CN111953452A

CN111953452A - Method and device for detecting SSB serial number

Info

Publication number: CN111953452A
Application number: CN202010804352.8A
Authority: CN
Inventors: 刘君
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-11-17

Abstract

The application discloses a method and a device for detecting SSB serial numbers, which are applied to electronic equipment, wherein the method comprises the following steps: receiving frequency domain signals of i SSBs; splitting a 3 rd symbol of a first SSB into a first symbol and a second symbol, the first symbol comprising a demodulation-specific reference signal (DMRS), the second symbol comprising a Secondary Synchronization Signal (SSS), the i SSBs comprising the first SSB; calculating a first time domain signal and a second time domain signal, wherein the first time domain signal is the time domain signal of the first symbol, and the second time domain signal is the time domain signal of the second symbol; determining a first Power Delay Profile (PDP) based on the first time domain signal and the second time domain signal, the first PDP being a maximum PDP of the first SSB; and under the condition that the first PDP meets a preset condition, determining the sequence number of the first SSB as the sequence number of the target SSB. The method and the device can effectively improve the performance of detecting the SSB serial number in a low signal-to-noise ratio scene.

Description

Method and device for detecting SSB serial number

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for detecting an SSB serial number.

Background

In a 5th Generation cellular mobile communication system (5G, also referred to as New Radio, New air interface, or NR for short), a concept of a Synchronization Signal Block (SSB) is introduced, a maximum number of SSBs in one SSB period is 64, and a scrambling sequence of a Demodulation dedicated reference Signal (DMRS) of a Physical Broadcast Channel (PBCH) is determined by low 3 bits of the SSB sequence number, but the SSB sequence number is unknown before PBCH DMRS channel estimation is performed, so that low 3-bit information of the SSB sequence number needs to be blind-detected according to the PBCH DMRS.

Currently, detecting SSB serial numbers is mainly divided into a frequency domain scheme and a time domain scheme, where the time domain scheme is to convert an LS estimation result to a time domain to calculate a Power Delay Profile (PDP) and find a maximum path of the PDP. In the time domain scheme, the SSB sequence number detection performance in a low signal-to-noise ratio scenario is greatly affected by noise, and the SSB sequence number detection performance deteriorates more severely.

Disclosure of Invention

The embodiment of the application provides a method and a device for detecting an SSB serial number, which can effectively improve the performance of detecting the SSB serial number in a low signal-to-noise ratio scene.

In a first aspect, an embodiment of the present application provides a method for detecting an SSB serial number, which is applied to an electronic device, and the method includes:

receiving frequency domain signals of i synchronous signal blocks SSB, wherein i is a positive integer greater than 1;

splitting a 3 rd symbol of a first SSB into a first symbol and a second symbol, the first symbol comprising a demodulation-specific reference signal (DMRS), the second symbol comprising a Secondary Synchronization Signal (SSS), the i SSBs comprising the first SSB;

calculating a first time domain signal and a second time domain signal, wherein the first time domain signal is the time domain signal of the first symbol, and the second time domain signal is the time domain signal of the second symbol;

determining a first Power Delay Profile (PDP) based on the first time domain signal and the second time domain signal, the first PDP being a maximum PDP of the first SSB;

and under the condition that the first PDP meets a preset condition, determining the sequence number of the first SSB as the sequence number of the target SSB.

In a second aspect, an embodiment of the present application provides an apparatus for detecting an SSB serial number, where the apparatus is applied to an electronic device, and the apparatus includes:

a receiving unit, configured to receive frequency domain signals of i synchronization signal blocks SSB, where i is a positive integer greater than 1;

a splitting unit, configured to split a 3 rd symbol of a first SSB into a first symbol and a second symbol, where the first symbol includes a demodulation-specific reference signal (DMRS), the second symbol includes a Secondary Synchronization Signal (SSS), and the i SSBs include the first SSB;

a calculating unit, configured to calculate a first time domain signal and a second time domain signal, where the first time domain signal is a time domain signal of the first symbol, and the second time domain signal is a time domain signal of the second symbol;

a determining unit, configured to determine a first power delay profile PDP based on the first time domain signal and the second time domain signal, where the first PDP is a maximum PDP of the first SSB;

and the determining unit is further configured to determine that the sequence number of the first SSB is the sequence number of the target SSB when the first PDP satisfies a preset condition.

In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, a communication interface, and one or more programs, where the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing steps in any method of the first aspect of the embodiment of the present application.

In a fourth aspect, the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program for electronic data exchange, where the computer program makes a computer perform part or all of the steps described in any one of the methods of the first aspect of the present application.

In a fifth aspect, the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform some or all of the steps as described in any one of the methods of the first aspect of the embodiments of the present application. The computer program product may be a software installation package.

It can be seen that, in the embodiment of the present application, the electronic device receives frequency domain signals of i SSBs; splitting a 3 rd symbol of a first SSB into a first symbol and a second symbol, the first symbol comprising a demodulation-specific reference signal (DMRS), the second symbol comprising a Secondary Synchronization Signal (SSS), the i SSBs comprising the first SSB; calculating a first time domain signal and a second time domain signal, wherein the first time domain signal is the time domain signal of the first symbol, and the second time domain signal is the time domain signal of the second symbol; determining a first Power Delay Profile (PDP) based on the first time domain signal and the second time domain signal, the first PDP being a maximum PDP of the first SSB; and under the condition that the first PDP meets the preset condition, determining the sequence number of the first SSB as the sequence number of the target SSB, so that the performance of detecting the SSB sequence number can be effectively improved under the scene of low signal-to-noise ratio.

Drawings

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

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a software structure of an electronic device according to an embodiment of the present application;

fig. 3 is a schematic view of an application scenario of a method for detecting an SSB serial number according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a method for detecting an SSB serial number according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of an SSB provided in an embodiment of the present application;

FIG. 6 is a schematic flow chart of another method for detecting SSB serial numbers according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of another exemplary method for detecting SSB serial numbers according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of an apparatus for detecting an SSB serial number according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

In order to better understand the scheme of the embodiments of the present application, the following first introduces the related terms and concepts that may be involved in the embodiments of the present application.

1) The electronic device may be a portable electronic device, such as a cell phone, a tablet computer, a wearable electronic device with wireless communication capabilities (e.g., a smart watch), etc., that also contains other functionality, such as personal digital assistant and/or music player functionality. Exemplary embodiments of the portable electronic device include, but are not limited to, portable electronic devices that carry an IOS system, an Android system, a Microsoft system, or other operating system. The portable electronic device may also be other portable electronic devices such as a Laptop computer (Laptop) or the like. It should also be understood that in other embodiments, the electronic device may not be a portable electronic device, but may be a desktop computer.

2) The LS channel estimation applies the criterion of the least square sum of errors to estimate the impulse response of the channel, and the LS estimation result is formed by h_LS＝X¹y_mDenotes that X is the steering vector of the setting, ()¹Representing the inverse of the matrix, y_mIs the received pilot vector.

In a first section, the software and hardware operating environment of the technical solution disclosed in the present application is described as follows.

Fig. 1 shows a schematic structural diagram of an electronic device 100. The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a Universal Serial Bus (USB) interface 130, a charge management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a compass 190, a motor 191, a pointer 192, a camera 193, a display screen 194, a Subscriber Identification Module (SIM) card interface 195, and the like.

It is to be understood that the illustrated structure of the embodiment of the present application does not specifically limit the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units, such as: the processor 110 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. Wherein the different processing units may be separate components or may be integrated in one or more processors. In some embodiments, the electronic device 101 may also include one or more processors 110. The controller can generate an operation control signal according to the instruction operation code and the time sequence signal to complete the control of instruction fetching and instruction execution. In other embodiments, a memory may also be provided in processor 110 for storing instructions and data. Illustratively, the memory in the processor 110 may be a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. This avoids repeated accesses and reduces the latency of the processor 110, thereby increasing the efficiency with which the electronic device 101 processes data or executes instructions.

In some embodiments, processor 110 may include one or more interfaces. The interface may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a SIM card interface, a USB interface, and/or the like. The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the electronic device 101, and may also be used to transmit data between the electronic device 101 and peripheral devices. The USB interface 130 may also be used to connect to a headset to play audio through the headset.

It should be understood that the interface connection relationship between the modules illustrated in the embodiments of the present application is only an illustration, and does not limit the structure of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments.

The charging management module 140 is configured to receive charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from a wired charger via the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive a wireless charging input through a wireless charging coil of the electronic device 100. The charging management module 140 may also supply power to the electronic device through the power management module 141 while charging the battery 142.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140, and supplies power to the processor 110, the internal memory 121, the external memory, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In some other embodiments, the power management module 141 may also be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be disposed in the same device.

The wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 100 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution including 2G/3G/4G/5G wireless communication applied to the electronic device 100. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 150 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 150 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the same device as at least some of the modules of the processor 110.

The wireless communication module 160 may provide a solution for wireless communication applied to the electronic device 100, including Wireless Local Area Networks (WLANs) (such as wireless fidelity (Wi-Fi) networks), bluetooth (bluetooth), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), UWB, and the like. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, perform frequency modulation and amplification on the signal, and convert the signal into electromagnetic waves through the antenna 2 to radiate the electromagnetic waves.

The electronic device 100 implements display functions via the GPU, the display screen 194, and the application processor. The GPU is a microprocessor for image processing, and is connected to the display screen 194 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 194 is used to display images, videos, and the like. The display screen 194 includes a display panel. The display panel may be a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a mini light-emitting diode (mini-light-emitting diode, mini), a Micro, a quantum dot light-emitting diode (QLED), or the like. In some embodiments, the electronic device 100 may include 1 or more display screens 194.

The electronic device 100 may implement a photographing function through the ISP, the camera 193, the video codec, the GPU, the display screen 194, the application processor, and the like.

The ISP is used to process the data fed back by the camera 193. For example, when a photo is taken, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converting into an image visible to naked eyes. The ISP can also carry out algorithm optimization on the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The light sensing element converts the optical signal into an electrical signal, which is then passed to the ISP where it is converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats. In some embodiments, the electronic device 100 may include 1 or more cameras 193.

The digital signal processor is used for processing digital signals, and can process digital image signals and other digital signals. For example, when the electronic device 100 selects a frequency bin, the digital signal processor is used to perform fourier transform or the like on the frequency bin energy.

Video codecs are used to compress or decompress digital video. The electronic device 100 may support one or more video codecs. In this way, the electronic device 100 may play or record video in a variety of encoding formats, such as: moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, and the like.

The NPU is a neural-network (NN) computing processor that processes input information quickly by using a biological neural network structure, for example, by using a transfer mode between neurons of a human brain, and can also learn by itself continuously. Applications such as intelligent recognition of the electronic device 100 can be realized through the NPU, for example: image recognition, face recognition, speech recognition, text understanding, and the like.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to extend the memory capability of the electronic device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function. For example, files such as music, video, etc. are saved in an external memory card.

Internal memory 121 may be used to store one or more computer programs, including instructions. The processor 110 may execute the above-mentioned instructions stored in the internal memory 121, so as to enable the electronic device 101 to execute the method for displaying page elements provided in some embodiments of the present application, and various applications and data processing. The internal memory 121 may include a program storage area and a data storage area. Wherein, the storage program area can store an operating system; the storage program area may also store one or more applications (e.g., gallery, contacts, etc.), and the like. The storage data area may store data (such as photos, contacts, etc.) created during use of the electronic device 101, and the like. Further, the internal memory 121 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic disk storage components, flash memory components, Universal Flash Storage (UFS), and the like. In some embodiments, the processor 110 may cause the electronic device 101 to execute the method for displaying page elements provided in the embodiments of the present application, and other applications and data processing by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor 110. The electronic device 100 may implement audio functions through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the earphone interface 170D, and the application processor, etc. Such as music playing, recording, etc.

The sensor module 180 may include a pressure sensor 180A, a gyro sensor 180B, an air pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, a bone conduction sensor 180M, and the like.

The pressure sensor 180A is used for sensing a pressure signal, and converting the pressure signal into an electrical signal. In some embodiments, the pressure sensor 180A may be disposed on the display screen 194. The pressure sensor 180A can be of a wide variety, such as a resistive pressure sensor, an inductive pressure sensor, a capacitive pressure sensor, and the like. The capacitive pressure sensor may be a sensor comprising at least two parallel plates having an electrically conductive material. When a force acts on the pressure sensor 180A, the capacitance between the electrodes changes. The electronic device 100 determines the strength of the pressure from the change in capacitance. When a touch operation is applied to the display screen 194, the electronic apparatus 100 detects the intensity of the touch operation according to the pressure sensor 180A. The electronic apparatus 100 may also calculate the touched position from the detection signal of the pressure sensor 180A. In some embodiments, the touch operations that are applied to the same touch position but different touch operation intensities may correspond to different operation instructions. For example: and when the touch operation with the touch operation intensity smaller than the first pressure threshold value acts on the short message application icon, executing an instruction for viewing the short message. And when the touch operation with the touch operation intensity larger than or equal to the first pressure threshold value acts on the short message application icon, executing an instruction of newly building the short message.

The gyro sensor 180B may be used to determine the motion attitude of the electronic device 100. In some embodiments, the angular velocity of electronic device 100 about three axes (i.e., X, Y and the Z axis) may be determined by gyroscope sensor 180B. The gyro sensor 180B may be used for photographing anti-shake. For example, when the shutter is pressed, the gyro sensor 180B detects a shake angle of the electronic device 100, calculates a distance to be compensated for by the lens module according to the shake angle, and allows the lens to counteract the shake of the electronic device 100 through a reverse movement, thereby achieving anti-shake. The gyroscope sensor 180B may also be used for navigation, somatosensory gaming scenes.

The acceleration sensor 180E may detect the magnitude of acceleration of the electronic device 100 in various directions (typically three axes). The magnitude and direction of gravity can be detected when the electronic device 100 is stationary. The method can also be used for recognizing the posture of the electronic equipment, and is applied to horizontal and vertical screen switching, pedometers and other applications.

The ambient light sensor 180L is used to sense the ambient light level. Electronic device 100 may adaptively adjust the brightness of display screen 194 based on the perceived ambient light level. The ambient light sensor 180L may also be used to automatically adjust the white balance when taking a picture. The ambient light sensor 180L may also cooperate with the proximity light sensor 180G to detect whether the electronic device 100 is in a pocket to prevent accidental touches.

The fingerprint sensor 180H is used to collect a fingerprint. The electronic device 100 can utilize the collected fingerprint characteristics to unlock the fingerprint, access the application lock, photograph the fingerprint, answer an incoming call with the fingerprint, and so on.

The temperature sensor 180J is used to detect temperature. In some embodiments, electronic device 100 implements a temperature processing strategy using the temperature detected by temperature sensor 180J. For example, when the temperature reported by the temperature sensor 180J exceeds a threshold, the electronic device 100 performs a reduction in performance of a processor located near the temperature sensor 180J, so as to reduce power consumption and implement thermal protection. In other embodiments, the electronic device 100 heats the battery 142 when the temperature is below another threshold to avoid the low temperature causing the electronic device 100 to shut down abnormally. In other embodiments, when the temperature is lower than a further threshold, the electronic device 100 performs boosting on the output voltage of the battery 142 to avoid abnormal shutdown due to low temperature.

The touch sensor 180K is also referred to as a "touch panel". The touch sensor 180K may be disposed on the display screen 194, and the touch sensor 180K and the display screen 194 form a touch screen, which is also called a "touch screen". The touch sensor 180K is used to detect a touch operation applied thereto or nearby. The touch sensor can communicate the detected touch operation to the application processor to determine the touch event type. Visual output associated with the touch operation may be provided through the display screen 194. In other embodiments, the touch sensor 180K may be disposed on a surface of the electronic device 100, different from the position of the display screen 194.

Fig. 2 shows a block diagram of a software structure of the electronic device 100. The layered architecture divides the software into several layers, each layer having a clear role and division of labor. The layers communicate with each other through a software interface. In some embodiments, the Android system is divided into four layers, an application layer, an application framework layer, an Android runtime (Android runtime) and system library, and a kernel layer from top to bottom. The application layer may include a series of application packages.

As shown in fig. 2, the application layer may include applications such as camera, gallery, calendar, phone call, map, navigation, WLAN, bluetooth, music, video, short message, etc.

The application framework layer provides an Application Programming Interface (API) and a programming framework for the application program of the application layer. The application framework layer includes a number of predefined functions.

As shown in FIG. 2, the application framework layers may include a window manager, content provider, view system, phone manager, resource manager, notification manager, and the like.

The window manager is used for managing window programs. The window manager can obtain the size of the display screen, judge whether a status bar exists, lock the screen, intercept the screen and the like.

The content provider is used to store and retrieve data and make it accessible to applications. The data may include video, images, audio, calls made and received, browsing history and bookmarks, phone books, etc.

The view system includes visual controls such as controls to display text, controls to display pictures, and the like. The view system may be used to build applications. The display interface may be composed of one or more views. For example, the display interface including the short message notification icon may include a view for displaying text and a view for displaying pictures.

The phone manager is used to provide communication functions of the electronic device 100. Such as management of call status (including on, off, etc.).

The resource manager provides various resources for the application, such as localized strings, icons, pictures, layout files, video files, and the like.

The notification manager enables the application to display notification information in the status bar, can be used to convey notification-type messages, can disappear automatically after a short dwell, and does not require user interaction. Such as a notification manager used to inform download completion, message alerts, etc. The notification manager may also be a notification that appears in the form of a chart or scroll bar text at the top status bar of the system, such as a notification of a background running application, or a notification that appears on the screen in the form of a dialog window. For example, prompting text information in the status bar, sounding a prompt tone, vibrating the electronic device, flashing an indicator light, etc.

The Android Runtime comprises a core library and a virtual machine. The Android runtime is responsible for scheduling and managing an Android system.

The core library comprises two parts: one part is a function which needs to be called by java language, and the other part is a core library of android.

The application layer and the application framework layer run in a virtual machine. And executing java files of the application program layer and the application program framework layer into a binary file by the virtual machine. The virtual machine is used for performing the functions of object life cycle management, stack management, thread management, safety and exception management, garbage collection and the like.

The system library may include a plurality of functional modules. For example: surface managers (surface managers), media libraries (media libraries), three-dimensional graphics processing libraries (e.g., OpenGL ES), 2D graphics engines (e.g., SGL), and the like.

The surface manager is used to manage the display subsystem and provide fusion of 2D and 3D layers for multiple applications.

The media library supports a variety of commonly used audio, video format playback and recording, and still image files, among others. The media library may support a variety of audio-video encoding formats, such as: MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, etc.

The three-dimensional graphic processing library is used for realizing three-dimensional graphic drawing, image rendering, synthesis, layer processing and the like.

The 2D graphics engine is a drawing engine for 2D drawing.

The kernel layer is a layer between hardware and software. The inner core layer at least comprises a display driver, a camera driver, an audio driver and a sensor driver.

In a second section, example application scenarios disclosed in embodiments of the present application are described below.

Referring to fig. 3, fig. 3 is a schematic view of an application scenario of a method for detecting an SSB serial number according to an embodiment of the present application. As shown in fig. 3, the scenario includes a network device and a terminal device. The network device may communicate with the terminal device through wireless communication. In the process of communicating with the terminal device, the network device needs to send an SSB to the terminal device, so that the terminal device achieves frequency and symbol synchronization with a downlink synchronization channel of a Cell, obtains a starting position of a downlink in-line signal frame, and determines a Physical Cell Identity (PCI) of the Cell by detecting the SSB. The form and number of the network devices and the terminal devices shown in fig. 3 are only for example and do not constitute a limitation to the embodiments of the present application.

In the third section, the scope of protection of the claims disclosed in the embodiments of the present application is described below.

Referring to fig. 4, fig. 4 is a flowchart illustrating a method for detecting an SSB serial number according to an embodiment of the present application, which is applied to an electronic device.

S410, receiving frequency domain signals of i synchronous signal blocks SSB, wherein i is a positive integer larger than 1.

The SSBs may also be referred to as SS/PBCH Block, one SSB occupies 4 OFDM symbols in the time domain, and occupies 20 Resource blocks ((Resource Block, RB) in the frequency domain, each SSB corresponds to a different beam or a different beam direction, and the position of the SSB in the search window is related to a Sub-Carrier Space (SCS) and the number L of beams.

As shown in fig. 5, the SSB is composed of three parts, namely Primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS), and a PBCH, and each RB of the PBCH has 3 DMRSs. After receiving the SSB, the electronic device may obtain timing information, a cell ID, time position of PBCH, and other information according to the PSS and the SSS, may obtain the low three bits of the SSB according to the PBCH DMRS, and may determine a scrambling sequence using the low three bits of the SSB and the cell ID, thereby performing descrambling.

In this embodiment, the electronic device may continuously receive frequency domain signals of i SSBs, and the first symbol of each SSB may not be received, i.e., may not accept the PSS in the SSB.

Optionally, the i SSB sequence numbers include SSBs in the first cycle and/or SSBs in the second cycle.

Wherein, in the low snr scenario, the number of SSBs in one SSB period is 8. The electronic device may continuously receive SSBs in the same SSB period to detect the serial number of the SSB, or may continuously receive SSBs in different SSB periods but with the same cell ID to detect the serial number of the SSB, which is not limited in this embodiment of the present application.

S420, splitting the 3 rd symbol of the first SSB into a first symbol and a second symbol, wherein the first symbol comprises a demodulation-dedicated reference signal (DMRS), the second symbol comprises a Secondary Synchronization Signal (SSS), and the i SSBs comprise the first SSB.

After receiving the frequency domain signals of the i SSBs, the PDP of the DMRS spectrum position in each SSB may be calculated. As shown in fig. 5, PBCH is located in the first 4 RBs and the last 4 RBs of the 3 rd symbol of the SSB, SSS is located in the middle 12 RBs of the 3 rd symbol, DMRS is included in the PBCH, the location of the DMRS of the PBCH is located in the SSB frequency domain, k is_DMRS4 q + cell _ id% 4, q 0,1,2, …, 11,48,49, … 59, cell _ id is cell id. However, the calculation of the SSS channel impulse response is not affected by the SSB sequence number, so when calculating the PDP of the DMRS spectrum position of the 3 rd symbol in the SSB, the 3 rd symbol may be split into two symbols with the same length, i.e., a first symbol and a second symbol, as shown in fig. 5, the first symbol includes portions of the first 4 RBs and the last 4 RB of the 3 rd symbol, and does not include the SSS portion, and the second symbol includes portions of the middle 12 RBs of the 3 rd symbol, and includes only the SSS portion.

S430, calculating a first time domain signal and a second time domain signal, where the first time domain signal is the time domain signal of the first symbol, and the second time domain signal is the time domain signal of the second symbol.

Optionally, the calculating the first time-domain signal includes: extracting a first frequency-domain signal from the frequency-domain signals of the first SSB, the first frequency-domain signal being a frequency-domain signal of a first position in the first symbol; performing channel estimation on the first frequency domain signal to obtain a first estimation result; determining a fourth estimation result based on a second estimation result and a third estimation result, where the second estimation result is an estimation result of a second frequency domain signal, the second frequency domain signal is a frequency domain signal of a second position of the 2 nd symbol of the first SSB, the third estimation result is an estimation result of a third frequency domain position, and the third frequency domain signal is a frequency domain signal of a second position of the 4 th symbol of the first SSB; determining the first time domain signal based on the first estimation result and the fourth estimation result.

When the first time domain signal is calculated, the first symbol may be calculated by dividing the first symbol into the first 4 RBs and the last 4 RBs of the first symbol, that is, the first symbol includes the PBCH, and the second symbol includes the middle 12 RBs of the second symbol.

Specifically, for the first part, the frequency domain signal Y of the first position may be extracted from the frequency domain signal of the first SSB₁(p,3,k_DMRS) I.e., the first frequency domain signal, the first position may be the first 4 RBs and the last 4 RBs of the 3 rd symbol, i.e., the 0-47, 192-239 subcarriers in the 3 rd symbol. Then, for the frequency domain signal Y (p, l, k) of the first position_DMRS) Performing LS channel estimation to obtain a first estimation result H₁(p,3,k_DMRS) P is the corresponding receiving antenna id, l is the OFDM symbol corresponding to SSB, and the value is 0-3. For the second part, the estimation result of the current SSS data part may be replaced by the average of the estimation results of the corresponding positions in the frequency domain of the symbol 2 and the symbol 4, that is, the estimation result H of the frequency domain signal of the second position of the 2 nd symbol in the first SSB is used₂(p,2,k_DMRS) (second estimation result) and the estimation result H of the frequency domain signal of the second position of the 4 th symbol in the first SSB₂(p,4,k_DMRS) (third estimation result) as a fourth estimation result, the second position is the middle 12 RBs of the 3 rd symbol, i.e. 48-191 th subcarriers in the 3 rd symbol, and the fourth estimation result can be expressed as: h₂(p,3,k_DMRS)＝(H₂(p,2,k_DMRS)+H₂(p,4,k_DMRS) 2, q ═ 12,13, …, 47. Finally, the first estimation result H is obtained₁(p,3,k_DMRS) And fourth estimation result H₂(p,3,k_DMRS) The sum of (a) and (b) is subjected to IFFT operation, and transformed into the time domain to obtain the first time domain signal h (p,3, k), k being 0,1, …, 127.

Optionally, the performing channel estimation on the first frequency domain signal to obtain a first estimation result includes: generating a sending signal corresponding to a first frequency domain signal based on a cell ID and the sequence number of the first SSB; calculating the first estimation result based on the transmission signal and the first frequency domain signal.

Specifically, a DMRS sequence x (k) may be generated based on a cell ID and a sequence number of the first SSB sequence number, where the DMRS sequence x (k) may be represented as:

the pseudo-random sequence c (k) can be expressed as: c (k) 2¹¹(i_SSB+1)*cell_id％4+2⁶(i_SBB+1)+(cell_idmod4)，i_SBBThe significant bits of the 3 lowest bits representing the SSB sequence number. DMRS transmission signal X (k) for changing DMRS sequence X (k) to frequency domain_DMRS) Then using the transmission signal X (k)_DMRS) And said first frequency domain signal Y₁(p,3,k_DMRS) Calculating an LS channel estimation result H of the DMRS of the first position in the 3 rd symbol of the first SSB by using an LS method₁(p,3,k_DMRS) Q is 0,1,2, …, 11,48,49, … 59, i.e., the first estimation result.

Optionally, the calculating the second time-domain signal includes: performing channel estimation on the second frequency domain signal to obtain a third estimation result; determining the second time domain signal based on the third estimation result.

Specifically, after receiving the first SSB, the frequency-domain signal Y (p, m) of the SSS in the second symbol may be extracted from the frequency-domain signal of the first SSB_SSS)，m_SSSFor the frequency domain position of SSS in the second symbol, then SSS sequence X (m) is generated based on cell ID, DMRS sequence X (m) is changed to DMRS of frequency domain, and signal X (m) is transmitted_SSS) Then using the transmission signal X (m)_SSS) And frequency domain signal Y (p, m) of SSS in the second symbol_SSS) Calculating the estimation result H (p, m) of SSS in the second symbol by using LS method_SSS). Finally, H (p, m)_SSS) IFFF operation is carried out, the IFFF operation is changed from a frequency domain to a time domain, and the second time domain signal h is obtained_SSS(m)。

In a possible embodiment, the method further comprises: and calculating a third time domain signal, wherein the third time domain signal is a time domain signal of the third frequency domain signal, and the third frequency domain signal is a frequency domain signal of the DMRS in the 2 nd symbol and the 4 th symbol of the first SSB.

Wherein, the 2 nd symbol and the fourth symbol of each SSB comprise PBCH, the position of PBCH DMRS is set as SSB frequency domain position, k_DMRS4 q + cell _ id% 4, q 0,1,2, …, 59. The electronic device may directly extract the DMRS in the 2 nd and fourth symbols of the SSB to calculate the third time-domain signal.

Optionally, the calculating a third time domain signal includes; performing LS channel estimation on the third frequency domain signal to obtain a sixth estimation result; and performing IFFT operation on the sixth estimation result to obtain the third time domain signal.

Specifically, after receiving the first SSB, the frequency domain signal Y (p,2, k) of the DMRS in the 2 nd symbol and the 4 th symbol may be extracted from the frequency domain signal of the first SSB_DMRS) And Y (p,4, k)_DMRS) And then generating a DMRS sequence x (k) based on the cell ID and the sequence number of the first SSB sequence number, wherein the DMRS sequence x (k) can be expressed as:

k is 0,1, …, 127, and the pseudorandom sequence c (k) may be represented as: c (k) 2¹¹(i_SSB+1)*cell_id％4+2⁶(i_SBB+1)+(cell_idmod4)，i_SBBThe significant bits of the 3 lowest bits representing the SSB sequence number. DMRS transmission signal X (k) for changing DMRS sequence X (k) to frequency domain_DMRS) Then using the transmission signal X (k)_DMRS) And the 2 nd symbol of the first SSB_DMRS) Calculating the estimation result H (p,2, k) of DMRS in the 2 nd symbol of the first SSB using LS method_DMRS) Q is 0,1,2, …, 11,48,49, …; using transmission signals X (k)_DMRS) And the frequency domain signal Y (p,4, k) of the 4 th symbol of the first SSB_DMRS) Calculating the estimation result H (p,4, k) of DMRS in the 4 th symbol of the first SSB using LS method_DMRS) Q is 0,1,2, …, 11,48,49, …; estimation result H (p,2, k) of DMRS in 2 nd symbol of the first SSB_DMRS) And the estimation result H (p,4, k) of DMRS in the 4 th symbol of the first SSB_DMRS) The sum is the sixth estimation result. Finally, H (p,2, k)_DMRS) And H (p,4, k)_DMRS) The IFFF operation is performed to change from the frequency domain to the time domain, and the third time domain signal h (p, l, k) is obtained, where l is 2,4, and k is 0,1, …, and 127.

S440, determining a first power delay profile PDP based on the first time domain signal and the second time domain signal, wherein the first PDP is the maximum PDP of the first SSB.

Optionally, the determining a first power delay profile PDP based on the first time domain signal and the second time domain signal includes:

performing intersymbol combination on the first time domain signal and the third time domain signal to obtain a fourth time domain signal; MRC combining is carried out on the fourth time domain signals on a plurality of antennas to obtain the first sequence; MRC combining is carried out on the second time domain signals on the multiple antennas to obtain a second sequence; determining a third sequence from the first sequence based on the second sequence; calculating the first PDP of the third sequence.

When receiving the frequency domain signal of the SSB, it is necessary to calculate the PDP of the SSB from the time domain signal of the DMRS in the SSB. Therefore, the first time domain signal and the third time domain signal are inter-symbol combined, that is, the channel impulse responses of the DMRS in the 2 nd symbol, the 3 rd symbol and the 4 th symbol in the first SSB are superimposed. The inter-symbol combining may be expressed as superimposing the channel impulse responses in the time domain, for example, h (p,2, k), h (p,3, k), and h (p,4, k) are combined inter-symbol, and assuming that h (p,2,1) is 1, h (p,3,1) is 0, and h (p,4,1) is 1, then h (p,1) is 2 after inter-symbol combining. A fourth time-domain signal h (p, k) may be obtained by inter-symbol combining the first time-domain signal and the third time-domain signal, where k is 0,1, …, 127.

The electronic device may include multiple antennas, and when the base station sends the SSB to the electronic device, the multiple antennas on the electronic device may all receive the SSB. Therefore, after the SSBs received by each antenna are inter-symbol combined, Maximum Ratio Combining (MRC) may be performed on the SSBs received by multiple antennas, where MRC is to perform signal Combining by multiplying different coefficients to fourth time domain signals h (p, k) on multiple antennas, so as to obtain a first sequence h (k), the determination of the coefficients is related to fading coefficients of multiple antennas, and MRC is an optimal selection MRC in the diversity Combining technology, so as to obtain a maximum signal-to-noise Ratio, thereby improving the performance of detecting the SSB sequence number.

Further, the second time domain signal exists only in the second symbol of the 3 rd symbol of the SSB, so the MRC can be directly performed on the second time domain signal to obtain the second sequence h_SSS(m) then according to a second sequence h_SSS(m) indicates an effective path position of the first sequence, which may refer to a position where a peak in the first sequence is larger, and determines a sequence of a third position of the first sequence h (k) as a third sequence, that is, a time domain position corresponding to a middle 12RB of a 3 rd symbol in a frequency domain in the first sequence as the third sequence. Finally, calculating the Power Delay Profile (PDP) of the third sequence, wherein the PDP describes the dispersion of the channel in time, and is the expectation of the frequency domain signal power at a certain delay, P (tau) ═ E [ | h (t, tau) & gt²]。

S450, determining the sequence number of the first SSB as the sequence number of the target SSB under the condition that the first PDP meets the preset condition.

Optionally, the first PDP satisfies a preset condition, including: the first PDP is larger than a second PDP, and the second PDP is a PDP of any SSB of the i SSBs except the first SSB.

After calculating the PDP of the first SSB, i.e., the first PDP, the PDPs of the other received SSBs may be sequentially calculated, the PDP values of the i SSBs are compared, and the sequence number of the SSB corresponding to the largest PDP value is determined as the sequence number of the target SSB, i.e., when the first PDP is larger than the second PDP, the sequence number of the first SSB is determined as the sequence number of the target SSB.

Referring to fig. 6, fig. 6 is a schematic flowchart of another method for detecting an SSB serial number according to an embodiment of the present disclosure, and the method is applied to an electronic device. As shown in fig. 6, the method for detecting the SSB serial number includes the following operations.

S610, receiving frequency domain signals of i synchronous signal blocks SSB, wherein i is a positive integer larger than 1.

S620, splitting the 3 rd symbol of the first SSB into a first symbol and a second symbol, wherein the first symbol comprises a demodulation-dedicated reference signal (DMRS), the second symbol comprises a Secondary Synchronization Signal (SSS), and the i SSBs comprise the first SSB.

S630, calculating a first time domain signal, a second time domain signal and a third time domain signal, wherein the first time domain signal is the time domain signal of the first symbol, the second time domain signal is the time domain signal of the second symbol, the third time domain signal is the time domain signal of the third frequency domain signal, and the third frequency domain signal is the frequency domain signal of the DMRS in the 2 nd symbol and the 4 th symbol of the first SSB.

As shown in fig. 7, for the first symbol, the first symbol may be calculated by dividing the first symbol into the first 4 RBs and the last 4 RBs of the first symbol, i.e., the portion of the first symbol including the PBCH, and the second symbol into the middle 12 RBs of the first symbol. For the first part, the first frequency domain signal Y (p, l, k) may be filtered_DMRS) Performing LS channel estimation to obtain a first estimation result H₁(p,3,k_DMRS) (ii) a For the second part, canTaking the average of the estimation results of the frequency domain corresponding positions of the symbol 2 and the symbol 4 to replace the estimation result of the current SSS data portion, to obtain a fourth estimation result, where the fourth estimation result may be represented as: h₂(p,3,k_DMRS)＝(H₂(p,2,k_DMRS)+H₂(p,4,k_DMRS))/2. The first estimation result H₁(p,3,k_DMRS) And fourth estimation result H₂(p,3,k_DMRS) The sum of (a) and (b) is subjected to IFFT operation, and transformed into the time domain to obtain the first time domain signal h (p,3, k), k being 0,1, …, 127.

For the second symbol, the frequency-domain signal Y (p, m) of the SSS in the second symbol may be extracted from the frequency-domain signals of the first SSB_SSS)，m_SSSFor the frequency domain position of SSS in the second symbol, then SSS sequence X (m) is generated based on cell ID, DMRS sequence X (m) is changed to DMRS of frequency domain, and signal X (m) is transmitted_SSS) Then using the transmission signal X (m)_SSS) And frequency domain signal Y (p, m) of SSS in the second symbol_SSS) Calculating the estimation result H (p, m) of SSS in the second symbol by using LS method_SSS). Finally, H (p, m)_SSS) IFFF operation is carried out, the IFFF operation is changed from a frequency domain to a time domain, and the second time domain signal h is obtained_SSS(m)。

For the 2 nd symbol and the 4 th symbol in the first SSB, the frequency domain signal Y (p,2, k) of the DMRS in the 2 nd symbol and the 4 th symbol may be directly extracted from the frequency domain signal of the first SSB_DMRS) And Y (p,4, k)_DMRS) For Y (p,2, k), respectively_DMRS) And Y (p,4, k)_DMRS) Performing LS channel estimation to obtain the estimation result H (p,2, k) of DMRS in the 2 nd symbol_DMRS) And the estimation result H (p,4, k) of DMRS in the 4 th symbol_DMRS) Then H (p,2, k)_DMRS) And H (p,4, k)_DMRS) IFFF operations are performed to obtain h (p,2, k) and h (p,4, k), where k is 0,1, …, 127, and the first time domain signal includes h (p,2, k) and h (p,4, k).

S640, determining a first power delay profile PDP based on the first time domain signal, the second time domain signal, and the third time domain signal, where the first PDP is a maximum PDP of the first SSB.

After obtaining the first time domain signal h (p,3, k) and the third time domain signals h (p,2, k), h (p,4, k), the first time domain signal and the third time domain signal may be inter-symbol combined to obtain a fourth time domain signal, where the fourth time domain signal is represented as: h (p, k) is h (p,2, k) + h (p,3, k) + h (p,4, k), k is 0,1, …, 127.

Further, the electronic device may include a plurality of antennas, and when the base station transmits the SSB to the electronic device, the plurality of antennas on the electronic device may each receive the SSB. Therefore, after the SSBs received by each antenna are inter-symbol combined, MRC may be performed on the time domain signals of DMRS in the SSBs received by multiple antennas to obtain a first sequence h (k), k being 0,1, …, 127, and MRC may be performed on the time domain signals of SSS in the SSBs received by multiple antennas to obtain a second sequence h (k)_SSS(m) based on the second sequence h_SSS(m), determining the effective path position in the first sequence h (k) as a third sequence, wherein the effective path position can refer to the position with a larger peak value in the second sequence, and calculating the PDP of the third sequence to obtain the first PDP.

S650, under the condition that the first PDP meets the preset condition, determining the sequence number of the first SSB as the sequence number of the target SSB.

The specific descriptions of S610, S620, and S640 may refer to the corresponding steps of the method for detecting SSB sequence numbers described in fig. 4, and are not repeated herein.

It can be seen that, in the embodiment of the present application, the electronic device receives frequency domain signals of i synchronization signal blocks SSB; splitting a 3 rd symbol of a first SSB into a first symbol and a second symbol, the first symbol comprising a demodulation-specific reference signal (DMRS), the second symbol comprising a Secondary Synchronization Signal (SSS), the i SSBs comprising the first SSB; calculating a first time domain signal, a second time domain signal and a third time domain signal, wherein the first time domain signal is a time domain signal of the first symbol, the second time domain signal is a time domain signal of the second symbol, the third time domain signal is a time domain signal of the third time domain signal, and the third time domain signal is a frequency domain signal of a DMRS in the 2 nd symbol and the 4 th symbol of the first SSB; determining a first Power Delay Profile (PDP) based on the first time domain signal, the second time domain signal and the third time domain signal, the first PDP being a maximum PDP of the first SSB; and under the condition that the first PDP meets a preset condition, determining the sequence number of the first SSB as the sequence number of the target SSB. The method and the device can effectively improve the performance of detecting the SSB serial number in a low signal-to-noise ratio scene.

It will be appreciated that the electronic device, in order to implement the above-described functions, comprises corresponding hardware and/or software modules for performing the respective functions. The present application is capable of being implemented in hardware or a combination of hardware and computer software in conjunction with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, with the embodiment described in connection with the particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In this embodiment, the electronic device may be divided into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in the form of hardware. It should be noted that the division of the modules in this embodiment is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of dividing each function module according to each function, fig. 8 is a schematic diagram of an apparatus for detecting an SSB serial number, and as shown in fig. 8, the apparatus 800 for detecting an SSB serial number is applied to an electronic device, and the apparatus 800 for detecting an SSB serial number may include: a receiving unit 810, a splitting unit 820, a calculating unit 830 and a determining unit 840.

Among other things, the receiving unit 810 may be used to support the electronic device to perform the above-described S410, S610, etc., and/or other processes for the techniques described herein.

Splitting unit 820 may be used to support an electronic device performing S420, S620, etc., described above, and/or other processes for the techniques described herein.

The computing unit 830 may be used to support the electronic device in performing the above-described S430, S630, etc., and/or other processes for the techniques described herein.

Determination unit 840 may be used to support an electronic device to perform the above-described S440, S450, S640, S650, etc., and/or other processes for the techniques described herein.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

The electronic device provided by this embodiment is configured to execute the method for detecting the SSB serial number, so that the same effect as that of the implementation method can be achieved.

In case an integrated unit is employed, the electronic device may comprise a processing module, a storage module and a communication module. The processing module may be configured to control and manage actions of the electronic device, and for example, may be configured to support the electronic device to perform the steps performed by the receiving unit 810, the splitting unit 820, the calculating unit 830, and the determining unit 840. The memory module may be used to support the electronic device in executing stored program codes and data, etc. The communication module can be used for supporting the communication between the electronic equipment and other equipment.

The processing module may be a processor or a controller. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., a combination of one or more microprocessors, a Digital Signal Processing (DSP) and a microprocessor, or the like. The storage module may be a memory. The communication module may specifically be a radio frequency circuit, a bluetooth chip, a Wi-Fi chip, or other devices that interact with other electronic devices.

In an embodiment, when the processing module is a processor and the storage module is a memory, the electronic device according to this embodiment may be a device having the structure shown in fig. 1.

The present embodiment further provides a computer storage medium, where computer instructions are stored in the computer storage medium, and when the computer instructions are run on an electronic device, the electronic device is caused to execute the above related method steps to implement the method for detecting an SSB serial number in the above embodiments.

The embodiment also provides a computer program product, which when running on a computer, causes the computer to execute the above related steps to implement the method for detecting an SSB serial number in the above embodiment.

In addition, embodiments of the present application also provide an apparatus, which may be specifically a chip, a component or a module, and may include a processor and a memory connected to each other; when the device runs, the processor can execute the computer execution instructions stored in the memory, so that the chip can execute the method for detecting the SSB serial number in the above method embodiments.

The electronic device, the computer storage medium, the computer program product, or the chip provided in this embodiment are all configured to execute the corresponding method provided above, so that the beneficial effects achieved by the electronic device, the computer storage medium, the computer program product, or the chip may refer to the beneficial effects in the corresponding method provided above, and are not described herein again.

Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules as needed, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, a module or a unit may be divided into only one logic function, and may be implemented in other ways, for example, a plurality of units or components may be combined or integrated into another apparatus, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed to a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods of the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for detecting SSB serial numbers is applied to electronic equipment, and the method comprises the following steps:

2. The method of claim 1, wherein computing the first time domain signal comprises:

extracting a first frequency-domain signal from the frequency-domain signals of the first SSB, the first frequency-domain signal being a frequency-domain signal of a first position in the first symbol;

performing channel estimation on the first frequency domain signal to obtain a first estimation result;

determining a fourth estimation result based on a second estimation result and a third estimation result, where the second estimation result is an estimation result of a second frequency domain signal, the second frequency domain signal is a frequency domain signal of a second position of the 2 nd symbol of the first SSB, the third estimation result is an estimation result of a third frequency domain position, and the third frequency domain signal is a frequency domain signal of a second position of the 4 th symbol of the first SSB;

determining the first time domain signal based on the first estimation result and the fourth estimation result.

3. The method of claim 2, further comprising:

and calculating a third time domain signal, wherein the third time domain signal is a time domain signal of the third frequency domain signal, and the third frequency domain signal is a frequency domain signal of the DMRS in the 2 nd symbol and the 4 th symbol of the first SSB.

4. The method of claim 3, wherein determining a first power-delay profile PDP based on the first time-domain signal and the second time-domain signal comprises:

performing intersymbol combination on the first time domain signal and the third time domain signal to obtain a fourth time domain signal;

MRC combining is carried out on the fourth time domain signals on a plurality of antennas to obtain the first sequence;

MRC combining is carried out on the third time domain signals on the multiple antennas to obtain a second sequence;

determining a third sequence from the first sequence based on the second sequence;

calculating the first PDP of the third sequence.

5. The method of any of claims 1-4, wherein the i SSBs comprise SSBs in the first cycle and/or SSBs in the second cycle.

6. The method according to any of claims 1-5, wherein said calculating a second time domain signal comprises:

performing channel estimation on the second frequency domain signal to obtain a third estimation result;

determining the second time domain signal based on the third estimation result.

7. The method according to any one of claims 1 to 6, wherein the first PDP satisfies a preset condition including:

the first PDP is larger than a second PDP, and the second PDP is a PDP of any SSB of the i SSBs except the first SSB.

8. An apparatus for detecting an SSB serial number, applied to an electronic device, the apparatus comprising:

9. An electronic device comprising a processor, a memory, a communication interface, and one or more programs stored in the memory and configured to be executed by the processor, the programs comprising instructions for performing the steps in the method of any of claims 1-7.

10. A computer-readable storage medium, characterized in that a computer program for electronic data exchange is stored, wherein the computer program causes a computer to perform the method according to any one of claims 1-7.