Method, apparatus, and system for signal configuration
By configuring distinct sensing signals with varying parameters for different stages, the method optimizes power usage and reduces interference in wireless communication systems, addressing the inefficiencies of uniform signal usage in sensing agents.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-03-26
AI Technical Summary
The existing signal configuration for sensing agents in wireless communication systems leads to undesirable energy consumption due to the use of uniform sensing signals across different scenarios, which is inefficient and contributes to interference.
A method for configuring distinct sensing signals with varying parameters such as bandwidth, start offset frequency, sub-channels, sensing period, and waveform types for different stages of sensing to optimize power usage and reduce interference.
This approach allows for power-saving and interference reduction by using tailored sensing signals for different stages of sensing, enhancing the efficiency of sensing agents.
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Figure CN2025079781_26032026_PF_FP_ABST
Abstract
Description
METHOD, APPARATUS, AND SYSTEM FOR SIGNAL CONFIGURATION
[0001] This application claims priority to United State of America Provisional Application No. 63 / 696,245, filed on September 18, 2024, and entitled “Method, Apparatus, and System for Low-power Sensing Agent Waveform Configuration” , which is incorporated herein by reference in its entirety.TECHNICAL FIELD
[0002] The present disclosure relates generally to wireless communication. Particularly, it relates to a method, an apparatus, and a system for signal configuration.BACKGROUND
[0003] Position information of a user equipment (UE) is used in a cellular communication network to improve various performance metrics for the network. In the future, a sensing system may be used to help gather the position information of the UE. It is desirable to integrate sensing and communication into one system. For sensing purpose, it is expected to have a distributed network node which is capable of performing sensing. The distributed network node can be referred to as a sensing agent (SA) to perform sensing. The SA is different from the UE in the present communication system. The signal configuration of the UE may not be suitable for the SA in the future system. For different sensing purposes, if the SA conducts the sensing process with the same signal, it will contribute to undesirable energy consumption of the SA.
[0004] Therefore, how to design a sensing signal for the SA to save power is needed to be solved in this application.SUMMARY
[0005] This present disclosure provides a method, an apparatus, and a system for signal configuration used to save power for a sensing agent.
[0006] According to a first aspect, a method for signal configuration is described. The method may be applied at a first device, for example, a first device or a module in a first device, a circuit or a chip (for example, a modem (modem) chip, also referred to as a baseband (baseband) chip, or a system on chip (system on chip, SoC) chip or a system in package (system in package, SIP) chip that includes a modem core) that is responsible for a communication function in a first device. For example, the method is applied to a first device.
[0007] In this method, the first device obtains first information indicative of configuration of a first sensing signal used for a first stage sensing. The first device obtains second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0008] In some implementations, the first device is used to conduct sensing process. For example, the first device can be referred to as a sensing agent or a sensing agent head. This application does not limit the name of the first device.
[0009] In some implementations, the first stage sensing can be referred to as primary sensing and the second stage sensing can be referred to as advanced sensing. In other words, a sensing assignment of the first stage sensing is easier than a sensing assignment of the second stage sensing. For example, the first stage sensing is used to sense whether a new object appears in a sensing coverage and the second stage sensing is used to sense details of the new object.
[0010] The obtaining action of the first device can be referred to as obtaining information pre-configured in the first device. Or the obtaining action of the first device can be also be referred to as receiving information from another device.
[0011] In a possible implementation, the first device receives first information indicative of configuration of a first sensing signal used for a first stage sensing. The first device receives second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0012] In other words, the configuration of the first sensing signal and the configuration of the second sensing signal can be indicated by a second device. For example, the first device receives the first information and the second information from the second device.
[0013] In a possible implementation, the first device receives first information indicative of configuration of a first sensing signal used for a first stage sensing. The first device obtains second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0014] In other words, the configuration of the second sensing signal indicated by the second information can be default in the first device. So, the first device does not need to receive the second information.
[0015] In a possible implementation, the first device obtains first information indicative of configuration of a first sensing signal used for a first stage sensing. The first device receives second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0016] In other words, the configuration of the first sensing signal indicated by the first information can be default in the second device. So, the first device does not need to receive the first information.
[0017] In the foregoing method, for different sensing purposes, the first device does not use the same configuration of the sensing signal. The first device can use different sensing signals with different configurations to conduct a sensing process. So, the sensing signal is more suitable for different sensing purposes. It will at least contribute to save the power of the first device or reduce the interference with other signals or improve the sensing performance. For example, if the first stage sensing is used to sense whether a new object appears in a sensing coverage, the configuration of the first sensing signal is more suitable. This technical solution prevents the first device from using a uniform sensing signal in all sensing scenarios so that the power of the first device can be saved.
[0018] In a possible design, after the first device obtains first information and before the first device obtains second information, the method further includes that the first device performs a first sensing procedure corresponding to the first stage sensing based on the configuration of a first sensing signal.
[0019] In some implementations, the first device transmits a first sensing report. The first sensing report indicates a new object appears in a sensing coverage.
[0020] As such, performing a sensing procedure corresponding to the first stage sensing will at least help the first device to obtain the configuration of the second sensing signal used for the second stage sensing.
[0021] In some implementations, after the first device obtains second information, the method further includes that the first device performs a second sensing procedure corresponding to the second stage sensing based on the configuration of the second sensing signal.
[0022] In some implementations, the first device transmits a second sensing report. The second sensing report includes the details of the new object.
[0023] In a possible design, the first information indicates a first bandwidth of the first sensing signal corresponding to the first stage sensing; and the second information indicates a second bandwidth of the second sensing signal corresponding to the second stage sensing; wherein the first bandwidth is smaller than the second bandwidth.
[0024] As such, for the first stage sensing and the second stage sensing, the first bandwidth is smaller than the second bandwidth. The frequency source configuration is more suitable for different sensing purposes. So, the frequency source will be at least reduced.
[0025] In a possible design, the first information further indicates a first start offset frequency of the first sensing signal. And the second information further indicates a second start offset frequency of the second sensing signal. The first start offset frequency is smaller than the second start offset frequency.
[0026] As such, for the first stage sensing and the second stage sensing, the first start offset frequency is smaller than the second start offset frequency. The frequency source configuration is more suitable for different sensing purposes.
[0027] In a possible design, the first information further indicates one or more first sub-channels of the first sensing signal. And the second information further indicates one or more second sub-channels of the second sensing signal; wherein an amount of the second sub-channels is smaller than an amount of the first sub-channels.
[0028] As such, for the first stage sensing and the second stage sensing, the amount of the second sub-channels is smaller than the amount of the first sub-channels. The sub-channel configuration is more suitable for different sensing purposes.
[0029] In a possible design, the first information further indicates a first sensing period of the first sensing signal and the second information further indicates a second sensing period of the second sensing signal. The first sensing period is shorter than the second sensing period.
[0030] As such, for the first stage sensing and the second stage sensing, the first sensing period is smaller than the second sensing period. So, the first device can conduct a sensing procedure with a shorter sensing period in a primary sensing scenario. This will at least contribute to save the power of the first device or reduce the interference with other signals.
[0031] In a possible design, the first information further indicates a sweeping direction and a sweeping time of one or more beams corresponding to the first stage sensing. And the sweeping direction is oriented to a definite position which is indicated to another sensing device. And the sweeping time is associated with a definite time which is indicated to the another sensing device.
[0032] In some implementations, the sweeping direction includes a sweeping range. The sweeping directions of different sensing devices can be different but are oriented to the definite position. In other words, the sweeping directions of the different sensing devices may be oriented to the same position. The definite time can be a time point or a time duration. The definite time of different sensing devices can be the same.
[0033] As such, different sensing devices can sweep beam in a direction oriented to the same position at the same time. This will at least reduce the interference between different sensing devices.
[0034] In a possible design, the first information further indicates a waveform type of the first sensing signal; and the waveform type of the first sensing signal comprises one of the following: orthogonal frequency division multiplexing (OFDM) , discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) , or a linearly frequency modulated (LFM) waveform.
[0035] In some implementations, the waveform type of the first sensing signal and a waveform type of an uplink signal can be same or different.
[0036] As such, different waveform types will satisfy different command corresponding to the first sensing signal.
[0037] In a possible design, the second information further indicates a frequency of the second sensing signal varies on different symbols.
[0038] As such, hopping configuration of the second sensing signal can increase the number of the sensing devices on the multiplexed subchannels and keep the interference between the different sensing devices as low as possible.
[0039] In a possible design, the second information further indicates a waveform type of the second sensing signal. The waveform type of the second sensing signal may be OFDM or LFM.
[0040] As such, different waveform types will satisfy different command corresponding to the second sensing signal.
[0041] In a possible design, the configuration of the second sensing signal is transmitted to a user equipment (UE) and the configuration of the second sensing signal indicates the UE to keep silent in a time and frequency resource corresponding to the configuration of the second sensing signal.
[0042] As such, if a UE is indicated the time and frequency resource of the second sensing signal, the UE can keep silent in this time and frequency resource. This will reduce a communication interference for the first device.
[0043] According to a second aspect, a method for signal configuration is described. The method may be applied at a second device, for example, a second device or a module in a second device, a circuit or a chip (for example, a modem (modem) chip, also referred to as a baseband (baseband) chip, or a system on chip (system on chip, SoC) chip or a system in package (system in package, SIP) chip that includes a modem core) that is responsible for a communication function in a second device. For example, the method is applied to a second device.
[0044] In this method, the second device transmits first information indicative of configuration of a first sensing signal used for a first stage sensing. The second device transmits second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0045] In some implementations, the second device is used to configuration information. For example, the second device can be referred to as a base station.
[0046] In some implementations, the first stage sensing can be referred to as primary sensing and the second stage sensing can be referred to as advanced sensing. In other words, a sensing assignment of the first stage sensing is easier than a sensing assignment of the second stage sensing. For example, the first stage sensing is used to sense whether a new object appears in a sensing coverage and the second stage sensing is used to sense details of the new object.
[0047] In a possible implementation, if the first information is default in the first device, the second device transmits the second information. The first information is different from the second information.
[0048] In a possible implementation, if the second information is default in the first device, the second device transmits the first information. The first information is different from the second information.
[0049] In the foregoing method, for different sensing purposes, the second device transmits different information indicative of different configurations corresponding to the different sensing stages. This will help the first device to use different sensing signals with different configurations to conduct a sensing process. So, the sensing signal is more suitable for different sensing purposes. It will at least contribute to save the power of the first device. For example, if the first stage sensing is used to sense whether a new object appears in a sensing coverage, the configuration of the first sensing signal is more suitable. This technical solution is helpful for the first device to avoid use a uniform sensing signal in all sensing scenarios so that the power of the first device can be saved.
[0050] In some implementations, the second device receives a first sensing report. The first sensing report indicates a new object appears in a sensing coverage.
[0051] In some implementations, the second device receives a second sensing report. The second sensing report includes the details of the new object.
[0052] In a possible design, the first information indicates a first bandwidth of the first sensing signal corresponding to the first stage sensing; and the second information indicates a second bandwidth of the second sensing signal corresponding to the second stage sensing; wherein the first bandwidth is smaller than the second bandwidth.
[0053] As such, for the first stage sensing and the second stage sensing, the first bandwidth is smaller than the second bandwidth. The frequency source configuration is more suitable for different sensing purposes. So, it is at least helpful for the first device to reduce the frequency source.
[0054] In a possible design, the first information further indicates a first start offset frequency of the first sensing signal. And the second information further indicates a second start offset frequency of the second sensing signal. The first start offset frequency is smaller than the second start offset frequency.
[0055] As such, for the first stage sensing and the second stage sensing, the first start offset frequency is smaller than the second start offset frequency. It is at least helpful for the first device to make the frequency source configuration more suitable for different sensing purposes.
[0056] In a possible design, the first information further indicates one or more first sub-channels of the first sensing signal. And the second information further indicates one or more second sub-channels of the second sensing signal; wherein an amount of the second sub-channels is smaller than an amount of the first sub-channels.
[0057] As such, for the first stage sensing and the second stage sensing, the amount of the second sub-channels is smaller than the amount of the first sub-channels. It is at least helpful for the first device to make the sub-channel configuration more suitable for different sensing purposes.
[0058] In a possible design, the first information further indicates a first sensing period of the first sensing signal and the second information further indicates a second sensing period of the second sensing signal. The first sensing period is shorter than the second sensing period.
[0059] As such, for the first stage sensing and the second stage sensing, the first sensing period is smaller than the second sensing period. So, it is helpful for the first device to conduct a sensing procedure with a shorter sensing period in a primary sensing scenario. This will at least contribute to save the power of the first device.
[0060] In a possible design, the first information further indicates a sweeping direction and a sweeping time of one or more beams corresponding to the first stage sensing. And the sweeping direction is oriented to a definite position which is indicated to another sensing device. And the sweeping time is associated with a definite time which is indicated to the another sensing device.
[0061] In some implementations, the sweeping direction include a sweeping range. The sweeping directions of different sensing devices can be different but are oriented to the definite position. In other words, the sweeping directions of the different sensing devices may be oriented to the same position. The definite time can be a time point or a time duration. The definite time of different sensing devices can be the same.
[0062] As such, different sensing devices can sweep beam in a direction oriented to the same position at the same time. This will at least help different sensing devices to reduce the interference.
[0063] In a possible design, the first information further indicates a waveform type of the first sensing signal; and the waveform type of the first sensing signal comprises one of the following: orthogonal frequency division multiplexing (OFDM) , discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) , or linearly frequency modulated (LFM) waveform.
[0064] In some implementations, the waveform type of the first sensing signal and a waveform type of an uplink signal can be same or different.
[0065] As such, different waveform types will satisfy different command corresponding to the first sensing signal.
[0066] In a possible design, the second information further indicates a frequency of the second sensing signal varies on different symbols.
[0067] As such, hopping configuration of the second sensing signal is helpful to increase the number of the sensing devices on the multiplexed subchannels and keep the interference between the different sensing devices as low as possible.
[0068] In a possible design, the second information further indicates a waveform type of the second sensing signal. The waveform type of the second sensing signal may be OFDM or LFM.
[0069] As such, different waveform types will satisfy different command corresponding to the second sensing signal.
[0070] In a possible design, the second device further transmits the configuration of the second sensing signal to a user equipment (UE) and the configuration of the second sensing signal indicates the UE to keep silent in a time and frequency resource corresponding to the configuration of the second sensing signal.
[0071] As such, if a UE is indicated the time and frequency resource of the second sensing signal by the second device, the UE can keep silent in this time and frequency resource. This is helpful for the first device to reduce a communication interference.
[0072] According to a third aspect, an apparatus for signal configuration is described. The apparatus for signal configuration has a function of implementing the first aspect. For example, the apparatus includes a corresponding module, unit, or means (means) for performing operations in the first aspect. The module, unit, or means may be specifically implemented by using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0073] According to a fourth aspect, an apparatus for signal configuration is described. The apparatus for signal configuration has a function of implementing the second aspect. For example, the apparatus includes for signal configuration a corresponding module, unit, or means (means) for performing operations in the second aspect. The module, unit, or means may be specifically implemented by using software, may be implemented by using hardware, or may be implemented by using software in combination with hardware.
[0074] According to a fifth aspect, another apparatus for signal configuration is described. The apparatus for signal configuration includes a memory and one or more processors. The memory is configured to store a part or all of a necessary computer program or instructions for implementing a function in the first aspect. The one or more processors may execute the computer program or the instructions, and when the computer program or the instructions is / are executed, the apparatus for signal configuration is enabled to implement the method in any possible design or implementation of the first aspect.
[0075] In some implementations, the apparatus for signal configuration may further include an interface circuit, and the processor is configured to communicate with another apparatus or component through the interface circuit.
[0076] In some implementations, the apparatus for signal configuration may further include the memory.
[0077] The apparatus for signal configuration may be a sensing agent, a module in a sensing agent, or a chip responsible for a communication function in a sensing agent, for example, a modem chip (also referred to as a baseband chip) or an SoC chip or an SIP chip that includes a modem module.
[0078] According to a sixth aspect, another apparatus for signal configuration is described. The apparatus for signal configuration includes a memory and one or more processors. The memory is configured to store a part or all of a necessary computer program or instructions for implementing a function in the second aspect. The one or more processors may execute the computer program or the instructions, and when the computer program or the instructions is / are executed, the apparatus for signal configuration is enabled to implement the method in any possible design or implementation of the second aspect.
[0079] In some implementations, the apparatus for signal configuration may further include an interface circuit, and the processor is configured to communicate with another apparatus or component through the interface circuit.
[0080] In some implementations, the apparatus for signal configuration may further include the memory.
[0081] The apparatus for signal configuration may be a base station, a module in a base station, or a chip responsible for a communication function in a base station, for example, a modem chip (also referred to as a baseband chip) or an SoC chip or an SIP chip that includes a modem module.
[0082] According to a seventh aspect, a system for signal configuration is described. The system includes an apparatus which is enabled to implement the method in any possible design or implementation of the first aspect, and an which is enabled to implement the method in any possible design or implementation of the second aspect.
[0083] According to an eighth aspect, a computer-readable storage medium is described. The computer-readable storage medium stores computer-readable instructions, and when a computer reads and executes the computer-readable instructions, the computer is enabled to perform the method in any one of the possible designs of the first aspect to the second aspect.
[0084] According to a ninth aspect, this application provides a computer program product. When a computer reads and executes the computer program product, the computer is enabled to perform the method in any one of the possible designs of the first aspect to the second aspect.DESCRIPTION OF DRAWINGS
[0085] FIG. 1 illustrates an example for a communication system 100;
[0086] FIG. 2 illustrates another example for a communication system 100;
[0087] FIG. 3 is a schematic illustration showing an apparatus 310 wirelessly communicating with another apparatus 320 within a communication system (e.g., the communication system 100) according to an implementation of the present disclosure.;
[0088] FIG. 4 illustrates an example apparatus 410 according to an implementation of the present disclosure;
[0089] FIG. 5 illustrates example apparatus 510 according to an implementation of the present disclosure;
[0090] FIG. 6 illustrates a diagram of discrete LFM sequence according to an implementation of this application;
[0091] FIG. 7 illustrates a diagram of discrete triangular waveform according to an implementation of this application;
[0092] FIG. 8 illustrates another diagram of discrete triangular waveform according to an implementation of this application;
[0093] FIG. 9 illustrates another diagram of discrete triangular waveform according to an implementation of this application;
[0094] FIG. 10 is a schematic flowchart of a method for signal configuration according to an implementation of this application;
[0095] FIG. 11 is a schematic flowchart of a method for signal configuration according to an implementation of this application;
[0096] FIG. 12 illustrates a diagram of beam sweeping for the sensing agents according to an implementation of this application;
[0097] FIG. 13 illustrates a diagram of waveform transmission for the sensing agents according to an implementation of this application;
[0098] FIG. 14 illustrates a diagram of waveform transmission for the sensing agents according to an implementation of this application;
[0099] FIG. 15 illustrates a diagram of waveform transmission for the sensing agents according to an implementation of this application;
[0100] FIG. 16 illustrates a diagram of a chirp signal with no frequency offset and with frequency offset according to an implementation of this application;
[0101] FIG. 17 illustrates a diagram of another chirp signal with no frequency offset and with frequency offset according to an implementation of this application;
[0102] FIG. 18 illustrates a diagram of different hopping pattern for different sensing agents according to an implementation of this application;
[0103] FIG. 19 illustrates a diagram of different sensing periods for high speed sensing case according to an implementation of this application;
[0104] FIG. 20 illustrates a diagram of different waveform selection for the second stage sensing according to an implementation of this application;
[0105] FIG. 21 illustrates a diagram of a scenario for UE to keep silence according to an implementation of this application;
[0106] FIG. 22 illustrates a diagram of a scenario for UE to keep silence according to an implementation of this application;
[0107] FIG. 23 is a schematic block diagram of an apparatus 1000 according to some implementations of the present application; and
[0108] FIG. 24 is a schematic block diagram of an apparatus according to some implementations of the present application. DESCRIPTION OF IMPLEMENTATIONS
[0109] The following describes technical solutions of the present application with reference to the accompanying drawings.
[0110] FIG. 1 illustrates an example for communication system 100. Referring to FIG. 1, as an illustrative example without limitation, a simplified schematic illustration of a communication system is provided. FIG. 1 is a schematic illustration of an example communication system according to an implementation of the present disclosure, there is shown a communication system 100 that includes a radio access network (RAN) 120, one or more communication electronic devices (EDs) 110a, 110b, 110c, 110d, 110e, 110f, 110g, 110h, 110i, 110j (collectively referred to as 110) , a core network 130, a Public Switched Telephone Network (PSTN) 140, the Internet 150, and other networks 160 . The RAN 120 may include, but is not limited to, a future generation RAN, or a legacy RAN such as, but not limited to, 5th generation (5G) , 4th generation (4G) , 3rd generation (3G) or 2nd generation (2G) radio access network. The RAN 120 may be, for example, an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN) , a NextGen RAN (NG RAN) , or some other type of RAN. Examples of RAN 120 based on the evolution of telecommunications standards include, but is not limited to, GSM (Global System for Mobile Communications) and CDMA (Code Division Multiple Access) for 2G, UMTS (Universal Mobile Telecommunications System) based on WCDMA (Wideband Code Division Multiple Access) and CDMA2000 for 3G, LTE (Long-Term Evolution) and WiMAX (Worldwide Interoperability for Microwave Access) for 4G, and NR (New Radio) for 5G. In some implementations, The RAN 120 may use any radio access technology (RAT) in the wireless interface between the one or more EDs 110 and the RAN 120. In some implementations, the term “radio access” may refer to the future generation air interface standards which may include both terrestrial networks (TNs) and non-terrestrial networks (NTNs) . These networks will be described in greater detail below in conjunction with various implementations. The one or more communication EDs 110 (also referred to as “user equipment” ) are configured to connect (e.g., communicatively couple) with each other or to one or more network nodes 170a, 170b (collectively referred to as 170) in the RAN 120. The core network (CN) 130 is a part of the communication system 100 and consists of network nodes (e.g., 170a, 170b) which provide support for the network features and telecommunication services. In some implementations, the CN 130 may be dependent on the RAT used in the communication system 100. In other implementations, the CN 130 may be access-agnostic, i.e., the CN 130 may be independent of the RAT used in the communication system 100. There are different types of CN 130, for different 3GPP system generations. For example, the CN 130 is the Evolved Packet Core (EPC) in 4G, also known as the Evolved Packet System (EPS) . In another example, the CN 130 is the 5G Core (5GC) which was developed as part of the 5G System (5GS) . The CN 130 also enables integration of different 3GPP and non-3GPP access types. In some implementations and referring to FIG. 1, the CN 130 also provides the interface towards external networks that may include the PSTN 140, the Internet 150, and other networks 160 in the communication system 100.
[0111] In general, the communication system 100 facilitates interaction between multiple wireless or wired elements. The communication system 100 may transmit different types of content, such as voice, data, video, and / or text, through different transmission methods such as, but not limited to, broadcast, multicast, groupcast, and unicast. Additionally, the communication system 100 operates by allocating and / or sharing resources, such as carrier spectrum bandwidth, among its constituent elements.
[0112] The communication system 100 may provide a wide range of communication services and applications including, but not limited to, Enhanced Mobile Broadband (eMBB) services, Ultra-Reliable Low-Latency Communication (URLLC) services, Massive Machine Type Communication (mMTC) services, Integrated Sensing And Communication (ISAC) , immersive communication, Ultra-massive Machine-Type Communication (uMTC) , hyper reliable and low-latency communication, ubiquitous connectivity, integrated AI and communication, and other services that can be provided by a future generation communication system. The communication system 100 may provide other services and applications such as, but not limited to, earth monitoring, remote sensing, passive sensing and positioning, navigation and tracking, autonomous delivery and mobility and the like.
[0113] The communication system 100 may include a terrestrial communication system (or network) and / or a non-terrestrial communication system (or network) . The communication system 100 may provide a high degree of availability and robustness through a joint operation of the terrestrial communication system and the non-terrestrial communication system. For example, integrating a non-terrestrial communication system (or components thereof) into a terrestrial communication system can result in a heterogeneous network comprising multiple layers. The heterogeneous network may achieve better overall performance through efficient multi-link joint operation, more flexible functionality sharing, and faster physical layer link switching between terrestrial networks and non-terrestrial networks. The terrestrial communication system and the non-terrestrial communication system could be considered as sub-systems of the communication system 100.
[0114] A sensing agent applied in this application is a special electronic device. The sensing agent not shown in FIG. 1 can communicate with network node 170a or 170b shown in FIG. 1, such as base station, and communicate with one or more EDs 110 shown in FIG. 1. In other words, the sensing agent is a network node or a specific UE (UE with specific capability) to perform sensing between the base station and the electronic devices. The sensing agent communicates with the base station in downlink or uplink and senses objects.
[0115] FIG. 2 illustrates another example for communication system 100 according to an implementation of the present disclosure, there is shown the communication system 100 includes EDs 110a, 110b, 110c, 110d (collectively referred to as ED 110) , RANs 120a, 120b, one or more CNs 130, a PSTN 140, the Internet 150, and other networks 160. Additionally, the communication system 100 may also include a non-terrestrial network (NTN) 120c. The RANs 120a and120b may include network nodes 170a, 170b include base stations, which can be generally referred to as terrestrial network (TN) devices or terrestrial transmit and receive points (T-TRPs) 170a and 170b (collectively referred to as 170) . In this context, the terms "TRP" and "base station" are used interchangeably unless otherwise specified. For simplicity, this disclosure primarily refers to network nodes as base stations; however, unless explicitly stated otherwise, references to TRP are considered non-limiting and interchangeable. The T-TRPs 170a, 170b may be base stations mounted on a building or tower. In one implementation, the NTN 120c includes a RAN node such as a base station 172, which may be generally referred to as an NTN device, a non-terrestrial node, a non-terrestrial network device, a non-terrestrial base station, or a non-terrestrial transmit and receive point (NT-TRP) 172.
[0116] In some implementations, the NT-TRP 172 is not attached to the ground, for example, as in the case of an airborne base station. An airborne base station may be implemented using communication equipment supported or carried by a flying device. For example, a flying device may include, but is not limited to, an airborne platform (such as a blimp or an airship) , balloon, drone (such as quadcopter) , and other types of aerial vehicles. In some implementations, an airborne base station may be supported or carried by an unmanned aerial system (UAS) or an unmanned aerial vehicle (UAV) , such as a drone. An airborne base station may be a moveable or mobile base station that can be flexibly deployed in different locations to meet network demand. A satellite base station is another example of a non-terrestrial base station. A satellite base station may be implemented using communication equipment supported or carried by a satellite. A satellite base station may also be referred to as an orbiting base station. High altitude platforms are yet another example of non-terrestrial base stations, including international mobile telecommunication base stations.
[0117] As referred to herein, and unless specified otherwise, a “TRP” may also refer to a T-TRP or an NT-TRP, a “T-TRP” may also refer to a “TN TRP” , and an “NT-TRP” may also refer to an “NTN TRP” . The NTN 120c may be considered a RAN, sharing operational aspects with RANs 120a, 120b. The NTN 120c may include at least one NTN device and at least one corresponding terrestrial network device. The at least one NTN device may function as a transport layer device and the at least one corresponding terrestrial network device may function as a RAN node, communicating with the ED 110 via the NTN device. Additionally, there may be an NTN gateway on the ground (referred to as a terrestrial network device) that also functions as a transport layer device facilitating communication with both the NTN device and the RAN node. The RAN node may communicate with the ED 110 via the NTN device and the NTN gateway. In some implementations, the NTN gateway and the RAN node may be located within the same device.
[0118] A base station 170 (also referred to as a TRP as stated above) is a network element within a radio access network responsible for radio transmission and reception in one or more cells to or from the ED (such as a user equipment) . In different implementations, the base station 170 may also be known as a base transceiver station (BTS) , a radio base station, a network node, a network device, a device on the network side, a transmit / receive node, a Node B, an evolved NodeB (eNodeB or eNB) , a Home eNodeB, a next Generation NodeB (gNB) , a transmission point (TP) , a site controller, an access point (AP) , a wireless router, a relay station, a terrestrial node, a terrestrial network device, a terrestrial base station, a non-terrestrial node, a non-terrestrial network device, a non-terrestrial base station, and a positioning node, among other possibilities. The base station 170 may be a macro base station (BS) , a pico BS, a relay node, a donor node, or combinations thereof. When the base station 170 performs (or is configured to perform) a method described herein, it may be interpreted as the base station itself, one or more modules (or units) in the base station, a circuit or chip, or a combination thereof, performing the method. For example, the circuit or chip may include a modem chip, also referred to as a baseband chip, a system on chip (SoC) including a modem core, system in package (SIP) ) , and the like, and may be responsible for one or more communication functions within the base station.
[0119] The EDs 110a-110d and TRPs 170a-170b, 172 are examples of communication equipment configured to implement some or all of the operations and / or implementations described herein. The T-TRP 170a forms part of the RAN 120a, which may include other TRPs, and / or other devices. Also, the TRP 170b forms part of the RAN 120b, which may include other TRPs, and / or devices. Each TRP 170a, 170b may transmit and / or receive wireless signals within a particular geographic region or area, sometimes referred to as a “cell” or a “coverage area” . The TRPs 170a-170b may be responsible for allocating and / or configuring resources and transmission and / or reception in a set of cell (s) . A cell is a radio network object that can be uniquely identified by a cell identification that is broadcasted over a geographical region or area from base stations associated with the cell. A cell can work in either FDD or TDD mode. A cell may be further divided into cell sectors, and a base station 170a-170b may, for example, employ one or more transceivers to provide services to one or more sectors. Some implementations, may include pico or femto cells if supported by the radio access technology. In some implementations, one or more transceivers could be used for each cell, such as with Multiple-Input Multiple-Output (MIMO) technology. The number of RANs 120a-120b shown is merely an example. Any number of RANs may be contemplated when designing the communication system 100.
[0120] A base station may be a single element, as shown in the figures, or multiple elements distributed throughout the corresponding RAN, or otherwise configured. In some implementations, a plurality of RAN nodes coordinate to assist the ED 110 in implementing radio access, and different RAN nodes separately implement and handle different functions of the base station. For example, the RAN node may be a central unit (CU) , a distributed unit (DU) , a CU-control plane (CP) , a CU-user plane (UP) , or a radio unit (RU) etc. The CU and the DU may be separately deployed, or included within the same element (i.e., a baseband unit (BBU) ) . The RU may be included in a radio frequency device or a radio frequency unit (i.e., a remote radio unit (RRU) , an active antenna unit (AAU) , or a remote radio head (RRH) ) . In different systems, the CU (or the CU-CP and the CU-UP) , the DU, or the RU may be known by different names, but their functions are understood by person skilled in the art. For example, in an open radio access network (ORAN) system, a CU may be referred to as an open CU (O-CU) , a DU may be referred to as an open DU (O-DU) , and a CU-CP may be referred to as an open CU-CP (O-CU-CP) . The CU-UP may also be referred to as an open CU-UP (O-CU-UP) , and the RU may also be referred to as an open RU (O-RU) . Any one of the CU (or the CU-CP, the CU-UP) , the DU, and the RU may be implemented using a software module, a hardware module, or a combination of a software module and a hardware module.
[0121] Furthermore, communication between different devices / apparatuses in various implementations of this disclosure may refer to direct communication (that is, without the need of forwarding by another device / apparatus) , or may refer to communication (s) between different devices / apparatuses via another device / apparatus (that is, requiring forwarding by another device / apparatus) . Alternatively, such communication (s) may involve one functional unit inside a device / apparatus using another functional unit within the device / apparatus to communicate with another device / apparatus. In other words, phrases such as "sending (or transmitting) information to. . . (an ED or a base station) " in this disclosure may be understood as a destination endpoint of the information being an ED or a base station, including, sending / transmitting information directly or indirectly to an ED or a base station. Similarly, phrases like "receiving information from. . . (an ED or a base station) " may be understood as a source endpoint of the information being an ED or a base station, including directly or indirectly receiving information from an ED or a base station. Between the source endpoint that sends the information and the destination endpoint, necessary processing such as, but not limited to, format conversion, digital-to-analog conversion, amplification, and filtering may be performed on the information. However, the destination endpoint may understand valid information from the source endpoint. A similar understanding applies to other descriptions in this disclosure without reiterating details already described. In the present disclosure, the terms "send" and "transmit" may be used interchangeably in different implementations of this disclosure.
[0122] The ED 110 is used to connect people, objects, machines, and other entities. The ED 110 may be widely used in various scenarios including, but not limited to, cellular communications, device-to-device (D2D) , vehicle to everything (V2X) , peer-to-peer (P2P) , machine-to-machine (M2M) , MTC, internet of things (IoT) , virtual reality (VR) , augmented reality (AR) , mixed reality (MR) , metaverse, digital twin, industrial control, self-driving, remote medical, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, and autonomous delivery and mobility.
[0123] Each ED 110 represents any suitable end user device for wireless operation and may include such devices (or may be referred to as, but not limited to) a user equipment (UE) or a user device or a terminal device, a wireless transmit / receive unit (WTRU) , a mobile station, a fixed or mobile subscriber unit, a cellular telephone, a station (STA) , an MTC device, a personal digital assistant (PDA) , a smartphone, a laptop, a computer, a tablet, a wireless sensor, a consumer electronics device, a smart book, a vehicle, a car, a truck, a bus, a train, or an IoT device, wearable devices (such as a watch, a pair of glasses, head mounted equipment, etc. ) , an industrial device, or an apparatus (such as a module, modem, or chip) in the forgoing devices, among other possibilities. Future generation EDs 110 may be referred to by other terms. When an ED 110 performs (or is configured to perform) a method described herein, it may be interpreted as the ED itself, one or more modules (or units) in the ED, a circuit or chip, or a combination thereof, performing the method. For example, the circuit or chip may include a modem chip, also referred to as a baseband chip, a system on chip (SoC) including a modem core, or system in package (SIP) ) , and the like, and may be responsible for one or more communication functions in the ED.
[0124] Each ED 110 connected to TRPs 170a-170b, and / or TRPs 172 can be dynamically or semi-statically turned-on (i.e., established, activated, or enabled) , turned-off (i.e., released, deactivated, or disabled) and / or configured in response to one of more of: connection availability and connection necessity.
[0125] Any ED 110 may be alternatively or additionally configured to interface, access, or communicate with any of the TRPs 170a, 170b and 172, the Internet 150, the CN 130, the PSTN 140, the other networks 160, or any combination thereof. In some examples, the ED 110a may communicate an uplink (UL) and / or downlink (DL) transmission over a terrestrial air interface 190a with station-TRP 170a. In some examples, the EDs 110a, 110b, 110c, and 110d may also communicate directly with one another via one or more sidelink (SL) air interfaces 190b. In some examples, the EDs 110a, 110d may communicate using an UL and / or DL transmission over a non-terrestrial air interface 190c with NT-TRP 172.
[0126] An air interface (such as, for example, 190a, 190b, 190c) generally includes a number of components and associated parameters that collectively specify how a transmission is to be sent and / or received over a wireless communications link between two or more communicating devices such as EDs and base station (s) . For example, an air interface may include one or more components defining the waveform (s) , frame structure (s) , multiple access scheme (s) , protocol (s) , coding scheme (s) and / or modulation scheme (s) for conveying information (such as, data) over a wireless communications link. The air interfaces 190a and 190b may use similar communication technology, that may include any suitable radio access technology.
[0127] The non-terrestrial air interface 190c can enable communication between the EDs 110a, 110d and one or more NT-TRPs 172 via a wireless link or simply a link. For some examples, the link is a dedicated connection for unicast transmission, a connection for broadcast transmission, or a connection between a group of EDs 110 and one or more NT-TRPs 172 for multicast transmission.
[0128] The TRPs 170a-170b, 172 may communicate with one another over one or more air interfaces 190e, 190f using wireless communication links (such as radio frequency (RF) , microwave, infrared (IR) , etc. ) or wired communication links. The air interfaces 190e, 190f may utilize any suitable radio access technology, and may be substantially similar to the air interfaces 190a, 190c over which the EDs 110a-110d communicate with one or more of the TRP 170a-170b, 172 or they may be substantially different. For example, the communication system 100 may implement one or more channel access methods, such as Time Division Multiple Access (TDMA) , Frequency Division Multiple Access (FDMA) , Code Division Multiple Access (CDMA) , Single Carrier Frequency Division Multiple Access (SC-FDMA) , Low Density Signature Multicarrier Code Division Multiple Access (LDS-MC-CDMA) , Non-Orthogonal Multiple Access (NOMA) , Pattern Division Multiple Access (PDMA) , Lattice Partition Multiple Access (LPMA) , Resource Spread Multiple Access (RSMA) , and Sparse Code Multiple Access (SCMA) .
[0129] The RANs 120a and 120b are in communication with the CN 130 to provide the EDs 110a 110b, and 110c with various services such as voice, data, multimedia, and other services. The RANs 120a and 120b and / or the CN 130 may be in direct or indirect communication with one or more other RANs (not shown) , which may or may not be directly served by the CN 130, and may employ different radio access technologies from RAN 120a and / or RAN 120b. The CN 130 may also serve as a gateway access between (i) the RANs 120a and 120b and / or the EDs 110a 110b, and 110c, and (ii) other networks (such as the PSTN 140, the Internet 150, and the other networks 160) . In addition, some or all of the EDs 110a 110b, and 110c may include functionality for communicating with different wireless networks over different wireless links using different wireless technologies and / or protocols. For example, the EDs 110a 110b, and 110c communicate using different cellular communications protocols, such as, but not limited to, a Global System for Mobile Communications (GSM) protocol, a code-division multiple access (CDMA) network protocol, a Push-to-Talk (PTT) protocol, a PTT over Cellular (POC) protocol, a Universal Mobile Telecommunications System (UMTS) protocol, a 3GPP Long Term Evolution (LTE) protocol, a fifth generation (5G) protocol, a New Radio (NR) protocol, and the like. Instead of wireless communication (or in addition thereto) , the EDs 110a 110b, and 110c may communicate using wired communication channels to a service provider or switch (not shown) , and / or to the Internet 150. The PSTN 140 may include circuit switched telephone networks for providing plain old telephone service (POTS) . The Internet 150 may include a network of computers and subnets (intranets) or both, and incorporate protocols, such as internet protocol (IP) , transmission control protocol (TCP) , user datagram protocol (UDP) . EDs 110a 110b, and 110c may be multimode devices capable of operation according to multiple radio access technologies, and may incorporate one or multiple transceivers necessary to support such.
[0130] In addition, the communication system 100 may comprise a sensing agent (not shown) to manage the sensed data from ED 110 and / or any one of TRPs 170a, 170b, 172. In one implementation, the sensing agent may be part of any one of TRPs 170a, 170b, 172. In another implementation, the sensing agent is a separate node that can communicate with the CN 130 and / or the RAN 120 (such as any one of TRPs 170a, 170b, 172) .
[0131] In addition, a sensing agent can be a special electronic device between TRPs (such as 170a, 170b and 172 shown in FIG. 2) and EDs (such as 110a, 110b, 110c and 110d) . The sensing agent not shown in FIG. 2 can communicate with in downlink and uplink and senses objects.
[0132] FIG. 3 is a schematic illustration showing an apparatus 310 wirelessly communicating with another apparatus 320 within a communication system (e.g., the communication system 100) according to an implementation of the present disclosure. The apparatus 310 may be an electronic device (such as ED 110) . The apparatus 320 may be a network node (e.g. the network node 170) such as T-TRP 170 or an NT-TRP 172 shown in FIG. 2. Although only one apparatus 310, and one apparatus 320 are shown in FIG. 2, the number of apparatus 310 and / or number of apparatus 320 can vary, potentially including one or more of each. For example, a single ED 110 may be served by a single T-TRP 170 (or a single NT-TRP 172) , or by multiple T-TRPs 170 (or multiple NT-TRPs 172) . Similarly, a single ED 110 may be served by one or more T-TRPs 170 and one or more NT-TRPs 172. Similarly, a single T-TRP 170 (or a single NT-TRP 172) may serve one or more EDs 110.
[0133] In this disclosure, a sensing agent used for sensing can communicate with apparatus 320 in uplink or downlink and senses objects. For example, apparatus 310 can be an example to be sensed by the sensing agent.
[0134] The apparatus 310 may include one or more processors 210. For clarity and to avoid overcrowding the illustration, only a single processor 210 is illustrated. The apparatus 310 may further include a transmitter 201 and a receiver 203 coupled to one or more antennas 204. For clarity, only a single antenna 204 is illustrated. One, some, or all of the antennas 204 may alternatively be panels. In some implementations, the transmitter 201 and the receiver 203 are separate from each other. In other implementations, the transmitter 201 and the receiver 203 may be integrated into a single unit, for example, as a transceiver. The transceiver is configured to modulate data or other content for transmission by the one or more antennas 204 or a network interface controller (NIC) . The transceiver may also be configured to demodulate data or other content received by the one or more antennas 204. A transceiver may include any suitable structure for generating signals for wireless or wired transmission and / or for processing signals received through wireless or wired communication. Each antenna 204 includes any suitable structure for transmitting and / or receiving wireless or wired signals. The apparatus 310 may include a memory 208. In some implementations, the apparatus 310 may include multiple memories 208. Only a single transmitter 201, receiver 203, processor 210, memory 208, and antenna 204 is illustrated for simplicity, but the apparatus 310 may include one or more other components. In some implementations of the present disclosure, the transceiver (or transmitter 201 and / or receiver 203) may be viewed as an interface circuit.
[0135] The memory 208 is configured to store instructions used to perform operations described herein. The memory 208 may also be configured to store data that is used, generated, or collected by the apparatus 310. For example, the memory 208 can store software instructions or modules configured to implement some or all of the functionalities and / or operations described herein and that which are executed by the one or more processors 210.
[0136] The apparatus 310 may further include one or more input / output devices (not shown) or interfaces. The input / output devices or interfaces facilitate interaction with a user or other devices in the network. Each input / output device or interface includes suitable components for facilitating transmission of information to a user and reception of information from a user, and for various network interface communications. Such components may include, but are not limited to, a speaker, microphone, keypad, keyboard, display, touch screen, and the like.
[0137] The processor 210 may be configured to perform (or control the apparatus 310 to perform) operations (or methods) described herein as being performed by the apparatus 310. For example, the processor 210 performs or controls the apparatus 310 to perform the operations of: a) receiving one or more transport blocks (TBs) , b) using a resource for decoding at least one of the received TBs, c) releasing the resource for decoding another of the received TBs, and / or d) receiving configuration information configuring a resource. Specifically, the operations may include tasks related to: preparing a transmission for UL transmission to the apparatus 320, processing DL transmissions received from the apparatus 320, and handling SL transmission to and from another apparatus 310. Processing operations related to preparing a transmission for UL transmission may include operations such as, but not limited to, encoding, modulating, transmit beamforming, and generating symbols for transmission. Processing operations related to processing DL transmissions may include operations such as, but not limited to, receive beamforming, demodulating and decoding received symbols. Processing operations related to processing SL transmissions may include operations such as, but not limited to, transmit / receive beamforming, modulating / demodulating and encoding / decoding symbols. Depending upon the implementation, a DL transmission may be received by the receiver 203, possibly using receive beamforming, and the processor 210 may extract signaling from the DL transmission (such as by detecting and / or decoding the signaling) . An example of signaling may be a reference signal transmitted by the apparatus 320. In some implementations, the processor 210 implements the transmit beamforming and / or the receive beamforming based on the indication of beam direction, such as beam angle information (BAI) , received from the apparatus 320. In some implementations, the processor 210 may be configured to perform operations relating to network access (such as initial access) and / or downlink synchronization, which includes operations for detecting a synchronization sequence, decoding and obtaining the system information, and the like. In some implementations, the processor 210 may perform channel estimation, such as using a reference signal received from the apparatus 320.
[0138] Although not illustrated, in some implementations, the processor 210 may either be a part of the transmitter 201 or a part of the receiver 203 or a part of both the transmitter 201 and the receiver 203. Although not illustrated, in some implementations, the memory 208 may be a part of the processor 210.
[0139] The processor 210, along with the processing components of the transmitter 201 and the receiver 203 may each be implemented by one or more processors that may the same or different. These processors are configured to execute instructions stored in a memory (such as in the memory 208) .
[0140] The apparatus 320 includes one or more processors 260 (only one processor 260 is illustrated in FIG. 3) . The apparatus 320 may further include one or more transmitters 252 and one or more receivers 254 coupled to one or more antennas 256. Only a single antenna 256 is illustrated to avoid clutter in the illustration. One, some, or all of the antennas 256 may alternatively be panels. In some implementations, the transmitter 252 and the receiver 254 are separate from each other. In other implementations, the transmitter 252 and the receiver 254 may be integrated into a single unit such as, for example, as a transceiver. The apparatus 320 may further include a memory 258. In some implementations, the apparatus 320 may include multiple memories 258. The apparatus 320 may further include a scheduler 253. Only a single transmitter 252, receiver 254, processor 260, memory 258, antenna 256 and scheduler 253 are illustrated for simplicity, however the apparatus 320 may include one or more other components. In the present disclosure, in some implementations, the transceiver (or transmitter 252 and / or receiver254) may be viewed as an interface circuit.
[0141] In some implementations, various components of the apparatus 320 may be distributed. For example, some of the modules of the apparatus 320 may be located remotely from the equipment housing the antennas 256 for the apparatus 320 (and therefore also can be viewed as one or more nodes) . These modules, which can be considered as one or more nodes, may be coupled to the equipment that houses the antennas 256 over a communication link (not shown) , sometimes referred to as front haul, such as the Common Public Radio Interface (CPRI) . Therefore, in some implementations, the term apparatus 320 may also refer to network-side nodes that perform processing operations such as, but not limited to, determining the location of the apparatus 310, resource allocation (scheduling) , message generation, and encoding / decoding, and that which are not necessarily part of the equipment that houses the antennas 256 of the apparatus 320. The nodes may also be coupled to other apparatuses 320. In some implementations, the apparatus 320 may actually be a plurality of nodes that are operating together to serve the apparatus 310, such as through the use of coordinated multipoint transmissions, or through the use of ORAN system as described above in the disclosure.
[0142] The processor 260 is configured to perform operations including those related to: preparing a transmission for DL transmission to the apparatus 310, processing an UL transmission received from the apparatus 310, preparing a transmission for backhaul transmission to another apparatus 320, and processing a transmission received over backhaul from another apparatus 320. Processing operations related to preparing a transmission for DL or backhaul transmission may include operations such as, but not limited to, encoding, modulating, precoding (such as MIMO precoding) , transmit beamforming, and generating symbols for transmission. Processing operations related to processing received transmissions in the UL or over backhaul may include operations such as, but not limited to, receive beamforming, demodulating received symbols, and decoding received symbols. The processor 260 may also be configured to perform operations relating to network access (such as initial access) and / or DL synchronization, such as generating the content of synchronization signal blocks (SSBs) , generating the system information, and the like. In some implementations, the processor 260 is further configured to generate an indication of beam direction, such as BAI, which may be scheduled for transmission by the scheduler 253 which will be described below. In some implementations, the processor 260 implements the transmit beamforming and / or receive beamforming based on beam direction information (such as BAI) received from another apparatus 320. The processor 260 is configured to perform other network side processing operations described herein, such as, but not limited to, determining the location of the apparatus 310, determining where to deploy another apparatus 320, and the like. In some implementations, the processor 260 may generate signaling data, to configure one or more parameters of the apparatus 310 and / or one or more parameters of another apparatus 320. Any signaling data generated by the processor 260 is sent by the transmitter 252. In some implementations, the apparatus 320 implements physical layer processing. In some implementations, the apparatus 320 may perform higher layer functions such as those at the Medium Access Control (MAC) or Radio Link Control (RLC) layers in addition to physical layer processing. In the apparatus 320, the scheduler 253 may be coupled to the processor 260 or integrated within the processor 260. In some implementations, the scheduler 253 may be integrated within the apparatus 320 or may be operated separately from the apparatus 320. The scheduler 253 may schedule UL, DL, SL, and / or backhaul transmissions, including issuing scheduling grants and / or configuring scheduling-free (such as “configured grant” ) resources.
[0143] The apparatus 320 may further include a memory 258 that is configured to store instructions for performing the operations described herein. The memory 258 may also store data that is used, generated, or collected by the apparatus 320. For example, the memory 258 can store software instructions or modules configured to implement some or all of the functionalities and / or implementations described herein and that which are executed by the processor 260.
[0144] Although not illustrated, the processor 260 may be implemented as part of the transmitter 252 and / or a part of the receiver 254. Although not illustrated, in some implementations, the processor 260 may implement the scheduler 253 and the memory 258 may be implemented as part of the processor 260.
[0145] The processor 260, the scheduler 253, the processing components of the transmitter 252, and the processing components of the receiver 254 may each be implemented by the same or different processors that are configured to execute instructions stored in a memory, such as in the memory 258.
[0146] The apparatus 320 and / or the apparatus 310 may include other components, not shown or described herein for the sake of clarity.
[0147] Note that the term “signaling” , as used herein, may alternatively be referred to as control signaling, control message, control information, or message for simplicity. Signaling between a base station (such as the TRP 170a. 170b, 172) and a UE or sensing device (such as ED 110) , or signaling between a different UE or sensing device (such as between ED 110a and ED 110b) may be carried in physical layer signaling (also called as dynamic signaling) , which is transmitted in a physical layer control channel. For DL, the physical layer signaling may be known as downlink control information (DCI) which is transmitted in a physical downlink control channel (PDCCH) . For UL, the physical layer signaling may be known as uplink control information (UCI) which is transmitted in a physical uplink control channel (PUCCH) . For SL, signaling between different UEs or sensing devices (such as between ED 110a and ED 110b) may be known as SL control information (SCI) which is transmitted in a physical sidelink control channel (PSCCH) . Signaling may be carried in a higher layer (such as higher than physical layer) signaling, which is transmitted in a physical layer data channel, such as in a physical downlink shared channel (PDSCH) for downlink signaling, in a physical uplink shared channel (PUSCH) for uplink signaling, and in a physical sidelink shared channel (PSSCH) for SL signaling. Higher layer signaling may also be called static signaling, or semi-static signaling. The higher layer signaling may include radio resource control (RRC) protocol signaling or media access control -control element (MAC-CE) signaling. Signaling may be included in a combination of physical layer signaling and higher layer signaling.
[0148] It should be noted that in the present disclosure, “information” , when different from “message” , may be carried within a single message, or may be carried in multiple separate messages.
[0149] FIG. 4 illustrates an example apparatus 410 according to an implementation of the present disclosure. The apparatus 410 may be a communication device or an apparatus implemented in a communication device such as the ED 110 or the TRPs 170a, 170b, 172, or a sensing agent. The sensing agent is a special electronic device used for sensing. For example, the apparatus 410 implemented in an ED may be an integrated circuit, which in some instances may be referred to as a chip, a modem, a modem chip, a baseband chip, or a baseband processor. In some implementations, one or more integrated circuits can be packaged into a system-on-chip, a system-in-package, or a multi-chip module. The apparatus 410 can include one or more integrated circuits and other discrete components. In some implementations, the apparatus 410 may be a module within the ED 110, or within the apparatus 310. In some implementations, the apparatus 410 may be a module within one of the TRPs 170a, 170b, 172, or the apparatus 320.
[0150] In an example, the apparatus 410 may include one or more processors 411, and an interface circuit 412. The apparatus 410 may further include a memory 413. The one or more processors 411 are configured to process signals and execute one or more communication protocols. The memory 413 is configured to store at least a part of corresponding computer program instructions and / or data. In an example, the one or more processors 411 execute the computer program instructions stored in the memory 413 to implement related operations (for example, inputting, outputting, receiving, and transmitting) in the method embodiments disclosed herein. In some implementations, the memory 413 being configured to store the corresponding computer program instructions and / or data may mean that the memory 413 is configured to store all of the corresponding computer program instructions and / or data for execution by the one or more processors 411. In some implementations, the memory 413 being configured to store the corresponding computer program instructions and / or data may mean that the memory 413 is configured to store a part of the corresponding computer program instructions and / or data. For example, the part of the corresponding computer program instructions and / or data may include computer program instructions and / or data that need to be currently executed by the one or more processors 411. Thus, the memory 413 may store different parts of computer program instructions and / or data for a plurality times for the one or more processors 411 to perform related operations in the method embodiments disclosed herein. As a communication interface, the interface circuit 412 is configured to implement communication with another component. For example, the interface circuit 412 may communicate a signal with another apparatus or system, such as a radio frequency processing apparatus or another processor. The signal may include or carry information intended as a payload, such as user data, control information, etc. The signal may also include or carry information useful to a receiver, but not necessarily as a payload, such as a pilot signal or reference signal. Communicating the signal may include transmitting the signal to another component or device. Communicating the signal may additionally or alternatively include receiving the signal from another component or device. Transmitting the signal may include outputting the signal to a component or device that is directly or indirectly coupled to the interface circuit 412. Receiving the signal may include inputting or obtaining the signal from a component or device that is directly or indirectly coupled to the interface circuit 412. Optionally, to reduce a load of the one or more processors, a baseband signal processing circuit 414 may be also disposed to implement processing of at least a part of baseband signals, including signal demodulation, modulation, encoding, decoding, or the like.
[0151] The apparatus 410 may be the processor 210 (or 260) within the apparatus 310 (or 320) , in some scenarios, or may be included within the processor 210 (or 260) within the apparatus 310 (or 320) in some scenarios. The apparatus 410 may be a baseband chip or may include a baseband chip. In some implementations, the apparatus 410 may be independently packaged into a chip. In some implementations, the apparatus 310 (or 320) includes different types of chips. The apparatus 410 may be packaged into a processor chip (for example, an SoC chip or an SIP chip) with the different types of chips. In some implementations, the apparatus 410 may be packaged into a chip with some or all of circuits of a radio frequency processing system that may further be included in the apparatus 310 (or 320) .
[0152] FIG. 5 illustrates example apparatus 510 according to an implementation of the present disclosure. The apparatus 510 may include corresponding modules or units configured to implement methods and / or implementations described herein. In some implementations, the apparatus 510 includes a processing unit 512 and a communication unit 513. Optionally, the apparatus 510 may further include a storage unit 511 configured to store apparatus program code (or instructions) and / or data.
[0153] The apparatus 510 may be an ED side apparatus, for example, an ED or a module in an ED, or a circuit or a chip responsible for a communication function in an ED. In some implementations, apparatus 510 may be the apparatus 310. The processing unit 512 may be the processor 210. The communication unit 513 may comprise a receiving unit and / or a transmitting unit. The receiving unit and / or the transmitting unit may be the transmitter 201 and / or the receiver 203 respectively. The storage unit 511 may be the memory 208.
[0154] The apparatus 510 may be a base station side apparatus, for example, a base station or a module in a base station, or a circuit or a chip responsible for a communication function in a base station. In some implementations, apparatus 510 may be apparatus 320. The processing unit 512 may be the processor 260 (the scheduler 253 may also be included) . The communication unit 513 may comprise a receiving unit and / or a transmitting unit. The receiving unit and / or the transmitting unit may be the transmitter 252 and / or the receiver 254 respectively. The storage unit 511 may be the memory 258.
[0155] In some implementations, when the apparatus 510 is an ED 110 or a module in an ED 110, a function of the apparatus 510 may be implemented by one or more processors. Specifically, the processor may include a modem chip, or a system on chip (SoC) chip or an SIP chip that includes a modem core. A function of the communication unit 513 may be implemented by a transceiver circuit.
[0156] In some implementations, when the apparatus 510 is a circuit or a chip that is responsible for a communication function in an ED 110, such as a modem chip, a system on chip (SoC) chip or an SIP chip that includes a modem core -a function of the processing unit 512 may be implemented by a circuit system within the chip which includes one or more processors. A function of the communication unit 513 may be implemented by an interface circuit or a data transceiver circuit on the chip.
[0157] It may be understood that the units in the apparatus 510 may be logical or functional. Each function may correspond to one functional unit, or two or more functions may be integrated into a single functional unit. In actual implementation, all or some of the units may be integrated into a single physical entity, or may be distributed across different physical entities. In addition, the functional units may be implemented in the form of hardware, software, or a combination of hardware and software. Whether a function is implemented in the form of hardware or software depends on particular applications and design constraint conditions of the technical solutions. A person skilled in the art may use different methods to implement the described functions for specific applications, but it should not be considered that the implementation goes beyond the scope of this disclosure.
[0158] In an example, a functional unit in any one of the apparatuses may be configured as one or more integrated circuits for implementing the methods disclosed herein, for example, as one or more application-specific integrated circuits (application-specific integrated circuits, ASICs) , one or more central processing units (CPUs) , one or more microprocessors or microprocessor units (MPUs) , one or more microcontrollers or microcontroller units (MCUs) , one or more digital signal processors (DSPs) , one or more field programmable gate arrays (FPGAs) , or a combination of these.
[0159] In an example, the storage unit 511 may include a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, and / or a register.
[0160] A processor may be referred to as a processor system, an application processor, a baseband processor, a processor circuit, or a processor core. The processor may include one or a combination of one or more central processing units (CPUs) , one or more digital signal processors (DSPs) , one or more microprocessors (microprocessor units, MPUs) , one or more microcontrollers (microcontroller units, MCUs) , one or more graphics processing units (GPUs) , one or more field programmable gate arrays (FPGAs) , one or more artificial intelligence processors (AI processors) , or one or more neural network processing units (NPUs) .
[0161] Memory or a storage unit may include one or more of the following storage media: a random access memory (RAM) , a static random access memory (static RAM, SRAM) , a dynamic random access memory (dynamic RAM, DRAM) , a phase-change memory (PCM) , a resistive random access memory (resistive RAM, ReRAM) , a magnetoresistive random access memory (magnetoresistive RAM, MRAM) , a ferroelectric random access memory (ferroelectric RAM, FRAM) , a cache, a register, a read-only memory (ROM) , a flash memory (flash memory) , an erasable programmable read-only memory (erasable programmable ROM, EPROM) , a hard disk, and the like. In an example, computer program instructions used to execute embodiments may be stored in a non-volatile memory, for example, at least a part of a memory or storage unit (for example, one or more of a ROM, a flash memory, an EPROM, or a hard disk) . When a terminal runs, a part or all of corresponding computer program instructions may be loaded to a memory that has a higher transmission speed with the processor, for example, at least a part of a memory or a storage unit (for example, one or more of a RAM, an SRAM, a DRAM, a PCM, a RERAM, an MRAM, a FRAM, a cache, or a register) , so that the processor executes the computer program instructions to perform the steps in the method embodiments disclosed herein.
[0162] For ease of understanding of the implementations of this application, the following briefly describes several terms used in this application.
[0163] 1) Frame structure
[0164] A frame structure is a feature of the wireless communication physical layer that defines a time domain signal transmission structure, e.g. to allow for timing reference and timing alignment of basic time domain transmission units. Wireless communication between communicating devices may occur on time-frequency resources governed by a frame structure. The frame structure may sometimes instead be called a radio frame structure.
[0165] Depending upon the frame structure and / or configuration of frames in the frame structure, frequency division duplex (FDD) and / or time-division duplex (TDD) and / or full duplex (FD) communication may be possible. FDD communication is when transmissions in different directions (e.g. uplink vs. downlink) occur in different frequency bands. TDD communication is when transmissions in different directions (e.g. uplink vs. downlink) occur over different time durations. FD communication is when transmission and reception occur on the same time-frequency resource, i.e. a device can both transmit and receive on the same frequency resource concurrently in time.
[0166] One example of a frame structure is a frame structure in long-term evolution (LTE) having the following specifications: each frame is 10ms in duration; each frame has 10 subframes, which are each 1ms in duration; each subframe includes two slots, each of which is 0.5ms in duration; each slot is for transmission of 7 OFDM symbols (assuming normal CP); each OFDM symbol has a symbol duration and a particular bandwidth (or partial bandwidth or bandwidth partition) related to the number of subcarriers and subcarrier spacing; the frame structure is based on OFDM waveform parameters such as subcarrier spacing and CP length (where the CP has a fixed length or limited length options) ; and the switching gap between uplink and downlink in TDD has to be the integer time of OFDM symbol duration.
[0167] Another example of a frame structure is a frame structure in new radio (NR) having the following specifications: multiple subcarrier spacings are supported, each subcarrier spacing corresponding to a respective numerology; the frame structure depends on the numerology, but in any case the frame length is set at 10ms, and consists of ten subframes of 1ms each; a slot is defined as 14 OFDM symbols, and slot length depends upon the numerology. For example, the NR frame structure for normal CP 15 kHz subcarrier spacing ( “numerology 1” ) and the NR frame structure for normal CP 30 kHz subcarrier spacing ( “numerology 2” ) are different. For 15 kHz subcarrier spacing a slot length is 1ms, and for 30 kHz subcarrier spacing a slot length is 0.5ms. The NR frame structure may have more flexibility than the LTE frame structure.
[0168] 2) Cell / Carrier / Bandwidth Parts (BWPs) / Occupied Bandwidth:
[0169] A device, such as a base station, may provide coverage over a cell. Wireless communication with the device may occur over one or more carrier frequencies. A carrier frequency will be referred to as a carrier. A carrier may alternatively be called a component carrier (CC) . A carrier may be characterized by its bandwidth and a reference frequency, e.g. the center or lowest or highest frequency of the carrier. A carrier may be on licensed or unlicensed spectrum. Wireless communication with the device may also or instead occur over one or more bandwidth parts (BWPs) . For example, a carrier may have one or more BWPs. More generally, wireless communication with the device may occur over spectrum. The spectrum may comprise one or more carriers and / or one or more BWPs.
[0170] A cell may include one or multiple downlink resources and optionally one or multiple uplink resources, or a cell may include one or multiple uplink resources and optionally one or multiple downlink resources, or a cell may include both one or multiple downlink resources and one or multiple uplink resources. As an example, a cell might only include one downlink carrier / BWP, or only include one uplink carrier / BWP, or include multiple downlink carriers / BWPs, or include multiple uplink carriers / BWPs, or include one downlink carrier / BWP and one uplink carrier / BWP, or include one downlink carrier / BWP and multiple uplink carriers / BWPs, or include multiple downlink carriers / BWPs and one uplink carrier / BWP, or include multiple downlink carriers / BWPs and multiple uplink carriers / BWPs.
[0171] 3) PDDCH
[0172] In downlink, control signaling may be transmitted in a control channel which may be called PDCCH. Specifically, the PDCCH is a type of physical downlink channel used to carry a string of bits (e.g., downlink control information (DCI) bits) . For example, the PDCCH may be formed by a string of encoded DCI bits plus cyclic redundancy check (CRC) bits.
[0173] In some implementations, a signal carried on the PDCCH can also be called PDCCH. Specifically, transmitting / receiving a PDCCH means transmitting / receiving a signal carried by the PDCCH.
[0174] 4) DCI
[0175] The DCI may be used for scheduling a data transmission or feedback of a data transmission. For example, the DCI may include information for scheduling the data transmission (e.g., for a downlink / uplink data transmission or a sidelink (SL) data transmission) and / or power control (e.g., uplink power control, or sidelink power control, or downlink power control) .
[0176] User Equipment (UE) position information is often used in cellular communication networks to improve various performance metrics for the network. Such performance metrics may, for example, include capacity, agility, and efficiency. The improvement may be achieved when elements of the network exploit the position, the behavior, the mobility pattern, etc., of the UE in the context of a priori information describing a wireless environment in which the UE is operating.
[0177] A sensing system may be used to help gather UE pose information, including its location in a global coordinate system, its velocity and direction of movement in the global coordinate system, orientation information, and the information about the wireless environment. "Location" is also known as "position" and these two terms may be used interchangeably herein. Examples of well-known sensing systems include RADAR (Radio Detection and Ranging) and LIDAR (Light Detection and Ranging) . While the sensing system can be separate from the communication system, it could be advantageous to gather the information using an integrated system, which reduces the hardware (and cost) in the system as well as the time, frequency, or spatial resources needed to achieve both functionalities. However, using the communication system hardware to perform sensing of UE pose and environment information is a highly challenging and open problem. The difficulty of the problem relates to factors such as the limited resolution of the communication system, the dynamicity of the environment, and the huge number of objects whose electromagnetic properties and position are to be estimated.
[0178] Accordingly, integrated sensing and communication (also known as integrated communication and sensing, joint sensing and communication, and other similar names) is a desirable feature in existing and future communication systems.
[0179] Various types of sensing are anticipated to be parts of future wireless communication systems. Sensing not only can help to improve the quality of other services such as data communication, but also can be defined as a separate service itself in the future wireless systems. Therefore, in future wireless systems, it is expected to have a distributed network of nodes which are capable of performing sensing. Such nodes, referred to as sensing agents (SAs) , may also have limited communication capabilities.
[0180] The waveform used for communication may be unsuitable for sensing. In addition, the sensing process does need to be performed all the time. It is an energy waste for a sensing agent to sense objects all the time.
[0181] Thus, it is a challenge to design a waveform suitable for a sensing agent to save power.
[0182] The main technical solution to solve the above technical problem is that a sensing agent can be triggered to perform sensing in two levels.
[0183] The following describes the implementations of this application in detail with reference to the accompanying drawings.
[0184] In the implementations of this application, a time-frequency resource may be referred to as any one of: a resource, a time-frequency domain resource, a time-frequency resource set, or a time-frequency resource block.
[0185] In the implementations of this application, “and / or” describes an association relationship between associated objects and represents that three relationships may exist. For example, A and / or B may represent the following three cases: only A exists, both A and B exist, and only B exists. The character “ / ” generally indicates an “or” relationship between the associated objects. “At least one” means one or more. “At least one of A and B” , similar to “A and / or B” , describes an association relationship between associated objects and represents that three relationships may exist. For example, at least one of A and B may represent the following three cases: only A exists, both A and B exist, and only B exists.
[0186] The sensing signal will be introduced in the following paragraphs.
[0187] Properties of a sensing signal, or a signal used for both sensing and communication, include the waveform of the signal and the frame structure of the signal. The frame structure defines the time-domain boundaries of the signal. The waveform describes the shape of the signal as a function of time and frequency. Examples of waveforms that can be used for a sensing signal include ultra-wide band (UWB) pulse, Frequency-Modulated Continuous Wave (FMCW) or “chirp” , orthogonal frequency-division multiplexing (OFDM) , cyclic prefix (CP) -OFDM, and Discrete Fourier Transform spread (DFT-s) -OFDM.
[0188] In some implementations, the sensing signal is a linear chirp signal with bandwidth B and time duration T.A linear chirp signal may also be known as a linearly frequency modulated (LFM) signal. Such a linear chirp signal is generally known from its use in FMCW radar systems. A linear chirp signal is defined by an increase in frequency from an initial frequency, fchirp, at an initial time, tchirp, to a final frequency, fchirp1, at a final time, tchirp1 where the relation between the frequency (f) and time (t) can be expressed as a linear relation of f-fchirp=α(t-tchirp) , where is defined as the chirp slope. Instead of the term “chirp slope, ” the same parameter may also be referred to as a chirp rate, an LFM slope and an LFM rate. The bandwidth of the linear chirp signal may be defined as B=fchirp-fchirp0 and the time duration of the linear chirp signal may be defined as T=tchirp-tchirp . Such linear chirp signal can be presented as in the baseband representation.
[0189] FIG. 6 illustrates a diagram of discrete LFM sequence according to an implementation of this application.
[0190] Discrete LFM sequence can be obtained by taking samples from a continuous LFM waveform. An LFM waveform is a waveform for which the frequency is a linear function of time. FIG. 6 shows an example of discrete LFM sequence. In FIG. 6, T is the total time duration of the continuous waveform the samples are taken from, Ts is the sampling time, N is the total number of samples, NS=N×TS, u is the LFM rate of the discrete LFM sequence, and s is the initial frequency of the discrete LFM sequence.
[0191] Considering the discrete LFM sequence, it may be assumed that there are M possibilities for LFM rate u denoted by and there are N possibilities for s denoted by Consequently, the set of all sequence parameters in this case can be written as The sensing signal (or other signals in the present disclosure) can be defined as:
[0192]
[0193]
[0194] where wi, g denotes the discrete LFM sequence characterized by LFM rate ui and initial frequency sg , bi,g∈ {0, 1} is a binary selection parameter which determines if wi, g is present in the waveform or not, and qi, g represents the QAM symbol embedded onto wi, g. Note that the information not only can be embedded onto the QAM symbols, but also can be embedded onto the selection parameters. More specifically, the presence or absence of wi, g can carry a bit of information. {bi, g}i, g and {qi, g}i, g are referred to as data embedding parameters and are referred to as discrete LFM sequence configuration parameters.
[0195] Aspects of the present application relate to configuration parameters for a general type of discrete triangular waveform.
[0196] Aspects of the present application relate to configuration parameters for a general type of modified ZC sequence.
[0197] FIG. 7 illustrates a diagram of discrete triangular waveform according to an implementation of this application.
[0198] With reference to FIG 7, a general discrete triangular waveform may be generated from two discrete LFM waveforms. The general discrete triangular waveform can be mathematically described as:
[0199] where x [n] is representative of an nth sample of the general discrete triangular waveform.
[0200] Additionally, T (in seconds) is the total duration of the triangular waveform and Ts (in seconds) is the time between subsequent samples. Furthermore, the general discrete triangular waveform may be understood to be subject to conditions, such as u1u2<0, and T= (N1+N2) Ts. The representation of the sequence, x, may be understood to have six independent parameters, namely, u1, u2, s1, N1, N2 and Ts.
[0201] An alternative for using the general discrete triangular waveform is to use a pair of ZC sequences, wherein one of the ZC sequences has been modified to preserve phase continuity at the intersection of the two ZC sequences. The pair of ZC sequences may be understood to include a first ZC sequence and a second ZC sequence. The first ZC sequence may be described as having a first root, u1, and a first length, N1. The second ZC sequence may be described as having a second root, u2, and a second length, N2.
[0202] The discrete triangular waveform generated based on the pair of ZC sequences can be mathematically described as:
[0203] Notably, the second ZC sequence has a modification compared to the standard form of a ZC sequence. A frequency offset term, has been added to help establish phase continuity at the intersection of the two sequences, with It is notable that the frequency offset term is not mandatory but the frequency offset term does provide advantageous phase continuity. The above representation of sequence x has five independent parameters, namely, u1, u2, N1, N2 and Ts.
[0204] Aspects of the present application relate to characterizing a first special case of the general discrete triangular waveform described hereinbefore. The first special case may be characterized based on an assumption that u1N1=-u2N2. This special property may be shown to help to preserve continuity of the signal in the time-frequency domain when multiple discrete triangular waveforms are multiplexed in time, as will be discussed hereinafter. FIG. 8 illustrates an example of discrete triangular waveform in this first special case.
[0205] FIG. 8 illustrates another diagram of discrete triangular waveform according to an implementation of this application.
[0206] Notably, the assumption that u1N1=-u2N2 reduces the number of independent parameters by one. As a consequence, it may be said that this first special case has five independent parameters. Notably, the five independent parameters may be expected to include s1 and Ts, with the remaining three parameters selected from among four parameters, u1, u2, N1, N2. For example, s1 and Ts may be selected along with u1, N1 and N2. Although a function, may be used to obtain u2 based on u1, N1 and N2, it may be considered to be more efficient to simply substitute any time u2 would have been used. After such a substitution, the first special case of the discrete triangular waveform may be mathematically described as:
[0207] One alternative for using the first special case of discrete triangular waveform provided hereinbefore, involves using a pair of ZC sequences, where one of the ZC sequences has been modified to preserve phase continuity at the intersection of the two ZC sequences. The pair of ZC sequences may be understood to include a first ZC sequence with a first root, u1, and a first length, N1. The pair of ZC sequences may be understood to include a second ZC sequence with a second root, u2, and a second length, N2. The first special case discrete triangular waveform generated based on the pair of ZC sequences can be mathematically described as:
[0208] Notably, the second ZC sequence has a modification compared to the standard form of a ZC sequence. A frequency offset term, has been added to help establish phase continuity at the intersection of the two sequences, with The second root may be obtained using the function described hereinbefore, It is notable that the frequency offset term is not mandatory but the frequency offset term does provide advantageous phase continuity. The above representation of sequence x has four independent parameters, namely, u1, N1, N2 and Ts.
[0209] Aspects of the present application relate to characterizing a second special case of the general discrete triangular waveform described hereinbefore. The second special case of the discrete triangular waveform may be characterized in that and Using parameters, u and N , that are non-specific to the first LFM waveform or the second LFM waveform, the second special case of the discrete triangular waveform may be mathematically described as:
[0210] FIG. 9 illustrates another diagram of discrete triangular waveform according to an implementation of this application.
[0211] FIG. 9 illustrates an example of the second special case (symmetric) of the discrete triangular waveform. Notably, the second special case (symmetric) of the discrete triangular waveform can be characterized with four independent parameters, namely, u, N, s1 and Ts. Furthermore, the second special case (symmetric) of the discrete triangular waveform may be found to be consistent with the assumption, u1N1=-u2N2 , that was discussed, hereinbefore, in the context of the first special case discrete triangular waveform. For the second special case (symmetric) of the discrete triangular waveform, the assumption may be restated as
[0212] One alternative for using the second special case (symmetric) of discrete triangular waveform provided hereinbefore, involves using a pair of ZC sequences, where one of the ZC sequences has been modified to preserve phase continuity at the intersection of the two ZC sequences. The pair of ZC sequences may be understood to include a first ZC sequence with a first root, u, and a length, The pair of ZC sequences may be understood to include a second ZC sequence with a second root, -u, and a length, The second special case (symmetric) of the discrete triangular waveform generated based on the pair of ZC sequences may be mathematically described as:
[0213] Notably, the second ZC sequence has a modification compared to the standard form of a ZC sequence. A frequency offset term, has been added to help establish phase continuity at the intersection of the two sequences, with s3=-u (N+2) . It is notable that the frequency offset term is not mandatory but the frequency offset term does provide advantageous phase continuity. The above representation of sequence x has three independent parameters, namely, u, N and Ts.
[0214] The signals generated based on linear frequency modulation (LFM) are known for their potential for low complexity processing. Such signals are referred to as chirp-based signals or LFM-based signals in this disclosure. It is known that LFM-based signals can be processed using operations mostly in RF analog domain which can reduce the power consumption significantly. In some implementations, LFM signals or LFM-based signals include any waveforms based on LFM signal shapes. For example, LFM signals or LFM waveforms may be used to generally refer to chirp waveforms, triangular chirp waveforms, FMCW waveforms, etc.
[0215] Referring to FIG. 10, FIG. 10 is a schematic flowchart of a method for signal configuration according to an implementation of this application. The method may be performed by a first device, or performed by a chip, a circuit, or a processing system configured in the first device. The method applies the first device as an example of conducting entities.
[0216] In some implementations, the first device can be referred to as a sensing agent, a sensing node or a sensing agent head. And the second device can be referred to as a base station. The first device is used for conducting sensing process and the second device is used to configure the first device. In addition, a position of the first device and a position of the second device is known. In other words, the distance between the first device and the second device is fixed.
[0217] It is expected to have a network of sensing nodes, referred to as sensing agents (also may be referred to as SA heads) in the present disclosure, in the future wireless systems. Sensing agents (SAs) are capable of performing various types of sensing operations such as mono-static sensing, bi-static sensing, and multi-static sensing. Furthermore, SAs may have limited communication capabilities enabling them to communicate with the network nodes such as TRPs as well as other SAs.
[0218] At step 1010, the first device obtains first information indicative of configuration of a first sensing signal corresponding to a first stage sensing.
[0219] In some implementations, the first information may include an indication associated with the first stage sensing.
[0220] The configurations for different sensing stages are pre-configured to the first device. The first device can determine the configuration of the first sensing signal based on the pre-configured configurations for different sensing stages and the first information.
[0221] In some implementations, the first information may include the configuration of a first sensing signal.
[0222] The configuration of the first sensing signal can be determined directly based on the first information.
[0223] In a possible implementation, if the first information is default in the first device, the first device obtains the first information. Or, the first device receives the first information from a second device. For example, the second device may be a base station.
[0224] Optionally, the first device performs a first sensing procedure corresponding to the first stage sensing based on the configuration of a first sensing signal.
[0225] For example, the first device may be configured to transmit the first sensing signal and / or configured to receive a reflected signal which is generated by the first sensing signal impinged on an object.
[0226] Optionally, if the first device receives the reflected signal, the first device transmits a first sensing report. The first sensing report indicates a new object appears in a sensing coverage of the first device.
[0227] At step 1020, the first device obtains second information indicative of configuration of a second sensing signal corresponding to a second stage sensing.
[0228] In some implementations, the second information may include an indication associated with the second stage sensing.
[0229] In some implementations, the first stage sensing can be referred to as primary sensing and the second stage sensing can be referred to as advanced sensing. In other words, a sensing assignment of the first stage sensing is easier than a sensing assignment of the second stage sensing. For example, the first stage sensing is used to sense whether a new object appears in a sensing coverage and the second stage sensing is used to sense details of the new object.
[0230] The configurations for different sensing stages are pre-configured to the first device. The first device can determine the configuration of the second sensing signal based on the pre-configured configurations for different sensing stages and the second information.
[0231] The implementation of this application introduced the first stage sensing and the second stage sensing as an example. This application does not limit the number of the sensing stages.
[0232] In some implementations, the second information may include the configuration of a second sensing signal.
[0233] The configuration of the second sensing signal can be determined directly based on the second information.
[0234] In a possible implementation, if the second information is default in the first device, the first device obtains the second information. Or, the first device receives the second information from a second device. For example, the second device may be a base station.
[0235] In some implementations, the second device, for example, the base station, may define some sensing stages. It may be understood that, when the base station finds that no new object appears in the coverage area, the first device, for example, the sensing agent, in the coverage area only needs to perform primary sensing, that is, sense whether a new object appears. In this case, sensing agents do not need to do very complex calculations, but only need to detect whether they exist. However, when physical existence has been detected within the coverage of the sensing agent, further identification needs to be performed. For example, an area of the object needs to be detected to help distinguish whether the object is a car or a bus. In this scenario, Some new configuration information is required to support the sensing agent to send new signals to achieve this goal. As an example, Table 1 presents perception phases and the corresponding configuration information defined by a potential standard.
[0236] Table 1 definition of sensing stage
[0237] The stage 1 in Table 1 can be referred to as the first stage sensing and the stage 2 in Table 1 can be referred to as the second stage sensing.
[0238] Considering that sensing phases and requirements are different, the base station needs to configure different sensing information according to different sensing phases and requirements, and the sensing agent can perform better sensing processing according to different sensing information. Therefore, the core idea of the present patent is to configure different sensing parameter sets according to different sensing phases. The sensing set includes but is not limited to the following parameter sets:
[0239] Set of parameters bound to the sensing primary stage, which is also referred to as the first stage sensing:
[0240] 1, Bandwidth set
[0241] 2, Subchannel set
[0242] 3, Perceptual signal sending interval
[0243] 4, Perception period set
[0244] 5, Waveform Selection Set
[0245] Set of parameters bound to the sensing advanced stage, which is also referred to as the second stage sensing:
[0246] 1, Bandwidth set
[0247] 2, Subchannel set
[0248] 3, frequency domain hopping pattern set
[0249] 4, Set of the start frequency positions.
[0250] 5, Perception period set
[0251] 6, continuous sensing signal period
[0252] 7, A set of advanced phase-based sensing parameters broadcast to other UEs
[0253] 8, Waveform Selection Set
[0254] Compare the common parameters of the primary stage and the advanced stage of perception. The characteristics should be as follows:
[0255] 1, Although the parameters are the same, the specific configuration values or sets should be different.
[0256] 2, If bandwidth sets are configured for both, the bandwidth set in the sensing advanced stage should be larger than the bandwidth set in the sensing primary stage. In other words, a first bandwidth corresponding to the first stage sensing is smaller than a second bandwidth corresponding to the second stage sensing.
[0257] 3, If the set of subchannels is configured, the set of subchannels in the sensing advanced stage should be smaller than the set of the sensing primary stage. In other words, an amount of the second sub-channels corresponding to the second stage sensing is smaller than an amount of the first sub-channels corresponding to the first stage sensing.
[0258] 4, If the sensing period set is configured, the sensing period in the sensing advanced phase should be greater than the sensing period in the sensing primary phase. In other words, a first sensing period corresponding to the first stage sensing is smaller than a second sensing period corresponding to the second stage sensing.
[0259] 5, At least one waveform in the waveform selection set in the sensing advanced stage is a Chirp waveform.
[0260] The parameter set may be preconfigured, and is notified to the SA by using RRC, MAC-CE signaling, or DCI. Each SA may select one or more parameters in the set according to the ID of the SA to configure its own information, that is, the parameters in the set are ID-related.
[0261] In some implementations, the configurations corresponding to different sensing stages shown in Table 1 may be preconfigured for the first device, for example the sensing agent. Or, the configuration of a first sensing signal corresponding to the first stage sensing or the configuration of a second sensing signal corresponding to the second stage sensing can be transmitted to the first device directly.
[0262] Optionally, the first device performs a second sensing procedure corresponding to the second stage sensing based on the configuration of a second sensing signal.
[0263] For example, the first device may be configured to transmit the second sensing signal and / or configured to receive a reflected signal which is generated by the second sensing signal impinged on an object.
[0264] Optionally, if the first device receives the reflected signal, the first device transmits a second sensing report. The second sensing report includes the details of the new object appears in a sensing coverage of the first device.
[0265] In the foregoing method, for different sensing purposes, the first device does not use the same configuration of the sensing signal. The first device can use different sensing signals with different configurations to conduct a sensing process. So, the sensing signal is more suitable for different sensing purposes. It will at least contribute to save the power of the first device or reduce the interference with other signals. For example, if the first stage sensing is used to sense whether a new object appears in a sensing coverage, the configuration of the first sensing signal is more suitable. This technical solution prevents the first device from using a uniform sensing signal in all sensing scenarios so that the power of the first device can be saved.
[0266] Referring to FIG. 11, FIG. 11 is a schematic flowchart of a method for signal configuration according to an implementation of this application. The method may be performed between a first device and a second device, or performed by a chip, a circuit, or a processing system configured in the first device and the second device. The communication method applies the first device and the second device as an example of conducting entities.
[0267] In some implementations, the first device can be referred to as a sensing agent, a sensing node or a sensing agent head. And the second device can be referred to as a base station. The first device is used for conducting sensing process and the second device is used to configure the first device. In addition, a position of the first device and a position of the second device is known. In other words, the distance between the first device and the second device is fixed.
[0268] The (a) of FIG. 11 illustrates one scenario of a method for signal configuration according to an implementation of this application. In this scenario, the first information is default in the first device.
[0269] At step a-1110, the first device obtains first information indicative of configuration of a first sensing signal corresponding to a first stage sensing.
[0270] The first information may include configuration corresponding to the first stage sensing.
[0271] In some implementations, the first device determines the first sensing signal according to the configuration corresponding to the first stage sensing.
[0272] As an alternative step of the step a-1110, the second device transmits, and accordingly, the first device receives the first information.
[0273] At step a-1120, the first device performs a first sensing procedure corresponding to the first stage sensing.
[0274] For example, the first device transmits the first sensing signal.
[0275] For example, the first device transmits the first sensing signal and receives a reflected signal which is generated by impinging the first sensing signal on an object.
[0276] For example, the first device receives a reflected signal associated with the first sensing signal which is transmitted by another sensing device, for example, another sensing agent.
[0277] In other words, the first device may transmit a sensing signal and / or receive a reflected signal associated with the sensing signal.
[0278] Optionally, at step a-1130, the first device transmits, and accordingly, the second device receives a first sensing report.
[0279] The first sensing report indicates a new object appears in a sensing coverage of the first device.
[0280] At step a-1140, the second device transmits, and accordingly, the first device receives second information indicative configuration of a second sensing signal corresponding to a second stage sensing.
[0281] The first stage sensing and the second stage sensing are described above, and they are not repeated here.
[0282] In some implementations, if the first device is preconfigured the configuration of the second sensing signal, the first device determines the second sensing signal according to pre-configured configuration and the second information which includes an indication of the second stage sensing.
[0283] In some implementations, if the first device is not preconfigured the configuration of the second sensing signal, the first device determines the second sensing signal according to the second information which includes the configuration of the second sensing signal.
[0284] At step a-1150, the first device performs a second sensing procedure corresponding to the second stage sensing.
[0285] For example, the first device transmits the second sensing signal.
[0286] For example, the first device transmits the second sensing signal and receives a reflected signal which is generated by impinging the second sensing signal on an object.
[0287] For example, the first device receives a reflected signal associated with the second sensing signal which is transmitted by another sensing device, for example, another sensing agent.
[0288] Optionally, at step a-1160, the first device transmits, and accordingly, the second device receives a second sensing report.
[0289] The second sensing report includes the details of the new object appears in a sensing coverage of the first device.
[0290] The (b) of FIG. 11 illustrates another scenario of a method for signal configuration according to an implementation of this application. In this scenario, the second information is default in the first device.
[0291] At step b-1110, the second device transmits, and accordingly, the first device receives first information indicative of configuration of a first sensing signal corresponding to a first stage sensing.
[0292] The first stage sensing is described above, and it is not repeated here.
[0293] In some implementations, if the first device is preconfigured the configuration of the first sensing signal, the first device determines the first sensing signal according to pre-configured configuration and the first information which includes an indication of the first stage sensing.
[0294] In some implementations, if the first device is not preconfigured the configuration of the first sensing signal, the first device determines the first sensing signal according to the first information which includes the configuration of the first sensing signal.
[0295] At step b-1120, the first device performs a first sensing procedure corresponding to the first stage sensing.
[0296] The step b-1120 is similar with the step a-1120 in the (a) of FIG. 11, details of the step b-1120 can refer to the step a-1120.
[0297] Optionally, at step b-1130, the first device transmits, and accordingly, the second device receives a first sensing report.
[0298] The first sensing report indicates a new object appears in a sensing coverage of the first device.
[0299] At step b-1140, the first device obtains the second information indicative of configuration of a second sensing signal corresponding to a second stage sensing.
[0300] The second information may include the configuration corresponding to the second stage sensing.
[0301] In some implementations, the first device determines the second sensing signal according to the configuration of the second stage sensing.
[0302] As an alternative step of the step b-1140, the second device transmits, and accordingly, the first device receives the second information.
[0303] At step b-1150, the first device performs a second sensing procedure corresponding to the second stage sensing.
[0304] The step b-1150 is similar with the step a-1150 in the (a) of FIG. 11, details of the step b-1150 can refer to the step a-1150.
[0305] Optionally, at step b-1160, the first device transmits, and accordingly, the second device receives a second sensing report.
[0306] The second sensing report includes the details of the new object appears in a sensing coverage of the first device.
[0307] The following will introduce the configuration of the first sensing signal corresponding to the first stage sensing and the configuration of the second sensing signal corresponding to the second stage sensing in details.
[0308] The configuration information in the Table 1 may be preconfigured for all the sensing agents (for example, stage 1 and stage 2 shown in the Table 1) . Then, when the sensing is required, the base station sends signaling of a sensing stage to the sensing agent. The sensing agent selects a group of configuration information from the pre-configured information set according to the received sensing stage indication. Generate a transmitted signal, send the signal, and perform sensing according to the received signal. Note that the received signal herein may be a sensing signal sent by and received by the sensing agent, or may be a sensing signal sent by another sensing agent and received by the sensing agent.
[0309] The information and reasons for configuring in sensing stage 1, which is also referred to as the first stage sensing, are introduced as following. The following use a sensing agent and a base station as an example.
[0310] In some implementations, the first information indicates a first bandwidth of the first sensing signal corresponding to the first stage sensing.
[0311] In some implementations, a set of transmission bandwidths may be included in the preconfigured set of the sensing stage 1, which is also referred to as the first stage sensing. When the base station sends the signaling sensing agent to perform sensing stage 1, the task of the sensing agent is to perceive whether a new object appears in the area covered by the sensing agent. Therefore, for this purpose, the sensing agent does not need to transmit a large bandwidth. Therefore, the bandwidth configured in the preconfigured transmission bandwidth set should be small, for example, 4.32 Mhz bandwidth, or 5 M bandwidth. The sensing agent may select, according to the signaling of the base station, for example, a specific indication of the transmission bandwidth, or according to a preconfigured bandwidth set, one of the bandwidths for sending. The specific indication of the transmission bandwidth is an example of the first information. Or the first information may include an indication of the first stage sensing. Then the sensing agent can select the first bandwidth from a pre-configured set of transmission bandwidths corresponding to the first stage sensing.
[0312] In some implementations, the first information further indicates one or more first sub-channels of the first sensing signal.
[0313] For example, if M represents a system bandwidth, a represents the first bandwidth and n represents an amount of a set of sub-channels, the relationship between them may be M=n*a. The set of sub-channels includes the one or more first sub-channels of the first sensing signal.
[0314] In some implementations, a set of sub-channels may be included in the pre-configured set of the sensing stage 1, which is also referred to as the first stage sensing. When the transmission bandwidth is set to a small value, the entire system bandwidth is divided into more sub-channels. For example, if the system bandwidth (M) is 100 Mhz and the transmission bandwidth, which is also referred to as the first bandwidth (a) , is 5 Mhz, the entire system bandwidth may be divided into 20 sub-channels. The amount of the set of sub-channels may be 20.
[0315] In some implementations, the set of sub-channels include one or more third sub-channels of a third sensing signal. The third sensing signal of another sensing device corresponds to the first stage sensing. The one or more third sub-channels and the one or more first sub-channels are nonoverlapping.
[0316] The base station may preconfigure a set, for example, {1-5} sub-channels are a transmission subset. However, the sensing agent may use any sub-channel in the set, for example, the one or more first sub-channels in the set, to send a signal, and another sensing agent may use another sub-channel subset, for example, the one or more third sub-channels in the set, to send a signal. Therefore, in a frequency domain, different sensing agents have different signal transmission locations, thereby avoiding signal collision between different sensing agents. Therefore, the base station preconfigures a plurality of sub-channel subsets, and instructs different sensing agents to use different sub-channel subsets. This subset may be related to transmission bandwidth, and may be corresponding to different sub-channel subsets when transmission bandwidths are different.
[0317] For example, the first information may include a first bandwidth range of the first sub-channels.
[0318] The sensing agent may determine the first sub-channels based on the first bandwidth range and the first bandwidth. For example, if the first bandwidth range can be from 0 MHz to 25 MHz and the first bandwidth is 5MHz, the sensing agent can determine {1-5} sub-channels are the one or more first sub-channels.
[0319] For example, the first information may include an index of the one or more first sub-channels.
[0320] The set of sub-channels is pre-defined in the sensing agent. The sensing agent may determine the first sub-channels based on the index in the first information. For example, the set of sub-channels may include 20 sub-channels. If the first information may include {1-5} sub-channels, the sensing agent can determine {1-5} sub-channels are the one or more first sub-channels.
[0321] For example, the first information may include an index of first bandwidth range corresponding to the first sub-channels.
[0322] The bandwidth range of sub-channels can be divided into several sets and the several sets are pre-configured into the sensing agent. If the first information may include an index of first bandwidth range corresponding to the first sub-channels, the sensing agent may determine the one or more first sub-channels based on the index of first bandwidth range and the first bandwidth. For example, if the index of the first bandwidth range is 1, the first bandwidth range can be determined based on the pre-configured sets and the index of the first bandwidth. As an example, the first bandwidth can be from 0 MHz to 25 MHz and the first bandwidth is 5MHz, the sensing agent can determine {1-5} sub-channels are the one or more first sub-channels.
[0323] For example, the first information may include an index of sub-channels set corresponding to the one or more first sub-channels.
[0324] The sub-channels can be divided into several sets and the several sets of the sub-channels are pre-configured into the sensing agent. If the first information may include an index of sub-channels set corresponding to the one or more first sub-channels, the sensing agent may determine the first sub-channels based on the index of sub-channels set and the pre-configured the several sets of the sub-channels. For example, the set of sub-channels may include 20 sub-channels which are divided into 4 sets of the sub-channels, e.g. first sub-channels set may include {1-5} sub-channels; second sub-channels set may include {6-10} sub-channels; third sub-channels set may include {11-15} sub-channels; and fourth sub-channels set may include {16-20} sub-channels. If the index of sub-channels set is first, the sensing agent can determine {1-5} sub-channels are the one or more first sub-channels.
[0325] In some implementations, the first information further indicates a sweeping direction and a sweeping time of one or more beams corresponding to the first stage sensing. And the sweeping direction is oriented to a definite position which is indicated to another sensing device. And the sweeping time is associated with a definite time which is indicated to the another sensing device.
[0326] The sweeping direction may include a sweeping range. The sweeping directions of different sensing devices can be different but are oriented to the definite position. In other words, the sweeping directions of the different sensing devices may be oriented to the same position. The definite time can be a time point or a time duration. The definite time of different sensing devices can be the same.
[0327] FIG. 12 illustrates a diagram of beam sweeping for the sensing agents according to an implementation of this application.
[0328] In some implementations, the preconfigured set of the sensing stage 1, which is also referred to as the first stage sensing, may include a set of spatial domain beams. This information is mainly used to indicate how beam sweeping is performed for each sensor agent. If pre-configuration is not performed and each sensor agent performs beam sweeping, relatively severe interference may occur on neighboring sensor agents. Therefore, each sensor agent uniformly performs beam sweeping based on a same time period and a same direction, so that all beams can be scanned in a shortest time, and interference between sensor agents is avoided as much as possible. As shown in FIG. 12, at the first beam sweep moment (T1) , each sensor agent uses the first beam indication (direction) to transmit information. At the second beam sweep moment (T2) , all the sensor agents switch to the second beam indication (direction) to transmit information.
[0329] As shown in FIG. 12, there are three sensing agents. Each sensing agent may obtain the first information indicating a sweeping direction and a sweeping time. The sweeping directions for different sensing agents are different but are associated with a definite position. At the first beam sweep moment T1, these three sensing agents transmit information oriented to the same position. At the second beam sweep moment T2, these sensing agents transmit information oriented to the same position.
[0330] In some implementations, the first information further indicates a waveform type of the first sensing signal; and the waveform type of the first sensing signal comprises one of the following: orthogonal frequency division multiplexing (OFDM) , discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) , or linearly frequency modulated (LFM) waveform.
[0331] In some implementations, the preconfigured set of the sensing stage 1, which is also referred to as the first stage sensing, may include a transmittable waveform selection. In other words, the first information indicates a waveform type of the first sensing signal. This set may contain {OFDM, DFT-s-OFDM, LFM } . The sensing agent may select one or two waveforms from the set for sensing of the sensing agent and uplink (transmission information to the base station, for example, sensing information reporting) transmission of the sensing agent.
[0332] In a possible implementation, the waveform type of the first sensing signal and a waveform type of an uplink signal can be same or different.
[0333] FIG. 13 illustrates a diagram of waveform transmission for the sensing agents according to an implementation of this application.
[0334] As shown in FIG. 13, the first possible case is that the uplink and sensing use the OFDM waveform. This is because in the case of the first stage sensing, a requirement on perception precision is not very high, and an existing waveform used in the 5G standard, for example, an OFDM / DFT-s-OFDM waveform, may be used for transmission. The advantage of using such a waveform is that it can be compatible with other transmitting users without causing interference. And it can also be perceived.
[0335] In other words, as shown in FIG. 13, the waveform type of the first sensing signal and the uplink signal is the same, for example, the OFDM waveform can be applied to the first sensing and the uplink signal. So, the interference can be avoided in this scenario.
[0336] FIG. 14 illustrates a diagram of waveform transmission for the sensing agents according to an implementation of this application.
[0337] As shown in FIG. 14, another possible case is that the uplink of the sensing agent (transmitting information to the base station, for example, reporting sensing information) uses the OFDM waveform, and the LFM waveform is used for sensing. In the case of the first stage sensing, the OFDM / DFT-s-OFDM waveform is used in the uplink to ensure that the sensing agent shares the uplink with other UEs and there is no interference, and the LFM waveform is used in the sensing to obtain the best perception performance.
[0338] In other words, as shown in FIG. 14, the waveform type of the uplink signal may be an exiting waveform used in the 5G standard and for better perception performance, the waveform type of the first sensing signal may be LFM waveform.
[0339] FIG. 15 illustrates a diagram of waveform transmission for the sensing agents according to an implementation of this application.
[0340] As shown in FIG. 15, another possible case is that the uplink (transmission of information to the base station, for example, reporting of sensing information) and sensing of the sensing agent use the LFM waveform. In the case of the first stage sensing, using the LFM waveform in the uplink may cause certain interference. However, for the sensing agent, sending the LFM waveform in the uplink may use the lowest power to transmit, and because there may be little uplink information at this time, The LFM waveform also be able to carry information. The best perception performance is obtained using the LFM waveform.
[0341] In other words, as shown in FIG. 15, the waveform type of the first sensing signal and the uplink signal is the same, for example, the LFM waveform can be applied to the first sensing and the uplink signal. A better perception performance can be guaranteed in this scenario.
[0342] Different from the first stage sensing, the second stage sensing has more specific perception requirements and purposes. Therefore, the pre-configuration information of the second stage sensing is different from that of the first stage sensing.
[0343] In some implementations, the first information indicates a first bandwidth of the first sensing signal corresponding to the first stage sensing. And the second information indicates a second bandwidth of the second sensing signal corresponding to the second stage sensing; wherein the first bandwidth is smaller than the second bandwidth.
[0344] In some implementations, the preconfigured set of the sensing stage 2, which is also referred to as the second stage sensing, may include a set of transmission bandwidths. When the base station sends a signaling sensing agent to perform sensing in the sensing stage 2, a task of the sensing agent may mainly be to identify a specific reflection point of an object. Therefore, for this purpose, the sensing agent needs to transmit a large bandwidth to distinguish the reflected paths as much as possible, so as to restore as many reflected points as possible, and finally project information into a plane. Therefore, the bandwidth configured in the preconfigured transmission bandwidth set should be relatively large or very large, for example, a bandwidth of 100 Mhz, or a bandwidth of 200 Mhz or even 400 Mhz. The sensing agent may select, according to the signaling of the base station, for example, a specific indication of the transmission bandwidth, or according to a preconfigured bandwidth set, one of the bandwidths for sending. For example, when a surface multi-point target of a general object needs to be sensed, a 100 Mhz bandwidth may be used for transmission. When the need to sense a vehicle, or a multi-point target on a more complex surface of an object, the 400 Mhz bandwidth can be used for transmission.
[0345] The second information may include a specific second bandwidth corresponding to the second stage sensing. Or, the second information may include an indication of the second stage sensing. Then, the sensing agent can select the second bandwidth from a pre-configured set of transmission bandwidths corresponding to the second stage sensing. The second bandwidth corresponding to the second stage sensing is bigger than the first bandwidth corresponding to the first stage sensing.
[0346] In some implementations, the first information further indicates a first start offset frequency of the first sensing signal. And the second information further indicates a second start offset frequency of the second sensing signal. The first start offset frequency is smaller than the second start offset frequency.
[0347] In a possible implementation, another sensing agent obtains a second information. A third start offset frequency corresponding to the second stage sensing indicated by the second information is different from the second start offset frequency.
[0348] In some implementations, the preconfigured set of the sensing stage 2, which is also referred to as the second stage sensing, may include the start offset frequency f_start set. The start offset frequency domain is used so that when different sensor agents use different start offset frequencies, a received signal sees a shift at different frequency positions, so that transmitted signals of different sensor agents can be separated, thereby avoiding severe interference. This configuration is applicable to high-bandwidth scenarios because the sensing agent cannot strictly divide all Chirp signals in high-bandwidth scenarios. For example, for a signal bandwidth of 100 Mhz, the start offset frequency f_start may be preconfigured as {10Mhz, 20Mhz, 30Mhz, 40Mhz, 50Mhz, 60Mhz, 70Mhz, 80Mhz, 90Mhz, 100Mhz} . Each sensing agent sends a signal by selecting a different pre-configured starting offset frequency. By configuring different frequency offsets, the bandwidth of the system can be reused as much as possible when the interference is low.
[0349] For example, an expression for a different frequency offset may be expressed as:
[0350]
[0351] FIG. 16 illustrates a diagram of a chirp signal with no frequency offset and with frequency offset according to an implementation of this application.
[0352] A frequency of a corresponding transmitted signal may change with time as shown in FIG. 16.
[0353] As shown in the (a) of FIG. 16, the chirp signal is without frequency offset. And as shown in the (b) of FIG. 16, the chirp signal is with frequency offset.
[0354] Another expression for different frequency offsets may be expressed as:
[0355] If
[0356]
[0357]
[0358] FIG. 17 illustrates a diagram of another chirp signal with no frequency offset and with frequency offset according to an implementation of this application.
[0359] A frequency of a corresponding transmitted signal may change with time as shown in FIG. 17.
[0360] As shown in of FIG. 17, the chirp signal of low power sensing agent (LPSA) 2 is without frequency offset. As shown in of FIG. 17 and shown in of FIG 17, the chirp signal of LPSA 1 is with frequency offset and the chirp signal of LPSA 3 is with frequency offset. However, the frequency offset corresponding to LPSA 1 is different from the frequency offset corresponding to LPSA 3.
[0361] Both methods can reuse as much bandwidth as possible in the case of low interference.
[0362] Although this configuration is about the second start offset frequency in the second stage sensing, it is generally possible that the configuration may also appear in the first stage sensing. Obviously, in the first stage sensing, the configured value is much smaller, because the system bandwidth used by sensing is much smaller than that in the second stage snesing.
[0363] In some implementations, the first information further indicates one or more first sub-channels of the first sensing signal. And the second information further indicates one or more second sub-channels of the second sensing signal; wherein an amount of the second sub-channels is smaller than an amount of the first sub-channels.
[0364] The second sub-channels related to the second information is similar with the first sub-channels related to the first information.
[0365] For example, the second information may include a second bandwidth range of the second sub-channels.
[0366] For example, the second information may include an index of the one or more second sub-channels. The set of sub-channels is pre-defined in the sensing agent. The sensing agent may determine the second sub-channels based on the index in the second information.
[0367] For example, the second information may include an index of second bandwidth range corresponding to the second sub-channels.
[0368] For example, the second information may include an index of sub-channels set corresponding to the one or more second sub-channels. The sub-channels can be divided into several sets and the several sets of the sub-channels are pre-configured into the sensing agent. If the second information may include an index of sub-channels set corresponding to the one or more second sub-channels, the sensing agent may determine the second sub-channels based on the index of sub-channels set and the pre-configured the several sets of the sub-channels.
[0369] In some implementations, the second information further indicates a frequency of the second sensing signal varies on different symbols.
[0370] In some implementations, the preconfigured set of the sensing stage 2, which is also referred to as the second stage sensing, may include a frequency hopping pattern set. The frequency modulation pattern indicates that the frequency position of the transmitted signal varies on different symbols. How to change is given by the frequency modulation pattern. As shown in FIG. 18. In other words, the second information further indicates the frequency modulation pattern.
[0371] FIG. 18 illustrates a diagram of different hopping pattern for different sensing agents according to an implementation of this application.
[0372] It can be seen that, for the sensing agent 1, which is LPSA 1 shown in FIG. 18, the frequency hopping pattern is {1, 2} , which indicates that at the first moment T0, the sensing agent sends a signal on the subchannel 1, which is Sub-c #1 shown in of FIG. 18, and at the second moment T1, the bandwidth of the sending signal of the sensing agent 1 is changed to the subchannel 2, which is Sub-c #2 shown in FIG. 18. For the sensing agent 2, which is LPSA 2 shown in of FIG. 18, the frequency hopping pattern is {2, 1} , indicating that at the first moment T0, the sensing agent sends a signal on the subchannel 2, which is Sub-c #2 shown in of FIG. 18, and at the second moment T1, the bandwidth of the sending signal of the sensing agent is changed to subchannel 1, which is Sub-c #1 shown in of FIG. 18. By using this method, the sensing agent 1 and the sensing agent 2 can ensure that transmission is free of interference. However, a partial collision pattern may also be designed. For example, the frequency hopping pattern of the sensing agent 3, which is LPSA 3 shown in of FIG. 18, is {1, 1} , indicating that the sensing agent 3 sends a signal on the subchannel 1 at a first moment T0, and a bandwidth for sending a signal by the sensing agent 3 remains unchanged at a second moment T1. The sensing agent 3 is partially collided with both the sensing agent 1 and the sensing agent 2. When other parameters are well designed, the pattern of partial collision can increase the number of users on the multiplexed subchannels and keep the interference as low as possible.
[0373] Although we will discuss this configuration in Stage 2, it is generally possible that the configuration may also appear in Stage 1. In other words, the first information may further indicate a frequency of the first sensing signal varies on different symbols.
[0374] In some implementations, the first information further indicates a first sensing period of the first sensing signal and the second information further indicates a second sensing period of the second sensing signal. The first sensing period is shorter than the second sensing period.
[0375] In some implementations, the second sensing period is associated with a speed of the object.
[0376] In some implementations, the second information further indicates a first time interval of a first object and a second time interval of a second object. The first time interval is between the end of a sensing period for the first object and a time for reporting the sensing information of the first object. The second time interval is between the end of a sensing period for the second object and a time for reporting the sensing information of the second object. The speed of the first object is faster than the speed of the second object. The first time interval is smaller than the second time interval.
[0377] In some implementations, the second information further indicates a first reporting period of a first object is smaller than a second reporting period of a second object. The speed of the first object is faster than the speed of the second object.
[0378] In some implementations, the pre-configured set of the sensing stage 2, which is also referred to as the second stage sensing, may include a sensing period set for the high-speed movement. The For those targets with high speed moving tracking need, a specified sets can be given: i.e. longer sensing period, smaller report period. is shown in FIG. 19.
[0379] FIG. 19 illustrates a diagram of different sensing periods for high speed sensing case according to an implementation of this application.
[0380] As shown in FIG. 19, fast moving objective should have a longer sensing period and shorter response period to achieve a better sensing performance. Therefore, the eNodeB, which is also be referred to as the base station, may configure additional sensing and reporting resources for high-speed moving scenarios, as shown in FIG. 19. For example, if a UAV moving at a speed of 300 km / h needs to be tracked, a longer sensing period is required for more accurate Doppler information tracking. It is also hoped that the sensing information can be reported as soon as possible. If the interval is too long, the information will be aged and meaningless. Therefore, the pre-configured sensing reporting information may be associated. In a high-speed moving scenario, a long sensing period may be configured, and it is limited that a time for reporting the sensing information after the sensing period ends should not be longer than a threshold, for example, 5 ms, after the sensing is complete. The base station needs to reserve a corresponding uplink resource for specific reporting information.
[0381] In some implementation, the second information further indicates a waveform type of the second sensing signal. And the waveform type of the second sensing signal may be OFDM or LFM.
[0382] In some implementations, the pre-configured set of the sensing stage 2, which is also referred to as the second stage sensing, may include enhanced waveform selection. This set may contain {OFDM, LFM } . LFM waveforms may be used to generally refer to chirp waveforms, triangle chirp waveforms, FWCW waveforms, etc. The sensing agent may select one or two waveforms from the set for sensing of the sensing agent and uplink (information transmission to the base station, for example, sensing information reporting) transmission of the sensing agent. As shown in the following figure, the first possible scenario is that the uplink and sensing use the OFDM waveform. This is because in the case of stage 1, a requirement on perception precision is not very high, and an existing waveform used in the 5G standard may be used for transmission. This is because in some scenarios, for example, a high-speed scenario, the Triangle waveform has better perception performance than the chirp waveforms Therefore, new waveform options may be configured for the application scenario of Stage 2. The DFT-s-OFDM waveform, however, may not be used in Stage 2 due to its poor frequency domain flatness.
[0383] FIG. 20 illustrates a diagram of different waveform selection for the second stage sensing according to an implementation of this application.
[0384] As shown in FIG. 20, for low speed, the second information may indicate the chirp waveform as the waveform type of the second sensing signal. For high speed, the second information may indicate the Triangle waveform as the waveform type of the second sensing signal.
[0385] In some implementations, the configuration of the second sensing signal is transmitted to a user equipment (UE) and the configuration of the second sensing signal indicates the UE to keep silent in a time and frequency resource corresponding to the configuration of the second sensing signal.
[0386] In a possible implantation, the base station transmits, and accordingly, the UE the second information indicative of the configuration of the second sensing signal used for the second stage sensing. The second information may indicate the configuration corresponding to the second stage sensing.
[0387] For example, the second information may include the configuration corresponding to the second stage sensing.
[0388] For example, the configuration corresponding to the second stage sensing is preconfigured in the UE. The second information may include an indication of the second stage sensing.
[0389] In some implementations, the sensing stage 2, which is also referred to as the second stage sensing, may further include configuration information of the sensing agent that is broadcast to all the UEs. This is because in the sensing stage 2, the sensing agent often requires a larger bandwidth and a longer sensing period. Therefore, it is difficult to avoid interference with other conventional UEs or sidelink UEs. In this case, if the base station may notify other UEs of the sensing bandwidth, the resources used in the time domain, and the resources used in the frequency domain of the sensing agents, these resources are generally pre-configured and do not change in a period of time. Other UEs may choose to remain silent and not transmit or receive any information during these times.
[0390] FIG. 21 illustrates a diagram of a scenario for UE to keep silence according to an implementation of this application.
[0391] As shown in FIG. 21, the UE will keep silence in the time and frequency resource for the second stage sensing. For example, if the time and frequency resource for sidelink transmission of UE is overlapped with the time and frequency resource for the second stage sensing of the sensing agent, the UE will keep silence.
[0392] FIG. 22 illustrates a diagram of a scenario for UE to keep silence according to an implementation of this application.
[0393] As shown in FIG. 22, the TRP can broadcast, and accordingly, the UE can receive the second information indicative of the configuration corresponding to the second stage sensing. During the sensing period, the UE may keep silence.
[0394] The method for signal configuration proposed in the implementations of the present application is described in detail above, and an apparatus for signal configuration provided by the present application will be described below.
[0395] FIG. 23 is a schematic block diagram of an apparatus 1000 according to some implementations of the present application. The apparatus may be a communication device or an apparatus implemented in a communication device and capable of realizing corresponding functions of any one of the implementations of the present application. For example, the apparatus implemented in a communication device may be an integrated circuit, which in some contexts may be known by other colloquial names, such as chip, modem, modem chip, baseband chip, or baseband processor. In some implementations, one or more integrated circuits can be packaged into a system-on-chip, a system-in-package, or a multi-chip module. The apparatus may include one or more integrated circuits or include one or more integrated circuits and other discrete components. The communication device may be a signal transmitter, a signal receiver, or an apparatus implemented in any one of these communication devices.
[0396] The apparatus 1000 includes a communication module 1200. The communication module 1200 is configured to implement a transmitting action and / or a receiving action. The communication module 1200 also may be called as transceiver module, a transceiver, or a transceiver device, or the like, and is configured to implement operations of receiving (which may be referred to as inputting) and / or transmitting (which may be referred to as outputting) .
[0397] The apparatus 1000 may further include a processing module 1100. The processing module 1100 may be a processor, a processing circuit, a processing board, a processing unit, or a processing device, or the like. The processing module 1100 is configured to implement processing and / or operations implemented inside the communication apparatus except transmitting actions and / or receiving actions.
[0398] For example, if the apparatus 1000 corresponds to the first device in FIG. 10 or FIG. 11, the apparatus 1000 is configured to obtain first information indicative of configuration of a first sensing signal used for a first stage sensing. The apparatus 1000 is configured to obtain second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0399] In some implementations, the communication module 1200 is configured to receive first information indicative of configuration of a first sensing signal used for a first stage sensing. The processing module 1100 is configured to obtain second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0400] In some implementations, the processing module 1100 is configured to obtain first information indicative of configuration of a first sensing signal used for a first stage sensing. The communication module 1200 is configured to receive second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0401] In some implementations, the communication module 1200 is configured to receive first information indicative of configuration of a first sensing signal used for a first stage sensing. The communication module 1200 is configured to receive second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0402] In some implementations, the processing module 1100 is configured to obtain first information indicative of configuration of a first sensing signal used for a first stage sensing. The processing module 1100 is configured to obtain second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0403] For example, if the apparatus 1000 corresponds to the second device in FIG. 10 or FIG. 11, the communication module 1200 is configured to transmit first information indicative of configuration of a first sensing signal used for a first stage sensing. The communication module 1200 is further configured to transmit second information indicative of configuration of a second sensing signal used for a second stage sensing. The first information is different from the second information.
[0404] Briefly, the operations and / or functions of the apparatus 1000 are intended to implement corresponding steps of the foregoing method implementations.
[0405] FIG. 24 is a schematic block diagram of an apparatus according to some implementations of the present application. The apparatus 2000 includes at least one communication interface 2300, and the at least one communication interface 2300 is configured to input and / or output information or data. Optionally, the apparatus 2000 may further include at least one processor 2100. The at least one processor 2100 is coupled to at least one memory 2200. The at least one memory 2200 is configured to store one or more instructions and / or executable computer code. The at least one processor 2100 is configured to invoke the one or more instructions and / or executable computer code, so that the communication apparatus 2000 implements the method provided in the implementations of the present application. Optionally, the apparatus 2000 may further include the at least one memory 2200.
[0406] In an implementation, the apparatus 2000 may be any one of the communication devices in the method implementations. For example, the communication apparatus 2000 may be the first device (for example, a sensing agent) or the second device (for example, a base station) . In this implementation, the processor 2100 may be a baseband apparatus, and the communication interface 2300 may be a radio frequency apparatus.
[0407] In another implementation, the apparatus 2000 may be implemented in a communication device such as the transmitter sensing node and the receiver sensing node. In this case, the apparatus may be an integrated circuit, which in some contexts may be known by other colloquial names, such as chip, modem, modem chip, baseband chip, or baseband processor. In some implementations, one or more integrated circuits can be packaged into a system-on-chip, a system-in-package, or a multi-chip module. The apparatus may include one or more integrated circuits or include one or more integrated circuits and other discrete components. In this implementation, the processor 2100 may be a logical module or circuit that is part of the integrated circuit. The communication interface 2300 may be a transceiver, an interface circuit, an input / output interface, a bus, a module, a pin, or other types of interfaces.
[0408] An implementation of the present application further provides a system for signal configuration. The system may include the first device and the second device introduced in the above implementations. For example, as shown in FIG. 11, the communication system may include a base station and a sensing agent.
[0409] An implementation of the present application further provides a computer storage medium, and the computer storage medium may store one or more instructions for executing any of the foregoing methods.
[0410] An implementation of the present application further provides a computer program product, and the computer program product may store one or more instructions for executing any of the foregoing methods.
[0411] In the implementations of this application, “and / or” describes an association relationship between associated objects and represents that three relationships may exist. For example, A and / or B may represent the following three cases: Only A exists, both A and B exist, and only B exists. The character “ / ” generally indicates an “or” relationship between the associated objects. “At least one” means one or more. “At least one of A and B” , similar to “A and / or B” , describes an association relationship between associated objects and represents that three relationships may exist. For example, at least one of A and B may represent the following three cases: Only A exists, both A and B exist, and only B exists.
[0412] Besides, the use of a singular form of “a” , “an” and “the” in the implementations of the present application and the claims appended hereto is also intended to include a plural form, unless otherwise clearly indicated herein by context. The terms "a" or "an" are defined to mean "at least one" , that is, these terms do not exclude a plural number of items, unless stated otherwise.
[0413] In the present disclosure, terms such as "substantially" , "generally" and "about" , which modify a value, condition or characteristic of a feature of an example embodiment, should be understood to mean that the value, condition or characteristic is defined within tolerances that are acceptable for the proper operation of the example embodiment for its intended application.
[0414] In the present disclosure, unless stated otherwise, the terms "connected" and "coupled" , and derivatives and variants thereof, refer herein to any structural or functional connection or coupling, either direct or indirect, between two or more elements. For example, the connection or coupling between the elements can be acoustical, mechanical, optical, electrical, thermal, logical, or any combinations thereof.
[0415] In the present disclosure, expressions such as "match" , "matching" and "matched" , including variants and derivatives thereof, are intended to refer herein to a condition in which two or more elements are either the same or within some predetermined tolerance of each other. That is, these terms are meant to encompass not only "exactly" or "identically" matching the two elements but also "substantially" , "approximately" or "subjectively" matching the two or more elements, as well as providing a higher or best match among a plurality of matching possibilities.
[0416] In the present disclosure, the expression "based on" is intended to mean "based at least partially on" , that is, this expression can mean "based solely on" or "based partially on" , and so should not be interpreted in a limited manner. More particularly, the expression "based on" could also be understood as meaning "depending on" , "representative of" , "indicative of" , "associated with" or similar expressions.
[0417] In the present disclosure, the terms "system" and "network" may be used interchangeably in different embodiments of this application. "At least one" means one or more, and "a plurality of" means two or more. The term "and / or" describes an association relationship of associated objects, and indicates that three relationships may exist. For example, A and / or B may indicate the following three cases: Only A exists, both A and B exist, and only B exists, where A and B may be singular or plural. The character " / " indicates an "or" relationship between associated objects. "At least one of the following items (pieces) " or a similar expression thereof indicates any combination of these items, including a single item (piece) or any combination of a plurality of items (pieces) . For example, "at least one of A, B, or C" includes: only A; only B; only C; A and B; A and C; B and C; or A, B, and C, and "at least one of A, B, and C" may also be understood as including: only A; only B; only C; A and B; A and C; B and C; or A, B, and C. In addition, unless otherwise specified, ordinal numbers such as "first" and "second" in embodiments of this application are used to distinguish between a plurality of objects, and are not used to limit a sequence, a time sequence, priorities, or importance of the plurality of objects.
[0418] A person skilled in the art should understand that embodiments of this application may be provided as a method, an apparatus (or system) , computer-readable storage medium, or a computer program product. Therefore, this application may use a form of a hardware-only embodiment, a software-only embodiment, or an embodiment with a combination of software and hardware. Moreover, this application may use a form of a computer program product that is implemented on one or more computer-usable storage media (including but not limited to a disk memory, an optical memory, and the like) that include computer-usable program code.
[0419] This application is described with reference to the flowcharts and / or block diagrams of the method, the device (system) , and the computer program product according to this application. It should be understood that computer program instructions may be used to implement each process and / or each block in the flowcharts and / or the block diagrams and a combination of a process and / or a block in the flowcharts and / or the block diagrams. The computer program instructions may be provided for a general-purpose computer, a dedicated computer, an embedded processor, or a processor of another programmable data processing device and enable a machine to execute the instructions. When executed by any computer or the processor of a programmable data processing device, the instructions cause the apparatus to implement specific functions as described in one or more procedures in the flowcharts and / or one or more blocks in the block diagrams. The computer program instructions may alternatively be stored in a computer-readable memory that can indicate a computer or another programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate an artifact that includes an instruction apparatus. The instruction apparatus implements a specific function in one or more procedures in the flowcharts and / or one or more blocks in the block diagrams.
[0420] The computer program instructions may alternatively be loaded onto a computer or another programmable data processing device, so that a series of operations and steps are performed on the computer or the another programmable device, so that computer-implemented processing is generated. Therefore, the instructions executed on the computer or on another programmable device provide steps for implementing specific functions as described in one or more procedures in the flowcharts and / or one or more blocks in the block diagrams.
[0421] It is clear that a person skilled in the art can make various modifications and variations to this application without departing from the scope of this disclosure. This disclosure is intended to cover these modifications and variations of this application provided that they fall within the scope of protection defined by the following claims and their equivalent technologies.
[0422] A person of ordinary skill in the art will be aware that, in combination with the examples described in the implementations disclosed in this specification, units and algorithm steps may be implemented by using electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed by using hardware or software depends on particular applications and design constraint conditions of the technical solutions. A person skilled in the art may use different methods to implement the described functions for each particular application, but it should not be considered that the implementation goes beyond the scope of this application.
[0423] It would be understood by a person skilled in the art that, for the purpose of convenience and brevity, in a detailed working process of the foregoing system, apparatus, and unit, reference may be made to a corresponding process in the foregoing method implementations, and details are not described herein again.
[0424] In the several implementations provided in this application, the disclosed system, apparatus, and method may be implemented in other manners. For example, the described apparatus implementation is merely an example. For example, the unit division is a logical function division and other methods of division may be used in an actual implementation. For example, a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not performed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented using various communication interfaces. The indirect couplings or communication connections between the apparatuses or units may be implemented in electronic, mechanical, or other forms.
[0425] In addition, function units in the implementations of this application may be integrated into one processing unit, each of the units may exist alone physically, or two or more units may be integrated into one unit.
[0426] When the functions are implemented in the form of a software functional unit and sold or used as an independent product, the functions may be stored in a computer-readable storage medium. The technical solutions of this application may be implemented in the form of a software product. The software product is stored in a storage medium, and includes several instructions for instructing a computer device (which may be a personal computer, a server, a network device, or the like) to perform all or some of the steps of the methods described in the implementations of this application. The foregoing storage medium includes any medium that can store program code, such as a USB flash drive, a removable hard disk, a ROM, a RAM, a magnetic disk, an optical disc or the like.
[0427] The units described as separate parts may be or may not be physically separate, and parts displayed as units may be or may not be physical units, may be located in one position, or may be distributed on a plurality of network units. Some or all of the units may be selected based on actual requirements to achieve the objectives of the solutions of the implementations. In addition, functional units in the implementations of this application may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units are integrated into one unit.
[0428] The foregoing descriptions are merely specific implementations of this application, but are not intended to limit the protection scope of this application. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in this application shall fall within the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.
Claims
A method comprising:obtaining first information indicative of configuration of a first sensing signal used for a first stage sensing; andobtaining second information indicative of configuration of a second sensing signal used for a second stage sensing;wherein the first information is different from the second information.The method according to claim 1, after the obtaining first information and before the obtaining second information, the method further comprising:performing a sensing procedure corresponding to the first stage sensing based on the configuration of the first sensing signal.The method according to claim 1 or 2, wherein the first information indicates a first bandwidth of the first sensing signal corresponding to the first stage sensing; and the second information indicates a second bandwidth of the second sensing signal corresponding to the second stage sensing; wherein the first bandwidth is smaller than the second bandwidth.The method according to claim 3, wherein the first information further indicates a first start offset frequency of the first sensing signal; and the second information further indicates a second start offset frequency of the second sensing signal; wherein the first start offset frequency is smaller than the second start offset frequency.The method according to claim 3 or 4, wherein the first information further indicates one or more first sub-channels of the first sensing signal and the second information further indicates one or more second sub-channels of the second sensing signal; wherein an amount of the second sub-channels is smaller than an amount of the first sub-channels.The method according to anyone of claims 3 to 5, wherein the first information further indicates a first sensing period of the first sensing signal and the second information further indicates a second sensing period of the second sensing signal; wherein the first sensing period is shorter than the second sensing period.The method according to anyone of claims 3 to 6, wherein the first information further indicates a sweeping direction and a sweeping time of one or more beams corresponding to the first stage sensing; and the sweeping direction is oriented to a definite position which is indicated to another sensing device; and the sweeping time is associated with a definite time which is indicated to the another sensing device.The method according to anyone of claims 3 to 6, wherein the first information further indicates a waveform type of the first sensing signal; and the waveform type of the first sensing signal is one of: orthogonal frequency division multiplexing (OFDM) , discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) , or a linearly frequency modulated (LFM) waveform.The method according to anyone of claims 3 to 6, wherein the second information further indicates a frequency of the second sensing signal varies on different symbols.The method according to anyone of claims 3 to 6, wherein the second information further indicates a waveform type of the second sensing signal; and the waveform type of the second sensing signal is OFDM, or LFM.The method according to anyone of claims 1 to 10, wherein the configuration of the second sensing signal is transmitted to a user equipment (UE) and the configuration of the second sensing signal indicates the UE to keep silent in a time and frequency resource corresponding to the configuration of the second sensing signal.A method comprising:transmitting first information indicative of configuration of a first sensing signal used for a first stage sensing; andtransmitting obtaining second information indicative of configuration of a second sensing signal used for a second stage sensing;wherein the first information is different from the second information.The method according to claim 12, wherein the first information indicates a first bandwidth of the first sensing signal corresponding to the first stage sensing; and the second information indicates a second bandwidth of the second sensing signal corresponding to the second stage sensing; wherein the first bandwidth is smaller than the second bandwidth.The method according to claim 13, wherein the first information further indicates a first start offset frequency of the first sensing signal; and the second information further indicates a second start offset frequency of the second sensing signal; wherein the first start offset frequency is smaller than the second start offset frequency.The method according to claim 13 or 14, wherein the first information further indicates one or more first sub-channels of the first sensing signal and the second information further indicates one or more second sub-channels of the second sensing signal; wherein an amount of the second sub-channels is smaller than an amount of the first sub-channels.The method according to anyone of claims 13 to 15, wherein the first information further indicates a first sensing period of the first sensing signal and the second information further indicates a second sensing period of the second sensing signal; wherein the first sensing period is shorter than the second sensing period.The method according to anyone of claims 13 to 16, wherein the first information further indicates a sweeping direction and a sweeping time of one or more beams corresponding to the first stage sensing; and the sweeping direction is oriented to a definite position which is indicated to another sensing device; and the sweeping time is associated with a definite time which is indicated to the another sensing device.The method according to anyone of claims 13 to 16, wherein the first information further indicates a waveform type of the first sensing signal; and the waveform type of the first sensing signal comprises one of the following: orthogonal frequency division multiplexing (OFDM) , discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) , or linearly frequency modulated (LFM) waveform.The method according to anyone of claims 13 to 16, wherein the second information further indicates a frequency of the second sensing signal varies on different symbols.The method according to anyone of claims 13 to 16, wherein the second information further indicates a waveform type of the second sensing signal; and the waveform type of the second sensing signal is OFDM, or LFM.The method according to anyone of claims 12 to 20, the method further comprising:transmitting the configuration of the second sensing signal to a user equipment (UE) ; wherein the configuration of the second sensing signal indicates the UE to keep silent in a time and frequency resource corresponding to the configuration of the second sensing signal.An apparatus comprising an obtaining unit configured to:obtain first information indicative of configuration of a first sensing signal used for a first stage sensing; andobtain second information indicative of configuration of a second sensing signal used for a second stage sensing; wherein the first information is different from the second information.The apparatus according to claim 22, the apparatus further comprising:a processing unit configured to perform a sensing procedure corresponding to the first stage sensing based on the configuration of a first sensing signal.The apparatus according to claim 22 or 23, further configured to perform the method of any one of claims 3 to 11.An apparatus comprising a transmitting unit configured to:transmit first information indicative of configuration of a first sensing signal used for a first stage sensing; andtransmit obtaining second information indicative of configuration of a second sensing signal used for a second stage sensing;wherein the first information is different from the second information.The apparatus according to claim 25, further configured to perform the method of any one of claims 13 to 20.The apparatus according to anyone of claims 25 or 26,wherein the transmitting unit is further configured to transmit the configuration of the second sensing signal to a user equipment (UE) ; wherein the configuration of the second sensing signal indicates the UE to keep silent in a time and frequency resource corresponding to the configuration of the second sensing signal.An apparatus comprising:one or more processors, configured to perform a processing step according to any one of claims 1 to 11 or 12 to 21;an interface circuit, configured to perform a transmitting or receiving step according to any one of claims 1 to 11 or 12 to 21.The communication apparatus of claim 28, wherein the interface circuit comprises one or more transceivers.An apparatus comprising: one or more processors; anda memory storing instructions which, when executed by the one or more processors, cause the apparatus to perform the method of any one of claims 1 to 11 or 12 to 21.A system comprising a first apparatus configured to perform the method of any one of claims 1 to 11 and a second apparatus configured to perform the method of any one of claims 12 to 21.A computer-readable storage medium having instructions stored thereon which, when executed by an apparatus, cause the apparatus to perform the method of any one of 1 to 11 or 12 to 21.A computer program product storing instructions which, when executed, cause an apparatus to perform the method of any one of claims 1 to 11 or 12 to 21.
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