Signal transmission method, device and system

Abstract

Disclosed are a signal transmission method, apparatus and system, relating to the technical field of communications. A first device generates at least one target signal, and sends the at least one target signal within a first time period. The at least one target signal comprises a first signal and a second signal. The bandwidth of the target signal is greater than the bandwidth of the first signal. The power spectral density of the first signal is greater than or equal to the power spectral density of the second signal. The first time period comprises a plurality of time units, and the frequency ranges occupied by the first signal in at least two time units are different. The frequency ranges of the target signal in at least two time units are the same. In this way, the first device supports communication on a plurality of frequency bands, expanding the frequency bands for the first device to perform communication, and improving an anti-interference capability during communication.

Description

Signal transmission method, apparatus and system

[0001] The present application claims priority from the Chinese patent application No. 202410856042.9 filed on June 27, 2024, and entitled "Signal transmission method, apparatus and system", the contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular to a signal transmission method, apparatus and system. BACKGROUND

[0003] Currently, the frequency range used by ultra-wide band (UWB) technology is 7163-8812MHz, which can also be referred to as the 8GHz UWB frequency band. The relevant regulations have certain requirements for the transmission signal bandwidth, equivalent isotropically radiated power spectral density limit and out-of-band emission power limit when communicating in the 8GHz UWB frequency band. For example, the transmission signal bandwidth is not less than 500MHz. Therefore, how to effectively use the current wireless communication device to send signals that meet the above UWB technology and meet the requirements of the relevant regulations is a problem that needs to be solved. SUMMARY

[0004] The present application provides a signal transmission method, apparatus and system, thereby using a wireless communication device to transmit a target signal with a larger bandwidth in a frequency band different from the current communication frequency band.

[0005] In a first aspect, a signal transmission method is provided, which can be applied to a first device, the first device being a wireless access device or a terminal device, and the method comprises: generating at least one target signal, and transmitting the at least one target signal in a first time period. The at least one target signal comprises a first signal and a second signal. The bandwidth of the target signal is greater than the bandwidth of the first signal. The power spectral density of the first signal is greater than or equal to the power spectral density of the second signal. The first time period comprises a plurality of time units, the frequency range occupied by the first signal in at least two time units is different, and the frequency range of the target signal in at least two time units is the same.

[0006] In the technical solution, the first device can generate at least one target signal, the at least one target signal includes the first signal and the second signal, and the bandwidth of the target signal is greater than the bandwidth of the first signal. Then, in the process of transmitting the at least one target signal, the first signal occupies different frequency ranges in at least two time units included in the time period of transmitting the target signal, that is, the first signal is transmitted in a frequency hopping manner. In this way, the first device can transmit the target signal in other frequency bands different from the current communication frequency band with a greater bandwidth, so that the first device supports communication in multiple frequency bands, and the frequency bands for communication of the first device are expanded. In addition, since the first signal occupies different frequency ranges in different time units, the anti-interference capability during communication is improved. When the power spectral density of the target signal meets the requirements of relevant regulations, and the power spectral density of the first signal is greater than the power spectral density of the second signal, the power consumption of the first device can be reduced.

[0007] For example, the first signal is a Wi-Fi signal, and the first device can transmit the first signal. The target signal generated by the first device according to the technical solution meets the relevant regulations of the UWB frequency band, so that the first device can communicate in the UWB frequency band. In this way, the same communication device can support communication in different frequency bands, thereby greatly improving the product competitiveness of the device.

[0008] In a possible implementation, the bandwidth of the first signal is the same as the bandwidth of the second signal.

[0009] In this way, the frequency range occupied by the first signal and the frequency range occupied by the second signal are exchanged with each other, the first signal occupies different frequency ranges in at least two time units, that is, the first device transmits the first signal in a frequency hopping manner, and the anti-interference capability during communication of the first device is improved.

[0010] In another possible implementation, the length of the time unit is greater than or equal to the length of the time of transmitting the target signal.

[0011] In another possible implementation, the at least one target signal includes two or more target signals; and the transmitting the at least one target signal in the first time period includes: transmitting the two or more target signals in the first time period, and the frequency range occupied by the first signal included in each of the two or more target signals is different.

[0012] Thus, the first signal of the two or more target signals generated by the first device occupies different frequency ranges, and the first signal occupies different frequency ranges in at least two time units when the first device transmits the target signals, so that the first device transmits the first signal in an inter-frame frequency hopping manner, which enables the first device to transmit a target signal with a larger bandwidth and expands the frequency band of the communication of the first device. In addition, since the first signal occupies different frequency ranges in different time units, the anti-interference capability during communication is improved.

[0013] In another possible implementation, the transmitting the at least one target signal in the first time period includes: transmitting two or more target signals in the first time period according to a first transmission rule, where the first transmission rule is used to indicate a transmission sequence of the two or more target signals.

[0014] For example, the at least one target signal includes a first target signal and a second target signal. The transmitting the at least one target signal in the first time period includes: alternately transmitting the first target signal and the second target signal in the first time period.

[0015] The first device transmits the two or more target signals according to a certain transmission rule, so that different devices transmit target signals using different transmission rules, thereby improving the anti-interference capability between devices.

[0016] In another possible implementation, the number of the two or more target signals is the same or similar in the first time period.

[0017] In another possible implementation, before the transmitting the two or more target signals according to the first transmission rule, the method further includes: transmitting indication information, where the indication information is used to indicate the first transmission rule.

[0018] The indication of the transmission rule of the two or more target signals for the second device enables the second device to quickly and effectively determine the first signal in the target signal according to the indication information, thereby ensuring that the second device can correctly receive and demodulate the first signal.

[0019] In another possible implementation, after the transmitting the two or more target signals, the method further includes: receiving two or more response signals, where the format of the two or more response signals is the same as the format of the target signals corresponding to the two or more response signals.

[0020] The response signal is received at the end of the first time period, so that the first device can transmit the at least one target signal as soon as possible, signaling interaction is reduced, the first device can transmit more data, and the utilization rate of time-frequency resources is improved.

[0021] In another possible implementation, the method further includes: after the transmitting the target signal, receiving a response signal corresponding to the target signal, where the format of the response signal is the same as the format of the target signal.

[0022] The first device sends a target signal, receives a response signal corresponding to the target signal, and knows whether the sending of the target signal is successful or not as soon as possible, so that the data transmission can be ensured to be successful.

[0023] In another possible implementation, the time length of the time unit is equal to the time length of one time slot in the time length of sending the target signal.

[0024] In another possible implementation, the at least one target signal includes a first target signal; and the sending of the at least one target signal in the first time period includes: sending the first target signal in the first time period, and the first signal occupies at least two frequency ranges in at least two time units.

[0025] Therefore, when the first device sends the first target signal, the first signal occupies different frequency ranges in multiple time slots in the time length of sending the target signal, so that the first device sends the first signal in a frequency hopping manner in a frame, and the first device can send a target signal with a larger bandwidth, and the frequency band of the communication of the first device is expanded; in addition, because the first signal occupies different frequency ranges in different time units, the anti-interference capability in communication is improved.

[0026] In another possible implementation, the method further includes: before the sending of the first signal and the second signal, sending a preamble, and a bandwidth of the preamble is equal to a sum of a bandwidth of the first signal and a bandwidth of the second signal.

[0027] In another possible implementation, the method further includes: before the sending of the first signal, sending a preamble, and a bandwidth of the preamble is equal to a bandwidth of the first signal, and the preamble and the first signal occupy the same frequency range.

[0028] The sending of the preamble before the sending of the first signal ensures that the second device can correctly receive and demodulate the first signal.

[0029] In another possible implementation, the first signal is an effective signal, and the second signal is a redundant signal.

[0030] In another possible implementation, the at least one target signal further includes a third signal; a bandwidth of the first signal is greater than a bandwidth of the third signal, and a power spectral density of the first signal is greater than or equal to a power spectral density of the third signal, and the third signal is a redundant signal.

[0031] The spectrum padding expands the frequency band of the communication of the first device, so that the first device supports communication on multiple frequency bands.

[0032] In a second aspect, a signal transmission method is provided, which can be applied to a second device, and the second device is a terminal device or a radio access device. The method comprises: receiving at least one target signal in a first time period, the at least one target signal comprising a first signal and a second signal, the bandwidth of the target signal being greater than the bandwidth of the first signal, the power spectral density of the first signal being greater than or equal to the power spectral density of the second signal, the first time period comprising a plurality of time units, the frequency range occupied by the first signal in at least two time units being different, and the frequency range of the target signal in the at least two time units being the same; and demodulating the first signal in the target signal.

[0033] In the above technical solution, the second device can receive at least one target signal, the at least one target signal comprising a first signal and a second signal, the bandwidth of the target signal being greater than the bandwidth of the first signal, the frequency range occupied by the first signal in at least two time units being different, i.e., the first signal is transmitted in a frequency hopping manner, and the second device receives the first signal in different frequency ranges in the at least two time units during the reception of the at least one target signal. In this way, the second device can receive the target signal transmitted by the first device in other frequency bands different from the current communication frequency band with a greater bandwidth, and no improvement or optimization is required for the second device, thereby reducing the cost of the device and improving the product competitiveness.

[0034] In a possible implementation, the bandwidth of the first signal is the same as the bandwidth of the second signal.

[0035] In another possible implementation, the length of the time unit is greater than or equal to the length of the target signal.

[0036] In another possible implementation, the at least one target signal comprises more than two target signals; and the receiving of the at least one target signal in the first time period comprises: receiving more than two target signals in the first time period, each of the more than two target signals comprising a first signal occupying a different frequency range.

[0037] In another possible implementation, the receiving of the at least one target signal in the first time period comprises: receiving more than two target signals according to a first transmission rule in the first time period, the first transmission rule being used to indicate the transmission order of the more than two target signals.

[0038] In another possible implementation, the number of the more than two target signals in the first time period is the same or similar.

[0039] In another possible implementation, before the receiving of the more than two target signals according to the first transmission rule, the method further comprises: receiving indication information, the indication information being used to indicate the first transmission rule.

[0040] In a possible implementation, after receiving the two or more target signals, the method further includes: sending two or more response signals, the format of the two or more response signals being the same as the format of the target signals corresponding to the two or more response signals.

[0041] In a possible implementation, the method further includes: after receiving the target signal, sending a response signal corresponding to the target signal, the format of the response signal being the same as the format of the target signal.

[0042] In a possible implementation, the length of the time unit is equal to the length of a time slot in the length of the time period for sending the target signal.

[0043] In a possible implementation, the at least one target signal includes a first target signal; and the receiving the at least one target signal in the first time period includes: receiving the first target signal in the first time period, the first signal occupying at least two or more frequency ranges in at least two time units.

[0044] In a possible implementation, the method further includes: before receiving the first signal and the second signal, receiving a preamble, the bandwidth of the preamble being the same as the sum of the bandwidth of the first signal and the bandwidth of the second signal.

[0045] In a possible implementation, the method further includes: before receiving the first signal, receiving a preamble, the bandwidth of the preamble being the same as the bandwidth of the first signal, the preamble and the first signal occupying the same frequency range.

[0046] In a possible implementation, the first signal is an effective signal, and the second signal is a redundant signal.

[0047] In a possible implementation, the at least one target signal further includes a third signal; the bandwidth of the first signal is greater than the bandwidth of the third signal, and the power spectral density of the first signal is greater than or equal to the power spectral density of the third signal, the third signal being a redundant signal.

[0048] In a third aspect, a signal transmission apparatus is provided, which is a first device or a chip applied to the first device, and can implement the functions performed by the first device in the above method. The functions can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

[0049] In a possible implementation of the third aspect, the apparatus includes a processing module and a communication module; the processing unit is configured to support the apparatus to perform the corresponding functions in the above method; and the communication module can be used to support the apparatus to communicate with a second device.

[0050] In a possible implementation form of the third aspect, the apparatus comprises a processor and a transceiver; the processor is configured to support the apparatus to perform the corresponding functions in the above method; and the transceiver is configured to support the apparatus to communicate with the second device. Optionally, the apparatus further comprises a memory configured to be coupled to the processor, and to store program instructions and data necessary for the apparatus.

[0051] In a possible implementation form of the fourth aspect, the apparatus comprises a processing module and a communication module; the processing unit is configured to support the apparatus to perform the corresponding functions in the above method; and the receiving unit is configured to support the apparatus to communicate with the first device.

[0052] In a possible implementation form of the fourth aspect, the apparatus comprises a processing module and a communication module; the processing unit is configured to support the apparatus to perform the corresponding functions in the above method; and the receiving unit is configured to support the apparatus to communicate with the first device.

[0053] In a possible implementation form of the fourth aspect, the apparatus comprises a processor and a transceiver; the processor is configured to support the apparatus to perform the corresponding functions in the above method; and the transceiver is configured to support the apparatus to communicate with the first device. Optionally, the apparatus further comprises a memory configured to be coupled to the processor, and to store program instructions and data necessary for the apparatus.

[0054] In a possible implementation form of the fourth aspect, the apparatus comprises a processing module and a communication module; the processing unit is configured to support the apparatus to perform the corresponding functions in the above method; and the receiving unit is configured to support the apparatus to communicate with the first device.

[0055] In a possible implementation form of the fourth aspect, the apparatus comprises a processing module and a communication module; the processing unit is configured to support the apparatus to perform the corresponding functions in the above method; and the receiving unit is configured to support the apparatus to communicate with the first device.

[0056] In a possible implementation form of the fourth aspect, the apparatus comprises a processing module and a communication module; the processing unit is configured to support the apparatus to perform the corresponding functions in the above method; and the receiving unit is configured to support the apparatus to communicate with the first device.

[0057] In an eighth aspect, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program or instructions, and when the computer program or instructions are executed, the method provided in the second aspect or any possible implementation manner of the second aspect is implemented.

[0058] In a ninth aspect, a computer program product is provided, and the computer program product includes: a computer program (also referred to as code or instructions), and when the computer program is executed, the computer program causes a computer to execute the method provided in the first aspect or any possible implementation manner of the first aspect.

[0059] In a tenth aspect, a computer program product is provided, and the computer program product includes: a computer program (also referred to as code or instructions), and when the computer program is executed, the computer program causes a computer to execute the method provided in the second aspect or any possible implementation manner of the second aspect.

[0060] The technical effects brought by any design manner of the second aspect to the tenth aspect can refer to the technical effects brought by the first aspect or different design manners of the first aspect, and will not be described here.

[0061] On the basis of the implementation manners of the above aspects, the present application can be further combined to provide more implementation manners. BRIEF DESCRIPTION OF DRAWINGS

[0062] FIG. 1 is a schematic diagram of a Wi-Fi signal transmission spectrum template provided by the present application;

[0063] FIG. 2 is a schematic diagram of an out-of-band emission power limit corresponding to an 8 GHz UWB frequency band provided by the present application;

[0064] FIG. 3 is a schematic diagram of the structure of a wireless communication system provided by the present application;

[0065] FIG. 4 is a schematic diagram of the structure of a wireless communication device provided by the present application;

[0066] FIG. 5 is a schematic diagram of the structure of a target signal provided by the present application;

[0067] FIG. 6 is a schematic diagram of another target signal provided by the present application;

[0068] FIG. 7 is a schematic diagram of the flow of a signal transmission method provided by the present application;

[0069] FIG. 8 is a schematic diagram of an inter-frame frequency hopping manner provided by the present application;

[0070] FIG. 9 is a schematic diagram of an intra-frame frequency hopping manner provided by the present application;

[0071] FIG. 10 is a schematic diagram of a preamble provided by the present application;

[0072] FIG. 11 is a schematic diagram of an amplitude-frequency response of a filter provided by the present application in an UWB frequency band;

[0073] FIG. 12 is a schematic diagram of a response signal provided by the present application;

[0074] FIG. 13 is a schematic diagram of a structure of a signal transmission device provided by the present application;

[0075] FIG. 14 is a schematic diagram of a structure of another signal transmission device provided by the present application. DETAILED DESCRIPTION

[0076] For the convenience of understanding, the main terms involved in the present application are first explained.

[0077] Ultra-wide band (UWB) technology is a wireless carrier communication technology that can transmit data by using nanosecond-level non-sine wave narrow pulses, so the occupied frequency spectrum range is very wide. The UWB technology has the characteristics of low system complexity, low transmit signal power spectrum density, insensitivity to channel fading, low interception ability, and high positioning accuracy, and can be applied to short-distance high-speed wireless data communication, positioning, ranging, sensing, and other fields.

[0078] The frequency range used by the UWB technology is 7163-8812MHz, which can also be referred to as an 8GHz UWB frequency band. At present, relevant regulations have certain requirements for the transmit signal bandwidth, equivalent isotropically radiated power spectrum density limit value, and out-of-band transmit power limit value when communicating in the 8GHz UWB frequency band. For example, the power spectrum density is required to drop by-10dB, the corresponding transmit signal bandwidth is not less than 500MHz, the equivalent isotropically radiated power spectrum density limit value is not greater than-41dBm / MHz, and the transmit power limit value of different frequency ranges out of the band is shown in Table 1 below. In the following Table 1, the detection method is taken as an example of root mean square (RMS) detection.

[0079] Table 1

[0080] Currently, wireless communication devices supporting other communication protocols cannot be directly used for communication in the 8GHz UWB frequency band due to limitations of working frequency bands, transmit power limits, and maximum transmit signal bandwidth, etc. For example, a wireless fidelity (Wi-Fi) protocol (such as 802.11a / b / g / n / ac / ax / be / bn) has a working frequency of 2.4GHz, 5GHz, or 6GHz, and the corresponding wireless communication device cannot support receiving and transmitting signals in the 8GHz UWB frequency band. The main reasons are as follows: first, the maximum transmit signal bandwidth is 320MHz, which is less than 500MHz and does not meet the requirement of the transmit signal bandwidth of the 8GHz UWB frequency band; second, the transmit spectral mask of the Wi-Fi signal does not meet the regulation of the out-of-band transmit power limit corresponding to the 8GHz UWB frequency band. FIG. 1 shows a schematic diagram of a transmit spectral mask of a Wi-Fi signal, in which the horizontal axis represents frequency and the corresponding unit is MHz, and the vertical axis represents power spectral density (PSD) and the corresponding unit is dBr. FIG. 2 shows a schematic diagram of the out-of-band transmit power limit corresponding to the 8GHz UWB frequency band, in which the horizontal axis represents frequency and the corresponding unit is M (i.e., MHz), the unit of the transmit power limit corresponding to different frequencies is dBm / MHz, CH8, CH9, and CH10 represent different channel numbers. Therefore, how to effectively use the current wireless communication device to realize communication in the UWB frequency band and meet the requirements of relevant regulations is a problem to be solved.

[0081] Based on this, the present application provides a signal transmission method, which can use a wireless communication device supporting a smaller transmit signal bandwidth to transmit a larger bandwidth signal 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.

[0082] The technical solutions provided by the embodiments of the present application can be applied to various wireless communication systems. For example, the wireless communication system can include, but is not limited to, a Wi-Fi communication system, a long time evolution (LTE) system, a frequency division duplex (FDD) system, a time division duplex (TDD) system, a code division multiple access (CDMA) system, a universal mobile telecommunication system (UMTS), a worldwide interoperability for microwave access (WiMAX) communication system, a public land mobile network (PLMN) system, a 5G communication system, a hybrid networked communication system, or a future communication system, etc. The technical solutions of the present application can include various application scenarios, such as enhanced mobile broadband (eMBB), ultra reliable & low latency communication (uRLLC), massive machine type communication (mMTC), etc.

[0083] The wireless communication system and application scenarios described in the embodiments of the present application are used to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those skilled in the art can know that, as the communication system evolves and new application scenarios appear, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.

[0084] It should be understood that in the wireless communication system, devices can be divided into devices providing wireless network services and devices using wireless network services. The above-mentioned devices providing wireless network services can also be referred to as network devices or network elements, for example, the network devices include wireless access devices. The above-mentioned devices using wireless network services are usually located at the edge of the network and can be referred to as terminal devices or simply terminals. The terminal device can establish a connection with the network device and provide wireless communication services for users based on the services of the network device. In the following, the structure of the wireless communication system is illustrated by taking the wireless communication system as an example, which includes wireless access devices and terminal devices.

[0085] FIG. 3 is a schematic diagram of a structure of a wireless communication system provided by the present application, which can include a wireless access device 10 and a terminal device 20 that can perform wireless communication with the wireless access device 10. In the wireless communication system, the wireless access device 10 can provide communication coverage for a specific geographic area through an integrated or external antenna device, and the terminal device 20 located in the communication coverage of the wireless access device 10 can access the wireless access device 10 and perform communication with the wireless access device 10.

[0086] Optionally, the wireless access device 10 can include a base station, which can also be referred to as a wireless access point (AP) or a transmission reception point (TRP). In one possible example, the base station can be a general Node B (gNB) in a 5G new radio (NR) system, an evolutional Node B (eNB) in a 4G long term evolution (LTE) system, or the like. According to different physical forms or transmission powers of the base station, the base station can be classified as a macro base station or a micro base station, which can also be referred to as a small base station or a small cell.

[0087] Optionally, the terminal device 20 can include, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a desktop computer, a palm computer, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), a netbook, a video camera, a camera, a wearable device (for example, a smart watch and a smart bracelet, etc.), a vehicle-mounted device (for example, a car, a bicycle, an electric vehicle, an airplane, a ship, a train, a high-speed rail, etc.), a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a smart home device (for example, a refrigerator, a television, an air conditioner, an electricity meter, etc.), a smart robot, a workshop device, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, or a wireless terminal in a smart home, a flight device (for example, a smart robot, a hot air balloon, a drone, an airplane), etc.

[0088] In the embodiments of the present application, the wireless access device 10 and the terminal device 20 described above can be referred to as a wireless communication device. The structure of the wireless communication device will be described below by taking a mobile phone as an example.

[0089] FIG. 4 is a structural schematic diagram of a wireless communication device provided by the present application. The wireless communication device can include radio frequency (RF) circuit 110, memory 120, input unit 130, display unit 140, sensor 150, audio circuit 160, processor 170, and power supply 180, etc.

[0090] The RF circuit 110 can be used to transmit and receive information, or receive or send signals during a call. In particular, after receiving the downlink information of the base station, the processor 170 is processed; in addition, the uplink data is sent to the base station. Generally, 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. In addition, the RF circuit 110 can also communicate with the network and other devices through wireless communication.

[0091] The memory 120 can be used to store data, software programs, and modules, including a storage program area and a storage data area, wherein the storage program area can store an operating system, application programs required for at least one function, such as a sound play function, an image play function, etc., and the storage data area can store data created according to the use of the wireless communication device, such as audio data, image data, a phonebook, etc. In addition, the wireless communication device can include a high-speed random access memory, and can further include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state memory device. In the embodiments of the present application, the memory can include a plurality of memories, including a first memory and a second memory.

[0092] The input unit 130 can be used to receive inputted digital or character information, and to generate key signal inputs related to the user settings and function controls of the wireless communication device. The input unit 130 can include a touch screen 131 and other input devices 132. The touch screen 131 can collect touch operations of a user thereon or therearound, and drive corresponding connection devices according to a pre-set program. For example, the touch operations can include operations of a user using a finger, a stylus, or any suitable object or accessory on or near the touch screen. Alternatively, the other input devices 132 can include one or more of, but are not limited to, a physical keyboard, function keys, a trackball, a mouse, a joystick, etc., such as the function keys including a volume control button, a power on / off button, etc.

[0093] The display unit 140 can be used to display information inputted by a user or provided to a user, and various menus of the wireless communication device, etc. In one example, the display unit 140 can include a display screen 141, which can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. Further, the touch screen 131 can cover the display screen 141, and when the touch screen 131 detects a touch operation thereon or therearound, transmits to the processor 170 to determine the type of the touch event, and then the processor 170 provides a corresponding visual output on the display screen 141 according to the type of the touch event. Although in the figure, the touch screen 131 and the display screen 141 are implemented as two independent components to realize the input and output functions of the wireless communication device, in some embodiments, the touch screen 131 and the display screen 141 can be integrated to realize the input and output functions of the wireless communication device.

[0094] The sensors 150 can include one or more sensors for providing various aspects of state assessment for the wireless communication device. Among other things, the sensors 150 can include a light sensor that can be used in imaging applications, i.e., as part of a camera or video camera. In addition, the sensors 150 can also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor, through which acceleration / deceleration, orientation, open / close status, relative positioning of components, or temperature changes of the wireless communication device can be detected.

[0095] The audio circuit 160, speaker, and microphone can provide an audio interface between a user and the wireless communication device. The audio circuit 160 can convert received audio data into an electrical signal, which is transmitted to the speaker for conversion into an audible signal output. On the other hand, the microphone collects sound signals, which are converted into an electrical signal by the audio circuit 160, converted into audio data, and output to the RF circuit 110 for transmission to, for example, another phone, or to the memory 120 for further processing.

[0096] The processor 170 is the control center of the wireless communication device, connects all parts of the wireless communication device through various interfaces and lines, performs various functions of the wireless communication device and processes data by running or executing software programs and / or modules stored in the memory 120 and calling data stored in the memory 120, thereby overall controlling the wireless communication device. Optionally, the processor 170 can include one or more processing units, which can include but are not limited to: a central processing unit (CPU), a network processing unit (NPU), a graphic 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, etc. Further, the processor 170 can also include other hardware circuits or accelerators, such as an application specific integrated circuit (ASIC), a complex programmable logic device (CPLD) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Optionally, the processor 170 can also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, etc.

[0097] The wireless communication device can also include a power supply 180 (such as a battery) to supply power to various components. The power supply 180 can be logically connected to the processor 170 through a power management system, so that the power management system can realize functions such as management of charging, discharging, and power consumption management. Optionally, the power management system can support both fast charging technology and non-fast charging technology, and in actual application, the power management system can charge the battery in the power supply 180 through fast charging technology, or charge the battery in the power supply 180 through non-fast charging technology.

[0098] Optionally, the wireless communication device can also include a Wi-Fi module, a Bluetooth module, etc., which will not be described herein. Those skilled in the art can understand that the structure of the wireless communication device shown in the figure does not constitute a limitation on the wireless communication device, and can include more or fewer components than shown, or combine certain components, or different component arrangements.

[0099] Next, the implementation of the wireless communication device supporting other communication protocols in the UWB frequency band is described.

[0100] In the embodiments of the present application, the wireless communication device can pad the signal with a smaller transmission signal bandwidth (referred to as bandwidth) to expand the transmission signal bandwidth, so that the wireless communication device can transmit a signal with a larger bandwidth, and meet the requirements of relevant regulations on parameters such as transmission signal bandwidth and in-band and out-of-band transmission power limits.

[0101] In some embodiments, the wireless communication device pads the first signal to generate at least one target signal. The target signal includes the first signal and a second signal, and the bandwidth of the target signal is greater than the bandwidth of the first signal. The first signal is a signal that can be transmitted in the first frequency band. This enables the wireless communication device supporting communication in the first frequency band to communicate in the second frequency band, thereby expanding the frequency band of the wireless communication device communication.

[0102] In the target signal, the bandwidth of the first signal and the bandwidth of the second signal are the same. The power spectral density of the first signal is greater than or equal to the power spectral density of the second signal. The target signal can contain one or more second signals with the same bandwidth as the first signal. The plurality of second signals can be located on one side of the first signal as a whole. The plurality of second signals can also be located on both sides of the first signal respectively.

[0103] Each of the two or more target signals includes a first signal occupying a different frequency range.

[0104] Optionally, the target signal further includes a third signal. The bandwidth of the third signal is smaller than the bandwidth of the first signal. The power spectral density of the first signal is greater than or equal to the power spectral density of the third signal.

[0105] Optionally, the first signal can be an effective signal, and the first signal carries the required transmission data. The second signal and the third signal can be redundant signals, including at least one of the following: a random signal, a copy of the random signal, and a copy of at least part of the first signal. The second signal and the third signal can carry redundant data. The redundant data can be a random number or a copy of the data in the first signal.

[0106] For example, the wireless communication device generates at least one target signal according to the bandwidth of the target signal and the bandwidth of the first signal. For example, assuming that the bandwidth of the target signal is N, i.e., the expanded bandwidth is N, and the bandwidth of the first signal is M, then at most target signals can be designed. Wherein, represents the floor function, K is an integer, and K is not less than 2.

[0107] It can be understood that the target signal can include one first signal and (K-1) second signals.

[0108] When N-K*M>0, it means that the bandwidth of the target signal is greater than the bandwidth of the K first signals, and it is further required to fill the remaining bandwidth of (N-K*M) in the bandwidth N of the target signal by inserting a redundant signal. The bandwidth of the third signal is equal to the difference between the target bandwidth and the sum of the bandwidth of the first signal and the bandwidth of the second signal. (N-K*M) represents the bandwidth of the third signal. At this time, the target signal includes one first signal, (K-1) second signals and a third signal. The bandwidth of the target signal is equal to the sum of the bandwidth of the first signal, the bandwidth of the second signal and the bandwidth of the third signal. Alternatively, the third signal can be divided into two sub-signals located on both sides of the bandwidth of (K*M).

[0109] When N-K*M=0, it means that the bandwidth of the target signal is equal to the bandwidth of the K first signals. The wireless communication device does not need to insert other redundant signals. At this time, the target signal includes one first signal and (K-1) second signals. 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.

[0110] For the convenience of understanding, the following takes the first frequency band as the Wi-Fi frequency band and the second frequency band as the UWB frequency band as an example to illustrate the process of generating a target signal by a wireless communication device.

[0111] In the first possible implementation, assuming that the bandwidth of the target signal is 500MHz and the bandwidth of the first signal is 160MHz, K≤3. For example, the wireless communication device can generate two target signals (K=2) or three target signals (K=3).

[0112] When K=2, as shown in (a) of FIG. 5, the wireless communication device inserts first padding1 and second padding2 on both sides of the first signal, and the second padding2 forms a second signal and the first padding1 forms a third signal. The bandwidth of the first signal and the bandwidth of the second signal are both 160MHz. The transmission power of the first signal is P1, the transmission power of the second signal is P2, and P1>P2≥0.

[0113] The bandwidth of the third signal is equal to the difference between the target bandwidth and the sum of the bandwidth of the first signal and the bandwidth of the second signal, such as 500-160*2=180MHz, that is, the bandwidth of the third signal is 180MHz. The 180MHz third signal is divided into two 90MHz sub-signals located on both sides of the bandwidth of the first signal, so that a target signal with a bandwidth of 500MHz is obtained.

[0114] The first target signal and the second target signal each include the first signal, the second signal and the third signal. The first target signal and the second target signal differ in that the first signal occupies different frequency ranges.

[0115] When K = 3, as shown in (b) of FIG. 5, the difference from (a) of FIG. 5 is that the wireless communication device inserts 2 second redundant data on both sides of the first signal, and the 2 second redundant data form 2 second signals.

[0116] The bandwidth of the third signal depends on the difference between the target bandwidth and the sum of the bandwidth of the first signal and the bandwidth of the second signal, i.e. 500-160*3 = 20MHz, which means the bandwidth of the third signal is 20MHz. The 20MHz third signal is divided into two 10MHz sub-signals, which are located on both sides of the bandwidth of the first signal, so that the target signal with a bandwidth of 500MHz is obtained.

[0117] The first target signal, the second target signal and the third target signal each include the first signal, 2 second signals and the third signal. The first target signal, the second target signal and the third target signal differ in that the first signal occupies different frequency ranges.

[0118] In the second possible implementation, assuming that the bandwidth of the target signal is 640MHz and the bandwidth of the first signal is 160MHz, K ≤ 4. For example, the wireless communication device can generate four target signals (K = 4).

[0119] When K = 4, as shown in FIG. 6, the wireless communication device inserts 3 second redundant data on both sides of the first signal, and the 3 second redundant data form 3 second signals. The four target signals each include the first signal and 3 second signals. The four target signals do not include the third signal. The four target signals differ in that the first signal occupies different frequency ranges.

[0120] Optionally, when K = 1, N-1*M > 0, and N < 2*M, it means that the bandwidth of the target signal is greater than the bandwidth of one first signal and less than the bandwidth of two first signals. The wireless communication device fills the remaining bandwidth of N-M in the bandwidth N of the target signal by inserting redundant signals. The target signal does not include the second signal. At this time, the target signal includes one first signal and a third signal. The bandwidth of the target signal is equal to the sum of the bandwidth of the first signal and the bandwidth of the third signal. The bandwidth of the third signal is less than the bandwidth of the first signal. Optionally, the third signal can be located on one side of the first signal as a whole, or the third signal can be divided into two sub-signals and located on both sides of the first signal.

[0121] In a third possible implementation, assuming that the bandwidth of the target signal is 500 MHz and the bandwidth of the first signal is 320 MHz, K≤1. For example, the wireless communication device can generate 1 target signal (K=1).

[0122] The wireless communication device inserts 1 first redundancy data into the first signal, and the first redundancy data forms a third signal, and the bandwidth of the third signal is 180 MHz. The 180 MHz third signal is divided into two 90 MHz sub-signals, which are located on both sides of the bandwidth of the first signal, so that the target signal with a bandwidth of 500 MHz is obtained.

[0123] The above embodiments describe the format of the target signal provided by the embodiments of the present application. The following describes the implementation of the wireless communication device in the UWB frequency band.

[0124] FIG. 7 is a flowchart of a signal transmission method provided by the present application. The 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. For example, the first device and the second device can be the devices shown in FIG. 3. The first device can be a wireless access device, and the second device can be a terminal device. Alternatively, 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 one of a wireless access device or a terminal device, and the second device can be the other of the wireless access device or the terminal device. The method includes the following steps.

[0125] In step 710, the first device generates at least one target signal.

[0126] The first device can perform spectrum filling on a signal with a smaller transmission signal bandwidth, expand the transmission signal bandwidth, generate a signal with a larger bandwidth, and be capable of transmitting a signal with a larger bandwidth, so as to meet the requirements of relevant regulations on parameters such as the transmission signal bandwidth and the transmission power limit value inside and outside the band. For example, the first device can generate a signal that meets the requirements of relevant regulations on parameters such as the transmission signal bandwidth and the transmission power limit value inside and outside the band in the UWB frequency band.

[0127] In some embodiments, the first device performs spectrum filling based on the first signal to generate at least one target signal.

[0128] The target signal can be a signal obtained by performing spectrum expansion on the first signal. The bandwidth of the target signal is greater than the bandwidth of the first signal. The target signal includes the first signal and a second 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. The bandwidth of the first signal is the same as the bandwidth of the second signal. The power spectral density of the first signal is greater than or equal to the power spectral density of the second signal.

[0129] 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 requirements of the relevant regulations for the transmitted signal on the first frequency band. For example, the first frequency band is a Wi-Fi frequency band, and the first signal meets the requirements of the relevant regulations for the transmitted signal on the Wi-Fi frequency band. The above first signal or the signal that can be transmitted on the first frequency band can be referred to as a Wi-Fi signal.

[0130] Exemplarily, the first signal is a Wi-Fi signal, the bandwidth of the first signal is 320 MHz, 160 MHz, 80 MHz, 40 MHz, or 20 MHz, the bandwidth of the target signal is close to 500 MHz, or the bandwidth of the target signal is greater than or equal to 500 MHz.

[0131] The first signal included in each of the two or more target signals generated by the first device occupies a different frequency range.

[0132] The signal transmission method provided by the embodiments of the present application expands the power spectral density of the signal by inserting a redundant signal and combining a frequency hopping manner, or expands the bandwidth of the signal, so that the wireless communication device meets the requirements of the relevant regulations for the bandwidth of the transmitted signal in the UWB frequency band.

[0133] In some embodiments, the first device can generate at least one target signal according to the transmitted signal bandwidth of the target signal and the frequency hopping granularity. The bandwidth of the first signal contained in the target signal can be equal to the frequency hopping granularity, so that the first device transmits the at least one target signal in a frequency hopping manner within the bandwidth of the target signal. The frequency hopping granularity can be determined according to the bandwidth capability of the wireless communication device.

[0134] For example, the first device is used for communication in the Wi-Fi frequency band and supports the requirements of the relevant regulations for the transmitted signal on the Wi-Fi frequency band. The frequency hopping granularity of Wi-Fi transmitters with different bandwidth capabilities is shown in Table 2 below.

[0135] Table 2 Frequency hopping granularity of Wi-Fi transmitters with different bandwidth capabilities

[0136] As can be seen from Table 2, the Wi-Fi transmitter supports a bandwidth of 320 MHz, and the frequency hopping granularity can be 160 MHz, 80 MHz, 40 MHz, or 20 MHz. The Wi-Fi transmitter supports a bandwidth of 160 MHz, and the frequency hopping granularity can be 80 MHz, 40 MHz, or 20 MHz. The Wi-Fi transmitter supports a bandwidth of 80 MHz, and the frequency hopping granularity can be 40 MHz or 20 MHz. The Wi-Fi transmitter supports a bandwidth of 40 MHz, and the frequency hopping granularity can be 20 MHz.

[0137] The first device can generate at least one target signal according to the method of generating a target signal described in the above embodiments. For example, the format of the target signal can be as shown in FIG. 5 and FIG. 6. The method of generating a target signal and the format of the target signal can refer to the description of the above embodiments, and will not be repeated here.

[0138] At step 720, the first device transmits at least one target signal in the first time period.

[0139] The first time period includes a plurality of time units, and the frequency range occupied by the first signal in at least two time units is different, so that when the first device transmits at least one target signal, the first signal is transmitted in a frequency hopping manner within the bandwidth of the target signal, thereby expanding the target signal that the first device can transmit to a larger bandwidth, so that the first device supports communication on multiple frequency bands, and because the frequency range occupied by the first signal in different time units is different, the anti-interference ability of the first device when communicating is improved. Wherein the first device transmits the first signal in a frequency hopping manner within the bandwidth of the target signal, that is, the frequency range occupied by the first signal in different time units within the frequency spectrum bandwidth of the target signal is different, and the frequency range of the target signal in at least two time units is the same. Even if the frequency range of the target signal is offset, the frequency range of the target signal in each time unit will be offset, and the offset frequency range is the same.

[0140] In a first possible example, the first device generates more than two target signals, and the at least one target signal includes more than two target signals. Each of the more than two target signals includes a first signal occupying a different frequency range.

[0141] The first device transmits more than two target signals to implement transmitting the first signal in an inter-frame frequency hopping manner. In the first time period, the first device transmits more than two target signals. Then in different time units, the first device transmits target signals including first signals occupying different frequency ranges. Wherein the time length of the time unit can refer to the time length of the target signal. For example, the time length of the time unit is greater than or equal to the time length of transmitting the target signal.

[0142] In some embodiments, in the first time period, the first device transmits more than two target signals according to a first transmission rule. The first transmission rule is used to indicate the transmission order of the more than two target signals.

[0143] For example, the at least one target signal includes a first target signal and a second target signal. As shown in (a) of FIG. 8, in the first time period, the first device alternately transmits the first target signal and the second target signal, i.e., the first device alternately transmits the first target signal and the second target signal in the order of the first target signal, the second target signal, the first target signal, and the second target signal. Since the first signal included in the first target signal occupies a different frequency range from the first signal included in the second target signal, when the first device alternately transmits the first target signal and the second target signal, the first signal is transmitted in an inter-frame frequency hopping manner, i.e., the first signal occupies different frequency ranges in different time units. For example, in the t1 time period, when the first device transmits the first target signal, the first signal included in the first target signal occupies the second frequency range, and in the t2 time period, when the first device transmits the second target signal, the first signal included in the second target signal occupies the first frequency range.

[0144] As shown in (b) of FIG. 8, in the first time period, the first device transmits the first target signal and the second target signal in the order of the first target signal, the first target signal, the second target signal, and the second target signal. Similarly, the first signal included in each of the first target signal and the second target signal occupies a different frequency range. Thus, when the first device transmits the first target signal and the second target signal in this order, the first signal is transmitted in an inter-frame frequency hopping manner, i.e., the first signal occupies different frequency ranges in different time units. For example, in the t1 time period, when the first device transmits the first target signal, the first signal included in the first target signal occupies the second frequency range, in the t2 time period, when the first device transmits the first target signal, the first signal included in the first target signal occupies the second frequency range, in the t3 time period, when the first device transmits the second target signal, the first signal included in the second target signal occupies the first frequency range, and in the t4 time period, when the first device transmits the second target signal, the first signal included in the second target signal occupies the first frequency range.

[0145] Therefore, the first signal included in the two or more target signals generated by the first device occupies different frequency ranges, and when the first device transmits these target signals, the first signal occupies different frequency ranges in at least two time units, so that the first device transmits the first signal in an inter-frame frequency hopping manner, which enables the first device to transmit a target signal with a larger bandwidth and expand the frequency band of the communication of the first device. In addition, since the first signal occupies different frequency ranges in different time units, the anti-interference capability during communication is improved.

[0146] Optionally, before the first device transmits the two or more target signals according to the first transmission rule, the first device can further transmit indication information. The indication information is used to indicate the first transmission rule. Indicating the second device the transmission rule of the two or more target signals can enable the second device to quickly and effectively determine the first signal from the target signals according to the indication information, thereby ensuring that the second device can correctly receive and demodulate the first signal.

[0147] To further improve the anti-interference ability of the transmitted signal and improve the communication security, the frequency bands of frequency hopping can be encoded. For example, the first target signal is marked as 0, and the second target signal is marked as 1. The first device and the second device can negotiate to comply with the frequency hopping sequence for frequency hopping. The frequency hopping sequence includes but is not limited to 10101010, 11001100, and 01001101. The present application does not limit the frequency hopping order of the plurality of target signals in the frequency hopping sequence. It should be noted that different pairs of wireless communication devices (such as the first device and the second device pair, and the third device and the fourth device pair) can use different frequency hopping sequences. For example, different pairs of wireless communication devices can negotiate to use different frequency hopping sequences. For example, the indication information transmitted by the wireless communication device can include the frequency hopping sequence. For another example, each randomly selects a frequency hopping sequence, and the device transmitting the target signal informs the device receiving the target signal of the frequency hopping sequence used by the device. Thus, the probability of interference between different pairs of wireless communication devices is reduced, and mutual synchronization is not required.

[0148] In a second possible example, the first device generates one target signal, and the at least one target signal includes one target signal. The first signal included in the one target signal occupies at least two or more frequency ranges in at least two time units.

[0149] The first device transmits the target signal to implement the transmission of the first signal in the intra-frame frequency hopping manner. In the first time period, the first device transmits one target signal. In different time units of the first time period, the first device transmits the first signal included in the target signal to occupy at least two or more frequency ranges in at least two time units. The time length of the time unit can refer to the time length of one time slot in the time length of transmitting the target signal. For example, the time length of the time unit is equal to the time length of one time slot in the time length of transmitting the target signal.

[0150] For example, the at least one target signal includes the first target signal. As shown in FIG. 9, in the first time period, the first device transmits the first target signal. In the t1 time period and the t3 time period, when the first device transmits the first target signal, the first signal included in the first target signal occupies the first frequency range. In the t2 time period and the t4 time period, when the first device transmits the first target signal, the first signal included in the first target signal occupies the second frequency range.

[0151] Optionally, during the first time period, the first device can send a plurality of first target signals, each of the first target signals sent by the first device is implemented in a manner of intra-frame frequency hopping, i.e., the first signal contained in each of the first target signals occupies at least two frequency ranges in at least two time units. The first target signal can be any one of the two or more target signals generated by the first device, which is not limited in the present application.

[0152] Thus, when the first device sends the first target signal, the first signal occupies different frequency ranges in a plurality of time slots in the time length of sending the target signal, and the first device sends the first signal in a manner of intra-frame frequency hopping, so that the first device can send a target signal with a larger bandwidth, and the frequency band of communication of the first device is expanded. In addition, since the first signal occupies different frequency ranges in different time units, the anti-interference capability during communication is improved.

[0153] The present application does not limit the frequency ranges occupied by the first signal in the at least two time units in the intra-frame frequency hopping scheme in which the first target signal contains the first signal.

[0154] Optionally, the scheme of sending the first signal in an inter-frame frequency hopping manner and the scheme of sending the first signal in an intra-frame frequency hopping manner can also be used in combination. For example, the first device sends two or more target signals, and the first signal occupies different frequency ranges in different target signals, and the first signal is sent in an inter-frame frequency hopping manner. When the first device sends each target signal, the first signal contained in each target signal also occupies different frequency ranges.

[0155] Optionally, before the first device sends the two or more target signals according to the first sending rule, the first device can also send indication information. The indication information is used to indicate the frequency ranges occupied by the first signal in the at least two time units. The sending rule of indicating the frequency ranges occupied by the first signal in the at least two time units in the target signal of the second device can enable the second device to quickly and effectively determine the first signal in the target signal according to the indication information, so as to ensure that the second device can correctly receive and demodulate the first signal.

[0156] Different pairs of wireless communication devices (such as: the pair of the first device and the second device, the pair of the third device and the fourth device) can adopt different intra-frame frequency hopping manners, i.e., the first signals sent by different pairs of wireless communication devices occupy different frequency ranges in at least two time units. Thus, the probability of mutual interference between different pairs of wireless communication devices is reduced.

[0157] In some other embodiments, before the first device sends the first signal and the second signal, the first device can also send a preamble first.

[0158] The first device transmits the first signal in an inter-frame frequency hopping manner or an intra-frame frequency hopping manner. The bandwidth of the preamble is the same as the bandwidth of the first signal, and the preamble and the first signal occupy the same frequency range. For example, as shown in (a) of FIG. 10, when the first device transmits more than two target signals, the first device transmits the first signal in an inter-frame frequency hopping manner. Before the first signal for transmitting the first target signal, the preamble is transmitted. Before the first signal for transmitting the second target signal, the preamble is transmitted. When the first device transmits the target signal, the first device transmits the first signal in an intra-frame frequency hopping manner. In each time unit in which the first signal is transmitted, the preamble is transmitted first. Understandably, the first device transmits the preamble according to the intra-frame frequency hopping manner of transmitting the first signal.

[0159] The first device transmits the first signal in an intra-frame frequency hopping manner when the first device transmits the target signal. The bandwidth of the preamble is the same as the sum of the bandwidth of the first signal and the bandwidth of the second signal. As shown in (b) of FIG. 10, when the first device transmits the target signal, the first device transmits the first signal in an intra-frame frequency hopping manner. Before the first signal and the second signal are transmitted, the preamble is transmitted first.

[0160] The first device can transmit at least one target signal on a second frequency band. The frequency range corresponding to the second frequency band is different from the frequency range corresponding to the first frequency band. For example, the first frequency band is smaller than the second frequency band. Optionally, the first frequency band is a frequency band with a smaller requirement for the bandwidth of a transmitted signal, and the second frequency band is a frequency band with a larger requirement for the bandwidth of a transmitted signal. For example, the first frequency band is a 2.4 GHz Wi-Fi frequency band, a 5 GHz Wi-Fi frequency band, or a 6 GHz Wi-Fi frequency band, the second frequency band is an 8G UWB frequency band, the bandwidth of the first signal is 320 MHz, 160 MHz, 80 MHz, 40 MHz, or 20 MHz, the bandwidth of the target signal is close to 500 MHz, or the bandwidth of the target signal is greater than or equal to 500 MHz.

[0161] The duration of the first time period is not limited in the application. For example, the duration of the first time period can be 1 ms.

[0162] In step 730, the second device receives at least one target signal in the first time period.

[0163] The at least one target signal includes the first signal and the second signal, the bandwidth of the target signal is greater than the bandwidth of the first signal, the first time period includes a plurality of time units, the frequency range occupied by the first signal in at least two time units is different, and the frequency range of the target signal in at least two time units is the same.

[0164] The target signal is a signal that can be transmitted on the second frequency band, i.e., the target signal meets the requirements of relevant regulations on the transmission signal on the second frequency band. For example, the second frequency band is a UWB frequency band, and the target signal meets the requirements of relevant regulations on the transmission signal bandwidth, equivalent isotropically radiated power spectral density limit, and out-of-band emission power limit on the UWB frequency band described above. The second device can receive at least one target signal.

[0165] When the first device transmits more than two target signals to implement the inter-frame frequency hopping transmission of the first signal, the second device correspondingly receives more than two target signals, and each target signal includes the first signal occupying a different frequency range.

[0166] When the first device transmits a target signal to implement the intra-frame frequency hopping transmission of the first signal, the second device correspondingly receives the target signal. The target signal contains the first signal occupying at least two frequency ranges in at least two time units.

[0167] Optionally, in the target signal, the power spectral density of the first signal is greater than or equal to 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. The power spectral density threshold can include different values at different frequencies. That is, the power spectral density of the target signal can meet the power spectral density threshold required by relevant regulations, and the power spectral density of the second signal is relatively small, which can reduce the transmission power of the second signal and thus reduce the energy consumption of the first device.

[0168] For example, taking the second frequency band as a UWB frequency band and the target signal as a signal transmitted on the UWB frequency band as an example, the specific values of the power spectral density threshold corresponding to different frequencies can include -41 dBm / MHz, -51 dBm / MHz, -65 dBm / MHz, and -70 dBm / MHz. For specific descriptions of the power spectral density threshold, refer to the relevant description in the UWB technology described above, and the embodiments of the present application will not be described here.

[0169] In a possible embodiment, if 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, the first device can obtain the target signal according to the Wi-Fi signal, and the target signal meets the requirements of relevant regulations on the transmission signal on the UWB frequency band; correspondingly, the second device can receive the target signal on the UWB frequency band.

[0170] Optionally, the method further comprises: the first device sending the first signal on the first frequency band. In a possible embodiment, the first device sends the first signal on the first frequency band and the target signal on the second frequency band in time division. Optionally, the first frequency band is a Wi-Fi frequency band and the second frequency band is a UWB frequency band, i.e., the first device works in the Wi-Fi frequency band and the UWB frequency band in time division. For example, the first device can send a Wi-Fi signal on the first frequency band or the target signal on the second frequency band in time division according to the distance between the first device and the second device, such as sending the Wi-Fi signal on the first frequency band at a long distance and sending the target signal on the second frequency band at a short distance.

[0171] When the first device works in the Wi-Fi frequency band and the UWB frequency band in time division, the filter in the first device can have different filter coefficients in the Wi-Fi frequency band and the UWB frequency band, and the passband and the out-of-band image rejection capability corresponding to the filter coefficients of the filter in the Wi-Fi frequency band can meet the relevant requirements of the Wi-Fi frequency band communication, and the passband and the out-of-band image rejection capability corresponding to the filter coefficients of the filter in the UWB frequency band can meet the relevant requirements of the UWB frequency band communication. For example, FIG. 11 shows a schematic diagram of the amplitude-frequency response of a filter corresponding to the UWB frequency band, in which the abscissa represents the frequency (MHz) and the ordinate represents the amplitude (dB). Compared with the amplitude-frequency response in the Wi-Fi frequency band, the amplitude-frequency response of the filter corresponding to the UWB frequency band expands the passband of the filter, ensures that the single-sideband width is not less than 250 MHz, and increases the out-of-band image rejection capability (i.e., makes the waveform of the passband of the amplitude-frequency response drop more steeply) to ensure that the transmission power of the out-of-band signal meets the out-of-band transmission power limit requirement of the corresponding frequency band.

[0172] Step 740, the second device demodulates the first signal in the target signal.

[0173] Demodulation refers to the process of recovering a message from a modulated signal carrying information. When the second device receives the target signal, the second device can demodulate the first signal in the target signal according to the bandwidth of the first signal and the center frequency point of the first signal. For example, the second device determines the position of the first signal in the target signal according to the bandwidth of the first signal and the center frequency point of the first signal, and obtains the first signal from the target signal, and then performs subcarrier demapping, constellation demapping, channel decoding, etc. on the first signal to realize the demodulation of the first signal.

[0174] In the first signal, all the data can be valid data, or part of the data in the first signal is valid data, and 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 of the first signal and the center frequency point of the first signal.

[0175] The second device can also send a response signal to the first device after demodulating the first signal in the target signal. Embodiments of the present application also include a step 750, in which the second device sends a response signal to the first device, and a step 760, in which the first device receives the response signal sent by the second device.

[0176] In a first possible example, when the first device sends more than two target signals, the second device sends more than two response signals to the first device after receiving the more than two target signals. The first device receives the more than two response signals. The format of the more than two response signals is the same as the format of the target signals corresponding to the more than two response signals. The format of the response signal can be found in the above description of the format of the target signal, and will not be described again. For example, as shown in (a) of FIG. 12, the second device sends a first response signal corresponding to the first target signal and a second response signal corresponding to the second target signal to the first device after receiving the first target signal and the second target signal, and the first device receives the first response signal corresponding to the first target signal and the second response signal corresponding to the second target signal.

[0177] Thus, the response signal is received at the end of the first time period, so that the first device can send at least one target signal as soon as possible.

[0178] In a second possible example, when the first device sends more than two target signals, the second device sends a response signal corresponding to each target signal to the first device after receiving the target signal each time the first device sends a target signal. The first device receives the response signal corresponding to the target signal. The format of the response signal is the same as the format of the target signal corresponding to the response signal. The format of the response signal can be found in the above description of the format of the target signal, and will not be described again. For example, as shown in (b) of FIG. 12, the second device sends a first response signal corresponding to the first target signal to the first device after receiving the first target signal, and the first device receives the first response signal corresponding to the first target signal. Furthermore, the second device sends a first response signal corresponding to the first target signal to the first device after receiving the first target signal each time the first device sends the first target signal, and the first device receives the first response signal corresponding to the first target signal. The second device sends a second response signal corresponding to the second target signal to the first device after receiving the second target signal each time the first device sends the second target signal, and the first device receives the second response signal corresponding to the second target signal.

[0179] The short interframe space (SIFS) is used to separate frames belonging to one dialogue. The response signal includes an acknowledgement (ACK) or a block acknowledgement (BA).

[0180] Thus, the first device sends a target signal, receives a response signal corresponding to the target signal, and learns whether the target signal is successfully sent or fails to be sent as soon as possible.

[0181] In the technical solution provided by the embodiments of the present application, the first device can generate at least one target signal, the at least one target signal includes a first signal and a second signal, and the bandwidth of the target signal is greater than the bandwidth of the first signal. Then, in the process of sending the at least one target signal, the first device sends the first signal in different frequency ranges in at least two time units in the time period of sending the target signal, that is, the first signal is sent in a frequency hopping manner. In this way, the first device can send the target signal in other frequency bands different from the current communication frequency band with a greater bandwidth, so that the first device supports communication in multiple frequency bands, and the frequency bands for communication of the first device are expanded. In addition, since the first signal occupies different frequency ranges in different time units, the anti-interference capability during communication is improved. When the power spectral density of the target signal meets the requirements of relevant regulations, and the power spectral density of the first signal is greater than the power spectral density of the second signal, the power consumption of the first device can be reduced.

[0182] The second device can receive at least one target signal, the at least one target signal includes a first signal and a second signal, and the bandwidth of the target signal is greater than the bandwidth of the first signal. The first signal occupies different frequency ranges in at least two time units, that is, the first signal is sent in a frequency hopping manner. In the process of receiving the at least one target signal, the second device receives the first signal in different frequency ranges in at least two time units. In this way, the second device can receive the target signal sent by the first device in other frequency bands different from the current communication frequency band with a greater bandwidth, and no improvement or optimization is needed for the second device, so that the device cost is reduced, and the product competitiveness is improved.

[0183] It should be understood that, in order to implement the above functions, the first device and the first device comprise the corresponding hardware structure and / or software module for executing various functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed in the present text, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is realized in the form of hardware or 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 realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0184] The embodiments of the present application can divide the function modules of the first device and the first device according to the above method examples. For example, each function module can be divided according to each function, or two or more functions can be integrated in one module. The integrated module can be realized in the form of hardware or software function module. It should be noted that the division of the modules in the embodiments of the present application is illustrative, and is only a logical function division. In actual implementation, there can be another division method. The following will be described taking the division of each function module according to each function as an example.

[0185] In the case of using integrated units, FIG. 13 shows a structural schematic diagram of a signal transmission device involved in the above embodiments. The signal transmission device 1300 can be a first device or a chip applied to the first device, and the device comprises a processing module 1310 and a communication module 1320. The processing module 1310 can be used to support the device to execute step 710 in the above method embodiments; the communication module 1320 is used to support the device to execute step 720 in the above method embodiments. All related contents of each step involved in the above method embodiments can be referred to the function description of the corresponding function module, and the embodiments of the present application will not be repeated here.

[0186] On the basis of realizing in hardware, the processing module 1310 in the embodiments of the present application can be a processor of the device, and the communication module 1320 can be a transceiver of the device. The transceiver usually comprises a transmitter and a receiver, and the specific transceiver can also be referred to as a communication interface or an interface circuit.

[0187] The apparatus can also be a second device or a chip applied to a second device. The processing module 1310 can be configured to support the apparatus to perform step 730 in the above method embodiments. The communication module 1320 can be configured to support the apparatus to perform step 740 in the above method embodiments. All related contents of the steps in the above method embodiments can be referred to the function description of the corresponding functional modules, which will not be repeated here.

[0188] Optionally, the signal transmission apparatus 1300 can further include a storage module 1330, which is configured to store the frequency hopping information, so that the signal transmission apparatus transmits the target signal according to the frequency hopping information.

[0189] As shown in FIG. 14, FIG. 14 is a structural schematic diagram of another signal transmission apparatus provided by the embodiments of the present application and related to the above embodiments. The signal transmission apparatus 1400 can be a first device or a chip applied to a first device, or the apparatus can be a second device or a chip applied to a second device. The apparatus includes a processor 1411, and can further include a memory 1412, a communication interface 1413 and a bus 1414. The processor 1411, the memory 1412 and the communication interface 1413 are connected through the bus 1414.

[0190] The processor 1411 is configured to control and manage the actions of the apparatus. In a possible embodiment, the processor 1411 can be configured to support the apparatus to receive step 710 in the above method embodiments, and / or other technical processes described herein. The communication interface 1413 is configured to support the apparatus to communicate, such as supporting the apparatus to communicate with a second device. In a possible embodiment, the processor 1411 can be configured to support the apparatus to receive step 740 in the above method embodiments, and / or other technical processes described herein. The communication interface 1413 is configured to support the apparatus to communicate, such as supporting the apparatus to communicate with a first device.

[0191] In the embodiments of the present application, the processor 1411 can be a central processing unit, a general processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in combination with the disclosure. The processor can also be a combination of computing functions, such as one or more microprocessor combinations, digital signal processor and microprocessor combinations, etc. The above bus 1414 can include address bus, data bus, control bus, etc.

[0192] In another embodiment of the present application, a communication system is provided, which includes a first device and a second device; wherein the first device can be or include the apparatus provided in the above described embodiments of FIG. 13 or FIG. 14, configured to perform the steps of the first device in the above described method embodiments; and the second device can be or include the apparatus provided in the above described embodiments of FIG. 13 or FIG. 14, configured to perform the steps of the second device in the above described method embodiments.

[0193] It can be understood that all the related contents of the steps involved in the above described method embodiments can be cited into the embodiments of the first signal transmission apparatus and the second signal transmission apparatus, and the embodiments of the communication system, which will not be repeated here.

[0194] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other means. For example, the above described apparatus embodiments are only illustrative, for example, the division of the modules or units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another apparatus, or some features can be ignored or not executed.

[0195] The units described as separate components can or can not be physically separate, and the components displayed as units can be one physical unit or a plurality of physical units, that is, can be located in one place, or can be distributed to a plurality of different places. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0196] The integrated units, if implemented in the form of software function units and sold or used as independent products, can be stored in a readable storage medium, which can include: U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and various storage program codes. Based on such understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence or say the part of the prior art or the whole or part of the technical solutions.

[0197] In another embodiment of the present application, a readable storage medium is also provided, which stores computer execution instructions, when a device (which can be a single chip microcomputer, chip, etc.) or a processor executes the steps of the first device or the second device in the above described method embodiments.

[0198] In yet another embodiment of the present application, a computer program product is also provided, which includes computer instructions stored in a readable storage medium; at least one processor of a device can read the computer instructions from the readable storage medium, and the at least one processor executes the computer instructions to make the device perform the steps of the first device or the second device in the above-mentioned method embodiments.

[0199] Finally, it should be noted that the above-mentioned is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical scope disclosed in the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A signal transmission method, characterized in that, include: Generate at least one target signal, the at least one target signal including a first signal and a second signal, the bandwidth of the target signal being greater than the bandwidth of the first signal, and the power spectral density of the first signal being greater than or equal to the power spectral density of the second signal; During a first time period, at least one target signal is transmitted. The first time period includes multiple time units. The first signal occupies a different frequency range in at least two time units, and the target signal has the same frequency range in the at least two time units.

2. The method according to claim 1, characterized in that, The bandwidth of the first signal is the same as the bandwidth of the second signal.

3. The method according to claim 1 or 2, characterized in that, The duration of the time unit is greater than or equal to the duration of transmitting the target signal.

4. The method according to claim 3, characterized in that, The at least one target signal includes two or more target signals; During the first time period, sending at least one target signal includes: During the first time period, two or more target signals are transmitted, and each of the two or more target signals includes a first signal that occupies a different frequency range.

5. The method according to claim 4, characterized in that, During the first time period, sending at least one target signal includes: During the first time period, the two or more target signals are transmitted according to the first transmission rule, which is used to indicate the transmission order of the two or more target signals.

6. The method according to claim 5, characterized in that, Before transmitting the two or more target signals according to the first transmission rule, the method further includes: Send instruction information, which is used to indicate the first sending rule.

7. The method according to any one of claims 4-6, characterized in that, After sending the two or more target signals, the method further includes: Receive two or more response signals, wherein the format of the two or more response signals is the same as the format of the target signal corresponding to the two or more response signals.

8. The method according to any one of claims 4-6, characterized in that, The method further includes: After sending the target signal, a response signal corresponding to the target signal is received, and the format of the response signal is the same as that of the target signal.

9. The method according to claim 1 or 2, characterized in that, The duration of the time unit is equal to the duration of one time slot within the duration of transmitting the target signal.

10. The method according to claim 9, characterized in that, The at least one target signal includes a first target signal; During the first time period, sending at least one target signal includes: During the first time period, the first target signal is transmitted, and the first signal occupies at least two frequency ranges within at least two time units.

11. The method according to claim 10, characterized in that, The method further includes: Before sending the first signal and the second signal, a preamble is sent, the bandwidth of which is the same as the sum of the bandwidths of the first signal and the second signal.

12. The method according to any one of claims 3-10, characterized in that, The method further includes: Before sending the first signal, a preamble is sent, the bandwidth of which is the same as that of the first signal, and the preamble and the first signal occupy the same frequency range.

13. A signal transmission method, characterized in that, include: During a first time period, at least one target signal is received, the at least one target signal including a first signal and a second signal, the bandwidth of the target signal is greater than the bandwidth of the first signal, the power spectral density of the first signal is greater than or equal to the power spectral density of the second signal, the first time period includes multiple time units, the first signal occupies different frequency ranges in at least two time units, and the target signal has the same frequency range in the at least two time units. Demodulate the first signal in the target signal.

14. The method according to claim 13, characterized in that, The bandwidth of the first signal is the same as the bandwidth of the second signal.

15. The method according to claim 13 or 14, characterized in that, The duration of the time unit is greater than or equal to the duration of transmitting the target signal.

16. The method according to claim 15, characterized in that, The at least one target signal includes two or more target signals; During the first time period, receiving the at least one target signal includes: During the first time period, two or more target signals are received, and each of the two or more target signals includes a first signal that occupies a different frequency range.

17. The method according to claim 16, characterized in that, During the first time period, receiving the at least one target signal includes: During the first time period, the two or more target signals are received according to the first transmission rule, which is used to indicate the transmission order of the two or more target signals.

18. The method according to claim 17, characterized in that, Before receiving the two or more target signals according to the first transmission rule, the method further includes: Receive indication information, which is used to indicate the first sending rule.

19. The method according to any one of claims 16-18, characterized in that, After receiving the two or more target signals, the method further includes: Send two or more response signals, wherein the format of the two or more response signals is the same as the format of the target signal corresponding to the two or more response signals.

20. The method according to any one of claims 16-18, characterized in that, The method further includes: After receiving the target signal, a response signal corresponding to the target signal is sent, and the format of the response signal is the same as that of the target signal.

21. The method according to claim 13 or 14, characterized in that, The duration of the time unit is equal to the duration of one time slot within the duration of transmitting the target signal.

22. The method according to claim 21, characterized in that, The at least one target signal includes a first target signal; During the first time period, receiving the at least one target signal includes: During the first time period, the first target signal is received, and the first signal occupies at least two frequency ranges within at least two time units.

23. The method according to claim 22, characterized in that, The method further includes: Before receiving the first signal and the second signal, a preamble is received, the bandwidth of which is the same as the sum of the bandwidths of the first signal and the second signal.

24. The method according to any one of claims 15-22, characterized in that, The method further includes: Before receiving the first signal, a preamble is received, the bandwidth of which is the same as that of the first signal, and the preamble and the first signal occupy the same frequency range.

25. The method according to any one of claims 1-24, characterized in that, The first signal is a valid signal, and the second signal is a redundant signal.

26. The method according to any one of claims 1-25, characterized in that, The at least one target signal further includes a third signal; the bandwidth of the first signal is greater than the bandwidth of the third signal, the power spectral density of the first signal is greater than or equal to the power spectral density of the third signal, and the third signal is a redundant signal.

27. A signal transmission device, characterized in that, The apparatus includes a processor and a transceiver, the processor and the transceiver being configured to support the apparatus in performing the signal transmission method as described in any one of claims 1-26.

28. A readable storage medium, characterized in that, The readable storage medium stores instructions that, when executed on the device, cause the device to perform the method as described in any one of claims 1-26.

29. A computer program product, characterized in that, The computer program product includes a computer program that, when run on a device, causes the device to perform the method as described in any one of claims 1-26.

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