Method for controlling transmission power of digital infrared conference unit, communication device, and medium

Abstract

Disclosed in embodiments of the present invention are a method for controlling the transmission power of a digital infrared conference unit, a communication device, and a medium. The method comprises: at least one infrared conference unit sends a first uplink signal to an infrared conference host at a first transmission power; the infrared conference host acquires first signal strength of the first uplink signal from the at least one infrared conference unit, and sends to the at least one infrared conference unit a first downlink signal comprising first control data; and each infrared conference unit determines a second transmission power on the basis of the first control data, and sends a second uplink signal to the infrared conference host at the second transmission power, such that the signal strength of the signals received by the infrared conference host from each infrared conference unit is the same.

Description

Transmission power control method, communication device and medium of digital infrared conference unit Technical Field

[0001] The present invention relates to the field of digital infrared conference systems, and in particular to a transmission power control method, a communication device and a medium of a digital infrared conference unit. Background Art

[0002] An infrared conferencing host transmits downlink infrared signals through an infrared transceiver and receives uplink infrared signals from multiple infrared units. Infrared conferencing units transmit uplink infrared signals using different carrier frequencies. Because the distances between the infrared conferencing units and the infrared transceivers vary, even if the infrared conferencing units transmit the uplink infrared signals at the same transmit power, the amplitudes of the infrared uplink signals received by the infrared transceiver will differ. The uplink infrared signals from infrared conferencing units closer to the transceiver have excessively large amplitudes, which are prone to nonlinear distortion after passing through the amplifier, generating numerous harmonic signals and interfering with the uplink infrared signals from other infrared units. Furthermore, the uplink infrared signals from infrared units farther away have low amplitudes after quantization using the analog-to-digital converter (ADC), resulting in insufficient quantization accuracy and affecting demodulation of the infrared digital signal. Therefore, solving the problem of transmitting uplink infrared signals from infrared conferencing units is a pressing technical challenge.

[0003] Summary of the Invention

[0004] The embodiments of the present invention provide a transmission power control method, a communication device and a medium for a digital infrared conference unit, which can automatically adjust the transmission power of the infrared conference unit so that the signal strength received by the infrared conference host from different infrared conference units is the same.

[0005] In a first aspect, an embodiment of the present invention provides a method for controlling the transmission power of a digital infrared conferencing unit, comprising:

[0006] receiving, from at least one infrared conference unit among the plurality of conference units, a first uplink signal of each infrared conference unit of the at least one infrared conference unit, wherein the first uplink signal of each infrared conference unit is sent by each infrared conference unit at a first transmission power corresponding to each infrared conference unit;

[0007] Obtaining a first signal strength of a first uplink signal of each infrared conferencing unit;

[0008] Determining first control data corresponding to each infrared conference unit according to the first signal strength of each infrared conference unit and the preset signal strength, wherein the first control data corresponding to each infrared conference unit is used to determine the next transmission power of each infrared conference unit;

[0009] Sending a first downlink signal to the at least one infrared conferencing unit, wherein the first downlink signal includes first control data of each infrared conferencing unit;

[0010] A second uplink signal of each infrared conference unit is received from each infrared conference unit, wherein the second signal strength of the second uplink signal of each infrared conference unit is the preset signal strength, and the second uplink signal is sent by each infrared conference unit at a second transmission power, and the second transmission power is determined by each infrared conference unit according to the first control data of each infrared conference unit.

[0011] In a second aspect, an embodiment of the present invention provides an infrared conference host, comprising: a transceiver unit and a processing unit;

[0012] a transceiver unit, configured to receive a first uplink signal from at least one infrared conference unit among the plurality of conference units;

[0013] Obtaining a first signal strength of a first uplink signal of each infrared conferencing unit;

[0014] a processing unit, configured to determine first control data corresponding to each infrared conferencing unit according to the first signal strength of each infrared conferencing unit and a preset signal strength;

[0015] a transceiver unit, configured to send a first downlink signal to the at least one infrared conferencing unit;

[0016] A second uplink signal of each infrared conference unit is received from each infrared conference unit.

[0017] In a third aspect, an embodiment of the present invention provides an infrared conference unit, comprising: a transceiver unit and a processing unit;

[0018] a transceiver unit, configured to send a first uplink signal to the infrared conference host at a first transmission power;

[0019] receiving a first downlink signal corresponding to the first uplink signal from the infrared conference host;

[0020] Acquire first control data corresponding to the first infrared conference unit from the first downlink signal;

[0021] a processing unit, configured to determine a second transmission power of each infrared conference unit according to the first control data corresponding to each infrared conference unit;

[0022] a transceiver unit, configured to determine a second transmission power of the first infrared conferencing unit according to first control data corresponding to the first infrared conferencing unit;

[0023] The second uplink signal is sent to the infrared conference host at the second transmission power, so that the second signal strength of the second uplink signal of the first infrared conference unit received by the infrared conference host is the preset signal strength.

[0024] In a fourth aspect, an embodiment of the present application provides a communication device, comprising: a processor and a memory, the processor being connected to the memory, the memory being used to store computer programs, and the processor being used to execute the computer programs stored in the memory, so that the communication device performs the method of the first aspect.

[0025] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a computer to execute the method of the first aspect.

[0026] The implementation of the embodiments of the present application has the following beneficial effects:

[0027] It can be seen that in the embodiment of the present application, the infrared conference host can determine the first signal strength of the first uplink signal by the first uplink signal received from each infrared conference unit, and determine the control data corresponding to each infrared conference unit based on the first signal strength and the preset signal strength of each infrared conference unit. Each infrared conference unit can determine the second transmission power through the control data corresponding to each infrared conference unit, and determine the second uplink signal based on the second transmission power of each infrared conference unit, thereby ensuring that the signal strength received by the infrared conference host from each infrared conference unit is the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings required for use in the embodiments of the present invention or the background technology will be described below.

[0029] FIG1a is a schematic diagram of an infrared conferencing system provided in an embodiment of the present application;

[0030] FIG1b is a schematic diagram showing the principle of an infrared conferencing system provided in an embodiment of the present application;

[0031] FIG2a is a flow chart of a method for controlling transmission power of a digital infrared conferencing unit according to an embodiment of the present application;

[0032] FIG2b is a schematic diagram of a first signal strength provided in an embodiment of the present application;

[0033] FIG2c is a schematic diagram of a second signal strength provided in an embodiment of the present application;

[0034] FIG3 is a schematic diagram of an infrared conference host provided in an embodiment of the present application;

[0035] FIG4 is a schematic diagram of an infrared conference unit provided in an embodiment of the present application;

[0036] FIG5 is a schematic diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] The terms "first," "second," "third," and "fourth," etc., in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, rather than to describe a specific order. In addition, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0039] References herein to "embodiments" mean that a particular feature, result, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] Refer to Figure 1a, which is a schematic diagram of an infrared conferencing system provided by an embodiment of the present application. The infrared conferencing system includes an infrared conferencing host 100, an infrared transceiver 101, infrared conferencing units 200, infrared conferencing units 201, ..., infrared conferencing units 20n, wherein the infrared conferencing units 200, infrared conferencing units 201, ..., infrared conferencing units 20n communicate with the infrared conferencing host 100 at different frequencies. This application mainly uses the infrared conferencing unit 200 as an example for description. As shown in Figure 1a, the infrared transceiver 101 is external. Of course, in actual applications, the infrared transceiver 101 can also be internal, and this application does not limit this.

[0041] In some possible embodiments, based on the infrared conferencing system shown in Figure 1a, the infrared conferencing unit 200 sends a first uplink signal to the infrared conferencing host 100 at a first transmission power, the infrared transceiver 101 receives the first uplink signal, the infrared conferencing host 100 obtains the first signal strength of the uplink signal, and determines the first control data corresponding to the infrared conferencing unit 200 based on the first signal strength and the preset signal strength. After the infrared transceiver 101 determines the first control data corresponding to each infrared conferencing unit, it sends a first downlink signal including the first control data corresponding to each infrared conferencing unit. The infrared conferencing unit 200 receives the first downlink signal and determines a second transmission power based on the first control data corresponding to the infrared conferencing unit 200, and then sends a second uplink signal at the second transmission power. The infrared transceiver 101 receives the second uplink signal, wherein the second signal strength corresponding to the second uplink signal is the preset signal strength, and the second signal strength received by the infrared conferencing host 100 is the preset signal strength.

[0042] Refer to FIG. 1 b , which is a schematic diagram showing the principle of an infrared conferencing system provided in an embodiment of the present application.

[0043] The infrared conference host of the infrared conference system includes a main processor 1001, multiple digital infrared signal demodulators (such as digital infrared signal demodulator 1, ..., digital infrared signal demodulator n as shown in Figure 1b), multiple received signal strength detectors (such as received signal strength detector 1, ..., received signal strength detector n as shown in Figure 1b), multiple frequency selection circuits (such as frequency selection circuit 1, ..., frequency selection circuit n as shown in Figure 1b), an infrared receiver 1002, a digital infrared signal modulator 1003, an infrared transmission signal control circuit 1004 and an infrared transmitter 1005. This application mainly uses the frequency selection circuit 1, the digital infrared signal demodulator 1 and the received signal strength detector 1 as examples to illustrate the internal connection structure of the infrared conference host. In actual applications, the connection between each frequency selection circuit, digital infrared signal demodulator and received signal strength detector is similar to the connection between the frequency selection circuit 1, the digital infrared signal demodulator 1 and the received signal strength detector 1. Among them, the infrared receiver 1002 is connected to the frequency selection circuit 1, the frequency selection circuit 1 is connected to the received signal strength detector 1, the received signal strength detector 1 is connected to the digital infrared signal demodulator 1, and is also connected to the main processor 1001. The main processor 1001 is also connected to the digital infrared signal modulator 1003, the digital infrared signal modulator 1003 is also connected to the infrared transmission signal control circuit 1004, and the infrared transmission signal control circuit 1004 is also connected to the infrared transmitter 1005.

[0044] Taking the infrared conference unit 200 as an example, the infrared conference unit 200 of the infrared conference system includes a main processor 2001, a digital infrared signal demodulator 2002, an infrared receiver 2003, a digital infrared signal modulator 2004, an infrared transmission signal control circuit 2005, and an infrared transmitter 2006. The infrared receiver 2003 is connected to the infrared transmitter 1005 in the infrared conference host, and is also connected to the digital infrared signal demodulator 2002. The digital infrared signal demodulator 2002 is also connected to the main processor 2001. The main processor 2001 is also connected to the digital infrared signal modulator 2004. The digital infrared signal modulator 2004 is also connected to the infrared transmission signal control circuit 2005. The infrared transmission signal control circuit 2005 is also connected to the infrared transmitter 2006. The infrared transmitter 2006 is also connected to the infrared receiver 1002 in the infrared conference host.

[0045] It should be noted that this application primarily uses the infrared conference unit 200 as an example for illustration. In actual applications, the structure of each infrared conference unit (such as infrared conference unit 200 ... infrared conference unit 20n shown in Figure 1b) is similar to that of the infrared conference unit 200. Furthermore, each infrared conference unit corresponds to a frequency selection circuit in the infrared conference host, and the number of infrared conference units used when speaking is enabled is the same as the number of frequency selection circuits in the infrared conference host. The number of frequency selection circuits in the infrared conference host increases by one burst channel to the maximum number of microphones allowed to be enabled. In the embodiment of this application, the infrared conference unit 200 corresponds to the frequency selection circuit 1 in the infrared conference host. In some possible embodiments, based on the infrared conferencing system shown in Figure 1b, the infrared transmitter 2006 in the infrared conferencing unit 200 sends a first uplink signal at a first transmission power, the infrared receiver 1002 in the infrared conferencing host receives the first uplink signal, the frequency selection circuit 1 corresponding to the infrared conferencing unit 200 receives the first uplink signal of the infrared conferencing unit 200, the received signal strength detector 1 obtains the first signal strength of the first uplink signal and sends the first signal strength to the main processor 1001, the digital infrared signal demodulator 1 parses the first uplink signal and sends it to the main processor 1001, the main processor 1001 determines the first control data corresponding to the infrared conferencing unit 200 based on the first signal strength and the preset signal strength, the digital infrared signal modulator 1003 receives the first control data corresponding to each infrared conferencing unit, and after processing by the digital infrared signal modulator 1003 and the infrared transmission signal control circuit 1004, sends the first downlink signal containing the first control data corresponding to each infrared conferencing unit through the infrared transmitter 1005. The infrared receiver 2003 in the infrared conferencing unit 200 receives a first downlink signal containing the first control data corresponding to each infrared conferencing unit. The digital infrared signal demodulator 2002 demodulates the first downlink signal containing the first control data corresponding to each infrared conferencing unit and then sends the first control data corresponding to the infrared conferencing unit 200 to the main processor 2001 for processing. The main processor 2001 sends a second uplink signal containing the processed first control data corresponding to the infrared conferencing unit 200 to the digital infrared signal modulator 2004 to determine a second transmit power. The digital infrared signal modulator 2004 then sends the second transmit power to the infrared transmit signal control circuit 2005. The infrared transmit signal control circuit 2005 adjusts the first transmit power to the second transmit power, and the infrared transmitter 2006 transmits a second uplink signal at the second transmit power. The infrared receiver 1002 in the infrared conferencing host receives the second uplink signal, and the second signal strength corresponding to the second uplink signal is the preset signal strength.

[0046] Refer to FIG2a, which is a flow chart of a method for controlling the transmission power of a digital infrared conference unit provided in an embodiment of the present application. The method of this embodiment includes the following steps:

[0047] 201: The infrared conference unit sends a first uplink signal to the infrared conference host at a first transmission power.

[0048] The first uplink signal of each infrared conference unit is sent by each infrared conference unit at a first transmission power corresponding to each infrared conference unit.

[0049] It should be noted that, if the first uplink signal is sent by the infrared conference unit to the infrared conference host for the first time, the first transmission power is the maximum transmission power of the infrared conference unit.

[0050] It can be seen that when the first uplink signal is sent for the first time, the infrared conference unit will send the uplink signal at the maximum transmission power, which can increase the signal strength, minimize signal attenuation and interference, improve the signal transmission quality and stability, ensure the reliability and coverage of signal transmission, and ensure that all parties participating in the meeting can receive a strong and stable signal, thereby improving the effect of the meeting and the experience of the participants.

[0051] 202: The infrared conference host receives a first uplink signal and obtains a first signal strength of the first uplink signal.

[0052] Exemplarily, after the infrared conferencing unit sends a first uplink signal to the infrared conferencing host at a first transmission power, the receiver in the infrared conferencing host receives the first uplink signal, and the infrared conferencing host obtains a first signal strength corresponding to the first uplink signal, wherein the first signal strength is the signal strength when the infrared conferencing host receives the first uplink signal.

[0053] 203: The infrared conference host determines first control data according to the first signal strength and the preset signal strength.

[0054] Exemplarily, the first control data corresponding to each infrared conference unit is determined based on the first signal strength and the preset signal strength of each infrared conference unit, wherein the first control data corresponding to each infrared conference unit is the difference between the first signal strength of each infrared conference unit and the preset signal strength. In one possible embodiment, before the infrared conference host determines the first control data of each infrared conference unit based on the first signal strength and the preset signal strength of each infrared conference unit, it is also necessary to obtain the environmental noise coefficient, and then predict the third signal strength of the first uplink signal based on the environmental noise coefficient, the distance between the infrared conference host and each infrared conference unit, and the first transmission power.

[0055] First, the signal strength loss in free space without obstacles is calculated, where the signal strength loss can be expressed by formula (1):

[0056] Among them, F is the signal strength loss, d is the distance between the infrared conference unit and the infrared conference host, p is the environmental noise coefficient, and a, b, and c are preset parameters.

[0057] Then, the third signal strength of the first uplink signal is predicted according to the signal strength loss, wherein the third signal strength can be expressed by formula (2): X=YFp Formula (2)

[0058] Wherein, X is the predicted third signal strength, Y is the first signal strength corresponding to the first transmit power, and p is the environmental noise coefficient.

[0059] It can be seen that by predicting the third signal strength of the first uplink signal based on the environmental noise coefficient, the distance between the infrared conference host and the infrared conference unit, and the first transmission power, a third signal strength close to the signal strength when no accidental factors occur can be obtained, thereby making the first control data obtained more accurate.

[0060] In one possible embodiment, if the difference between the third signal strength and the first signal strength is less than or equal to the first threshold, the difference between the first signal strength and the preset signal strength is directly used as the first control data corresponding to the first infrared conference unit based on the first signal strength and the preset signal strength, wherein the first infrared conference unit is any one of the at least one infrared conference unit.

[0061] In another possible embodiment, if the difference between the third signal strength and the first signal strength is greater than the first threshold, t-1 uplink signals sent by the first infrared conference unit before sending the first uplink signal are obtained, and the first control data corresponding to the first infrared conference unit is determined based on the t uplink signals and the first signal strength.

[0062] Specifically, the infrared conference host predicts the fourth signal strength corresponding to each uplink signal based on the noise coefficient, determines the fifth signal strength corresponding to each uplink signal based on each uplink signal, and then determines the difference between the fourth signal strength and the fifth signal strength of each uplink signal in the t uplink signals. If the difference between the fourth signal strength and the fifth signal strength corresponding to the t uplink signals is greater than the first threshold, the first control data corresponding to the first infrared conference unit is determined based on the first signal strength and the preset signal strength. If the difference between the fourth signal strength and the fifth signal strength corresponding to the t uplink signals is less than or equal to the first threshold, the difference between the signal strength corresponding to the first transmission power and the preset signal strength is used as the first control data corresponding to the first infrared conference unit.

[0063] For example, assuming the preset signal strength is 12dB and the first threshold is 0.5dB. If the predicted third signal strength is 10dB, the first signal strength received by the infrared conferencing host is 10dB, and the difference between the third signal strength and the first signal strength is 0dB, which is less than the first threshold of 0.5dB, then the difference between the first signal strength of 10dB and the preset signal strength of 12dB is directly used as the first control data corresponding to the first infrared conferencing unit.

[0064] If the predicted third signal strength is 10dB, the first signal strength received by the infrared conference host is 5dB, and the difference between the first signal strength of 5dB and the predicted third signal strength of 10dB is 5dB, which is greater than the first threshold of 0.5dB, then the t-1 uplink signals sent by the first infrared conference unit before sending the first uplink signal are obtained, and then the infrared conference host determines the fourth signal strength predicted based on the noise figure and the corresponding fifth signal strength based on the t-1 uplink signals. If the corresponding fifth signal strengths determined by the t-1 uplink signals are all 5dB, and the differences between them and the fourth signal strength of 10dB are all greater than the first threshold of 0.5dB, then the difference of 7dB between the first signal strength of 5dB and the preset signal strength of 12dB is used as the first control data corresponding to the first infrared conference unit. If t-1 second uplink signals determine that among the corresponding fifth signal strengths, there is a fifth signal strength of 10dB, and the difference between the fifth signal strength and the fourth signal strength of 10dB is 0dB, which is less than the first threshold value of 0.5dB, then the difference between the signal strength corresponding to the first transmission power and the preset signal strength is used as the first control data corresponding to the first infrared conference unit. Assuming that the signal strength corresponding to the first transmission power is 15dB, the difference of 3dB between the signal strength 15dB corresponding to the first transmission power and the preset signal strength 12dB is used as the first control data corresponding to the first infrared conference unit.

[0065] As can be seen, when each infrared conference unit is performing uplink transmission, if there is an accidental factor blocking the transmission, such as a person or object blocking the infrared signal, the infrared signal received by the infrared host may be significantly attenuated. The signal strength received by the infrared conference host in a stable environment is predicted by comparing the ambient noise coefficient (i.e., the first signal strength) in a stable environment without accidental factors. Then, by comparing the current signal strength received by the infrared host with the predicted signal strength, it is possible to determine whether an accidental factor is currently present or whether the accidental factor will disappear in a short time. If the difference between the two signal strengths is small, it is considered that there is no accidental factor at present, and the real-time received signal strength is used to control the next transmission power. If the difference between the two signals is large, the signal strength within the previous t detections is analyzed. If the signal strength within the previous t detections is significantly different from the predicted signal strength, it indicates that the accidental factor will not be eliminated in a short time. The real-time received signal strength is used to control the next transmission power. If the signal strength within the previous t detections is very different from the predicted signal strength, the infrared conference unit determines the first signal strength based on the first uplink signal corresponding to the first transmission power, and uses the first signal strength to control the next transmission power. By comparing signal strength multiple times, we can help eliminate the influence of temporary factors, obtain more reliable signal strength data, and improve the accuracy and reliability of control data.

[0066] 204: The infrared conference host sends a first downlink signal in response to the first uplink signal.

[0067] After the at least one infrared conferencing unit sends the first uplink signal, the infrared conferencing host obtains the first signal strength based on the first uplink signal, and then determines the first downlink signal including the first control data of each infrared conferencing unit based on the first signal strength and the preset signal strength, and sends the first downlink signal to the infrared conferencing unit through the receiver in the infrared conferencing host.

[0068] It should be noted that the infrared conference host has only one downlink signal line. Therefore, when multiple infrared conference units simultaneously send uplink signals to the infrared conference host, the infrared conference host sends a downlink signal to each of the multiple conference units via the downlink signal line. This downlink signal includes the control data corresponding to each of the multiple infrared conference units. Accordingly, the infrared conference host broadcasts this downlink signal, and each conference unit extracts its own control data from the downlink signal and adjusts its transmission power based on this control data.

[0069] For example, when four infrared conference units (infrared conference unit 1, infrared conference unit 2, infrared conference unit 3, and infrared conference unit 4) simultaneously send a first uplink signal to the infrared conference host, the infrared conference host will send a first downlink signal to the four infrared conference units through a downlink signal line. The first downlink signal includes response information for the first uplink signal of the four conference units and the first control data corresponding to the four conference units. Accordingly, infrared conference unit 1, infrared conference unit 2, infrared conference unit 3, and infrared conference unit 4 obtain the first downlink signal, and infrared conference unit 1, infrared conference unit 2, infrared conference unit 3, and infrared conference unit 4 will parse their respective response information and the first control data of the four conference units from the first downlink signal. Then, infrared conference unit 1, infrared conference unit 2, infrared conference unit 3, and infrared conference unit 4 will adjust their respective transmission powers based on their respective first control data.

[0070] 205: The infrared conference unit receives a first downlink signal including first control data, and determines a second transmission power according to the first control data.

[0071] The first control data of each infrared conference unit includes the difference between the signal strength of each infrared conference unit received by the infrared conference host last time and a preset signal strength. The infrared conference host receives a first downlink signal including the first control data of each infrared conference unit and obtains a power adjustment coefficient based on the difference between the signal strength of each infrared conference unit in the first control data of each infrared conference unit and the preset signal strength. Based on the power adjustment coefficient, the infrared conference unit adjusts the power by adjusting the gain of the amplifier, where the gain refers to the signal amplification factor between the input and output of the amplifier. When the received signal strength is less than the preset signal strength, the amplifier increases the gain by the difference, correspondingly increasing the first transmit power to amplify the first transmit power and obtain a second transmit power. When the received signal strength is equal to the preset signal strength, the amplifier gain is not changed, and the first transmit power is directly used as the second transmit power. When the received signal strength is greater than the preset signal strength, the amplifier decreases the gain by the difference, correspondingly reducing the first transmit power to reduce the first transmit power and obtain a second transmit power.

[0072] It can be seen that if the transmission power is too low, the signal may not be able to be transmitted stably to the receiving device, resulting in a decrease in signal quality. If the transmission power is too high, it may cause interference between signals. The infrared conference unit increases or decreases the first transmission power accordingly through the amplifier to ensure stable and accurate signal transmission, so that users can receive stable information when using the infrared conference system, improve interoperability and the overall performance of the system, and thus improve the performance of the conference system.

[0073] 206: The infrared conference unit sends a second uplink signal at a second transmission power.

[0074] Each infrared conference unit completes the adjustment of the first transmission power, obtains the second transmission power, and then sends the second uplink signal with the second transmission power.

[0075] 207: The infrared conference host receives the second uplink signal, and the second signal strength corresponding to the second uplink signal is the preset signal strength.

[0076] The infrared conference host receives the second uplink signal from each of the infrared conference units, and then determines the second signal strength corresponding to the second uplink signal. It should be noted that the second signal strength is a preset strength, which is the signal strength received at the infrared host, not the signal strength of the second uplink signal emitted by the infrared conference unit.

[0077] It can be seen that the second signal strength corresponding to the second uplink signal received by the infrared conference host from each infrared conference unit is the preset signal strength, and the amplitude of the uplink infrared signals of all infrared conference units received by the transceiver in the infrared conference host is consistent, ensuring that the infrared signal is not easily linearly distorted after passing through the amplifier, avoiding the generation of excessive harmonic signals to interfere with the uplink signals of other infrared units, and also ensuring the quantization accuracy, which will not affect the modulation of the infrared digital signal.

[0078] For example, when four infrared conference units send uplink signals, the first signal strengths received by the infrared host from the four infrared conference units are different, as shown in Figure 2b, which is a schematic diagram of the first signal strength provided by an embodiment of the present application. The four infrared conference units are at different carrier frequencies (frequency 1, frequency 2, frequency 3, frequency 4), and the signal strengths received by the infrared host from the four infrared conference units at different frequencies are different. After the first control data adjusts the first transmission power of the four infrared conference units, the second signal strengths received by the infrared host from the four infrared conference units are all the same, as shown in Figure 2c, which is a schematic diagram of the second signal strength provided by an embodiment of the present application. The four infrared conference units are still at different carrier frequencies (frequency 1, frequency 2, frequency 3, frequency 4), but the next signal strengths received by the infrared host from the four infrared conference units at different frequencies, that is, the second signal strengths, become the same, and the next signal strengths are all preset signal strengths.

[0079] Refer to Figure 3, which is a schematic diagram of an infrared conference host provided by an embodiment of the present application. As shown in Figure 3, the infrared conference host 300 includes a transceiver unit 301 and a processing unit 302;

[0080] The transceiver unit 301 is configured to receive a first uplink signal from at least one infrared conference unit among the plurality of conference units;

[0081] Obtaining a first signal strength of a first uplink signal of each infrared conferencing unit;

[0082] The processing unit 302 is configured to determine first control data corresponding to each infrared conferencing unit according to the first signal strength of each infrared conferencing unit and a preset signal strength;

[0083] The transceiver unit 301 is configured to send a first downlink signal to the at least one infrared conferencing unit;

[0084] A second uplink signal of each infrared conference unit is received from each infrared conference unit.

[0085] In some possible embodiments, before determining the first control data corresponding to each infrared conferencing unit based on the first signal strength of each infrared conferencing unit and the preset signal strength, the processing unit 302 is further configured to:

[0086] Obtain the environmental noise coefficient;

[0087] Predicting a third signal strength of the first uplink signal of each infrared conference unit based on the environmental noise coefficient, the distance from each infrared conference unit, and the first transmit power corresponding to each infrared conference unit;

[0088] The determining, according to the first signal strength and the preset signal strength of each infrared conference unit, first control data corresponding to each infrared conference unit includes:

[0089] For a first infrared conferencing unit, calculating a difference between a third signal strength and a first signal strength of the first infrared conferencing unit, wherein the first infrared conferencing unit is any one of the at least one infrared conferencing unit;

[0090] If the difference is less than or equal to a first threshold, determining first control data corresponding to the first infrared conference unit according to the first signal strength of the first infrared conference unit and a preset signal strength;

[0091] If the first difference is greater than a first threshold, then obtain t-1 second uplink signals sent by the first infrared conference unit before sending the first uplink signal; determine the first control data corresponding to the first infrared conference unit based on the t uplink signals and the first signal strength, wherein the t uplink signals include the first uplink signal and the t-1 second uplink signals.

[0092] In some possible embodiments, in determining the first control data corresponding to the first infrared conferencing unit according to the t uplink signals and the first signal strength, the processing unit 302 is specifically configured to:

[0093] Determine a difference between a fourth signal strength and a fifth signal strength of each of the t uplink signals, wherein the fourth signal strength is determined by the infrared conference host based on a noise factor, and the fifth signal strength is determined by the infrared conference host based on each uplink signal;

[0094] If the differences corresponding to the t uplink signals are all greater than the first threshold, determining first control data corresponding to the first infrared conferencing unit according to the first signal strength and the preset signal strength;

[0095] If there is a difference among the differences corresponding to the t uplink signals that is less than or equal to the first threshold, first control data corresponding to the first infrared conference unit is determined according to the first transmit power.

[0096] In some possible embodiments, the first control data corresponding to each infrared conference unit is a difference between the first signal strength of each infrared conference unit and the preset signal strength.

[0097] In some possible embodiments, if the first uplink signal of each infrared conference unit is sent by each infrared conference unit to the infrared conference host for the first time, the first transmission power of each infrared conference unit is the maximum transmission power of each infrared conference unit.

[0098] Refer to Figure 4, which is a schematic diagram of an infrared conference unit provided in an embodiment of the present application. As shown in Figure 4, the infrared conference unit 400 includes a transceiver unit 401 and a processing unit 402;

[0099] The transceiver unit 401 is configured to send a first uplink signal to the infrared conference host at a first transmission power;

[0100] receiving a first downlink signal corresponding to the first uplink signal from the infrared conference host;

[0101] Acquire first control data corresponding to the first infrared conference unit from the first downlink signal;

[0102] The processing unit 402 is configured to determine a second transmission power of each infrared conferencing unit according to the first control data corresponding to each infrared conferencing unit;

[0103] The transceiver unit 401 is configured to determine a second transmission power of the first infrared conferencing unit according to first control data corresponding to the first infrared conferencing unit;

[0104] The second uplink signal is sent to the infrared conference host at the second transmission power, so that the second signal strength of the second uplink signal of the first infrared conference unit received by the infrared conference host is the preset signal strength.

[0105] In some possible embodiments, in determining the second transmission power of the first infrared conferencing unit according to the first control data corresponding to the first infrared conferencing unit, the processing unit 402 is specifically configured to:

[0106] obtaining a power adjustment coefficient corresponding to the first infrared conference unit according to first control data corresponding to the first infrared conference unit;

[0107] According to the power adjustment coefficient corresponding to the first infrared conferencing unit, the first transmission power of the first infrared conferencing unit is adjusted to obtain the second transmission power of the first infrared conferencing unit.

[0108] In some possible embodiments, if the first uplink signal is sent by the first infrared conferencing unit to the infrared conferencing host for the first time, the first transmission power is the maximum transmission power of the first infrared conferencing unit.

[0109] Referring to Figure 5 , which is a schematic diagram of a communication device provided in an embodiment of the present application, communication device 500 includes a transceiver 501, a processor 502, and a memory 503. These are connected via a bus 504. Memory 503 is used to store relevant computer programs and data and can transmit the stored data to processor 502.

[0110] The transceiver 501 can be used to send a first uplink signal at a first transmission power; receive the first uplink signal; receive a first downlink signal including first control data of each infrared conference unit; send a second uplink signal at a second transmission power; receive a second uplink signal, and the second signal strength corresponding to the second uplink signal is a preset signal strength.

[0111] The processor 502 may be configured to obtain a first signal strength of the first uplink signal; and determine first control data of each infrared conferencing unit according to the first signal strength of each infrared conferencing unit and a preset signal strength.

[0112] The memory 503 can be used to store computer programs and data.

[0113] It should be noted that the functions corresponding to the processor 502 and the memory 503 can be implemented through hardware design, software design, or a combination of hardware and software, and there is no limitation here.

[0114] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the program can implement the process related to the infrared conference host in the transmission power control method of the digital infrared conference unit provided in the above method embodiment.

[0115] The present application also provides a computer program product that, when executed on a computer or processor, causes the computer or processor to perform one or more steps of any of the aforementioned methods for controlling the transmit power of a digital infrared conferencing unit. If the various components of the aforementioned devices are implemented as software functional units and sold or used as independent products, they may be stored in the computer-readable storage medium.

[0116] It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0117] It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAMbus RAM (DR RAM).

[0118] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated into the processor.

[0119] It should be noted that the memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0120] It should also be understood that the first, second, third, fourth and various numerical numbers involved in this document are only distinctions made for the convenience of description and are not intended to limit the scope of this application.

[0121] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0122] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0123] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0124] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0125] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0126] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0127] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0128] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0129] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0130] The modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0131] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for controlling the transmission power of a digital infrared conference unit. It is characterized in that The method is applied to an infrared conference host, the infrared conference host is located in an infrared conference system, and the infrared conference system also includes a plurality of infrared conference units. The method includes: Receiving a first uplink signal of each infrared conference unit in the at least one infrared conference unit from the plurality of conference units, wherein the first uplink signal of each infrared conference unit is sent by each infrared conference unit at a first transmission power corresponding to each infrared conference unit; Acquire a first signal strength of a first uplink signal of each infrared conference unit; Determine the first control data corresponding to each infrared conference unit according to the first signal strength of each infrared conference unit and the preset signal strength, wherein the first control data corresponding to each infrared conference unit is used to determine the next transmission power of each infrared conference unit; Sending a first downlink signal to the at least one infrared conference unit, wherein the first downlink signal includes first control data of each infrared conference unit; A second uplink signal of each infrared conference unit is received from each infrared conference unit, wherein a second signal strength of the second uplink signal of each infrared conference unit is the preset signal strength, and the second uplink signal is sent by each infrared conference unit at a second transmission power, and the second transmission power is determined by each infrared conference unit according to the first control data of each infrared conference unit.

2. The method according to claim 1, It is characterized in that Before determining the first control data corresponding to each infrared conference unit according to the first signal strength of each infrared conference unit and the preset signal strength, the method further includes: Obtain environmental noise coefficient; Predicting a third signal strength of the first uplink signal of each infrared conference unit based on the environmental noise coefficient, the distance from each infrared conference unit, and the first transmission power corresponding to each infrared conference unit; The determining, according to the first signal strength of each infrared conference unit and the preset signal strength, the first control data corresponding to each infrared conference unit comprises: For a first infrared conference unit, calculating a difference between a third signal strength and a first signal strength of the first infrared conference unit, wherein the first infrared conference unit is any one of the at least one infrared conference unit; If the difference is less than or equal to a first threshold, determining first control data corresponding to the first infrared conference unit according to the first signal strength of the first infrared conference unit and a preset signal strength; If the first difference is greater than a first threshold, then obtain t-1 second uplink signals sent by the first infrared conference unit before sending the first uplink signal; determine the first control data corresponding to the first infrared conference unit based on the t uplink signals and the first signal strength, wherein the t uplink signals include the first uplink signal and the t-1 second uplink signals.

3. The method according to claim 2, It is characterized in that The determining, according to the t uplink signals and the first signal strength, the first control data corresponding to the first infrared conference unit includes: Determine a difference between a fourth signal strength and a fifth signal strength of each of the t uplink signals, wherein the fourth signal strength is determined by the infrared conference host based on a noise coefficient, and the fifth signal strength is determined by the infrared conference host based on each uplink signal; If the differences corresponding to the t uplink signals are all greater than the first threshold, determining the first control data corresponding to the first infrared conference unit according to the first signal strength and the preset signal strength; If there is a difference value less than or equal to the first threshold value among the differences corresponding to the t uplink signals, the first control data corresponding to the first infrared conference unit is determined according to the first transmit power.

4. The method according to any one of claims 1 to 3, It is characterized in that The first control data corresponding to each infrared conference unit is the difference between the first signal strength of each infrared conference unit and the preset signal strength.

5. The method according to any one of claims 1 to 4, It is characterized in that If the first uplink signal of each infrared conference unit is sent by each infrared conference unit to the infrared conference host for the first time, the first transmission power of each infrared conference unit is the maximum transmission power of each infrared conference unit.

6. A method for controlling the transmission power of a digital infrared conference unit. It is characterized in that The method is applied to a first infrared conference unit, the first infrared conference unit is located in an infrared conference system, and the infrared conference system also includes an infrared conference host and multiple infrared conference units. The method includes: Sending a first uplink signal to the infrared conference host at a first transmission power, wherein the first infrared conference unit is any one of at least one infrared conference unit among the multiple conference units, and the at least one infrared conference unit simultaneously sends the first uplink signal to the infrared conference host; Receiving a first downlink signal for the first uplink signal from the infrared conference host, wherein the first downlink signal includes first control data corresponding to each infrared conference unit of the at least one infrared conference unit, and the first control data corresponding to each infrared conference unit is determined by the infrared conference host according to the first signal strength of the first uplink signal of each infrared conference unit and a preset signal strength, and is used to determine the next transmission power of each infrared conference unit; Acquire first control data corresponding to the first infrared conference unit from the first downlink signal; determining a second transmission power of the first infrared conference unit according to first control data corresponding to the first infrared conference unit; The second uplink signal is sent to the infrared conference host at the second transmission power, so that the second signal strength of the second uplink signal of the first infrared conference unit received by the infrared conference host is the preset signal strength.

7. The method according to claim 6, It is characterized in that The determining, according to the first control data corresponding to the first infrared conference unit, the second transmission power of the first infrared conference unit comprises: Obtaining a power adjustment coefficient corresponding to the first infrared conference unit according to the first control data corresponding to the first infrared conference unit; According to the power adjustment coefficient corresponding to the first infrared conferencing unit, the first transmission power of the first infrared conferencing unit is adjusted to obtain the second transmission power of the first infrared conferencing unit.

8. The method according to claim 6 or 7, It is characterized in that If the first uplink signal is sent by the first infrared conference unit to the infrared conference host for the first time, the first transmission power is the maximum transmission power of the first infrared conference unit.

9. A communication device, It is characterized in that include: A processor and a memory, wherein the processor is connected to the memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the device executes the method according to any one of claims 1 to 8.

10. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method according to any one of claims 1 to 8.

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