Signal transmission method and apparatus

Abstract

Embodiments of the present application relate to the technical field of communications, and provide a signal transmission method and apparatus, for use in sending a target signal at a larger bandwidth on a frequency band different from a current communication frequency band by means of a wireless communication device. The method comprises: acquiring a target signal, the target signal comprising a first signal and a second signal, the first signal being a signal that can be sent on a first frequency band, and the bandwidth of the target signal being greater than the bandwidth of the first signal; and sending the target signal on a second frequency band. In this way, when the first frequency band is a Wi-Fi frequency band, the first signal is a Wi-Fi signal, and the second frequency band is a UWB frequency band, a Wi-Fi communication device can be used for communication in the UWB frequency band.

Description

A signal transmission method and apparatus

[0001] This application claims priority to Chinese Patent Application No. 202410808276.6, filed on June 20, 2024, entitled "A Signal Transmission Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a signal transmission method and apparatus. Background Technology

[0003] Ultra-wideband (UWB) technology is a wireless carrier communication technology that can transmit data using nanosecond-level non-sinusoidal narrow pulses, thus occupying a wide spectrum. UWB technology features low system complexity, low transmitted signal power spectral density, insensitivity to channel fading, low interception capability, and high positioning accuracy, making it applicable to short-range high-speed wireless data communication, positioning, ranging, and sensing.

[0004] The aforementioned UWB technology uses a frequency range of 7163-8812MHz, which can also be referred to as the 8GHz UWB band. Currently, relevant regulations impose certain requirements on the transmit signal bandwidth, equivalent isotropic radiated power spectral density limits, and out-of-band transmit power limits for communication in the 8GHz UWB band. Therefore, how to effectively utilize current wireless communication equipment to achieve communication in the UWB band while meeting the requirements of relevant regulations is an urgent problem to be solved. Summary of the Invention

[0005] This application provides a signal transmission method and apparatus for transmitting target signals with a larger bandwidth on a frequency band different from the current communication frequency band using a wireless communication device.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] In a first aspect, a signal transmission method is provided, applicable to a first device, which is a wireless access device or a terminal device. The method includes: acquiring a target signal, the target signal including a first signal and a second signal, wherein the first signal is a signal that can be transmitted on a first frequency band, and the bandwidth of the target signal is greater than the bandwidth of the first signal; and transmitting the target signal on a second frequency band. For example, the first frequency band is a Wi-Fi band, the second frequency band is a UWB band, the first signal is a Wi-Fi signal with a bandwidth of 320MHz, 160MHz, or 80MHz, and the bandwidth of the target signal is greater than or equal to 500MHz. Optionally, the bandwidth of the target signal is equal to the sum of the bandwidth of the first signal and the bandwidth of the second signal.

[0008] In the above technical solution, the first device can acquire a target signal, which includes a first signal and a second signal that can be transmitted on a first frequency band. The bandwidth of the target signal is greater than that of the first signal. The first device then transmits the target signal on a second frequency band, allowing it to transmit the target signal with a larger bandwidth. This enables the first device, which supports communication on the first frequency band, to communicate on the second frequency band, thereby expanding the communication frequency band of the first device and improving its product competitiveness. Furthermore, when the first device simultaneously supports communication on both the first and second frequency bands, joint optimization of the first device can reduce its cost and power consumption and improve its anti-interference capability during communication. For example, if the first frequency band is a Wi-Fi band and the second frequency band is a UWB band, minor improvements or optimizations to the Wi-Fi communication device can enable it to communicate on the UWB band. This allows the same communication device to support communication on different frequency bands, significantly improving its product competitiveness.

[0009] In one possible implementation of the first aspect, the method further includes: sending first indication information, the first indication information being used to indicate the bandwidth of the first signal, for example, the first indication information being used to indicate that the bandwidth of the first signal is 320MHz, 160MHz, or 80MHz. Optionally, the first indication information is also used to indicate the bandwidth of valid data in the first signal. In the above possible implementations, by sending the first indication information to the second device, the first device can enable the second device to quickly and effectively determine the first signal in the target signal based on the first indication information, thereby ensuring that the second device can correctly receive and demodulate the first signal.

[0010] In one possible implementation of the first aspect, the method further includes: sending second indication information, the second indication information being used to indicate the center frequency of the first signal. Optionally, the second indication information is also used to indicate the center frequency of valid data in the first signal. In the above possible implementations, by sending the first indication information to the second device, the first device enables the second device to quickly and effectively determine the position of the first signal in the target signal based on the first indication information, thereby ensuring that the second device can correctly receive and demodulate the first signal.

[0011] In one possible implementation of the first aspect, the second signal includes a random signal or a copy of that random signal. Optionally, the random signal or a copy of that random signal can be inserted into the first signal via subcarrier mapping or frequency shifting to obtain the target signal. In the above possible implementations, by inserting a random signal or a copy of that random signal into the first signal, a target signal that can be transmitted in the second frequency band can be obtained. This method only requires slight modifications to the first device in its implementation, thereby reducing the cost of the device.

[0012] In one possible implementation of the first aspect, the second signal includes a copy of at least a portion of the first signal. Optionally, the copy of at least a portion of the first signal can be inserted into the first signal via subcarrier mapping or frequency shifting to obtain the target signal. In the above possible implementations, by inserting at least a portion of the copy of the first signal into the first signal, a target signal that can be transmitted in the second frequency band can be obtained. This method requires only slight modifications to the first device in its implementation, thereby reducing the cost of the device.

[0013] In one possible implementation of the first aspect, the power spectral density of the first signal is greater than the power spectral density of the second signal, and the power spectral density of the second signal is greater than a power spectral density threshold. This possible implementation ensures that the power spectral density of the target signal meets the relevant regulatory requirements for the power spectral density of transmitted signals in the second frequency band, and that the power spectral density of the first signal is greater than that of the second signal, thereby reducing the power consumption of the first device.

[0014] Secondly, a signal transmission method is provided, applicable to a second device, which is a terminal device or a wireless access device. The method includes: receiving a target signal on a second frequency band, the target signal including a first signal and a second signal, the first signal being a signal transmittable on the first frequency band, and the bandwidth of the target signal being greater than the bandwidth of the first signal; and demodulating the first signal in the target signal. For example, the first frequency band is a Wi-Fi band, the second frequency band is a UWB band, the first signal is a Wi-Fi signal with a bandwidth of 320MHz, 160MHz, or 80MHz, and the bandwidth of the target signal is greater than or equal to 500MHz. Optionally, the bandwidth of the target signal is equal to the sum of the bandwidth of the first signal and the bandwidth of the second signal. In the above technical solution, the second device can receive the target signal on the second frequency band and demodulate the first signal in the target signal. In specific implementation, the second device can be an existing device that supports receiving signals on the first frequency band. That is, this solution can use existing devices that support communication on the first frequency band to receive the target signal on the second frequency band without the need to improve or optimize the existing devices, thereby reducing equipment costs and improving product competitiveness.

[0015] In one possible implementation of the second aspect, the method further includes: receiving first indication information, the first indication information indicating the bandwidth of a first signal; and demodulating the first signal in the target signal, including: demodulating the first signal in the target signal according to the bandwidth of the first signal indicated by the first indication information. Optionally, the first indication information may also be used to indicate the bandwidth of valid data in the first signal.

[0016] In one possible implementation of the second aspect, the method further includes: receiving second indication information, the second indication information being used to indicate the center frequency of the first signal; and demodulating the first signal in the target signal, including: demodulating the first signal in the target signal according to the center frequency of the first signal indicated by the second indication information. Optionally, the second indication information is further used to indicate the center frequency of valid data in the first signal.

[0017] In one possible implementation of the second aspect, the second signal includes a random signal, or a copy of the random signal. Optionally, the random signal, or a copy of the random signal, can be inserted into the first signal via subcarrier mapping or frequency shifting to obtain the target signal.

[0018] In one possible implementation of the second aspect, the second signal includes a copy of at least a portion of the first signal. Optionally, the copy of at least a portion of the first signal can be inserted into the first signal via subcarrier mapping or frequency shifting to obtain the target signal.

[0019] In one possible implementation of the second aspect, the power spectral density of the first signal is greater than the power spectral density of the second signal, and the power spectral density of the second signal is greater than a power spectral density threshold.

[0020] Thirdly, a signal transmission device is provided, which serves as a first device or is applied to a chip within a first device, and can perform the functions executed by the first device in the above-described method. These functions can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the aforementioned functions.

[0021] In one possible implementation of the third aspect, the device includes a processing unit and a transmitting unit; the processing unit is configured to support the device in performing the corresponding functions in the above method; the transmitting unit can be used to support the device in communicating with a second device.

[0022] In another possible implementation of the third aspect, the device includes a processor and a transmitter; the processor is configured to support the device in performing the corresponding functions in the methods described above; the transmitter is used to support communication between the device and the second device. Optionally, the device also includes a memory coupled to the processor, which stores necessary program instructions and data for the device.

[0023] Fourthly, a signal transmission device is provided, which serves as a second device or is applied to a chip within a second device, and can perform the functions executed by the second device in the above-described method. These functions can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the aforementioned functions.

[0024] In one possible implementation of the fourth aspect, the device includes a receiving unit and a processing unit; the processing unit is configured to support the device in performing the corresponding functions in the above method; the receiving unit is used to support the device in communicating with the first device.

[0025] In another possible implementation of the fourth aspect, the device includes a processor and a receiver; the processor is configured to support the device in performing the corresponding functions in the methods described above; the receiver is used to support communication between the device and the first device. Optionally, the device also includes a memory coupled to the processor, which stores necessary program instructions and data for the device.

[0026] In another aspect of this application, a chip is provided, the chip comprising: a processing circuit and a transmitter, the processing circuit and the transmitter being configured to support the chip in performing the methods provided by the first aspect or any possible implementation thereof; or the chip comprising: a processing circuit and a receiver, the processing circuit and the receiver being configured to support the chip in performing the methods provided by the second aspect or any possible implementation thereof.

[0027] In another aspect of this application, a communication device is provided, comprising a first device and a second device; the first device comprises the means provided by the third aspect or any possible implementation of the third aspect, and the first device is used to perform the method provided by the first aspect or any possible implementation of the first aspect; the second device comprises the means provided by the fourth aspect or any possible implementation of the fourth aspect, and the second device is used to perform the method provided by the second aspect or any possible implementation of the second aspect.

[0028] In another aspect of this application, a computer-readable storage medium is provided, which stores a computer program or instructions that, when executed, implement the method provided by the first aspect or any possible implementation thereof.

[0029] In another aspect of this application, a computer-readable storage medium is provided, which stores a computer program or instructions that, when executed, implement the method provided by the second aspect or any possible implementation thereof.

[0030] In another aspect of this application, a computer program product is provided, comprising: a computer program (also referred to as code or instructions) that, when run, causes a computer to perform the methods provided by the first aspect or any possible implementation thereof.

[0031] In another aspect of this application, a computer program product is provided, comprising: a computer program (also referred to as code or instructions) that, when run, causes a computer to perform the methods provided by the second aspect or any possible implementation thereof.

[0032] It is understood that the beneficial effects of other aspects besides the first aspect and any possible implementation of the first aspect can be referred to in the same way as the beneficial effects of the first aspect and any possible implementation of the first aspect, and will not be repeated here. Attached Figure Description

[0033] Figure 1 is a schematic diagram of a Wi-Fi signal transmission spectrum template provided in an embodiment of this application;

[0034] Figure 2 is a schematic diagram of an out-of-band transmit power limit corresponding to an 8GHz UWB band provided in an embodiment of this application;

[0035] Figure 3 is a schematic diagram of a wireless communication system provided in an embodiment of this application;

[0036] Figure 4 is a schematic diagram of the structure of a wireless communication device provided in an embodiment of this application;

[0037] Figure 5 is a flowchart illustrating a signal transmission method provided in an embodiment of this application;

[0038] Figure 6 is a schematic diagram of a target signal provided in an embodiment of this application;

[0039] Figure 7 is a schematic diagram of another target signal provided in an embodiment of this application;

[0040] Figure 8 is a schematic diagram of another target signal provided in an embodiment of this application;

[0041] Figure 9 is a schematic diagram of another target signal provided in an embodiment of this application;

[0042] Figure 10 is a schematic diagram of the amplitude-frequency response of a filter in the UWB band according to an embodiment of this application;

[0043] Figure 11 is a schematic diagram of effective data and center frequency point in a target signal provided in an embodiment of this application;

[0044] Figure 12 is a schematic diagram of effective data and center frequency in another target signal provided in an embodiment of this application;

[0045] Figure 13 is a schematic diagram of effective data and center frequency in another target signal provided in an embodiment of this application;

[0046] Figure 14 is a flowchart illustrating another signal transmission method provided in an embodiment of this application;

[0047] Figure 15 is a schematic diagram of the structure of a first signal transmission device provided in an embodiment of this application;

[0048] Figure 16 is a schematic diagram of another first signal transmission device provided in an embodiment of this application;

[0049] Figure 17 is a schematic diagram of the structure of a second signal transmission device provided in an embodiment of this application;

[0050] Figure 18 is a schematic diagram of another second signal transmission device provided in an embodiment of this application. Detailed Implementation

[0051] The following sections will discuss the fabrication and use of various embodiments in detail. However, it should be understood that many applicable inventive concepts provided in this application can be implemented in a variety of specific environments. The specific embodiments discussed are merely illustrative of specific ways of implementing and using this application and technology, and do not limit the scope of this application.

[0052] Unless otherwise defined, all technical terms used herein have the same meaning as commonly known to one of ordinary skill in the art.

[0053] Each circuit or other component may be described or referred to as "for" performing one or more tasks. In this context, "for" is used to imply a structure by indicating that the circuit / component includes a structure (e.g., a circuit system) that performs one or more tasks during operation. Therefore, even when the specified circuit / component is currently inoperable (e.g., not turned on), it can still be referred to as "for performing that task." Circuits / components used with the term "for" include hardware, such as circuits that perform operations.

[0054] The technical solutions in the embodiments of this application will be described below with reference to the accompanying drawings. In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, a and b, a and c, b and c, a, b, and c; where a, b, and c can be single or multiple.

[0055] The embodiments of this application use terms such as "first" and "second" to distinguish objects with similar names, functions, or effects. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or order of execution. The term "coupling" is used to indicate an electrical connection, including direct connection via wires or terminals or indirect connection via other devices. Therefore, "coupling" should be considered as a broad type of electronic communication connection.

[0056] It should be noted that, in this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0057] Before introducing the embodiments of this application, the relevant background of this application will be explained first.

[0058] Ultra-wideband (UWB) technology is a wireless carrier communication technology that can transmit data using nanosecond-level non-sinusoidal narrow pulses, thus occupying a wide spectrum. UWB technology features low system complexity, low transmitted signal power spectral density, insensitivity to channel fading, low interception capability, and high positioning accuracy, making it applicable to short-range high-speed wireless data communication, positioning, ranging, and sensing.

[0059] The aforementioned UWB technology uses a frequency range of 7163-8812MHz, which can also be referred to as the 8GHz UWB band. Currently, relevant regulations impose certain requirements on the transmit signal bandwidth, equivalent isotropic radiated power spectral density limits, and out-of-band transmit power limits for communication in the 8GHz UWB band. For example, a power spectral density decrease of -10dB corresponds to a transmit signal bandwidth of no less than 500MB, and the equivalent isotropic radiated power spectral density limit is no greater than -41dBm / MHz. The out-of-band transmit power limits for different frequency ranges are shown in Table 1 below. Table 1 below uses root mean square (RMS) detection as an example for illustration.

[0060] Table 1

[0061] Currently, wireless communication devices supporting other communication protocols cannot be directly used for communication in the aforementioned 8GHz UWB band due to limitations such as operating frequency band, transmit power limits, and maximum transmit signal bandwidth. For example, taking the Wireless Fidelity (Wi-Fi) protocol (e.g., 802.11a / b / g / n / ac / ax / be / bn) as an example, its operating frequencies include 2.4GHz, 5GHz, or 6GHz. Corresponding wireless communication devices cannot support receiving and transmitting signals in the 8GHz UWB band, mainly because: firstly, the maximum transmit signal bandwidth is 320MHz, which is less than 500MHz, failing to meet the transmit signal bandwidth requirements of the 8GHz UWB band; secondly, the transmit spectral mask of the Wi-Fi signal does not meet the out-of-band transmit power limits corresponding to the 8GHz UWB band. Figure 1 shows a schematic diagram of a Wi-Fi signal transmission spectrum template. The horizontal axis represents frequency in MHz, and the vertical axis represents power spectral density (PSD) in dBr. Figure 2 shows a schematic diagram of out-of-band transmit power limits for the 8 GHz UWB band. The horizontal axis represents frequency in MHz, and the transmit power limits for different frequencies are in dBm / MHz. CH8, CH9, and CH10 represent different channel numbers. Therefore, how to effectively utilize current wireless communication devices to achieve communication in the UWB band while meeting relevant regulatory requirements is an urgent problem to be solved.

[0062] Based on this, embodiments of this application provide a signal transmission method that can utilize wireless communication devices that support smaller transmit signal bandwidth to achieve larger bandwidth signal transmission, and ensure that the transmitted larger bandwidth signal meets the requirements of relevant regulations for parameters such as transmit signal bandwidth and in-band and out-of-band transmit power limits.

[0063] The technical solutions provided in this application can be applied to various wireless communication systems. For example, these wireless communication systems may include, but are not limited to: Wi-Fi communication systems, Long Time Evolution (LTE) systems, Frequency Division Duplex (FDD) systems, Time Division Duplex (TDD) systems, Code Division Multiple Access (CDMA) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, Public Land Mobile Network (PLMN) systems, 5G communication systems, hybrid networking communication systems, or future communication systems. The technical solutions in this application can include various application scenarios, such as enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (uRLLC), and massive machine-type communication (mMTC).

[0064] The wireless communication systems and application scenarios described in this application are intended to more clearly illustrate the technical solutions of this application and do not constitute a limitation on the technical solutions provided in this application. As those skilled in the art will know, with the evolution of communication systems and the emergence of new application scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0065] It should be understood that in this wireless communication system, devices can be divided into devices that provide wireless network services and devices that use wireless network services. The devices providing wireless network services can also be called network equipment or network units; for example, such network equipment includes wireless access devices. The devices using wireless network services are typically located at the network edge and can be called terminal devices or simply terminals. Terminal devices can establish connections with network equipment and provide wireless communication services to users based on the services offered by the network equipment. The following example, using wireless access devices and terminal devices, illustrates the structure of this wireless communication system.

[0066] Figure 3 is a schematic diagram of a wireless communication system provided in an embodiment of this application. The wireless communication system may include a wireless access device 10 and a terminal device 20. The terminal device 20 and the wireless access device 10 can communicate wirelessly. In this wireless communication system, the wireless access device 10 can provide communication coverage for a specific geographical area through an integrated or external antenna device. The terminal device 20 located within the communication coverage area of ​​the wireless access device 10 can access the wireless access device 10 and communicate with it.

[0067] Optionally, the wireless access device 10 may include a base station, which may also be referred to as a wireless access point (AP) or a transmission reception point (TRP). In one possible example, the base station may be a generation Node B (gNB) in a 5G new radio (NR) system, an evolutionary Node B (eNB) in a 4G long term evolution (LTE) system, etc. Depending on the physical form or transmission power of the base station, it may be classified as a macro base station or a micro base station; a micro base station may also be referred to as a small base station or a small cell.

[0068] Optionally, the terminal device 20 may include, but is not limited to: mobile phones, tablets, laptops, desktop computers, handheld computers, ultra-mobile personal computers (umPCs), mobile internet devices (MIDs), netbooks, cameras, camcorders, wearable devices (such as smartwatches and smart bracelets), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electricity meters, etc.), smart robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, and flying devices (such as smart robots, hot air balloons, drones, airplanes, etc.).

[0069] In this embodiment, both the wireless access device 10 and the terminal device 20 can be referred to as wireless communication devices. The following description uses a mobile phone as an example to illustrate the structure of this wireless communication device.

[0070] Figure 4 is a schematic diagram of a wireless communication device provided in an embodiment of this application. The wireless communication device may include components such as a radio frequency (RF) circuit 110, a memory 120, an input unit 130, a display unit 140, a sensor 150, an audio circuit 160, a processor 170, and a power supply 180.

[0071] The RF circuit 110 can be used to transmit and receive information, or to receive or send signals during a call. Specifically, it receives downlink information from the base station and processes it in the processor 170; additionally, it transmits uplink data to the base station. Typically, the RF circuit 110 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier (LNA), a duplexer, etc. Furthermore, the RF circuit 110 can also communicate wirelessly with networks and other devices.

[0072] The memory 120 can be used to store data, software programs, and modules; it includes a program storage area and a data storage area. The program storage area can store the operating system and applications required for at least one function, such as sound playback and image playback functions. The data storage area can store data created based on the use of the wireless communication device, such as audio data, image data, and a phone book. Furthermore, the wireless communication device may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. In this embodiment, the memory may include multiple memories, including a first memory and a second memory.

[0073] Input unit 130 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the wireless communication device. Input unit 130 may include touch screen 131 and other input devices 132. Touch screen 131 can collect touch operations on or near the user and drive corresponding connection devices according to a pre-set program. For example, touch operations may include operations performed by the user using a finger, stylus, or any suitable object or accessory on or near the touch screen. Optionally, other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys, trackball, mouse, joystick, etc., such as volume control buttons, power switch buttons, etc.

[0074] Display unit 140 can be used to display information input by the user or information provided to the user, as well as various menus of the wireless communication device. In one example, display unit 140 may include display screen 141, which may be configured as a liquid crystal display (LCD), organic light-emitting diode (OLED), or similar form. Further, touchscreen 131 may cover display screen 141. When touchscreen 131 detects a touch operation on or near it, it transmits the information to processor 170 to determine the type of touch event. Subsequently, processor 170 provides corresponding visual output on display screen 141 based on the type of touch event. Although in the figures, touchscreen 131 and display screen 141 are shown as two separate components to implement the input and output functions of the wireless communication device, in some embodiments, touchscreen 131 and display screen 141 can be integrated to implement the input and output functions of the wireless communication device.

[0075] Sensor 150 may include one or more sensors for providing status assessments of various aspects of the wireless communication device. Sensor 150 may include a light sensor, which can be used in imaging applications, i.e., as a component of a camera or video camera. Furthermore, sensor 150 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor. Sensor 150 can detect acceleration / deceleration, orientation, on / off state, relative positioning of components, or temperature changes of the wireless communication device, etc.

[0076] Audio circuitry 160, a speaker, and a microphone provide an audio interface between the user and the wireless communication device. Audio circuitry 160 converts received audio data into electrical signals, transmits them to the speaker, and the speaker converts them into sound signals for output. On the other hand, the microphone converts collected sound signals into electrical signals, which are received by audio circuitry 160, converted into audio data, and then output to RF circuitry 110 for transmission to, for example, another mobile phone, or to memory 120 for further processing.

[0077] The processor 170 is the control center of the wireless communication device. It connects various parts of the device via various interfaces and lines, and performs various functions and processes data by running or executing software programs and / or modules stored in the memory 120, and by calling data stored in the memory 120, thereby providing overall monitoring of the wireless communication device. Optionally, the processor 170 may include one or more processing units, which may include, but are not limited to: a central processing unit (CPU), a network processing unit (NPU), a graphics processing unit (GPU), an image signal processor (ISP), a tensor processing unit (TPU), a data processing unit (DPU), a digital signal processor (DSP), a microcontroller, or a microprocessor. Furthermore, the processor 170 may also include other hardware circuits or accelerators, such as application-specific integrated circuits (ASICs), complex programmable logic devices (CPLDs), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. Alternatively, the processor 170 may also be a combination of functions that implement computing, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc.

[0078] The wireless communication device may also include a power supply 180 (e.g., a battery) to power various components. The power supply 180 can be logically connected to the processor 170 via a power management system, thereby enabling functions such as charging, discharging, and power consumption management. Optionally, the power management system can simultaneously support fast charging and non-fast charging technologies. In practical applications, the power management system can charge the battery in the power supply 180 using either fast charging or non-fast charging technologies.

[0079] Optionally, the wireless communication device may also include a Wi-Fi module, a Bluetooth module, etc., which will not be described in detail in the embodiments of this application. Those skilled in the art will understand that the structure of the wireless communication device shown in the figure does not constitute a limitation on the wireless communication device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0080] Figure 5 is a flowchart illustrating a signal transmission method provided in an embodiment of this application. This method can be applied to a wireless communication system, which includes a first device and a second device. The first device and the second device can also be referred to as wireless communication devices. The method includes the following steps.

[0081] S201: The first device acquires a target signal, which includes a first signal and a second signal. The first signal is a signal that can be transmitted on a first frequency band, and the bandwidth of the target signal is greater than the bandwidth of the first signal.

[0082] In this configuration, the first device can be a wireless access device and the second device can be a terminal device; or, the first device can be a terminal device and the second device can be a wireless access device. That is, the first device can be either a wireless access device or a terminal device, and the second device can be either a wireless access device or a terminal device.

[0083] In addition, the first signal is a signal that can be transmitted on the first frequency band. It can be understood that the first signal meets the relevant regulatory requirements for the transmission signal on the first frequency band. For example, if the first frequency band is the Wi-Fi band and the first signal meets the relevant regulatory requirements for the transmission signal on the Wi-Fi band, then the aforementioned first signal or signal that can be transmitted on the first frequency band can be called a Wi-Fi signal.

[0084] Furthermore, the bandwidth of the target signal is greater than the bandwidth of the first signal. For example, the first signal is a Wi-Fi signal with a bandwidth of 320MHz, 160MHz, 80MHz, 40MHz, or 20MHz, while the bandwidth of the target signal is close to 500MHz or greater than or equal to 500MHz.

[0085] Optionally, the target signal can be a signal obtained by spectrally spreading the first signal. The first signal can be an effective signal in the target signal, and the second signal can be a redundant signal in the target signal. In the target signal, the second signal can be located as a whole on one side of the first signal, or it can be divided into two sub-signals located on both sides of the first signal. For example, the bandwidth of the target signal is equal to the sum of the bandwidth of the first signal and the bandwidth of the second signal.

[0086] Optionally, the second signal includes at least one of the following: a random signal, a copy of the random signal, or a copy of at least a portion of the first signal. The random signal, the copy of the random signal, or the copy of at least a portion of the first signal can be obtained by the first device through subcarrier mapping, frequency shifting, or both. For example, redundant data is inserted during subcarrier mapping to form a random signal, or the inserted redundant data is frequency-shifted during subcarrier mapping to form a copy of the random signal, or at least a portion of the data of the first signal is frequency-shifted during subcarrier mapping to form a copy of the first signal. The redundant data can be a random number or a copy of the data in the first signal.

[0087] To facilitate understanding, the following example illustrates the process of the first device acquiring the target signal, using the first frequency band as the Wi-Fi band and the second frequency band as the UWB band.

[0088] In a first possible example, as shown in Figure 6, if the bandwidth of the first signal is 320MHz and the bandwidth of the target signal is 500MHz, then the first device acquires the target signal by inserting 90MHz of redundant data on both sides of the first signal to form 90MHz of random signals on both sides of the first signal, thus obtaining a target signal with a bandwidth of 500MHz. In this case, the second signal includes the random signals located on both sides of the first signal.

[0089] In a second possible example, as shown in Figure 7(a), if the bandwidth of the first signal is 160MHz and the bandwidth of the target signal is 504MHz, then the first device acquires the target signal by: inserting 4MHz of redundant data on both sides of the first signal to form 4MHz random signals on both sides of the first signal; then, the first device performs frequency shifting processing on the first signal and the 4MHz random signals to form 168MHz replica signals on both sides, thus obtaining the target signal with a bandwidth of 504MHz. In this case, the second signal includes the random signals and replica signals located on both sides of the first signal.

[0090] In a third possible example, as shown in Figure 7(b), if the bandwidth of the first signal is 160MHz and the bandwidth of the target signal is 500MHz, then the first device acquires the target signal by: performing frequency shifting on the first signal to form duplicate signals of the first signal on both sides, thus obtaining a signal with a bandwidth of 480MHz; then, the first device inserts 10MHz of redundant data on both sides of the 480MHz bandwidth signal to form 10MHz of random signals on both sides, thus obtaining the target signal with a bandwidth of 500MHz. In this case, the second signal includes the duplicate signals of the first signal and the random signals located on both sides of the first signal.

[0091] In a fourth possible example, as shown in Figure 8(a), if the bandwidth of the first signal is 80MHz and the bandwidth of the target signal is 500MHz, then the first device acquires the target signal by: performing multiple frequency shifting operations on the first signal to form two duplicate signals of the first signal on both sides; then, the first device inserts 50MHz of redundant data on both sides to form 50MHz of random signals on both sides, thus obtaining a target signal with a bandwidth of 500MHz. In this case, the second signal includes the duplicate signals and the random signals located on both sides of the first signal.

[0092] In the fifth possible example, as shown in Figure 8(b), if the bandwidth of the first signal is 80MHz and the bandwidth of the target signal is 500MHz, then the first device acquires the target signal by: inserting 10MHz of redundant data on both sides of the first signal to form 10MHz random signals on both sides of the first signal; then, the first device performs multiple frequency shifting processes on the first signal and the 10MHz random signals on both sides to form two 100MHz duplicate signals on both sides, thus obtaining the target signal with a bandwidth of 500MHz. At this time, the second signal includes the random signals and duplicate signals located on both sides of the first signal.

[0093] In the sixth possible example, as shown in Figure 9, if the bandwidth of the first signal is 80MHz and the bandwidth of the target signal is 500MHz, then the first device acquires the target signal by: performing multiple frequency shifting operations on the first signal to form 160MHz and 240MHz copy signals on both sides of the first signal, thus obtaining a signal with a bandwidth of 480MHz; then, the first device inserts 10MHz of redundant data on both sides of the 480MHz bandwidth signal to form 10MHz of random signals on both sides, thus obtaining the target signal with a bandwidth of 500MHz. In this case, the second signal includes the copy signals and the random signals located on both sides of the first signal.

[0094] It is understood that when the first device acquires the target signal by inserting redundant data and frequency shifting, the first device may insert redundant data first and then shift the frequency, or it may shift the frequency first and then insert redundant data. In addition, the first device may insert redundant data of the same bandwidth or different bandwidths on both sides of the signal, or it may perform the same number of frequency shifting operations or different number of operations on both sides of the signal. This application embodiment does not impose specific limitations on this.

[0095] S202a: The first device transmits the target signal on the second frequency band. Correspondingly, S202b: The second device receives the target signal on the second frequency band.

[0096] The frequency range corresponding to the first frequency band is different from that corresponding to the second frequency band; for example, the first frequency band is smaller than the second frequency band, or the first frequency band is larger than the second frequency band. Optionally, the first frequency band is a frequency band with a smaller transmission signal bandwidth requirement, and the second frequency band is a frequency band with a larger transmission signal bandwidth requirement. For example, the first frequency band is a 2.4GHz Wi-Fi band, a 5GHz Wi-Fi band, or a 6GHz Wi-Fi band, the second frequency band is an 8GHz UWB band, the bandwidth of the first signal is 320MHz, 160MHz, 80MHz, 40MHz, or 20MHz, and the bandwidth of the target signal is close to 500MHz, or the bandwidth of the target signal is greater than or equal to 500MHz.

[0097] In addition, the target signal is a signal that can be transmitted in the second frequency band, that is, the second signal meets the relevant regulatory requirements for transmitted signals in the second frequency band. For example, the second frequency band is the UWB band, and the target signal meets the relevant regulatory requirements described above for the bandwidth, equivalent isotropic radiated power spectral density limit and out-of-band transmit power limit of the transmitted signal in the UWB band.

[0098] Optionally, in the target signal, the power spectral density of the first signal is greater than the power spectral density of the second signal, and the power spectral density of the second signal is greater than a power spectral density threshold. This power spectral density threshold can include different values ​​at different frequencies. That is, the power spectral density of the target signal meets the power spectral density threshold required by relevant regulations, and the power spectral density of the second signal is relatively small. This reduces the transmission power of the second signal, thereby reducing the energy consumption of the first device.

[0099] For example, taking the second frequency band as the UWB frequency band and the target signal as a signal transmitted on the UWB frequency band, the specific values ​​of the power spectral density threshold at different frequencies may include -41dBm / MHz, -51dBm / MHz, -65dBm / MHz and -70dBm / MHz. For a detailed description of the power spectral density threshold, please refer to the relevant description in the UWB technology section above. The embodiments of this application will not be repeated here.

[0100] In one possible embodiment, if the first frequency band is a Wi-Fi band, the second frequency band is a UWB band, and the first signal is a Wi-Fi signal, then the first device can obtain the target signal based on the Wi-Fi signal, and the target signal meets the relevant regulatory requirements for transmission signals on the UWB band; correspondingly, the second device can receive the target signal on the UWB band.

[0101] Optionally, the method further includes: the first device transmitting a first signal on a first frequency band. In one possible embodiment, the first device transmits the first signal on the first frequency band and the target signal on a second frequency band in a time-division manner. Optionally, the first frequency band is a Wi-Fi band and the second frequency band is a UWB band, that is, the first device operates in both the Wi-Fi and UWB bands in a time-division manner. For example, the first device can transmit the Wi-Fi signal on the first frequency band or the target signal on the second frequency band in a time-division manner depending on the distance between the first device and the second device; for example, it can transmit the Wi-Fi signal on the first frequency band at a long distance and the target signal on the second frequency band at a short distance.

[0102] When the first device operates in both the Wi-Fi and UWB bands, the filter in the first device can have different filtering coefficients in the Wi-Fi and UWB bands. The passband and out-of-band image rejection capabilities corresponding to the filtering coefficients in the Wi-Fi band meet the relevant requirements for Wi-Fi communication, and the passband and out-of-band image rejection capabilities corresponding to the filtering coefficients in the UWB band also meet the relevant requirements for UWB communication. For example, Figure 10 shows a schematic diagram of the amplitude-frequency response of a filter in the UWB band, where the horizontal axis represents frequency (MHz) and the vertical axis represents amplitude (dB). Compared to the amplitude-frequency response in the Wi-Fi band, the amplitude-frequency response of this filter in the UWB band extends the passband, ensuring a single-sided bandwidth of not less than 250MHz, while also increasing out-of-band image rejection capability (even if the out-of-band waveform of the amplitude-frequency response drops more steeply), ensuring that the out-of-band signal transmission power meets the out-of-band transmission power limit requirements of the corresponding frequency band.

[0103] S203: The second device demodulates the first signal in the target signal.

[0104] In one possible embodiment, when the second device receives the target signal, the second device can demodulate the first signal in the target signal based on the bandwidth and center frequency of the first signal. For example, the second device determines the position of the first signal in the target signal based on the bandwidth and center frequency of the first signal, obtains the first signal from the target signal, and then performs subcarrier demapping, constellation demapping, channel decoding, and other processing on the first signal to achieve demodulation of the first signal.

[0105] In this context, all data in the first signal can be valid data, or only some data in the first signal can be valid data. The second device can obtain the valid data in the first signal by demodulating the first signal in the target signal according to the bandwidth and center frequency of the first signal.

[0106] In addition, the center frequency of the first signal may or may not be the center frequency of the target signal. Specifically, it can be determined or adjusted by the first device during the acquisition of the target signal. For example, the first device can determine the center frequency of the first signal during the subcarrier mapping process, or the first device can adjust the center frequency of the first signal during the frequency shifting process. This application embodiment does not impose specific limitations on this.

[0107] Furthermore, the transmission bandwidth of the first signal supported by the first device and the reception bandwidth of the first signal supported by the second device can be symmetrical (i.e., the same) or asymmetrical (i.e., different). Optionally, the maximum transmission bandwidth of the first signal supported by the first device can be greater than or equal to the maximum reception bandwidth of the first signal supported by the second device. For example, the maximum transmission bandwidth of the first signal supported by the first device is 320MHz, 160MHz, or 80MHz, and the maximum reception bandwidth of the first signal supported by the second device is 160MHz, 80MHz, or 40MHz, etc.

[0108] Whether the transmission bandwidth of the first signal supported by the first device is symmetrical or asymmetrical with the reception bandwidth of the first signal supported by the second device, the second device can successfully demodulate the valid data in the first signal based on the bandwidth and center frequency of the first signal. For ease of understanding, the following example uses a Wi-Fi signal as the first signal to illustrate the bandwidth, center frequency, and valid data of the Wi-Fi signal transmitted by the first device, as well as the bandwidth and center frequency of the Wi-Fi signal that the second device supports demodulating.

[0109] In the first possible example, as shown in Figure 11, if the bandwidth of the target signal is 500MHz, the first device supports transmitting a 320MHz Wi-Fi signal, and the second device supports demodulating a 160MHz Wi-Fi signal, then: the center frequency of the first signal in the target signal is f0, the bandwidth of the effective data in the first signal is 160MHz, and the Wi-Fi signal that the second device supports demodulating is the effective data of the first signal with a bandwidth of 160MHz, and the corresponding center frequency is also f0.

[0110] In the second possible example, as shown in Figure 12, if the bandwidth of the target signal is 500MHz, the first device supports transmitting a 320MHz Wi-Fi signal, and the second device supports demodulating an 80MHz Wi-Fi signal, then: the center frequency of the first signal in the target signal is f0, the bandwidth of the effective data in the first signal is 80MHz, and the Wi-Fi signal that the second device supports demodulating is the effective data of the first signal with a bandwidth of 80MHz, and the corresponding center frequency is also f0.

[0111] In the third possible example, as shown in Figure 13(a), if the bandwidth of the target signal is 500MHz, the first device supports transmitting a 320MHz Wi-Fi signal, and the second device supports demodulating a 160MHz Wi-Fi signal, then: the center frequency of the first signal in the target signal is f0, the bandwidth of the effective data in the first signal is 160MHz, and the Wi-Fi signal that the second device supports demodulating is the effective data in the first signal with a bandwidth of 160MHz and the corresponding center frequency is f1.

[0112] In the fourth possible example, as shown in Figure 13(b), if the bandwidth of the target signal is 500MHz, the first device supports transmitting a 320MHz Wi-Fi signal, and the second device supports demodulating an 80MHz Wi-Fi signal, then: the center frequency of the first signal in the target signal is f0, the bandwidth of the effective data in the first signal is 80MHz, and the Wi-Fi signal that the second device supports demodulating is the effective data in the first signal with a bandwidth of 80MHz and the corresponding center frequency is f2.

[0113] The composition of the signal corresponding to the second device shown in Figures 11 to 13 above may be the composition of the target signal as perceived by the second device, and is only used as an example for illustration.

[0114] As can be seen from the above possible examples, in this embodiment of the application, it is only necessary to ensure that the center frequency of the valid data in the first signal is aligned with the center frequency of the signal supported for demodulation by the second device, so that the second device can successfully demodulate the valid data in the first signal. Optionally, the maximum bandwidth of the valid data in the first signal can be determined by the maximum receiving bandwidth of the second device.

[0115] In this application embodiment, several Wi-Fi signal bandwidth transmission schemes with bandwidths of 80MHz, 160MHz, and 320MHz are provided through the examples listed above. In the above examples, by expanding the signal bandwidth of the first signal that conforms to the Wi-Fi protocol, the target signal obtained by the first device can meet the transmission bandwidth requirements of the UWB band. At the same time, by determining or adjusting the center frequency point of the effective data in the first signal, the center frequency point of the effective data in the first signal is aligned with the center frequency point of the signal that the second device supports demodulation, which can ensure that the target signal can be correctly received and demodulated by the second device that conforms to the Wi-Fi protocol.

[0116] Optionally, the bandwidth and / or center frequency of the first signal can be agreed upon in advance by the first device and the second device, or can be pre-configured for the first device and the second device, or can be notified to the second device by the first device during communication. The specific process of the first device notifying the second device is illustrated below with an example.

[0117] In one possible embodiment, referring to FIG5 and as shown in FIG14, before S203, the method further includes: S204a-S204b. The order of S204a-S204b and the aforementioned S201-S202b may not be specific; FIG14 illustrates this by taking S204a-S204b after S201-S202b as an example.

[0118] S204a: The first device sends first indication information and / or second indication information to the second device, wherein the first indication information is used to indicate the bandwidth of the first signal, and the second indication information is used to indicate the center frequency of the first signal. Correspondingly, S204b: The second device receives the first indication information and / or the second indication information.

[0119] Optionally, the first device may send the first instruction information and the second instruction information to the second device at the same time. For example, the first device may send the first instruction information and the second instruction information in the same message to the second device; or, the first device may send the first instruction information and the second instruction information separately. For example, the first device may send the first instruction information and the second instruction information in different messages to the second device. This application embodiment does not impose specific limitations on this.

[0120] In one possible embodiment, when the first device is a wireless access device and the second device is a terminal device, the first device may also broadcast first indication information and / or second indication information to multiple second devices to notify the multiple second devices of the bandwidth and / or center frequency of the first signal.

[0121] In the technical solution provided in this application embodiment, a first device can acquire a target signal, and the target signal includes a first signal and a second signal that can be transmitted on a first frequency band. The bandwidth of the target signal is greater than the bandwidth of the first signal. The first device then transmits the target signal on a second frequency band, which is different from the first frequency band, with a larger bandwidth. This allows the first device, which supports communication on the first frequency band, to communicate on the second frequency band, thereby expanding the communication frequency band of the first device and improving its product competitiveness. Furthermore, when the first device simultaneously supports communication on the first and second frequency bands, joint optimization of the first device can reduce its cost and power consumption and improve its anti-interference capability during communication. For example, if the first frequency band is a Wi-Fi band and the second frequency band is a UWB band, minor improvements or optimizations to the Wi-Fi communication device can enable it to communicate on the UWB band. This allows the same communication device to support communication on different frequency bands, significantly improving the product competitiveness of the Wi-Fi communication device.

[0122] The above primarily describes the solutions provided by the embodiments of this application from the perspective of interaction between the first devices. It is understood that, in order to achieve the above functions, the first devices include corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0123] This application embodiment can divide the first device and the first device into functional modules according to the above method example. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the division of each functional module according to each function as an example.

[0124] Figure 15 shows a schematic diagram of a first signal transmission device according to the above embodiments, in the case of using integrated units. This device can be a first device or a chip applied to a first device, and includes a processing unit 301 and a transmitting unit 302. The processing unit 301 can be used to support the device in executing S201 of the above method embodiments; the transmitting unit 302 is used to support the device in executing one or more of S202a or S204a of the above method embodiments. All relevant content of each step involved in the above method embodiments can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0125] Based on hardware implementation, the processing unit 301 in this application embodiment can be the processor of the device, and the transmitting unit 302 can be the transmitter of the device. The transmitter can usually be integrated with the receiver as a transceiver. The specific transceiver can also be called a communication interface or interface circuit.

[0126] Figure 16 shows a schematic diagram of another first signal transmission device involved in the above embodiments provided in this application. The device can be used as a first device or a chip applied to a first device. The device includes a processor 312, and may also include a memory 311, a communication interface 313 and a bus 314. The processor 312, the memory 311 and the communication interface 313 are connected through the bus 314.

[0127] The processor 312 is used to control and manage the operation of the device. In one possible embodiment, the processor 312 can be used to support the device in receiving S201 in the above method embodiments and / or other technical processes described herein. The communication interface 313 is used to support the device in communication, such as supporting the device to communicate with a second device.

[0128] In this embodiment, processor 312 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc. The bus 314 may include an address bus, a data bus, a control bus, etc.

[0129] Figure 17 shows a schematic diagram of a second signal transmission device according to the above embodiments, in the case of using integrated units. This device can be a second device or a chip applied to a second device, and includes a receiving unit 401 and a processing unit 402. The receiving unit 401 can be used to support the device in executing one or more steps of S202b or S204b of the above method embodiments; the processing unit 402 can be used to support the device in executing S203 of the above method embodiments. All relevant content of each step involved in the above method embodiments can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0130] Based on hardware implementation, the processing unit 402 in this application embodiment can be the processor of the device, and the receiving unit 401 can be the receiver of the device. The receiver and transmitter can usually be integrated together as a transceiver. The specific transceiver can also be called a communication interface or interface circuit.

[0131] Figure 18 shows a schematic diagram of another second signal transmission device involved in the above embodiments provided in this application. The device can be used as a second device or a chip applied to a second device. The device includes a processor 412, and may also include a memory 411, a communication interface 413 and a bus 414. The processor 412, the memory 411 and the communication interface 413 are connected through the bus 414.

[0132] The processor 412 is used to control and manage the operation of the device. In one possible embodiment, the processor 412 can be used to support the device in executing S203 of the above method embodiment, and / or other technical processes described herein. The communication interface 413 is used to support the device in communication, such as supporting the device to communicate with a first device.

[0133] In this embodiment, processor 412 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc. The bus 414 may include an address bus, a data bus, a control bus, etc.

[0134] In another embodiment of this application, a communication system is provided, which includes a first device and a second device; wherein the first device may be or include the apparatus provided in FIG15 or FIG16 above, for performing the steps of the first device in the method embodiment provided above; the second device may be or include the apparatus provided in FIG17 or FIG18 above, for performing the steps of the second device in the method embodiment provided above.

[0135] It is understood that all relevant content of each step involved in the above method embodiments can be referenced in the embodiments of the first signal transmission device and the second signal transmission device, as well as in the embodiments of the communication system, and will not be repeated here.

[0136] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative. For instance, the division of modules or units is merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another apparatus, or some features may be ignored or not executed.

[0137] The units described as separate components may or may not be physically separate. A component shown as a unit can be one or more physical units; that is, it can be located in one place or distributed in multiple different locations. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0138] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. This readable storage medium may include various media capable of storing program code, such as a USB flash drive, external hard drive, read-only memory, random access memory, magnetic disk, or optical disk. Based on this understanding, the technical solution of the embodiments of this application, in essence, 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.

[0139] In another embodiment of this application, a readable storage medium is also provided, which stores computer-executable instructions that are executed by a device (which may be a microcontroller, chip, etc.) or a processor when executing the steps of the first device in the above method embodiment.

[0140] In another embodiment of this application, a readable storage medium is also provided, which stores computer-executable instructions when a device (which may be a microcontroller, chip, etc.) or processor executes the steps of the second device in the above method embodiment.

[0141] In another embodiment of this application, a computer program product is also provided, the computer program product including computer instructions stored in a readable storage medium; at least one processor of the device can read the computer instructions from the readable storage medium, and the at least one processor executes the computer instructions to cause the device to perform the steps of the first device in the above method embodiment.

[0142] In another embodiment of this application, a computer program product is also provided, the computer program product including computer instructions stored in a readable storage medium; at least one processor of the device can read the computer instructions from the readable storage medium, and the at least one processor executes the computer instructions to cause the device to perform the steps of the second device in the above method embodiment.

[0143] Finally, it should be noted that the above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A signal transmission method, characterized by, The method comprises: acquiring a target signal, the target signal comprising a first signal and a second signal, the first signal being a signal transmittable on a first frequency band, a bandwidth of the target signal being greater than a bandwidth of the first signal; transmitting the target signal on a second frequency band.

2. The method of claim 1, wherein, The method further comprises: transmitting first indication information, the first indication information being used for indicating the bandwidth of the first signal.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: transmitting second indication information, the second indication information being used for indicating a center frequency point of the first signal.

4. The method according to any one of claims 1 to 3, characterized in that, The second signal comprises a random signal or a copy of the random signal.

5. The method according to any one of claims 1 to 4, characterized in that, The second signal comprises a copy of at least part of the first signal.

6. The method according to any one of claims 1 to 5, characterized in that, A power spectral density of the first signal is greater than a power spectral density of the second signal, and the power spectral density of the second signal is greater than a power spectral density threshold.

7. The method according to any one of claims 1 to 6, characterized in that, The first frequency band is a Wi-Fi frequency band, the second frequency band is a UWB frequency band, and the first signal is a Wi-Fi signal.

8. A signal transmission method characterized by, The method comprises: receiving a target signal on a second frequency band, the target signal comprising a first signal and a second signal, the first signal being a signal transmittable on a first frequency band, a bandwidth of the target signal being greater than a bandwidth of the first signal; demodulating the first signal in the target signal.

9. The method of claim 8, wherein, The method further comprises: receiving first indication information, the first indication information being used for indicating the bandwidth of the first signal. The demodulating the first signal in the target signal comprises: demodulating the first signal in the target signal according to the bandwidth of the first signal indicated by the first indication information.

10. The method according to claim 8 or 9, characterized in that, The method further comprises: receiving second indication information, the second indication information being used for indicating a center frequency point of the first signal; The demodulating the first signal in the target signal comprises: demodulating the first signal in the target signal according to the center frequency point of the first signal indicated by the second indication information.

11. The method according to any one of claims 8-10, characterized in that, The second signal comprises a random signal or a copy of the random signal.

12. The method according to any one of claims 8-11, characterized in that, The second signal comprises a copy of at least part of the first signal.

13. The method according to any one of claims 8-12, characterized in that, A power spectral density of the first signal is greater than a power spectral density of the second signal, and the power spectral density of the second signal is greater than a power spectral density threshold.

14. The method according to any one of claims 8 to 13, characterized in that, The first frequency band is a Wi-Fi frequency band, the second frequency band is a UWB frequency band, and the first signal is a Wi-Fi signal.

15. A signal transmission device, characterized by comprising: The apparatus comprises a processor and a transceiver, the processor and the transceiver being used for supporting the apparatus to perform the signal transmission method according to any one of claims 1-14.

16. A readable storage medium, characterized by, The readable storage medium has instructions stored therein, when the instructions are run on a device, causing the device to perform the method according to any one of claims 1-14.

17. A computer program product, characterised in that, The computer program product comprises a computer program, when the computer program is run on a device, causing the device to perform the method according to any one of claims 1-14.

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