阅读说明：本技术 无线信号中继放大装置的自激检测方法及系统 (Self-excitation detection method and system of wireless signal relay amplification device ) 是由 张永升 于 2020-07-23 设计创作，主要内容包括：本发明公开了一种无线信号中继放大装置的自激检测方法及系统。所述无线信号中继放大装置包括接收侧、基带侧以及发射侧,在所述接收侧接收到无线信号时,所述自激检测方法包括：关闭所述发射侧；判断接收侧检测到的无线信号的输入功率与基带侧检测到的所述接收侧向所述发射侧传输的无线信号的输入功率是否相同；若否,则根据基带侧检测到的无线信号判断是否发生自激。本发明基于过程来判断无线信号中继放大装置是否发生自激,能够减少由于接收功率、隔离度的不断变化所导致的无线信号中继放大装置进入自激态的误判,从而无线信号中继放大装置能够在外界环境变化时处在正常的转发态,有利于提高无线信号中继放大装置的质量并提升用户体验。(The invention discloses a self-excitation detection method and a self-excitation detection system for a wireless signal relay amplification device. The wireless signal relay amplifying device comprises a receiving side, a baseband side and a transmitting side, and when the receiving side receives a wireless signal, the self-excitation detection method comprises the following steps: turning off the emitting side; judging whether the input power of the wireless signal detected by a receiving side is the same as the input power of the wireless signal transmitted to the transmitting side from the receiving side detected by a baseband side; if not, judging whether self-excitation occurs according to the wireless signal detected by the baseband side. The invention judges whether the wireless signal relay amplifying device has self-excitation or not based on the process, can reduce the misjudgment that the wireless signal relay amplifying device enters the self-excitation state caused by the continuous change of the receiving power and the isolation, thereby the wireless signal relay amplifying device can be in the normal forwarding state when the external environment changes, and the quality of the wireless signal relay amplifying device is improved and the user experience is improved.)

1. A self-excitation detection method of a wireless signal relay amplifying device, wherein the wireless signal relay amplifying device includes a receiving side, a baseband side, and a transmitting side, and when the receiving side receives a wireless signal, the self-excitation detection method comprises:

turning off the emitting side;

judging whether the input power of the wireless signal detected by a receiving side is the same as the input power of the wireless signal transmitted to the transmitting side from the receiving side detected by a baseband side;

if not, judging whether self-excitation occurs according to the wireless signal detected by the baseband side.

2. A self-excitation detection method of a wireless signal relay amplifying device according to claim 1, wherein said step of judging whether or not self-excitation occurs based on a wireless signal detected on a baseband side comprises:

judging whether the RSSI of the current frame is larger than a first threshold value or not;

if the RSSI of the current frame is larger than the first threshold, judging whether the difference value of the input power of the next frame and the input power of the current frame is larger than a second threshold;

if the difference value is larger than the second threshold value, adding 1 to the self-excitation suspicion times and judging whether the self-excitation suspicion times are larger than a third threshold value, wherein the initial value of the self-excitation suspicion times is 0;

if the self-excitation suspicion times are larger than the third threshold, judging whether the RSSI of the current frame is larger than the first threshold again;

if the self-excitation suspicion times are larger than the third threshold and the RSSI of the current frame is larger than the first threshold, determining that self-excitation occurs and clearing the self-excitation suspicion times;

if the difference value is not larger than the second threshold value, determining that self-excitation does not occur, clearing the self-excitation suspicion times and switching to the step of judging whether the RSSI of the current frame is larger than the first threshold value;

and if the self-excitation suspected times are not larger than the third threshold, switching to the step of judging whether the difference value between the input power of the next frame and the input power of the current frame is larger than a second threshold.

3. A self-excitation detection method of a wireless signal relay amplification apparatus according to claim 2, wherein when the number of self-excitation suspicions is greater than the third threshold and the RSSI of the current frame is not greater than the first threshold, the self-excitation detection method further comprises:

acquiring a first RSSI (received signal strength indicator) when the power amplifier of the receiving side is not closed;

closing the power amplifier at the receiving side;

acquiring a second RSSI when the power amplifier of the receiving side is closed;

judging whether the absolute value of the difference between the second RSSI and the first RSSI is larger than a fourth threshold value;

if so, determining that self-excitation occurs and resetting the self-excitation suspicion times;

if not, determining that self-excitation does not occur, clearing the self-excitation suspicion times and switching to the step of judging whether the RSSI of the current frame is greater than a first threshold value.

4. A self-excitation detection method of a wireless signal relay amplifying device according to claim 1, wherein when it is determined that self-excitation has not occurred, the self-excitation detection method further comprises:

opening the emitting side;

and/or the presence of a gas in the gas,

the receiving side comprises an outdoor antenna, and the transmitting side comprises an indoor antenna;

and/or the presence of a gas in the gas,

the wireless signal relay amplifying device comprises a repeater and/or a micro-chamber.

5. A self-excitation detection system of a wireless signal relay amplifying device, the wireless signal relay amplifying device including a receiving side, a baseband side, and a transmitting side, the self-excitation detection system comprising:

a closing module, configured to close the transmitting side when the receiving side receives a wireless signal;

a first judging module, configured to judge whether an input power of a wireless signal detected by a receiving side is the same as an input power of a wireless signal transmitted to the transmitting side by the receiving side detected by a baseband side after the closing module is called;

if not, a second judgment module is called and used for judging whether self-excitation occurs or not according to the wireless signals detected by the baseband side.

6. A self-excitation detection system of a wireless signal relay amplifying device according to claim 5, wherein said second judging module comprises:

the first judging unit is used for judging whether the RSSI of the current frame is greater than a first threshold value or not;

if the first judging unit judges that the difference value of the input power of the next frame and the input power of the current frame is larger than a second threshold value, calling a second judging unit;

if the second judgment unit judges that the number of times of the self-excitation suspicion is greater than the first threshold, calling a second judgment unit for judging whether the number of times of the self-excitation suspicion is greater than a second threshold, wherein the initial value of the number of times of the self-excitation suspicion is 0;

if the third judging unit judges that the RSSI is greater than the first threshold value, calling a fourth judging unit for judging whether the RSSI of the current frame is greater than the first threshold value again;

if the judgment of the fourth judgment unit is yes, calling a first determination unit for determining the occurrence of self-excitation and clearing the self-excitation suspicion times;

if the second judgment unit judges that the second judgment unit is not the first judgment unit, calling a second determination unit for determining that self-excitation does not occur, clearing the self-excitation suspicion times and calling the first judgment unit;

if the third judging unit judges that the second judging unit is not the first judging unit, the second judging unit is called.

7. A self-excitation detection system of a wireless signal relay amplifying device according to claim 6, wherein the self-excitation detection system further comprises:

a first obtaining unit, configured to obtain, when the fourth determining unit determines that the power amplifier on the receiving side is not turned off, a first RSSI;

the closing unit is used for closing the power amplifier at the receiving side after the first obtaining unit is called;

a second obtaining unit, configured to obtain a second RSSI when the power amplifier of the receiving side is turned off;

a fifth determination unit configured to determine whether an absolute value of a difference between the second RSSI and the first RSSI is greater than a fourth threshold;

if yes, calling the first determining unit;

if not, the second determination unit is called.

8. A self-excitation detection system of a wireless signal relay amplifying device according to claim 5, wherein the self-excitation detection system further comprises:

the opening module is used for opening the transmitting side when the self-excitation is determined not to occur;

and/or the presence of a gas in the gas,

the receiving side comprises an outdoor antenna, and the transmitting side comprises an indoor antenna;

and/or the presence of a gas in the gas,

the wireless signal relay amplifying device comprises a repeater and/or a micro-chamber.

9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the self-excitation detection method of the wireless signal relay amplifying device according to any one of claims 1 to 4 when executing the computer program.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the self-excitation detection method of a wireless signal relay amplifying device according to any one of claims 1 to 4.

Technical Field

The invention relates to the technical field of wireless communication, in particular to a self-excitation detection method and a self-excitation detection system for a wireless signal relay amplification device.

Background

The wireless Signal relay amplifying device such as the wireless repeater has the function of amplifying and then transmitting the Received wireless Signal, in the actual working process, a part of the transmitted Signal can be fed back to the receiving side of the wireless Signal relay amplifying device and amplified again, so that positive feedback is formed, the RSSI (Received Signal Strength) Control word calibrated by AGC (Automatic Gain Control) at the receiving side is continuously increased until saturation, and the Gain is greater than the isolation degree, so that self-excitation is generated.

In the actual working process of wireless signal relay amplifying devices such as wireless repeater stations, the receiving power and the isolation degree can be changed continuously due to the external complex environment change, and self-excitation is easy to generate. For example, in the special environment of the elevator car, when the elevator runs to a high floor, the signal is good, and when the elevator runs to a low floor, the signal is weakened, so that the elevator is easy to judge to enter a self-excited state; in addition, the opening and closing of the elevator car door can cause large isolation degree change, and the self-excited state can be easily judged.

The reason why the wireless signal relay amplifying device such as a wireless repeater is abnormal when entering the self-excited state is frequently judged, and the reason why the wireless signal relay amplifying device enters the self-excited state is mainly that the existing technology judges whether to enter the self-excited state only according to the comparison result of the received signal power and the signal power detected by the baseband side, specifically, if the received signal power is consistent with the signal power detected by the baseband side, the self-excited state is not entered, and if the received signal power is inconsistent with the signal power detected by the baseband side, the self-excited state is entered, and the self-excitation in the process is not judged.

Disclosure of Invention

The invention provides a self-excitation detection method and a self-excitation detection system for a wireless signal relay amplifying device, aiming at overcoming the defect that whether the self-excitation state is entered or not is judged only according to the comparison result of received signal power and signal power detected by a baseband side in the prior art.

The invention solves the technical problems through the following technical scheme:

a self-excitation detection method of a wireless signal relay amplifying apparatus including a receiving side, a baseband side, and a transmitting side, the self-excitation detection method comprising, when the receiving side receives a wireless signal:

turning off the emitting side;

judging whether the input power of the wireless signal detected by a receiving side is the same as the input power of the wireless signal transmitted to the transmitting side from the receiving side detected by a baseband side;

if not, judging whether self-excitation occurs according to the wireless signal detected by the baseband side.

Preferably, the step of determining whether self-excitation occurs according to the wireless signal detected by the baseband side includes:

judging whether the RSSI of the current frame is larger than a first threshold value or not;

if the RSSI of the current frame is larger than the first threshold, judging whether the difference value of the input power of the next frame and the input power of the current frame is larger than a second threshold;

if the difference value is larger than the second threshold value, adding 1 to the self-excitation suspicion times and judging whether the self-excitation suspicion times are larger than a third threshold value, wherein the initial value of the self-excitation suspicion times is 0;

if the self-excitation suspicion times are larger than the third threshold, judging whether the RSSI of the current frame is larger than the first threshold again;

if the self-excitation suspicion times are larger than the third threshold and the RSSI of the current frame is larger than the first threshold, determining that self-excitation occurs and clearing the self-excitation suspicion times;

if the difference value is not larger than the second threshold value, determining that self-excitation does not occur, clearing the self-excitation suspicion times and switching to the step of judging whether the RSSI of the current frame is larger than the first threshold value;

and if the self-excitation suspected times are not larger than the third threshold, switching to the step of judging whether the difference value between the input power of the next frame and the input power of the current frame is larger than a second threshold.

Preferably, when the number of self-excitation suspicion times is greater than the third threshold and the RSSI of the current frame is not greater than the first threshold, the self-excitation detection method further includes:

acquiring a first RSSI (received signal strength indicator) when the power amplifier of the receiving side is not closed;

closing the power amplifier at the receiving side;

acquiring a second RSSI when the power amplifier of the receiving side is closed;

judging whether the absolute value of the difference between the second RSSI and the first RSSI is larger than a fourth threshold value;

if so, determining that self-excitation occurs and resetting the self-excitation suspicion times;

if not, determining that self-excitation does not occur, clearing the self-excitation suspicion times and switching to the step of judging whether the RSSI of the current frame is greater than a first threshold value.

Preferably, when it is determined that the self-excitation does not occur, the self-excitation detection method further includes:

opening the emitting side;

and/or the presence of a gas in the gas,

the receiving side comprises an outdoor antenna, and the transmitting side comprises an indoor antenna;

and/or the presence of a gas in the gas,

the wireless signal relay amplifying device comprises a repeater and/or a micro-chamber.

A self-excitation detection system of a wireless signal relay amplifying device including a receiving side, a baseband side, and a transmitting side, the self-excitation detection system comprising:

a closing module, configured to close the transmitting side when the receiving side receives a wireless signal;

a first judging module, configured to judge whether an input power of a wireless signal detected by a receiving side is the same as an input power of a wireless signal transmitted to the transmitting side by the receiving side detected by a baseband side after the closing module is called;

if not, a second judgment module is called and used for judging whether self-excitation occurs or not according to the wireless signals detected by the baseband side.

Preferably, the second determining module includes:

the first judging unit is used for judging whether the RSSI of the current frame is greater than a first threshold value or not;

if the first judging unit judges that the difference value of the input power of the next frame and the input power of the current frame is larger than a second threshold value, calling a second judging unit;

if the second judgment unit judges that the number of times of the self-excitation suspicion is greater than the first threshold, calling a second judgment unit for judging whether the number of times of the self-excitation suspicion is greater than a second threshold, wherein the initial value of the number of times of the self-excitation suspicion is 0;

if the third judging unit judges that the RSSI is greater than the first threshold value, calling a fourth judging unit for judging whether the RSSI of the current frame is greater than the first threshold value again;

if the judgment of the fourth judgment unit is yes, calling a first determination unit for determining the occurrence of self-excitation and clearing the self-excitation suspicion times;

if the second judgment unit judges that the second judgment unit is not the first judgment unit, calling a second determination unit for determining that self-excitation does not occur, clearing the self-excitation suspicion times and calling the first judgment unit;

if the third judging unit judges that the second judging unit is not the first judging unit, the second judging unit is called.

Preferably, the self-excitation detection system further includes:

a first obtaining unit, configured to obtain, when the fourth determining unit determines that the power amplifier on the receiving side is not turned off, a first RSSI;

the closing unit is used for closing the power amplifier at the receiving side after the first obtaining unit is called;

a second obtaining unit, configured to obtain a second RSSI when the power amplifier of the receiving side is turned off;

a fifth determination unit configured to determine whether an absolute value of a difference between the second RSSI and the first RSSI is greater than a fourth threshold;

if yes, calling the first determining unit;

if not, the second determination unit is called.

Preferably, the self-excitation detection system further includes:

the opening module is used for opening the transmitting side when the self-excitation is determined not to occur;

and/or the presence of a gas in the gas,

the receiving side comprises an outdoor antenna, and the transmitting side comprises an indoor antenna;

and/or the presence of a gas in the gas,

the wireless signal relay amplifying device comprises a repeater and/or a micro-chamber.

An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a self-excitation detection method for a wireless signal relay amplifying device of any of the above when executing the computer program.

A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of any of the self-excitation detection methods of a wireless signal relay amplifying device described above.

The positive progress effects of the invention are as follows: the invention judges whether the wireless signal relay amplifying device has self-excitation or not based on the process, can reduce the misjudgment that the wireless signal relay amplifying device enters the self-excitation state caused by the continuous change of the receiving power and the isolation, thereby the wireless signal relay amplifying device can be in the normal forwarding state when the external environment changes, and the quality of the wireless signal relay amplifying device is improved and the user experience is improved.

Drawings

Fig. 1 is a schematic diagram of a wireless signal relay amplifying apparatus in a self-excitation detection method of the wireless signal relay amplifying apparatus according to embodiment 1 of the present invention.

Fig. 2 is a flowchart of a self-excitation detection method of a wireless signal relay amplifying device according to embodiment 1 of the present invention.

Fig. 3 is a flowchart of step S14 in the self-excitation detection method of the wireless signal relay amplifying device according to embodiment 1 of the present invention.

Fig. 4 is a block diagram of a self-excitation detection system of a wireless signal relay amplifying device according to embodiment 2 of the present invention.

Fig. 5 is a schematic structural diagram of an electronic device according to embodiment 3 of the present invention.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.