Method and device for switching sensing mode

Abstract

Provided are a method by which a first device performs wireless communication, and a device supporting same. The method may comprise the steps of: performing monostatic sensing on a target object; and acquiring a distance measurement value between the first device and the target object. For example, switching from the monostatic sensing to bistatic sensing for the target object may be based on the distance measurement value and a first threshold value.

Description

Method and device for switching sensing modes

[0001] The present disclosure relates to a wireless communication system.

[0002] 5G NR, the successor to LTE (long-term evolution), is a new clean-slate mobile communications system characterized by high performance, low latency, and high availability. 5G NR can utilize all available spectrum resources, from low-frequency bands below 1 GHz, mid-frequency bands between 1 GHz and 10 GHz, and high-frequency (millimeter wave) bands above 24 GHz.

[0003] The 6G (wireless communication) system aims to achieve (i) very high data rates per device, (ii) a very large number of connected devices, (iii) global connectivity, (iv) very low latency, (v) low energy consumption for battery-free Internet of Things (IoT) devices, (vi) ultra-reliable connectivity, and (vii) connected intelligence with machine learning capabilities. The vision of the 6G system can be divided into four aspects: intelligent connectivity, deep connectivity, holographic connectivity, and ubiquitous connectivity, and the 6G system can satisfy the requirements as shown in Table 1 below. For example, Table 1 can represent an example of the requirements of a 6G system.

[0004] Per device peak data rate 1 Tbps E2E latency 1 ms Maximum spectral efficiency 100 bps / Hz Mobility support Up to 1000 km / hr Satellite integration Fully AI Fully autonomous vehicle Fully XR Fully haptic communication Fully

[0005] In one embodiment, a method of performing wireless communication by a first device is provided. The method may include the steps of performing monostatic sensing of a target object; and obtaining a distance measurement value between the first device and the target object. For example, switching from monostatic sensing to bistatic sensing of the target object may be based on the distance measurement value and a first threshold value.

[0006] In one embodiment, a first device configured to perform wireless communication is provided. The first device may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the first device to: perform monostatic sensing of a target object; and obtain a distance measurement between the first device and the target object. For example, switching from the monostatic sensing to the bistatic sensing of the target object may be based on the distance measurement and a first threshold.

[0007] In one embodiment, a processing device configured to control a first device is provided. The processing device includes at least one processor; and at least one memory coupled to the at least one processor and storing instructions, wherein the instructions, when executed by the at least one processor, cause the first device to: perform monostatic sensing of a target object; and obtain a distance measurement between the first device and the target object. For example, switching from the monostatic sensing to the bistatic sensing of the target object may be based on the distance measurement and a first threshold.

[0008] In one embodiment, a non-transitory computer-readable storage medium having instructions recorded thereon is provided. The instructions, when executed, may cause a first device to: perform monostatic sensing of a target object; and obtain a distance measurement between the first device and the target object. For example, switching from monostatic sensing to bistatic sensing of the target object may be based on the distance measurement and a first threshold value.

[0009] Figure 1 illustrates a device-to-device communication procedure according to one embodiment of the present disclosure.

[0010] FIG. 2 illustrates a radio protocol architecture according to one embodiment of the present disclosure.

[0011] FIG. 3 illustrates the structure of a wireless frame according to one embodiment of the present disclosure.

[0012] FIG. 4 illustrates a slot structure of a frame according to one embodiment of the present disclosure.

[0013] FIG. 5 illustrates an example of a BWP according to one embodiment of the present disclosure.

[0014] FIG. 6 illustrates a communication structure that can be provided in a 6G system according to one embodiment of the present disclosure.

[0015] FIG. 7 illustrates an example of a communication scenario based on a 6G system according to one embodiment of the present disclosure.

[0016] FIG. 8 illustrates an example of a sensing operation according to one embodiment of the present disclosure.

[0017] FIG. 9 illustrates a method for switching a sensing mode from monostatic sensing to bistatic sensing according to one embodiment of the present disclosure.

[0018] FIG. 10 illustrates a method for switching a sensing mode from monostatic sensing to bistatic sensing according to one embodiment of the present disclosure.

[0019] FIG. 11 illustrates a method for a first device to perform wireless communication according to one embodiment of the present disclosure.

[0020] FIG. 12 illustrates a method for a second device to perform wireless communication according to one embodiment of the present disclosure.

[0021] FIG. 13 illustrates a communication system (1) according to one embodiment of the present disclosure.

[0022] FIG. 14 illustrates a wireless device according to an embodiment of the present disclosure.

[0023] FIG. 15 illustrates a signal processing circuit for a transmission signal according to one embodiment of the present disclosure.

[0024] FIG. 16 illustrates a wireless device according to one embodiment of the present disclosure.

[0025] FIG. 17 illustrates a mobile device according to one embodiment of the present disclosure.

[0026] In this disclosure, "A or B" can mean "only A," "only B," or "both A and B." In other words, "A or B" in this disclosure can be interpreted as "A and / or B." For example, "A, B or C" in this disclosure can mean "only A," "only B," "only C," or "any combination of A, B and C."

[0027] As used herein, a slash ( / ) or a comma may mean "and / or." For example, "A / B" may mean "A and / or B." Accordingly, "A / B" may mean "only A," "only B," or "both A and B." For example, "A, B, C" may mean "A, B, or C."

[0028] In the present disclosure, “at least one of A and B” may mean “only A,” “only B,” or “both A and B.” Additionally, in the present disclosure, the expressions “at least one of A or B” or “at least one of A and / or B” may be interpreted identically to “at least one of A and B.”

[0029] Additionally, in the present disclosure, “at least one of A, B and C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.” Additionally, “at least one of A, B or C” or “at least one of A, B and / or C” can mean “at least one of A, B and C.”

[0030] Additionally, parentheses used in the present disclosure may mean "for example." Specifically, when indicated as "control information (PDCCH)", "PDCCH" may be proposed as an example of "control information." In other words, "control information" in the present disclosure is not limited to "PDCCH," and "PDCCH" may be proposed as an example of "control information." Furthermore, even when indicated as "control information (i.e., PDCCH)", "PDCCH" may be proposed as an example of "control information."

[0031] In the following explanation, ‘when, if, in case of’ can be replaced with ‘based on’.

[0032] Technical features individually described in one drawing in this disclosure may be implemented individually or simultaneously.

[0033] In the present disclosure, higher layer parameters may be parameters set for the terminal, preset, or predefined. For example, a base station or network may transmit higher layer parameters to the terminal. For example, the higher layer parameters may be transmitted via radio resource control (RRC) signaling or medium access control (MAC) signaling.

[0034] In the present disclosure, "setting or defining" may be interpreted as being set or preset to a device through predefined signaling (e.g., SIB, MAC, RRC) from a base station or a network. In the present disclosure, "setting or defining" may be interpreted as being preset to a device. In the present disclosure, "setting or defining" may be interpreted as being set or preset to a device through predefined signaling (e.g., MAC, RRC, SCI (sidelink control information), device-to-device signaling control information, etc.) from another device. In the present disclosure, "setting or defining" may be interpreted as being preset to a device.

[0035] In the present disclosure, a user equipment (UE) may refer to a device, a portable device, a wireless device, etc. In the present disclosure, a base station (BS) may refer to a radio access network (RAN) node, a non-terrestrial network (NTN) cell / node, a transmission reception point (TRP), a network, an integrated access and backhaul (IAB) node, a device, a portable device, a wireless device, etc.

[0036] The technology proposed in the present disclosure can be used in various wireless communication systems such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented with wireless technologies such as UTRA (universal terrestrial radio access) or CDMA2000. TDMA can be implemented with wireless technologies such as GSM (global system for mobile communications) / GPRS (general packet radio service) / EDGE (enhanced data rates for GSM evolution). OFDMA can be implemented with wireless technologies such as IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, E-UTRA (evolved UTRA), LTE (long term evolution), and 5G NR.

[0037] The technology proposed in this disclosure can be implemented with 6G wireless technology and applied to various 6G systems. For example, 6G systems can have key factors such as enhanced mobile broadband (eMBB), ultra-reliable low latency communications (URLLC), massive machine-type communication (mMTC), artificial intelligence (AI) integrated communication, tactile internet, high throughput, high network capacity, high energy efficiency, low backhaul and access network congestion, and enhanced data security.

[0038] FIG. 1 illustrates a device-to-device communication procedure according to one embodiment of the present disclosure. The embodiment of FIG. 1 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0039] Referring to FIG. 1, in step S101, a first device and a second device can perform synchronization. For example, the first device can be a terminal and / or at least one of the devices proposed in the present disclosure. For example, the second device can be a base station, a network, a RAN node, an NTN node / cell, a TRP, a terminal and / or at least one of the devices proposed in the present disclosure. For example, the first device can perform an initial cell search operation. For example, the first device can detect at least one synchronization signal transmitted by the second device according to a predefined rule. Here, for example, the synchronization signal can include a plurality of synchronization signals classified according to a structure or purpose (e.g., a primary synchronization signal, a secondary synchronization signal, etc.). Through this, the first device can identify the boundaries of the frame, subframe, time unit, slot, and / or symbol of the second device, and the first device can obtain information about the second device (e.g., a cell identifier).

[0040] In step S103, the first device can obtain system information transmitted by the second device. For example, the system information may include information related to the properties, characteristics, and / or capabilities of the second device required to connect to the second device and use the service. For example, the system information may be classified according to content (e.g., whether it is essential for connection), transmission structure (e.g., channel used, whether provided on-demand), etc. For example, the system information may be classified into a master information block (MIB) and a system information block (SIB). For example, if necessary, the first device may transmit a signal requesting system information prior to receiving the system information. For example, the request and provision of system information may be performed after a random access procedure described below.

[0041] In step S105, the first device and the second device can perform a random access procedure. For example, the first device can transmit and / or receive at least one message (e.g., a random access preamble, a random access response message, etc.) for the random access procedure based on information related to a random access channel of the second device obtained through system information (e.g., channel location, channel structure, structure of supported preamble, etc.). For example, the first device can transmit a preamble (e.g., Msg1) through the random access channel, the first device can receive a random access response message (e.g., Msg2), the first device can transmit a message (e.g., Msg3) including information related to the first device (e.g., identification information) to the second device using scheduling information included in the random access response message, and the first device can receive a message (e.g., Msg4) for contention resolution and / or connection establishment. For example, Msg1 and Msg3 can be sent and received as one message (e.g., MsgA), and / or Msg2 and Msg4 can be sent and received as one message (e.g., MsgB).

[0042] In step S107, the first device and the second device may perform signaling of control information. Here, for example, the control information may be defined in various layers, such as a layer that controls a connection (e.g., a radio resource control (RRC) layer), a layer that handles mapping between logical channels and transport channels (e.g., a media access control (MAC) layer), a layer that handles physical channels (e.g., a physical (PHY) layer), etc. For example, the first device and the second device may perform at least one of signaling for establishing a connection, signaling for determining settings related to communication, and / or signaling for indicating allocated resources. For example, the control information may be signaled / transmitted via a control channel. For example, the control information and / or the control channel may be used to schedule at least one of data, a data channel (e.g., a shared channel), and / or control information on the data channel.

[0043] In step S109, the first device and the second device may transmit and / or receive data. For example, the first device and the second device may process, transmit, and / or receive data based on signaling of control information. For example, when transmitting data, the first device or the second device may perform at least one of channel encoding, rate matching, scrambling, constellation mapping, layer mapping, waveform modulation, antenna mapping, and / or resource mapping on the information bits. For example, when receiving data, the first device or the second device may perform at least one of signal extraction from resources, waveform demodulation for each antenna, signal arrangement considering layer mapping, constellation demapping, descrambling, and / or channel decoding.

[0044] For example, the layers of a radio interface protocol between a first device and a second device can be divided into L1 (layer 1), L2 (layer 2), L3 (layer 3), etc. For example, a physical layer belonging to the first layer can provide an information transfer service using a physical channel, and an RRC (radio resource control) layer located in the third layer can play a role in controlling radio resources between the first device and the second device. For this purpose, for example, the RRC layer can exchange RRC messages between the first device and the second device.

[0045] FIG. 2 illustrates a radio protocol architecture according to an embodiment of the present disclosure. The embodiment of FIG. 2 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted. For example, (a) of FIG. 2 may illustrate a radio protocol stack of a user plane for uplink communication or downlink communication, and (b) of FIG. 2 may illustrate a radio protocol stack of a control plane for uplink communication or downlink communication. For example, (c) of FIG. 2 may illustrate a radio protocol stack of a user plane for device-to-device communication, and (d) of FIG. 2 may illustrate a radio protocol stack of a control plane for device-to-device communication.

[0046] For example, the physical layer can provide information transmission services to upper layers using physical channels. For example, the physical layer can be connected to the upper layer, the medium access control (MAC) layer, through a transport channel. For example, data can be transmitted between the MAC layer and the physical layer through the transport channel. For example, transport channels can be classified according to how and with what characteristics data is transmitted over the wireless interface. For example, data can be transmitted between different physical layers (e.g., between the physical layers of a first device and a second device) through a physical channel. For example, the physical channel can be modulated using an orthogonal frequency division multiplexing (OFDM) scheme, and time and frequency can be utilized as radio resources.

[0047] For example, the MAC layer can provide services to the upper layer, the radio link control (RLC) layer, through logical channels. For example, the MAC layer can provide a mapping function from multiple logical channels to multiple transport channels. For example, the MAC layer can provide a logical channel multiplexing function by mapping multiple logical channels to a single transport channel. For example, the MAC sublayer can provide data transmission services on logical channels.

[0048] For example, the RLC layer can perform concatenation, segmentation, and reassembly of RLC service data units (SDUs). For example, to guarantee the various quality of service (QoS) required by radio bearers (RBs), the RLC layer can provide three operating modes: transparent mode (TM), unacknowledged mode (UM), and acknowledged mode (AM). For example, AM RLC can provide error correction through automatic repeat request (ARQ).

[0049] For example, the RRC (radio resource control) layer can be defined only in the control plane. For example, the RRC layer can be responsible for controlling logical channels, transport channels, and physical channels in relation to the configuration, re-configuration, and release of radio bearers. For example, an RB can mean a logical path provided by a first layer (e.g., a physical layer) and a second layer (e.g., a MAC layer, an RLC layer, a PDCP (packet data convergence protocol) layer, a SDAP (service data adaptation protocol) layer, etc.) for data transmission between a first device and a second device.

[0050] For example, the functions of the PDCP layer in the user plane may include forwarding of user data, header compression, and ciphering. For example, the functions of the PDCP layer in the control plane may include forwarding of control plane data and ciphering / integrity protection.

[0051] For example, establishing an RB can refer to the process of defining the characteristics of the radio protocol layer and channel to provide a specific service, and setting specific parameters and operating methods for each. For example, RBs can be divided into two types: signaling radio bearers (SRBs) and data radio bearers (DRBs). For example, SRBs can be used as a channel to transmit RRC messages in the control plane, while DRBs can be used as a channel to transmit user data in the user plane.

[0052] For example, a downlink transmission channel may include at least one of a broadcast channel (BCH) for transmitting system information, and / or a downlink shared channel (SCH) for transmitting user traffic or control messages. For example, traffic or control messages of a downlink multicast or broadcast service may be transmitted through the downlink SCH, or may be transmitted through a separate downlink multicast channel (MCH). Meanwhile, an uplink transmission channel may include at least one of a random access channel (RACH) for transmitting initial control messages, and / or an uplink shared channel (SCH) for transmitting user traffic or control messages. For example, a logical channel located above a transmission channel and mapped to the transmission channel may include at least one of a broadcast control channel (BCCH), a paging control channel (PCCH), a common control channel (CCCH), a multicast control channel (MCCH), and / or a multicast traffic channel (MTCH).

[0053] FIG. 3 illustrates the structure of a wireless frame according to an embodiment of the present disclosure. The embodiment of FIG. 3 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0054] Referring to FIG. 3, for example, a radio frame may be used in uplink transmission, downlink transmission, and / or device-to-device transmission. For example, a radio frame may have a length of 10 ms and may be defined as two 5 ms half-frames (HF). For example, a half-frame may include five 1 ms subframes (SF). For example, a subframe may be divided into one or more slots, and the number of slots within a subframe may be determined according to a subcarrier spacing (SCS). For example, each slot may include 12 or 14 OFDM (A) symbols, depending on a cyclic prefix (CP).

[0055] For example, when normal CP is used, each slot can contain 14 symbols. For example, when extended CP is used, each slot can contain 12 symbols. Here, for example, the symbols can contain OFDM symbols (or CP-OFDM symbols), SC-FDMA (single carrier-FDMA) symbols (or DFT-s-OFDM (Discrete Fourier Transform-spread-OFDM) symbols).

[0056] Table 2 below shows the number of symbols per slot (N) depending on the SCS setting (u) when normal CP or extended CP is used. slot symb ), number of slots per frame (N frame,u slot ) and the number of slots per subframe (N subframe,u slot) is an example.

[0057] CP type SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot Normal CP15kHz (u=0)1410130kHz (u=1)1420260kHz (u=2)14404120kHz (u=3)14808240kHz (u=4)1416016Extended CP60kHz (u=2)12404

[0058] For example, OFDM(A) numerology (e.g., SCS, CP length, etc.) may be set differently between multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of time resources (e.g., subframes, slots, or transmit time intervals (TTIs)) composed of the same number of symbols may be set differently between the merged cells. For example, in the present disclosure, time resources such as subframes, slots, TTIs, etc. may be referred to as time units.

[0059] For example, multiple numerologies, or SCSs, may be supported to support various services. For example, a 15 kHz SCS may support wide areas in traditional cellular bands, while a 30 kHz / 60 kHz SCS may support dense urban areas, lower latency, and wider carrier bandwidth. For example, a 60 kHz or higher SCS may support bandwidths greater than 24.25 GHz to overcome phase noise.

[0060] FIG. 4 illustrates a slot structure of a frame according to an embodiment of the present disclosure. The embodiment of FIG. 4 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0061] Referring to FIG. 4, for example, a slot may include multiple symbols in the time domain. For example, a carrier may include multiple subcarriers in the frequency domain. For example, a resource block (RB) may be defined as multiple consecutive subcarriers in the frequency domain. For example, a bandwidth part (BWP) may be defined as multiple consecutive (P)RBs ((physical) resource blocks) in the frequency domain, and may correspond to one numerology (e.g., SCS, CP length, etc.). For example, a carrier may include at most N BWPs (where N is a positive integer). For example, data communication may be performed through an activated BWP. For example, each element may be referred to as a resource element (RE) in the resource grid, and one complex symbol may be mapped to it.

[0062] For example, a BWP may be a contiguous set of PRBs in a given numerology. For example, a PRB may be selected from a contiguous subset of common resource blocks (CRBs) for a given numerology on a given carrier.

[0063] For example, the BWP may be at least one of an active BWP, an initial BWP, and / or a default BWP. For example, the UE may not monitor the downlink radio link quality in a DL BWP other than the active DL BWP on the PCell (primary cell). For example, the UE may not receive a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), or a channel state information-reference signal (CSI-RS) (except for radio resource management (RRM)) outside of the active DL BWP. For example, the UE may not trigger channel state information (CSI) reporting for an inactive DL BWP. For example, the UE may not transmit a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) outside of the active UL BWP. For example, for downlink, the initial BWP can be given as a set of consecutive resource blocks (RBs) for the remaining minimum system information (RMSI) CORESET (control resource set) (set by the physical broadcast channel (PBCH)). For uplink, for example, the initial BWP can be given by the system information block (SIB) for the random access procedure. For example, the default BWP can be set by a higher layer. For example, the initial value of the default BWP can be the initial DL BWP.For energy saving, if a terminal does not detect DCI (downlink control information) for a certain period of time, the terminal may switch its active BWP to a default BWP.

[0064] FIG. 5 illustrates an example of a BWP according to an embodiment of the present disclosure. The embodiment of FIG. 5 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted. In the embodiment of FIG. 5, it is assumed that there are three BWPs.

[0065] Referring to FIG. 5, for example, a common resource block (CRB) may be a carrier resource block numbered from one end of a carrier band to the other, and a PRB may be a numbered resource block within each BWP. For example, point A may indicate a common reference point for a resource block grid.

[0066] For example, BWP is point A, offset from point A (N start BWP ) and bandwidth (N size BWP ) can be set by. For example, point A can be an outer reference point of the PRB of a carrier where subcarrier 0 of all numerologies (e.g., all numerologies supported by the network on that carrier) aligns. For example, the offset can be the PRB spacing between the lowest subcarrier in a given numerology and point A. For example, the bandwidth can be the number of PRBs in a given numerology.

[0067] FIG. 6 illustrates a communication structure that can be provided in a 6G system according to an embodiment of the present disclosure. The embodiment of FIG. 6 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0068] As core implementation technologies of the 6G system, technologies such as artificial intelligence (AI), THz (terahertz) communication, optical wireless technology, free-space optical transmission (FSO) backhaul networks, massive MIMO (multiple input multiple output) technology, blockchain, 3D networking, quantum communication, unmanned aerial vehicles, cell-free communication, wireless information and energy transfer (WIET), integration of sensing and communication, integration of access backhaul networks, holographic beamforming, big data analysis, and large intelligent surface (LIS) can be adopted.

[0069] - Artificial Intelligence: Incorporating AI into communications can streamline and improve real-time data transmission. AI can use numerous analytics to determine how complex target tasks should be performed. For example, AI can increase efficiency and reduce processing delays. Time-consuming tasks such as handovers, network selection, and resource scheduling can be performed instantly using AI. AI can also play a crucial role in machine-to-machine (M2M), machine-to-human, and human-to-machine communications. AI can also facilitate rapid communication in brain-computer interfaces (BCIs). AI-based communication systems can be supported by metamaterials, intelligent structures, intelligent networks, intelligent devices, intelligent cognitive radios, self-sustaining wireless networks, and machine learning.

[0070] - THz communication (terahertz communication): Data rates can be increased by increasing the bandwidth. This can be achieved by using sub-THz communication with wide bandwidths and applying advanced massive MIMO technology. THz waves, also known as sub-millimeter waves, typically refer to the frequency range between 0.1 THz and 10 THz, with corresponding wavelengths ranging from 0.03 mm to 3 mm. The 100 GHz to 300 GHz band (sub-THz band) is considered a key part of the THz spectrum for cellular communications. Adding the sub-THz band to the mmWave band will increase the capacity of 6G cellular communications. Among the defined THz bands, 300 GHz to 3 THz lies in the far infrared (IR) frequency band. While part of the optical band, the 300 GHz to 3 THz band lies at the boundary of the optical band, immediately following the RF band. Therefore, this 300 GHz to 3 THz band exhibits similarities to RF. Key characteristics of THz communications include (i) the widely available bandwidth to support very high data rates and (ii) the high path loss that occurs at high frequencies (requiring highly directional antennas). The narrow beamwidths generated by highly directional antennas reduce interference. The small wavelength of THz signals allows for a significantly larger number of antenna elements to be integrated into devices and base stations operating in this band. This enables the use of advanced adaptive array technologies to overcome range limitations.

[0071] - Large-scale MIMO technology

[0072] - Hologram beamforming (HBF)

[0073] - Optical wireless technology

[0074] - Free-space optical transmission backhaul network (FSO backhaul network)

[0075] - Quantum communication

[0076] - Cell-free communication

[0077] - Integration of wireless information and power transmission

[0078] - Integration of wireless communication and sensing

[0079] - Integrated access and backhaul network

[0080] - Big data analysis

[0081] - Reconfigurable intelligent surface

[0082] - metaverse

[0083] - Block chain

[0084] Advanced Air Mobility (AAM): AAM can be a broad concept encompassing urban air mobility (UAM), regional air mobility (RAM), and uncrewed aerial systems (UAS). For example, AAM can include UAM, RAM, UAS, and uncrewed aerial vehicles (UAVs).

[0085] - Autonomous driving (self-driving): V2X (vehicle to everything), a key element in building autonomous driving infrastructure, can be a technology that allows cars to communicate and share with various elements on the road for autonomous driving, such as vehicle to vehicle (V2V) wireless communication and vehicle to infrastructure (V2I) wireless communication.

[0086] Non-terrestrial network (NTN): NTN can refer to a network or network segment that utilizes radio frequency (RF) resources mounted on satellites (or UAS platforms). NTN services may be considered to secure wider coverage or provide wireless communication services in locations where the installation of wireless communication base stations is difficult.

[0087] - Integrated sensing and communication (ISAC)

[0088] - Reconfigurable intelligent surface (RIS): RIS can be used to manipulate and enhance signal propagation in wireless communication environments. For example, a RIS can be composed of many small antennas, or metasurfaces, arranged on a surface, each of which can actively control the phase, amplitude, polarization, etc. of the reflected signal. For example, a RIS can improve signal reception by controlling the path, phase, and / or intensity of the propagating signal. For example, in the case of a RIS, power consumption can be very low because power is consumed only for controlling the phase and amplitude of the small antennas. For example, because a RIS can be reconfigured to suit different environments, it can meet diverse communication requirements and operate effectively in dynamic network environments.

[0089] FIG. 7 illustrates an example of a communication scenario based on a 6G system, according to an embodiment of the present disclosure. The embodiment of FIG. 7 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0090] Referring to FIG. 7, NTN communication can be performed based on satellite networks, high-altitude platform stations (HAPS) as international mobile telecommunications (IMT) base stations (BS), and terminals capable of aerial communication (e.g., AAMs). For example, to improve coverage, etc., devices such as satellite networks, HIBS, and terminals capable of aerial communication (e.g., AAMs) can act as relays. For example, an AAM can communicate with a base station, a satellite network, etc., and / or an AAM can communicate directly with a terminal, another AAM, etc.

[0091] Below, the integrated sensing and communication (ISAC) mentioned above is described in detail.

[0092] Integrated Sensing and Communications (ISAC) is a technology that uses radio frequencies to determine the instantaneous linear velocity, angle, distance (range), etc. of an object, thereby obtaining information about the environment and / or the characteristics of objects within the environment. Because radio frequency sensing does not require a device to connect to the object through a network, it can provide services for object positioning without a device. The ability to obtain range, velocity, and angle information from radio frequency signals can enable a wide range of new capabilities, such as various object detection, object recognition (e.g., vehicles, humans, animals, UAVs), and high-precision localization, tracking, and activity recognition. Wireless sensing services can provide information to a variety of industries (e.g., unmanned aerial vehicles, smart homes, V2X, factories, railways, public safety, etc.), enabling applications such as intruder detection, assisted vehicle steering and navigation, trajectory tracking, collision avoidance, traffic management, and health and traffic management. In some cases, wireless sensing can utilize non-3GPP type sensors (e.g., radar, cameras) to further support 3GPP-based sensing. For example, the operation of a wireless sensing service (e.g., sensing operation) may depend on the transmission, reflection, and scattering processing of wireless sensing signals. Therefore, wireless sensing may provide an opportunity to enhance existing communication systems from communication networks to wireless communication and sensing networks. FIG. 8 illustrates an example of a sensing operation according to an embodiment of the present disclosure. The embodiment of FIG. 8 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted. Specifically, FIG. 8 (a) illustrates an example of sensing using a sensing receiver and a sensing transmitter located at the same location (e.g., monostatic sensing), and FIG. 8 (b) illustrates an example of sensing using a separated sensing receiver and a sensing transmitter (e.g., bistatic sensing).

[0093] The meanings of terms used in this disclosure may be as follows.

[0094] - ISAC: Integrated Sensing and Communication

[0095] - Sensing signal: A reference signal transmitted and received for sensing.

[0096] - Sensing transmitter (Tx: entity that transmits sensing signals)

[0097] - Sensing receiver (sensing Rx(receiver)): an entity that receives a sensing signal

[0098] - Monostatic sensing: Sensing in which the sensing transmitter and sensing receiver are co-located in the same TRP or UE.

[0099] - Bi-static sensing: Sensing in which the sensing transmitter and the sensing receiver are located in different TRPs or UEs.

[0100] - Multi-static sensing: Sensing with multiple sensing transmitters and / or multiple sensing receivers for the sensing target.

[0101] - Target object (TO): The object to be detected through sensing.

[0102] - Environment object (EO): An object whose location is known other than the target object.

[0103] - Clutter: Background or objects whose location cannot be specified, excluding the target object and environment object.

[0104] - BS-BS sensing: Sensing in which BS#1 transmits a sensing RS and BS#2 receives the sensing RS. For example, if BS#1 and BS#2 are separate BSs, this may mean a BS-BS bi-static sensing operation. For example, if BS#1 and BS#2 are the same BS, this may mean a BS-BS mono-static sensing operation. For example, the BS may be a base station or a transmission and reception point (TRP). For example, if BS#1 and / or BS#2 are one or more BSs, this may mean a BS-BS multi-static sensing operation.

[0105] - BS-UE sensing: Sensing in which a BS transmits a sensing RS and a UE receives the sensing RS. For example, the BS may be a base station or a transmission and reception point (TRP). For example, if the BS and / or the UE are one or more BSs and / or one or more UEs, this may refer to a BS-UE multi-static sensing operation.

[0106] - UE-BS sensing: Sensing in which a UE transmits a sensing RS and a BS receives the sensing RS. For example, the BS may be a base station or a transmission and reception point (TRP). For example, if the BS and / or the UE are one or more BSs and / or one or more UEs, this may refer to a UE-BS multi-static sensing operation.

[0107] - UE-UE sensing: Sensing in which UE#1 transmits a sensing RS and UE#2 receives the sensing RS. For example, if UE#1 and UE#2 are separate UEs, this may mean a UE-UE bi-static sensing operation. For example, if UE#1 and UE#2 are the same UE, this may mean a UE-UE mono-static sensing operation. For example, the BS may be a base station or a transmission and reception point (TRP). For example, if UE#1 and / or UE#2 are one or more UEs, this may mean a UE-UE multi-static sensing operation.

[0108] - SMF: A sensing management function, an entity that performs at least one of the following functions. For example, an SMF may be a core network or a logical entity defined in a RAN. For example, an SMF may be a base station or a UE capable of performing SMF.

[0109] (1) Setting parameters related to the sensing reference signal

[0110] (2) Control of sensing actions and / or procedures;

[0111] (3) Receive measurement results related to sensing and estimate sensing results (e.g., distance, speed, direction, or object recognition) based on the measurement results.

[0112] - TSA (target sensing area): The area where an object is detected through sensing.

[0113] - RCS (radar cross section): The effective area that intercepts the transmitted radar power and scatters the power isotropically toward the radar receiver.

[0114] - Sensing entity: An entity associated with a sensing operation. For example, a sensing entity may include a sensing transmitter, a sensing receiver, and / or an SMF.

[0115] In an embodiment of the present disclosure, a “specific threshold” may mean a threshold that is defined in advance or set (in advance) by a higher layer (e.g., including an application layer) of a network or a base station or a terminal. In an embodiment of the present disclosure, a “specific set value” may mean a value that is defined in advance or set (in advance) by a higher layer (e.g., including an application layer) of a network or a base station or a terminal. In an embodiment of the present disclosure, “set by the network / base station” may mean an operation in which the base station sets (in advance) to the UE through a higher layer signaling (e.g., RRC signaling), sets / signals to the UE through MAC CE, or signals to the UE through DCI (downlink control information).

[0116] Meanwhile, in an operation of tracking an object detected through sensing based on monostatic sensing or bistatic sensing, if the object moves and / or a sensing transmitter and / or a sensing receiver that transmits a sensing signal and / or receives a sensing signal for tracking the object moves, the performance of the sensing method used to track the object may deteriorate due to the movement, or tracking the object may become impossible. For example, in the case of performing detection and tracking based on monostatic sensing, the path of the sensing signal reflected by the target object may become unstable, or the sensing signal reflected by the target object may not be received by the sensing transmitter and / or receiver due to movement of the sensing transmitter and / or receiver or changes in the surrounding environment. In this case, for example, the reception quality of the sensing signal may deteriorate or path loss may increase, which may degrade the accuracy of target object detection and tracking. However, prior art does not define a transition procedure to alternative sensing (e.g., bistatic sensing) to supplement sensing accuracy in such situations. Therefore, relying on a single sensing method makes it difficult to ensure the reliability and stability of target object detection and tracking.

[0117] For example, in the case described above, the sensing-based object tracking operation can be maintained through an operation of switching from the existing sensing method to a new sensing method capable of tracking the object according to the movement. For example, to switch the sensing method described above, the sensing transmitter or sensing receiver can perform the following operation.

[0118] In the present disclosure, a method for switching a sensing mode and a device supporting the same are proposed.

[0119] For example, in a monostatic sensing operation for detection and tracking of a target object (TO), if a distance measurement value between a sensing transceiver that transmits and receives a sensing signal and the TO is greater than a (preliminary) set threshold distance, the sensing transceiver or a sensing management function (SMF) related to the monostatic sensing can switch the sensing method for tracking the TO from monostatic sensing to bistatic sensing or trigger a process related to the switching.

[0120] For example, in a monostatic sensing operation for detection and tracking of a TO, if a sensing signal transmitted by the sensing transceiver is reflected by the surroundings and a measurement of the magnitude or power of a sensing signal component received by the sensing transceiver among the sensing signal components reflected by the TO (or reflected according to the radar cross section (RCS) characteristic of the TO) that is the target of the detection and tracking and received by the sensing transceiver (e.g., a measurement of monostatic-RCS (M-RCS) power) is less than a (preliminary) set threshold power, the sensing transceiver or the SMF associated with the monostatic sensing can switch the sensing method for tracking the TO from monostatic sensing to bistatic sensing or trigger a process associated with the switching. For example, the threshold power may be determined based on the fourth power of the distance between the sensing transceiver and the TO.

[0121] For example, the sensing transceiver or the SMF performing the monostatic sensing may share information related to the TO with candidate sensing receivers and / or candidate sensing transmitters around the TO. For example, the shared information related to the TO may include a position of the sensing transceiver, a distance between the sensing transceiver and the TO, a position of the TO, a speed of the TO, or a moving direction of the TO.

[0122] For example, the candidate sensing receiver and / or the candidate sensing transmitter around the TO may report its own location information, the distance between the TO and the candidate sensing receiver, or the distance between the TO and the candidate sensing transmitter to the sensing transceiver performing monostatic sensing or the SMF.

[0123] For example, the candidate sensing receiver and / or the candidate sensing transmitter around the TO may report, to the sensing transceiver or the SMF, a measurement of the magnitude or power (e.g., a measurement of bistatic-RCS (B-RCS) power) of a sensing signal component received by the candidate sensing transmitter or the candidate sensing receiver among the sensing signal components reflected by the TO that is the target of the detection and tracking (or reflected according to the RCS characteristic of the TO) among the sensing signal components transmitted by the sensing transceiver and / or the candidate sensing transmitter, based on information related to the TO shared from the sensing transceiver or the SMF.

[0124] For example, the sensing transceiver or the SMF may select a sensing transmitter or sensing receiver to perform the bistatic sensing based on the position and distance reported by the candidate sensing receiver and / or the candidate sensing transmitter. For example, if the product of the square of the distance between the TO and the candidate sensing receiver and the square of the distance between the TO and the candidate sensing transmitter is less than a (pre-)set threshold, the candidate sensing receiver and / or the candidate sensing transmitter may be selected as the sensing receiver and / or sensing transmitter to perform the bistatic sensing. For example, the operation may be limited to the case where the product of the squares of the two distances is less than the fourth power of the distance between the TO and the sensing transceiver.

[0125] For example, the sensing transceiver or the SMF may select a sensing transmitter or sensing receiver to perform the bistatic sensing based on the B-RCS power measurement reported by the candidate sensing receiver and / or the candidate sensing transmitter. For example, the sensing receiver and / or the candidate sensing transmitter to perform the bistatic sensing for tracking the TO may be selected from among the candidate sensing receivers and / or the candidate sensing transmitters, wherein the B-RCS power measurement is greater than a (pre-)configured threshold power. For example, the operation may be limited to a case where the B-RCS power measurement measured by the candidate sensing receiver and / or the candidate sensing transmitter is greater than the M-RCS power measurement measured by the sensing transceiver by a (pre-)configured threshold power or more.

[0126] For example, the sensing transceiver or the SMF may determine, based on the capabilities of the candidate sensing receiver and / or the candidate sensing transmitter, whether the sensing transceiver operates as a sensing transmitter and performs bistatic sensing together with the candidate sensing receiver, or whether the sensing transceiver operates as a sensing receiver and performs bistatic sensing together with the candidate sensing transmitter. For example, if a sensing entity selected for bistatic sensing has only a receiving capability, the sensing transceiver may perform bistatic sensing while operating as a sensing transmitter.

[0127] FIG. 9 illustrates a method for switching a sensing mode from monostatic sensing to bistatic sensing, according to an embodiment of the present disclosure. The embodiment of FIG. 9 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0128] Referring to FIG. 9, sensing entity #1 (hereinafter, UE1) can perform monostatic sensing. For example, UE1 can transmit a sensing signal in the direction of a target object (TO) and receive a sensing signal reflected by the TO, thereby performing detection and tracking of the TO. For example, monostatic sensing performed solely by UE1 can be performed within a range where a monostatic path loss determined based on a distance between UE1 and the TO (a first distance measurement value) is lower than a threshold value (e.g., within a range where the quality of sensing service (e.g., quality of service (QoS)) can be guaranteed). Alternatively, for example, monostatic sensing performed solely by UE1 may be performed within a range in which the received power determined based on the distance between UE1 and TO (the first distance measurement value) is higher than a threshold value (e.g., within a range in which the quality of sensing service (e.g., quality of service (QoS)) can be guaranteed).

[0129] Meanwhile, for example, when UE1 or TO has mobility, distance-based measurements such as monostatic pathloss and / or received power may dynamically change as the distance between UE1 and TO changes. For example, when the distance between UE1 and TO (first distance measurement) is greater than a threshold, monostatic sensing that was previously performed solely by UE1 may be switched to bistatic sensing that was performed by UE1 and another UE. Or, for example, when the magnitude of a monostatic sensing signal received by UE1 is less than a threshold, monostatic sensing that was previously performed solely by UE1 may be switched to bistatic sensing that was performed by UE1 and another UE. Alternatively, for example, if the received power of a monostatic sensing signal measured based on the RCS (radio cross section) of the TO is less than a threshold value, the monostatic sensing previously performed solely by UE1 may be switched to bistatic sensing performed by UE1 and another UE. In this case, for example, UE1 and another UE to perform bistatic sensing may be selected as follows. For example, if the product of the square of the distance (second distance measurement value) between sensing entity #2 (hereinafter, UE2) around the TO and the TO and the square of the distance (first distance measurement value) between UE1 and the TO is less than the threshold value, UE2 may be selected as the UE to perform bistatic sensing.Alternatively, for example, if the product of the square of the distance between UE2 and the TO (the second distance measurement) around the TO and the square of the distance between UE1 and the TO (the first distance measurement) is less than the fourth power of the distance between UE1 and the TO (the first distance measurement), UE2 may be selected as the UE to perform bistatic sensing. Alternatively, for example, if the received power of a bistatic sensing signal measured based on the RCS of the TO is greater than a threshold value, UE2 may be selected as the UE to perform bistatic sensing. Alternatively, for example, if the received power of a bistatic sensing signal measured based on the RCS of the TO is greater than the received power of a monostatic sensing signal measured based on the RCS of the TO, UE2 may be selected as the UE to perform bistatic sensing.

[0130] For example, if monostatic sensing, which was previously performed solely by UE1, is switched to bistatic sensing performed by UE1 and UE2, and UE2 only has the capability to receive a sensing signal, UE1 can transmit a bistatic sensing signal in the direction of TO and UE2 can receive a sensing signal reflected by TO, thereby maintaining detection and tracking of TO.

[0131] FIG. 10 illustrates a method for switching a sensing mode from monostatic sensing to bistatic sensing, according to an embodiment of the present disclosure. The embodiment of FIG. 10 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0132] Referring to FIG. 10, as in the aforementioned FIG. 9, sensing entity #1 (hereinafter, UE1) can perform monostatic sensing. For example, UE1 can transmit a sensing signal in the direction of a target object (TO) and receive a sensing signal reflected by the TO, thereby performing detection and tracking of the TO. For example, monostatic sensing performed solely by UE1 can be performed within a range in which a monostatic path loss determined based on a distance between UE1 and the TO (a first distance measurement value) is lower than a threshold value (e.g., within a range in which the quality of sensing service (e.g., QoS (quality of service)) can be guaranteed). Alternatively, for example, monostatic sensing performed solely by UE1 may be performed within a range in which the received power determined based on the distance between UE1 and TO (the first distance measurement value) is higher than a threshold value (e.g., within a range in which the quality of sensing service (e.g., quality of service (QoS)) can be guaranteed).

[0133] Meanwhile, for example, as in the above-described FIG. 9, when UE1 or TO has mobility, distance-based measurements such as monostatic path loss and / or received power may dynamically change depending on the change in the distance between UE1 and TO. For example, when the distance between UE1 and TO (first distance measurement value) is greater than a threshold, monostatic sensing previously performed solely by UE1 may be switched to bistatic sensing performed by UE1 and another UE. In this case, for example, as in the above-described FIG. 9, UE1 and another UE to perform bistatic sensing may be selected as follows. For example, if the product of the square of the distance (second distance measurement) between sensing entity #2 (hereinafter, UE2) around the TO and the TO and the square of the distance (first distance measurement) between UE1 and the TO is less than a threshold value, UE2 may be selected as the UE to perform bistatic sensing. Or, for example, if the product of the square of the distance (second distance measurement) between UE2 around the TO and the TO and the square of the distance (first distance measurement) between UE1 and the TO is less than the fourth power of the distance (first distance measurement) between UE1 and the TO, UE2 may be selected as the UE to perform bistatic sensing.

[0134] Meanwhile, for example, unlike the above-described FIG. 9, if UE2 does not have the capability to receive a sensing signal (e.g., if UE2 is selected as a UE to perform bistatic sensing based solely on distance-related conditions), UE2 may operate as a sensing transmitter that transmits a sensing signal in the direction of the TO, and UE1, which has the capability to receive a sensing signal, may operate as a sensing receiver that receives a sensing signal reflected by the TO. For example, if monostatic sensing previously performed solely by UE1 is switched to bistatic sensing performed by UE1 and UE2, and UE2 only has the capability to transmit a sensing signal, UE2 may transmit a bistatic sensing signal in the direction of the TO, and UE1 may receive a sensing signal reflected by the TO, thereby maintaining detection and tracking of the TO.

[0135] For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or related parameters (e.g., thresholds) may be specifically (or differently or independently) set according to a service type. For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or related parameters may be specifically (or differently or independently) set according to (LCH or service) priority. For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or related parameters may be specifically (or differently or independently) set according to QoS requirements (e.g., latency, reliability, minimum communication range). For example, whether (some) of the proposed methods / rules of the present disclosure are applicable and / or related parameters may be specifically (or differently or independently) set according to a PQI parameter. For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters can be specifically (or differently or independently) set depending on whether an LCH / MAC PDU with HARQ feedback is transmitted (HARQ feedback enabled / disabled). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters can be specifically (or differently or independently) set depending on a CBR measurement value of a resource pool. For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters can be specifically (or differently or independently) set depending on an SL cast type (e.g., unicast, groupcast, broadcast).For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their associated parameters can be specifically (or differently or independently) set according to SL groupcast HARQ feedback options (e.g., NACK-only feedback, ACK / NACK feedback, TX-RX distance based NACK-only feedback). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their associated parameters can be specifically (or differently or independently) set according to CG type (e.g., type 1 or type 2) in SL mode 1. For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their associated parameters can be specifically (or differently or independently) set according to SL mode type (e.g., mode 1 or mode 2). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their associated parameters can be specifically set according to resource pool. For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters may be specifically (or differently or independently) set depending on whether the PSFCH resource is a configured resource pool. For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters may be specifically (or differently or independently) set depending on the L2 ID (e.g., source L2 ID or destination L2 ID). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters may be specifically (or differently or independently) set depending on the PC5 RRC connection link. For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters may be specifically (or differently or independently) set depending on the SL link.For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters can be specifically (or differently or independently) set depending on the connection state with the base station (e.g., RRC CONNECTED state, IDLE state, INACTIVE state). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters can be specifically (or differently or independently) set depending on the SL HARQ process (or SL HARQ process ID). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters can be specifically (or differently or independently) set depending on whether the transmitting UE or the receiving UE performs the SL DRX operation. For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or their related parameters can be specifically (or differently or independently) set depending on whether the UE is a power saving UE. For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or related parameters may be specifically (or differently or independently) set depending on whether PSFCH transmission and PSFCH reception overlap from a specific UE perspective (or, when multiple PSFCH TXs exceeding UE capability overlap) (or, when PSFCH transmission and / or reception are omitted). For example, whether (some) of the proposed schemes / rules of the present disclosure are applicable and / or related parameters may be specifically (or differently or independently) set depending on whether the RX UE actually receives (e.g., successfully receives) a (re)transmission of PSCCH and / or PSSCH from the TX UE.

[0136] In addition, the "configuration" (or "designation") in the present disclosure may be extended to include a form in which the base station notifies the terminal through a predefined (physical layer or upper layer) channel / signal (e.g., SIB, RRC, MAC CE) (and / or a form provided through pre-configuration and / or a form in which the terminal notifies other terminals through a predefined (physical layer or upper layer) channel / signal (e.g., SL MAC CE, PC5 RRC)). In addition, the "PSFCH" in the present disclosure may be extended to include (NR or LTE) PSSCH and / or (NR or LTE) PSCCH and / or (NR or LTE) SL SSB (and / or UL channel / signal). In addition, the proposed method of the present disclosure may be extended and used in combination (in a new way).

[0137] FIG. 11 illustrates a method for a first device to perform wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 11 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0138] Referring to FIG. 11, in step S1110, the first device can perform monostatic sensing for a target object. In step S1120, the first device can obtain a distance measurement value between the first device and the target object. For example, switching from the monostatic sensing to the bistatic sensing for the target object can be based on the distance measurement value and a first threshold value.

[0139] For example, the switching from the monostatic sensing to the bistatic sensing may be based on the distance measurement being greater than the first threshold.

[0140] For example, the switching from the monostatic sensing to the bistatic sensing may be triggered by a sensing management function (SMF) based on the distance measurement being greater than the first threshold.

[0141] For example, the method wherein the switching from the monostatic sensing to the bistatic sensing is based on the received power value of the monostatic sensing signal measured based on the radar cross section (RCS) of the target object being less than a second threshold value. For example, the second threshold value may be determined based on the fourth power of the distance measurement value.

[0142] Additionally, for example, the first device may obtain a distance measurement between the at least one device and the target object from at least one device around the target object. For example, the at least one device may be selected as a device to perform bistatic sensing based on a product of a square of the distance measurement between the first device and the target object and a square of the distance measurement between the at least one device and the target object being less than a third threshold value.

[0143] Additionally, for example, the first device may obtain a distance measurement value between the at least one device and the target object from at least one device around the target object. For example, the at least one device may be selected as a device to perform bistatic sensing based on a product of a square of a distance measurement value between the at least one device around the target object and the target object and a square of a distance measurement value between the first device and the target object being less than the fourth power of the distance measurement value between the first device and the target object.

[0144] Additionally, for example, the first device can obtain, from at least one device around the target object, a reception power value of a bistatic sensing signal measured based on an RCS of the target object. For example, the bistatic sensing signal may be a sensing signal transmitted by the first device. For example, based on the reception power value being greater than a fourth threshold value, the at least one device may be selected as a device to perform the bistatic sensing. For example, based on the reception power value of the bistatic sensing signal measured by the at least one device based on the RCS of the target object being greater than the reception power value of the monostatic sensing signal measured by the first device based on the RCS of the target object, the at least one device may be selected as a device to perform the bistatic sensing. For example, based on the RCS of the target object, the reception power value of the bistatic sensing signal measured by the at least one device exceeds a fifth threshold value more than the reception power value of the monostatic sensing signal measured by the first device based on the RCS of the target object, the at least one device may be selected as the device to perform the bistatic sensing.

[0145] For example, whether to select at least one device around the target object as a device to perform the bistatic sensing may be based on the capability of the at least one device. For example, whether the at least one device transmits a sensing signal related to the bistatic sensing or receives a sensing signal related to the bistatic sensing may be determined based on the capability of the at least one device.

[0146] For example, based on the switching from the monostatic sensing to the bistatic sensing, sensing of the target object can be maintained.

[0147] The proposed method can be applied to devices according to various embodiments of the present disclosure. First, the processor (102) of the first device (100) can perform monostatic sensing for a target object. Then, the processor (102) of the first device (100) can obtain a distance measurement value between the first device and the target object. For example, switching from the monostatic sensing to the bistatic sensing for the target object can be based on the distance measurement value and a first threshold value.

[0148] According to one embodiment of the present disclosure, a first device configured to perform wireless communication may be provided. For example, the first device may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the first device to: perform monostatic sensing of a target object; and obtain a distance measurement between the first device and the target object. For example, switching from the monostatic sensing to the bistatic sensing of the target object may be based on the distance measurement and a first threshold.

[0149] According to one embodiment of the present disclosure, a processing device configured to control a first device may be provided. For example, the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the first device to: perform monostatic sensing of a target object; and obtain a distance measurement between the first device and the target object. For example, switching from the monostatic sensing to the bistatic sensing of the target object may be based on the distance measurement and a first threshold.

[0150] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a first device to: perform monostatic sensing of a target object; and obtain a distance measurement between the first device and the target object. For example, switching from monostatic sensing to bistatic sensing of the target object may be based on the distance measurement and a first threshold value.

[0151] FIG. 12 illustrates a method for a second device to perform wireless communication according to an embodiment of the present disclosure. The embodiment of FIG. 12 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0152] Referring to FIG. 12, in step S1210, the second device can transmit a distance measurement value between the second device and the target object to the first device. In step S1220, the second device can perform sensing of the target object with the first device based on bistatic sensing. For example, the monostatic sensing of the first device can be switched to the bistatic sensing based on the product of the square of the distance measurement value between the second device and the target object and the square of the distance measurement value between the first device and the target object being less than a threshold value.

[0153] The proposed method can be applied to devices according to various embodiments of the present disclosure. First, the processor (202) of the second device (200) can control the transceiver (206) to transmit a distance measurement value between the second device and a target object to the first device. Then, the processor (202) of the second device (200) can perform sensing of the target object with the first device based on bistatic sensing. For example, the monostatic sensing of the first device can be switched to the bistatic sensing based on the product of the square of the distance measurement value between the second device and the target object and the square of the distance measurement value between the first device and the target object being less than a threshold value.

[0154] According to one embodiment of the present disclosure, a second device configured to perform wireless communication may be provided. For example, the second device may include at least one transceiver; at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the second device to: transmit a distance measurement between the second device and a target object to a first device; and perform sensing of the target object with the first device based on bistatic sensing. For example, monostatic sensing of the first device may be switched to bistatic sensing based on a product of a square of a distance measurement between the second device and the target object and a square of a distance measurement between the first device and the target object being less than a threshold.

[0155] According to one embodiment of the present disclosure, a processing device configured to control a second device may be provided. For example, the processing device may include at least one processor; and at least one memory coupled to the at least one processor and storing instructions. For example, the instructions, based on execution by the at least one processor, may cause the second device to: transmit a distance measurement between the second device and a target object to a first device; and perform sensing of the target object with the first device based on bistatic sensing. For example, monostatic sensing of the first device may be switched to the bistatic sensing based on a product of a square of a distance measurement between the second device and the target object and a square of a distance measurement between the first device and the target object being less than a threshold.

[0156] According to one embodiment of the present disclosure, a non-transitory computer-readable storage medium having instructions recorded thereon may be provided. For example, the instructions, when executed, may cause a second device to: transmit a distance measurement between the second device and a target object to a first device; and perform sensing of the target object with the first device based on bistatic sensing. For example, monostatic sensing of the first device may be switched to bistatic sensing based on a product of a square of a distance measurement between the second device and the target object and a square of a distance measurement between the first device and the target object being less than a threshold.

[0157] According to various embodiments of the present disclosure, an operation of switching from monostatic sensing to bistatic sensing may be performed based on distance information between a sensing transmitter and receiver and a target object, or whether a sensing signal reflected from the target object has been received, etc. Specifically, for example, when tracking a TO based on monostatic sensing is performed, if the sensing performance deteriorates due to movement of the TO or the sensing transmitter or sensing receiver and tracking cannot be performed, the TO may be continuously tracked by switching to a bistatic sensing method. For example, even if a sensing signal is not received within a monostatic-based sensing structure or a path loss increases rapidly, if a condition determined based on the distance is satisfied, a stable transmission and reception path of the sensing signal can be secured by utilizing a bistatic-based sensing structure, and the reliability and accuracy of detection and tracking of the target object can be maintained. Alternatively, for example, the sensing method can be switched to flexibly respond to environmental changes or mobility of the sensing transceiver, thereby preventing degradation of sensing performance and improving the continuity and stability of detection and tracking of target objects.

[0158] The various embodiments of the present disclosure may be combined with each other.

[0159] Below, a description is given of devices to which various embodiments of the present disclosure can be applied.

[0160] Although not limited thereto, the various descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in this document may be applied to various fields requiring wireless communication / connectivity (e.g., 5G) between devices.

[0161] Hereinafter, more specific examples will be provided with reference to the drawings. In the drawings / descriptions below, the same drawing reference numerals may represent identical or corresponding hardware blocks, software blocks, or functional blocks, unless otherwise described.

[0162] Fig. 13 illustrates a communication system (1) according to one embodiment of the present disclosure. The embodiment of Fig. 13 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0163] Referring to FIG. 13, a communication system (1) to which various embodiments of the present disclosure are applied includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone) and / or an Aerial Vehicle (AV) (e.g., an Advanced Air Mobility (AAM)). The XR device may include an Augmented Reality (AR) / Virtual Reality (VR) / Mixed Reality (MR) device, and may be implemented in the form of a Head-Mounted Device (HMD), a Head-Up Display (HUD) equipped in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance, a digital signage, a vehicle, a robot, etc. The portable device may include a smartphone, a smart pad, a wearable device (e.g., a smart watch, smart glasses), a computer (e.g., a laptop, etc.), etc. The home appliance may include a TV, a refrigerator, a washing machine, etc. The IoT device may include a sensor, a smart meter, etc. For example, a base station and a network may also be implemented as a wireless device, and a specific wireless device (200a) may operate as a base station / network node to other wireless devices.

[0164] Here, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may include not only LTE, NR, and 6G, but also Narrowband Internet of Things for low-power communication. At this time, for example, NB-IoT technology may be an example of LPWAN (Low Power Wide Area Network) technology, and may be implemented with standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification may perform communication based on LTE-M technology. At this time, for example, LTE-M technology may be an example of LPWAN technology, and may be called by various names such as eMTC (enhanced Machine Type Communication). For example, LTE-M technology can be implemented by at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-Bandwidth Limited), 5) LTE-MTC, 6) LTE Machine Type Communication, and / or 7) LTE M, and is not limited to the above-described names. Additionally or alternatively, the wireless communication technology implemented in the wireless devices (100a to 100f) of the present specification can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN) considering low-power communication, and is not limited to the above-described names. For example, ZigBee technology can create personal area networks (PAN) related to small / low-power digital communication based on various standards such as IEEE 802.15.4, and can be called by various names.

[0165] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0166] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or D2D communication), and base station-to-base station communication (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present disclosure.

[0167] FIG. 14 illustrates a wireless device according to an embodiment of the present disclosure. The embodiment of FIG. 14 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0168] Referring to FIG. 14, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals via various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the base station (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 13.

[0169] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). Furthermore, the processor (102) may receive a wireless signal including second information / signal via the transceiver (106), and then store information obtained from signal processing of the second information / signal in the memory (104). The memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0170] A second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). In addition, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of the fourth information / signals in the memory (204). The memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In the present disclosure, a wireless device may also mean a communication modem / circuit / chip.

[0171] Hereinafter, the hardware elements of the wireless device (100, 200) will be described in more detail. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0172] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For example, one or more Application Specific Integrated Circuits (ASICs), one or more Digital Signal Processors (DSPs), one or more Digital Signal Processing Devices (DSPDs), one or more Programmable Logic Devices (PLDs), or one or more Field Programmable Gate Arrays (FPGAs) may be included in one or more processors (102, 202). The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0173] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0174] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 208). In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers (106, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0175] FIG. 15 illustrates a signal processing circuit for a transmission signal according to an embodiment of the present disclosure. The embodiment of FIG. 15 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0176] Referring to FIG. 15, the signal processing circuit (1000) may include a scrambler (1010), a modulator (1020), a layer mapper (1030), a precoder (1040), a resource mapper (1050), and a signal generator (1060). Although not limited thereto, the operations / functions of FIG. 15 may be performed in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 14. The hardware elements of FIG. 15 may be implemented in the processor (102, 202) and / or the transceiver (106, 206) of FIG. 14. For example, blocks 1010 to 1060 may be implemented in the processor (102, 202) of FIG. 14. Additionally, blocks 1010 to 1050 may be implemented in the processor (102, 202) of FIG. 14, and block 1060 may be implemented in the transceiver (106, 206) of FIG. 14.

[0177] The codeword can be converted into a wireless signal through the signal processing circuit (1000) of FIG. 15. Here, the codeword is an encoded bit sequence of an information block. The information block can include a transport block (e.g., an UL-SCH transport block, a DL-SCH transport block). The wireless signal can be transmitted through various physical channels (e.g., a PUSCH or a PDSCH).

[0178] Specifically, the codeword can be converted into a bit sequence scrambled by a scrambler (1010). The scramble sequence used for scrambling is generated based on an initialization value, and the initialization value may include ID information of the wireless device, etc. The scrambled bit sequence can be modulated into a modulation symbol sequence by a modulator (1020). The modulation method may include pi / 2-BPSK (pi / 2-Binary Phase Shift Keying), m-PSK (m-Phase Shift Keying), m-QAM (m-Quadrature Amplitude Modulation), etc. The complex modulation symbol sequence can be mapped to one or more transmission layers by a layer mapper (1030). The modulation symbols of each transmission layer can be mapped to the corresponding antenna port(s) by a precoder (1040) (precoding). The output z of the precoder (1040) can be obtained by multiplying the output y of the layer mapper (1030) by a precoding matrix W of N*M. Here, N is the number of antenna ports, and M is the number of transmission layers. Here, the precoder (1040) can perform precoding after performing transform precoding (e.g., DFT transform) on complex modulation symbols. In addition, the precoder (1040) can perform precoding without performing transform precoding.

[0179] The resource mapper (1050) can map modulation symbols of each antenna port to time-frequency resources. The time-frequency resources can include multiple symbols (e.g., CP-OFDMA symbols, DFT-s-OFDMA symbols) in the time domain and multiple subcarriers in the frequency domain. The signal generator (1060) generates a wireless signal from the mapped modulation symbols, and the generated wireless signal can be transmitted to another device through each antenna. To this end, the signal generator (1060) can include an Inverse Fast Fourier Transform (IFFT) module, a Cyclic Prefix (CP) inserter, a Digital-to-Analog Converter (DAC), a frequency uplink converter, etc.

[0180] The signal processing process for receiving signals in a wireless device can be configured in reverse order of the signal processing process (1010 to 1060) of FIG. 15. For example, a wireless device (e.g., 100, 200 of FIG. 14) can receive wireless signals from the outside through an antenna port / transceiver. The received wireless signals can be converted into baseband signals through a signal restorer. For this purpose, the signal restorer can include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a fast Fourier transform (FFT) module. Thereafter, the baseband signal can be restored to a codeword through a resource demapper process, a postcoding process, a demodulation process, and a descrambling process. The codewords can be restored to the original information blocks through decoding. Accordingly, a signal processing circuit (not shown) for a received signal may include a signal restorer, a resource de-mapper, a postcoder, a demodulator, a de-scrambler, and a decoder.

[0181] Figure 16 illustrates a wireless device according to an embodiment of the present disclosure. The wireless device may be implemented in various forms depending on the use case / service (see Figure 13). The embodiment of Figure 16 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0182] Referring to FIG. 16, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 14 and may be composed of various elements, components, units / units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional element (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204) of FIG. 14. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 14. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls the overall operation of the wireless device. For example, the control unit (120) may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit (130). In addition, the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0183] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 13, 100a), a vehicle (Fig. 13, 100b-1, 100b-2), an XR device (Fig. 13, 100c), a portable device (Fig. 13, 100d), a home appliance (Fig. 13, 100e), an IoT device (Fig. 13, 100f), a digital broadcasting terminal, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 13, 400), a base station (Fig. 13, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0184] In FIG. 16, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be interconnected entirely via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and the first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of one or more processor sets. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of a random access memory (RAM), a dynamic RAM (DRAM), a read only memory (ROM), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0185] Below, the implementation example of Fig. 16 is described in more detail with reference to the drawings.

[0186] FIG. 17 illustrates a mobile device according to an embodiment of the present disclosure. The mobile device may include a smartphone, a smart pad, a wearable device (e.g., a smartwatch, smartglasses), or a portable computer (e.g., a laptop, etc.). The mobile device may be referred to as a Mobile Station (MS), a User Terminal (UT), a Mobile Subscriber Station (MSS), a Subscriber Station (SS), an Advanced Mobile Station (AMS), or a Wireless Terminal (WT). The embodiment of FIG. 17 may be combined with various embodiments of the present disclosure, and some descriptions, functions, procedures, proposals, methods, and / or operations of the embodiments may be omitted.

[0187] Referring to FIG. 17, the portable device (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a memory unit (130), a power supply unit (140a), an interface unit (140b), and an input / output unit (140c). The antenna unit (108) may be configured as a part of the communication unit (110). Blocks 110 to 130 / 140a to 140c correspond to blocks 110 to 130 / 140 of FIG. 16, respectively.

[0188] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with other wireless devices and base stations. The control unit (120) can control components of the mobile device (100) to perform various operations. The control unit (120) can include an AP (Application Processor). The memory unit (130) can store data / parameters / programs / codes / commands required for operating the mobile device (100). In addition, the memory unit (130) can store input / output data / information, etc. The power supply unit (140a) supplies power to the mobile device (100) and can include a wired / wireless charging circuit, a battery, etc. The interface unit (140b) can support connection between the mobile device (100) and other external devices. The interface unit (140b) can include various ports (e.g., audio input / output ports, video input / output ports) for connection with external devices. The input / output unit (140c) can input or output video information / signals, audio information / signals, data, and / or information input from a user. The input / output unit (140c) may include a camera, a microphone, a user input unit, a display unit (140d), a speaker, and / or a haptic module.

[0189] For example, in the case of data communication, the input / output unit (140c) obtains information / signals (e.g., touch, text, voice, image, video) input by the user, and the obtained information / signals can be stored in the memory unit (130). The communication unit (110) converts the information / signals stored in the memory into wireless signals, and can directly transmit the converted wireless signals to other wireless devices or to a base station. In addition, the communication unit (110) can receive wireless signals from other wireless devices or base stations, and then restore the received wireless signals to the original information / signals. The restored information / signals can be stored in the memory unit (130) and then output in various forms (e.g., text, voice, image, video, haptic) through the input / output unit (140c).

[0190] The claims set forth in this specification may be combined in various ways. For example, the technical features of the method claims of this specification may be combined and implemented as a device, and the technical features of the device claims of this specification may be combined and implemented as a method. Furthermore, the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a device, and the technical features of the method claims and the technical features of the device claims of this specification may be combined and implemented as a method.

Claims

1. In the method, A first device performs monostatic sensing of a target object; and A step of obtaining a distance measurement value between the first device and the target object; including: A method wherein switching from the monostatic sensing to the bistatic sensing for the target object is based on the distance measurement value and a first threshold value.

2. In paragraph 1, A method wherein the switching from the monostatic sensing to the bistatic sensing is based on the distance measurement being greater than the first threshold value.

3. In paragraph 1, A method wherein the switching from the monostatic sensing to the bistatic sensing is triggered by a sensing management function (SMF) based on the distance measurement being greater than the first threshold value.

4. In paragraph 1, A method wherein the switching from the monostatic sensing to the bistatic sensing is based on the reception power value of the monostatic sensing signal measured based on the radar cross section (RCS) of the target object being less than a second threshold value.

5. In paragraph 4, A method wherein the second threshold value is determined based on the fourth power of the distance measurement value.

6. In paragraph 1, Further comprising a step of obtaining a distance measurement value between the at least one device and the target object from at least one device around the target object; A method wherein the at least one device is selected as a device to perform bistatic sensing based on a product of a square of a distance measurement between the first device and the target object and a square of a distance measurement between the at least one device and the target object being less than a third threshold value.

7. In paragraph 1, Further comprising a step of obtaining a distance measurement value between the at least one device and the target object from at least one device around the target object; A method wherein the at least one device is selected as a device to perform bistatic sensing based on a product of a square of a distance measurement between at least one device around the target object and the target object and a square of a distance measurement between the first device and the target object being less than the fourth power of the distance measurement between the first device and the target object.

8. In paragraph 1, Further comprising a step of obtaining a reception power value of a bistatic sensing signal measured based on the RCS of the target object from at least one device around the target object; The above bistatic sensing signal is a sensing signal transmitted by the first device, and A method wherein at least one device is selected as a device to perform the bistatic sensing based on the received power value being greater than a fourth threshold value.

9. In paragraph 8, A method in which the at least one device is selected as a device to perform the bistatic sensing based on the fact that the reception power value of the bistatic sensing signal measured by the at least one device based on the RCS of the target object is greater than the reception power value of the monostatic sensing signal measured by the first device based on the RCS of the target object.

10. In paragraph 8, A method in which the at least one device is selected as a device to perform the bistatic sensing based on a reception power value of the bistatic sensing signal measured by the at least one device based on the RCS of the target object exceeding a fifth threshold value more than a reception power value of the monostatic sensing signal measured by the first device based on the RCS of the target object.

11. In paragraph 1, A method wherein whether to select at least one device around the target object as a device to perform the bistatic sensing is based on the capability of the at least one device.

12. In paragraph 11, A method wherein whether the at least one device transmits a sensing signal related to the bistatic sensing or receives a sensing signal related to the bistatic sensing is determined based on the capability of the at least one device.

13. In paragraph 1, A method in which sensing of the target object is maintained based on the switching from the monostatic sensing to the bistatic sensing.

14. In the first device, At least one transmitter / receiver; at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said first device causes: Perform monostatic sensing on a target object; and Obtain a distance measurement value between the first device and the target object, A first device, wherein switching from the above monostatic sensing to the bistatic sensing is based on the above distance measurement value and the first threshold value.

15. In a processing device set to control the first device, at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said first device causes: Perform monostatic sensing on a target object; and Obtain a distance measurement value between the first device and the target object, A processing device wherein switching from the above monostatic sensing to the bistatic sensing is based on the above distance measurement value and a first threshold value.

16. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the first device to: Perform monostatic sensing on a target object; and Obtain a distance measurement value between the first device and the target object, A non-transitory computer-readable storage medium, wherein switching from the above monostatic sensing to the bistatic sensing is based on the above distance measurement value and a first threshold value.

17. In the method, A step in which a second device transmits a distance measurement value between the second device and a target object to the first device; and A step of performing sensing of the target object based on bistatic sensing with the first device; including: A method in which monostatic sensing of the first device is switched to bistatic sensing based on a product of a square of a distance measurement between the second device and the target object and a square of a distance measurement between the first device and the target object being less than a threshold value.

18. In the second device, At least one transmitter / receiver; at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said second device causes: a first device to transmit a distance measurement value between the second device and the target object; and Perform sensing of the target object with the first device based on bistatic sensing, A second device, wherein monostatic sensing of the first device is switched to bistatic sensing based on a product of a square of a distance measurement value between the second device and the target object and a square of a distance measurement value between the first device and the target object being less than a threshold value.

19. In a processing device set to control a second device, at least one processor; and At least one memory connected to said at least one processor and storing instructions, said instructions being executed by said at least one processor, wherein said second device causes: a first device to transmit a distance measurement value between the second device and the target object; and Perform sensing of the target object with the first device based on bistatic sensing, A processing device in which monostatic sensing of the first device is switched to bistatic sensing based on a product of a square of a distance measurement value between the second device and the target object and a square of a distance measurement value between the first device and the target object being less than a threshold value.

20. A non-transitory computer-readable storage medium that records commands, The above commands, when executed, cause the second device to: a first device to transmit a distance measurement value between the second device and the target object; and Perform sensing of the target object with the first device based on bistatic sensing, A non-transitory computer-readable storage medium in which monostatic sensing of the first device is switched to bistatic sensing based on a product of a square of a distance measurement value between the second device and the target object and a square of a distance measurement value between the first device and the target object being less than a threshold value.

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