Signal detection method and device

Abstract

The embodiment of the invention provides a signal detection method and device, and the method comprises the steps: executing a corresponding operation according to whether the signal power of a to-be-detected signal meets a first condition or not, and determining the validity of the to-be-detected signal; or the influence factor power of the to-be-detected signal is corrected according to an influence factor power correction rule, the validity of the to-be-detected signal is determined based on the signal power and the corrected influence factor power, and the influence factor power is noise power or interference noise power. According to the signal detection method and device provided by the embodiment of the invention, the false detection probability of signal detection can be reduced, and the reliability of signal detection is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a signal detection method and device. Background Art

[0002] In the related art, the validity of the signal is detected by the signal-to-noise ratio (SNR) or signal-to-interference plus noise ratio (SINR) of the signal to be detected. For example, given a detection threshold Snr_Threshold, the received signal power Power_S and the noise / interference power Power_N are calculated, SNR=Power_S / Power_N, and the SNR is compared with the detection threshold. When SNR>Snr_Threshold, it is detected as a valid signal, otherwise it is detected as an invalid signal.

[0003] The signal detection method in the related art may have false detection problems. Summary of the invention

[0004] The embodiments of the present application provide a signal detection method and device to solve the defect of false detection in signal detection in the related art and reduce the probability of false detection of signals.

[0005] In a first aspect, an embodiment of the present application provides a signal detection method, comprising:

[0006] performing a corresponding operation to determine the validity of the signal to be detected according to whether the signal power of the signal to be detected meets the first condition; or

[0007] The influencing factor power of the signal to be detected is corrected according to an influencing factor power correction rule, and the validity of the signal to be detected is determined based on the signal power and the corrected influencing factor power, where the influencing factor power is noise power or interference noise power.

[0008] Optionally, performing a corresponding operation according to whether the signal power satisfies a first condition to determine the validity of the signal to be detected includes:

[0009] When the signal power does not satisfy the first condition, determining that the signal to be detected is an invalid signal; or

[0010] In a case where the signal power satisfies the first condition, the validity of the signal to be detected is determined based on the signal power and the influencing factor power.

[0011] Optionally, the determining the validity of the signal to be detected based on the signal power and the influencing factor power includes:

[0012] A communication quality index is calculated based on the signal power and the influencing factor power, and the validity of the signal to be detected is determined based on the communication quality index.

[0013] Optionally, determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power includes:

[0014] Calculating a communication quality index based on the signal power and the corrected influencing factor power;

[0015] The validity of the signal to be detected is determined based on the communication quality indicator.

[0016] Optionally, the influencing factor power correction rule includes:

[0017] In a case where the influencing factor power is greater than a preset influencing factor power threshold, determining the influencing factor power to be the corrected influencing factor power;

[0018] In a case where the influencing factor power is not greater than a preset influencing factor power threshold, the preset influencing factor power value is determined to be the corrected influencing factor power.

[0019] Optionally, the first condition is: the signal power is greater than a signal power threshold.

[0020] Optionally, the signal power threshold is determined by simulation results and historical signal power.

[0021] In a second aspect, an embodiment of the present application further provides a signal detection device, including:

[0022] a detection unit, configured to perform a corresponding operation to determine the validity of the signal to be detected according to whether the signal power of the signal to be detected satisfies a first condition; or

[0023] The influencing factor power of the signal to be detected is corrected according to an influencing factor power correction rule, and the validity of the signal to be detected is determined based on the signal power and the corrected influencing factor power, where the influencing factor power is noise power or interference noise power.

[0024] Optionally, performing a corresponding operation according to whether the signal power satisfies a first condition to determine the validity of the signal to be detected includes:

[0025] When the signal power does not satisfy the first condition, determining that the signal to be detected is an invalid signal; or

[0026] In a case where the signal power satisfies the first condition, the validity of the signal to be detected is determined based on the signal power and the influencing factor power.

[0027] Optionally, the determining the validity of the signal to be detected based on the signal power and the influencing factor power includes:

[0028] A communication quality index is calculated based on the signal power and the influencing factor power, and the validity of the signal to be detected is determined based on the communication quality index.

[0029] Optionally, determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power includes:

[0030] Calculating a communication quality index based on the signal power and the corrected influencing factor power;

[0031] The validity of the signal to be detected is determined based on the communication quality indicator.

[0032] Optionally, the influencing factor power correction rule includes:

[0033] In a case where the influencing factor power is greater than a preset influencing factor power threshold, determining the influencing factor power to be the corrected influencing factor power;

[0034] In a case where the influencing factor power is not greater than a preset influencing factor power threshold, the preset influencing factor power value is determined to be the corrected influencing factor power.

[0035] Optionally, the first condition is: the signal power is greater than a signal power threshold.

[0036] Optionally, the signal power threshold is determined by simulation results and historical signal power.

[0037] In a third aspect, an embodiment of the present application further provides an electronic device, including a memory, a transceiver, and a processor, wherein:

[0038] A memory for storing a computer program; a transceiver for sending and receiving data under the control of the processor; and a processor for reading the computer program in the memory and implementing the signal detection method described in the first aspect as described above.

[0039] In a fourth aspect, an embodiment of the present application further provides a non-transitory readable storage medium, wherein the non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the signal detection method described in the first aspect as described above.

[0040] In a fifth aspect, an embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the signal detection method described in the first aspect as described above.

[0041] In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is used to enable a computer to execute the signal detection method described in the first aspect as described above.

[0042] In a seventh aspect, an embodiment of the present application further provides a communication device, wherein a computer program is stored in the communication device, and the computer program is used to enable the communication device to execute the signal detection method described in the first aspect above.

[0043] In an eighth aspect, an embodiment of the present application further provides a chip product, wherein a computer program is stored in the chip product, and the computer program is used to enable the chip product to execute the signal detection method described in the first aspect as described above.

[0044] The signal detection method and device provided in the embodiments of the present application process the parameters (signal power and / or influencing factor power) used to calculate the signal-to-noise ratio or the signal-to-interference-and-noise ratio, so as to avoid the problem of signal misdetection when the signal power is too small, the influencing factor power fluctuates, and the influencing factor power is too small. Exemplarily, according to the signal detection method in the related art, when the calculated signal power is too small and obviously not a valid signal, and the influencing factor power is too small, because both the signal power and the influencing factor power are too small, the obtained signal-to-noise ratio or signal-to-interference-to-noise ratio may exceed the detection threshold Snr_Threshold, resulting in signal misdetection, and the invalid signal is misdetected as a valid signal; or when the influencing factor power fluctuates or the influencing factor power result is small, in this case, even if the signal to be detected is an invalid signal, due to the small influencing factor power, the calculated signal-to-noise ratio or signal-to-interference-to-noise ratio value may also exceed the detection threshold Snr_Threshold, resulting in misdetection, and the invalid signal is misdetected as a valid signal; and in the embodiment of the present application, the signal power can be judged, and when the signal power does not meet the first condition, the corresponding operation is performed, or the influencing factor power is corrected to avoid the situation where the influencing factor power is too small, thereby reducing the signal misdetection probability. The signal detection method provided in the embodiment of the present application can reduce the misdetection probability of signal detection and improve the reliability of signal detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 It is a flowchart of signal detection in the related technology provided by this application;

[0047] Figure 2 This is one of the flow charts of the signal detection method provided in the embodiment of the present application;

[0048] Figure 3 This is the second flow chart of the signal detection method provided in the embodiment of the present application;

[0049] Figure 4 This is the third flow chart of the signal detection method provided in the embodiment of the present application;

[0050] Figure 5 This is the fourth flow chart of the signal detection method provided in the embodiment of the present application;

[0051] Figure 6 is a structural schematic diagram of a signal detection device provided in an embodiment of the present application;

[0052] Figure 7 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0054] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0056] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G (5th Generation Mobile Communication Technology, fifth generation mobile communication technology) system. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0057] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0058] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0059] Network devices and terminal devices can each use one or more antennas for multi-input multi-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoding transmission or beamforming transmission, etc.

[0060] To facilitate understanding of the embodiments of the present application, the following describes terms or backgrounds related to the embodiments of the present application:

[0061] Figure 1 is a flow chart of signal detection in the related technology provided by this application, such as Figure 1 As shown, the signal detection method in the related art is to detect the validity of the signal by detecting the signal-to-noise ratio (SNR) or the signal-to-interference plus noise ratio (SINR), that is, given a detection threshold Snr_Threshold, the received signal power Power_S and the noise / interference power Power_N are calculated, SNR=Power_S / Power_N, and the SNR is compared with the detection threshold. When SNR>Snr_Threshold, it is detected as a valid signal, otherwise it is detected as an invalid signal.

[0062] The signal detection method in the related art directly calculates SNR through Power_S and Power_N, and then compares it with the detection threshold. When the calculated signal power Power_S is too small and obviously not a valid signal, or when the calculated noise or interference power Power_N fluctuates and the Power_N result is small, even if there is no valid signal, the calculated SNR value may exceed the detection threshold Snr_Threshold due to the small Power_N, resulting in false detection, and the invalid signal is mistakenly detected as a valid signal.

[0063] The embodiments of the present application provide a signal detection method and device to reduce the probability of signal false detection.

[0064] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] Figure 2 is one of the flow charts of the signal detection method provided in the embodiment of the present application, such as Figure 2 As shown, the embodiment of the present application provides a signal detection method, including:

[0066] Step 210, performing a corresponding operation to determine the validity of the signal to be detected according to whether the signal power of the signal to be detected meets the first condition; or

[0067] The influencing factor power of the signal to be detected is corrected according to an influencing factor power correction rule, and the validity of the signal to be detected is determined based on the signal power and the corrected influencing factor power, where the influencing factor power is noise power or interference noise power.

[0068] Specifically, the signal to be detected can be a signal output from the channel output end or a signal received by the channel receiving end, such as a carrier signal at the receiver input end, a signal at the output end of a terminal demodulator in an analog communication system, or each digital waveform at the output end of a digital demodulator or decoder of a terminal in a digital communication system.

[0069] Signal power can be referred to as the power of the signal or the effective power of the signal. For example, when the signal to be detected is a carrier signal at the input of a receiver, the signal power can be the average power of the carrier signal at the input of the receiver; when the signal to be detected is a signal at the output of a demodulator of a terminal in an analog communication system, the signal power can be the average power of the signal at the output of the demodulator of the terminal; when the signal to be detected is each digital waveform at the output of a digital demodulator or decoder, the signal power can be the average signal energy of each digital waveform (bit) at the output of the digital demodulator or decoder of the terminal.

[0070] The power of the influencing factor is the noise power or the interference noise power. The noise power is the power of the noise signal, and the interference noise power is the power of the interference signal and the noise signal. The interference signal can be the interference signal of the communication system itself and the interference signal brought by the foreign system, such as co-channel interference, multipath interference, etc. Taking the noise power as an example, when the signal to be detected is the carrier signal at the input end of the receiver, the noise power can be the average power of the noise signal in the channel; when the signal to be detected is the signal at the output end of the demodulator of the terminal in the analog communication system, the noise power can be the average power of the noise signal; when the signal to be detected is each digital waveform at the output end of the digital demodulator or decoder, the noise power can be the noise power within the unit frequency band.

[0071] It should be understood that the above is an example for the convenience of understanding the embodiments of the present application. The embodiments of the present application do not limit the signal to be detected. The signal power of the signal to be detected and the power of the influencing factors of the signal to be detected can be determined according to relevant technologies.

[0072] According to whether the signal power of the signal to be detected meets the first condition, a corresponding operation is performed to determine the validity of the signal to be detected:

[0073] The first condition can be used to determine the validity of the signal power of the signal to be detected. Exemplarily, when the signal power of the signal to be detected meets the first condition, the signal power of the signal to be detected is a valid value, and the subsequent operation of determining the validity of the signal to be detected is continued. The operation of determining the validity of the signal to be detected can refer to the relevant technology; when the signal power of the signal to be detected does not meet the first condition, the signal power of the signal to be detected is an invalid value, and the signal to be detected can be directly determined to be an invalid signal.

[0074] Correcting the influencing factor power of the signal to be detected according to the influencing factor power correction rule, determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power:

[0075] The signal power refers to the signal power of the signal to be detected.

[0076] Optionally, the signal power of the signal to be detected may be the signal power that has been judged by the first condition and meets the first condition, or may be the signal power that has not been judged by the first condition.

[0077] The influencing factor power of the signal to be detected is corrected according to the influencing factor power correction rule, and the validity of the signal to be detected is determined by the signal power of the signal to be detected and the corrected influencing factor power, so as to avoid signal misdetection due to incorrect influencing factor power of the signal to be detected (such as fluctuation or too small influencing factor power of the signal to be detected).

[0078] Compared with the related art in which the validity of a signal is detected by a signal-to-noise ratio or a signal-to-interference-plus-noise ratio, the signal detection method provided in the embodiment of the present application performs validity processing (such as judgment or correction) on the parameters (signal power and / or influencing factor power) used to calculate the signal-to-noise ratio or the signal-to-interference-plus-noise ratio. By processing the validity of the signal power and / or the influencing factor power, the problem of signal misdetection caused by the signal power being too small, the influencing factor power fluctuating, and the influencing factor power being too small is avoided. Exemplarily, according to the signal detection method in the related art, when the calculated signal power is too small (obviously not a valid signal) and the influencing factor power is too small, the signal power and the influencing factor power are both too small, and the obtained signal-to-noise ratio or signal-to-interference-to-noise ratio may exceed the detection threshold Snr_Threshold, resulting in signal misdetection, and the invalid signal is misdetected as a valid signal; or when the influencing factor power fluctuates or the influencing factor power result is small, in this case, even if the signal to be detected is an invalid signal, due to the small influencing factor power, the calculated signal-to-noise ratio or signal-to-interference-to-noise ratio value may also exceed the detection threshold Snr_Threshold, resulting in misdetection, and the invalid signal is misdetected as a valid signal; and in the embodiment of the present application, the signal power can be judged, and when the signal power does not meet the first condition, the corresponding operation is performed, or the influencing factor power is corrected to avoid the situation where the influencing factor power is too small, thereby reducing the signal misdetection probability. The signal detection method provided in the embodiment of the present application can reduce the misdetection probability of signal detection and improve the reliability of signal detection.

[0079] Optionally, performing a corresponding operation according to whether the signal power satisfies a first condition to determine the validity of the signal to be detected includes:

[0080] When the signal power does not satisfy the first condition, determining that the signal to be detected is an invalid signal; or

[0081] In a case where the signal power satisfies the first condition, the validity of the signal to be detected is determined based on the signal power and the influencing factor power.

[0082] Specifically, the first condition can be used to determine whether the signal to be detected is an invalid signal. It should be understood that when the signal power does not meet the first condition, the signal to be detected is an invalid signal. When the signal power meets the first condition, the signal to be detected needs to be detected again to determine the validity of the signal to be detected.

[0083] Based on the signal power and the influencing factor power, the validity of the signal to be detected is determined, and reference may be made to related technologies, such as calculating the signal-to-noise ratio or the signal-to-interference-noise ratio, comparing the signal-to-noise ratio or the signal-to-interference-noise ratio with the detection threshold of the signal-to-noise ratio or the signal-to-interference-noise ratio, and judging the validity of the signal to be detected. Reference may also be made to the method provided in the embodiment of the present application: correcting the influencing factor power of the signal to be detected according to the influencing factor power correction rule, and determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power.

[0084] The signal detection method provided in the embodiment of the present application judges the signal power according to the first condition. When the signal power does not meet the first condition, it is determined that the signal to be detected is an invalid signal, and there is no need to continue to calculate the signal-to-noise ratio or the signal-to-interference-and-noise ratio, thereby improving the signal detection efficiency. When the signal power meets the first condition, the validity of the detection signal is checked, thereby avoiding signal misdetection due to incorrect signal power and improving the reliability of signal detection.

[0085] Optionally, the first condition is: the signal power is greater than a signal power threshold.

[0086] Specifically, the signal power threshold may be preset.

[0087] The signal power meeting the first condition means that the signal power is greater than the signal power threshold.

[0088] The signal power not satisfying the first condition means that the signal power is less than or equal to the signal power threshold.

[0089] The signal detection method provided in the embodiment of the present application can determine that the signal to be detected is an invalid signal according to the signal power when the signal power does not meet the first condition and the signal power is too small. The embodiment of the present application avoids signal misdetection due to too small signal power and improves the reliability of signal detection.

[0090] Optionally, the signal power threshold is determined by simulation results and historical signal power.

[0091] Specifically, since the signal power Power_S value varies with the transmission power of the signal, the signal power threshold S_Threshold value can be determined according to simulation results and historical signal power.

[0092] Exemplarily, the signal to be detected is simulated by simulating historical signal power to obtain simulation results, and the signal power threshold is determined in combination with expert experience.

[0093] Optionally, the signal power threshold may be a preset fixed value or a dynamic value.

[0094] Optionally, the method further comprises:

[0095] The signal power threshold is adaptively adjusted according to the historical signal power.

[0096] Specifically, the signal power threshold may be adjusted in a semi-static or dynamic manner.

[0097] In a possible implementation, the scheme for dynamically adjusting the signal power threshold may be: obtaining historical signal power in real time, inputting the historical signal power obtained in real time into a simulation system, obtaining simulation results, and determining the signal power threshold according to the simulation results.

[0098] In one possible implementation, the solution for semi-statically adjusting the signal power threshold may be: setting a sampling interval, obtaining historical signal power according to the sampling interval, inputting the obtained historical signal power into a simulation system, obtaining simulation results, and determining the signal power threshold according to the simulation results.

[0099] It should be understood that the above are examples provided for the purpose of facilitating the understanding of the present application. The embodiments of the present application do not limit the sampling frequencies of the semi-static adjustment of the signal power threshold and the dynamic adjustment of the signal power threshold. It should be understood that the sampling frequency of the dynamic adjustment of the signal power threshold is higher than the sampling frequency of the semi-static adjustment of the signal power threshold, and the sampling frequency refers to the frequency for obtaining the historical signal power.

[0100] Optionally, the signal power threshold adjustment method may be determined according to a signal detection scenario and a dynamic variation range of the signal power Power_S.

[0101] The signal detection method provided in the embodiment of the present application provides a method for determining a signal power threshold. By limiting the signal power threshold, signal misdetection due to too low signal power can be avoided, thereby improving the reliability of signal detection.

[0102] Optionally, when the signal power satisfies the first condition, and when the validity of the signal to be detected is determined based on the signal power and the influencing factor power:

[0103] The determining, based on the signal power and the influencing factor power, the validity of the signal to be detected includes:

[0104] A communication quality index is calculated based on the signal power and the influencing factor power, and the validity of the signal to be detected is determined based on the communication quality index.

[0105] Specifically, when the influencing factor power is noise power, the communication quality indicator is a signal-to-noise ratio;

[0106] In the case where the influencing factor power is interference noise power, the communication quality indicator is a signal to interference plus noise ratio.

[0107] The calculation of the communication quality index can refer to the relevant technology and will not be repeated here.

[0108] In one possible implementation, when the signal power satisfies the first condition, the communication quality index is calculated based on the signal power and the influencing factor power. When the communication quality index is greater than the detection threshold Snr_Threshold, the signal to be detected is determined to be a valid signal; when the communication quality index is less than or equal to the detection threshold Snr_Threshold, the signal to be detected is determined to be an invalid signal.

[0109] Optionally, when the signal power satisfies the first condition, and when the validity of the signal to be detected is determined based on the signal power and the influencing factor power:

[0110] The determining, based on the signal power and the influencing factor power, the validity of the signal to be detected includes:

[0111] A communication quality index is calculated based on the signal power and the influencing factor power, and the validity of the signal to be detected is determined based on the communication quality index, wherein the influencing factor power is the influencing factor power corrected according to an influencing factor power correction rule.

[0112] Specifically, when the influencing factor power is noise power, the communication quality indicator is a signal-to-noise ratio;

[0113] In the case where the influencing factor power is interference noise power, the communication quality indicator is a signal to interference plus noise ratio.

[0114] The calculation of the communication quality index can refer to the relevant technology and will not be repeated here.

[0115] In one possible implementation, when the signal power satisfies the first condition, the communication quality index is calculated based on the signal power and the corrected influencing factor power. When the communication quality index is greater than the detection threshold Snr_Threshold, the signal to be detected is determined to be a valid signal; when the communication quality index is less than or equal to the detection threshold Snr_Threshold, the signal to be detected is determined to be an invalid signal.

[0116] The signal detection method provided in the embodiment of the present application detects the validity of the signal when the signal power meets the first condition, avoids signal misdetection due to incorrect signal power, and improves the reliability of signal detection.

[0117] For correcting the influencing factor power of the signal to be detected according to the influencing factor power correction rule, determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power, where the influencing factor power is noise power or interference noise power:

[0118] Optionally, determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power includes:

[0119] Calculating a communication quality index based on the signal power and the corrected influencing factor power;

[0120] The validity of the signal to be detected is determined based on the communication quality indicator.

[0121] Specifically, when the influencing factor power is noise power, the communication quality indicator is a signal-to-noise ratio;

[0122] In the case where the influencing factor power is interference noise power, the communication quality indicator is a signal to interference plus noise ratio.

[0123] In one possible implementation, when the signal power satisfies the first condition, the communication quality index is calculated based on the signal power and the corrected influencing factor power. When the communication quality index is greater than the detection threshold Snr_Threshold, the signal to be detected is determined to be a valid signal; when the communication quality index is less than or equal to the detection threshold Snr_Threshold, the signal to be detected is determined to be an invalid signal.

[0124] Optionally, for calculating the communication quality index based on the signal power and the corrected influencing factor power, the signal power may be a signal power that passes the first condition judgment, or the signal power may not pass the first condition judgment. The signal power may be a signal power that satisfies the first condition, or may be a signal power that does not satisfy the first condition.

[0125] The signal detection method provided in the embodiment of the present application corrects the power of the influencing factors, and calculates the communication quality index through the corrected power of the influencing factors, thereby avoiding the problem of signal misdetection when the power of the influencing factors fluctuates or the power of the influencing factors is too small, and improving the reliability of signal detection.

[0126] Optionally, the influencing factor power correction rule includes:

[0127] In a case where the influencing factor power is greater than a preset influencing factor power threshold, determining the influencing factor power to be the corrected influencing factor power;

[0128] In a case where the influencing factor power is not greater than a preset influencing factor power threshold, the preset influencing factor power value is determined to be the corrected influencing factor power.

[0129] Specifically, the influencing factor power threshold N_Threshold and the influencing factor power preset value Power_N0 are set. When the influencing factor power Power_N is greater than the influencing factor power threshold N_Threshold, the corrected influencing factor power adopts the original value of the influencing factor power Power_N, that is, the value of the influencing factor power Power_N remains unchanged before and after correction; when the influencing factor power Power_N is less than or equal to the influencing factor power threshold N_Threshold, the corrected influencing factor power adopts the influencing factor power preset value Power_N0, that is, the value of the influencing factor power Power_N changes before and after correction, and the influencing factor power preset value Power_N0 is adopted as the corrected influencing factor power.

[0130] Optionally, since the noise signal may be an irregular additional signal that does not exist in the original signal generated after passing through the device, the noise signal is related to the environment and does not change with the change of the signal to be detected. In addition, since the interference signal refers to the interference signal caused by the communication system itself and the foreign system, it does not change with the change of the signal to be detected. Therefore, the power threshold of the influencing factor can be a fixed value.

[0131] Optionally, the influencing factor power threshold is determined based on actual influencing conditions and simulation results.

[0132] Specifically, the power threshold N_Threshold value of the influencing factor is mainly used to prevent the noise value Power_N from being too low, causing the SNR to exceed the threshold S_Threshold value to generate false detection. In addition, the noise signal and the interference signal do not change with the change of the signal to be detected, so the power threshold N_Threshold value of the influencing factor can be determined according to the actual interference situation and simulation analysis.

[0133] Optionally, the preset value of the influencing factor power is determined based on an actual influencing situation and a simulation result.

[0134] Specifically, since the noise signal and the interference signal do not change with the change of the signal to be detected, the preset power value of the influencing factor can be determined by simulation and actual influencing conditions. Exemplarily, the preset power value of the influencing factor can be the minimum interference power value determined according to simulation and actual influencing conditions.

[0135] The signal detection method provided in the embodiment of the present application corrects the influencing factor power by comparing the influencing factor power with the influencing factor power threshold, thereby avoiding the problem of signal misdetection when the influencing factor power fluctuates or the influencing factor power is too small, thereby improving the reliability of signal detection.

[0136] The signal detection method provided by the present application is introduced below in combination with multiple embodiments:

[0137] To facilitate the introduction of the signal detection method provided in the embodiment of the present application, the following will be described:

[0138] The signal power is referred to as Power_S;

[0139] The influencing factor power is referred to as Power_N;

[0140] The influencing factor power threshold is referred to as N_Threshold;

[0141] The preset value of the influencing factor power is referred to as Power_N0;

[0142] The signal power threshold is referred to as S_Threshold;

[0143] The detection threshold (also called the communication quality index threshold) is referred to as Snr_Threshold.

[0144] Figure 3 This is a second flow chart of the signal detection method provided in the embodiment of the present application, such as Figure 3 As shown, the embodiment of the present application provides a signal detection method, including:

[0145] receiving a signal to be detected;

[0146] Calculate the signal power Power_S;

[0147] Set the signal power threshold S_Threshold for the signal power Power_S of the signal to be detected:

[0148] When Power_S>S_Threshold, perform the following steps:

[0149] Calculate the communication quality index, taking the signal-to-noise ratio as an example: SNR = Power_S / Power_N;

[0150] Compare the communication quality indicator with the communication quality indicator threshold:

[0151] When SNR>Snr_Threshold, the signal to be detected is determined to be a valid signal;

[0152] Otherwise, the signal to be detected is an invalid signal.

[0153] When Power_S≤S_Threshold, the signal to be detected is directly determined to be a valid signal.

[0154] In the signal detection process, the embodiment of the present application adds threshold judgment and processing of the calculated signal power Power_S, thereby reducing the false detection probability of signal detection and improving the reliability of signal detection.

[0155] Figure 4 This is a flow chart of the signal detection method provided in the embodiment of the present application. Figure 4 As shown, the embodiment of the present application provides a signal detection method, including:

[0156] receiving a signal to be detected;

[0157] Calculate the signal power Power_S;

[0158] The influencing factor power Power_N of the signal to be detected is set to have an influencing factor power threshold N_Threshold and an influencing factor power preset value Power_N0;

[0159] When Power_N>N_Threshold, Power_N remains unchanged, that is, the corrected influencing factor power is Power_N;

[0160] Calculate the communication quality index, taking the signal-to-noise ratio as an example: SNR = Power_S / Power_N;

[0161] Compare the communication quality indicator with the communication quality indicator threshold:

[0162] When SNR>Snr_Threshold, the signal to be detected is determined to be a valid signal;

[0163] Otherwise, the signal to be detected is an invalid signal.

[0164] When Power_N≤N_Threshold, let Power_N=Power_N0, that is, the corrected influencing factor power is Power_N0.

[0165] Calculate the communication quality index, taking the signal-to-noise ratio as an example: SNR = Power_S / Power_N0;

[0166] Compare the communication quality indicator with the communication quality indicator threshold:

[0167] When SNR>Snr_Threshold, the signal to be detected is determined to be a valid signal;

[0168] Otherwise, the signal to be detected is an invalid signal.

[0169] In the signal detection process, the embodiment of the present application adds a threshold judgment and processing of the influencing factor power Power_N, thereby reducing the false detection probability of signal detection and improving the reliability of signal detection.

[0170] Figure 5 FIG. 4 is a flow chart of the signal detection method provided in the embodiment of the present application. Figure 5 As shown, the embodiment of the present application provides a signal detection method, including:

[0171] receiving a signal to be detected;

[0172] Calculate the signal power Power_S;

[0173] Set the signal power threshold S_Threshold for the signal power Power_S of the signal to be detected:

[0174] When Power_S>S_Threshold, perform the following steps:

[0175] The influencing factor power Power_N of the signal to be detected is set to have an influencing factor power threshold N_Threshold and an influencing factor power preset value Power_N0;

[0176] When Power_N>N_Threshold, Power_N remains unchanged, that is, the corrected influencing factor power is Power_N;

[0177] Calculate the communication quality index, taking the signal-to-noise ratio as an example: SNR = Power_S / Power_N;

[0178] Compare the communication quality indicator with the communication quality indicator threshold:

[0179] When SNR>Snr_Threshold, the signal to be detected is determined to be a valid signal;

[0180] Otherwise, the signal to be detected is an invalid signal.

[0181] When Power_N≤N_Threshold, let Power_N=Power_N0, that is, the corrected influencing factor power is Power_N0.

[0182] Calculate the communication quality index, taking the signal-to-noise ratio as an example: SNR = Power_S / Power_N0;

[0183] Compare the communication quality indicator with the communication quality indicator threshold:

[0184] When SNR>Snr_Threshold, the signal to be detected is determined to be a valid signal;

[0185] Otherwise, the signal to be detected is an invalid signal.

[0186] When Power_S≤S_Threshold, the signal to be detected is directly determined to be a valid signal.

[0187] In the signal detection process, the embodiment of the present application adds threshold judgment and processing of the calculated signal power Power_S and the influencing factor power Power_N, thereby reducing the false detection probability of signal detection and improving the reliability of signal detection.

[0188] refer to Figure 6 , Figure 6 is a structural diagram of a signal detection device provided in an embodiment of the present application. An embodiment of the present application provides a signal detection device, the device comprising:

[0189] The detection unit 610 is configured to perform a corresponding operation to determine the validity of the signal to be detected according to whether the signal power of the signal to be detected meets a first condition; or

[0190] The influencing factor power of the signal to be detected is corrected according to an influencing factor power correction rule, and the validity of the signal to be detected is determined based on the signal power and the corrected influencing factor power, where the influencing factor power is noise power or interference noise power.

[0191] Optionally, performing a corresponding operation according to whether the signal power satisfies a first condition to determine the validity of the signal to be detected includes:

[0192] When the signal power does not satisfy the first condition, determining that the signal to be detected is an invalid signal; or

[0193] In a case where the signal power satisfies the first condition, the validity of the signal to be detected is determined based on the signal power and the influencing factor power.

[0194] Optionally, the determining the validity of the signal to be detected based on the signal power and the influencing factor power includes:

[0195] A communication quality index is calculated based on the signal power and the influencing factor power, and the validity of the signal to be detected is determined based on the communication quality index.

[0196] Optionally, determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power includes:

[0197] Calculating a communication quality index based on the signal power and the corrected influencing factor power;

[0198] The validity of the signal to be detected is determined based on the communication quality indicator.

[0199] Optionally, the influencing factor power correction rule includes:

[0200] In a case where the influencing factor power is greater than a preset influencing factor power threshold, determining the influencing factor power to be the corrected influencing factor power;

[0201] In a case where the influencing factor power is not greater than a preset influencing factor power threshold, the preset influencing factor power value is determined to be the corrected influencing factor power.

[0202] Optionally, the first condition is: the signal power is greater than a signal power threshold.

[0203] Optionally, the signal power threshold is determined by simulation results and historical signal power.

[0204] The methods and devices provided in each embodiment of the present application are based on the same application concept. Since the signal detection method and the signal detection device solve the problem in a similar manner and can achieve the same technical effect, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0205] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0206] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0207] Figure 7 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application, such as Figure 7 As shown, the electronic device includes a memory 720, a transceiver 700, and a processor 710, wherein:

[0208] The memory 720 is used to store computer programs; the transceiver 700 is used to send and receive data under the control of the processor 710; the processor 710 is used to read the computer program in the memory 720 and perform the following operations:

[0209] performing a corresponding operation to determine the validity of the signal to be detected according to whether the signal power of the signal to be detected meets the first condition; or

[0210] The influencing factor power of the signal to be detected is corrected according to an influencing factor power correction rule, and the validity of the signal to be detected is determined based on the signal power and the corrected influencing factor power, where the influencing factor power is noise power or interference noise power.

[0211] Among them, Figure 7In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 710 and memory represented by memory 720. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface 730 provides an interface. The transceiver 700 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, which transmission medium may include a wireless channel, a wired channel, an optical cable, and the like. The processor 710 is responsible for managing the bus architecture and general processing, and the memory 720 may store data used by the processor 710 when performing operations.

[0212] The processor 710 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0213] Optionally, performing a corresponding operation according to whether the signal power satisfies a first condition to determine the validity of the signal to be detected includes:

[0214] When the signal power does not satisfy the first condition, determining that the signal to be detected is an invalid signal; or

[0215] In a case where the signal power satisfies the first condition, the validity of the signal to be detected is determined based on the signal power and the influencing factor power.

[0216] Optionally, the determining the validity of the signal to be detected based on the signal power and the influencing factor power includes:

[0217] A communication quality index is calculated based on the signal power and the influencing factor power, and the validity of the signal to be detected is determined based on the communication quality index.

[0218] Optionally, determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power includes:

[0219] Calculating a communication quality index based on the signal power and the corrected influencing factor power;

[0220] The validity of the signal to be detected is determined based on the communication quality indicator.

[0221] Optionally, the influencing factor power correction rule includes:

[0222] In a case where the influencing factor power is greater than a preset influencing factor power threshold, determining the influencing factor power to be the corrected influencing factor power;

[0223] In a case where the influencing factor power is not greater than a preset influencing factor power threshold, the preset influencing factor power value is determined to be the corrected influencing factor power.

[0224] Optionally, the first condition is: the signal power is greater than a signal power threshold.

[0225] Optionally, the signal power threshold is determined by simulation results and historical signal power.

[0226] It should be noted here that the above-mentioned electronic device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned signal detection method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0227] In some embodiments, a processor-readable storage medium is also provided, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the signal detection method provided by the above-mentioned method embodiments.

[0228] Specifically, the processor-readable storage medium provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects that are the same as those in the method embodiments will not be described in detail herein.

[0229] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0230] In some embodiments, a non-transitory readable storage medium is also provided, wherein the non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the signal detection method provided by the above-mentioned method embodiments.

[0231] Specifically, the above-mentioned non-transitory readable storage medium provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects that are the same as the method embodiments in this embodiment will not be described in detail here.

[0232] The non-transitory readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0233] In some embodiments, a computer-readable storage medium is further provided, wherein the computer-readable storage medium stores a computer program, and the computer program is used to enable a computer to execute the signal detection method provided by the above-mentioned method embodiments.

[0234] Specifically, the above-mentioned computer-readable storage medium provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0235] In some embodiments, a communication device is further provided, wherein a computer program is stored in the communication device, and the computer program is used to enable the communication device to execute the signal detection method provided by the above-mentioned method embodiments.

[0236] Specifically, the above-mentioned communication device provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects that are the same as the method embodiments in this embodiment will not be described in detail here.

[0237] In some embodiments, a chip product is further provided, wherein a computer program is stored in the chip product, and the computer program is used to enable the chip product to execute the signal detection methods provided in the above-mentioned method embodiments.

[0238] Specifically, the above-mentioned chip product provided in the embodiment of the present application can implement all the method steps implemented by the above-mentioned method embodiments, and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as the method embodiment will not be described in detail here.

[0239] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0240] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0241] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0242] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0243] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A signal detection method, characterized in that: include: According to whether the signal power of the signal to be detected meets the first condition, performing a corresponding operation to determine the validity of the signal to be detected; or The influencing factor power of the signal to be detected is corrected according to an influencing factor power correction rule, and the validity of the signal to be detected is determined based on the signal power and the corrected influencing factor power, where the influencing factor power is noise power or interference noise power.

2. The signal detection method according to claim 1, characterized in that: The performing a corresponding operation according to whether the signal power satisfies a first condition to determine the validity of the signal to be detected includes: When the signal power does not satisfy the first condition, determining that the signal to be detected is an invalid signal; or In a case where the signal power satisfies the first condition, the validity of the signal to be detected is determined based on the signal power and the influencing factor power.

3. The signal detection method according to claim 2, characterized in that: The determining, based on the signal power and the influencing factor power, the validity of the signal to be detected includes: A communication quality index is calculated based on the signal power and the influencing factor power, and the validity of the signal to be detected is determined based on the communication quality index.

4. The signal detection method according to claim 1, characterized in that: The determining the validity of the signal to be detected based on the signal power and the corrected influencing factor power includes: Calculating a communication quality index based on the signal power and the corrected influencing factor power; The validity of the signal to be detected is determined based on the communication quality indicator.

5. The signal detection method according to any one of claims 1 to 4, characterized in that: The power correction rules of the influencing factors include: In a case where the influencing factor power is greater than a preset influencing factor power threshold, determining the influencing factor power to be the corrected influencing factor power; In a case where the influencing factor power is not greater than a preset influencing factor power threshold, the preset influencing factor power value is determined to be the corrected influencing factor power.

6. The signal detection method according to any one of claims 1 to 3, characterized in that: The first condition is: the signal power is greater than a signal power threshold.

7. The signal detection method according to claim 6, characterized in that: The signal power threshold is determined by simulation results and historical signal power.

8. A signal detection device, characterized in that: include: A detection unit, configured to perform a corresponding operation to determine the validity of the signal to be detected according to whether the signal power of the signal to be detected meets a first condition; or The influencing factor power of the signal to be detected is corrected according to an influencing factor power correction rule, and the validity of the signal to be detected is determined based on the signal power and the corrected influencing factor power, where the influencing factor power is noise power or interference noise power.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the signal detection method according to any one of claims 1 to 7 is implemented.

10. A non-transitory readable storage medium, characterized in that: The non-transitory readable storage medium stores a computer program, and the computer program is used to enable a processor to execute the signal detection method according to any one of claims 1 to 7.

Images