Signal sending method and apparatus, signal receiving method and apparatus, device, and medium

Abstract

The present application relates to the field of communications, and provides a signal sending method and apparatus, a signal receiving method and apparatus, a device, and a medium. The signal sending method is applied to a signal sender device, and comprises: sending at least two signals, wherein the at least two signals occupy at least two time-frequency resources among a group of time-frequency resources, the time-domain positions corresponding to the at least two time-frequency resources are different, and the at least two signals are generated on the basis of a same signal sequence. The method can ensure the autocorrelation characteristics of at least two signals sent at different time-domain positions, thereby improving the perception performance.

Description

Signal sending method, receiving method, device, equipment and medium Technical Field

[0001] The present application relates to the field of communications, and in particular to a signal sending method, receiving method, apparatus, device, and medium. Background Art

[0002] Integrated communication and perception is a technology with great application prospects. The perception process, especially for Doppler shift and velocity, requires measuring signals over a period of time. The better the autocorrelation characteristics of the signal during this period, the better the perception performance.

[0003] How to ensure the autocorrelation characteristics of signals transmitted at different times to ensure perception performance is an urgent problem to be solved.

[0004] Summary of the Invention

[0005] This application provides a signal transmission method, a signal reception method, an apparatus, a device, and a medium. The technical solution is as follows:

[0006] According to one aspect of the present application, a signal sending method is provided, which is applied to a signal sending end device, and the method includes:

[0007] At least two signals are sent, where the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein the at least two signals are generated based on the same signal sequence.

[0008] According to one aspect of the present application, a signal receiving method is provided, which is applied to a signal receiving end device, and the method includes:

[0009] Receive at least two signals, where the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein the at least two signals are generated based on the same signal sequence.

[0010] According to another aspect of the present application, a signal sending device is provided, the device comprising:

[0011] A sending module is used to send at least two signals, where the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein the at least two signals are generated based on the same signal sequence.

[0012] According to another aspect of the present application, a signal receiving device is provided, the device comprising:

[0013] A receiving module is used to receive at least two signals, where the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein the at least two signals are generated based on the same signal sequence.

[0014] According to another aspect of the present application, a terminal device is provided, comprising:

[0015] A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor;

[0016] Wherein, the terminal device is used to implement the signal sending method or signal receiving method as described above.

[0017] According to another aspect of the present application, a network device is provided, comprising:

[0018] A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor;

[0019] The network device is used to implement the signal sending method or signal receiving method described above.

[0020] According to another aspect of the present application, a computer-readable storage medium is provided, in which executable instructions are stored. The executable instructions are loaded and executed by the processor to implement the signal sending method or signal receiving method as described above.

[0021] According to another aspect of the present application, a chip is provided, which includes a programmable logic circuit or a program, and the chip is used to implement the signal sending method or signal receiving method as described above.

[0022] According to another aspect of the present application, a computer program product is provided, which includes computer instructions, wherein the computer instructions are stored in a computer-readable storage medium, and a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the signal sending method or signal receiving method as described above.

[0023] According to another aspect of the present application, a computer program is provided, which includes computer instructions. A processor of a computer device executes the computer instructions, so that the computer device performs the signal sending method or signal receiving method as described above.

[0024] The technical solutions provided by the embodiments of the present application include at least the following beneficial effects:

[0025] A signal transmitting device transmits at least two signals, and a signal receiving device receives at least two signals. The at least two signals occupy at least two time-frequency resources in a set of time-frequency resources, the at least two time-frequency resources correspond to different time-domain locations, and the at least two signals are generated based on the same signal sequence. Because signals corresponding to the same signal sequence have autocorrelation characteristics, the autocorrelation characteristics of the at least two signals transmitted by the signal transmitting device at different time-domain locations can be ensured. The signal receiving device can distinguish between the at least two signals transmitted at different time-domain locations, thereby improving perception performance and facilitating perception measurement and perception target detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below only show some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] FIG1 is a schematic diagram showing a reference signal mapping pattern provided by an exemplary embodiment of the present application;

[0028] FIG2 shows a schematic diagram of a wireless communication system provided by an exemplary embodiment of the present application;

[0029] FIG3 is a schematic diagram showing a flow chart of a signal sending method provided by an exemplary embodiment of the present application;

[0030] FIG4 shows a schematic flow chart of a signal receiving method provided by an exemplary embodiment of the present application;

[0031] FIG5 shows a schematic diagram of a group of time-frequency resources provided by an exemplary embodiment of the present application;

[0032] FIG6 is a schematic diagram showing a transmission opportunity provided by an exemplary embodiment of the present application;

[0033] FIG7 is a schematic diagram showing transmission opportunities provided by some exemplary embodiments of the present application;

[0034] FIG8 is a schematic diagram showing transmission opportunities provided by some exemplary embodiments of the present application;

[0035] FIG9 is a schematic diagram showing a transmission opportunity provided by an exemplary embodiment of the present application;

[0036] FIG10 is a schematic diagram showing time domain mapping of a signal provided by an exemplary embodiment of the present application;

[0037] FIG11 is a schematic diagram showing time domain mapping of a signal provided by an exemplary embodiment of the present application;

[0038] FIG12 is a schematic diagram showing continuous mapping of signals within a time slot provided by an exemplary embodiment of the present application;

[0039] FIG13 is a schematic diagram showing continuous mapping of signals into multiple time slots provided by an exemplary embodiment of the present application;

[0040] FIG14 is a schematic diagram showing interval mapping of signals within a time slot provided by an exemplary embodiment of the present application;

[0041] FIG15 is a schematic diagram showing interval mapping of signals in multiple time slots provided by an exemplary embodiment of the present application;

[0042] FIG16 shows a schematic diagram of a time window provided by an exemplary embodiment of the present application;

[0043] FIG17 is a schematic diagram showing a time window provided by an exemplary embodiment of the present application;

[0044] FIG18 is a schematic diagram showing a time window provided by an exemplary embodiment of the present application;

[0045] FIG19 is a schematic diagram showing a time window provided by an exemplary embodiment of the present application;

[0046] FIG20 is a schematic diagram showing time domain mapping of a signal provided by an exemplary embodiment of the present application;

[0047] FIG21 is a schematic diagram showing time domain mapping of a signal provided by an exemplary embodiment of the present application;

[0048] FIG22 is a schematic diagram showing different groups of time-frequency resources provided by an exemplary embodiment of the present application;

[0049] FIG23 is a schematic diagram showing different groups of time-frequency resources provided by an exemplary embodiment of the present application;

[0050] FIG24 shows a block diagram of a signal sending device provided by an exemplary embodiment of the present application;

[0051] FIG25 shows a block diagram of a signal receiving device provided by an exemplary embodiment of the present application;

[0052] FIG26 shows a structural block diagram of a communication device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0054] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0055] It should be understood that although the terms first, second, third, etc. may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0056] First, the communication technology involved in the embodiments of this application is introduced:

[0057] 1. Communication and perception integrated technology

[0058] Communication-perception integration technology, also known as synaesthesia integration, can be broadly categorized into two types: communication-assisted perception and perception-assisted communication. Communication-assisted perception refers to the transmission and aggregation of perception information via wireless communications, which can expand the breadth and depth of perception services and improve their timeliness. Fusion of communication and perception technology can provide efficient perception services such as high-precision positioning, high-resolution imaging, and virtual environment reconstruction. This can effectively build digital twin environments, enabling digital re-presentation and deep processing across numerous industries.

[0059] Next-generation mobile communication systems, such as the sixth generation (6G) mobile communication system, will be a fusion of mobile communication networks, perception networks, and computing networks. In a narrow sense, a perception network refers to a system with capabilities such as target positioning (ranging, speed, and angle measurement), target imaging, target detection, target tracking, and target recognition. In a broader sense, it refers to a system that understands the attributes and states of all services, networks, users, and terminals, as well as environmental objects. For example, from the perspective of perception applications, perception can be classified into at least the following categories, but is not limited to these: outdoor / wide-area / local-area applications, including smart cities (such as weather monitoring), smart transportation / high-speed rail (such as high-precision map construction, road supervision, intrusion detection), and low-altitude applications (such as drone monitoring and obstacle avoidance, flight intrusion detection, and flight path management); indoor / local-area applications, including smart homes and health management (such as respiratory monitoring, intrusion detection, gesture / posture recognition, motion monitoring, and mobile trajectory tracking), and smart factories (such as intrusion detection, material detection, and item defect detection).

[0060] Wireless communication and sensing are two key applications of modern radio frequency technology. Sensing uses radio waves to detect parameters of the physical environment, enabling environmental perception such as target location, motion recognition, and imaging. Traditionally, sensing and wireless communication have existed independently, and this separation wastes wireless spectrum and hardware resources. In the B5G and 6G eras, the communication spectrum is shifting towards millimeter-wave, terahertz, and visible light communications. In the future, the wireless communication spectrum will overlap with the traditional sensing spectrum. Integrated communication and sensing technology merges wireless communication and sensing functions, leveraging wireless communication resources for sensing. It can leverage widely deployed cellular networks to enable sensing services over larger areas. It can leverage base stations and multiple terminals for joint sensing, achieving higher sensing accuracy. It can also reuse wireless communication hardware modules for sensing, reducing costs. In short, integrated communication and sensing technology empowers future wireless communication systems with sensing capabilities, laying the foundation for the development of smart transportation, smart cities, smart factories, drones, and other services.

[0061] Distance and velocity measurements play an important role in the perception process. Using specific reference signals or signal sequences in the communication system, the distance from the target to the perception node (measurement node), signal transmission delay, radial velocity, and signal Doppler shift can be measured and estimated. Depending on the measurement algorithm and the characteristics of the communication signal, different reference signal mappings can have a significant impact on the measurement results. For example, in delay measurement, the signal bandwidth B directly affects the accuracy (resolution) Δτ of the delay measurement. The frequency domain interval Δf of the signal directly affects the maximum delay that can be measured, also known as the maximum unambiguous range of the delay τ max , Correspondingly, the signal transmission distance can be calculated by delay measurement, and then the distance between the target and the sensing node can be obtained. When measuring Doppler shift, the duration of the measured signal T f , which directly affects the accuracy (resolution) of the measured Doppler shift Δf, The time interval T of the signal within the duration s , which directly affects the maximum range of the measured results, also known as the maximum unambiguous range of Doppler shift f max , Based on the measured Doppler shift, the radial velocity of the target and the sensing node can be further calculated.

[0062] 2. Reference signal sequence generation

[0063] In fifth-generation (5G) mobile communication systems, reference signal sequences are generated using pseudo-random codes (e.g., Gold codes). The initial factor corresponding to the reference signal sequence is directly related to the time slot index and the orthogonal frequency division multiplexing (OFDM) symbol position of the reference signal. In other words, reference signal sequences at different time domain locations are independently generated and exhibit excellent autocorrelation characteristics.

[0064] Taking the demodulation reference signal (DMRS) and the channel state information reference signal (CSI-RS) as an example, the initial factor of the DMRS reference signal sequence of the physical downlink control channel (PDCCH) is:

[0065] Among them, c init is the initial factor of the DMRS reference signal sequence, is the number of OFDM symbols (hereinafter referred to as symbols) in one time slot, is the time slot index in the radio frame where the DMRS is located, l is the symbol index where the DMRS is located, N ID The scrambling code number or cell ID configured by the higher layer. The initial factor of the CSI-RS signal sequence is:

[0066] Among them, c init is the initial factor of the CSI-RS signal sequence, is the number of symbols in a time slot, is the time slot index in the radio frame where the CSI-RS is located, l is the symbol index where the CSI-RS is located, and n ID It is the scrambling code number or cell ID configured by the higher layer.

[0067] 3. Reference signal mapping method

[0068] In the 5G system, the mapping method of the reference signal follows the mapping principle of frequency domain first and time domain later. After the reference signal sequence to be mapped is generated, it is mapped from the low position to the high position in the frequency domain on the specified symbol, thereby forming a reference signal mapping pattern that occupies 1 symbol or has an equally spaced (comb-like) structure in 1 symbol. Figure 1 shows a schematic diagram of a reference signal mapping pattern provided by an exemplary embodiment of the present application. The horizontal axis of Figure 1 represents time (time domain), the vertical axis represents frequency (frequency domain), and the filling part is the resource element (RE) occupied by the reference signal. (1), (2) and (3) in Figure 1 respectively show reference signal mapping patterns in which the reference signal sequence is continuously mapped from the low position to the high position in the frequency domain. (1) in Figure 1 shows a reference signal sequence, which occupies a group of time-frequency resources. The time domain positions corresponding to this group of time-frequency resources are the same and the frequency domain positions are different. (2) in Figure 1 shows two reference signal sequences, each of which occupies a set of time-frequency resources, and the time domain positions corresponding to the set of time-frequency resources occupied by each reference signal sequence are the same, but the frequency domain positions are different. (3) in Figure 1 shows four reference signal sequences, each of which occupies a set of time-frequency resources, and the time domain positions corresponding to the set of time-frequency resources occupied by each reference signal sequence are the same, but the frequency domain positions are different. (4) in Figure 1 shows a reference signal mapping pattern in which the reference signal sequence is mapped at equal intervals from the low position to the high position of the frequency domain position. (4) in Figure 1 shows one reference signal sequence, which occupies a set of time-frequency resources, and the time domain positions corresponding to the set of time-frequency resources are the same, but the frequency domain positions are different.

[0069] Based on the above, we can see that reference signal sequences occupying different time domain locations are independently generated, and each reference signal sequence has good autocorrelation characteristics. However, the perception process, especially the perception of Doppler shift and velocity, requires measuring signals over a period of time. The better the autocorrelation characteristics of the signals within this period, the better the perception performance. Obviously, different reference signal sequences in related technologies do not have autocorrelation characteristics, and therefore cannot guarantee perception performance.

[0070] Figure 2 shows a schematic diagram of a wireless communication system provided by an exemplary embodiment of the present application. The wireless communication system includes a network device 110 and a terminal device 120, and / or a terminal device 120 and a terminal device 130, which are not limited in the present application.

[0071] The network device 110 in the present application provides wireless communication functions, and the network device 110 includes but is not limited to: Evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home Evolved Node B, or Home Node B, HNB), Baseband Unit (BBU), Access Point (AP) in Wireless Fidelity (Wi-Fi) system, Wireless Relay Node, Wireless Backhaul Node, Transmission Point (TP) or Transmission and Reception Point (TRP), etc., and can also be the Next Generation Node B (NGNB) in the 5th Generation (5G) mobile communication system. B, gNB) or transmission point (TRP or TP), or one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or a network node constituting a gNB or transmission point, such as a baseband unit (BBU) or a distributed unit (DU), or a base station in a Beyond Fifth Generation (B5G) mobile communication system or a sixth generation (6G) mobile communication system, or a core network (CN), fronthaul (Fronthaul), backhaul (Backhaul), radio access network (RAN), network slicing, or a serving cell, primary cell (PCell), primary secondary cell (PSCell), special cell (SpCell), secondary cell (SCell), neighboring cell, etc. of a terminal device.

[0072] The terminal device 120 and / or terminal device 130 in this application are also called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, and user device. The terminals include, but are not limited to, handheld devices, wearable devices, vehicle-mounted devices, and Internet of Things devices, such as mobile phones, tablet computers, e-book readers, laptop computers, desktop computers, televisions, game consoles, mobile Internet devices (MIDs), augmented reality (AR) terminals, virtual reality (VR) terminals, and mixed reality (MR) terminals, wearable devices, handles, electronic tags, controllers, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, wireless terminals in remote medical surgery, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loops (WLANs), and wireless terminals in industrial control. Loop (WLL) stations, personal digital assistants (PDA), TV set-top boxes (STB), customer premises equipment (CPE), etc.

[0073] The network device 110 and the terminal device 120 communicate with each other via some air interface technology, such as a Uu interface.

[0074] In some embodiments, there are two communication scenarios between the network device 110 and the terminal device 120: uplink communication scenario and downlink communication scenario. Uplink communication refers to sending signals to the network device 110; downlink communication refers to sending signals to the terminal device 120.

[0075] The terminal device 120 and the terminal device 130 communicate with each other via a direct communication interface, such as a PC5 interface.

[0076] In some embodiments, there are two communication scenarios between the terminal device 120 and the terminal device 130: a first sideline communication scenario and a second sideline communication scenario. The first sideline communication refers to sending signals to the terminal device 130; the second sideline communication refers to sending signals to the terminal device 120.

[0077] In some embodiments, terminal device 120 and terminal device 130 are both within the network coverage and located in the same cell, or terminal device 120 and terminal device 130 are both within the network coverage but located in different cells, or terminal device 120 is within the network coverage but terminal device 130 is outside the network coverage.

[0078] The technical solutions provided in the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G mobile communication system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum) system. Unlicensed spectrum, NR-U) system, terrestrial communication network (Terrestrial Networks, TN) system, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, Wi-Fi), cellular Internet of Things system, cellular passive Internet of Things system, can also be applied to the subsequent evolution system of the 5G NR system, and can also be applied to B5G, 6G and subsequent evolution systems. In some embodiments of the present application, "NR" may also be referred to as a 5G NR system or a 5G system. Among them, the 5G mobile communication system may include non-standalone networking (NSA) and / or standalone networking (SA).

[0079] The solution provided in the embodiment of the present application can also be applied to machine type communication (MTC), long term evolution technology for machine-to-machine communication (LTE-M), device-to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, the IoT network can include, for example, the Internet of Vehicles. Among them, the communication mode in the Internet of Vehicles system is collectively referred to as vehicle to other devices (Vehicle to X, V2X, X can represent anything). For example, the V2X can include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian communication (V2P) or vehicle to network (V2N) communication. The wireless communication system provided in this embodiment can be applied to, but not limited to, at least one of the following communication scenarios: uplink communication scenario, downlink communication scenario, and side communication scenario.

[0080] It should be noted that in the embodiments of the present application, the bandwidth used for the downlink channel, the bandwidth configured for the downlink channel, the bandwidth used for downlink transmission, the bandwidth used for downlink data transmission, and the bandwidth occupied by downlink transmission resources, etc., have the same or similar meanings. Similarly, the bandwidth used for the uplink channel, the bandwidth configured for the uplink channel, the bandwidth used for uplink transmission, the bandwidth used for uplink data transmission, and the bandwidth occupied by uplink transmission resources, etc., have the same or similar meanings. Similarly, the bandwidth used for the sidelink channel, the bandwidth configured for the sidelink channel, the bandwidth used for sidelink transmission, the bandwidth used for sidelink data transmission, and the bandwidth occupied by sidelink transmission resources, etc., have the same or similar meanings.

[0081] FIG3 is a flow chart illustrating a signal transmission method provided by some exemplary embodiments of the present application. The method is illustrated by taking the method executed by a signal transmitting terminal device as an example. The method includes at least some of the following steps:

[0082] Step 220: Send at least two signals, where the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein the at least two signals are generated based on the same signal sequence.

[0083] In some embodiments, the signal sending end device is a terminal device or a network device, and the signal sending end device may also be referred to as a first node device, a perception initiating node device, a sending node device, or a first perception node device.

[0084] In summary, the signal transmitting device in the embodiment of the present application transmits at least two signals, the at least two signals occupy at least two time-frequency resources in a set of time-frequency resources, the at least two time-frequency resources correspond to different time-domain positions, and the at least two signals are generated based on the same signal sequence. Because the signals corresponding to the same signal sequence have autocorrelation characteristics, this method can ensure the autocorrelation characteristics of at least two signals transmitted on different time-frequency resources, thereby improving perception performance and facilitating perception measurement and perception target detection.

[0085] During the perception process, the signals used for measurement or detection are mostly reflected signals. Due to the influence of the signal transmission environment, the reflected signals of signals sent in different time windows or different transmission opportunities may overlap in time. In this case, the autocorrelation characteristics of the signal sequence can be used to distinguish the received signal sequence, making the communication system applicable to complex transmission environments.

[0086] In some embodiments, the signal transmitting end device sends different groups of signals in different groups of time-frequency resources, and each group of signals includes at least two signals; wherein, the time domain positions corresponding to different groups of time-frequency resources are the same and the frequency domain positions are different, or, the time domain positions corresponding to different groups of time-frequency resources are different and the frequency domain positions are the same, or, the time domain positions corresponding to different groups of time-frequency resources are different and the frequency domain positions are different; the signals of different groups are generated based on the same signal sequence, or, the signals of different groups are generated based on different signal sequences.

[0087] In summary, the signal transmitting end device in the embodiment of the present application transmits different groups of signals in different groups of time-frequency resources, each group of signals includes at least two signals, and the signals of different groups are generated based on the same signal sequence, or the signals of different groups are generated based on different signal sequences. Among them, when the signals of different groups are generated based on the same signal sequence, the autocorrelation characteristics of the signals of different groups can be guaranteed, the perception performance is improved, and it is beneficial to perception measurement and perception target detection; when the signals of different groups are generated based on different signal sequences, it is possible to transmit signals corresponding to different signal sequences, thereby improving the efficiency of signal transmission.

[0088] In some embodiments, the method further includes optional step 240 of receiving at least one of the following configuration information: first configuration information; second configuration information; and third configuration information. The first configuration information is used for transmission opportunity and / or time window configuration, the second configuration information is used for time domain resource configuration of a group of time-frequency resources, and the third configuration information is used for frequency domain resource configuration of a group of time-frequency resources.

[0089] It should be noted that the first, second, and third configuration information described above can be used independently or in combination. For example, a network device or a signal receiving device can be configured with only the first configuration information, only the second configuration information, or only the third configuration information. Alternatively, the first and second configuration information, the first and third configuration information, the second and third configuration information, or the first, second, and third configuration information can be configured simultaneously.

[0090] To sum up, the signal sending device in the embodiment of the present application is based on at least one of the first configuration information, the second configuration information and the third configuration information, so that at least two signals are sent at different time domain positions corresponding to a set of time-frequency resources. Since at least two signals are generated based on the same signal sequence, the autocorrelation characteristics of at least two signals can be guaranteed, thereby improving the perception performance, which is beneficial to perception measurement and perception target detection.

[0091] FIG4 is a flow chart of a signal receiving method provided by some exemplary embodiments of the present application. The method is illustrated by taking the method executed by a signal receiving device as an example. The method includes at least some of the following steps:

[0092] Step 320: Receive at least two signals, where the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein the at least two signals are generated based on the same signal sequence.

[0093] In some embodiments, the signal receiving end device is a terminal device or a network device, and the signal receiving end device may also be referred to as a second node device, a perception receiving node device, a receiving node device, or a second perception node device.

[0094] In summary, the signal receiving device in the embodiments of the present application receives at least two signals, the at least two signals occupy at least two time-frequency resources in a set of time-frequency resources, the at least two time-frequency resources correspond to different time-domain locations, and the at least two signals are generated based on the same signal sequence. Because the signals corresponding to the same signal sequence have autocorrelation characteristics, this method can ensure the autocorrelation characteristics of at least two signals transmitted on different time-frequency resources, thereby improving perception performance and facilitating perception measurement and perception target detection.

[0095] During the perception process, the signals used for measurement or detection are mostly reflected signals. Due to the influence of the signal transmission environment, the reflected signals of signals received in different time windows or different transmission opportunities may overlap in time. In this case, the autocorrelation characteristics of the signal sequence can be used to distinguish the received signal sequence, making the communication system applicable to complex transmission environments.

[0096] In some embodiments, a signal receiving device receives different groups of signals in different groups of time-frequency resources, and each group of signals includes at least two signals; wherein, the time domain positions corresponding to different groups of time-frequency resources are the same and the frequency domain positions are different, or, the time domain positions corresponding to different groups of time-frequency resources are different and the frequency domain positions are the same, or, the time domain positions corresponding to different groups of time-frequency resources are different and the frequency domain positions are different; the signals of different groups are generated based on the same signal sequence, or, the signals of different groups are generated based on different signal sequences.

[0097] In summary, the signal receiving device in the embodiment of the present application receives different groups of signals in different groups of time-frequency resources, each group of signals includes at least two signals, and the signals of different groups are generated based on the same signal sequence, or the signals of different groups are generated based on different signal sequences. Among them, when the signals of different groups are generated based on the same signal sequence, the autocorrelation characteristics of the signals of different groups can be guaranteed, the perception performance is improved, and it is beneficial to perception measurement and perception target detection; when the signals of different groups are generated based on different signal sequences, it is possible to receive signals corresponding to different signal sequences, thereby improving the signal reception efficiency.

[0098] In some embodiments, the method further includes optional step 340 of receiving at least one of the following configuration information: first configuration information; second configuration information; and third configuration information. Alternatively, the method further includes optional step 360 of sending at least one of the following configuration information: first configuration information; second configuration information; and third configuration information. The first configuration information is used for configuring transmission opportunities and / or time windows, the second configuration information is used for configuring time-domain resources for a group of time-frequency resources, and the third configuration information is used for configuring frequency-domain resources for a group of time-frequency resources.

[0099] It should be noted that the first, second, and third configuration information described above can be used independently or in combination. For example, a network device or a signal receiving device can be configured with only the first configuration information, or only the second configuration information, or only the third configuration information. Alternatively, the first and second configuration information can be configured simultaneously, or the first and third configuration information can be configured simultaneously, or the second and third configuration information can be configured simultaneously, or the first, second, and third configuration information can be configured simultaneously.

[0100] To sum up, the signal receiving device in the embodiment of the present application is based on at least one of the first configuration information, the second configuration information and the third configuration information, so that at least two signals are received at different time domain positions corresponding to a set of time-frequency resources. Since at least two signals are generated based on the same signal sequence, the autocorrelation characteristics of at least two signals can be guaranteed, thereby improving the perception performance, which is beneficial to perception measurement and perception target detection.

[0101] In the optional embodiment shown in FIG3 or FIG4 , various contents are introduced as follows:

[0102] 1. Signal

[0103] In some embodiments, the signal may also be referred to as a perception signal or a reference signal. Perception may also be equivalent to or replaced by at least one of the following: positioning, ranging, speed measurement, angle measurement, target imaging, target detection, target tracking, and target recognition.

[0104] In some embodiments, the signal includes at least one of the following signals: a demodulation reference signal; a sounding reference signal (SRS); an enhanced sounding reference signal (E-SRS); a carrier phase reference signal (CPRS); and a channel state information reference signal.

[0105] 2. Signal sequence

[0106] In some embodiments, the signal sequence is a random signal sequence having autocorrelation characteristics.The signal is generated based on the signal sequence.

[0107] Optionally, the signal sequence is at least one of a pseudo-random sequence (Gold sequence) and an Euler complex sequence (ZC sequence).

[0108] In some embodiments, at least one of the length of the signal sequence, the number of signals corresponding to the signal sequence, and the transmission time length of the signal sequence can be determined according to an agreement, or according to the first configuration information, or according to the second configuration information.

[0109] In some embodiments, at least two signals are generated based on the same signal sequence.

[0110] Optionally, the signal sequence includes at least two sequence segments, each of the at least two signals is generated based on a sequence segment in the same signal sequence, different signals occupy different sequence segments, and the number of bits corresponding to the at least two sequence segments may be the same or different.

[0111] In some embodiments, a signal sequence includes at least two sequence segments, and the number of bits corresponding to at least two sequence segments is the same. For example, the signal sequence includes 8 bits, and the signal sequence has 4 sequence segments, each of which corresponds to 2 bits. The signal sequence is then used to generate 4 signals, namely signal 1, signal 2, signal 3, and signal 4, where signal 1 can be generated based on the 1st and 2nd bits, signal 2 can be generated based on the 3rd and 4th bits, signal 3 can be generated based on the 5th and 6th bits, and signal 4 can be generated based on the 7th and 8th bits.

[0112] 3. A set of time-frequency resources

[0113] In some embodiments, a set of time-frequency resources includes at least two time-frequency resources. The at least two time-frequency resources correspond to at least two time-domain locations and the same frequency-domain location. Alternatively, the at least two time-frequency resources correspond to at least two time-domain locations and at least two frequency-domain locations.

[0114] In some embodiments, a group of time-frequency resources includes at least two time-frequency resources, and at least two time-frequency resources correspond to at least two time domain positions and the same frequency domain position. Figure 5 shows a schematic diagram of time-frequency resources provided by an exemplary embodiment of the present application. The horizontal axis of Figure 5 represents time (time domain), and the vertical axis represents frequency (frequency domain). The physical resource corresponding to 1 subcarrier (Subcarrier) in the frequency domain and 1 symbol (Symbol) in the time domain is called a resource element (Resource Element, RE). The physical resource corresponding to 12 consecutive subcarriers in the frequency domain and 1 time slot (Slot) in the time domain is called a resource block (Resource Block, RB), and 1 time slot includes 7 symbols. (1) in Figure 5 shows a group of time-frequency resources 141, which includes 7 time-domain continuous time-frequency resources, and the 7 time-domain continuous time-frequency resources correspond to 7 time domain positions and 1 frequency domain position. (2) in FIG5 shows a group of time-frequency resources 142, which includes four time-frequency resources with equal time intervals. The time interval between any two adjacent time-frequency resources is 1. The four time-frequency resources with equal time intervals correspond to four time-domain positions and one frequency-domain position. (3) in FIG5 shows a group of time-frequency resources 143, which includes four time-frequency resources with unequal time intervals. The time intervals are 0, 1, or 2. The four time-frequency resources with unequal time intervals are arranged from earliest to latest according to the time-domain position, namely, time-frequency resource 1, time-frequency resource 2, time-frequency resource 3, and time-frequency resource 4. The time interval between time-frequency resource 1 and time-frequency resource 2 is 2, the time interval between time-frequency resource 2 and time-frequency resource 3 is 0, and the time interval between time-frequency resource 3 and time-frequency resource 4 is 1. The four time-frequency resources with unequal time intervals correspond to four time-domain positions and one frequency-domain position.

[0115] In some embodiments, a group of time-frequency resources includes at least two time-frequency resources, and the at least two time-frequency resources correspond to at least two time domain positions and at least two frequency domain positions. Figure 5 shows a schematic diagram of time-frequency resources provided by an exemplary embodiment of the present application. (1) in Figure 5 shows a group of time-frequency resources 144, which includes 14 time-frequency resources, wherein there are 7 time-domain continuous time-frequency resources at the same frequency domain position, and the 14 time-frequency resources correspond to 7 time domain positions and 2 frequency domain positions. (2) in Figure 5 shows a group of time-frequency resources 145, which includes 8 time-frequency resources, wherein there are 4 time-domain equally spaced time-frequency resources at the same frequency domain position, and the time interval between any two adjacent time-frequency resources is 1, and the 8 time-frequency resources correspond to 4 time domain positions and 2 frequency domain positions. (3) in FIG5 shows a group of time-frequency resources 146, which includes 8 time-frequency resources, among which 4 time-frequency resources with unequal time-domain intervals exist at the same frequency domain position, with time intervals of 0, 1, or 2. Taking the 4 time-frequency resources with the highest frequency domain position and arranged from earliest to latest time domain positions as an example, they are time-frequency resource 1, time-frequency resource 2, time-frequency resource 3, and time-frequency resource 4, among which the time interval between time-frequency resource 1 and time-frequency resource 2 is 2, the time interval between time-frequency resource 2 and time-frequency resource 3 is 0, and the time interval between time-frequency resource 3 and time-frequency resource 4 is 1. Therefore, the 8 time-frequency resources correspond to 4 time domain positions and 2 frequency domain positions.

[0116] In some embodiments, a set of time-frequency resources is continuous in the time domain, or is spaced in the time domain.

[0117] Optionally, the intervals may be equally spaced. Equal intervals refer to the same time intervals between any two adjacent time-frequency resources in a group of time-frequency resources, or, equal intervals refer to the same time intervals between any nth time-frequency resource and any n+1th time-frequency resource in a group of time-frequency resources, where n is greater than or equal to 0, or, equal intervals refer to the same time intervals between transmissions of any adjacent signals in at least two signals. Or, equal intervals refer to the same time intervals between the start time of transmission of any jth signal and the start time of transmission of the j+1th signal in at least two signals.

[0118] Optionally, the intervals may also be non-equal intervals. Non-equal intervals refer to the time interval between at least two adjacent time-frequency resources in a group of time-frequency resources, which is different from the time interval between the other two adjacent time-frequency resources, or, non-equal intervals refer to the time interval between at least two adjacent signal transmissions in at least two signals, which is different from the time interval between the other two adjacent signal transmissions. Or, non-equal intervals refer to the time interval between the start moment of at least one j-th signal transmission and the start moment of the j+1-th signal transmission in at least two signals, which is different from the time interval between the start moment of the j-th signal transmission and the start moment of the j+1-th signal transmission of other signals.

[0119] In some embodiments, the time interval corresponding to a set of time-frequency resources is related to at least one of the following information:

[0120] The time interval between adjacent signal transmissions of at least two signals; the time interval between the start time of transmission of the j-th signal and the start time of transmission of the j+1-th signal of at least two signals; j is greater than or equal to 0.

[0121] In some embodiments, the time interval corresponding to a group of time-frequency resources is related to the time interval between adjacent signal transmissions of at least two signals. The time interval corresponding to a group of time-frequency resources may be determined based on the time interval between adjacent signal transmissions of at least two signals, or the time interval between adjacent signal transmissions of at least two signals may be determined based on the time interval corresponding to a group of time-frequency resources. Optionally, the time interval corresponding to a group of time-frequency resources is equal to the time interval between adjacent signal transmissions of at least two signals.

[0122] Optionally, the intervals may be equal intervals. In this case, the time intervals between transmissions of any adjacent signals in at least two signals are the same. Alternatively, the intervals may be unequal intervals. In this case, the time intervals between transmissions of two adjacent signals in at least two signals are different from the time intervals between transmissions of other two adjacent signals. The intervals may also be a combination of the above-described unequal intervals and the above-described equal intervals.

[0123] In some embodiments, the time interval corresponding to a group of time-frequency resources is related to the time interval between the start time of the jth signal transmission and the start time of the j+1th signal transmission among the at least two signals, and j is greater than or equal to 0. The time interval corresponding to a group of time-frequency resources may be determined based on the time interval between the start time of the jth signal transmission and the start time of the j+1th signal transmission among the at least two signals, or the time interval between the start time of the jth signal transmission and the start time of the j+1th signal transmission among the at least two signals may be determined based on the time interval corresponding to a group of time-frequency resources. Optionally, the time interval corresponding to a group of time-frequency resources is equal to the time interval between the start time of the jth signal transmission and the start time of the j+1th signal transmission among the at least two signals.

[0124] Optionally, the intervals may be equal intervals. Then, the time interval between the start time of transmission of any j-th signal and the start time of transmission of the j+1-th signal in the at least two signals is the same. The intervals may also be unequal intervals. Then, the time interval between the start time of transmission of at least one j-th signal and the start time of transmission of the j+1-th signal in the at least two signals is different from the time interval between the start time of transmission of any other j-th signal and the start time of transmission of the j+1-th signal. The intervals may also be a combination of the above-described unequal intervals and the above-described equal intervals.

[0125] In some embodiments, a group of time-frequency resources is continuous in the time domain, and the time interval corresponding to the group of time-frequency resources is configured as 0 or default.

[0126] In some embodiments, at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the at least two time-frequency resources correspond to different time-domain positions, wherein each of the at least two signals occupies one time-frequency resource.

[0127] Optionally, the time domain positions corresponding to at least two time-frequency resources are different, and the corresponding frequency domain positions are the same. Or, the time domain positions corresponding to at least two time-frequency resources are different, and the frequency domain positions corresponding to some of the at least two time-frequency resources are different.

[0128] In some embodiments, at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, wherein each of the at least two signals occupies one time-frequency resource, and the time domain positions corresponding to the at least two time-frequency resources are different, and the corresponding frequency domain positions are the same. Taking the case where the signal transmitting end device sends at least two signals as an example, for example, (1) in FIG5 shows a group of time-frequency resources 141, which includes 7 time-domain continuous time-frequency resources, which are arranged from earliest to latest according to the time domain position, namely time-frequency resource 1, time-frequency resource 2, time-frequency resource 3, time-frequency resource 4, time-frequency resource 5, time-frequency resource 6 and time-frequency resource 7. Among them, the signal transmitting end device sends signal 1, and signal 1 occupies time-frequency resource 1; sends signal 2, and signal 2 occupies time-frequency resource 2; sends signal 3, and signal 3 occupies time-frequency resource 3; sends signal 4, and signal 4 occupies time-frequency resource 4; sends signal 5, and signal 5 occupies time-frequency resource 5; sends signal 6, and signal 6 occupies time-frequency resource 6; sends signal 7, and signal 7 occupies time-frequency resource 7. Time-frequency resources 1, 2, 3, 4, 5, 6, and 7 have different time-domain locations but the same frequency-domain locations. When the signal receiving device receives at least two signals, the sending step of the signal transmitting device can be replaced with the receiving step of the signal receiving device.

[0129] In some embodiments, at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, wherein each of the at least two signals occupies one time-frequency resource, and the time domain positions corresponding to a portion of the at least two time-frequency resources are different, and the frequency domain positions corresponding to a portion of the at least two time-frequency resources are different. Taking the example of a signal transmitting end device transmitting at least two signals, for example, (1) in FIG5 shows a group of time-frequency resources 144, and the group of time-frequency resources 144 includes 14 time-frequency resources, wherein, according to the frequency domain position from highest to lowest and the time domain position from earliest to latest, the 14 time-frequency resources are time-frequency resource 1, time-frequency resource 2, time-frequency resource 3, time-frequency resource 4, time-frequency resource 5, time-frequency resource 6, time-frequency resource 7, time-frequency resource 8, time-frequency resource 9, time-frequency resource 10, time-frequency resource 11, time-frequency resource 12, time-frequency resource 13 and time-frequency resource 14. Among them, the signal sending end device sends signal 1, signal 1 occupies time-frequency resource 1; sends signal 2, signal 2 occupies time-frequency resource 2; sends signal 3, signal 3 occupies time-frequency resource 3; sends signal 4, signal 4 occupies time-frequency resource 4; sends signal 5, signal 5 occupies time-frequency resource 5; sends signal 6, signal 6 occupies time-frequency resource 6; sends signal 7, signal 7 occupies time-frequency resource 7; sends signal 8, signal 8 occupies time-frequency resource 8; sends signal 9, signal 9 occupies time-frequency resource 9; sends signal 10, signal 10 occupies time-frequency resource 10; sends signal 11, signal 11 occupies time-frequency resource 11; sends signal 12, signal 12 occupies time-frequency resource 12; sends signal 13, signal 13 occupies time-frequency resource 13; sends signal 14, signal 14 occupies time-frequency resource 14. Among them, time-frequency resource 1 and time-frequency resource 8, time-frequency resource 2 and time-frequency resource 9, time-frequency resource 3 and time-frequency resource 10, time-frequency resource 4 and time-frequency resource 11, time-frequency resource 5 and time-frequency resource 12, time-frequency resource 6 and time-frequency resource 13, and time-frequency resource 7 and time-frequency resource 14 have the same time domain positions and different frequency domain positions. Time-frequency resources 1 to 7 have different time domain positions and the same frequency domain positions, while time-frequency resources 8 to 14 have different time domain positions and the same frequency domain positions. When the signal receiving end device receives at least two signals, the sending step of the signal transmitting end device can be replaced with the receiving step of the signal receiving end device.

[0130] 3.1 Same Transmission Opportunity

[0131] In some embodiments, a group of time-frequency resources are time-frequency resources within the same transmission opportunity.

[0132] In some embodiments, within the same transmission opportunity, the signal transmitting end device sends at least two signals; within the same transmission opportunity, the signal receiving end device receives at least two signals, the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein, at least two signals are generated based on the same signal sequence.

[0133] In some embodiments, within the same transmission opportunity, a group of time-frequency resources are continuous in the time domain, or are spaced in the time domain.

[0134] In some embodiments, FIG6 shows a schematic diagram of a transmission opportunity provided by an exemplary embodiment of the present application. The horizontal axis of FIG6 represents time (time domain), and the vertical axis represents frequency (frequency domain). The physical resource corresponding to one subcarrier (Subcarrier) in the frequency domain and one symbol (Symbol) in the time domain is called one resource element (RE). The physical resource corresponding to 12 consecutive subcarriers in the frequency domain and one time slot (Slot) in the time domain is called one resource block (RB), and one time slot includes 7 symbols. A group of time-frequency resources 141 shown in (1) of FIG6 is a time-domain continuous time-frequency resource within the same transmission opportunity, a group of time-frequency resources 142 shown in (2) of FIG6 is a time-domain equally spaced time-frequency resource within the same transmission opportunity, and a group of time-frequency resources 143 shown in (3) of FIG6 is a time-domain unequally spaced time-frequency resource within the same transmission opportunity.

[0135] In some embodiments, transmission opportunities are periodic.

[0136] In some embodiments, the period of a transmission opportunity is configured by first configuration information, and the transmission opportunity may occur within the period. Optionally, the length of the transmission opportunity may be equal to the length of the period. Alternatively, the length of the transmission opportunity may be less than the length of the period. Here, the length refers to the length of time or the length of occupied time. The length of time may be expressed in absolute time or in the number of time domain units. The time domain unit may be a symbol or a time slot. When the time domain unit is a symbol, the time domain unit may also be referred to as a time unit. The length of a transmission opportunity refers to the time interval between the start time and the end time of the transmission opportunity. The length of a period refers to the time interval between the start time and the end time of the period.

[0137] In some embodiments, FIG7 illustrates a schematic diagram of a transmission opportunity provided by an exemplary embodiment of the present application. The horizontal axis in FIG7 represents time. The time interval between time point A and time point B is a period T, and a transmission opportunity may occur within this period T. The length of a transmission opportunity in FIG7 is the same as the length of the period. Signals may be transmitted starting at the start position A of the transmission opportunity, i.e., signals may be transmitted starting at the start position t1 of the period.

[0138] In some embodiments, Figure 8 shows a schematic diagram of a transmission opportunity provided by an exemplary embodiment of the present application. The horizontal axis in Figure 8 represents time, where the time interval between time point A and time point B is a period T. A transmission opportunity can occur within this period T, and the length of a transmission opportunity is less than the length of the period. Signal transmission can begin at the start position C of the transmission opportunity. There is a signal transmission starting point offset t_offset between the start position C of the transmission opportunity and the start position A of the period.

[0139] In some embodiments, the transmission opportunity is signaling triggered.

[0140] In some embodiments, the signaling may also be referred to as at least one of indication signaling, trigger signaling, or transmission opportunity trigger signaling.

[0141] In some embodiments, the type of signaling includes at least one of the following: Radio Resource Control (RRC) signaling; Non Access Stratum (NAS) signaling; Media Access Control (MAC) signaling; Downlink Control Information (DCI).

[0142] It should be noted that the signaling for triggering the time window and the signaling for triggering the transmission opportunity may be of the same type or different types.

[0143] In some embodiments, the signal transmitting end device or the signal receiving end device receives signaling, where the signaling is used to trigger a transmission opportunity.

[0144] In some embodiments, Figure 9 shows a schematic diagram of a transmission opportunity provided by an exemplary embodiment of the present application. A signal transmitting end device or a signal receiving end device receives signaling at time t1, and the signaling is used to trigger a transmission opportunity. The signaling may indicate that the starting position of the transmission opportunity is time t2, the length of the transmission opportunity is L, and the transmission duration of the signal is L. Or, the signaling may indicate that the starting position of the transmission opportunity is the position corresponding to time Δt after time t1, that is, the starting position of the transmission opportunity is t1+Δt, the length of the transmission opportunity is L, and the transmission duration of the signal is L. Optionally, t2 and Δt may be indicated in the signaling, or may be agreed upon in the protocol or pre-configured. L may be indicated in the signaling, or may be agreed upon in the protocol or pre-configured, and may also be determined based on the number of signals corresponding to the signal sequence and the time domain mapping method of at least two signals.

[0145] In some embodiments, the transmission opportunity is configured by first configuration information.

[0146] In some embodiments, the first configuration information is used to configure at least one of the following information: the length of the transmission opportunity; the period of the transmission opportunity; the starting position of the signal transmission within the transmission opportunity; the time domain mapping method of at least two signals; and the frequency domain mapping method of at least two signals.

[0147] In some embodiments, the length of a transmission opportunity refers to the duration of the transmission opportunity.

[0148] In some embodiments, the length of the transmission opportunity is related to at least one of the following information:

[0149] The number of signals corresponding to the signal sequence; the transmission time length of the signal sequence; the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence; the time interval between the start time of the first signal and the end time of the last signal corresponding to the signal sequence; the length of the time domain unit used to map the signal sequence; the number of time domain units used to map the signal sequence; the time interval between the time domain units used to map the signal sequence; wherein each time domain unit is used to map at least one signal.

[0150] In some embodiments, the length of a transmission opportunity is related to the number of signals corresponding to the signal sequence. The number of signals corresponding to the signal sequence can be determined based on the length of the transmission opportunity, or the length of the transmission opportunity can be determined based on the number of signals corresponding to the signal sequence. Optionally, the length of the transmission opportunity is positively correlated with the number of signals corresponding to the signal sequence; the greater the number of signals corresponding to the signal sequence, the longer the length of the transmission opportunity. For example, if the number of signals corresponding to the signal sequence is 4, where each signal occupies 1 symbol, then a set of time-frequency resources needs to include at least 4 symbols, and the length of the transmission opportunity is at least 4 symbols.

[0151] In some embodiments, the length of a transmission opportunity is related to the transmission time length of the signal sequence. The transmission time length of the signal sequence can be determined based on the length of the transmission opportunity, or can be determined based on the transmission time length of the signal sequence. Optionally, the length of the transmission opportunity is greater than or equal to the transmission time length of the signal sequence. For example, if the transmission time of the signal sequence is 10 milliseconds, then the length of the transmission opportunity is greater than or equal to 10 milliseconds.

[0152] In some embodiments, the length of the transmission opportunity is related to the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence. The time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence can be determined based on the length of the transmission opportunity, or the length of the transmission opportunity can be determined based on the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence. Optionally, the length of the transmission opportunity is greater than the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence. Optionally, the length of the transmission opportunity is equal to the sum of the time interval and the signal transmission duration of the last signal. The signal transmission duration of the last signal can be pre-configured or agreed upon by the protocol.

[0153] In some embodiments, the length of a transmission opportunity is related to the time interval between the start time of the first signal and the end time of the last signal in the signal sequence. The time interval between the start time of the first signal and the end time of the last signal in the signal sequence can be determined based on the length of the transmission opportunity, or the time interval between the start time of the first signal and the end time of the last signal in the signal sequence. Optionally, the length of the transmission opportunity is greater than or equal to the time interval between the start time of the first signal and the end time of the last signal in the signal sequence. For example, if the time interval between the start time of the first signal and the end time of the last signal in the signal sequence is 10 milliseconds, then the length of the transmission opportunity is greater than or equal to 10 milliseconds.

[0154] In some embodiments, the time interval is represented by at least one of the following information: N symbols; N time slots; N frames; N milliseconds; N seconds; wherein N is greater than or equal to 0, or N is greater than or equal to 1.

[0155] In some embodiments, the length of a transmission opportunity is related to the length of a time domain unit used to map a signal sequence. The length of the time domain unit used to map a signal sequence can be determined based on the length of the transmission opportunity, or can be determined based on the length of the time domain unit used to map a signal sequence. Optionally, the length of the transmission opportunity is greater than or equal to the total length of the time domain units used to map a signal sequence, where the total length refers to the sum of the lengths of the individual time domain units used to map a signal sequence.

[0156] In some embodiments, a time domain unit is at least one time unit used to map a signal sequence. A time unit is a basic unit for signal mapping, and each time unit is used to map one signal. For example, a time unit is configured as a symbol. Since a time domain unit is at least one time unit, each time domain unit is used to map at least one signal.

[0157] In some embodiments, the time domain unit is at least one of a first time domain unit and a second time domain unit, each second time domain unit includes at least two first time domain units, and each first time domain unit is used to map a signal. Optionally, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot.

[0158] In some embodiments, the length of the time domain unit used to map the signal sequence includes at least one of the following: the length of a first time domain unit used to map the signal sequence; the length of a second time domain unit used to map the signal sequence.

[0159] In some embodiments, the length of the transmission opportunity is greater than or equal to the total length of the time domain units used to map the signal sequence, where the total length of the time domain units used to map the signal sequence refers to the sum of the lengths of the first time domain units used to map the signal sequence, or refers to the sum of the lengths of the second time domain units used to map the signal sequence.

[0160] In some embodiments, the length of a transmission opportunity is related to the number of time-domain units used to map the signal sequence. The number of time-domain units used to map the signal sequence can be determined based on the length of the transmission opportunity, or the number of time-domain units used to map the signal sequence. Optionally, the length of the transmission opportunity is greater than or equal to the total length of the time-domain units used to map the signal sequence, where the total length is equal to the length of a single time-domain unit multiplied by the number of time-domain units.

[0161] In some embodiments, the number of time domain units used to map the signal sequence includes at least one of the following: the number of first time domain units used to map the signal sequence; and the number of second time domain units used to map the signal sequence.

[0162] In some embodiments, the length of the transmission opportunity is greater than or equal to the total length of the time domain units used to map the signal sequence, wherein the total length of the time domain units used to map the signal sequence refers to the length of a single first time domain unit used to map the signal sequence multiplied by the number of first time domain units, or refers to the length of a single second time domain unit used to map the signal sequence multiplied by the number of second time domain units.

[0163] In some embodiments, the length of the transmission opportunity is related to the time interval between the time domain units used to map the signal sequence. The time interval between the time domain units used to map the signal sequence can be determined based on the length of the transmission opportunity, or the length of the transmission opportunity can be determined based on the time interval between the time domain units used to map the signal sequence. Optionally, the length of the transmission opportunity is greater than or equal to the sum of the total time intervals corresponding to the time domain units and the total length. The total time interval refers to the sum of the time intervals between the time domain units used to map the signal sequence, and the total length refers to the sum of the lengths of the time domain units used to map the signal sequence.

[0164] In some embodiments, the time interval between time domain units used for mapping the signal sequence includes at least one of the following: the time interval between first time domain units used for mapping the signal sequence; and the time interval between second time domain units used for mapping the signal sequence.

[0165] In some embodiments, the length of the transmission opportunity is greater than or equal to the sum of the total time intervals corresponding to the first time domain unit and the total length. The total time interval refers to the sum of the time intervals between the first time domain units used to map the signal sequence, and the total length refers to the sum of the lengths of the first time domain units used to map the signal sequence. Alternatively, the length of the transmission opportunity is greater than or equal to the sum of the total time intervals corresponding to the second time domain unit and the total length. The total time interval refers to the sum of the time intervals between the second time domain units used to map the signal sequence, and the total length refers to the sum of the lengths of the second time domain units used to map the signal sequence.

[0166] In some embodiments, a period is configured by the first configuration information, and a transmission opportunity may occur within the period.

[0167] In some embodiments, if the length of a transmission opportunity is equal to the length of a cycle, the starting position of the transmission opportunity is the same as the starting position of the cycle. Alternatively, if the length of a transmission opportunity is less than the length of a cycle, the starting position of the transmission opportunity is later than the starting position of the cycle. The time offset between the starting position of a transmission opportunity and the starting position of a cycle can be referred to as a signal transmission start offset.

[0168] In some embodiments, when the length of a transmission opportunity is equal to the length of a cycle, the length of the transmission opportunity may not be configured.

[0169] In some embodiments, the first configuration information may further be used to configure at least one of the number of transmission opportunity cycles and the number of transmission opportunities. If the first configuration information does not configure the number of transmission opportunity cycles or the number of transmission opportunities, the number of transmission opportunity cycles or the number of transmission opportunities may be extended indefinitely until the signal transmitting device or the signal receiving device receives signaling to terminate or reconfigure the cycle or transmission opportunity.

[0170] In some embodiments, the period of transmission opportunity is related to at least one of the following information: the transmission period of the signal sequence; the time interval between the start time of the i-th signal sequence and the start time of the (i+1)-th signal sequence; i is greater than or equal to 0.

[0171] In some embodiments, the transmission period of a signal sequence includes the time interval between the i-th signal sequence and the i+1-th signal sequence, where i is greater than or equal to 0. For example, the transmission period of a signal sequence may be the time interval between the start position of signal transmission of the first signal of the i-th signal sequence and the start position of signal transmission of the first signal corresponding to the i+1-th signal sequence. The period of a transmission opportunity is related to the transmission period of the signal sequence. The transmission period of a signal sequence may be determined based on the period of the transmission opportunity, or may be determined based on the transmission period of the signal sequence. Optionally, the period of a transmission opportunity is greater than or equal to the transmission period of the signal sequence.

[0172] In some embodiments, the starting moment of the i-th signal sequence is the starting position of the signal transmission of the first signal corresponding to the i-th signal sequence, where i is greater than or equal to 0. The starting moment of the i+1-th signal sequence is the starting position of the signal transmission of the first signal corresponding to the i+1-th signal sequence. The period of the transmission opportunity is related to the time interval between the starting moment of the i-th signal sequence and the starting moment of the i+1-th signal sequence. The time interval between the starting moment of the i-th signal sequence and the starting moment of the i+1-th signal sequence can be determined according to the period of the transmission opportunity, or the period of the transmission opportunity can be determined according to the time interval between the starting moment of the i-th signal sequence and the starting moment of the i+1-th signal sequence. Optionally, the period of the transmission opportunity is greater than or equal to the time interval between the starting moment of the i-th signal sequence and the starting moment of the i+1-th signal sequence.

[0173] In some embodiments, as shown in FIG7 , the length between time point A and time point B is the transmission period of the signal sequence, and the period of the transmission opportunity can be indicated by the transmission period of the signal sequence. Taking i = 1 as an example, the start time of the first signal sequence is time point A, the end time of the first signal sequence is time point B, and the start time of the second signal sequence is time point B. The period of the transmission opportunity can be indicated by the time interval between the start time of the first signal sequence and the start time of the second signal sequence.

[0174] In some embodiments, the starting position of signal transmission within a transmission opportunity refers to the starting position of signal transmission of the first signal corresponding to the signal sequence. The starting position of signal transmission within a transmission opportunity may also be referred to as a signal transmission starting point or a signal transmission starting time point.

[0175] In some embodiments, the starting position of signal transmission within a transmission opportunity can be the same as the starting position of the transmission opportunity. If the length of the transmission opportunity is equal to the length of the period, the starting position of signal transmission within the transmission opportunity is the starting position of the period. Exemplarily, the starting position of signal transmission within a transmission opportunity is the starting position of the transmission opportunity, and the ending position of signal transmission within the transmission opportunity is the ending position of the transmission opportunity.

[0176] In the above embodiment, when a group of time-frequency resources are time-frequency resources located within the same transmission opportunity, the starting position of the transmission opportunity is the same as the starting position of the signal transmission, and the ending position of the transmission opportunity is also the same as the ending position of the signal transmission, the length of the transmission opportunity is equal to the transmission time length of the signal sequence, which is equivalent to determining the transmission opportunity when a group of time-frequency resources is determined.

[0177] In some embodiments, as shown in FIG8 , if signal transmission starts at a starting position A of a transmission opportunity, the starting position of signal transmission in the transmission opportunity may be indicated by the signal transmission starting position A. As shown in FIG8 , if signal transmission starts at a starting position C of a signal transmission, the starting position of signal transmission of the first signal corresponding to the signal sequence may be indicated by the signal transmission starting position of the transmission opportunity.

[0178] In some embodiments, the first configuration information may also be used to configure the time domain mapping mode of at least two signals within a transmission opportunity. It should be noted that the time domain mapping mode of at least two signals may be configured by the first configuration information or the second configuration information.

[0179] In some embodiments, the time domain mapping method of at least two signals includes at least one of the following: mapping on at least two consecutive first time domain units; mapping within at least two consecutive second time domain units; mapping on at least two spaced first time domain units; mapping within at least two spaced second time domain units; mapping within one second time domain unit.

[0180] In some embodiments, the interval includes at least one of equal intervals and unequal intervals. Mapping the at least two first time domain units of the interval includes at least one of mapping the at least two first time domain units of equal intervals and mapping the at least two first time domain units of unequal intervals. Mapping the at least two second time domain units of the interval includes at least one of mapping the at least two second time domain units of equal intervals and mapping the at least two second time domain units of unequal intervals.

[0181] In some embodiments, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. The at least two signals can then be mapped onto at least two consecutive symbols, or mapped within at least two consecutive time slots, or mapped onto at least two alternate symbols, or mapped within at least two alternate time slots, or mapped within a single time slot.

[0182] In some embodiments, the time domain mapping of at least two signals is taken as an example of mapping in at least two continuous second time domain units and mapping in at least two interval second time domain units. The second time domain unit is configured as a time slot. Figure 10 shows a schematic diagram of the time domain mapping of the signal provided by an embodiment of the present application. As shown in (1) in Figure 10, the multiple time slots corresponding to the same transmission opportunity can be continuous, wherein the same transmission opportunity is configured as 7 time slots, the time interval between adjacent time slots is configured as 0 or default, and at least two signals are mapped in continuous time slots. As shown in (2) in Figure 10, the multiple time slots corresponding to the same transmission opportunity can be equally spaced, wherein the same transmission opportunity is configured as 4 time slots, the time interval between any two adjacent time slots is 1, and at least two signals are mapped in equally spaced time slots. As shown in (3) in Figure 10, the multiple time slots corresponding to the same transmission opportunity can be equally spaced, wherein the same transmission opportunity is configured as 3 time slots, the time interval between any two adjacent time slots is 2, and at least two signals are mapped in equally spaced time slots.

[0183] In some embodiments, the time domain mapping of at least two signals is taken as an example, that is, mapping on at least two continuous first time domain units and mapping on at least two spaced first time domain units. The first time domain unit is configured as a symbol. Figure 11 shows a schematic diagram of the time domain mapping of signals provided by an exemplary embodiment of the present application. Within the same transmission opportunity, as shown in (1) in Figure 11, at least two signals are mapped on continuous symbols, and the time interval between adjacent symbols is configured to be 0 or default. As shown in (2) in Figure 11, at least two signals are mapped on equally spaced symbols, and the time interval between any two adjacent symbols is 1. As shown in (3) in Figure 11, at least two signals are mapped on equally spaced symbols, and the time interval between any two adjacent symbols is 3.

[0184] In some embodiments, since a time slot includes at least two symbols, if the same transmission opportunity is within a time slot, the at least two symbols within the time slot may be continuous or spaced apart. Therefore, within a time slot, at least two signals may be mapped onto at least two continuous symbols, or onto at least two spaced apart symbols. If the same transmission opportunity is within multiple spaced time slots, the at least two symbols within any of the spaced time slots may be continuous or spaced apart. Therefore, within any of the spaced time slots, at least two signals may be mapped onto at least two continuous symbols, or onto at least two spaced apart symbols.

[0185] In some embodiments, mapping within a second time domain unit includes at least one of the following: mapping on at least two consecutive first time domain units within a second time domain unit; mapping on at least two spaced first time domain units within a second time domain unit.

[0186] In some embodiments, mapping within at least two interval second time domain units includes at least one of the following: mapping on at least two consecutive first time domain units within any interval second time domain unit; mapping on at least two interval first time domain units within any interval second time domain unit.

[0187] In some embodiments, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. Then at least two signals can be mapped on at least two consecutive symbols in any time slot of the interval. For example, the time domain mapping method of at least two signals is a combination of (2) shown in Figure 10 and (1) shown in Figure 11. Or, the time domain mapping method of at least two signals is a combination of (3) shown in Figure 10 and (1) shown in Figure 11. Or, at least two signals can be mapped on at least two consecutive symbols in any time slot of the interval. For example, the time domain mapping method of at least two signals is a combination of (2) shown in Figure 10 and (2) shown in Figure 11. Or, the time domain mapping method of at least two signals is a combination of (2) shown in Figure 10 and (3) shown in Figure 11. Or, the time domain mapping method of at least two signals is a combination of (3) shown in Figure 10 and (2) shown in Figure 11. Alternatively, the time domain mapping manner of at least two signals is a combination of that shown in (3) in FIG. 10 and that shown in (3) in FIG. 11 .

[0188] In some embodiments, the first configuration information may also be used to configure the frequency domain mapping mode of at least two signals within the transmission opportunity. It should be noted that the frequency domain mapping mode of at least two signals may be configured by the first configuration information or by the third configuration information.

[0189] In some embodiments, the frequency domain mapping manner of the at least two signals includes at least one of the following: mapping on continuous frequency domain resource units; mapping on spaced frequency domain resource units.

[0190] In some embodiments, the frequency domain resource unit includes at least one of the following: a subcarrier (Subcarrier); a resource block (Resource Block, RB); and a resource element (Resource Element, RE).

[0191] Optionally, within the same transmission opportunity, at least two signals may be mapped onto consecutive subcarriers, or mapped onto consecutive resource blocks, or mapped onto consecutive resource elements. The at least two signals may also be mapped onto interspaced subcarriers, or mapped onto interspaced resource blocks, or mapped onto interspaced resource elements. The interspace may be at least one of equal intervals and unequal intervals.

[0192] In some embodiments, a group of time-frequency resources within the same transmission opportunity are within a time slot. Figure 12 shows a schematic diagram of continuous mapping of signals within a time slot provided by an exemplary embodiment of the present application. k is the index of the subcarrier where the signal is located, and the signal is mapped sequentially on continuous resource elements of different symbols of the same subcarrier. Starting from l=0, the index of the resource element (k, l=0) maps signal 1 (s1) corresponding to the signal sequence, the index of the resource element (k, l=1) maps signal 2 (s2) corresponding to the signal sequence, the index of the resource element (k, l=2) maps signal 3 (s1) corresponding to the signal sequence, and so on, the index of the resource element (k, l=13) maps signal 14 (s14) corresponding to the signal sequence. The signals corresponding to the signal sequence are mapped one by one on a group of time-frequency resources.

[0193] In some embodiments, a group of time-frequency resources within the same transmission opportunity are within multiple consecutive time slots. The signals corresponding to the signal sequence are mapped in the order of the time slots. Figure 13 shows a schematic diagram of the continuous mapping of signals in multiple time slots provided by an exemplary embodiment of the present application. k is the index of the subcarrier where the signal is located. The signal is mapped on consecutive symbols in any time slot of the multiple time slots. Each time slot includes 14 symbols, then the indexes (k, l = 0) to (k, l = 13) of the resource elements in time slot 1 are respectively mapped to signals 1 (s1) to 14 (s14) corresponding to the signal sequence, the indexes (k, l = 0) to (k, l = 13) of the resource elements in time slot 2 are respectively mapped to signals 15 (s15) to 28 (s28) corresponding to the signal sequence, and the indexes (k, l = 0) to (k, l = 13) of the resource elements in time slot 3 are respectively mapped to signals 29 (s29) to 42 (s42) corresponding to the signal sequence.

[0194] In some embodiments, a group of time-frequency resources within the same transmission opportunity are within a time slot. Figure 14 shows a schematic diagram of the interval mapping of signals within a time slot provided by an exemplary embodiment of the present application. k is the index of the subcarrier where the signal is located, the interval is equally spaced and the time interval is 1, and the signal is mapped sequentially on the resource elements with a time interval of 1 of different symbols of the same subcarrier. Starting from l=0, the index of the resource element (k, l=0) maps the signal 1 (s1) corresponding to the signal sequence, the index of the resource element (k, l=2) maps the signal 2 (s2) corresponding to the signal sequence, the index of the resource element (k, l=4) maps the signal 3 (s3) corresponding to the signal sequence, and so on, the index of the resource element (k, l=12) maps the signal 7 (s7) corresponding to the signal sequence. The signals corresponding to the signal sequence are mapped one by one on a group of time-frequency resources.

[0195] In some embodiments, within a set of time-frequency resources within the same transmission opportunity, signals corresponding to a signal sequence are mapped in the order of the time slots. Figure 15 shows a schematic diagram of interval mapping of signals within multiple time slots, provided by an exemplary embodiment of the present application. k is the index of the subcarrier where the signal resides. The signal is mapped to interval symbols within any time slot of the multiple time slots, with the intervals being equally spaced and the time interval being 1. Each time slot includes 14 symbols, so the indexes of the resource elements in time slot 1 (k, l = 0), (k, l = 2), (k, l = 4), ..., (k, l = 12) respectively map the signal sequence corresponding to signal 1 (s1) to signal 7 (s7), the indexes of the resource elements in time slot 2 (k, l = 0), (k, l = 2), (k, l = 4), ..., (k, l = 12) respectively map the signal sequence corresponding to signal 8 (s8) to signal 14 (s14), and the indexes of the resource elements in time slot 3 (k, l = 0), (k, l = 2), (k, l = 4), ..., (k, l = 12) respectively map the signal sequence corresponding to signal 15 (s15) to signal 21 (s21).

[0196] 3.2 Same time window

[0197] In some embodiments, a group of time-frequency resources are time-frequency resources within the same time window.

[0198] In some embodiments, within the same time window, a signal transmitting end device transmits at least two signals; within the same time window, a signal receiving end device receives at least two signals, at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to at least two time-frequency resources are different; wherein, at least two signals are generated based on the same signal sequence.

[0199] In some embodiments, within the same time window, a group of time-frequency resources are continuous in the time domain, or are spaced in the time domain.

[0200] In some embodiments, Figure 16 shows a schematic diagram of a time window provided by an exemplary embodiment of the present application. The horizontal axis of Figure 16 represents time (time domain), and the vertical axis represents frequency (frequency domain). The physical resource corresponding to one subcarrier (Subcarrier) in the frequency domain and one symbol (Symbol) in the time domain is called a resource element (RE). The physical resource corresponding to 12 consecutive subcarriers in the frequency domain and one time slot (Slot) in the time domain is called a resource block (RB), and one time slot includes 7 symbols. A group of time-frequency resources 141 shown in (1) of Figure 16 is a time-domain continuous time-frequency resource within the same time window, a group of time-frequency resources 142 shown in (2) of Figure 16 is a time-domain equally spaced time-frequency resource within the same time window, and a group of time-frequency resources 143 shown in (3) of Figure 16 is a time-domain unequally spaced time-frequency resource within the same time window.

[0201] In some embodiments, the time window is periodic.

[0202] In some embodiments, the period of the time window is configured by the first configuration information, and the time window may appear within the period. Optionally, the length of the time window may be equal to the length of the period. Or, the length of the time window may be less than the length of the period. Here, the length refers to the length of time or the length of occupied time. The length of time may be expressed in absolute time or in the number of time domain units. The time domain unit may be a symbol or a time slot. When the time domain unit is a symbol, the time domain unit may also be referred to as a time unit. The length of the time window refers to the time interval between the start time and the end time of the time window. The length of the period refers to the time interval between the start time and the end time of the period.

[0203] In some embodiments, FIG17 shows a schematic diagram of a time window provided by an exemplary embodiment of the present application. The horizontal axis in FIG17 represents time. The time interval between time point A and time point B is a period T, and the time window may occur within this period T. The length of the time window in FIG17 is the same as the length of the period. Signals may be transmitted starting from the starting position A of the time window, i.e., signals may be transmitted starting from the starting position t1 of the period.

[0204] In some embodiments, FIG18 shows a schematic diagram of a time window provided by an exemplary embodiment of the present application. The horizontal axis in FIG18 represents time. The time interval between time point A and time point B is a period T. A time window may occur within this period T, and the length of the time window is less than the length of the period. Signal transmission begins at the starting position C of the time window. There is a time window starting point offset t_offset between the starting position C of the time window and the starting position A of the period.

[0205] In some embodiments, the time window is signaling triggered.

[0206] In some embodiments, the signaling may also be referred to as at least one of indication signaling, trigger signaling, or time window trigger signaling.

[0207] In some embodiments, the type of signaling includes at least one of the following: radio resource control signaling; non-access stratum signaling; media access control signaling; downlink control information.

[0208] It should be noted that the signaling for triggering the time window and the signaling for triggering the transmission opportunity may be of the same type or different types.

[0209] In some embodiments, the signal transmitting end device or the signal receiving end device receives signaling, where the signaling is used to trigger the time window.

[0210] In some embodiments, Figure 19 shows a schematic diagram of a time window provided by an exemplary embodiment of the present application. In which, the signal transmitting end device or the signal receiving end device receives signaling at time t1, and the signaling is used to trigger the time window. The signaling may indicate that the starting position of the time window is time t2, the length of the time window is L, and the transmission duration of the signal is L. Or, the signaling may indicate that the starting position of the time window is the position corresponding to time Δt after time t1, that is, the starting position of the time window is t1+Δt, the length of the time window is L, and the transmission duration of the signal is L. Optionally, t2 and Δt may be indicated in the signaling, or may be agreed upon in the protocol or pre-configured. L may be indicated in the signaling, or may be agreed upon in the protocol or pre-configured, and may also be determined based on the number of signals corresponding to the signal sequence and the time domain mapping method of at least two signals.

[0211] In some embodiments, the time window is configured by first configuration information.

[0212] In some embodiments, the first configuration information is used to configure at least one of the following information: the length of the time window; the period of the time window; the time window starting point offset; the starting position of the signal transmission within the time window; the time domain mapping method of at least two signals; and the frequency domain mapping method of at least two signals.

[0213] In some embodiments, the length of the time window refers to the duration corresponding to the time window.

[0214] In some embodiments, the length of the time window is related to at least one of the following information: the number of signals corresponding to the signal sequence; the transmission time length of the signal sequence; the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence; the time interval between the start time of the first signal and the end time of the last signal corresponding to the signal sequence; the length of the time domain unit used to map the signal sequence; the number of time domain units used to map the signal sequence; the time interval between the time domain units used to map the signal sequence; wherein each time domain unit is used to map at least one signal.

[0215] In some embodiments, the length of the time window is related to the number of signals corresponding to the signal sequence. The number of signals corresponding to the signal sequence can be determined based on the length of the time window, or the length of the time window can be determined based on the number of signals corresponding to the signal sequence. Optionally, the length of the time window is positively correlated with the number of signals corresponding to the signal sequence. The more signals corresponding to the signal sequence, the longer the time window. For example, if the number of signals corresponding to the signal sequence is 4, where each signal occupies 1 symbol, then a set of time-frequency resources needs to include at least 4 symbols, and the length of the time window is at least 4 symbols.

[0216] In some embodiments, the length of the time window is related to the transmission time length of the signal sequence. The transmission time length of the signal sequence can be determined based on the length of the time window, or the length of the time window can be determined based on the transmission time length of the signal sequence. Optionally, the length of the time window is greater than or equal to the transmission time length of the signal sequence. For example, if the transmission time of the signal sequence is 10 milliseconds, then the length of the time window is greater than or equal to 10 milliseconds.

[0217] In some embodiments, the length of the time window is related to the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence. The time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence can be determined based on the length of the time window, or the length of the time window can be determined based on the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence. Optionally, the length of the time window is greater than the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence. The length of the time window is equal to the sum of the time interval and the signal transmission duration of the last signal. The signal transmission duration of the last signal can be pre-configured or agreed upon by the protocol.

[0218] In some embodiments, the length of the time window is related to the time interval between the start time of the first signal and the end time of the last signal corresponding to the signal sequence. The time interval between the start time of the first signal and the end time of the last signal corresponding to the signal sequence can be determined based on the length of the time window, or the length of the time window can be determined based on the time interval between the start time of the first signal and the end time of the last signal corresponding to the signal sequence. Optionally, the length of the time window is greater than or equal to the time interval between the start time of the first signal and the end time of the last signal corresponding to the signal sequence. For example, if the time interval between the start time of the first signal and the end time of the last signal corresponding to the signal sequence is 10 milliseconds, then the length of the time window is greater than or equal to 10 milliseconds.

[0219] In some embodiments, the time interval is represented by at least one of the following information: N symbols; N time slots; N frames; N milliseconds; N seconds; wherein N is greater than or equal to 0, or N is greater than or equal to 1.

[0220] In some embodiments, the length of the time window is related to the length of the time domain unit used to map the signal sequence. The length of the time domain unit used to map the signal sequence can be determined based on the length of the time window, or the length of the time window can be determined based on the length of the time domain unit used to map the signal sequence. Optionally, the length of the time window is greater than or equal to the total length of the time domain units used to map the signal sequence, where the total length refers to the sum of the lengths of the individual time domain units used to map the signal sequence.

[0221] In some embodiments, a time domain unit is at least one time unit used to map a signal sequence. A time unit is a basic unit for signal mapping, and each time unit is used to map one signal. For example, a time unit is configured as a symbol. Since a time domain unit is at least one time unit, each time domain unit is used to map at least one signal.

[0222] In some embodiments, the time domain unit is at least one of a first time domain unit and a second time domain unit, each second time domain unit includes at least two first time domain units, and each first time domain unit is used to map a signal. Optionally, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot.

[0223] In some embodiments, the length of the time domain unit used to map the signal sequence includes at least one of the following: the length of a first time domain unit used to map the signal sequence; the length of a second time domain unit used to map the signal sequence.

[0224] In some embodiments, the length of the time window is greater than or equal to the total length of the time domain units used to map the signal sequence, wherein the total length of the time domain units used to map the signal sequence refers to the sum of the lengths of the first time domain units used to map the signal sequence, or refers to the sum of the lengths of the second time domain units used to map the signal sequence.

[0225] In some embodiments, the length of the time window is related to the number of time-domain units used to map the signal sequence. The number of time-domain units used to map the signal sequence can be determined based on the length of the time window, or the length of the time window can be determined based on the number of time-domain units used to map the signal sequence. Optionally, the length of the time window is greater than or equal to the total length of the time-domain units used to map the signal sequence, where the total length is equal to the length of a single time-domain unit multiplied by the number of time-domain units.

[0226] In some embodiments, the number of time domain units used to map the signal sequence includes at least one of the following: the number of first time domain units used to map the signal sequence; and the number of second time domain units used to map the signal sequence.

[0227] In some embodiments, the length of the time window is greater than or equal to the total length of the time domain units used to map the signal sequence. The total length of the time domain units used to map the signal sequence refers to the length of a single first time domain unit used to map the signal sequence multiplied by the number of first time domain units, or refers to the length of a single second time domain unit used to map the signal sequence multiplied by the number of second time domain units.

[0228] In some embodiments, the length of the time window is related to the time interval between the time domain units used to map the signal sequence. The time interval between the time domain units used to map the signal sequence can be determined based on the length of the time window, or the length of the time window can be determined based on the time interval between the time domain units used to map the signal sequence. Optionally, the length of the time window is greater than or equal to the sum of the total time intervals and the total length corresponding to the time domain units. The total time interval refers to the sum of the time intervals between the time domain units used to map the signal sequence, and the total length refers to the sum of the lengths of the time domain units used to map the signal sequence.

[0229] In some embodiments, the time interval between time domain units used for mapping the signal sequence includes at least one of the following: the time interval between first time domain units used for mapping the signal sequence; and the time interval between second time domain units used for mapping the signal sequence.

[0230] In some embodiments, the length of the time window is greater than or equal to the sum of the total time intervals corresponding to the first time domain unit and the total length. The total time interval refers to the sum of the time intervals between the first time domain units used to map the signal sequence, and the total length refers to the sum of the lengths of the first time domain units used to map the signal sequence. Alternatively, the length of the time window is greater than or equal to the sum of the total time intervals corresponding to the second time domain unit and the total length. The total time interval refers to the sum of the time intervals between the second time domain units used to map the signal sequence, and the total length refers to the sum of the lengths of the second time domain units used to map the signal sequence.

[0231] In some embodiments, the period is configured by the first configuration information, and the time window may occur within the period.

[0232] In some embodiments, if the length of the time window is equal to the length of the period, the starting position of the time window is the same as the starting position of the period. Alternatively, if the length of the time window is less than the length of the period, the starting position of the time window is later than the starting position of the period. The time offset between the starting position of the time window and the starting position of the period can be referred to as the time window starting offset.

[0233] In some embodiments, when the length of the time window is equal to the length of the cycle, the length of the time window may not be configured.

[0234] In some embodiments, the first configuration information may further be used to configure at least one of the number of time window periods and the number of time window times. If the first configuration information does not configure the number of time window periods or the number of time windows, the number of time window periods or the number of time windows may extend indefinitely until the signal transmitting device or the signal receiving device receives signaling to terminate or reconfigure the period or time window.

[0235] In some embodiments, the period of the time window is related to at least one of the following information: the transmission period of the signal sequence; the time interval between the start time of the i-th signal sequence and the start time of the (i+1)-th signal sequence; i is greater than or equal to 0.

[0236] In some embodiments, the transmission period of a signal sequence includes the time interval between the i-th signal sequence and the i+1-th signal sequence, where i is greater than or equal to 0. For example, the transmission period of a signal sequence may be the time interval between the start position of signal transmission of the first signal of the i-th signal sequence and the start position of signal transmission of the first signal corresponding to the i+1-th signal sequence. The period of the time window is related to the transmission period of the signal sequence. The transmission period of the signal sequence can be determined based on the period of the time window, or the period of the time window can be determined based on the transmission period of the signal sequence. Optionally, the period of the time window is greater than or equal to the transmission period of the signal sequence.

[0237] In some embodiments, the starting moment of the i-th signal sequence is the starting position of the signal transmission of the first signal corresponding to the i-th signal sequence, where i is greater than or equal to 0. The starting moment of the i+1-th signal sequence is the starting position of the signal transmission of the first signal corresponding to the i+1-th signal sequence. The period of the time window is related to the time interval between the starting moment of the i-th signal sequence and the starting moment of the i+1-th signal sequence. The time interval between the starting moment of the i-th signal sequence and the starting moment of the i+1-th signal sequence can be determined according to the period of the time window, or the period of the time window can be determined according to the time interval between the starting moment of the i-th signal sequence and the starting moment of the i+1-th signal sequence. Optionally, the period of the time window is greater than or equal to the time interval between the starting moment of the i-th signal sequence and the starting moment of the i+1-th signal sequence.

[0238] In some embodiments, as shown in FIG17 , the length between time point A and time point B is the transmission period of the signal sequence, and the period of the time window can be indicated by the transmission period of the signal sequence. Taking i = 1 as an example, the start time of the first signal sequence is time point A, the end time of the first signal sequence is time point B, and the start time of the second signal sequence is time point B. The period of the time window can be indicated by the time interval between the start time of the first signal sequence and the start time of the second signal sequence.

[0239] In some embodiments, the starting position of signal transmission within a time window refers to the starting position of signal transmission of the first signal corresponding to the signal sequence. The starting position of signal transmission within a time window can also be called a signal transmission starting point or a signal transmission starting time point.

[0240] In some embodiments, the starting position of signal transmission within a time window may be the same as the starting position of the time window. Specifically, if the length of the time window is equal to the length of the period, the starting position of signal transmission within the time window is the starting position of the period. Alternatively, the starting position of signal transmission within the time window may be later than the starting position of the time window. In this embodiment, the starting position of signal transmission within the time window may be the starting position of the time window, and the ending position of signal transmission within the time window may be earlier than the ending position of the time window. Alternatively, the starting position of signal transmission within the time window may be the starting position of the time window, and the ending position of signal transmission within the time window may be the ending position of the time window. Alternatively, the starting position of signal transmission within the time window may be later than the starting position of the time window, and the ending position of signal transmission within the time window may be the ending position of the time window. Alternatively, the starting position of signal transmission within the time window may be later than the starting position of the time window, and the ending position of signal transmission within the time window may be earlier than the ending position of the time window.

[0241] In the above embodiment, when a group of time-frequency resources are time-frequency resources within the same time window, the starting position of the signal transmission within the time window is equal to or later than the starting position of the time window, and the ending position of the signal transmission within the time window is earlier than or equal to the ending position of the time window, the length of the time window is greater than or equal to the transmission time length of the signal sequence, which is equivalent to first determining the time window and then determining a group of time-frequency resources.

[0242] In some embodiments, as shown in FIG17 , if a signal is transmitted starting from a starting position A of a time window, the starting position of the signal transmission may be used to indicate the starting position of the signal transmission in the time window. As shown in FIG18 , if a signal is transmitted starting from a starting position C of a time window, the starting position of the signal transmission of the first signal corresponding to the signal sequence may be used to indicate the starting position of the signal transmission in the time window.

[0243] In some embodiments, the first configuration information may also be used to configure a time domain mapping mode of at least two signals within the time window. It should be noted that the time domain mapping mode of at least two signals may be configured by the first configuration information or the second configuration information.

[0244] In some embodiments, the time domain mapping method of at least two signals includes at least one of the following: mapping on at least two consecutive first time domain units; mapping within at least two consecutive second time domain units; mapping on at least two spaced first time domain units; mapping within at least two spaced second time domain units; mapping within one second time domain unit.

[0245] In some embodiments, the interval includes at least one of equal intervals and unequal intervals. Mapping on the at least two first time domain units of the interval includes at least one of mapping on the at least two first time domain units of equal intervals and mapping on the at least two first time domain units of unequal intervals. Mapping within the at least two second time domain units of the interval includes at least one of mapping within the at least two second time domain units of equal intervals and mapping within the at least two second time domain units of unequal intervals.

[0246] In some embodiments, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. The at least two signals can then be mapped onto at least two consecutive symbols, or mapped within at least two consecutive time slots, or mapped onto at least two alternate symbols, or mapped within at least two alternate time slots, or mapped within a single time slot.

[0247] In some embodiments, the time domain mapping of at least two signals is taken as an example of mapping in at least two consecutive second time domain units and mapping in at least two interval second time domain units. The second time domain unit is configured as a time slot. Figure 20 shows a schematic diagram of the time domain mapping of signals provided by an embodiment of the present application. As shown in (1) of Figure 20, multiple time slots in the same time window can be continuous, wherein, 7 time slots are configured in the same time window, the time interval between adjacent time slots is configured as 0 or default, at least two signals are mapped in continuous time slots, and the starting position of the signal transmission of the first of the at least two signals can be 0. As shown in (2) of Figure 20, multiple time slots in the same time window can be continuous, wherein, 5 time slots are configured in the same time window, the time interval between adjacent time slots is configured as 0 or default, at least two signals are mapped in continuous time slots, and the starting position of the signal transmission of the first of the at least two signals can be 1. As shown in (3) of Figure 20, multiple time slots within the same time window can be equally spaced, wherein the same time window is configured with 4 time slots, the time interval between any two adjacent time slots is 1, and at least two signals are mapped in the equally spaced time slots. As shown in (4) of Figure 20, multiple time slots within the same time window can be equally spaced, wherein the same time window is configured with 3 time slots, the time interval between any two adjacent time slots is 2, and at least two signals are mapped in the equally spaced time slots.

[0248] In some embodiments, the time domain mapping of at least two signals is taken as an example of mapping in at least two continuous first time domain units and mapping in at least two spaced first time domain units. The first time domain unit is configured as a symbol. Figure 21 shows a schematic diagram of the time domain mapping of a signal provided by an exemplary embodiment of the present application. In the same time window, as shown in (1) in Figure 21, at least two signals are mapped on continuous symbols, and the time interval between adjacent symbols is configured as 0 or default. As shown in (2) in Figure 21, at least two signals are mapped on equally spaced symbols, and the time interval between any two adjacent symbols is 1. As shown in (3) in Figure 21, at least two signals are mapped on equally spaced symbols, and the time interval between any two adjacent symbols is 3.

[0249] In some embodiments, since a time slot includes at least two symbols, when the same time window is within a time slot, the at least two symbols within the time slot may be continuous or spaced apart. Therefore, within a time slot, at least two signals may be mapped onto at least two continuous symbols or onto at least two spaced apart symbols. When the same time window is within multiple spaced apart time slots, at least two symbols may be continuous or spaced apart within any of the multiple spaced apart time slots. Therefore, within any of the multiple spaced apart time slots, at least two signals may be mapped onto at least two continuous symbols or onto at least two spaced apart symbols.

[0250] In some embodiments, mapping within a second time domain unit includes at least one of the following: mapping on at least two consecutive first time domain units within a second time domain unit; mapping on at least two spaced first time domain units within a second time domain unit.

[0251] In some embodiments, mapping within at least two interval second time domain units includes at least one of the following: mapping on at least two consecutive first time domain units within any interval second time domain unit; mapping on at least two interval first time domain units within any interval second time domain unit.

[0252] In some embodiments, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. Then at least two signals can be mapped on at least two consecutive symbols in any time slot of the interval. For example, the time domain mapping method of at least two signals is a combination of (3) shown in Figure 20 and (1) shown in Figure 21. Or, the time domain mapping method of at least two signals is a combination of (4) shown in Figure 20 and (1) shown in Figure 21. Or, at least two signals can be mapped on at least two consecutive symbols in any time slot of the interval. For example, the time domain mapping method of at least two signals is a combination of (3) shown in Figure 20 and (2) shown in Figure 21. Or, the time domain mapping method of at least two signals is a combination of (3) shown in Figure 20 and (3) shown in Figure 21. Or, the time domain mapping method of at least two signals is a combination of (4) shown in Figure 20 and (2) shown in Figure 21. Alternatively, the time domain mapping manner of at least two signals is a combination of that shown in (4) in FIG. 20 and that shown in (3) in FIG. 21 .

[0253] In some embodiments, the first configuration information may also be used to configure the frequency domain mapping mode of at least two signals within the time window. It should be noted that the frequency domain mapping mode of at least two signals may be configured by the first configuration information or by the third configuration information.

[0254] In some embodiments, the frequency domain mapping manner of the at least two signals includes at least one of the following: mapping on continuous frequency domain resource units; mapping on spaced frequency domain resource units.

[0255] In some embodiments, the frequency domain resource unit includes at least one of the following: a subcarrier; a resource block; a resource element.

[0256] Optionally, within the same time window, at least two signals may be mapped onto consecutive subcarriers, or mapped onto consecutive resource blocks, or mapped onto consecutive resource elements. The at least two signals may also be mapped onto spaced subcarriers, or mapped onto spaced resource blocks, or mapped onto spaced resource elements. The spacing may include at least one of equal spacing and unequal spacing.

[0257] In some embodiments, a group of time-frequency resources within the same time window are within a time slot. Figure 13 shows a schematic diagram of continuous mapping of signals within a time slot provided by an exemplary embodiment of the present application. k is the index of the subcarrier where the signal is located, and the signal is mapped sequentially on continuous resource elements of different symbols of the same subcarrier. Starting from l=0, the index of the resource element (k, l=0) maps signal 1 (s1) corresponding to the signal sequence, the index of the resource element (k, l=1) maps signal 2 (s2) corresponding to the signal sequence, the index of the resource element (k, l=2) maps signal 3 (s1) corresponding to the signal sequence, and so on, the index of the resource element (k, l=13) maps signal 14 (s14) corresponding to the signal sequence. The signals corresponding to the signal sequence are mapped one by one on a group of time-frequency resources.

[0258] In some embodiments, a set of time-frequency resources within the same time window is within multiple consecutive time slots. The signals corresponding to the signal sequence are mapped in the order of the time slots. The schematic diagram of the continuous mapping of signals within multiple time slots in this embodiment can still be referred to Figure 13 and will not be repeated here.

[0259] In some embodiments, a group of time-frequency resources in the same time window is within a time slot. The schematic diagram of interval mapping of signals in this embodiment within a time slot can still refer to FIG14 and will not be repeated here.

[0260] In some embodiments, a group of time-frequency resources within the same time window is mapped in multiple consecutive time slots, and the signals corresponding to the signal sequence are mapped in the order of the time slots. The schematic diagram of the interval mapping of signals in multiple time slots in this embodiment can still be referred to Figure 15, and will not be repeated here.

[0261] 3.3 Time Domain Related Configuration

[0262] In some embodiments, a signal transmitting end device transmits at least two signals; a signal receiving end device receives at least two signals; the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different.

[0263] In some embodiments, the time domain position corresponding to a group of time-frequency resources is configured by second configuration information.

[0264] In some embodiments, the second configuration information is used to configure at least one of the following information: the number of time domain units corresponding to a group of time-frequency resources; the length of the time domain unit corresponding to a group of time-frequency resources; the time interval between the time domain units corresponding to a group of time-frequency resources; the time domain mapping method of at least two signals; wherein each time domain unit is used to map at least one signal.

[0265] In some embodiments, the number of time-domain units corresponding to a set of time-frequency resources is related to at least one of the following information:

[0266] The length of the signal sequence; the number of signals corresponding to the signal sequence.

[0267] In some embodiments, a time domain unit is at least one time unit used to map a signal sequence. A time unit is a basic unit for signal mapping, and each time unit is used to map one signal. For example, a time unit is configured as a symbol. Since a time domain unit is at least one time unit, each time domain unit is used to map at least one signal.

[0268] In some embodiments, the time domain unit is at least one of a first time domain unit and a second time domain unit, each second time domain unit includes at least two first time domain units, and each first time domain unit is used to map a signal.

[0269] In some embodiments, the number of time domain units corresponding to a group of time-frequency resources includes at least one of the following: the number of first time domain units corresponding to a group of time-frequency resources; the number of second time domain units corresponding to a group of time-frequency resources.

[0270] Optionally, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. The number of first time domain units corresponding to a group of time-frequency resources refers to the number of symbols corresponding to a group of time-frequency resources, and a group of time-frequency resources corresponds to at least two symbols. The number of second time domain units corresponding to a group of time-frequency resources refers to the number of time slots corresponding to a group of time-frequency resources, and a group of time-frequency resources corresponds to at least one time slot.

[0271] In some embodiments, the length of the time domain unit corresponding to a group of time-frequency resources includes at least one of the following: the length of a first time domain unit corresponding to a group of time-frequency resources; the length of a second time domain unit corresponding to a group of time-frequency resources.

[0272] Optionally, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. The length of the first time domain unit corresponding to a group of time-frequency resources refers to the length of the symbol corresponding to the group of time-frequency resources. The length of the second time domain unit corresponding to a group of time-frequency resources refers to the length of the time slot corresponding to the group of time-frequency resources, where a time slot includes at least two symbols.

[0273] In some embodiments, the time interval between time domain units corresponding to a group of time-frequency resources includes at least one of the following: the time interval between first time domain units corresponding to a group of time-frequency resources; the time interval between second time domain units corresponding to a group of time-frequency resources.

[0274] Optionally, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. The time interval between the first time domain units corresponding to a group of time-frequency resources refers to the time interval between adjacent symbols corresponding to a group of time-frequency resources. Wherein, when a group of time-frequency resources is continuous in the time domain, the time interval between adjacent symbols is configured to 0 or default. When a group of time-frequency resources is equally spaced in the time domain, the time interval between any two adjacent symbols is the same. When a group of time-frequency resources is unequally spaced in the time domain, there is a time interval between at least a part of adjacent symbols that is different from the time interval between other adjacent symbols.

[0275] Optionally, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. The time interval between the second time domain units corresponding to a group of time-frequency resources refers to the time interval between adjacent time slots corresponding to a group of time-frequency resources. The time interval between adjacent time slots is configured as 0 or default, or the time interval between any two adjacent time slots is the same, or the time interval between at least some adjacent time slots is different from the time interval between other adjacent time slots.

[0276] In some embodiments, the time domain mapping method of at least two signals includes at least one of the following: mapping on at least two consecutive first time domain units; mapping within at least two consecutive second time domain units; mapping on at least two spaced first time domain units; mapping within at least two spaced second time domain units; mapping within one second time domain unit.

[0277] In some embodiments, the interval includes at least one of equal intervals and unequal intervals. Mapping on the at least two first time domain units of the interval includes at least one of mapping on the at least two first time domain units of equal intervals and mapping on the at least two first time domain units of unequal intervals. Mapping within the at least two second time domain units of the interval includes at least one of mapping within the at least two second time domain units of equal intervals and mapping within the at least two second time domain units of unequal intervals.

[0278] In some embodiments, the first time domain unit is configured as a symbol, and the second time domain unit is configured as a time slot. The at least two signals can then be mapped onto at least two consecutive symbols, or mapped within at least two consecutive time slots, or mapped onto at least two alternate symbols, or mapped within at least two alternate time slots, or mapped within a single time slot.

[0279] In some embodiments, mapping within a second time domain unit includes at least one of the following: mapping on at least two consecutive first time domain units within a second time domain unit; mapping on at least two spaced first time domain units within a second time domain unit.

[0280] In some embodiments, mapping within at least two interval second time domain units includes at least one of the following: mapping on at least two consecutive first time domain units within any interval second time domain unit; mapping on at least two interval first time domain units within any interval second time domain unit.

[0281] It should be noted that the specific description of the time domain mapping method of at least two signals in the above embodiment can refer to the time domain mapping method of at least two signals in the first configuration information, and will not be repeated here. When configuring the time domain position of the time-frequency resources in the above embodiment, the specific content of the second configuration information can be determined according to actual technical needs. For example, the number, length, time interval, and time domain mapping method of at least two signals of the time domain units can be flexibly configured according to actual technical needs, so as to be suitable for different perception measurement accuracy requirements. Especially when measuring speed and Doppler shift, the number and time interval of the time domain units will have a direct impact on the measurement accuracy and range of speed and Doppler shift. In this embodiment, by mapping the signal to different time domain positions of a set of time-frequency resources, the autocorrelation characteristics of the signal sequence on each subcarrier can be guaranteed.

[0282] 3.4 Frequency Domain Related Configuration

[0283] In some embodiments, the signal mapping of this embodiment adopts the time domain priority principle. In a group of time-frequency resources in a transmission opportunity or time window, a fixed frequency domain position is first mapped to different time domain positions. After the time domain position is full, the next frequency domain position is mapped.

[0284] In some embodiments, the frequency domain position corresponding to a group of time-frequency resources is configured by third configuration information.

[0285] In some embodiments, the third configuration information is used to configure at least one of the following information: frequency domain resource unit; frequency domain resource starting position; frequency domain resource range; frequency domain mapping method of at least two signals.

[0286] In some embodiments, the frequency domain resource unit includes at least one of the following: a subcarrier; a resource block; a resource element.

[0287] In some embodiments, the starting position of the frequency domain resource is represented by at least one of the following information: the index of the starting resource block; the index of the starting subcarrier occupied by the signal sequence in the starting resource block; the index of the starting resource element occupied by the signal sequence in the starting resource block.

[0288] In some embodiments, the starting resource block (RB0) refers to the resource block corresponding to the starting position of the frequency domain resources. A resource block includes multiple resource elements, and the starting resource element is the resource element corresponding to the starting position of the frequency domain resources in the starting resource block. The starting subcarrier is the subcarrier corresponding to the starting position of the frequency domain resources in the starting resource block.

[0289] In some embodiments, the frequency domain resource range is determined based on at least one of the following information: the number of subcarriers; the number of resource blocks; and the number of resource elements.

[0290] In some embodiments, the frequency domain mapping method includes at least one of the following: mapping on continuous frequency domain resource units; mapping on spaced frequency domain resource units.

[0291] It should be noted that the specific description of the frequency domain mapping method of at least two signals in the above embodiment can refer to the frequency domain mapping method of at least two signals in the first configuration information, and will not be repeated here. When configuring the frequency domain position of the time-frequency resources in the above embodiment, the number of subcarriers, resource blocks, and resource elements can be flexibly configured. When one subcarrier is configured for one signal, signal resource overhead can be saved. If multiple subcarriers or resource blocks are also configured in the frequency domain position, a measurement result can be obtained for the signal sequence corresponding to each subcarrier. By comprehensively using multiple measurement results, the perception measurement precision and accuracy can be improved.

[0292] It should be noted that the first configuration information, the second configuration information, and the third configuration information can be used independently or in combination. For example, the network device may be configured with only the first configuration information, or only the second configuration information, or only the third configuration information. Alternatively, the network device may be configured with both the first configuration information and the second configuration information, or both the first configuration information and the third configuration information, or both the second configuration information and the third configuration information, or both the first configuration information, the second configuration information, and the third configuration information.

[0293] 4. Multiple sets of time-frequency resources

[0294] In some embodiments, different groups of signals are sent in different groups of time-frequency resources, and each group of signals includes at least two signals.

[0295] In some embodiments, different groups of time-frequency resources correspond to the same time domain positions and different frequency domain positions, or different groups of time-frequency resources correspond to different time domain positions and the same frequency domain positions, or different groups of time-frequency resources correspond to different time domain positions and different frequency domain positions.

[0296] In some embodiments, each group of time-frequency resources in different groups of time-frequency resources may be continuous in the time domain, or may be spaced apart in the time domain. Alternatively, at least some of the time-frequency resources in different groups of time-frequency resources may be continuous in the time domain, while other groups of time-frequency resources may be spaced apart in the time domain. The spacing may include at least one of equal spacing and unequal spacing.

[0297] For example, taking two groups of time-frequency resources as an example, each group of time-frequency resources in the two groups of time-frequency resources is continuous in the time domain, or, both are intermittent in the time domain, or, one group of time-frequency resources is continuous in the time domain, and the other group of time-frequency resources is intermittent in the time domain.

[0298] In some embodiments, FIG22 shows a schematic diagram of different groups of time-frequency resources provided by an exemplary embodiment of the present application. The horizontal axis of FIG22 represents time (time domain), and the vertical axis represents frequency (frequency domain). The physical resource corresponding to one subcarrier (Subcarrier) in the frequency domain and one symbol (Symbol) in the time domain is called a resource element (RE). The physical resource corresponding to 12 consecutive subcarriers in the frequency domain and one time slot (slot) in the time domain is called a resource block (RB), and one time slot includes 7 symbols. Taking the different groups of time-frequency resources as two groups of time-frequency resources as an example, (1) in FIG22 shows a group of time-frequency resources 151 and a group of time-frequency resources 152, wherein the group of time-frequency resources 151 includes 7 time-domain continuous time-frequency resources, and the group of time-frequency resources 152 includes 7 time-domain continuous time-frequency resources. The time domain positions corresponding to the group of time-frequency resources 151 and the group of time-frequency resources 152 are the same, but the frequency domain positions are different. (2) in Figure 22 shows a group of time-frequency resources 153 and a group of time-frequency resources 154, wherein the group of time-frequency resources 153 includes 7 time-domain continuous time-frequency resources, and the group of time-frequency resources 154 includes 7 time-domain continuous time-frequency resources. The time domain positions corresponding to the group of time-frequency resources 153 and the group of time-frequency resources 154 are different, but the frequency domain positions are the same.

[0299] In some embodiments, FIG23 shows a schematic diagram of different groups of time-frequency resources provided by an exemplary embodiment of the present application. The horizontal axis of FIG23 represents time (time domain), and the vertical axis represents frequency (frequency domain). The physical resource corresponding to one subcarrier in the frequency domain and one symbol in the time domain is called a resource element (RE). The physical resource corresponding to 12 consecutive subcarriers in the frequency domain and one time slot in the time domain is called a resource block (RB), and one time slot includes 7 symbols. Taking the example that different groups of time-frequency resources include two groups of time-frequency resources, (1) in FIG23 shows a group of time-frequency resources 161 and a group of time-frequency resources 162, wherein the group of time-frequency resources 161 includes 7 time-domain continuous time-frequency resources, and the group of time-frequency resources 162 includes 4 time-domain equally spaced time-frequency resources with a time interval of 1. The time domain positions corresponding to the group of time-frequency resources 161 and the group of time-frequency resources 162 are the same, but the frequency domain positions are different. (2) in Figure 23 shows a group of time-frequency resources 163 and a group of time-frequency resources 164. The group of time-frequency resources 163 includes 7 continuous time-domain time-frequency resources, and the group of time-frequency resources 164 includes 4 equally spaced time-domain time-frequency resources with a time interval of 1. The time domain positions corresponding to the group of time-frequency resources 163 and the group of time-frequency resources 164 are different, but the frequency domain positions are the same.

[0300] 5. Initial Factor

[0301] In some embodiments, if different groups of signals are generated based on the same signal sequence, then the different groups of signals transmitted in different groups of time-frequency resources are signals corresponding to the same signal sequence. Alternatively, if different groups of signals are generated based on different signal sequences, then the different groups of signals transmitted in different groups of time-frequency resources are signals corresponding to different signal sequences.

[0302] In some embodiments, the initial factor is used to determine the signal sequence, wherein one initial factor corresponds to one signal sequence.

[0303] In some embodiments, the initial factor used to determine the signal sequence is determined based on at least one of the time domain position of a specified time-frequency resource in a group of time-frequency resources, the frequency domain position of a specified time-frequency resource in a group of time-frequency resources, and a node identifier; wherein the node identifier is used to identify a signal sending end device or to identify a signal receiving end device, and the signal receiving end device is used to receive at least two signals.

[0304] In some embodiments, the designated time-frequency resources include at least one of the following: the time-frequency resource with the earliest time domain position in a group of time-frequency resources; the time-frequency resource with a middle time domain position in a group of time-frequency resources; the time-frequency resource with the latest time domain position in a group of time-frequency resources; the time-frequency resource with the lowest frequency domain position in a group of time-frequency resources; the time-frequency resource with a middle frequency domain position in a group of time-frequency resources; and the time-frequency resource with the highest frequency domain position in a group of time-frequency resources.

[0305] In some embodiments, the designated time-frequency resource is the time-frequency resource with the earliest time-domain position in a group of time-frequency resources. The time-frequency resource with the earliest time-domain position may also be the time-frequency resource occupied by the first signal corresponding to the signal sequence. For example, as shown in (1) in FIG6 , the time-frequency resource with the earliest time-domain position in a group of time-frequency resources 141 is the time-frequency resource occupied by signal 1 (s1). The designated time-frequency resource is the time-frequency resource with the latest time-domain position in a group of time-frequency resources. The time-frequency resource with the latest time-domain position may also be the time-frequency resource occupied by the last signal corresponding to the signal sequence. For example, as shown in (1) in FIG6 , the time-frequency resource with the latest time-domain position in a group of time-frequency resources 141 is the time-frequency resource occupied by signal 7 (s7). The designated time-frequency resource is the time-frequency resource with the middle time-domain position in a group of time-frequency resources, or it may be any time-frequency resource in a group of time-frequency resources except the time-frequency resource with the earliest time-domain position and the time-frequency resource with the latest time-domain position, or it may be any time-frequency resource except the time-frequency resources occupied by the first signal and the last signal respectively. For example, as shown in (1) in Figure 6, the time-frequency resource in the center of the time domain position in a group of time-frequency resources 141 is the time-frequency resource occupied by signal 2 (s2), signal 3 (s3), signal 4 (s4), signal 5 (s5) or signal 6 (s6).

[0306] In some embodiments, the designated time-frequency resource is the time-frequency resource with the lowest frequency domain position in a group of time-frequency resources. For example, as shown in (2) in Figure 18, the time-frequency resource with the lowest frequency domain position in a group of time-frequency resources 155 is the time-frequency resource occupied by signal 8 (s8) or signal 9 (s9) or signal 10 (s10) or signal 11 (s11) or signal 12 (s12) or signal 13 (s13) or signal 14 (s14). The designated time-frequency resource is the time-frequency resource with the highest frequency domain position in a group of time-frequency resources. For example, as shown in (2) in Figure 18, the time-frequency resource with the highest frequency domain position in a group of time-frequency resources 155 is the time-frequency resource occupied by signal 1 (s1) or signal 2 (s2) or signal 3 (s3) or signal 4 (s4) or signal 5 (s5) or signal 6 (s6) or signal 7 (s7). The designated time-frequency resource is a time-frequency resource with a central frequency domain position in a group of time-frequency resources, or may be any time-frequency resource in a group of time-frequency resources except the time-frequency resource with the lowest frequency domain position and the time-frequency resource with the highest frequency domain position.

[0307] In some embodiments, the time domain position of the specified time-frequency resource is represented by at least one of the following indexes: the index of the time slot where the specified time-frequency resource is located; the index of the frame where the specified time-frequency resource is located; the index of the sub-frame where the specified time-frequency resource is located; the index of the starting symbol of the time slot; the index of the symbol of the specified time-frequency resource in the time slot.

[0308] In some embodiments, the index of the starting symbol of the time slot of the specified time-frequency resource may be 0.

[0309] In some embodiments, the frequency domain position of the specified time-frequency resource is represented by at least one of the following indexes: the index of the subcarrier where the specified time-frequency resource is located; the index of the resource block where the specified time-frequency resource is located; the index of the bandwidth part (Bandwidth Part, BWP) where the specified time-frequency resource is located; the index of the carrier (Carrier) where the specified time-frequency resource is located.

[0310] In some embodiments, the index may be replaced by at least one of the following: a sequence number, an identifier, or a character.

[0311] In some embodiments, the initial factor used to determine the signal sequence is determined based on the time domain position of a specified time-frequency resource in a group of time-frequency resources. This embodiment is applicable to situations where a group of time-frequency resources exists within the same transmission opportunity or time window, and the group of time-frequency resources transmits at least two signals corresponding to the same signal sequence.

[0312] In some embodiments, an initial factor for determining a signal sequence is determined based on the time domain location and node identifier of a specified time-frequency resource within a group of time-frequency resources; the node identifier is used to identify a signal transmitting device or a signal receiving device, and the signal receiving device is used to receive at least two signals. This embodiment is applicable to situations where a group of time-frequency resources exists within the same transmission opportunity or time window, and the group of time-frequency resources transmits at least two signals corresponding to the same signal sequence, and the specific node type also needs to be determined.

[0313] In some embodiments, the initial factor used to generate the signal sequence is determined based on the node identifier TX_id of the signal transmitting device and the time domain position (n_slot, l) of the time-frequency resource occupied by the first signal corresponding to the signal sequence. The calculation expression is:

[0314] Among them, A and B are agreed constants (integers greater than 0), is the number of symbols in a time slot, n_slot is the time slot index within the radio frame where the first signal is located, l is the symbol index where the first signal is located, and TX_id is the node identifier of the signal transmitting end device. It should be noted that the above calculation expression is only used as an example. When determining the initial factor, as long as the time domain location of the specified time-frequency resource and the node identifier of the signal transmitting end device are used as inputs of the calculation expression, and the functions implemented by the calculation expression are the same or similar, they are all within the scope of protection of this embodiment.

[0315] In some embodiments, the initial factor used to generate the signal sequence is determined based on the node identifier RX_id of the signal receiving device and the time domain position (n_slot, l) of the time-frequency resource occupied by the first signal corresponding to the signal sequence. The calculation expression is:

[0316] Among them, A and B are agreed constants (integers greater than 0), is the number of symbols in a time slot, n_slot is the time slot index within the radio frame where the first signal is located, l is the symbol index where the first signal is located, and RX_id is the node identifier of the signal receiving device. It should be noted that the above calculation expression is only used as an example. When determining the initial factor, as long as the time domain location of the specified time-frequency resource and the node identifier of the signal receiving device are used as inputs to the calculation expression, and the functions implemented by the calculation expression are the same or similar, they are all within the scope of protection of this embodiment.

[0317] In some embodiments, in the two calculation methods described above, l can be determined based on the actual symbol position of the signal, or l = 0 can be directly used. n_slot can be the index of the time slot where the actual symbol is located, or the index of the first time slot in the time window, or the index of the first time slot in the transmission opportunity, or the index of the first time slot in the cycle.

[0318] In some embodiments, the initial factor used to determine the signal sequence is determined based on the time domain position of a specified time-frequency resource in a group of time-frequency resources and the frequency domain position of a specified time-frequency resource in a group of time-frequency resources.

[0319] This embodiment is applicable to the case where different groups of time-frequency resources exist in the same transmission opportunity or time window, and at least two signals corresponding to different signal sequences are sent on different groups of time-frequency resources. For example, as shown in (1) in FIG22 , there are a group of time-frequency resources 151 and a group of time-frequency resources 152 in the same transmission opportunity or time window. Since at least two signals are sent on different groups of time-frequency resources, at least two signals are generated based on different signal sequences. In (1) in FIG22 , since the time domain positions of the group of time-frequency resources 151 and the group of time-frequency resources 152 are the same, determining the initial factors corresponding to the at least two signals based only on the time domain position of the specified time-frequency resource in the group of time-frequency resources will make the two calculated initial factors completely identical. When the at least two signals are generated based on different signal sequences, the two signal sequences cannot be distinguished. Therefore, this embodiment needs to determine the initial factors corresponding to the at least two signals based on the time domain position of the specified time-frequency resource in the group of time-frequency resources and the frequency domain position of the specified time-frequency resource in the group of time-frequency resources. This enables at least two signals corresponding to different signal sequences to be sent on different groups of time-frequency resources.

[0320] This embodiment is also applicable to the case where different groups of time-frequency resources exist in the same transmission opportunity or time window, and at least two signals corresponding to the same signal sequence are sent on different groups of time-frequency resources. For example, as shown in (1) in FIG22 , there are a group of time-frequency resources 151 and a group of time-frequency resources 152 in the same transmission opportunity or time window. Since at least two signals are sent on different groups of time-frequency resources, at least two signals are generated based on the same signal sequence. In (1) in FIG22 , since the time domain positions of the group of time-frequency resources 151 and the group of time-frequency resources 152 are the same but the frequency domain positions are different, if the frequency domain position of the specified time-frequency resource is not used, two initial factors will be calculated, and the two initial factors correspond to two signal sequences. Therefore, this embodiment needs to determine the initial factors corresponding to the at least two signals based on the time domain position of the specified time-frequency resource in the group of time-frequency resources and the frequency domain position of the specified time-frequency resource in the group of time-frequency resources. This achieves the transmission of at least two signals corresponding to the same signal sequence on different groups of time-frequency resources.

[0321] This embodiment is also applicable to the case where a group of time-frequency resources corresponds to at least one frequency domain position within the same transmission opportunity or time window. Among them, when a group of time-frequency resources corresponds to only one frequency domain position, by introducing the frequency domain position of the designated time-frequency resource in a group of time-frequency resources, the signal sequences sent by different groups of time-frequency resources can be orthogonal, ensuring the autocorrelation characteristics of the signal sequences sent by different groups of time-frequency resources. When a group of time-frequency resources corresponds to at least two frequency domain positions, for example, as shown in (2) in Figure 22, a group of time-frequency resources 155 corresponds to two frequency domain positions within the same transmission opportunity or time window. Since at least two signals are sent on the group of time-frequency resources 155, at least two signals are generated based on the same signal sequence, and a group of time-frequency resources 155 corresponds to two frequency domain positions, if the frequency domain position of the designated time-frequency resource is not used, two initial factors may be determined, and the two initial factors correspond to two signal sequences. Therefore, this embodiment needs to determine the initial factors corresponding to at least two signals based on the time domain position of the designated time-frequency resource in a group of time-frequency resources and the frequency domain position of the designated time-frequency resource in a group of time-frequency resources. This ensures that the signal sequence sent on a set of time-frequency resources is unique.

[0322] In some embodiments, the initial factor used to determine the signal sequence is determined based on the time domain position of a specified time-frequency resource in a group of time-frequency resources, the frequency domain position of a specified time-frequency resource in a group of time-frequency resources, and a node identifier.

[0323] In some embodiments, the initial factor used to generate the signal sequence is determined based on the node identifier TX_id of the signal transmitting device, the time domain position (n_slot, l) and the frequency domain position of the time-frequency resource occupied by the first signal corresponding to the signal sequence. The calculation expression is:

[0324] Among them, A and B are agreed constants (integers greater than 0), is the number of symbols in 1 time slot, n_slot is the time slot index in the wireless frame where the first signal is located, l is the symbol index where the first signal is located, k is the index of the subcarrier where the first signal is located, and TX_id is the node identifier of the signal transmitting end device. It should be noted that the above calculation expression is only used as an example. When determining the initial factor, as long as the time domain position of the specified time-frequency resource, the frequency domain position of the specified time-frequency resource, and the node identifier of the signal transmitting end device are used as inputs of the calculation expression, and the functions implemented by the calculation expression are the same or similar, they are all within the protection scope of this embodiment.

[0325] In some embodiments, the initial factor used to generate the signal sequence is determined based on the node identifier RX_id of the signal receiving device, the time domain position (n_slot, l) and the frequency domain position of the time-frequency resource occupied by the first signal corresponding to the signal sequence. The calculation expression is:

[0326] Among them, A and B are agreed constants (integers greater than 0), is the number of symbols in 1 time slot, n_slot is the time slot index in the wireless frame where the first signal is located, l is the symbol index where the first signal is located, k is the index of the subcarrier where the first signal is located, and RX_id is the node identifier of the signal receiving device. It should be noted that the above calculation expression is only used as an example. When determining the initial factor, as long as the time domain position of the specified time-frequency resource, the frequency domain position of the specified time-frequency resource, and the node identifier of the signal receiving device are used as inputs of the calculation expression, and the functions implemented by the calculation expression are the same or similar, they are all within the protection scope of this embodiment.

[0327] In some embodiments, in the two aforementioned calculation methods, l can be determined using the actual symbol position of the signal, or l = 0 can be used directly, depending on the configuration. n_slot can be the index of the timeslot where the actual symbol is located, or the index of the first timeslot within the time window, or the index of the first timeslot within the transmission opportunity, or the index of the first timeslot within the cycle. k is the index of the subcarrier where the first signal is located, or the index of the resource block, or the index of the bandwidth portion, or the index of the carrier.

[0328] This embodiment is applicable to situations where different groups of time-frequency resources exist in the same transmission opportunity or time window, at least two signals sent by different groups of time-frequency resources are generated based on the same signal sequence, or based on different signal sequences, and the specific node type needs to be determined, wherein the node type can be determined by the node identifier as whether it is a signal sending end device or a signal receiving end device.

[0329] FIG24 shows a block diagram of a signal transmission device provided by an exemplary embodiment of the present application, which can be implemented as a signal transmission end device or as a part of a signal transmission end device. The device includes all or part of a transmission module 410, a reception module 420, and a processing module 430.

[0330] The sending module 410 is used to send at least two signals, where the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein the at least two signals are generated based on the same signal sequence.

[0331] In summary, the transmitting module 410 in the embodiment of the present application is used to transmit at least two signals, wherein the at least two signals occupy at least two time-frequency resources in a set of time-frequency resources, the at least two time-frequency resources correspond to different time-domain locations, and the at least two signals are generated based on the same signal sequence. Because the signals corresponding to the same signal sequence have autocorrelation characteristics, the autocorrelation characteristics of the at least two signals transmitted on different time-frequency resources can be ensured, thereby improving perception performance and facilitating perception measurement and perception target detection.

[0332] During the perception process, the signals used for measurement or detection are mostly reflected signals. Due to the influence of the signal transmission environment, the reflected signals of signals sent in different time windows or different transmission opportunities may overlap in time. In this case, the autocorrelation characteristics of the signal sequence can be used to distinguish the received signal sequence, making the communication system applicable to complex transmission environments.

[0333] In some embodiments, the sending module 410 is also used to send different groups of signals in different groups of time-frequency resources, and each group of signals includes at least two signals; wherein, the time domain positions corresponding to different groups of time-frequency resources are the same and the frequency domain positions are different, or, the time domain positions corresponding to different groups of time-frequency resources are different and the frequency domain positions are the same, or, the time domain positions corresponding to different groups of time-frequency resources are different and the frequency domain positions are different; the signals of different groups are generated based on the same signal sequence, or, the signals of different groups are generated based on different signal sequences.

[0334] In summary, the sending module 410 in the embodiment of the present application is used to send different groups of signals in different groups of time-frequency resources, each group of signals includes at least two signals, and the signals of different groups are generated based on the same signal sequence, or the signals of different groups are generated based on different signal sequences. Among them, when the signals of different groups are generated based on the same signal sequence, the autocorrelation characteristics of the signals of different groups can be guaranteed, the perception performance is improved, and it is beneficial to perception measurement and perception target detection; when the signals of different groups are generated based on different signal sequences, it is possible to send signals corresponding to different signal sequences, thereby improving signal transmission efficiency.

[0335] In some embodiments, the apparatus may further optionally include a receiving module 420 configured to receive at least one of the following configuration information: first configuration information; second configuration information; and third configuration information. The first configuration information is used for transmission opportunity and / or time window configuration, the second configuration information is used for time domain resource configuration of a group of time-frequency resources, and the third configuration information is used for frequency domain resource configuration of a group of time-frequency resources.

[0336] To summarize, the receiving module 420 in the embodiment of the present application is used to send at least two signals at different time domain positions corresponding to a set of time-frequency resources based on at least one of the first configuration information, the second configuration information, and the third configuration information. Since at least two signals are generated based on the same signal sequence, the autocorrelation characteristics of at least two signals can be guaranteed, thereby improving the perception performance and facilitating perception measurement and perception target detection.

[0337] In some embodiments, the sending module 410 may include one or more modules configured to simultaneously or separately perform the sending step, and the receiving module 420 may include one or more modules configured to simultaneously or separately perform the receiving step. The apparatus may also optionally include a processing module 430, which may include one or more modules configured to cooperate with the sending module 410 or the receiving module 420 to perform corresponding processing.

[0338] It should be noted that the signal sending device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. Regarding the signal sending device in this embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the relevant signal sending method. For details, please refer to the above sections: "1. Signal; 2. Signal sequence; 3. A group of time-frequency resources; 4. Multiple groups of time-frequency resources; 5. Initial factors". The relevant records will not be elaborated here.

[0339] FIG25 shows a block diagram of a signal receiving device provided by an exemplary embodiment of the present application. The signal sending device can be implemented as a signal receiving end device, or implemented as a part of a signal receiving end device. The device includes all or part of a receiving module 510, a sending module 520, and a processing module 530.

[0340] The receiving module 510 is used to receive at least two signals, where the at least two signals occupy at least two time-frequency resources in a group of time-frequency resources, and the time domain positions corresponding to the at least two time-frequency resources are different; wherein the at least two signals are generated based on the same signal sequence.

[0341] In summary, the receiving module 510 in the embodiment of the present application is used to receive at least two signals, where the at least two signals occupy at least two time-frequency resources in a set of time-frequency resources, the at least two time-frequency resources correspond to different time-domain locations, and the at least two signals are generated based on the same signal sequence. Because the signals corresponding to the same signal sequence have autocorrelation characteristics, the autocorrelation characteristics of the at least two signals transmitted on different time-frequency resources can be ensured, thereby improving perception performance and facilitating perception measurement and perception target detection.

[0342] During the perception process, the signals used for measurement or detection are mostly reflected signals. Due to the influence of the signal transmission environment, the reflected signals of signals received in different time windows or different transmission opportunities may overlap in time. In this case, the autocorrelation characteristics of the signal sequence can be used to distinguish the received signal sequence, making the communication system applicable to complex transmission environments.

[0343] In some embodiments, the receiving module 510 is further used to receive different groups of signals in different groups of time-frequency resources, each group of signals including at least two signals; wherein the time domain positions corresponding to different groups of time-frequency resources are the same and the frequency domain positions are different, or the time domain positions corresponding to different groups of time-frequency resources are different and the frequency domain positions are the same, or the time domain positions corresponding to different groups of time-frequency resources are different and the frequency domain positions are different; the signals of different groups are generated based on the same signal sequence, or the signals of different groups are generated based on different signal sequences.

[0344] In summary, the receiving module 510 in the embodiment of the present application is used to receive different groups of signals in different groups of time-frequency resources, each group of signals includes at least two signals, and the signals of different groups are generated based on the same signal sequence, or the signals of different groups are generated based on different signal sequences. Among them, when the signals of different groups are generated based on the same signal sequence, the autocorrelation characteristics of the signals of different groups can be guaranteed, the perception performance is improved, and it is beneficial to perception measurement and perception target detection; when the signals of different groups are generated based on different signal sequences, it is possible to receive signals corresponding to different signal sequences, thereby improving signal reception efficiency.

[0345] In some embodiments, the receiving module 510 is further configured to receive at least one of the following configuration information: first configuration information; second configuration information; and third configuration information. Alternatively, the apparatus may further optionally include a sending module 520 configured to send at least one of the following configuration information: first configuration information; second configuration information; and third configuration information. The first configuration information is used to configure transmission opportunities and / or time windows, the second configuration information is used to configure time-domain resources for a group of time-frequency resources, and the third configuration information is used to configure frequency-domain resources for a group of time-frequency resources.

[0346] To summarize, the receiving module 510 or the sending module 520 in the embodiment of the present application is used to receive at least two signals at different time domain positions corresponding to a set of time-frequency resources based on at least one of the first configuration information, the second configuration information, and the third configuration information. Since at least two signals are generated based on the same signal sequence, the autocorrelation characteristics of at least two signals can be guaranteed, thereby improving the perception performance and facilitating perception measurement and perception target detection.

[0347] In some embodiments, the receiving module 510 may include one or more modules configured to simultaneously or separately perform the receiving step, and the sending module 520 may include one or more modules configured to simultaneously or separately perform the receiving step. The apparatus may also optionally include a processing module 530, which may include one or more modules configured to cooperate with the receiving module 510 or the sending module 520 to perform corresponding processing.

[0348] It should be noted that the signal receiving device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. Regarding the signal receiving device in this embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment of the relevant signal receiving method. For details, please refer to the above section: "1. Signal; 2. Signal sequence; 3. A group of time-frequency resources; 4. Multiple groups of time-frequency resources; 5. Initial factors". The relevant records will not be elaborated here.

[0349] FIG26 shows a structural block diagram of a communication device provided by some exemplary embodiments of the present application. The communication device 600 includes: a processor 601 , a receiver 602 , a transmitter 603 , a memory 604 and a bus 605 .

[0350] In some embodiments, the communication device 600 may be implemented as a terminal device, a signal transmitting terminal device, or a portion thereof, or a signal receiving terminal device, or a portion thereof.

[0351] In some embodiments, the communication device 600 may be implemented as a network device, a signal transmitting device, or a portion of a signal transmitting device, or a signal receiving device, or a portion of a signal receiving device.

[0352] Processor 601 includes one or more processing cores. Processor 601 executes various functional applications and information processing by running software programs and modules. In some embodiments, processor 601 can be used to cooperate with the aforementioned transmitting module 410, receiving module 420, receiving module 510, and transmitting module 520 to implement corresponding functions and execute corresponding steps. Receiver 602 and transmitter 603 can be implemented as a communication component, which can be a communication chip.

[0353] In some embodiments, the receiver 602 may be configured to implement the functions and steps of the aforementioned receiving module 420 or receiving module 510. The transmitter 603 may be configured to implement the functions and steps of the aforementioned sending module 410 or sending module 520. The memory 604 is connected to the processor 601 via a bus 605. The memory 604 may be configured to store at least one instruction, and the processor 601 may be configured to execute the at least one instruction to implement the functions and steps of the aforementioned processing module 430 or processing module 530. In addition, the memory 604 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Volatile or non-volatile storage devices include but are not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random-access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

[0354] In some embodiments, the receiver 602 independently receives signals / data, or the processor 601 controls the receiver 602 to receive signals / data, or the processor 601 requests the receiver 602 to receive signals / data, or the processor 601 cooperates with the receiver 602 to receive signals / data. In some embodiments, the transmitter 603 independently transmits signals / data, or the processor 601 controls the transmitter 603 to transmit signals / data, or the processor 601 requests the transmitter 603 to transmit signals / data, or the processor 601 cooperates with the transmitter 603 to transmit signals / data.

[0355] In some embodiments, a computer-readable storage medium is also provided, in which at least one program is stored. The at least one program is loaded and executed by a processor to implement the signal sending method and / or signal receiving method provided by the above-mentioned method embodiments.

[0356] In some embodiments, a chip is also provided, which includes a programmable logic circuit and / or program instructions. When the chip runs on a communication device, it is used to implement the signal sending method and / or signal receiving method provided by the above-mentioned various method embodiments.

[0357] In some embodiments, a computer program product is further provided. When the computer program product is executed on a processor of a computer device, the computer device executes the above-mentioned signal sending method and / or signal receiving method.

[0358] In some embodiments, a computer program is further provided. The computer program includes computer instructions. The processor of a computer device executes the computer instructions, so that the computer device executes the above-mentioned signal sending method and / or signal receiving method.

[0359] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. Storage media is any available medium that can be accessed by a general-purpose or special-purpose computer.

[0360] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A signal sending method, characterized in that, applied to a signal sending end device, the method includes: sending at least two signals, the at least two signals occupying at least two time-frequency resources in a group of time-frequency resources, and the time-domain positions corresponding to the at least two time-frequency resources being different; wherein, the at least two signals are generated based on the same signal sequence.

2. The method according to claim 1, characterized in that, the method further includes: sending different groups of signals in different groups of time-frequency resources, each group of signals including at least two signals; wherein, the time-domain positions corresponding to the different groups of time-frequency resources are the same and the frequency-domain positions are different, or, the time-domain positions corresponding to the different groups of time-frequency resources are different and the frequency-domain positions are the same, or, the time-domain positions corresponding to the different groups of time-frequency resources are different and the frequency-domain positions are different; the different groups of signals are generated based on the same signal sequence, or, the different groups of signals are generated based on different signal sequences.

3. The method according to claim 1 or 2, characterized in that, used to determine an initial factor of the signal sequence, determined based on at least one of the time-domain position of a specified time-frequency resource in the group of time-frequency resources, the frequency-domain position of the specified time-frequency resource in the group of time-frequency resources, and the node identifier; wherein, the node identifier is used to identify the signal sending end device or is used to identify a signal receiving end device, and the signal receiving end device is used to receive the at least two signals.

4. The method according to claim 3, characterized in that, the specified time-frequency resource includes at least one of the following: the time-frequency resource with the earliest time-domain position in the group of time-frequency resources; the time-frequency resource with the middle time-domain position in the group of time-frequency resources; the time-frequency resource with the latest time-domain position in the group of time-frequency resources; the time-frequency resource with the lowest frequency-domain position in the group of time-frequency resources; the time-frequency resource with the middle frequency-domain position in the group of time-frequency resources; the time-frequency resource with the highest frequency-domain position in the group of time-frequency resources.

5. The method according to claim 3, characterized in that, the time-domain position of the specified time-frequency resource is characterized by at least one of the following indexes: the index of the time slot where the specified time-frequency resource is located; the index of the frame where the specified time-frequency resource is located; the index of the sub-frame where the specified time-frequency resource is located; the index of the start symbol of the time slot; the index of the symbol of the specified time-frequency resource in the time slot.

6. The method according to claim 3, characterized in that, the frequency-domain position of the specified time-frequency resource is characterized by at least one of the following indexes: the index of the sub-carrier where the specified time-frequency resource is located; the index of the resource block where the specified time-frequency resource is located; the index of the bandwidth part where the specified time-frequency resource is located; the index of the carrier where the specified time-frequency resource is located.

7. The method according to any one of claims 1 to 6, characterized in that, the group of time-frequency resources are time-frequency resources within the same transmission opportunity; or, the group of time-frequency resources are time-frequency resources within the same time window.

8. The method according to claim 7, characterized in that, the transmission opportunity or the time window is periodic; or, the transmission opportunity or the time window is signaling-triggered.

9. The method according to claim 7 or 8, characterized in that, the transmission opportunity or the time window is configured by first configuration information.

10. The method according to claim 9, characterized in that, the first configuration information is used to configure at least one of the following information: the length of the transmission opportunity or the time window; the period of the transmission opportunity or the time window; the time window start offset; the starting position of signal transmission within the transmission opportunity or the time window; the time domain mapping manner of the at least two signals; the frequency domain mapping manner of the at least two signals.

11. The method according to claim 10, characterized in that, the length of the transmission opportunity or the time window is related to at least one of the following information: the number of signals corresponding to the signal sequence; the transmission time length of the signal sequence; the time interval between the start time of the first signal corresponding to the signal sequence and the start time of the last signal; the time interval between the start time of the first signal corresponding to the signal sequence and the end time of the last signal; the length of the time domain unit for mapping the signal sequence; the number of time domain units for mapping the signal sequence; the time interval between the time domain units for mapping the signal sequence; wherein, each of the time domain units is used to map at least one signal.

12. The method according to claim 10, characterized in that, the period of the transmission opportunity or the time window is related to at least one of the following information: the transmission period of the signal sequence; the time interval between the start time of the i-th signal sequence and the start time of the (i + 1)-th signal sequence, where i is greater than or equal to 0.

13. The method according to any one of claims 1 to 12, characterized in that, the time domain position corresponding to the set of time-frequency resources is configured by second configuration information.

14. The method according to claim 13, characterized in that, the second configuration information is used to configure at least one of the following information: the number of time domain units corresponding to the set of time-frequency resources; the length of the time domain units corresponding to the set of time-frequency resources; the time interval between the time domain units corresponding to the set of time-frequency resources; the time domain mapping manner of the at least two signals; wherein, each of the time domain units is used to map at least one signal.

15. The method according to claim 14, characterized in that, the number of time domain units corresponding to the set of time-frequency resources is related to at least one of the following information: the length of the signal sequence; the number of signals corresponding to the signal sequence.

16. The method according to any one of claims 11 to 15, characterized in that, the time domain unit is at least one of a first time domain unit and a second time domain unit, each of the second time domain units includes at least two first time domain units, and each of the first time domain units is used to map one signal.

17. The method according to any one of claims 10 to 16, characterized in that, the time domain mapping manner includes at least one of the following: Map in at least two consecutive first time domain units; map within at least two consecutive second time domain units; map in at least two non - consecutive first time domain units; map within at least two non - consecutive second time domain units; map within one second time domain unit.

18. The method according to claim 17, wherein, the mapping within at least two non - consecutive second time domain units includes at least one of the following: map the at least two consecutive first time domain units within any one of the non - consecutive second time domain units; map the at least two non - consecutive first time domain units within any one of the non - consecutive second time domain units.

19. The method according to any one of claims 1 to 18, wherein, the set of time - frequency resources is continuous in the time domain or non - consecutive in the time domain.

20. The method according to claim 19, wherein, the set of time - frequency resources is non - consecutive in the time domain, and the time interval corresponding to the set of time - frequency resources is related to at least one of the following information: the time interval between adjacent signals in the at least two signals; the time interval between the start time of the transmission of the j - th signal and the start time of the transmission of the (j + 1) - th signal in the at least two signals; j is greater than or equal to 0.

21. The method according to any one of claims 1 to 20, wherein, the frequency - domain position corresponding to the set of time - frequency resources is configured by third configuration information.

22. The method according to claim 21, wherein, the third configuration information is used to configure at least one of the following information: frequency - domain resource units; frequency - domain resource start position; frequency - domain resource range; the frequency - domain mapping manner of the at least two signals.

23. The method according to claim 22, wherein, the frequency - domain resource units include at least one of the following: sub - carriers; resource blocks; resource elements.

24. The method according to claim 22, wherein, the frequency - domain resource start position is characterized by at least one of the following information: the index of the starting resource block; the index of the starting sub - carrier occupied by the signal sequence in the starting resource block; the index of the starting resource element occupied by the signal sequence in the starting resource block.

25. The method according to claim 22, wherein, the frequency - domain resource range is determined based on at least one of the following information: the number of sub - carriers; the number of resource blocks; the number of resource elements.

26. The method according to claim 10 or 22, wherein, the frequency - domain mapping manner includes at least one of the following: map in consecutive frequency - domain resource units; map in non - consecutive frequency - domain resource units.

27. A signal receiving method, wherein, applied to a signal receiving end device, the method includes: receive at least two signals, the at least two signals occupy at least two time - frequency resources in a set of time - frequency resources, and the time - domain positions corresponding to the at least two time - frequency resources are different; wherein, the at least two signals are generated based on the same signal sequence.

28. The method according to claim 27, wherein, the method further includes: Receiving signals of different groups in different groups of time-frequency resources, where each group of signals includes at least two signals; wherein, the time-domain positions corresponding to the different groups of time-frequency resources are the same and the frequency-domain positions are different, or, the time-domain positions corresponding to the different groups of time-frequency resources are different and the frequency-domain positions are the same, or, the time-domain positions corresponding to the different groups of time-frequency resources are different and the frequency-domain positions are different; the signals of different groups are generated based on the same signal sequence, or, the signals of different groups are generated based on different signal sequences.

29. The method according to claim 27 or 28, characterized in that, used to determine an initial factor of the signal sequence, determined based on at least one of a time-domain position of a specified time-frequency resource in the group of time-frequency resources, a frequency-domain position of the specified time-frequency resource in the group of time-frequency resources, and a node identifier; wherein, the node identifier is used to identify a signal transmitting end device or is used to identify the signal receiving end device, and the signal transmitting end device is used to transmit the at least two signals.

30. The method according to claim 29, characterized in that, the specified time-frequency resource includes at least one of the following: the time-frequency resource with the earliest time-domain position in the group of time-frequency resources; the time-frequency resource with the middle time-domain position in the group of time-frequency resources; the time-frequency resource with the latest time-domain position in the group of time-frequency resources; the time-frequency resource with the lowest frequency-domain position in the group of time-frequency resources; the time-frequency resource with the middle frequency-domain position in the group of time-frequency resources; the time-frequency resource with the highest frequency-domain position in the group of time-frequency resources.

31. The method according to claim 29, characterized in that, the time-domain position of the specified time-frequency resource is characterized by at least one of the following indexes: the index of the time slot where the specified time-frequency resource is located; the index of the frame where the specified time-frequency resource is located; the index of the sub-frame where the specified time-frequency resource is located; the index of the starting symbol of the time slot; the index of the symbol of the specified time-frequency resource in the time slot.

32. The method according to claim 29, characterized in that, the frequency-domain position of the specified time-frequency resource is characterized by at least one of the following indexes: the index of the sub-carrier where the specified time-frequency resource is located; the index of the resource block where the specified time-frequency resource is located; the index of the bandwidth part where the specified time-frequency resource is located; the index of the carrier where the specified time-frequency resource is located.

33. The method according to any one of claims 27 to 32, characterized in that, the group of time-frequency resources are time-frequency resources within the same transmission opportunity; or, the group of time-frequency resources are time-frequency resources within the same time window.

34. The method according to claim 33, characterized in that, the transmission opportunity or the time window is periodic; or, the transmission opportunity or the time window is signaling-triggered.

35. The method according to claim 33 or 34, characterized in that, the transmission opportunity or the time window is configured by first configuration information.

36. The method according to claim 35, characterized in that, the first configuration information is used to configure at least one of the following information: The length of the transmission opportunity or the time window; the period of the transmission opportunity or the time window; the time window start offset; the starting position of signal transmission within the transmission opportunity or the time window; the time-domain mapping method of the at least two signals; the frequency-domain mapping method of the at least two signals.

37. The method according to claim 36, wherein, the length of the transmission opportunity or the time window is related to at least one of the following pieces of information: the number of signals corresponding to the signal sequence; the transmission time length of the signal sequence; the time interval between the start time of the first signal and the start time of the last signal corresponding to the signal sequence; the time interval between the start time of the first signal and the end time of the last signal corresponding to the signal sequence; the length of the time-domain unit used to map the signal sequence; the number of time-domain units used to map the signal sequence; the time interval between the time-domain units used to map the signal sequence; wherein each of the time-domain units is used to map at least one signal.

38. The method according to claim 36, wherein, the period of the transmission opportunity or the time window is related to at least one of the following pieces of information: the transmission period of the signal sequence; the time interval between the start time of the i-th signal sequence and the start time of the (i + 1)-th signal sequence, where i is greater than or equal to 0.

39. The method according to any one of claims 27 to 38, wherein, the time-domain position corresponding to the set of time-frequency resources is configured by second configuration information.

40. The method according to claim 39, wherein, the second configuration information is used to configure at least one of the following pieces of information: the number of time-domain units corresponding to the set of time-frequency resources; the length of the time-domain units corresponding to the set of time-frequency resources; the time interval between the time-domain units corresponding to the set of time-frequency resources; the time-domain mapping method of the at least two signals; wherein each of the time-domain units is used to map at least one signal.

41. The method according to claim 40, wherein, the number of time-domain units corresponding to the set of time-frequency resources is related to at least one of the following pieces of information: the length of the signal sequence; the number of signals corresponding to the signal sequence.

42. The method according to any one of claims 37 to 41, wherein, the time-domain unit is at least one of a first time-domain unit and a second time-domain unit, each of the second time-domain units includes at least two first time-domain units, and each of the first time-domain units is used to map one signal.

43. The method according to any one of claims 36 to 42, wherein, the time-domain mapping method includes at least one of the following: mapping on at least two consecutive first time-domain units; mapping within at least two consecutive second time-domain units; mapping on at least two non-consecutive first time-domain units; mapping within at least two non-consecutive second time-domain units; mapping within one second time-domain unit.

44. The method according to claim 43, wherein, the mapping within at least two non-consecutive second time-domain units includes at least one of the following: Mapping is performed on at least two consecutive first time-domain units within any second time-domain unit of the interval; mapping is performed on at least two non-consecutive first time-domain units within any second time-domain unit of the interval.

45. The method according to any one of claims 27 to 44, wherein, the set of time-frequency resources is continuous in the time domain or non-continuous in the time domain.

46. The method according to claim 45, wherein, the set of time-frequency resources is non-continuous in the time domain, and the time interval corresponding to the set of time-frequency resources is related to at least one of the following pieces of information: the time interval between adjacent signals among the at least two signals; the time interval between the start time of transmission of the j-th signal and the start time of transmission of the (j + 1)-th signal among the at least two signals; j is greater than or equal to 0.

47. The method according to any one of claims 27 to 46, wherein, the frequency-domain position corresponding to the set of time-frequency resources is configured by third configuration information.

48. The method according to claim 47, wherein, the third configuration information is used to configure at least one of the following pieces of information: frequency-domain resource units; frequency-domain resource start position; frequency-domain resource range; frequency-domain mapping manner of the at least two signals.

49. The method according to claim 48, wherein, the frequency-domain resource units include at least one of the following: subcarriers; resource blocks; resource elements.

50. The method according to claim 48, wherein, the frequency-domain resource start position is characterized by at least one of the following pieces of information: index of the starting resource block; index of the starting subcarrier occupied by the signal sequence in the starting resource block; index of the starting resource element occupied by the signal sequence in the starting resource block.

51. The method according to claim 48, wherein, the frequency-domain resource range is determined based on at least one of the following pieces of information: number of subcarriers; number of resource blocks; number of resource elements.

52. The method according to claim 36 or 48, wherein, the frequency-domain mapping manner includes at least one of the following: mapping on continuous frequency-domain resource units; mapping on non-continuous frequency-domain resource units.

53. A signal transmission device, wherein, the device includes: a transmission module, configured to transmit at least two signals, where the at least two signals occupy at least two time-frequency resources in a set of time-frequency resources, and the time-frequency positions corresponding to the at least two time-frequency resources are different; wherein, the at least two signals are generated based on the same signal sequence.

54. A signal reception device, wherein, the device includes: a reception module, configured to receive at least two signals, where the at least two signals occupy at least two time-frequency resources in a set of time-frequency resources, and the time-frequency positions corresponding to the at least two time-frequency resources are different; wherein, the at least two signals are generated based on the same signal sequence.

55. A terminal device, wherein, the terminal device includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; Among them, the terminal device is used to implement the signal sending method according to any one of claims 1 to 26, or implement the signal receiving method according to any one of claims 27 to 52.

56. A network device, characterized in that the network device includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; Among them, the network device is used to implement the signal sending method according to any one of claims 1 to 26, or implement the signal receiving method according to any one of claims 27 to 52.

57. A computer-readable storage medium, characterized in that executable instructions are stored in the computer-readable storage medium, and the executable instructions are loaded and executed by the processor to implement the signal sending method according to any one of claims 1 to 26, or implement the signal receiving method according to any one of claims 27 to 52.

58. A chip, characterized in that the chip includes a programmable logic circuit or program, and the chip is used to implement the signal sending method according to any one of claims 1 to 26, or implement the signal receiving method according to any one of claims 27 to 52.

59. A computer program product, characterized in that the computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium, a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the signal sending method according to any one of claims 1 to 26, or implements the signal receiving method according to any one of claims 27 to 52.

60. A computer program, characterized in that the computer program includes computer instructions, and a processor of a computer device executes the computer instructions, so that the computer device executes the signal sending method according to any one of claims 1 to 26, or implements the signal receiving method according to any one of claims 27 to 52.

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