Time window configuration method and apparatus, and device, medium and product

Abstract

The present application relates to the field of communications. Disclosed are a time window configuration method and apparatus, and a device, a medium and a product. The method comprises: determining a time window configuration, wherein a time window indicated by the time window configuration is used for sending at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value. The method provided in the present application facilitates the determination of at least two sensing signals with the same random phase, and improves the precision of a phase-based sensing method (such as a distance measurement method and a speed measurement method) by means of eliminating random phases of the at least two sensing signals.

Description

Methods, devices, equipment, media, and products for configuring time windows Technical Field

[0001] This application relates to the field of communications, and in particular to a method, apparatus, device, medium, and product for configuring a time window. Background Technology

[0002] Integrating wireless sensing with mobile communication to achieve converged sensing communication services is one of the new technologies proposed by 3GPP (Third Generation Partnership Project). It utilizes higher frequency bands, wider bandwidth, and larger-scale antenna arrays to enable the entire communication system to function as a sensor for high-precision, high-resolution sensing. Random phase refers to the phase update introduced during signal transmission and reception due to changes in the device state of the terminal or base station.

[0003] In sensing, the presence of random phase will affect phase-based ranging and velocity measurement methods. However, since random phase is introduced by changes in device state, it is generally irregular and difficult to estimate. Therefore, designing a random phase elimination method for sensing is an urgent problem to be solved.

[0004] Summary of the Invention

[0005] This application provides a method, apparatus, device, medium, and product for configuring time windows, the technical solution of which is as follows:

[0006] According to one aspect of this application, a method for determining a time window configuration is provided, the method being executed by a first node, the method comprising:

[0007] A time window configuration is determined, wherein the time window configuration indicates a time window for transmitting at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0008] According to one aspect of this application, a method for sending configuration information is provided, the method being executed by a first node, the method comprising:

[0009] The configuration information is sent to the second node. The configuration information is used to indicate at least one piece of information in the time window. The time window is used to send at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0010] According to one aspect of this application, a method for determining a time window configuration is provided, the method being executed by a second node, the method comprising:

[0011] A time window configuration is determined, wherein the time window configuration indicates a time window for receiving at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0012] According to one aspect of this application, a method for receiving configuration information is provided, the method being executed by a second node, the method comprising:

[0013] The system receives configuration information sent by a first node. The configuration information is used to indicate at least one piece of information for a time window. The time window is used to receive at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0014] According to one aspect of this application, a time window configuration determination apparatus is provided, the apparatus comprising:

[0015] The first determining module is used to determine a time window configuration, wherein the time window configuration indicates a time window for sending at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0016] According to one aspect of this application, a configuration information transmitting apparatus is provided, the apparatus comprising:

[0017] The sending module is used to send configuration information to the second node. The configuration information is used to indicate at least one piece of information in a time window. The time window is used to send at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0018] According to one aspect of this application, a time window configuration determination device is provided, the device comprising:

[0019] The second determining module is used to determine a time window configuration, wherein the time window configuration indicates a time window for receiving at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0020] According to one aspect of this application, a configuration information receiving device is provided, the device comprising:

[0021] The receiving module is used to receive configuration information sent by the first node. The configuration information is used to indicate at least one piece of information in a time window. The time window is used to receive at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0022] According to one aspect of this application, a first node is provided, the first node comprising:

[0023] A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method for determining the time window configuration described above, and / or, the method for sending configuration information.

[0024] According to one aspect of this application, a second node is provided, the second node comprising:

[0025] A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method for determining the time window configuration described above, and / or, a method for receiving configuration information.

[0026] According to one aspect of this application, a computer-readable storage medium is provided, wherein at least one program is stored in the computer-readable storage medium, the at least one program being loaded and executed by a processor to implement the above-described method for determining the time window configuration, and / or, a method for sending configuration information, and / or, a method for receiving configuration information.

[0027] According to one aspect of this application, a chip is provided, the chip including programmable logic circuitry and / or program instructions, which, when the chip is running on a first node, are used to implement the above-described method for determining the time window configuration, and / or a method for sending configuration information, and / or a method for receiving configuration information.

[0028] According to one aspect of this application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium, a processor retrieving the computer instructions from the computer-readable storage medium, the processor executing the computer instructions to implement the above-described method for determining the time window configuration, and / or, a method for sending configuration information, and / or, a method for receiving configuration information.

[0029] The technical solutions provided in this application have at least the following beneficial effects:

[0030] By determining the time window configuration so that the random phases of at least two sensing signals within the time window are the same or the random phase difference is less than a threshold value, the random phases of at least two sensing signals with the same random phase can be eliminated during the sensing process, thereby improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 shows a schematic diagram of a mobile communication system provided in an exemplary embodiment of this application;

[0033] Figure 2 shows a schematic diagram of the sensing modes provided by the relevant technologies;

[0034] Figure 3 illustrates a schematic diagram of multiple sensing nodes participating in sensing according to an exemplary embodiment of this application;

[0035] Figure 4 shows a flowchart of a method for determining a time window configuration provided in an exemplary embodiment of this application;

[0036] Figure 5 shows a flowchart of a method for determining a time window configuration provided in an exemplary embodiment of this application;

[0037] Figure 6 illustrates the relationship between the length of the time window and the period provided in an exemplary embodiment of this application;

[0038] Figure 7 illustrates the relationship between the length of the time window and the period provided in an exemplary embodiment of this application;

[0039] Figure 8 shows a flowchart of a method for sending configuration information provided in an exemplary embodiment of this application;

[0040] Figure 9 shows a flowchart of a method for receiving configuration information provided in an exemplary embodiment of this application;

[0041] Figure 10 shows a structural block diagram of a time window configuration determination device provided in an exemplary embodiment of this application;

[0042] Figure 11 shows a structural block diagram of a time window configuration determination device provided in an exemplary embodiment of this application;

[0043] Figure 12 shows a structural block diagram of a configuration information transmitting device provided in an exemplary embodiment of this application;

[0044] Figure 13 shows a structural block diagram of a configuration information receiving device provided in an exemplary embodiment of this application;

[0045] Figure 14 shows a schematic diagram of the structure of a first node provided in an exemplary embodiment of this application;

[0046] Figure 15 shows a schematic diagram of the structure of a second node provided in an exemplary embodiment of this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail here, examples of which are illustrated 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 this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0048] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also 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 includes any and all possible combinations of one or more of the associated listed items.

[0049] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, 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 "when," "when," or "in response to determination."

[0050] The technical solutions described in some embodiments of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, Advanced Long Term Evolution (LTE-A) systems, New Radio (NR) systems, evolution systems of NR systems, LTE-based access to unlicensed spectrum (LTE-U) systems, NR-based access to unlicensed spectrum (NR-U) systems, Non-Terrestrial Networks (NTN) systems, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), 5th-Generation (5G) systems, cellular IoT systems, cellular passive IoT systems, and can also be applied to subsequent evolution systems of 5G NR systems, as well as 6G and subsequent evolution systems.

[0051] It should be understood that in some embodiments of this application, "5G" may also be referred to as "5G NR" or "NR".

[0052] It should be understood that in the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0053] In this embodiment of the application, "predefined" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including the first node and the second node). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0054] In this application embodiment, "protocol" may refer to standard protocols in the field of communication, such as LTE protocol, NR protocol and related protocols applied to future communication systems, and this application does not limit it.

[0055] In the embodiments of this application, "perception" can also be understood as at least one of the following meanings: positioning, ranging, speed measurement, angle measurement, target imaging, target detection, target tracking, and target recognition.

[0056] Figure 1 shows a schematic diagram of a mobile communication system provided in an exemplary embodiment of this application. The mobile communication system includes a network device 110 and a terminal device 120, and may or may not include a terminal device 130; this application does not limit this.

[0057] The network device 110 in this application provides wireless communication functionality. This network device 110 includes, but is not limited to: an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a Home Evolved Node B (or Home Node B, HNB), a Base Band Unit (BBU), an Access Point (AP) in a Wireless Fidelity (Wi-Fi) system, a wireless relay node, a wireless backhaul node, a Transmission Point (TP), or a Transmission and Reception Point (TRP), etc. It can also be used for next-generation Node B (Next Generation Node) systems in 5G mobile communication systems. B, gNB) or transmission point (TRP or TP), or, in a 5G system, one or a group of antenna panels (including multiple antenna panels) of a base station, or, network nodes constituting a gNB or transmission point, such as baseband unit (BBU) or distributed unit (DU), or base stations in Beyond Fifth Generation (B5G) or 6th Generation (6G) mobile communication systems, or core network (CN), fronthaul, backhaul, radio access network (RAN), network slicing, etc., or serving cell, primary cell (PCell), primary secondary cell (PSCell), special cell (SpCell), secondary cell (SCell), neighboring cell, etc. of terminal equipment.

[0058] The terminal equipment 120 in this application is also referred to as user equipment (UE), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, remote terminal equipment, mobile device, user terminal equipment, terminal equipment, wireless communication equipment, user agent, or user device. The terminal devices include, but are not limited to: handheld devices, wearable devices, in-vehicle devices, and IoT devices, such as: mobile phones, tablets, e-readers, laptops, desktop computers, televisions, game consoles, mobile internet devices (MID), augmented reality (AR) terminal devices, virtual reality (VR) terminal devices, mixed reality (MR) terminal devices, extended reality (XR) terminal devices, baffle reality (BR) terminal devices, cinematic reality (CR) terminal devices, deceive reality (DR) terminal devices, wearable devices, controllers, controllers, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical care, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, and smart city technologies. Wireless terminal devices in cities, smart homes, remote medical surgeries, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), Set-Top Boxes (STBs), Customer Premise Equipment (CPEs), etc.

[0059] In some embodiments, network device 110 and terminal device 120 communicate with each other through some air interface technology, such as the Uu interface.

[0060] For example, there are two communication scenarios between network device 110 and terminal device 120: uplink communication scenario and downlink communication scenario. Uplink communication, or uplink transmission, refers to sending signals or data to network device 110; downlink communication, or downlink transmission, refers to sending signals or data to terminal device 120.

[0061] In some embodiments, terminal device 120 and terminal device 130 communicate with each other through some air interface technology, such as the PC5 interface.

[0062] For example, there are two communication scenarios between terminal device 120 and terminal device 130: a first side-by-side communication scenario and a second side-by-side communication scenario. The first side-by-side communication refers to terminal device 120 sending signals to terminal device 130; the second side-by-side communication refers to terminal device 130 sending signals to terminal device 120.

[0063] In some embodiments, terminal device 120 and terminal device 130 are both within network coverage and located in the same cell, or terminal device 120 and terminal device 130 are both within network coverage but located in different cells, or terminal device 120 is within network coverage but terminal device 130 is outside network coverage.

[0064] In some embodiments of this application, "NR" may also be referred to as a 5G NR system or a 5G system. The 5G mobile communication system may include non-standalone (NSA) and / or standalone (SA) networking.

[0065] The technical solutions provided in the embodiments of this application can also be applied to Machine-Type Communication (MTC), Long Term Evolution-Machine (LTE-M) technology, Device-to-Device (D2D) networks, Machine-to-Machine (M2M) networks, Internet of Things (IoT) networks, or other networks. Among them, IoT networks may include, for example, vehicle-to-everything (V2X) networks. The communication methods in V2X systems are collectively referred to as Vehicle to X (V2X), where X can represent anything. For example, V2X may include: Vehicle to Vehicle (V2V) communication, Vehicle to Infrastructure (V2I) communication, Vehicle to Pedestrian (V2P) communication, or Vehicle to Network (V2N) communication, etc.

[0066] The mobile communication system provided in this application embodiment can be applied to at least one of the following communication scenarios: uplink communication scenario, downlink communication scenario, and sidelink communication scenario.

[0067] Next-generation networks (such as 6G networks) are expected to be a fusion of mobile communication networks, sensing networks, and computing networks. In a narrow sense, a sensing network refers to a system with capabilities such as target localization (ranging, velocity, angle measurement), target imaging, target detection, target tracking, and target recognition. In a broad sense, a sensing network refers to a system that possesses the attributes and states of all services, networks, users, terminals, and environmental objects. From the perspective of sensing applications, sensing can be categorized as follows:

[0068] • Outdoor / Wide Area / Local Area Applications: including smart cities (e.g., weather monitoring), smart transportation / high-speed rail (e.g., high-precision map building, road monitoring, intrusion detection), low-altitude applications (e.g., drone monitoring and obstacle avoidance, flight intrusion detection, flight path management), etc.

[0069] • Indoor / Local Area Applications: Including smart home and health management (e.g., respiratory monitoring, intrusion detection, gesture / posture recognition, motion monitoring, movement trajectory tracking, etc.), smart factories (e.g., intrusion detection, material detection, object defect detection, etc.).

[0070] The above are just examples to provide some classifications of sensing applications; the scope of sensing applications is not limited to the examples above.

[0071] Wireless communication and sensing are two major applications of modern radio frequency (RF) technology. Sensing utilizes radio waves to detect parameters of the physical environment to achieve environmental perception such as target localization, action recognition, and target imaging. Traditionally, sensing and wireless communication exist independently, and this separate design leads to a waste of wireless spectrum and hardware resources. With the advent of B5G and 6G, communication spectrum is moving towards millimeter waves, terahertz, and visible light communication; in the future, the spectrum of wireless communication will overlap with the spectrum of traditional sensing. Integrated communication and sensing technology merges these two functions. It can utilize the wireless resources of wireless communication to achieve sensing capabilities; it can leverage widely deployed cellular networks to achieve sensing services over a wider area; it can utilize base stations and multiple terminals for joint sensing to achieve higher sensing accuracy; and it can reuse wireless communication hardware modules to achieve sensing functions, reducing costs. In short, integrated communication and sensing technology enables future wireless communication systems to possess sensing capabilities, providing a foundation for the development of future smart transportation, smart cities, smart factories, drones, and other related businesses.

[0072] The nodes and / or entities involved in sensing include, but are not limited to: sensing transmitting nodes (nodes that transmit sensing signals) and sensing receiving nodes (nodes that receive sensing signals).

[0073] Figure 2 shows a schematic diagram of the sensing modes provided by the relevant technologies, including the following eight sensing modes.

[0074] Mode 1: Base station self-transmitting and self-receiving sensing. In Mode 1, the sensing transmitting node and the sensing receiving node are the same base station 41. That is, base station 41 sends a sensing signal to the sensing target 42, and after the sensing signal is reflected by the sensing target 42, the same base station 41 receives the reflected signal (i.e., the sensing signal after being reflected by the sensing target).

[0075] Mode 2: Terminal-based self-transmitting and self-receiving sensing. In Mode 2, the sensing sending node and the sensing receiving node are the same terminal 43. That is, terminal 43 sends a sensing signal to the sensing target 44, and after the sensing signal is reflected by the sensing target 44, the same terminal 43 receives the reflected signal.

[0076] Mode 3: Base Station Collaborative Sensing. In Mode 3, the sensing transmitting node and the sensing receiving node are different base stations. That is, one base station 45 sends a sensing signal to the sensing target 46, and after the sensing signal is reflected by the sensing target 46, the reflected signal is received by another base station 47.

[0077] Mode 4: Terminal Collaborative Sensing. In Mode 4, the sensing sending node and the sensing receiving node are different terminals. That is, one terminal 48 sends a sensing signal to the sensing target 49, and after the sensing signal is reflected by the sensing target 49, the reflected signal is received by another terminal 50.

[0078] Mode 5: Base station-terminal cooperative sensing. In Mode 5, the sensing transmitting node is base station 51, and the sensing receiving node is terminal 53. That is, base station 51 sends a sensing signal to sensing target 52, and after the sensing signal is reflected by sensing target 52, the reflected signal is received by terminal 53.

[0079] Mode 6: Terminal-Base Station Collaborative Sensing. In Mode 6, the sensing transmitting node is terminal 54, and the sensing receiving node is base station 56. That is, terminal 54 sends a sensing signal to sensing target 55, and after the sensing signal is reflected by sensing target 55, the reflected signal is received by base station 56.

[0080] Mode 7: The sensing target is the sensing transmitting node. In Mode 7, the sensing transmitting node is terminal 57, and the sensing receiving node is base station 58. Since the sensing target (terminal 57) is the sensing transmitting node, the sensing signal sent from the sensing transmitting node (terminal 57) to the sensing receiving node (base station 58) does not require reflection and can be directly analyzed by base station 58 after reception.

[0081] Mode 8: The sensing target is the sensing receiving node. In Mode 8, the sensing transmitting node is base station 59, and the sensing receiving node is terminal 60. Since the sensing target (terminal 60) is the sensing receiving node, after receiving the sensing signal, terminal 60 needs to feed back the sensing result to base station 59 so that base station 59 can know the sensing result.

[0082] Sensing signal transmitting nodes and sensing signal receiving nodes can be collectively referred to as sensing nodes. In the eight sensing modes mentioned above, there are only single or pairs of sensing nodes. However, in wireless communication systems, the number of terminals (mobile phones, IoT devices, etc.) is large. When multiple sensing nodes (base stations, mobile phones, IoT devices, etc. that transmit and / or receive sensing signals) exist around a sensed terminal, the joint participation of multiple sensing nodes can improve the accuracy of sensing and meet more complex sensing service requirements, providing richer sensing services. When multiple sensing nodes exist in the system, a sensing control node may exist to control and manage the entire sensing service to improve efficiency. This sensing control node can be a base station, a terminal, or a core network element. In other words, the sensing control node is the node responsible for controlling and managing the sensing service in the sensing system; it can also be called a sensing management node.

[0083] Figure 3 illustrates a schematic diagram of multiple sensing nodes participating in sensing according to an exemplary embodiment of this application. Taking the vehicle-mounted device as the sensing terminal 310 and the terminal or base station as the sensing control node 320 as an example, the sensing control node 320 can send communication signals to sensing node 1 and the sensing terminal 310, and sensing node 1, sensing node 2, and sensing node 3 can send sensing signals to the sensing terminal 310, thereby enabling multiple sensing nodes to participate in sensing together, improving the accuracy of sensing, meeting more complex sensing service requirements, and providing richer sensing services.

[0084] First, let me introduce the relevant content involved in this application.

[0085] Random phase: Phase updates (also known as phase jumps) introduced during signal transmission and reception due to changes in the device states of the terminal or base station. Device states include at least one of the following: the state of the transmitting antenna, the state of the RF module (including various devices connected to the RF channel), the state of the digital processing module, and the state of the clock module. Changes in device states include switching, parameter adjustments, etc.

[0086] Phase-based ranging: Ranging is achieved by measuring the phase of the echo signal and comparing or calculating it with the phase of the transmitted signal.

[0087] Phase-based velocimetry: Since the change in distance R of an object will cause a change in the phase of the received signal, the velocity / Doppler of the object can be estimated by observing the phase change of the received signal over a period of time and using R / t.

[0088] Figure 4 illustrates a method for determining a time window configuration provided in an exemplary embodiment of this application. This method is executed by a first node and includes:

[0089] Step 410: Determine the time window configuration, the time window configuration indicates the time window for sending at least two sensing signals, and the random phases of at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0090] Here, random phase difference refers to the absolute value of the difference between the random phases of two sensed signals. At least two sensed signals having a random phase difference less than a threshold means that the absolute value of the random phase difference between any two sensed signals is less than the threshold.

[0091] In some embodiments, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitudes of the at least two sensing signals are the same or the amplitude difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, meaning the amplitude difference is only affected by hardware channels such as RF, antenna, and power amplifier, and also by the device states of the sensing transmitting and receiving nodes. The amplitude difference refers to the absolute value of the difference between the amplitudes of the two sensing signals.

[0092] In some embodiments, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude / random phase difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, i.e., the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier. Optionally, a threshold value is set for both amplitude and random phase; that is, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude difference is less than a first threshold value or the random phase difference is less than a second threshold value.

[0093] The threshold value can be defined by the protocol; or configured by the sensing sending node; or configured by the sensing receiving node; or configured by the sensing management node. If configured by the sensing sending node, the threshold value directly reflects the capabilities of the sensing sending node. If configured by the sensing receiving node, the threshold value reflects the requirements for the transmitted signal (or sensing signal) during sensing reception processing. The sensing management node can comprehensively consider the sensing service requirements and / or the capabilities of the sensing sending node and / or the requirements of the sensing receiving node to set a reasonable threshold value. The time window is a continuous time period or time domain dimension, and the unit of the time window is at least one of frame, subframe, slot, or symbol. Optionally, the duration of a frame is defined as 10ms; a frame includes 10 subframes, and the duration of a subframe is 1ms; a subframe includes i time slots, where i is a positive integer, and the value of i is related to the subcarrier spacing. The larger the subcarrier spacing, the shorter the actual duration of a time slot; a time slot includes 14 symbols, which can be OFDM (Orthogonal Frequency Division Multiplexing) symbols. It should be noted that the duration of a frame can also be defined as other durations, such as 15ms, 20ms, etc., and this embodiment does not limit this. For example, the time window can be N symbols, half a time slot, 1 time slot, M time slots, 1 frame, K frames, 1ms, 10ms, L ms, etc.

[0094] In some embodiments, the time window configuration is used to indicate at least one time window. Optionally, when the time window configuration indicates at least two time windows, each of the at least two time windows is periodic.

[0095] In some embodiments, the time window configuration is used to indicate at least two time windows in which the random phase of the sensed signals is the same in each time window, and the random phases of the sensed signals in different time windows are the same or different. For example, the time window configuration indicates three time windows, where at least two sensed signals in time window 1 have a random phase of 0.5π, at least two sensed signals in time window 2 have a random phase of 0.75π, and at least two sensed signals in time window 3 have a random phase of 0.5π; that is, the random phases of the sensed signals in time window 1 and time window 3 are different, and the random phases of the sensed signals in time window 1 and time window 3 are the same.

[0096] In some embodiments, the time window configuration is agreed upon by the protocol; or, the time window configuration is determined based on the sensing service; or, the time window configuration is determined according to the protocol and the sensing service, that is, the first part of the time window configuration is agreed upon by the protocol, and the second part of the configuration is determined based on the sensing service.

[0097] Furthermore, if at least two sensed signals have the same random phase, meaning that the random phases corresponding to each sensed signal are identical, then the sensed signal receiving node can eliminate the random phase of the at least two sensed signals carried within that time window. The method for eliminating random phase (or calculating random phase) can be similar to the method for estimating Doppler frequency offset in the field of communications, such as finding the conjugate or correlation of the sensed signals. If the difference in random phase between at least two sensed signals is less than a threshold value, it can be approximately considered that the random phases corresponding to each sensed signal are identical; that is, the random phase can be eliminated by finding the conjugate or correlation. The same principle applies to the cases where the amplitudes of at least two sensed signals are identical and the amplitude difference is less than a threshold value; the random phase can also be eliminated by finding the conjugate or correlation.

[0098] In other words, the sensing receiving node processes the sensing signals based on a time window configuration. For at least two sensing signals within the same time window, the conjugate or correlation of the at least two sensing signals is calculated to eliminate the random phase of the at least two sensing signals; for at least two sensing signals from different time windows, after eliminating the random phase, they can be combined to improve the SNR (signal-noise ratio), thereby improving the accuracy and precision of the sensing service.

[0099] In some embodiments, the first node is a sensing transmission node; or, the first node is a sensing management node; or, the first node is a sensing management node that manages the sensing transmission node, that is, the sensing transmission node and the sensing management node are located in the same sensing system.

[0100] In summary, the method provided in this application, by determining the time window configuration so that the random phases of at least two sensing signals within the time window are the same or the random phase difference is less than a threshold value, enables the elimination of the random phases of at least two sensing signals with the same random phase during the sensing process, thereby improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process.

[0101] Furthermore, the method for determining the random phase can be extended to methods for determining the amplitude that is only affected by changes in device state and other parameters that are only affected by changes in device state. The embodiments of this application use the method for determining the random phase as an example, but the scope of protection of this application is not limited thereto.

[0102] During the sensing process, in addition to the random phase introduced by device changes at the sensing transmitting node during signal transmission, random phase is also introduced by device changes at the sensing receiving node during signal reception. Therefore, the second node also needs to determine the time window configuration and ensure that the random phase of at least two sensing signals is not changed when receiving sensing signals within the time window indicated by the time window configuration. Figure 5 illustrates a method for determining the time window configuration provided in an exemplary embodiment of this application. This method is executed by the second node and includes:

[0103] Step 510: Determine the time window configuration, wherein the time window configuration indicates that the time window is used to receive at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0104] Here, random phase difference refers to the absolute value of the difference between the random phases of two sensed signals. At least two sensed signals having a random phase difference less than a threshold means that the absolute value of the random phase difference between any two sensed signals is less than the threshold.

[0105] In some embodiments, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitudes of the at least two sensing signals are the same or the amplitude difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, meaning the amplitude difference is only affected by hardware channels such as RF, antenna, and power amplifier, and also by the device states of the sensing transmitting and receiving nodes. The amplitude difference refers to the absolute value of the difference between the amplitudes of the two sensing signals.

[0106] In some embodiments, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude / random phase difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, i.e., the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier. Optionally, a threshold value is set for both amplitude and random phase; that is, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude difference is less than a first threshold value or the random phase difference is less than a second threshold value.

[0107] The threshold value can be defined by the protocol; or configured by the sensing sending node; or configured by the sensing receiving node; or configured by the sensing management node. If configured by the sensing sending node, the threshold value directly reflects the capabilities of the sensing sending node. If configured by the sensing receiving node, the threshold value reflects the requirements for the transmitted signal (or sensing signal) during sensing reception processing. The sensing management node can comprehensively consider the sensing service requirements and / or the capabilities of the sensing sending node and / or the requirements of the sensing receiving node to set a reasonable threshold value.

[0108] The time window is a continuous time period or time domain dimension, and its unit is at least one of frame, subframe, time slot, or symbol. Optionally, the duration of a frame is defined as 10 ms; a frame includes 10 subframes, and the duration of a subframe is 1 ms; a subframe includes i time slots, where i is a positive integer, and the value of i is related to the subcarrier spacing. The larger the subcarrier spacing, the shorter the actual duration of a time slot; a time slot includes 14 symbols, which can be OFDM symbols. It should be noted that the duration of a frame can also be defined as other durations, such as 15 ms, 20 ms, etc., and this application embodiment does not limit this. For example, the time window can be N symbols, half a time slot, 1 time slot, M time slots, 1 frame, K frames, 1 ms, 10 ms, L ms, etc.

[0109] In some embodiments, the time window configuration is used to indicate at least one time window. Optionally, when the time window configuration indicates at least two time windows, each of the at least two time windows is periodic.

[0110] In some embodiments, the time window configuration is agreed upon by the protocol; or, the time window configuration is determined based on the sensing service; or, the time window configuration is determined according to the protocol and the sensing service, that is, the first part of the time window configuration is agreed upon by the protocol, and the second part of the configuration is determined based on the sensing service.

[0111] Furthermore, if at least two sensed signals have the same random phase, meaning that the random phases corresponding to each sensed signal are identical, then the sensed signal receiving node can eliminate the random phase of the at least two sensed signals carried within that time window. The method for eliminating random phase (or calculating random phase) can be similar to the method for estimating Doppler frequency offset in the field of communications, such as finding the conjugate or correlation of the sensed signals. If the difference in random phase between at least two sensed signals is less than a threshold value, it can be approximately considered that the random phases corresponding to each sensed signal are identical; that is, the random phase can be eliminated by finding the conjugate or correlation. The same principle applies to the cases where the amplitudes of at least two sensed signals are identical and the amplitude difference is less than a threshold value; the random phase can also be eliminated by finding the conjugate or correlation.

[0112] In other words, the sensing receiving node processes the sensing signals based on a time window configuration. For at least two sensing signals within the same time window, the conjugate or correlation of the at least two sensing signals is calculated to eliminate the random phase of the at least two sensing signals; for at least two sensing signals within different time windows, after eliminating the random phase, they can be combined to improve the SNR, thereby improving the accuracy and precision of the sensing service.

[0113] In some embodiments, the second node is a sensing and receiving node.

[0114] In summary, the method provided in this application, by determining the time window configuration so that the random phases of at least two sensing signals within the time window are the same, enables the elimination of the random phases of at least two sensing signals with the same random phase during the sensing process, thereby improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process.

[0115] The following section describes the parameters involved in time window configuration. Specifically, time window configuration includes at least one of the following: the length of the time window; the start position of the time window; the period of the time window; and the end position of the time window.

[0116] The length of the time window indicates the length of the corresponding time period or time domain dimension. In some embodiments, the length of the time window includes the unit of the time window, such as the length of the time window being N symbols, half a time slot, 1 time slot, M time slots, 1 frame, K frames, 1ms, 10ms, L ms, etc.; or, the length of the time window does not include the unit of the time window, and the unit of the time window is agreed upon by the protocol, such as the protocol agreeing that the unit of the time window is a time slot, and the length of the time window being 0.5, 1, M, etc.

[0117] In some embodiments, the starting position of the time window is a timestamp; or, the starting position of the time window is a point in time (or moment); or, the starting position of the time window is a time-domain unit. For example, the starting position of the time window is a specific timestamp "1718672665390"; or, the starting position of the time window is a point in time determined based on the start signal and the signal delay, such as the starting position being the time when the start signal is sent. For the sensing transmitting node, the starting position of its determined time window is the moment when it sent the start signal; for the sensing receiving node, since there may be a delay during signal transmission, the sensing receiving node needs to calculate the time when the start signal is sent based on the moment it receives the start signal and the signal delay, and use the time when the start signal is sent as the starting position of the time window; or, the starting position of the time window is the number of a time-domain unit.

[0118] In some embodiments, the period of a time window is used to indicate the length of the period corresponding to a time window. The period of a time window is greater than the length of the time window; and / or, the period of a time window is equal to the length of the time window. For example, the period of a time window is equal to the length of the time window, the length of the time window is 3ms, and the period of the time window is also 3ms, that is, the time windows are continuous, or the interval between time windows is 0; as shown in Figure 6, the length and period of the time window are both 3ms, that is, the end position of time window 1 is the start position of time window 2, the end position of time window 2 is the start position of time window 3, and the end position of time window 3 is the start position of time window 4; or, the period of a time window is greater than the length of the time window, the length of the time window is 3ms, and the period of the time window is 5ms; as shown in Figure 7, the start position of time window 2 is 2ms after the end position of time window 2; the start position of time window 3 is 2ms after the end position of time window 2.

[0119] In some embodiments, the end position of the time window is a timestamp; or, the end position of the time window is a point in time (or moment); or, the end position of the time window is a time-domain unit. For example, the end position of the time window is a specific timestamp "1718672665390"; or, the end position of the time window is a point in time determined based on the end signal and the signal delay, such as the end position being the time when the end signal was sent. For the sensing transmitting node, the end position of its determined time window is the time when it sent the end signal; for the sensing receiving node, since there may be a delay during signal transmission, the sensing receiving node needs to calculate the time when the end signal was sent based on the time when it received the end signal and the signal delay, and use the time when the end signal was sent as the end position of the time window; or, the end position of the time window is the number of a time-domain unit.

[0120] In some embodiments, the time window configuration is protocol-defined; or, the time window configuration is determined based on the sensing service. The time window configuration ensures that the random phases of at least two sensing signals transmitted within the time window are identical. Random phases arise because the device state of the sensing transmitting node or sensing receiving node changes during the transmission or reception of at least two sensing signals. During the sensing process, the sensing receiving node is responsible for processing the sensing signals, i.e., eliminating the random phases of the sensing signals. The sensing receiving node is aware of whether the device state has changed during the reception of the sensing signals, and can ensure that the selected sensing signals have not undergone random phase changes during reception. However, without protocol-defined or pre-configured methods, the sensing receiving node cannot determine whether random phase changes occurred during transmission. Therefore, to ensure that the random phases of at least two sensing signals are identical, the time window configurations determined by the sensing transmitting node and the sensing receiving node must be consistent.

[0121] For the sensing receiving node, the time window configuration is used to indicate that the random phase of at least two sensing signals within the time window indicated by the time window configuration has not changed during the transmission process of the sensing transmitting node; for the sensing transmitting node, it is used to indicate that when transmitting at least two sensing signals within the time window indicated by the time window configuration, the random phase of at least two sensing signals is not changed (i.e., the device state of the sensing transmitting node is not changed).

[0122] In some embodiments, the device state of the sensing transmitting node remains unchanged while it transmits at least two sensing signals within a time window; similarly, the device state of the sensing receiving node remains unchanged while it receives at least two sensing signals within a time window.

[0123] In other words, the specific information regarding the time window configuration is primarily determined by the sensing sending node based on the sensing service, and the determined time window configuration is then sent to the sensing receiving node. That is, the sensing sending node indicates the determined time window information to the sensing receiving node through the configuration information. When multiple sensing nodes (sensing sending node and sensing receiving node) participate in sensing, there may be a sensing control node to control and manage the entire sensing service to improve efficiency. In this case, the sensing sending node can inform the sensing management node of its determined configuration information, and the sensing management node is responsible for forwarding it to the sensing receiving node. In some embodiments, the sensing management node may update the configuration information based on the sensing service of the entire sensing system. However, it should be noted that the update of the configuration information by the sensing management node only shortens the length of the time window indicated by the configuration information, and does not lengthen the time window. This will result in the length of the time window determined by the sensing receiving node being greater than the length of the time window determined by the sensing sending node; that is, the presence of the sensing management node may cause a certain difference in the time window configuration determined by the sensing sending node and the sensing receiving node.

[0124] Figure 8 illustrates a method for sending configuration information provided in an exemplary embodiment of this application. The method is executed by a first node and includes:

[0125] Step 610: Send configuration information to the second node. The configuration information is used to indicate at least one piece of information in the time window. The time window is used to send at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0126] Here, random phase difference refers to the absolute value of the difference between the random phases of two sensed signals. At least two sensed signals having a random phase difference less than a threshold means that the absolute value of the random phase difference between any two sensed signals is less than the threshold.

[0127] In some embodiments, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitudes of the at least two sensing signals are the same or the amplitude difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, meaning the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier, and also by the device states of the sensing transmitting and receiving nodes. The amplitude difference refers to the absolute value of the difference between the amplitudes of the two sensing signals.

[0128] In some embodiments, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude / random phase difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, i.e., the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier. Optionally, a threshold value is set for both amplitude and random phase; that is, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude difference is less than a first threshold value or the random phase difference is less than a second threshold value.

[0129] The threshold value can be defined by the protocol; or configured by the sensing sending node; or configured by the sensing receiving node; or configured by the sensing management node. If configured by the sensing sending node, the threshold value directly reflects the capabilities of the sensing sending node. If configured by the sensing receiving node, the threshold value reflects the requirements for the transmitted signal (or sensing signal) during sensing reception processing. The sensing management node can comprehensively consider the sensing service requirements and / or the capabilities of the sensing sending node and / or the requirements of the sensing receiving node to set a reasonable threshold value.

[0130] The configuration information indicates at least one of the following: the length of the time window; the start position of the time window; the period of the time window; the end position of the time window; and an index value. The index value indicates the time window configuration corresponding to the time window; or, the index value indicates the time window configuration, and the time window configuration indicates at least one time window.

[0131] If at least two sensed signals have the same random phase, meaning that the random phases corresponding to each sensed signal are identical, then the sensed signal receiving node can eliminate the random phase of at least two sensed signals carried within that time window. The method for eliminating random phase (or calculating random phase) can be similar to the method for estimating Doppler frequency offset in the field of communications, such as finding the conjugate or correlation of the sensed signals. If the difference in random phase between at least two sensed signals is less than a threshold value, it can be approximately considered that the random phases corresponding to each sensed signal are identical; that is, the random phase can be eliminated by finding the conjugate or correlation. The same principle applies to the cases where the amplitudes of at least two sensed signals are identical and the amplitude difference is less than a threshold value; the random phase can also be eliminated by finding the conjugate or correlation.

[0132] In other words, the sensing receiving node processes the sensing signals based on the time window indicated by the configuration information. For at least two sensing signals within the same time window, the at least two sensing signals are conjugate or correlated to eliminate the random phase of the at least two sensing signals; for at least two sensing signals from different time windows, after eliminating the random phase, they can be combined to improve the SNR, thereby improving the accuracy and precision of the sensing service.

[0133] In some embodiments, the first node is a sensing transmission node; or, the first node is a sensing management node.

[0134] In summary, the method provided in this application embodiment involves a first node sending configuration information indicating a time window to inform a second node that the random phases of at least two sensing signals within the time window indicated by the configuration information are the same. This enables the elimination of the random phases of at least two sensing signals with the same random phase during the sensing process, thereby improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process.

[0135] Figure 9 illustrates a method for receiving configuration information provided in an exemplary embodiment of this application. This method is executed by a second node and includes:

[0136] Step 710: Receive configuration information sent by the first node. The configuration information is used to indicate at least one piece of information in the time window. The time window is used to receive at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0137] Here, random phase difference refers to the absolute value of the difference between the random phases of two sensed signals. At least two sensed signals having a random phase difference less than a threshold means that the absolute value of the random phase difference between any two sensed signals is less than the threshold.

[0138] In some embodiments, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitudes of the at least two sensing signals are the same or the amplitude difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, meaning the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier, and also by the device states of the sensing transmitting and receiving nodes. The amplitude difference refers to the absolute value of the difference between the amplitudes of the two sensing signals.

[0139] In some embodiments, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude / random phase difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, i.e., the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier. Optionally, a threshold value is set for both amplitude and random phase; that is, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude difference is less than a first threshold value or the random phase difference is less than a second threshold value.

[0140] The threshold value can be defined by the protocol; or configured by the sensing sending node; or configured by the sensing receiving node; or configured by the sensing management node. If configured by the sensing sending node, the threshold value directly reflects the capabilities of the sensing sending node. If configured by the sensing receiving node, the threshold value reflects the requirements for the transmitted signal (or sensing signal) during sensing reception processing. The sensing management node can comprehensively consider the sensing service requirements and / or the capabilities of the sensing sending node and / or the requirements of the sensing receiving node to set a reasonable threshold value.

[0141] The configuration information indicates at least one of the following: the length of the time window; the start position of the time window; the period of the time window; the end position of the time window; and an index value. The index value indicates the time window configuration corresponding to the time window; or, the index value indicates the time window configuration, and the time window configuration indicates at least one time window.

[0142] If at least two sensed signals have the same random phase, meaning that the random phases corresponding to each sensed signal are identical, then the sensed signal receiving node can eliminate the random phase of at least two sensed signals carried within that time window. The method for eliminating random phase (or calculating random phase) can be similar to the method for estimating Doppler frequency offset in the field of communications, such as finding the conjugate or correlation of the sensed signals. If the difference in random phase between at least two sensed signals is less than a threshold value, it can be approximately considered that the random phases corresponding to each sensed signal are identical; that is, the random phase can be eliminated by finding the conjugate or correlation. The same principle applies to the cases where the amplitudes of at least two sensed signals are identical and the amplitude difference is less than a threshold value; the random phase can also be eliminated by finding the conjugate or correlation.

[0143] In other words, the sensing receiving node processes the sensing signals based on the time window indicated by the configuration information. For at least two sensing signals within the same time window, the at least two sensing signals are conjugate or correlated to eliminate the random phase of the at least two sensing signals; for at least two sensing signals from different time windows, after eliminating the random phase, they can be combined to improve the SNR, thereby improving the accuracy and precision of the sensing service.

[0144] In some embodiments, the second node is a sensing and receiving node.

[0145] In summary, the method provided in this application determines at least two time windows with the same random phase by receiving configuration information, thereby enabling the elimination of the random phase of at least two sensing signals based on the same random phase during the sensing process, and improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process.

[0146] When the first node sends configuration information to the second node to determine the time window (or time window configuration), the following configuration methods may exist.

[0147] Configuration Method 1: At least configure the length of the time window;

[0148] Configuration Method 2: At least configure the start / end position of the time window;

[0149] Configuration Method 3: Configure the minimum length of the time window and the start / end position of the time window.

[0150] The three configuration methods will be introduced below. It should be noted that the order of introduction does not affect the merits of each configuration method.

[0151] Configuration Method 1: At least configure the length of the time window.

[0152] In some embodiments, the first node sends first configuration information to the second node, the first configuration information being used to indicate the length of the time window.

[0153] In some embodiments, the first configuration information includes at least one of the following: the length of the time window; the start position of the time window; the period of the time window; the end position of the time window; and an index value, which is used to indicate the time window configuration.

[0154] As an example and not a limitation, the first configuration information sent by the first node to the second node only includes the length of the time window, which is 3ms. Therefore, the time window is a 3ms period starting from the end time of the first configuration information (or the starting position of the time window). For the sensing sending node, the end time of the first configuration information is the time when the signal carrying the first configuration information ends transmission; for the sensing receiving node, it is the time when the signal carrying the first configuration information ends reception.

[0155] For example, the first configuration information includes the start position and length of the time window. The start position of the time window is a timestamp, and the specific time window can be determined based on this timestamp and the length of the time window. When the sensing signal is transmitted, it carries the timestamp of when the sensing signal began to be transmitted, so whether the sensing signal is within the time window can be determined based on the timestamp carried by the sensing signal. Alternatively, the first configuration information includes the start position, length, and period of the time window. Alternatively, the first configuration information includes the start and end positions of the time window; that is, the first configuration information uses the start and end positions of the time window to indicate the length of the time window. Alternatively, the first configuration information includes the start and end positions of the time window and the period of the time window. Alternatively, the first configuration information includes the length and period of the time window. At this point, the starting point of the time window is the end time of the first configuration information. The length and period of the time window are both 3ms. Therefore, the first time window starts counting from the end time of the first configuration information and is spaced 3ms apart. The starting position of the second time window is the end position of the first time window, and so on. At least two time windows can be determined based on the first configuration information.

[0156] In some embodiments, the first node and the second node store at least two sets of time window configurations, each set of time window configurations corresponding to an index value. The at least two sets of time window configurations are agreed upon by the protocol; or, the at least two sets of time window configurations are pre-configured, for example, the sensing transmitting node determines at least two sets of time window configurations based on sensing services and sends these at least two sets of time window configurations to the sensing receiving node. Optionally, the at least two sets of time window configurations include the same information type; or, the at least two sets of time window configurations include different information types.

[0157] For example, at least two sets of time window configurations include the same type of information, and each set of time window configurations includes the length and period of the time window. The three sets of time window configurations stored in the first node and the second node are shown in Table 1 below.

[0158] Table 1. Time window configuration stored in the first and second nodes

[0159] For example, at least two sets of time window configurations include different types of information. Each set of time window configurations is applicable to different sensing services. For instance, the time window configuration corresponding to index value "00" is applicable to sensing services that require only one sensing measurement, while the time window configurations corresponding to index values ​​"01" and "10" are applicable to sensing services that require repeated accumulation or continuous tracking (such as health status tracking, environmental parameter detection, etc.). The three sets of time window configurations stored in the first and second nodes are shown in Table 2 below.

[0160] Table 2. Time window configuration stored in the first and second nodes

[0161] In some embodiments, the sensing sending node and sensing receiving node are in a scenario requiring constant sensing. The sensing sending node determines three sets of time window configurations based on the sensing services of the previous n days, pre-configures these time window configurations for the sensing receiving node, and agrees that index values ​​will be used to indicate the time window configuration thereafter. Alternatively, the sensing system includes a sensing management node. Based on the sensing services of the previous n days, the sensing management node integrates the three most commonly used sets of time window configurations and sends them to the sensing sending node and sensing receiving node. It agrees that index values ​​will be used preferentially to indicate the time window configuration, and the sensing sending node will only re-determine and send the time window configuration if the pre-configured time window configuration does not conform to the sensing services.

[0162] The following section demonstrates how to determine the various pieces of information in the first configuration information based on the perception service.

[0163] In some embodiments, the first configuration information is determined based on at least one of the following: characteristics of the sensing service; performance requirements of the sensing service. Wherein, the sensing service is the sensing service corresponding to the sensing signal. That is, the first node receives the characteristics of the sensing service and / or the performance requirements of the sensing service. Optionally, the characteristics of the sensing service and / or the performance requirements of the sensing service are sent by the sensing management node; or, the characteristics of the sensing service and / or the performance requirements of the sensing service are sent by the sensing client (the initiator of the sensing service); or, the characteristics of the sensing service and / or the performance requirements of the sensing service are sent by both the sensing management node and the sensing client.

[0164] In some embodiments, the characteristics of the sensing service include at least one of the following: the periodicity of the sensing service; the motion pattern of the sensing target.

[0165] The periodicity of the sensing service is used to determine the period of the time window. When the sensing service is periodic, the period of the time window is set in the first configuration information based on the period of the sensing service.

[0166] The parameters corresponding to the motion law of the perceived target include, but are not limited to: velocity, Doppler, micro-Doppler, velocity range, Doppler range, micro-Doppler range, and reciprocating frequency range. The motion law of the perceived target is used to determine at least one of the following: the length of the time window, the initial position of the time window, and the end position of the time window.

[0167] For example, the length of the time window (or the start and end positions of the time window) is determined based on at least one of the following: the Doppler of the target; the velocity of the target; or the micro-Doppler of the target. Wherein, the target is the target sensed by the sensing signal; or, the target is the target of this sensing service; or, the target is the target that the sensing signal intends to sense. The Doppler of the target is the frequency change between the frequency of the signal received by the sensing receiver and the frequency of the signal emitted by the sensing transmitter when the target moves relative to the sensing transmitter. The velocity of the target is its moving speed. The micro-Doppler of the target is the frequency change between the frequency of the signal received by the sensing receiver and the frequency of the signal emitted by the sensing transmitter when the target moves slightly (e.g., rotates or vibrates) with the sensing transmitter. That is, before determining the length of the time window, the sensing transmitter first sends at least one sensing signal to measure the Doppler, velocity, or micro-Doppler of the target, and then determines the length of the time window based on the measured Doppler, velocity, or micro-Doppler of the target.

[0168] The length of the time window is inversely proportional to the Doppler, velocity, or micro-Doppler of the target. In phase-based ranging or velocimetry, it is necessary to calculate the phase change of the sensed signal within the time window. For a time window of the same length, the cumulative phase change caused by a low-speed target is smaller and more easily drowned out by noise. For example, Table 3 shows the cumulative phase change at a frequency of 2.4 GHz within a 1 ms time window for different speeds. As can be seen from Table 3, for higher-speed targets, a 1 ms time window can cause a significant phase change, but for lower-to-medium speed targets, the phase change caused by a 1 ms time window is smaller and more easily drowned out by noise.

[0169] Table 3. Cumulative phase changes at different velocities

[0170] Therefore, for sensing targets with small Doppler, velocity, or micro-Doppler amplitudes, it is necessary to design a longer time window to maximize the phase change within the time window and prevent the phase change from being overwhelmed by noise.

[0171] Among them, when the parameter is at least one of "velocity range, Doppler range, micro-Doppler range, reciprocating frequency range", the length of the time window is determined according to the average value of the range; or, the length of the time window is determined according to the median of the range; or, the length of the time window is determined according to the maximum value of the range; or, the length of the time window is determined according to the minimum value of the range.

[0172] In some embodiments, the performance requirements of the sensing service include at least a feedback delay, which indicates the maximum time constraint from triggering the sensing service to receiving the sensing result. The feedback delay is used to determine at least one of the length of the time window, the initial position of the time window, and the end position of the time window. For example, the length of the time window should be less than the feedback delay.

[0173] In some embodiments, the second node receives first configuration information sent by the first node, the first configuration information being used to indicate the length of the time window.

[0174] In summary, the method provided in this application embodiment uses the first configuration information to configure the time window according to the characteristics and performance requirements of the sensing service. This allows the time window to not only meet the sensing requirements of the sensing service, but also ensures that both the sensing transmitting node and the sensing receiving node maintain the same device state when transmitting sensing signals within the time window. This minimizes the restriction on device adjustments and achieves optimal performance.

[0175] Configuration Method 2: At least configure the start / end position of the time window.

[0176] In some embodiments, the first node sends second configuration information to the second node, the second configuration information being used to indicate the end position of the first time window and / or the start position of the second time window.

[0177] In some embodiments, when the first node is a sensing sending node, the first node sends second configuration information to the second node.

[0178] In some embodiments, the second configuration information is used to indicate the end position of the first time window and / or the start position of the second time window; or, the second configuration information is used to indicate the end position of the i-th time window and / or the start position of the (i+1)-th time window, where i is a positive integer; or, the second configuration information is used to indicate the end position of the current time window and / or the start position of the next time window.

[0179] The second configuration information is triggered based on the device state of the sensing and transmitting node. For example, when the device state of the sensing and transmitting node changes, the sensing and transmitting node generates and sends the second configuration information.

[0180] In some embodiments, the second configuration information includes at least one of the following: carrier update information, which indicates the update information of the carrier corresponding to the sensing signal; bandwidth update information, which indicates the update information of the bandwidth corresponding to the sensing signal; power update information, which indicates the update information of the transmit power corresponding to the sensing signal; direction update information, which indicates the update information of the transmission direction corresponding to the sensing signal; antenna switching information, which indicates the switching information of the antenna corresponding to the sensing signal; and update delay, which indicates the transmission time of the update information.

[0181] The following is a brief introduction to the information that may be included in the second configuration information.

[0182] Carrier update information

[0183] Carrier update information is used to indicate the update information of the carrier corresponding to the sensed signal; that is, carrier update information includes at least one of the following: information on updating, activating, or deactivating the carrier. For example, the MAC CE for activating or deactivating the carrier.

[0184] Bandwidth update information

[0185] Bandwidth update information is used to indicate the updated bandwidth information corresponding to the sensed signal. That is, bandwidth update information includes at least one of the bandwidth information for updating, activating, or switching activation. For example, the bandwidth update information corresponding to a BWP switch (Bandwidth Part switch) can be RRC (Radio Resource Control) signaling or DCI (Downlink Control Information). Any signaling that triggers a BWP switch can be considered bandwidth update information, such as dedicated BWP switch activation signaling, or BWP switch triggering a BWP handover contained in scheduling signaling.

[0186] • Power update information

[0187] Power update information is used to indicate the updated transmit power corresponding to the sensed signal. The transmit power includes uplink transmit power and downlink transmit power. When the sensed transmitting node is a base station, the transmit power is the downlink transmit power; when the sensed transmitting node is a terminal, the transmit power is the uplink transmit power.

[0188] For example, the transmit power is the downlink transmit power, and the power update information is the power update information of SSB (Synchronization Signal and PBCH Block), CSI-RS (Channel State Information-Reference Signal) RE (Resource Element), and PDSCH (Physical Downlink Shared Channel) RE.

[0189] For example, the transmit power is the uplink transmit power. If the terminal receives a closed-loop power control adjustment instruction, the transmit power update information will be DCI format2-2 or DCI format2-3; or, the terminal performs an open-loop power control parameter adjustment. The open-loop power control parameter adjustment can be RRC configuration or physical layer indication, such as an open-loop power control parameter change triggered by a change in service priority.

[0190] • Direction update information

[0191] Direction update information is used to indicate the update information of the transmission direction corresponding to the sensed signal. For example, direction update information is at least one of TDD (Time Division Duplexing) configuration (including RRC configuration and dynamic SFI), SBFD (Subband Full Duplex) configuration (including RRC configuration and dynamic indication), and scheduling information.

[0192] Antenna switching information

[0193] Antenna switching information is used to indicate the switching information of the antenna corresponding to the sensed signal. For example, antenna switching information is a scheduling signaling that indicates a carrier change triggering antenna switching.

[0194] Update latency

[0195] Update delay is used to indicate the transmission time of update information. Update information includes at least one of the carrier update information, bandwidth update information, power update information, direction update information, and antenna switching information mentioned above. Transmission time refers to the time elapsed from the transmitting end to the receiving end for the update information to be received.

[0196] In some embodiments, the second node receives second configuration information sent by the first node, the second configuration information being used to indicate the end position of the first time window and / or the start position of the second time window.

[0197] The second configuration information (at least one of carrier update information, bandwidth update information, power update information, direction update information, antenna switching information, and update delay) is used to indicate the end position of the first time window and / or the start position of the second time window. That is, after the second node receives the second configuration information, it can determine the time indicated by the second configuration information as the end position of the current time window and the start position of the next time window.

[0198] For example, when performing a continuous tracking sensing service, when the sensing receiving node receives the first sensing signal, it is considered that the first sensing signal is within the first time window, and all sensing signals received thereafter are considered to be within the first time window; until the sensing receiving node receives the first second configuration information, the end position of the first time window and the start position of the second time window are determined according to the first second configuration information; sensing signals after the start position of the second time window are considered to be within the second time window; until the second second configuration information is received, the end position of the second time window and the start position of the third time window are determined according to the second second configuration information; ...; according to the i-th second configuration information, the end position of the i-th time window and the start position of the (i+1)-th time window are determined.

[0199] In summary, the method provided in this application uses second configuration information to indicate the end of the current time window and the beginning of the next time window during the transmission of the sensing signal. This approach is flexible and does not restrict the device changes required for the normal operation of the sensing transmitting node. Furthermore, the information used in the second configuration information is the signaling originally used to indicate update information during communication, meaning this approach does not incur additional signaling overhead.

[0200] Configuration Method 3: Configure the minimum length of the time window and the start / end position of the time window.

[0201] In some embodiments, the first node sends third configuration information to the second node, the third configuration information being used to indicate the shortest length of the time window; the first node sends second configuration information to the second node, the second configuration information being used to indicate the end position of the first time window, and / or, the start position of the second time window.

[0202] In some embodiments, the first node is a sensing sending node and / or a sensing management node. The first node sends third configuration information to the second node; the first node sends second configuration information to the second node. For example, the sensing sending node sends third configuration information to the second node; the sensing sending node sends second configuration information to the second node. Alternatively, the sensing management node sends third configuration information to the second node; the sensing sending node sends second configuration information to the second node.

[0203] The third configuration information is used to indicate the shortest length of the time window. The shortest length of the time window means that the random phase of the sensed signal is the same from the beginning of the time window until the shortest possible duration. That is, the sensed transmitting node will not change the device state within a shortest time window, which is the shortest possible time window starting from the beginning of the time window.

[0204] In some embodiments, the second configuration information is used to indicate the end position of the first time window and / or the start position of the second time window; or, the second configuration information is used to indicate the end position of the i-th time window and / or the start position of the (i+1)-th time window, where i is a positive integer; or, the second configuration information is used to indicate the end position of the current time window and / or the start position of the next time window.

[0205] The second configuration information is triggered based on the device state of the sensing and transmitting node. For example, when the device state of the sensing and transmitting node changes, the sensing and transmitting node generates and sends the second configuration information.

[0206] In some embodiments, the second configuration information includes at least one of the following: carrier update information, which indicates the update information of the carrier corresponding to the sensing signal; bandwidth update information, which indicates the update information of the bandwidth corresponding to the sensing signal; power update information, which indicates the update information of the transmit power corresponding to the sensing signal; direction update information, which indicates the update information of the transmission direction corresponding to the sensing signal; antenna switching information, which indicates the switching information of the antenna corresponding to the sensing signal; and update delay, which indicates the transmission time of the update information.

[0207] For details on the second configuration information, please refer to "Configuration Method 2: Configure at least the start / end position of the time window" above, and will not be repeated here.

[0208] In some embodiments, the second node receives third configuration information sent by the first node, the third configuration information being used to indicate the shortest length of the time window; the second node receives second configuration information sent by the first node, the second configuration information being used to indicate the end position of the first time window, and / or, the start position of the second time window.

[0209] As an example and not a limitation, at the start of the sensing service, the first node determines and sends the third configuration information to configure the minimum length of the time window based on the sensing service. Within the shortest time window, the sensing transmitting node will not change the random phase of the sensing signal (or will not change the device state); that is, the random phase of the sensing signal is the same at least within the shortest time window. After the shortest time window ends, a complete time window is defined as the period until the end position (or start position) indicated by the second configuration information is received.

[0210] In some embodiments, the third configuration information is further used to indicate the starting position of the first time window; or, the second configuration information is further used to indicate the starting position of the first time window; or, the first sensing signal is further used to indicate the starting position of the time window.

[0211] For example, after the sensing receiving node receives the third configuration information, it confirms the minimum length of the time window. After receiving the first sensing signal, it is assumed that the transmission time of the first sensing signal is the starting position of the first time window. Therefore, the length of the first time window is at least the minimum length indicated by the third configuration information. The final length of the first time window needs to be determined based on the second configuration information. That is, the first time window will only be finally determined after the second configuration information indicates the end position of the first time window.

[0212] In summary, the method provided in this application combines configuration method one and configuration method two. However, configuration method one means that the sensing and transmitting node cannot change the device state within the time window, which can easily lead to transmission constraints. Configuration method two, since it does not impose any restrictions on the sensing and transmitting node, may result in insufficient sensing measurement time due to the frequent changes in the device state of the sensing and transmitting node leading to an excessively short time window. Therefore, configuration method three, which combines configuration method one and configuration method two, uses third configuration information to define the minimum length of the time window, thus ensuring a sufficiently long time window. Furthermore, outside the minimum time window, second configuration information is used to indicate device changes, which to a certain extent ensures the flexibility of device state changes during transmission.

[0213] In some embodiments, after determining the time window configuration, the first node sends configuration information to the second node based on the time window configuration; the second node then determines the time window configuration based on the received configuration information. That is, steps 410 and 510 above can be implemented in combination with configuration method one, configuration method two, and configuration method three. That is, the configuration information is used to indicate the configuration of all time windows; the first node executes step 410 to determine the time window configuration, and indicates the determined time window configuration to the second node through the first configuration information in the manner shown in configuration method one; the second node then receives the first configuration information in the manner shown in configuration method one and executes step 510 to determine the time window configuration based on the first configuration information; or, the first node executes step 410 to determine the time window configuration, and indicates the determined time window configuration to the second node through the second configuration information in the manner shown in configuration method two; the second node then receives the second configuration information in the manner shown in configuration method two and executes step 510 to determine the time window configuration based on the second configuration information; or, the first node executes step 410 to determine the time window configuration, and indicates the determined time window configuration to the second node through the third configuration information and the second configuration information in the manner shown in configuration method three; the second node then receives the third configuration information and the second configuration information in the manner shown in configuration method three and executes step 510 to determine the time window configuration based on the third configuration information and the second configuration information. Alternatively, the configuration information is used to indicate a portion of the time window configuration, while the other portion is determined by the protocol. The first node executes step 410 to determine the time window configuration and, using the configuration method shown in step 1, indicates the determined portion of the time window configuration to the second node via the first configuration information. The second node then receives the first configuration information in the manner shown in step 1 and determines the time window configuration based on the first configuration information and the protocol. Alternatively, the first node executes step 410 to determine the time window configuration and, using the configuration method shown in step 2, indicates the determined portion of the time window configuration to the second node via the second configuration information. The second node then receives the second configuration information in the manner shown in step 2 and determines the time window configuration based on the second configuration information and the protocol. Alternatively, the first node executes step 410 to determine the time window configuration and, using the configuration method shown in step 3, indicates the determined portion of the time window configuration to the second node via the third and second configuration information. The second node then receives the third and second configuration information in the manner shown in step 3 and determines the time window configuration based on the third configuration information, the second configuration information, and the protocol.

[0214] Figure 10 illustrates a time window configuration determination apparatus provided in an exemplary embodiment of this application. This apparatus can be implemented as a first node, or as part of a first node, through software, hardware, or a combination of both. The apparatus includes:

[0215] The first determining module 810 is used to determine the time window configuration, wherein the time window configuration indicates that the time window is used to send at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0216] Here, random phase difference refers to the absolute value of the difference between the random phases of two sensed signals. At least two sensed signals having a random phase difference less than a threshold means that the absolute value of the random phase difference between any two sensed signals is less than the threshold.

[0217] In some embodiments, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitudes of the at least two sensing signals are the same or the amplitude difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, meaning the amplitude difference is only affected by hardware channels such as RF, antenna, and power amplifier, and also by the device states of the sensing transmitting and receiving nodes. The amplitude difference refers to the absolute value of the difference between the amplitudes of the two sensing signals.

[0218] In some embodiments, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude / random phase difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, i.e., the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier. Optionally, a threshold value is set for both amplitude and random phase; that is, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude difference is less than a first threshold value or the random phase difference is less than a second threshold value.

[0219] The threshold value can be defined by the protocol; or configured by the sensing sending node; or configured by the sensing receiving node; or configured by the sensing management node. If configured by the sensing sending node, the threshold value directly reflects the capabilities of the sensing sending node. If configured by the sensing receiving node, the threshold value reflects the requirements for the transmitted signal (or sensing signal) during sensing reception processing. The sensing management node can comprehensively consider the sensing service requirements and / or the capabilities of the sensing sending node and / or the requirements of the sensing receiving node to set a reasonable threshold value.

[0220] The time window is a continuous time period or time domain dimension, and its unit is at least one of frame, subframe, time slot, or symbol. Optionally, the duration of a frame is defined as 10 ms; a frame includes 10 subframes, and the duration of a subframe is 1 ms; a subframe includes i time slots, where i is a positive integer, and the value of i is related to the subcarrier spacing. The larger the subcarrier spacing, the shorter the actual duration of a time slot; a time slot includes 14 symbols, which can be OFDM symbols. It should be noted that the duration of a frame can also be defined as other durations, such as 15 ms, 20 ms, etc., and this application embodiment does not limit this. For example, the time window can be N symbols, half a time slot, 1 time slot, M time slots, 1 frame, K frames, 1 ms, 10 ms, L ms, etc.

[0221] In some embodiments, the time window configuration is used to indicate at least one time window. Optionally, when the time window configuration indicates at least two time windows, each of the at least two time windows is periodic.

[0222] In some embodiments, the time window configuration is used to indicate at least two time windows in which the random phase of the sensed signals is the same in each time window, and the random phases of the sensed signals in different time windows are the same or different. For example, the time window configuration indicates three time windows, where at least two sensed signals in time window 1 have a random phase of 0.5π, at least two sensed signals in time window 2 have a random phase of 0.75π, and at least two sensed signals in time window 3 have a random phase of 0.5π; that is, the random phases of the sensed signals in time window 1 and time window 3 are different, and the random phases of the sensed signals in time window 1 and time window 3 are the same.

[0223] In some embodiments, the time window configuration is agreed upon by the protocol; or, the time window configuration is determined based on the sensing service; or, the time window configuration is determined according to the protocol and the sensing service, that is, the first part of the time window configuration is agreed upon by the protocol, and the second part of the configuration is determined based on the sensing service.

[0224] Furthermore, if at least two sensed signals have the same random phase, meaning that the random phases corresponding to each sensed signal are identical, then the sensed signal receiving node can eliminate the random phase of the at least two sensed signals carried within that time window. The method for eliminating random phase (or calculating random phase) can be similar to the method for estimating Doppler frequency offset in the field of communications, such as finding the conjugate or correlation of the sensed signals. If the difference in random phase between at least two sensed signals is less than a threshold value, it can be approximately considered that the random phases corresponding to each sensed signal are identical; that is, the random phase can be eliminated by finding the conjugate or correlation. The same principle applies to the cases where the amplitudes of at least two sensed signals are identical and the amplitude difference is less than a threshold value; the random phase can also be eliminated by finding the conjugate or correlation.

[0225] In other words, the sensing receiving node processes the sensing signals based on a time window configuration. For at least two sensing signals within the same time window, the conjugate or correlation of the at least two sensing signals is calculated to eliminate the random phase of the at least two sensing signals; for at least two sensing signals from different time windows, after eliminating the random phase, they can be combined to improve the SNR, thereby improving the accuracy and precision of the sensing service.

[0226] In some embodiments, the determining device is a sensing transmission node; or, the determining device is a sensing management node.

[0227] In summary, the apparatus provided in this application, by determining the time window configuration so that the random phases of at least two sensing signals within the time window are the same, enables the elimination of the random phases of at least two sensing signals with the same random phase during the sensing process, thereby improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process.

[0228] Furthermore, the method for determining the random phase can be extended to methods for determining the amplitude that is only affected by changes in device state and other parameters that are only affected by changes in device state. The embodiments of this application use the method for determining the random phase as an example, but the scope of protection of this application is not limited thereto.

[0229] During the sensing process, in addition to the random phase introduced by device changes at the sensing transmitting node during signal transmission, random phase is also introduced by device changes at the sensing receiving node during signal reception. Therefore, the second node also needs to determine a time window configuration and ensure that the random phase of at least two sensing signals is not changed when receiving sensing signals within the time window indicated by the time window configuration. Figure 11 illustrates a time window configuration determination apparatus provided in an exemplary embodiment of this application. This apparatus can be implemented as a second node, or as part of a second node, through software, hardware, or a combination of both. The apparatus includes:

[0230] The second determining module 910 is used to determine the time window configuration, wherein the time window configuration indicates that the time window is used to receive at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0231] Here, random phase difference refers to the absolute value of the difference between the random phases of two sensed signals. At least two sensed signals having a random phase difference less than a threshold means that the absolute value of the random phase difference between any two sensed signals is less than the threshold.

[0232] In some embodiments, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitudes of the at least two sensing signals are the same or the amplitude difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, meaning the amplitude difference is only affected by hardware channels such as RF, antenna, and power amplifier, and also by the device states of the sensing transmitting and receiving nodes. The amplitude difference refers to the absolute value of the difference between the amplitudes of the two sensing signals.

[0233] In some embodiments, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude / random phase difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, i.e., the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier. Optionally, a threshold value is set for both amplitude and random phase; that is, the time window configuration indicates a time window for transmitting at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude difference is less than a first threshold value or the random phase difference is less than a second threshold value.

[0234] The threshold value can be defined by the protocol; or configured by the sensing sending node; or configured by the sensing receiving node; or configured by the sensing management node. If configured by the sensing sending node, the threshold value directly reflects the capabilities of the sensing sending node. If configured by the sensing receiving node, the threshold value reflects the requirements for the transmitted signal (or sensing signal) during sensing reception processing. The sensing management node can comprehensively consider the sensing service requirements and / or the capabilities of the sensing sending node and / or the requirements of the sensing receiving node to set a reasonable threshold value.

[0235] The time window is a continuous time period or time domain dimension, and its unit is at least one of frame, subframe, time slot, or symbol. Optionally, the duration of a frame is defined as 10 ms; a frame includes 10 subframes, and the duration of a subframe is 1 ms; a subframe includes i time slots, where i is a positive integer, and the value of i is related to the subcarrier spacing. The larger the subcarrier spacing, the shorter the actual duration of a time slot; a time slot includes 14 symbols, which can be OFDM symbols. It should be noted that the duration of a frame can also be defined as other durations, such as 15 ms, 20 ms, etc., and this application embodiment does not limit this. For example, the time window can be N symbols, half a time slot, 1 time slot, M time slots, 1 frame, K frames, 1 ms, 10 ms, L ms, etc.

[0236] In some embodiments, the time window configuration is used to indicate at least one time window. Optionally, when the time window configuration indicates at least two time windows, each of the at least two time windows is periodic.

[0237] In some embodiments, the time window configuration is agreed upon by the protocol; or, the time window configuration is determined based on the sensing service; or, the time window configuration is determined according to the protocol and the sensing service, that is, the first part of the time window configuration is agreed upon by the protocol, and the second part of the configuration is determined based on the sensing service.

[0238] Furthermore, at least two sensing signals must have the same random phase, meaning that the random phases corresponding to each sensing signal are identical. When at least two sensing signals have the same random phase, the sensing signal receiving node can eliminate the random phase of at least two sensing signals carried within that time window. The method for eliminating random phase (or calculating random phase) can be similar to the method for estimating Doppler frequency offset in the field of communications, such as finding the conjugate or correlation of the sensing signals.

[0239] In other words, the sensing receiving node processes the sensing signals based on a time window configuration. For at least two sensing signals within the same time window, the conjugate or correlation of the at least two sensing signals is calculated to eliminate the random phase of the at least two sensing signals; for at least two sensing signals from different time windows, after eliminating the random phase, they can be combined to improve the SNR, thereby improving the accuracy and precision of the sensing service.

[0240] In some embodiments, the determining device is a sensing receiving node.

[0241] In summary, the apparatus provided in this application, by determining the time window configuration so that the random phases of at least two sensing signals within the time window are the same, enables the elimination of the random phases of at least two sensing signals with the same random phase during the sensing process, thereby improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process.

[0242] The following section describes the parameters involved in time window configuration. Specifically, time window configuration includes at least one of the following: the length of the time window; the start position of the time window; the period of the time window; and the end position of the time window.

[0243] The length of the time window indicates the length of the corresponding time period or time domain dimension. In some embodiments, the length of the time window includes the unit of the time window, such as the length of the time window being N symbols, half a time slot, 1 time slot, M time slots, 1 frame, K frames, 1ms, 10ms, L ms, etc.; or, the length of the time window does not include the unit of the time window, and the unit of the time window is agreed upon by the protocol, such as the protocol agreeing that the unit of the time window is a time slot, and the length of the time window being 0.5, 1, M, etc.

[0244] In some embodiments, the starting position of the time window is a timestamp; or, the starting position of the time window is a point in time (or moment); or, the starting position of the time window is a time-domain unit. For example, the starting position of the time window is a specific timestamp "1718672665390"; or, the starting position of the time window is a point in time determined based on the start signal and the signal delay, such as the starting position being the time when the start signal is sent. For the sensing transmitting node, the starting position of its determined time window is the moment when it sent the start signal; for the sensing receiving node, since there may be a delay during signal transmission, the sensing receiving node needs to calculate the time when the start signal is sent based on the moment it receives the start signal and the signal delay, and use the time when the start signal is sent as the starting position of the time window; or, the starting position of the time window is the number of a time-domain unit.

[0245] In some embodiments, the period of a time window is used to indicate the length of the period corresponding to a time window. The period of a time window is greater than the length of the time window; and / or, the period of a time window is equal to the length of the time window. For example, the period of a time window is equal to the length of the time window, the length of the time window is 3ms, and the period of the time window is also 3ms, that is, the time windows are continuous, or the interval between time windows is 0; as shown in Figure 6, the length and period of the time window are both 3ms, that is, the end position of time window 1 is the start position of time window 2, the end position of time window 2 is the start position of time window 3, and the end position of time window 3 is the start position of time window 4; or, the period of a time window is greater than the length of the time window, the length of the time window is 3ms, and the period of the time window is 5ms; as shown in Figure 7, the start position of time window 2 is 2ms after the end position of time window 2; the start position of time window 3 is 2ms after the end position of time window 2.

[0246] In some embodiments, the end position of the time window is a timestamp; or, the end position of the time window is a point in time (or moment); or, the end position of the time window is a time-domain unit. For example, the end position of the time window is a specific timestamp "1718672665390"; or, the end position of the time window is a point in time determined based on the end signal and the signal delay, such as the end position being the time when the end signal was sent. For the sensing transmitting node, the end position of its determined time window is the time when it sent the end signal; for the sensing receiving node, since there may be a delay during signal transmission, the sensing receiving node needs to calculate the time when the end signal was sent based on the time when it received the end signal and the signal delay, and use the time when the end signal was sent as the end position of the time window; or, the end position of the time window is the number of a time-domain unit.

[0247] Figure 12 illustrates a configuration information transmission apparatus provided in an exemplary embodiment of this application. This apparatus can be implemented as a first node, or as part of a first node, through software, hardware, or a combination of both. The apparatus includes:

[0248] The sending module 1010 is used to send configuration information to the second node. The configuration information is used to indicate at least one piece of information in the time window. The time window is used to send at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0249] Here, random phase difference refers to the absolute value of the difference between the random phases of two sensed signals. At least two sensed signals having a random phase difference less than a threshold means that the absolute value of the random phase difference between any two sensed signals is less than the threshold.

[0250] In some embodiments, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitudes of the at least two sensing signals are the same or the amplitude difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, meaning the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier, and also by the device states of the sensing transmitting and receiving nodes. The amplitude difference refers to the absolute value of the difference between the amplitudes of the two sensing signals.

[0251] In some embodiments, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude / random phase difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, i.e., the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier. Optionally, a threshold value is set for both amplitude and random phase; that is, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude difference is less than a first threshold value or the random phase difference is less than a second threshold value.

[0252] The threshold value can be defined by the protocol; or configured by the sensing sending node; or configured by the sensing receiving node; or configured by the sensing management node. If configured by the sensing sending node, the threshold value directly reflects the capabilities of the sensing sending node. If configured by the sensing receiving node, the threshold value reflects the requirements for the transmitted signal (or sensing signal) during sensing reception processing. The sensing management node can comprehensively consider the sensing service requirements and / or the capabilities of the sensing sending node and / or the requirements of the sensing receiving node to set a reasonable threshold value.

[0253] The configuration information indicates at least one of the following: the length of the time window; the start position of the time window; the period of the time window; the end position of the time window; and an index value. The index value indicates the time window configuration corresponding to the time window; or, the index value indicates the time window configuration, and the time window configuration indicates at least one time window.

[0254] If at least two sensed signals have the same random phase, meaning that the random phases corresponding to each sensed signal are identical, then the sensed signal receiving node can eliminate the random phase of at least two sensed signals carried within that time window. The method for eliminating random phase (or calculating random phase) can be similar to the method for estimating Doppler frequency offset in the field of communications, such as finding the conjugate or correlation of the sensed signals. If the difference in random phase between at least two sensed signals is less than a threshold value, it can be approximately considered that the random phases corresponding to each sensed signal are identical; that is, the random phase can be eliminated by finding the conjugate or correlation. The same principle applies to the cases where the amplitudes of at least two sensed signals are identical and the amplitude difference is less than a threshold value; the random phase can also be eliminated by finding the conjugate or correlation.

[0255] In other words, the sensing receiving node processes the sensing signals based on the time window indicated by the configuration information. For at least two sensing signals within the same time window, the at least two sensing signals are conjugate or correlated to eliminate the random phase of the at least two sensing signals; for at least two sensing signals from different time windows, after eliminating the random phase, they can be combined to improve the SNR, thereby improving the accuracy and precision of the sensing service.

[0256] In some embodiments, the transmitting device is a sensing transmitting node; or, the transmitting device is a sensing management node.

[0257] In summary, the apparatus provided in this application embodiment allows the first node to send configuration information indicating a time window to inform the second node that the random phases of at least two sensing signals within the time window indicated by the configuration information are the same. This enables the elimination of the random phases of at least two sensing signals with the same random phase during the sensing process, thereby improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process.

[0258] Figure 13 illustrates a method for receiving configuration information provided in an exemplary embodiment of this application. The device can be implemented as a second node, or as part of a second node, through software, hardware, or a combination of both. The device includes:

[0259] The receiving module 1110 is used to receive configuration information sent by the first node. The configuration information is used to indicate at least one piece of information in the time window. The time window is used to receive at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

[0260] Here, random phase difference refers to the absolute value of the difference between the random phases of two sensed signals. At least two sensed signals having a random phase difference less than a threshold means that the absolute value of the random phase difference between any two sensed signals is less than the threshold.

[0261] In some embodiments, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitudes of the at least two sensing signals are the same or the amplitude difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, meaning the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier, and also by the device states of the sensing transmitting and receiving nodes. The amplitude difference refers to the absolute value of the difference between the amplitudes of the two sensing signals.

[0262] In some embodiments, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude / random phase difference is less than a threshold value. It is assumed here that the baseband signals of the at least two sensing signals are the same, i.e., the amplitude difference is only affected by hardware channels such as radio frequency, antenna, and power amplifier. Optionally, a threshold value is set for both amplitude and random phase; that is, the time window indicated by the configuration information is used to transmit at least two sensing signals, and the amplitude / random phase of the at least two sensing signals is the same or the amplitude difference is less than a first threshold value or the random phase difference is less than a second threshold value.

[0263] The threshold value can be defined by the protocol; or configured by the sensing sending node; or configured by the sensing receiving node; or configured by the sensing management node. If configured by the sensing sending node, the threshold value directly reflects the capabilities of the sensing sending node. If configured by the sensing receiving node, the threshold value reflects the requirements for the transmitted signal (or sensing signal) during sensing reception processing. The sensing management node can comprehensively consider the sensing service requirements and / or the capabilities of the sensing sending node and / or the requirements of the sensing receiving node to set a reasonable threshold value.

[0264] The configuration information indicates at least one of the following: the length of the time window; the start position of the time window; the period of the time window; the end position of the time window; and an index value. The index value indicates the time window configuration corresponding to the time window; or, the index value indicates the time window configuration, and the time window configuration indicates at least one time window.

[0265] If at least two sensing signals have the same random phase, meaning that the random phases corresponding to each sensing signal are identical, then the sensing signal receiving node can eliminate the random phase of the at least two sensing signals carried within that time window. The method for eliminating random phase (or calculating random phase) can be similar to the method for estimating Doppler frequency offset in the field of communications, such as finding the conjugate or correlation of the sensing signals. That is, the sensing receiving node processes the sensing signals based on the time window indicated by the configuration information. For at least two sensing signals within the same time window, finding the conjugate or correlation of the at least two sensing signals eliminates their random phase; for at least two sensing signals from different time windows, after eliminating the random phase, they can be combined to improve the SNR, thereby improving the accuracy and precision of the sensing service.

[0266] In some embodiments, the receiving device is a sensing receiving node.

[0267] In summary, the apparatus provided in this application determines at least two time windows with the same random phase by receiving configuration information, thereby enabling the elimination of the random phase of at least two sensing signals based on the same random phase during the sensing process, and improving the accuracy of phase-based ranging and velocity measurement methods during the sensing process.

[0268] When the first node sends configuration information to the second node to determine the time window (or time window configuration), the following configuration methods may exist.

[0269] Configuration Method 1: At least configure the length of the time window;

[0270] Configuration Method 2: At least configure the start / end position of the time window;

[0271] Configuration Method 3: Configure the minimum length of the time window and the start / end position of the time window.

[0272] The three configuration methods will be introduced below. It should be noted that the order of introduction does not affect the merits of each configuration method.

[0273] Configuration Method 1: At least configure the length of the time window.

[0274] In some embodiments, the sending module 1010 is used to send first configuration information to the second node, the first configuration information being used to indicate the length of the time window.

[0275] In some embodiments, the first configuration information includes at least one of the following: the length of the time window; the start position of the time window; the period of the time window; the end position of the time window; and an index value, which is used to indicate the time window configuration.

[0276] As an example and not a limitation, the first configuration information sent by the first node to the second node only includes the length of the time window, which is 3ms. Therefore, the time window is a 3ms period starting from the end time of the first configuration information (or the starting position of the time window). For the sensing sending node, the end time of the first configuration information is the time when the signal carrying the first configuration information ends transmission; for the sensing receiving node, it is the time when the signal carrying the first configuration information ends reception.

[0277] For example, the first configuration information includes the start position and length of the time window. The start position of the time window is a timestamp, and the specific time window can be determined based on this timestamp and the length of the time window. When the sensing signal is transmitted, it carries the timestamp of when the sensing signal began to be transmitted, so whether the sensing signal is within the time window can be determined based on the timestamp carried by the sensing signal. Alternatively, the first configuration information includes the start position, length, and period of the time window. Alternatively, the first configuration information includes the start and end positions of the time window; that is, the first configuration information uses the start and end positions of the time window to indicate the length of the time window. Alternatively, the first configuration information includes the start and end positions of the time window and the period of the time window. Alternatively, the first configuration information includes the length and period of the time window. At this point, the starting point of the time window is the end time of the first configuration information. The length and period of the time window are both 3ms. Therefore, the first time window starts counting from the end time of the first configuration information and is spaced 3ms apart. The starting position of the second time window is the end position of the first time window, and so on. At least two time windows can be determined based on the first configuration information.

[0278] In some embodiments, the first node and the second node store at least two sets of time window configurations, each set of time window configurations corresponding to an index value. The at least two sets of time window configurations are agreed upon by the protocol; or, the at least two sets of time window configurations are pre-configured, for example, the sensing transmitting node determines at least two sets of time window configurations based on sensing services and sends these at least two sets of time window configurations to the sensing receiving node. Optionally, the at least two sets of time window configurations include the same information type; or, the at least two sets of time window configurations include different information types.

[0279] For example, at least two sets of time window configurations include the same type of information, and each set of time window configurations includes the length and period of the time window. The three sets of time window configurations stored in the first node and the second node are shown in Table 1 above.

[0280] For example, at least two sets of time window configurations include different types of information. Each set of time window configurations is applicable to different sensing services. For instance, the time window configuration corresponding to index value "00" is applicable to sensing services that require only one sensing measurement, while the time window configurations corresponding to index values ​​"01" and "10" are applicable to sensing services that require repeated accumulation or continuous tracking (such as health status tracking, environmental parameter detection, etc.). The three sets of time window configurations stored in the first and second nodes are shown in Table 2 above.

[0281] In some embodiments, the sensing sending node and sensing receiving node are in a scenario requiring constant sensing. The sensing sending node determines three sets of time window configurations based on the sensing services of the previous n days, pre-configures these time window configurations for the sensing receiving node, and agrees that index values ​​will be used to indicate the time window configuration thereafter. Alternatively, the sensing system includes a sensing management node. Based on the sensing services of the previous n days, the sensing management node integrates the three most commonly used sets of time window configurations and sends them to the sensing sending node and sensing receiving node. It agrees that index values ​​will be used preferentially to indicate the time window configuration, and the sensing sending node will only re-determine and send the time window configuration if the pre-configured time window configuration does not conform to the sensing services.

[0282] The following section demonstrates how to determine the various pieces of information in the first configuration information based on the perception service.

[0283] In some embodiments, the first configuration information is determined based on at least one of the following: characteristics of the sensing service; performance requirements of the sensing service. Wherein, the sensing service is the sensing service corresponding to the sensing signal. That is, the first node receives the characteristics of the sensing service and / or the performance requirements of the sensing service. Optionally, the characteristics of the sensing service and / or the performance requirements of the sensing service are sent by the sensing management node; or, the characteristics of the sensing service and / or the performance requirements of the sensing service are sent by the sensing client (the initiator of the sensing service); or, the characteristics of the sensing service and / or the performance requirements of the sensing service are sent by both the sensing management node and the sensing client.

[0284] In some embodiments, the characteristics of the sensing service include at least one of the following: the periodicity of the sensing service; the motion pattern of the sensing target.

[0285] The periodicity of the sensing service is used to determine the period of the time window. When the sensing service is periodic, the period of the time window is set in the first configuration information based on the period of the sensing service.

[0286] The parameters corresponding to the motion law of the perceived target include, but are not limited to: velocity, Doppler, micro-Doppler, velocity range, Doppler range, micro-Doppler range, and reciprocating frequency range. The motion law of the perceived target is used to determine at least one of the following: the length of the time window, the initial position of the time window, and the end position of the time window.

[0287] For example, the length of the time window (or the start and end positions of the time window) is determined based on at least one of the following: the Doppler of the target; the velocity of the target; or the micro-Doppler of the target. Wherein, the target is the target sensed by the sensing signal; or, the target is the target of this sensing service; or, the target is the target that the sensing signal intends to sense. The Doppler of the target is the frequency change between the frequency of the signal received by the sensing receiver and the frequency of the signal emitted by the sensing transmitter when the target moves relative to the sensing transmitter. The velocity of the target is its moving speed. The micro-Doppler of the target is the frequency change between the frequency of the signal received by the sensing receiver and the frequency of the signal emitted by the sensing transmitter when the target moves slightly (e.g., rotates or vibrates) with the sensing transmitter. That is, before determining the length of the time window, the sensing transmitter first sends at least one sensing signal to measure the Doppler, velocity, or micro-Doppler of the target, and then determines the length of the time window based on the measured Doppler, velocity, or micro-Doppler of the target.

[0288] The length of the time window is inversely proportional to the Doppler, velocity, or micro-Doppler of the target. In phase-based ranging or velocimetry, it is necessary to calculate the phase change of the sensed signal within the time window. For a given time window length, the cumulative phase change from a low-speed target is smaller and more easily drowned out by noise. For example, Table 3 shows the cumulative phase change at 2.4 GHz within a 1 ms time window for different speeds. As can be seen from Table 3, a 1 ms time window can induce a significant phase change for higher-speed targets, but for lower-to-medium speed targets, the phase change is smaller and more easily drowned out by noise. Therefore, for targets with small Doppler, velocity, or micro-Doppler, a longer time window needs to be designed to maximize the phase change within the window and prevent it from being drowned out by noise.

[0289] Among them, when the parameter is at least one of "velocity range, Doppler range, micro-Doppler range, reciprocating frequency range", the length of the time window is determined according to the average value of the range; or, the length of the time window is determined according to the median of the range; or, the length of the time window is determined according to the maximum value of the range; or, the length of the time window is determined according to the minimum value of the range.

[0290] In some embodiments, the performance requirements of the sensing service include at least feedback latency, which is used to indicate the maximum time constraint from triggering the sensing service to receiving the sensing result.

[0291] The feedback delay is used to determine at least one of the following: the length of the time window, the initial position of the time window, and the end position of the time window.

[0292] For example, the length of the time window should be less than the feedback delay.

[0293] In some embodiments, the receiving module 1110 is configured to receive first configuration information sent by the first node, the first configuration information being used to indicate the length of the time window.

[0294] In summary, the apparatus provided in this application embodiment configures the time window using the first configuration information in a targeted manner according to the characteristics and performance requirements of the sensing service. This allows the time window to not only meet the sensing requirements of the sensing service, but also ensures that both the sensing transmitting node and the sensing receiving node maintain the same device state when transmitting the sensing signal within the time window. This minimizes the restriction on device adjustments and achieves optimal performance.

[0295] Configuration Method 2: At least configure the start / end position of the time window.

[0296] In some embodiments, the sending module 1010 is used to send second configuration information to the second node, the second configuration information being used to indicate the end position of the first time window and / or the start position of the second time window.

[0297] In some embodiments, when the transmitting device is a sensing transmitting node, the transmitting module 1010 is used to transmit second configuration information to the second node.

[0298] In some embodiments, the second configuration information is used to indicate the end position of the first time window and / or the start position of the second time window; or, the second configuration information is used to indicate the end position of the i-th time window and / or the start position of the (i+1)-th time window, where i is a positive integer; or, the second configuration information is used to indicate the end position of the current time window and / or the start position of the next time window. The second configuration information is triggered based on the device state of the sensing and transmitting node. For example, when the device state of the sensing and transmitting node changes, the sensing and transmitting node generates and transmits the second configuration information.

[0299] In some embodiments, the second configuration information includes at least one of the following: carrier update information, which indicates the update information of the carrier corresponding to the sensing signal; bandwidth update information, which indicates the update information of the bandwidth corresponding to the sensing signal; power update information, which indicates the update information of the transmit power corresponding to the sensing signal; direction update information, which indicates the update information of the transmission direction corresponding to the sensing signal; antenna switching information, which indicates the switching information of the antenna corresponding to the sensing signal; and update delay, which indicates the transmission time of the update information.

[0300] The following is a brief introduction to the information that may be included in the second configuration information.

[0301] Carrier update information

[0302] Carrier update information is used to indicate the update information of the carrier corresponding to the sensed signal; that is, carrier update information includes at least one of the following: information on updating, activating, or deactivating the carrier. For example, the MAC CE for activating or deactivating the carrier.

[0303] Bandwidth update information

[0304] Bandwidth update information is used to indicate the update information of the bandwidth corresponding to the sensing signal. That is, bandwidth update information includes at least one of the bandwidth information for updating, activating, or switching activation. For example, the bandwidth update information corresponding to a BWP switch can be RRC signaling or DCI. Any signaling that triggers a BWP switch can be considered bandwidth update information, such as dedicated BWP switch activation signaling, or BWP switch triggering BWP handover contained in scheduling signaling.

[0305] • Power update information

[0306] Power update information is used to indicate the updated transmit power corresponding to the sensed signal. The transmit power includes uplink transmit power and downlink transmit power. When the sensed transmitting node is a base station, the transmit power is the downlink transmit power; when the sensed transmitting node is a terminal, the transmit power is the uplink transmit power.

[0307] For example, the transmit power is the downlink transmit power, and the power update information is the power update information of SSB, CSI-RS RE, and PDSCH RE.

[0308] For example, the transmit power is the uplink transmit power. If the terminal receives a closed-loop power control adjustment instruction, the transmit power update information will be DCI format2-2 or DCI format2-3; or, the terminal performs an open-loop power control parameter adjustment. The open-loop power control parameter adjustment can be RRC configuration or physical layer indication, such as an open-loop power control parameter change triggered by a change in service priority.

[0309] • Direction update information

[0310] Direction update information is used to indicate the update information of the transmission direction corresponding to the sensed signal. For example, direction update information is at least one of TDD configuration (including RRC configuration and dynamic SFI), SBFD configuration (including RRC configuration and dynamic indication), and scheduling information.

[0311] Antenna switching information

[0312] Antenna switching information is used to indicate the switching information of the antenna corresponding to the sensed signal. For example, antenna switching information is a scheduling signaling that indicates a carrier change triggering antenna switching.

[0313] Update latency

[0314] Update delay is used to indicate the transmission time of update information. Update information includes at least one of the carrier update information, bandwidth update information, power update information, direction update information, and antenna switching information mentioned above. Transmission time refers to the time elapsed from the transmitting end to the receiving end for the update information to be received.

[0315] In some embodiments, the receiving module 1110 is configured to receive second configuration information sent by the first node, the second configuration information being used to indicate the end position of the first time window and / or the start position of the second time window.

[0316] The second configuration information (at least one of carrier update information, bandwidth update information, power update information, direction update information, antenna switching information, and update delay) is used to indicate the end position of the first time window and / or the start position of the second time window. That is, after the second node receives the second configuration information, it can determine the time indicated by the second configuration information as the end position of the current time window and the start position of the next time window.

[0317] For example, when performing a continuous tracking sensing service, when the sensing receiving node receives the first sensing signal, it is considered that the first sensing signal is within the first time window, and all sensing signals received thereafter are considered to be within the first time window; until the sensing receiving node receives the first second configuration information, the end position of the first time window and the start position of the second time window are determined according to the first second configuration information; sensing signals after the start position of the second time window are considered to be within the second time window; until the second second configuration information is received, the end position of the second time window and the start position of the third time window are determined according to the second second configuration information; ...; according to the i-th second configuration information, the end position of the i-th time window and the start position of the (i+1)-th time window are determined.

[0318] In summary, the apparatus provided in this application uses second configuration information to indicate the end of the current time window and the beginning of the next time window during the transmission of sensing signals. This method is flexible and does not limit the device changes required for the normal operation of the sensing transmitting node. Furthermore, the information used in the second configuration information is the signaling originally used to indicate update information during communication, meaning this method does not incur additional signaling overhead.

[0319] Configuration Method 3: Configure the minimum length of the time window and the start / end position of the time window.

[0320] In some embodiments, the sending module 1010 is used to send third configuration information to the second node, the third configuration information being used to indicate the shortest length of the time window; the first node sends second configuration information to the second node, the second configuration information being used to indicate the end position of the first time window, and / or the start position of the second time window.

[0321] In some embodiments, the first node is a sensing sending node and / or a sensing management node. The first node sends third configuration information to the second node; the first node sends second configuration information to the second node. For example, the sensing sending node sends third configuration information to the second node; the sensing sending node sends second configuration information to the second node. Alternatively, the sensing management node sends third configuration information to the second node; the sensing sending node sends second configuration information to the second node.

[0322] The third configuration information is used to indicate the shortest length of the time window. The shortest length of the time window means that the random phase of the sensed signal is the same from the beginning of the time window until the shortest possible duration. That is, the sensed transmitting node will not change the device state within a shortest time window, which is the shortest possible time window starting from the beginning of the time window.

[0323] In some embodiments, the second configuration information is used to indicate the end position of the first time window and / or the start position of the second time window; or, the second configuration information is used to indicate the end position of the i-th time window and / or the start position of the (i+1)-th time window, where i is a positive integer; or, the second configuration information is used to indicate the end position of the current time window and / or the start position of the next time window.

[0324] The second configuration information is triggered based on the device state of the sensing and transmitting node. For example, when the device state of the sensing and transmitting node changes, the sensing and transmitting node generates and sends the second configuration information.

[0325] In some embodiments, the second configuration information includes at least one of the following: carrier update information, which indicates the update information of the carrier corresponding to the sensing signal; bandwidth update information, which indicates the update information of the bandwidth corresponding to the sensing signal; power update information, which indicates the update information of the transmit power corresponding to the sensing signal; direction update information, which indicates the update information of the transmission direction corresponding to the sensing signal; antenna switching information, which indicates the switching information of the antenna corresponding to the sensing signal; and update delay, which indicates the transmission time of the update information.

[0326] For details on the second configuration information, please refer to "Configuration Method 2: Configure at least the start / end position of the time window" above, and will not be repeated here.

[0327] In some embodiments, the receiving module 1110 is configured to receive third configuration information sent by the first node, the third configuration information being used to indicate the shortest length of the time window; the second node receives second configuration information sent by the first node, the second configuration information being used to indicate the end position of the first time window, and / or, the start position of the second time window.

[0328] As an example and not a limitation, at the start of the sensing service, the first node determines and sends the third configuration information to configure the minimum length of the time window based on the sensing service. Within the shortest time window, the sensing transmitting node will not change the random phase of the sensing signal (or will not change the device state); that is, the random phase of the sensing signal is the same at least within the shortest time window. After the shortest time window ends, a complete time window is defined as the period until the end position (or start position) indicated by the second configuration information is received.

[0329] In some embodiments, the third configuration information is further used to indicate the starting position of the first time window; or, the second configuration information is further used to indicate the starting position of the first time window; or, the first sensing signal is further used to indicate the starting position of the time window.

[0330] For example, after the sensing receiving node receives the third configuration information, it confirms the minimum length of the time window. After receiving the first sensing signal, it is assumed that the transmission time of the first sensing signal is the starting position of the first time window. Therefore, the length of the first time window is at least the minimum length indicated by the third configuration information. The final length of the first time window needs to be determined based on the second configuration information. That is, the first time window will only be finally determined after the second configuration information indicates the end position of the first time window.

[0331] In summary, the apparatus provided in this application combines configuration method one and configuration method two. However, configuration method one means that the sensing and transmitting node cannot change the device state within the time window, which can easily lead to transmission constraints. Configuration method two, since it does not impose any restrictions on the sensing and transmitting node, may result in insufficient sensing measurement time due to the frequent changes in the device state of the sensing and transmitting node leading to an excessively short time window. Therefore, configuration method three, which combines configuration method one and configuration method two, uses third configuration information to define the minimum length of the time window, thus ensuring a sufficiently long time window. Furthermore, outside the minimum time window, second configuration information is used to indicate device changes, which to a certain extent ensures the flexibility of device state changes during transmission.

[0332] Figure 14 shows a schematic diagram of the structure of a first node provided in an exemplary embodiment of this application. The first node 1200 can be used to execute the method steps performed by the first node in the above embodiments. The first node 1200 may include a processor 1201, a transceiver 1202, and a memory 1203. The processor 1201 can be used to control transmission and / or reception, such as to implement the functions of the first determining module 810 described above. The transceiver 1202 can be used to implement transmission and / or reception functions, such as to implement the functions of the transmission module 1010 described above.

[0333] The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules.

[0334] The transceiver 1202 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0335] The memory 1203 can be connected to the processor 1201 and the transceiver 1202.

[0336] The memory 1203 can be used to store a computer program executed by the processor, and the processor 1201 is used to execute the computer program to implement the various steps in the above method embodiments.

[0337] Furthermore, the memory 1203 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0338] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0339] Figure 15 shows a schematic diagram of the structure of a second node provided in an exemplary embodiment of this application. This second node 1300 can be used to execute the method steps performed by the second node in the above embodiments. The second node 1300 may include a processor 1301, a transceiver 1302, and a memory 1303. The processor 1301 can be used to control transmission and / or reception, such as to implement the function of the second determining module 910 described above. The transceiver 1302 can be used to implement transmission and / or reception functions, such as to implement the function of the receiving module 1110 described above.

[0340] The processor 1301 includes one or more processing cores. The processor 1301 executes various functional applications and information processing by running software programs and modules.

[0341] The transceiver 1302 may include a receiver and a transmitter. For example, the receiver and transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0342] The memory 1303 can be connected to the processor 1301 and the transceiver 1302.

[0343] The memory 1303 can be used to store a computer program executed by the processor, and the processor 1301 is used to execute the computer program to implement the various steps in the above method embodiments.

[0344] Furthermore, the memory 1303 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory, erasable programmable read-only memory, static on-demand memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0345] For details not described in this embodiment, please refer to the embodiments above, which will not be repeated here.

[0346] This application embodiment also provides a computer-readable storage medium storing a computer program for execution by a processor to implement the above-described method for determining the time window configuration on the first node side, and / or the method for determining the time window configuration on the second node side, and / or the method for sending configuration information, and / or the method for receiving configuration information.

[0347] In some embodiments, the computer-readable storage medium may include ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives), or optical disc, etc. The random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0348] This application embodiment also provides a chip, which includes programmable logic circuits and / or program instructions, for implementing the above-mentioned method for determining the time window configuration on the first node side, and / or the method for determining the time window configuration on the second node side, and / or the method for sending configuration information, and / or the method for receiving configuration information when the chip is running.

[0349] This application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. A processor reads from the computer-readable storage medium and executes the computer program to implement the above-mentioned method for determining the time window configuration on the first node side, and / or the method for determining the time window configuration on the second node side, and / or the method for sending configuration information, and / or the method for receiving configuration information.

[0350] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0351] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0352] In some embodiments of this application, "predefined" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including a first node and a second node). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0353] In some embodiments of this application, "protocol" may refer to standard protocols in the field of communications, such as LTE protocol, NR protocol and related protocols applied to future communication systems, and this application does not limit it.

[0354] In this article, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0355] In this article, "greater than or equal to" can mean greater than or equal to, and "less than or equal to" can mean less than or equal to.

[0356] Furthermore, the step numbers described herein are merely illustrative of one possible execution order between steps. In some other embodiments, the steps may not be executed in the order of their numbers, such as two steps with different numbers being executed simultaneously, or two steps with different numbers being executed in the reverse order of the illustration. This application does not limit this.

[0357] Those skilled in the art will recognize that the functions described in the embodiments of this application in one or more of the above examples 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 code on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any medium that facilitates the transfer of a computer program from one place to another. Storage media can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0358] The above are merely exemplary embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

1. A method for determining a time window configuration, characterized in that, The method is executed by the first node, and the method includes: A time window configuration is determined, wherein the time window configuration indicates a time window for transmitting at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

2. The method according to claim 1, characterized in that, The time window configuration includes at least one of the following: the length of the time window; the start position of the time window; the period of the time window; and the end position of the time window.

3. The method according to claim 1 or 2, characterized in that, The method further includes sending first configuration information to a second node, wherein the first configuration information is used to indicate the length of the time window.

4. The method according to claim 1 or 2, characterized in that, The method further includes sending second configuration information to a second node, the second configuration information being used to indicate the end position of the first time window and / or the start position of the second time window.

5. The method according to claim 1 or 2, characterized in that, The method further includes: sending third configuration information to the second node, the third configuration information being used to indicate the shortest length of the time window; Send second configuration information to the second node, the second configuration information being used to indicate the end position of the first time window and / or the start position of the second time window.

6. The method according to claim 3, characterized in that, The first configuration information includes at least one of the following: the length of the time window; the start position of the time window; the period of the time window; the end position of the time window; and an index value, which is used to indicate the time window configuration.

7. The method according to claim 3 or 6, characterized in that, The first configuration information is determined based on at least one of the following: the characteristics of the sensing service; the performance requirements of the sensing service; wherein the sensing service is the sensing service corresponding to the sensing signal.

8. The method according to claim 7, characterized in that, The characteristics of the sensing service include at least one of the following: the periodicity of the sensing service; the motion pattern of the sensing target.

9. The method according to claim 7 or 8, characterized in that, The performance requirements of the sensing service include feedback latency, which is used to indicate the maximum time constraint from triggering the sensing service to receiving the sensing result.

10. The method according to claim 4 or 5, characterized in that, The second configuration information is triggered based on the device status of the sensing and transmitting node.

11. The method according to claim 4, 5, or 10, characterized in that, The second configuration information includes at least one of the following: carrier update information, which indicates the update information of the carrier corresponding to the sensing signal; and bandwidth update information, which indicates the update information of the bandwidth corresponding to the sensing signal. Power update information, which is used to indicate the update information of the transmission power corresponding to the sensing signal; Direction update information, which is used to indicate the update information of the transmission direction corresponding to the sensing signal; Antenna switching information, which is used to indicate the switching information of the antenna corresponding to the sensing signal; Update delay, which is used to indicate the transmission time of the update information.

12. The method according to any one of claims 1 to 11, characterized in that, The first node is a sensing transmitting node, or the first node is a sensing management node that manages the sensing transmitting node; the second node is a sensing receiving node; during the process of the sensing transmitting node transmitting the at least two sensing signals in the time window, the device state of the sensing transmitting node remains unchanged; during the process of the sensing receiving node receiving the at least two sensing signals in the time window, the device state of the sensing receiving node remains unchanged.

13. A method for sending configuration information, characterized in that, The method is executed by the first node, and the method includes: The configuration information is sent to the second node. The configuration information is used to indicate at least one piece of information in the time window. The time window is used to send at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

14. A method for determining a time window configuration, characterized in that, The method is executed by the second node, and the method includes: A time window configuration is determined, wherein the time window configuration indicates a time window for receiving at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

15. The method according to claim 14, characterized in that, The time window configuration includes at least one of the following: the length of the time window; the start position of the time window; the period of the time window; and the end position of the time window.

16. The method according to claim 14 or 15, characterized in that, The method further includes: receiving first configuration information sent by a first node, wherein the first configuration information is used to indicate the length of the time window.

17. The method according to claim 14 or 15, characterized in that, The method further includes: receiving second configuration information sent by the first node, the second configuration information being used to indicate the end position of the first time window and / or the start position of the second time window.

18. The method according to claim 14 or 15, characterized in that, The method further includes: Receive third configuration information sent by the first node, the third configuration information being used to indicate the shortest length of the time window; The system receives second configuration information sent by the first node, the second configuration information being used to indicate the end position of the first time window. And / or, the starting position of the second time window.

19. The method according to claim 16, characterized in that, The first configuration information includes at least one of the following: the length of the time window; the start position of the time window; the period of the time window; the end position of the time window; and an index value, which is used to indicate the configuration information of the time window.

20. The method according to claim 16 or 19, characterized in that, The first configuration information is determined based on at least one of the following: the characteristics of the sensing service; the performance requirements of the sensing service; wherein the sensing service is the sensing service corresponding to the sensing signal.

21. The method according to claim 20, characterized in that, The characteristics of the sensing service include at least one of the following: the periodicity of the sensing service; the motion pattern of the sensing target.

22. The method according to claim 20 or 21, characterized in that, The performance requirements of the sensing service include at least a feedback delay, which is used to indicate the maximum time constraint from triggering the sensing service to receiving the sensing result.

23. The method according to claim 17 or 18, characterized in that, The second configuration information is triggered based on the device status of the sensing and transmitting node.

24. The method according to claim 17, 18, or 23, characterized in that, The second configuration information includes at least one of the following: carrier update information, which indicates the update information of the carrier corresponding to the sensing signal; and bandwidth update information, which indicates the update information of the bandwidth corresponding to the sensing signal. Power update information, which is used to indicate the update information of the transmission power corresponding to the sensing signal; Direction update information, which is used to indicate the update information of the transmission direction corresponding to the sensing signal; Antenna switching information, which is used to indicate the switching information of the antenna corresponding to the sensing signal; Update delay, which is used to indicate the transmission time of the update information.

25. The method according to any one of claims 14 to 24, characterized in that, The first node is a sensing transmitting node, or the first node is a sensing management node that manages the sensing transmitting node; the second node is a sensing receiving node; during the process of the sensing transmitting node transmitting the at least two sensing signals in the time window, the device state of the sensing transmitting node remains unchanged; during the process of the sensing receiving node receiving the at least two sensing signals in the time window, the device state of the sensing receiving node remains unchanged.

26. A method for receiving configuration information, characterized in that, The method is executed by the second node, and the method includes: The system receives configuration information sent by a first node. The configuration information is used to indicate at least one piece of information for a time window. The time window is used to receive at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

27. A device for determining a time window configuration, characterized in that, The device includes: The first determining module is used to determine a time window configuration, wherein the time window configuration indicates a time window for sending at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

28. A device for transmitting configuration information, characterized in that, The device includes: The sending module is used to send configuration information to the second node. The configuration information is used to indicate at least one piece of information in a time window. The time window is used to send at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

29. A device for determining a time window configuration, characterized in that, The device includes: The second determining module is used to determine a time window configuration, wherein the time window configuration indicates a time window for receiving at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

30. A device for receiving configuration information, characterized in that, The device includes: The receiving module is used to receive configuration information sent by the first node. The configuration information is used to indicate at least one piece of information in a time window. The time window is used to receive at least two sensing signals, and the random phases of the at least two sensing signals are the same or the random phase difference is less than a threshold value.

31. A first node, characterized in that, The first node includes: A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method for determining a time window configuration as described in any one of claims 1 to 12, and / or the method for transmitting configuration information as described in claim 13.

32. A second node, characterized in that, The second node includes: A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method for determining a time window configuration as described in any one of claims 14 to 25, and / or the method for receiving configuration information as described in claim 26.

33. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one program, which is loaded and executed by a processor to implement the method for determining the time window configuration as described in any one of claims 1 to 12, and / or the method for sending configuration information as described in claim 13, and / or the method for determining the time window configuration as described in any one of claims 14 to 25, and / or the method for receiving configuration information as described in claim 26.

34. A chip, characterized in that, The chip includes programmable logic circuits and / or program instructions, which, when the chip is running on the first node, are used to implement the method for determining the time window configuration as described in any one of claims 1 to 12, and / or the method for sending configuration information as described in claim 13, and / or the method for determining the time window configuration as described in any one of claims 14 to 25, and / or the method for receiving configuration information as described in claim 26.

35. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium. A processor retrieves the computer instructions from the computer-readable storage medium and executes the computer instructions to implement the method for determining a time window configuration as described in any one of claims 1 to 12, and / or the method for sending configuration information as described in claim 13, and / or the method for determining a time window configuration as described in any one of claims 14 to 25, and / or the method for receiving configuration information as described in claim 26.

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