects are the stepping motor 7, the wireless signal monitoring chip 8, and the signal amplification circuit 11. Therefore, the signal amplifying circuit 11 can be ensured to work continuously for a long time, and the charging circuit 18 can monitor the electric quantity state of the battery 19 and provide charging and warning functions. It should be noted that, in the present invention, the wireless monitoring chip 8 and the stepping motor 7 are provided only in the initialization stage or intermittently in the sleep state, so that the power consumption is reduced and the power load requirement is reduced. Meanwhile, the signal amplification circuit 11 selects an amplifier with a small working current, so that the relay equipment can leave an external power supply to work for a long time, and the characteristic that the relay equipment is placed according to the movement of the environment is realized.

Fig. 10 is a method for controlling a wireless relay apparatus according to an embodiment of the present invention, and as shown in fig. 10, the method includes:

101. determining a target relay object and acquiring the MAC address of the target relay object;

102. determining a direction angle with the maximum signal receiving intensity of a directional antenna according to the MAC address of the target relay object, and controlling the directional antenna array to adjust to the direction angle for wireless communication;

103. full-duplex relay power amplification is provided for the wireless communication based on a full-duplex signal amplification circuit network, and relay loss is compensated.

It should be noted that the implementation of the method for controlling a wireless relay device according to the embodiment of the present invention needs to be supported by the wireless relay device shown in fig. 1.

Specifically, in step 101, the process is actually an initialization process of the wireless relay device, and the process is to power on the relay device first, and after the power is turned on, the main duplex signal link of the full-duplex signal amplification circuit network starts to operate, the directional antenna is fixedly pointed in one direction, and the wireless monitoring chip also enters an initialization state. The directional antenna array of the relay device is respectively close to the wireless gateway and the wireless terminal, the wireless monitoring chip monitors the received MAC addresses of the wireless BEACON (BEACON) and the PROBE (PROBE) which are higher than certain signal intensity, and the wireless gateway and the wireless terminal MAC address with the strongest signal are selected as relay objects.

Further, in step 102, after the target relay object and the corresponding MAC address are determined, the relay device is placed at a position that can bypass the obstacle, and the wireless monitoring chip is triggered to control the step motor to work, so as to drive the directional antenna array to rotate. Because the directional antenna has higher gain only in certain directions, the relay device can monitor that the signal intensity of the wireless equipment with the specified MAC address changes along with the rotation angle, the wireless monitoring chip records the angle with the maximum signal intensity corresponding to each MAC address, the two groups of directional antenna arrays rotate to the recorded angle, and the stepping motor stops working at the same time, so that the relay device finishes initialization.

Finally, in step 103, after the relay device completes initialization, the battery powers up the secondary duplex signal link. The multiple sub-duplex signal links, the main duplex signal link and the directional antenna array are used together to realize the MIMO relay function; preferably, the monitoring chip is caused to enter a sleep state to reduce battery load. In a dormant state, the monitoring chip can be awakened periodically and simultaneously monitors the strength of a signal of a specified MAC address; when the signal intensity change is larger than a set threshold value, the stepping motor is started to adjust the directional antenna array to point to the strongest signal direction, the stepping motor stops working after adjustment is completed, and meanwhile, the monitoring chip enters a dormant state. The operation is repeated, and the good quality of wireless communication is ensured.

According to the control method of the wireless relay device, provided by the embodiment of the invention, the signal intensity of a coverage area can be improved by adjusting the directional antenna, the full duplex work of wireless communication is realized, additional time slot resources are not occupied, and the relay performance is improved.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to each embodiment or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.