Apparatus and method for supporting transmission and reception of RF energy in wireless communication system

Abstract

According to various embodiments of the present disclosure, a method performed by a first device comprises the steps of: receiving a multiplexed energizing signal (ES) and a first link signal from a second device; and transmitting a second link signal to the second device, wherein the ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed, the ES is based on a carrier wave (CW), and the ES is related to energy supply to the first device.

Description

Device and method for supporting transmission and reception of RF energy in a wireless communication system

[0001] The present disclosure relates to a wireless communication system. Specifically, the present disclosure relates to a device and method for supporting the transmission and reception of radio frequency (RF) energy in a wireless communication system.

[0002]

[0003] Wireless communication systems are widely deployed to provide various types of communication services, such as voice and data. Typically, wireless communication systems are multiple access systems that support communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power). Examples of multiple access systems include Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), and Single Carrier Frequency Division Multiple Access (SC-FDMA).

[0004]

[0005] To solve the above-described problems, the present disclosure provides a device and method for supporting transmission and reception of RF energy in a wireless communication system.

[0006] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0007]

[0008] According to various embodiments of the present disclosure, a method performed by a first device is provided, comprising: receiving a multiplexed energizing signal (ES) and a first link signal from a second device; and transmitting a second link signal to the second device, wherein the ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed, the ES is based on a CW (carrier wave), and the ES is related to energy supply to the first device.

[0009] According to various embodiments of the present disclosure, a method performed by a second device is provided, comprising: transmitting to a first device a multiplexed energizing signal (ES) and a first link signal; and receiving a second link signal from the first device, wherein the ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed, the ES is based on a CW (carrier wave), and the ES is related to energy supply to the first device.

[0010] According to various embodiments of the present disclosure, a first device is provided, comprising: a transceiver; at least one processor; and at least one memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations, wherein the operations include all steps of a method performed by the first device according to various embodiments of the present disclosure.

[0011] According to various embodiments of the present disclosure, a second device is provided, comprising: a transceiver; at least one processor; and at least one memory operably connectable to the at least one processor and storing instructions that, when executed by the at least one processor, perform operations, wherein the operations include all steps of a method performed by the second device according to various embodiments of the present disclosure.

[0012] According to various embodiments of the present disclosure, a control device for controlling a first device in a wireless communication system is provided, the control device including at least one processor and at least one memory operably connected to the at least one processor, wherein the at least one memory stores instructions for performing operations based on being executed by the at least one processor, the operations including all steps of a method performed by the first device according to various embodiments of the present disclosure.

[0013] According to various embodiments of the present disclosure, a control device for controlling a second device in a wireless communication system is provided, the control device including at least one processor and at least one memory operably connected to the at least one processor, wherein the at least one memory stores instructions for performing operations based on being executed by the at least one processor, the operations including all steps of a method performed by the second device according to various embodiments of the present disclosure.

[0014] According to various embodiments of the present disclosure, there is provided one or more non-transitory computer-readable media storing one or more instructions, wherein the one or more instructions, when executed by one or more processors, perform operations, the operations including all steps of a method performed by a first device according to various embodiments of the present disclosure.

[0015] According to various embodiments of the present disclosure, there is provided one or more non-transitory computer-readable media storing one or more instructions, wherein the one or more instructions, when executed by one or more processors, perform operations, the operations including all steps of a method performed by a second device according to various embodiments of the present disclosure.

[0016]

[0017] To solve the above-described problems, the present disclosure can provide a device and method for supporting transmission and reception of RF energy in a wireless communication system.

[0018]

[0019] The accompanying drawings are intended to aid in understanding the present disclosure and, together with detailed descriptions, may provide embodiments of the present disclosure. However, the technical features of the present disclosure are not limited to specific drawings, and the features disclosed in each drawing may be combined with each other to form new embodiments. Reference numerals in each drawing may indicate structural elements.

[0020] FIG. 1 is a diagram illustrating an example of physical channels used in a system applicable to the present disclosure and a general signal transmission method using the same.

[0021] FIG. 2 is a diagram illustrating an example of a wireless frame structure used in a system applicable to the present disclosure.

[0022] FIG. 3 is a drawing illustrating an example of a slot structure used in a system applicable to the present disclosure.

[0023] FIG. 4 is a diagram illustrating an example of a slot structure of a wireless frame used in a system applicable to the present disclosure.

[0024] FIG. 5 is a diagram illustrating an example of an FDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0025] FIG. 6 is a diagram illustrating an example of an FDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0026] FIG. 7 is a diagram illustrating an example of an FDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0027] FIG. 8 is a diagram illustrating an example of an FDM continuous ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0028] FIG. 9 is a diagram illustrating an example of an FDM discontinuous ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0029] FIG. 10 is a diagram illustrating an example of an FDM discontinuous ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0030] FIG. 11 is a diagram illustrating an example of an FDM discontinuous ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0031] FIG. 12 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0032] FIG. 13 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0033] FIG. 14 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0034] FIG. 15 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0035] FIG. 16 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0036] FIG. 17 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0037] FIG. 18 is a diagram illustrating an example of a device-specific ES resource setting method in a system applicable to the present disclosure.

[0038] FIG. 19 is a diagram illustrating an example of a device-specific ES resource setting method in a system applicable to the present disclosure.

[0039] FIG. 20 is a diagram illustrating an example of a Device-common ES resource setting method in a system applicable to the present disclosure.

[0040] FIG. 21 is a diagram illustrating an example of an operation process of a first device in a system applicable to the present disclosure.

[0041] FIG. 22 is a diagram illustrating an example of an operation process of a second device in a system applicable to the present disclosure.

[0042] FIG. 23 is a diagram illustrating an example of the structure of a first device and a second device in a system applicable to the present disclosure.

[0043]

[0044] In various embodiments of the present disclosure, “A or B” may mean “only A,” “only B,” or “both A and B.” In other words, in various embodiments of the present disclosure, “A or B” may be interpreted as “A and / or B.” For example, in various embodiments of the present disclosure, “A, B or C” may mean “only A,” “only B,” “only C,” or “any combination of A, B and C.”

[0045] In various embodiments of the present disclosure, 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."

[0046] In various embodiments of the present disclosure, “at least one of A and B” may mean “only A,” “only B,” or “both A and B.” Furthermore, in various embodiments of the present disclosure, the expressions “at least one of A or B” or “at least one of A and / or B” may be interpreted as equivalent to “at least one of A and B.”

[0047] Additionally, in various embodiments of 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.”

[0048] Additionally, parentheses used in various embodiments of 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 various embodiments of the present disclosure is not limited to "PDCCH", and "PDDCH" 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."

[0049] Technical features individually described in a single drawing in various embodiments of the present disclosure may be implemented individually or simultaneously.

[0050]

[0051] Common signal transmission methods in 3GPP

[0052] Physical channels and general signal transmission

[0053] FIG. 1 is a diagram illustrating an example of physical channels used in a system applicable to the present disclosure and a general signal transmission method using these channels. Specifically, FIG. 1 illustrates physical channels used in a 3GPP system and general signal transmission.

[0054] Figure 1 illustrates the physical channels and typical signal transmission used in the 3GPP system. In a wireless communication system, a terminal receives information from a base station via the downlink (DL), and the terminal transmits information to the base station via the uplink (UL). The information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist depending on the type and purpose of the information they transmit and receive.

[0055] When a terminal is powered on again from a powered-off state or newly enters a cell, it performs an initial cell search operation, such as synchronizing with the base station (S11). To this end, the terminal receives the PSCH (Primary Synchronization Channel) and SSCH (Secondary Synchronization Channel) from the base station to synchronize with the base station and obtain information such as the cell ID (cell identity). In addition, the terminal can obtain broadcast information within the cell by receiving the PBCH (Physical Broadcast Channel) from the base station. In addition, the terminal can receive the DL RS (Downlink Reference Signal) during the initial cell search phase to check the downlink channel status.

[0056] A terminal that has completed initial cell search can obtain more specific system information by receiving a PDCCH (Physical Downlink Control Channel) and a corresponding PDSCH (Physical Downlink Control Channel) (S12).

[0057] Thereafter, the terminal may perform a random access procedure to complete connection to the base station (S13-S16). Specifically, the terminal may transmit a preamble via a physical random access channel (PRACH) (S13) and receive a random access response (RAR) for the preamble via a physical downlink control channel (PDCCH) and a corresponding PDSCH (S14). Thereafter, the terminal may transmit a physical uplink shared channel (PUSCH) using scheduling information in the RAR (S15) and perform a contention resolution procedure such as a PDCCH and a corresponding PDSCH (S16).

[0058] A terminal that has performed the above-described procedure can then perform PDCCH / PDSCH reception (S17) and PUSCH / PUCCH (Physical Uplink Control Channel) transmission (S18) as general uplink / downlink signal transmission procedures. Control information that the terminal transmits to the base station is referred to as UCI (Uplink Control Information). UCI includes HARQ ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CSI (Channel State Information), etc. CSI includes CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication), etc. UCI is generally transmitted through PUCCH, but can be transmitted through PUSCH when control information and data must be transmitted simultaneously. In addition, the terminal can aperiodically transmit UCI through PUSCH according to a request / instruction of the network.

[0059]

[0060] OFDM (Orthogonal Frequency Division Multiplexing) Numerology

[0061] The new RAT system uses OFDM transmission scheme or a similar transmission scheme. The new RAT system may follow OFDM parameters different from those of LTE. Alternatively, the new RAT system may follow the existing LTE / LTE-A numerology but have a larger system bandwidth (e.g., 100 MHz). Alternatively, a single cell may support multiple numerologies. That is, UEs operating under different numerologies can coexist within a single cell.

[0062]

[0063] Radio frame structure

[0064] FIG. 2 is a diagram illustrating an example of the structure of a wireless frame used in a system applicable to the present disclosure.

[0065] In NR, uplink and downlink transmissions are organized into frames. A radio frame is 10 ms long and is defined by two 5 ms half-frames (HF). Each half-frame is defined by five 1 ms subframes (SF). A subframe is divided into one or more slots, and the number of slots in a subframe depends on the subcarrier spacing (SCS). Each slot contains 12 or 14 OFDM(A) symbols, depending on the cyclic prefix (CP). When a regular CP is used, each slot contains 14 symbols. When an extended CP is used, each slot contains 12 symbols. Here, the symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA symbols (or DFT-s-OFDM symbols).

[0066] Table 1 illustrates that when CP is normally used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary depending on the SCS.

[0067] SCS (15*2^u)N slot symb N frame,u slot N subframe,u slot 15KHz (u=0)1410130KHz (u=1)1420260KHz (u=2)14404120KHz (u=3)14808240KHz (u=4)1416016

[0068] N slot symb is the number of symbols in the slot. N frame,uslot is the number of slots in the frame. N subframe,u slot is the number of slots within a subframe.

[0069]

[0070] Table 2 illustrates that when extended CP is used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary depending on the SCS.

[0071] SCS (15*2^u)N slot symb N frame,u slot N subframe,u slot 60KHz (u=2)12404

[0072] NR supports multiple numerologies (or subcarrier spacings (SCS)) to support various 5G services. For example, an SCS of 15 kHz supports wide areas in traditional cellular bands; an SCS of 30 kHz / 60 kHz supports dense urban areas, lower latency, and wider carrier bandwidth; and an SCS of 60 kHz or higher supports bandwidths greater than 24.25 GHz to overcome phase noise.

[0073] The NR frequency band can be defined by two types of frequency ranges (FR1, FR2). The numerical values ​​of the frequency ranges can be changed, and for example, the two types of frequency ranges (FR1, FR2) can be as shown in Table 3 below. For convenience of explanation, among the frequency ranges used in the NR system, FR1 can mean the "sub 6 GHz range", and FR2 can mean the "above 6 GHz range" and can be called millimeter wave (mmW).

[0074] Frequency Range designationCorresponding frequency rangeSubcarrier SpacingFR1450MHz - 6000MHz15, 30, 60kHzFR224250MHz - 52600MHz60, 120, 240kHz

[0075] As described above, the numerical value of the frequency range of the NR system can be changed. For example, FR1 may include a band from 410 MHz to 7125 MHz, as shown in Table 4 below. That is, FR1 may include a frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.). For example, the frequency band above 6 GHz (or 5850, 5900, 5925 MHz, etc.) included within FR1 may include an unlicensed band. The unlicensed band may be used for various purposes, such as for vehicular communications (e.g., autonomous driving).

[0076] Frequency Range designationCorresponding frequency rangeSubcarrier SpacingFR1410MHz - 7125MHz15, 30, 60kHzFR224250MHz - 52600MHz60, 120, 240kHz

[0077] In an NR system, OFDM(A) numerologies (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 a time resource (e.g., SF, slot, or TTI) (conveniently referred to as TU (Time Unit)) consisting of the same number of symbols may be set differently between the merged cells.

[0078]

[0079] FIG. 3 is a drawing illustrating an example of a slot structure used in a system applicable to the present disclosure.

[0080] A slot contains multiple symbols in the time domain. For example, a slot contains 7 symbols for a regular CP, but 6 symbols for an extended CP. A carrier contains multiple subcarriers in the frequency domain. A Resource Block (RB) is defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A Bandwidth Part (BWP) is defined as multiple consecutive (P)RBs in the frequency domain, and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier can contain up to N (e.g., 5) BWPs. Data communication is performed through activated BWPs, and only one BWP can be activated for a single terminal. Each element in the resource grid is referred to as a Resource Element (RE), to which one complex symbol can be mapped.

[0081]

[0082] FIG. 4 is a diagram illustrating an example of a slot structure of a wireless frame used in a system applicable to the present disclosure.

[0083] Fig. 4 is an exemplary system, illustrating the slot structure of a frame of an NR system.

[0084] The frame structure of NR is characterized by a self-contained structure in which a DL control channel, DL or UL data, and UL control channel can all be included in a single slot unit, as shown in the example of FIG. 4. At this time, DL data scheduling information, UL data scheduling information, etc. can be transmitted in the DL control channel, and ACK / NACK information for DL ​​data, CSI information (modulation and coding scheme information, MIMO transmission-related information, etc.), scheduling requests, etc. can be transmitted in the UL control channel. In FIG. 4, a time gap for DL-to-UL or UL-to-DL switching may exist between the control region and the data region. In addition, some of DL control / DL data / UL data / UL control may not be configured within a single slot. Or, the order of each channel configuring a single slot may be different. (For example, DL control / DL data / UL control / UL data or UL control / UL data / DL control / DL data, etc.)

[0085]

[0086] Technical terms used in this disclosure

[0087] - SSB: Synchronization Signal Block

[0088] - MIB: Master Information Block

[0089] - RMSI: Remaining Minimum System Information

[0090] - FR1: Frequency Range 1. Refers to the frequency range below 6 GHz (e.g., 450 MHz to 6000 MHz).

[0091] - FR2: Frequency Range 2. Refers to the millimeter wave (mmWave) range above 24 GHz (e.g., 24250 MHz to 52600 MHz).

[0092] - BW: Bandwidth

[0093] - BWP: Bandwidth Part

[0094] - RNTI: Radio Network Temporary Identifier

[0095] - CRC: Cyclic Redundancy Check

[0096] - SIB: System Information Block

[0097] - SIB1: SIB1 for NR devices = RMSI (Remaining Minimum System Information). Broadcasts information necessary for NR terminals to connect to the cell.

[0098] - CORESET (COntrol REsource SET): Time / frequency resource for NR terminal to attempt candidate PDCCH decoding

[0099] - CORESET#0: CORESET for Type0-PDCCH CSS set for NR devices (configured in MIB)

[0100] - Type0-PDCCH CSS set: a search space set in which an NR UE monitors a set of PDCCH candidates for a DCI format with CRC scrambled by a SI-RNTI

[0101] - MO: PDCCH Monitoring Occasion for Type0-PDCCH CSS set

[0102] - SIB1-R: (additional) SIB1 for reduced capability NR devices. May be limited to cases where it is generated as a separate TB from SIB1 and transmitted on a separate PDSCH.

[0103] - CORESET#0-R: CORESET#0 for reduced capability NR devices

[0104] - Type0-PDCCH-R CSS set: a search space set in which an redcap UE monitors a set of PDCCH candidates for a DCI format with CRC scrambled by a SI-RNTI

[0105] - MO-R: PDCCH Monitoring Occasion for Type0-PDCCH CSS set

[0106] - Cell defining SSB (CD-SSB): SSB containing RMSI scheduling information among NR SSBs

[0107] Non-cell defining SSB (non-CD-SSB): An SSB that is placed in the NR sync raster but does not contain RMSI scheduling information for the corresponding cell for measurement purposes. However, it may contain information indicating the location of the cell defining SSB.

[0108] - SCS: subcarrier spacing

[0109] - SI-RNTI: System Information Radio-Network Temporary Identifier

[0110] - Camp on: "Camp on" is the UE state in which the UE stays on a cell and is ready to initiate a potential dedicated service or to receive an ongoing broadcast service.

[0111] - TB: Transport Block

[0112] - RSA (Redcap standalone): Redcap device 또는 service만 지원하는 cell.

[0113] - SIB1(-R)-PDSCH: SIB1(-R)을 전송하는 PDSCH

[0114] - SIB1(-R)-DCI: SIB1(-R)-PDSCH를 scheduling하는 DCI. DCI format 1_0 with CRC scrambled by SI-RNTI.

[0115] - SIB1(-R)-PDCCH: SIB1(-R)-DCI를 전송하는 PDCCH

[0116] - FDRA: Frequency Domain Resource Allocation

[0117] - TDRA: Time Domain Resource Allocation

[0118] - RA: Random Access

[0119] - MSGA: preamble and payload transmissions of the random access procedure for 2-step RA type.

[0120] - MSGB: response to MSGA in the 2-step random access procedure. MSGB may consist of response(s) for contention resolution, fallback indication(s), and backoff indication.

[0121] - RO-N: RO (RACH Occasion) for normal UE 4-step RACH and 2-step RACH (if configured)

[0122] - RO-N1, RO-N2: When a separate RO is set for normal UE 2-step RACH, it is divided into RO-N1 (4-step) and RO-N2 (2-step).

[0123] - RO-R: RO (RACH Occasion) set separately from RO-N for redcap UE 4-step RACH and 2-step RACH (if configured)

[0124] - RO-R1, RO-R2: When separate ROs are set for redcap UE 2-step RACH, they are distinguished as RO-R1 (4-step) and RO-R2 (2-step).

[0125] - PG-R: MsgA-Preambles Group for redcap UEs

[0126] - RAR: Random Access Response

[0127] - RAR window: the time window to monitor RA response(s)

[0128] - FH: Frequency Hopping

[0129] - iBWP: initial BWP

[0130] - iBWP-DL(-UL): initial DL(UL) BWP

[0131] - iBWP-DL(-UL)-R: (separate) initial DL(UL) BWP for RedCap

[0132] - CS: Cyclic shift

[0133] - NB: Narrowband

[0134] - TO: Traffic Offloading

[0135] - mMTC; massive Machine Type Communications

[0136] - eMBB: enhanced Mobile Broadband Communication

[0137] - URLLC: Ultra-Reliable and Low Latency Communication

[0138] - RedCap: Reduced Capability

[0139] - eRedCap: enhanced RedCap

[0140] - FDD: Frequency Division Duplex

[0141] - HD-FDD: Half-Duplex-FDD

[0142] - DRX: Discontinuous Reception

[0143] - RRC: Radio Resource Control

[0144] - RRM: Radio Resource Management

[0145] - IWSN: Industrial Wireless Sensor Network

[0146] - LPWA: Low Power Wide Area

[0147] - RB: Resource Block

[0148] - CCE: Control Channel Element

[0149] - AL: Aggregation Level

[0150] - PRG: Physical Resource-block Group

[0151] - DFT-s-OFDM: DFT-spread OFDM

[0152] - PBCH: Physical Broadcast Channel

[0153] - A-PBCH: Additional PBCH

[0154] - BD: blind detection

[0155] - EPRE: Energy Per RE

[0156] - SNR: Signal-to-Noise Ratio

[0157] - TDM: Time Division Multiplexing

[0158] - FDM: Frequency Division Multiplexing

[0159] - DMRS: DeModulation Reference Signal

[0160] - TDD: Time Division Duplex

[0161] - PCI: Physical layer Cell ID

[0162] - EH: Energy Harvesting

[0163] - EH device: A device that operates based on EH. It can include all of Device A / B / C being discussed in 3GPP. In addition, although this disclosure primarily considers RF EH, an EH device does not necessarily have to be RF EH-based.

[0164] - ES: Energizing Signal (RF signal for energy supply to support RF energy harvesting)

[0165] - ET: Energy Transfer

[0166] - CW: Carrier Wave (carrier wave for backscattering modulation). It is not limited to a single-tone or continuous wave. It includes the meaning of a signal / channel defined / configured for a backscatter device to perform backscatter modulation.

[0167] - R: Reader / interrogator. This is a standard RFID term. In the 3GPP Ambient IoT context, readers can include gNB / eNB, intermediate / assisting nodes, and UEs, depending on the topology. Furthermore, Ambient IoT is not limited to 4G / 5G communication systems, and can include base stations, intermediate / assisting nodes, and UEs in next-generation communication systems.

[0168] - T: Tag / ambient IoT device. RFID standard term. In this disclosure, it can be interchanged with EH device, and in the 3GPP Ambient IoT context, it mainly refers to Ambient IoT device, Device A / B / C.

[0169] - R=>T: Reader-to-Tag or Reader-to-Tag communication link. If the base station or intermediate / assisting node is the reader, it can have the same meaning as DL.

[0170] - T=>R: Tag-to-Reader or Tag-to-Reader communication link. If the base station or intermediate / assisting node is the reader, it may have the same meaning as UL.

[0171] - R<=>T: Includes cases where R=>T and T=>R, or R=>T or T=>R. It may be the case that both R=>T and T=>R apply.

[0172] - BS: Base Station

[0173] - UE: User Equipment. In the case of LTE, NR, or next-generation communication systems, this refers to the LTE, NR, or next-generation communication system UE / terminal, respectively. This is a general wireless communication terminal type, distinct from Ambient IoT devices or Device A / B / C.

[0174] - Device: Unless otherwise specified, refers to EH device, Ambient IoT device, or Device A / B / C indiscriminately.

[0175] - F-gap: Frequency gap

[0176] - T-gap: Time gap

[0177] - TD: Time Domain

[0178] - FD: Frequency Domain

[0179]

[0180] Composition and Method of the Invention

[0181] In this disclosure, '()' can be interpreted as both excluding the content within () and including the content within the parentheses.

[0182] In this disclosure, ' / ' may mean including all of the contents separated by / (and) or including only some of the contents separated by / (or).

[0183] 5G The Internet of Things (IoT) has recently attracted significant attention in the wireless communications world. By reducing the size, complexity, and power consumption of IoT devices and installing and connecting hundreds of billions to trillions of IoT devices, it can be applied to various application fields. Specifically, 3GPP SA1 is discussing use cases, scenarios, and KPIs for these IoT devices, which are captured in 3GPP TR 22.840. Furthermore, 3GPP RAN is conducting research on IoT communications using the following SID objectives, and the output of this study is captured in 3GPP TR 38.848.

[0184]

[0185] This study targets a new 3GPP IoT technology suitable for deployment in a 3GPP system, which relies on ultra-low complexity devices with ultra-low power consumption for very low-end IoT applications. The study should provide clear differentiation, i.e., address use cases and scenarios that cannot otherwise be fulfilled based on existing 3GPP LPWA IoT technologies, such as NB-IoT, including reduced peak Tx power.

[0186]

[0187] In terms of energy storage, this study will consider the following device characteristics:

[0188] - Pure batteryless devices with no energy storage capability at all, and completely dependent on the availability of an external source of energy

[0189] - Devices with limited energy storage capability that do not need to be replaced or recharged manually.

[0190]

[0191] Device categorization based on corresponding characteristics (e.g., energy source, energy storage capability, passive / active transmission, etc.) may be discussed during the study in relation to relevant use cases. The device's peak power consumption shall be limited by its practical form factor for the intended use cases, and its energy source shall be taken into account.

[0192]

[0193] - Identify suitable deployment scenarios and their characteristics, at least for the use cases / services agreed in SA1's "Study on Ambient power-enabled internet of Things," comprising among at least the following aspects:

[0194] - Indoor / outdoor environment

[0195] - Basestation characteristics, e.g. macro / micro / pico cell-based deployments

[0196] - Connectivity topologies, including which node(s), e.g., basestation, UE, relay, repeater, etc., can communicate with target devices.

[0197] - TDD / FDD and frequency bands in licensed or unlicensed spectrum

[0198] - Coexistence with UEs and infrastructure in frequency bands for existing 3GPP technologies

[0199] - Device originated and / or device terminated traffic assumption

[0200] NOTE: More than one deployment scenario can be identified for a use case, and a deployment scenario may be common to more than one use case.

[0201] NOTE: If more than one deployment scenario is identified for a use case, the trade-offs between them should also be studied.

[0202] NOTE: This study does not prioritize deployment aspects that should be coordinated with SA (e.g., public or private networks, with or without CN connectivity).

[0203] NOTE: A representative use case can be studied for a group of use cases that have similar requirements.

[0204]

[0205] Formulate a set of RAN design targets based on the identified deployment scenarios and their characteristics for the relevant use cases, at least including:

[0206] - Power consumption

[0207] - Complexity

[0208] - Coverage

[0209] - Data transfer speed (- Data rate)

[0210] - Positioning accuracy

[0211] NOTE: The requirements from SA1 on the relevant use cases shall be taken into consideration.

[0212] NOTE: This study aims to provide better coverage compared to existing non-3GPP technologies for relevant use cases.

[0213] NOTE: Other RAN design targets related to connection density, mobility, security, latency, reliability, etc. may be discussed, if necessary, for relevant use cases.

[0214] NOTE: Detailed definitions of the RAN design targets should be discussed during the study.

[0215]

[0216] - Compare and assess the feasibility of meeting the design goals for relevant use cases based on appropriate deployment scenarios, and identify assumptions about required functionality to be supported.

[0217] NOTE: This does not require a detailed WG-level analysis.

[0218]

[0219] Note: This study targets an IoT segment well below the existing 3GPP IoT technologies (e.g., NB-IoT, eMTC, RedCap, etc.). This study does not aim to replace existing 3GPP LPWA technologies.

[0220]

[0221] The IoT devices that 3GPP is studying will primarily feature maintenance-free operation, meaning they can be used permanently without battery replacement. The 3GPP SA1 study results document, TR 22.840, documented the potential for energy harvesting from RF signals, highlighting the following advantages of this RF energy harvesting method.

[0222] The main advantage of RF-based energy harvesting is its availability in deployed environments and the fact that RF power is controllable (e.g., power can be sent by a transmitter on demand or periodically). Potential applications include logistics / warehouses, manufacturing, smart homes, health monitoring, and environmental monitoring.

[0223] The present disclosure relates to a method and device for supporting RF energy transmission to support a device (hereinafter referred to as EH device) based on RF energy harvesting in a wireless communication system.

[0224] In the present disclosure, a wireless communication system may include the meaning of a conventional wireless communication system such as LTE, NR, etc., and a 6G or next-generation communication system.

[0225] In the present disclosure, the EH device may include all of Device A / B / C under consideration in the 3GPP RAN study, and thus, the present disclosure may be applied to all of Device A / B / C. In addition, according to the proposal of the invention, the EH device is not limited to Device A / B / C or the device types / classes under consideration in 3GPP, and may be a comprehensive meaning of a general device that is primarily or auxiliaryly supplied with energy through energy harvesting.

[0226] [Device types / categories / set of devices / classes under study in 3GPP RAN]

[0227] (1) Device A: No energy storage, no independent signal generation, i.e. backscattering transmission

[0228] (1-1) Complexity comparable to UHF passive RFID

[0229] (2) Device B: Has energy storage, no independent signal generation, i.e., backscattering transmission. Use of stored energy can include amplification of reflected signals.

[0230] (2-1) Complexity to be somewhere b / w Device A and C

[0231] (3) Device C: Has energy storage, has independent signal generation, i.e. active RF component for transmission

[0232] (3-2) Complexity is orders of magnitude lower than NB-IoT.

[0233] The present disclosure may be applied to all of the following four connection topologies under consideration in the 3GPP RAN study, and may not be limited thereto depending on the invention's proposal.

[0234] [Connection topologies under study in 3GPP RAN]

[0235] - Topology (1): BS <-> Ambient IoT device

[0236] NOTE: Includes the possibility of BS Rx and BS Tx in different BSs.

[0237] - Topology (2): BS <-> intermediate node <-> Ambient IoT device

[0238] NOTE: Intermediate nodes can be relays, IABs, UEs, repeaters, etc., which are capable of ambient IoT.

[0239] - Topology (3): BS <-> Assisting Node <-> Ambient IoT Device <-> BS (Topology (3): BS <-> Assisting Node <-> Ambient IoT Device <-> BS)

[0240] NOTE: Assisting nodes can be relays, IABs, UEs, repeaters, etc., which are capable of ambient IoT.

[0241] - Topology (4): UE <-> Ambient IoT device

[0242] In the present disclosure, R=>T, T=>R, and R<=>T include cases where R and T are one or more in each case. In addition, when there are multiple Rs, the cases where each R is the same node / entity and the cases where each R is different nodes / entities can be included. Accordingly, the proposed methods of the present disclosure can be applied to all possible combinations in which one or more R(s) transmit an ES / R=>T signal / channel to one or more T(s) at the same or different nodes / locations. In addition, in the case of R<=>T, it can include R1=>T=>R2 (R1 and R2 are the same or different nodes / entities. When they are different, it is also called a bi-static configuration / set-up).

[0243]

[0244] RF energy transfer method using dedicated signal / channel [Dedicated ES method]

[0245] The Dedicated ES method may be a method that defines / designs and uses a new signal / channel (hereinafter, dedicated ES) for the purpose of energy transfer (ET). This method can be expected to have the effect of increasing ET efficiency by designing an ES that is optimized from the perspective of ET efficiency. At this time, ET efficiency can be defined as the amount of energy accumulated in the EH device compared to the ES transmission power / energy. From the perspective of ET efficiency, the ES optimization target may include the ES transmission waveform, frequency location and bandwidth, power allocation / boosting, Tx location, beam forming / width, etc. A brief explanation is added for each case below.

[0246] (1) ES waveform

[0247] (1-1) Single-tone (or continuous wave) for min resource occupancy / overhead

[0248] (1-2) Multi-tone or other high PAPR signals for improved ET efficiency

[0249] (2) ES power allocation / boosting

[0250] (2-1) Power boosting for improved coverage

[0251] (2-2) Device type-aware and / or distance-aware power allocation / boosting

[0252] (3) ES frequency location and bandwidth

[0253] (3-1) Larger ES bandwidth to reduce the time required for EH at the cost of resource overhead

[0254] (3-2) May include the required guard band(s) for coexistence with NR / LTE / next generation communication system signals / channels.

[0255] (3-3) ES can be transmitted in-band within the NR operating band, or in the guard band, or on a separate band / carrier.

[0256] (4) ES Tx geographical location

[0257] (4-1) ES may be transmitted from the same or different (separate) TRP as the signal / channel for communication purposes, and may be transmitted from multiple TRPs to secure coverage.

[0258] (4-2) It can be transmitted in isotropic or broad beam form from a specific TRP. Also, it can be a dedicated TRP / node for ES transmission with isotropic / broad beam form.

[0259] (5) ES beam forming / width

[0260] (5-1) Narrow ES transmission beam to reach distant EH devices, wide beam to cover more devices within a short range

[0261] (5-2) Beam tracking for narrow-beam ES transmission

[0262] (5-3) More time / frequency-domain resources for wide-beam ES transmission

[0263]

[0264] ES transmission method for EH device support

[0265] We propose three ES transmission methods to support EH devices: FDM ES transmission method, TDM ES transmission method, and TD window ES transmission method. Each of these methods is described below.

[0266] In the FDM / TDM ES transmission methods below, the cases where both R=>T and T=>R exist are mainly exemplified, but the proposed methods / methods of the present disclosure are not limited to the cases where both links exist unless otherwise stated. That is, the proposed methods / methods of the present disclosure are applicable to all cases where both R=>T and T=>R exist, or only one of the two exists, or in the case of some methods / methods, only ES is transmitted.

[0267]

[0268] FIG. 5 is a diagram illustrating an example of an FDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0269] FIG. 6 is a diagram illustrating an example of an FDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0270] FIG. 7 is a diagram illustrating an example of an FDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0271] [FDM ES transmission method]

[0272] The FDM ES transmission method may be a method of transmitting the ES in a separate frequency domain distinguished from the R<=>T signal / channel. FIGS. 5, 6, and 7 are examples of cases where the ES frequency band and the R<=>T frequency band are arranged / configured / indicated in the FDM ES transmission method in an NR licensed FDD band. FIG. 5 may be an example for Device C that can operate as FDD or HD-FDD in the FDD band because independent signal generation is possible. FIGS. 6 and 7 may be examples for Device A / B that can perform T=>R transmission based on backscattering modulation. FIG. 6 may be a case where the ES is transmitted / supplied to the FDD DL to operate EH and backscattering transmission, and in this case, the F-gap (see definition below) may be arranged / configured / indicated between the ES frequency band and the T=>R frequency band (within the FDD DL frequency band). FIG. 7 may be a case where ES is transmitted / supplied to FDD UL to operate EH and backscattering transmission, in which case F-gap (see definition below) may be placed / set / indicated between the ES frequency band and the T=>R frequency band (within the FDD UL frequency band).

[0273] In the FDM ES transmission method, a frequency gap (F-gap) can be set between the ES and the R<=>T signal / channel (see examples in Figures 5 / 6 / 7). The F-gap can be primarily used to eliminate / mitigate interference that the ES causes to the communication signal / channel. This interference can be more problematic when the ES transmission power is relatively large compared to the communication signal / channel transmission power. In addition, the F-gap can be set in the following cases:

[0274] - Between ES and coexistence system DL / UL channel / signal: It is expected to have the effect of eliminating / mitigating the interference that ES gives to coexistence system DL / UL channel / signal.

[0275] - Between R<=>T signal / channel and coexistence system DL / UL channel / signal: It is expected that the effect of eliminating / mitigating the interference that R<=>T signal / channel gives to coexistence system DL / UL channel / signal, or the interference between them, can be expected.

[0276] For each case in which the above F-gap can be set, parameters that determine the presence or absence of the F-gap and the F-gap size / position, etc., may be individually set / indicated, or all or part of the parameters may be commonly set / indicated. For example, the size (bandwidth) of the F-gap may be set / indicated as a common parameter, and the presence or absence of the F-gap, frequency position, etc. may be set / indicated as individual parameters. Information on the presence or absence / size / position of the F-gap, etc., may be set / indicated by the R / base station to Ambient IoT devices in a device-specific, device-common, or broadcast signaling manner. In addition, information on the presence / size / location of such F-gap, etc., may be set / indicated in a manner such as broadcast signaling (e.g., system information including SIB1), cell-specific / UE-specific RRC signaling, or dynamic (e.g., MAC CE, DCI) signaling of the corresponding communication system, for example, for rate-matching purposes in an NR system, in order to avoid / control interference / collision when using resources in a coexisting communication system (LTE, NR, or next-generation communication system).

[0277]

[0278] FIG. 8 is a diagram illustrating an example of an FDM continuous ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0279] [When ES is transmitted in FDM mode, ES's time domain transmission method]

[0280] When ES is transmitted using the FDM method, continuous (always-on) ES transmission and discontinuous (on-demand) ES transmission methods are proposed as time-domain transmission methods. Each method is explained below with examples.

[0281] [Continuous / always-on ES transmission method] A method of transmitting ES continuously or always (regardless of R<=>T signal / channel transmission time)

[0282] In the case of the FDM continuous ES transmission method, since the EH device always has energy stored, when communicating with the EH device and the R, the EH device charging time is eliminated from the communication delay factor, so the effect of minimizing communication latency can be expected. However, there may be a disadvantage of wasting power and resources at the R / base station.

[0283]

[0284] [Discontinuous / on-demand ES transmission method] A method of transmitting ES discontinuously or only when needed / requested.

[0285] In the case of FDM discontinuous ES transmission, unnecessary ES transmission can be minimized, thereby increasing system efficiency through reduced R / base station power consumption and resource recycling. However, when communicating between an EH device and an R, the EH device charging time is required, which may increase overall communication latency.

[0286] In the FDM discontinuous ES transmission method, cases where ES transmission is required / required may include cases where communication is established / instructed / required between R and T. In addition, EH may be required before the start time of R<=>T signal / channel transmission / reception. In this case, ES may be transmitted before the start time of R<=>T signal / channel transmission / reception (this situation is assumed in the examples below). The ES end time may be set / instructed (by EH device type / class) in consideration of EH requirement(s), ES frequency bandwidth size, etc. defined for the EH device or by EH device type / class. In addition, in order to support EH during R<=>T signal / channel transmission / reception, ES may be transmitted periodically (during a specific time interval). For ES reception of an EH device, the size of the continuous R<=>T signal / channel transmission / reception interval can be limited to a specific time, or EH through ES can be set / instructed / allowed to be performed during a specific time interval (by setting a time gap) at a specific cycle.

[0287] The FDM discontinuous ES transmission method may have the following detailed methods. In the examples below, T-Gap1 and T-Gap2 follow the definitions in the TDM ES transmission method below.

[0288] FIG. 9 is a diagram illustrating an example of an FDM discontinuous ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0289] [Method of transmitting ES only when transmitting T=>R signal / channel]

[0290] If T is a device type / class that does not require a separate ES during reception operation and requires EH using ES only during transmission operation, it is expected that the system efficiency will be increased through R / base station power savings and resource recycling.

[0291] FIG. 10 is a diagram illustrating an example of an FDM discontinuous ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0292] [Method of transmitting ES when transmitting T=>R signal / channel or R=>T signal / channel] If T is a device type / class that requires EH using ES during reception or transmission operation, the system efficiency can be expected to increase through power saving of R / base station and resource recycling.

[0293] FIG. 11 is a diagram illustrating an example of an FDM discontinuous ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0294] [Method of transmitting ES only when transmitting R=>T signal / channel] If T is a device type / class that requires EH using ES only when receiving and does not require ES when transmitting, the system efficiency can be expected to increase through power saving of R / base station and resource recycling.

[0295] Exceptionally, there may be cases where EH using ES is not required for receive or transmit operations, in which case the R / base station may omit ES transmission and T may not expect ES transmission. These exceptional cases may include:

[0296] (1) When EH can be performed (without ES) via R=>T signal / channel during receiving operation (in this case, R=>T signal / channel can be transmitted before or from the time of transmitting R=>T signal / channel for communication)

[0297] (2) When using a separate energy / power source (e.g., a separate battery) to amplify the input signal (low-noise) during receiving operation

[0298] (3) When using a separate energy / power source (e.g., a separate battery) for amplification, delayed transmission, etc. during transmission operation.

[0299] (4) When performing EH using RF energy other than ES or other energy sources such as solar, thermal, wind, kinetic, etc. during receiving / transmitting operation, or when it is possible to do so.

[0300] [Application of in-band, guard-band, and standalone band of FDM ES transmission method]

[0301] FDM ES transmission method can be applied when both ES and R<=>T signal / channel are placed / configured / instructed in-band of a coexisting system.

[0302] In addition, the FDM ES transmission method can be applied when the R<=>T signal / channel is placed / configured / indicated in the in-band and the ES is placed / configured / indicated in the guard-band. In this case, the ES placed / configured / indicated in the guard-band can be shared or common between Ambient IoT devices that communicate with (different) Rs within each band through the R<=>T signal / channel placed / configured / indicated in-band in different frequency bands adjacent to the ES. Or, conversely, the FDM ES transmission method can also be applied when the R<=>T signal / channel is placed / configured / indicated in the guard-band and the ES is placed / configured / indicated in-band.

[0303] Additionally, the FDM ES transmission scheme can be applied when both the ES and the R<=>T signal / channel are placed / configured / indicated in the guard-band of the coexistence system. In this case, the ES placed / configured / indicated in the guard-band can be shared or common among Ambient IoT devices that communicate with (different) Rs via the R<=>T signal / channel allocated to different frequency / time domains within the guard-band.

[0304] Additionally, the FDM ES transmission method can be applied when both ES and R<=>T signal / channel are deployed / configured / indicated on separate bands / carriers (Standalone band / carrier deployment).

[0305] Information / parameters required to support the FDM ES transmission method, including the presence / size / location of the above F-gap, T-Gap1, T-Gap2, time gap for periodically performing EH operation, etc., can be set / instructed by the R / base station to Ambient IoT devices in a device-specific, device-common, or broadcast signaling manner. In addition, information on the presence / size / location of the F-gap, etc., can be set / instructed in a manner such as broadcast signaling (e.g., system information including SIB1), cell-specific / UE-specific RRC signaling, or dynamic (e.g., MAC CE, DCI) signaling of the corresponding communication system in order to avoid / control interference / collision when using resources in the coexisting communication system (LTE, NR, or next-generation communication system), for example, for rate-matching purposes in the NR system.

[0306]

[0307] FIG. 12 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0308] FIG. 13 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0309] FIG. 14 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0310] [TDM ES transmission method]

[0311] The TDM ES transmission method may be a method of transmitting ES in a time domain that is distinct from the R<=>T signal / channel. FIGS. 12, 13, and 14 are examples of operating ES and R=>T signal / channel by arranging / configuring / instructing them in the TDM ES transmission method in the NR licensed FDD band. In the examples of FIGS. 12 / 13 / 14, the cases where ES transmission is requested / provided for R=>T and T=>R transmission of the EH device are all exemplified, but in some cases, ES transmission may not be requested / provided. FIG. 12 may be an example for Device C that can operate in FDD or HD-FDD in the FDD band because independent signal generation is possible. FIGS. 13 and 14 may be examples for Device A / B that can perform T=>R transmission based on backscattering modulation. Fig. 13 may be a case where ES is transmitted / supplied to FDD DL to support EH and R=>T reception, and T=>R backscattering transmission operation. Fig. 14 may be a case where ES is transmitted / supplied to FDD UL to support EH and R=>T reception, and T=>R backscattering transmission operation.

[0312]

[0313] FIG. 15 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0314] [Method of transmitting ES before the start of R=>T signal / channel transmission]

[0315] In the TDM ES transmission method, the ES may need to be transmitted before the R=>T signal / channel transmission start time. In this case, for the EH for the R=>T signal / channel reception operation of the EH device, the R / base station transmits the ES before the R=>T signal / channel transmission start time, and the T can perform the R=>T signal / channel reception operation from the time when the EH is completed using the ES.

[0316] The following detailed methods are proposed depending on whether there is a time gap (T-Gap1) between the ES transmission section and the start time of R=>T signal / channel reception.

[0317] (1) TDM with time gap

[0318] (1-1) T-Gap1 may be required for transmitter / receiver warm-up, transmitter / receiver state transition, etc. to start receiving R=>T signal / channel after EH through ES.

[0319] (1-2) T-Gap1 may be required for RF switching of the EH device, and the T-Gap1 value may be determined / set / indicated to include the RF switching time. At this time, T-Gap1 may be set / indicated regardless of the frequency positions of the ES and R=>T signal / channel, or may be set / indicated only when the difference between the two values ​​is greater than a specific value. The specific value may be determined by the RF / baseband bandwidth of the Ambient IoT device. Alternatively, T-Gap1 may be set / indicated only when the frequency span including the ES and R=>T signal / channel exceeds the RF / baseband bandwidth of the Ambient IoT device.

[0320] (1-3) Through T-Gap1, it is expected that the system efficiency will be increased through R / base station power reduction and resource recycling.

[0321] (1-4) EH device may not expect / assume ES transmission during the requested or configured / instructed T-Gap1.

[0322] (1-5) The required T-Gap1 value may differ depending on the Ambient IoT device type / class. For R / base station scheduling or resource recycling, for example, to device (type / class)-specifically determine the timing of ES or R=>T signal / channel transmission, T may need to report the required T-Gap1 information to the R / base station. Or, the R / base station may need to collect the required T-Gap1 information from T (during the initial connection process or after connection). The required T-Gap1 information may be replaced with the device type / class information by the required T-Gap1 value that is fixed for each device type / class.

[0323] (2) TDM without time gap

[0324] (2-1) In cases where it is difficult to set / indicate and apply a single value due to different T-Gap1 requirements for each EH device (type / class), or where it is difficult for the R / base station to recycle resources during T-Gap1, etc., the TDM ES transmission method can be applied without a time gap.

[0325] (2-2) This may be the case when the T-Gap1 setting value is set to 0.

[0326] In the example of Fig. 15, a time gap (T-Gap4) may be required for link direction switching (e.g., DL-to-UL switching) between the T=>R signal / channel and the ES. The T-Gap4 value may be determined / configured / indicated to include the link direction switching time. For example, when transmitting the T=>R signal / channel in the FDD UL band of an LTE / NR / next-generation communication system and transmitting the ES in the FDD DL band, the T-Gap4 value may be determined / configured / indicated to include the link direction switching (e.g., DL-to-UL switching) time. Alternatively, the T-Gap4 setting considering the link direction switching (e.g., DL-to-UL switching) time may be set / supported / allowed only when the EH device operates in half-duplex in the FDD band. In this case, the EH device operating in half-duplex may not expect ES reception or EH during T-Gap4. T-Gap4 can be set / indicated as a separate parameter from T-Gap2, or (if there is no separate T-Gap4 setting) applied / replaced by the T-Gap2 value.

[0327]

[0328] FIG. 16 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0329] [Method of transmitting ES before the start of T=>R signal / channel transmission]

[0330] In the TDM ES transmission method, the ES may need to be transmitted before the T=>R signal / channel transmission start time. In this case, for the EH for the T=>R signal / channel transmission operation of the EH device, the R / base station transmits the ES before the T=>R signal / channel transmission start time, and the T can perform the T=>R signal / channel transmission operation from the time when the EH is completed using the ES.

[0331] Depending on whether there is a time gap (T-Gap2) between the ES transmission section and the start time of T=>R signal / channel transmission, the following detailed methods are proposed.

[0332] (1) TDM with time gap

[0333] (1-1) T-Gap2 may be required for transmitter / receiver warm-up, transmitter / receiver state transition, etc. to start T=>R signal / channel transmission after EH through ES.

[0334] (1-2) T-Gap2 may be required for RF switching or link direction switching (e.g., DL-to-UL switching) of the EH device, and the T-Gap2 value may be determined / configured / indicated to include the RF switching or link direction switching time. For example, when transmitting ES in the FDD DL band of an LTE / NR / next-generation communication system and transmitting T=>R signal / channel in the FDD UL band, the T-Gap2 value may be determined / configured / indicated to include the link direction switching (e.g., DL-to-UL switching) time. Alternatively, the T-Gap2 setting considering the link direction switching (e.g., DL-to-UL switching) time may be set / supported / allowed only when the EH device operates in half-duplex in the FDD band. In this case, the EH device operating in half-duplex may not expect ES reception or EH during T-Gap2.

[0335] (1-3) Through T-Gap2, it is expected that the system efficiency will be increased through R / base station power reduction and resource recycling.

[0336] (1-4) The EH device may not expect / assume ES transmission during the requested or configured / instructed / allowed T-Gap2 if the EH device operates in half-duplex.

[0337] (1-5) The required T-Gap2 value may differ depending on the Ambient IoT device type / class. For R / base station scheduling or resource recycling, for example, to device (type / class)-specifically determine the timing of ES or T=>R signal / channel transmission, T may need to report the required T-Gap2 information to the R / base station. Or, the R / base station may need to collect the required T-Gap2 information from T (during the initial connection process or after connection). The required T-Gap2 information may be replaced with the device type / class information by the required T-Gap2 value that is fixed for each device type / class.

[0338] (2) TDM without time gap

[0339] (2-1) There may be cases where T-Gap2 setting is unnecessary for the purposes mentioned above. For example, there may be cases where it is difficult to set a single value due to factors such as different T-Gap2 requirements for each EH device (type / class), or when the R / base station has difficulty recycling resources during T-Gap2.

[0340] (2-2) In cases where it is difficult to set / indicate and apply a single value due to different T-Gap2 requirements for each EH device (type / class), or in cases where it is difficult for the R / base station to recycle resources during T-Gap2, etc., the TDM ES transmission method can be applied without a time gap.

[0341] (2-3) This may be the case when the T-Gap2 setting value is set to 0.

[0342] In the example of Fig. 16, a time gap (T-Gap3) may be required for RF switching between the R=>T signal / channel and the ES. The T-Gap3 value can be determined / set / indicated to include the RF switching time. At this time, T-Gap3 can be set / indicated regardless of the frequency positions of the R=>T signal / channel and the ES, or can be set / indicated only when the difference between the two values ​​is greater than a specific value. The specific value can be determined by the RF / baseband bandwidth of the Ambient IoT device. Alternatively, T-Gap3 can be set / indicated only when the frequency span including the R=>T signal / channel and the ES exceeds the RF / baseband bandwidth of the Ambient IoT device. T-Gap3 can be set / indicated as a separate parameter from T-Gap1, or (if there is no separate T-Gap3 setting) can be applied / replaced with the T-Gap1 value.

[0343]

[0344] FIG. 17 is a diagram illustrating an example of a TDM ES transmission method in an NR licensed FDD band in a system applicable to the present disclosure.

[0345] [Method of transmitting ES before the start of R=>T signal / channel transmission or before the start of T=>R signal / channel transmission]

[0346] In the TDM ES transmission method, for EH for R=>T signal / channel reception operation or T=>R signal / channel transmission operation of EH device, R / base station transmits ES before R=>T signal / channel transmission start time or T=>R signal / channel transmission start time, and T can perform R=>T signal / channel reception operation or T=>R signal / channel transmission operation from the time point when EH is completed using ES.

[0347]

[0348] [How to set the time gap parameter(s)]

[0349] In the above methods, time gap parameters such as T-Gap1, T-Gap2, T-Gap3, and T-Gap4 may be values ​​that are individually / independently requested / set / indicated, or may be values ​​that are interrelated. In the former case, they may be defined as individual / independent parameters and reported / set / indicated respectively. In the latter case, for example, some parameter(s) among the time gap parameters may be defined / set, and the remaining parameter(s) may be calculated / inferred from the defined / set parameter(s).

[0350] - After defining the relationship between T-Gap1 and T-Gap2 in the form of Eg, T-Gap2 = X*T-Gap1 or T-Gap1 = Y*T-Gap2, you can determine T-Gap2 or T-Gap1 by setting only T-Gap1 or T-Gap2, respectively. At this time, the values ​​of X and Y can each be one of the integer values ​​greater than 0. If X or Y is 1, they can be the same value.

[0351]

[0352] Information required to support TDM ES transmission methods including T-Gap1, T-Gap2, T-Gap3, T-Gap4, etc. can be set / instructed by the R / base station to Ambient IoT devices in a device-specific, device-common, or broadcast signaling manner. In addition, information required to support these TDM ES transmission methods can be set / instructed in a manner such as broadcast signaling (e.g., system information including SIB1), cell-specific / UE-specific RRC signaling, or dynamic (e.g., MAC CE, DCI) signaling of the corresponding communication system in order to avoid / control interference / collision when using resources in the coexisting communication system (LTE, NR, or next-generation communication system), for example, for rate-matching purposes in the NR system.

[0353]

[0354] [TD window ES transmission method] ES transmission method based on time-domain window

[0355] The TD window ES transmission method may be a method of defining a specific time period (TD window) from the start / end time of ES transmission or the end time of the ES transmission section / occasion, and omitting ES transmission when (additional) R=>T signal / channel transmission or T=>R signal / channel transmission occurs within the TD window. This method can be (additionally) applied to the above FDM / TDM transmission methods, and can be expected to have the effect of saving R / base station ES transmission resources.

[0356] To implement this behavior, a TD window for ES transmission or transmission skipping can be defined and operated. The TD window can be set / indicated (by EH device type / class) considering the EH requirement of the EH device (type / class). For this purpose, the EH device can report its own EH device type / class information, EH requirement-related information, or directly supported / preferred TD window size, etc. to the R / base station.

[0357] In the above FDM, TDM, and TD window-based ES transmission methods, ES transmission resources can be set / allocated / instructed periodically (during a specific time period). Here, the meaning of "periodically" may include the meaning of "periodically repeating a specific pattern." This may be for the purpose of supporting / triggering periodic R<=>T communication, or for the purpose of causing the EH device to periodically perform EH operation by periodically transmitting ES, or for the purpose of always maintaining the EH device in a state where R<=>T communication is possible (during a specific time period) depending on the period setting.

[0358] In order to support such periodic configuration / allocation / instruction, the R / base station can configure / allocate / instruct the cycle (PES) and the ES transmission interval (DES) for each cycle, or the ES transmission pattern (in the cycle and the cycle). For example, if such periodic ES transmission cycle configuration is called ES cycle configuration, T can periodically receive ES and perform EH operation based on this ES cycle configuration value {PES, DES}. The R / base station can operate by configuring / allocating / instructing one or more such ES cycles. In this case, each ES cycle can have different {PEH, DEH} values, which can be for the purpose of supporting different device types / classes and / or various traffic. Traffic can be defined, for example, by the cycle, amount, pattern, etc. of data (to be collected).

[0359] In addition, in order to support EH operation through periodic ES reception of the EH device, the size of the continuous R<=>T signal / channel transmission / reception interval can be limited to a specific time (including the case where the EH operation must be performed after this specific time), or EH through ES can be set / instructed / allowed to be performed during a specific time interval (by setting a time gap) at a specific period.

[0360]

[0361] ES resource configuration / allocation method

[0362] In order to configure / allocate ES transmission resources for supporting EH devices, a device-specific ES resource configuration / allocation method and a device-common ES resource configuration / allocation method are proposed. The ES resource configuration / allocation method and / or the ES transmission method may be applicable to all EH devices, e.g., Devices A / B / C, or may be limited to an EH device that supports operations based on such configuration / allocation or is capable of independent signal generation, e.g., Device C.

[0363] Next, we explain each proposed method.

[0364] FIG. 18 is a diagram illustrating an example of a device-specific ES resource setting method in a system applicable to the present disclosure.

[0365] FIG. 19 is a diagram illustrating an example of a device-specific ES resource setting method in a system applicable to the present disclosure.

[0366] [Device-specific ES resource configuration method]

[0367] In the case of device-specific ES resource configuration, DL / UL resources for data communication and separate ES resources can be configured / instructed and operated for each device. Although the configuration is device-specific, it can include cases where the R / base station operates shared / common ES resources between T / Ambient IoT devices through the same configuration. DL / UL resources for Ambient IoT data communication can be operated by separately configuring DL and UL (example in Fig. 18) or by configuring only one of DL and UL (example in Fig. 19).

[0368] [Example of Figure 18] Example of Device C (T=>R independent signal generation)

[0369] - For device types / classes that perform UL transmission by creating a DL channel / signal and a separate UL channel / signal, such as Device C, DL and UL resources can be set up and operated separately. Therefore, in this case, considering separate ES transmission resources, {ES, DL, UL} resources can be set up and operated separately for each device. DL can be interpreted / replaced as meaning R=>T, and UL can be interpreted as meaning T=>R. (See Terminology above)

[0370] [Example of Figure 19] Example of Device A / B (T=>R backscatter modulation)

[0371] - In the case of a device type that performs UL transmission through backscatter modulation, such as Device A / B, instead of separately setting DL and UL resources, one of DL and UL, or a DL / UL common resource can be set and operated. In this case, one of the resources set can be a CW resource for backscattering, which can be interpreted / replaced with an R<=>T transmission resource as shown in Fig. 19. Consequently, in this case, if ES transmission resources are also considered, {ES, DL / UL} or {ES, CW} resources can be separately set and operated for each device.

[0372] [Device-common ES resource configuration method]

[0373] In the case of the device-common ES resource configuration method, the R / base station configures / indicates common / shared resources for ES transmission, and multiple EH devices can perform EH operations by receiving ES through the configured / indicated common resources. The device-common configuration method may include a cell-specific configuration method and a group-specific configuration method. For example, the R / base station can configure / indicate ES transmission resources in a cell-specific configuration method, thereby allowing all EH devices within the cell to perform EH through the same configured / indicated ES transmission resources.

[0374] In the case of cell-specific configuration, specific time / freq resources can be allocated and used for ES transmission in cells supporting EH devices.

[0375] Alternatively, the R / base station can configure / instruct ES transmission resources for each device group or for a specific device group in a device group-specific configuration manner, thereby allowing EH devices to perform EH operations through the configured / instructed ES transmission resources. In order to configure / instruct ES transmission resources for each EH device in a device group-specific configuration manner, EH devices can be assigned a device group ID to which they belong in advance, and each device group-specific ES resource configuration can include group ID(s) for which the use of the corresponding ES resource is configured / instructed / allowed. If a device group-specific ES resource configuration does not include a device group ID, the ES resource may be configured / instructed / allowed for use by all EH devices. For example, in this case, both group-specific ES resource configuration / instruction and cell-specific ES resource configuration / instruction can be supported depending on whether a group ID is included using a single device group-specific ES resource configuration manner.

[0376] To support multi-cell / TRP operation, coordination of ES transmission resources between cells / TRPs may be required. For example, for EH purposes, securing ES SNR is more important than interference between cells / TRPs (although interference may be helpful). Therefore, in multi-cell / TRP operation, multiple cells / TRPs may be allowed to transmit or transmit the same ES using the same time / freq resources. In this case, the device-common configuration may be cell- / TRP-common, rather than cell- / TRP-specific. That is, instead of configuring / indicating the same time / freq resources for each cell, the device-common ES configuration may include cell / TRP ID information(s) that transmit ES using the corresponding resources, along with the common time / freq resource configuration.

[0377] Device group-specific ES resource configuration can be used to configure / indicate / allow ES resources to be used by EH device type / class when multiple EH device types / classes exist in the same cell. For example, it can be used to support Ambient IoT device types / classes with different EH requirements in the same cell. The EH requirement can be defined as the amount of EH required for an EH device to perform an R=>T signal / channel reception or T=>R signal / channel transmission operation, or how much time / frequency interval an ES must be received / accumulated for such operation, etc.

[0378] (1) For example, group-specific ES configuration 1 can be separately configured and operated for a device group (type / class) with high EH requirement (i.e., requiring a large amount of EH), and group-specific ES configuration 2 can be separately configured and operated for a device group (type / class) with low EH requirement (i.e., requiring a small amount of EH). More generally, N device group-specific ES resource configurations can be operated considering N different device types / classes requiring EH requirements.

[0379] (1-1) For example, among Device A / B / C, Device C may belong to a device type / class with a high EH requirement, and Device A may be classified as a device type / class with a low EH requirement. Device B may be classified as a type / class like Device A in terms of EH requirement, or may be classified as a type / class with a higher EH requirement than Device A, such as the same type / class as Device C, depending on the capacitor capacity of Device B.

[0380] (1-2) The R / base station can configure / instruct / allow device group-to-ES resource mapping by considering the characteristics of each device type / class in terms of these EH requirements. For example, when operating two device group-specific ES resource configurations, configuration 1 can include group 1 consisting of Device Cs, and configuration 2 can include group 2 consisting of Device A / B. Or, in the above example, if N=3, configurations 1, 2, and 3 can be mapped to Device A, B, and C types / classes, respectively.

[0381] In case multiple EH device types / classes are to be supported in the same cell, as an alternative to the device group-specific setting, the same ES transmission resources can be set / indicated / allowed in a cell-specific setting manner, but the ES time / freq resources used for EH can be set / indicated / allowed differently for each device type / class.

[0382] (2) For example, for device types / classes with high EH requirements, EH can be configured / instructed / allowed to use all of the cell-specific ES configuration resources, while device types / classes with low EH requirements can be configured / instructed / allowed to use only a portion of them.

[0383] (3) For example, it may include cases where the same frequency location / bandwidth is set for all device types / classes, but EH is performed using different time intervals for each device type / class, or cases where all device types / classes use the same time interval, but EH is performed using different frequency locations / bandwidths for each device type / class.

[0384] (4) For the above operation, the R / base station can set ES transmission resources by assuming a specific device type / class when setting cell-specific ES resources. The specific device type / class may be, for example, the most advanced or the device type / class with the highest EH requirement within the cell or among the device types / classes for which information is to be collected. For example, when supporting Device A / B / C, cell-specific ES transmission resources can be set based on Device C (its EH requirement).

[0385] FIG. 20 is a diagram illustrating an example of a Device-common ES resource setting method in a system applicable to the present disclosure.

[0386] [Example of Figure 20] Example of Device-common ES resource configuration method

[0387] - In the case of a device type that performs UL transmission through backscatter modulation, such as Device A / B, DL / UL or R<=>T resources or CW resources are set for each device, but in the case of ES resources, they are set cell-specifically or device group-specifically to perform EH. Fig. 20 illustrates a case where the reader (that performs R<=>T transmission) and the BS / node / UE that supplies ES are different, but the case where the left BS and the right BS / node / UE of Fig. 20 are the same BS / node / UE may be included.

[0388] [Hybrid ES Resource Configuration Method]

[0389] In the case of the Hybrid ES resource configuration method, it can be operated by using both device-specific ES resource configuration and device-common ES resource configuration at the same time. In this case, the Ambient IoT device first checks whether the device-specific ES configuration exists, and if the device-specific ES configuration exists, it performs EH through the ES resource configured / instructed / allowed in the configuration. Otherwise, it can perform the EH operation through the ES resource configured / instructed / allowed in the device-common ES configuration.

[0390] Alternatively, an Ambient IoT device can perform EH by using device-common ES configuration resources by default, and additionally perform EH by using device-specific ES configuration resources if device-specific ES configuration resources exist. In this case, the device-specific ES configuration resources may mean additional EH resources that the R / base station additionally configures in addition to the device-common ES configuration resources, considering the EH requirements of the EH device or to shorten the EH time. In this case, the device-common ES configuration resources may be based on the lightest or lowest EH requirement device type / class (e.g., Device A). For advanced or highest EH requirement device types / classes (e.g., Device C), both the device-common ES configuration resources and the device-specific (additional) ES configuration resources can be used to perform EH operations. The device-common ES configuration resources and the device-specific ES configuration resources can be configured / instructed / allowed in FDM / TDM format.

[0391] ES transmitted through device-common ES settings and ES transmitted through device-specific ES settings are considered in consideration of overall ET efficiency, efficient use of resources, impact on coexisting systems, etc.

[0392] (1) Waveform parameters (e.g., different number of tones) can be set individually / independently.

[0393] (1-1) The minimum resources (e.g., single-tone) can be set / indicated / allowed through the device-common ES settings, and additional resources (e.g., additional tone(s), ultimately the device can perform EH operation through multi-tone ES through the device-common and device-specific settings) can be set / indicated / allowed through the device-specific ES settings. This method is expected to have the effect of minimizing the use of resources for ES transmission by expanding the use of resources for ES transmission only when necessary.

[0394] (1-2) Alternatively, multi-tone ES can be set / indicated / allowed through device-common ES settings, and (additional) single- / multi-tone ES can be set / indicated / allowed through device-specific settings. This method also has the effect of minimizing resource usage for ES transmission by setting / indicating / allowing basic multi-tone ES through device-common ES settings, and setting / indicating / allowing additional ES only when there are devices that require additional EH requirements.

[0395] (2) In addition, ES transmission power, ES transmission duty cycle (information on the section in which ES is actually transmitted within the cycle), ES transmission periodicity, etc. can be set individually / independently.

[0396] (3) For the above individual / independent settings, ES transmission-related parameters such as ES waveform (e.g., number of tones), transmission power, ES transmission duty cycle, ES periodicity, etc. can be defined and included in the device-common and device-specific ES settings.

[0397] Alternatively, the R / base station can select between device-specific and device-common ES configuration methods and signal the selected configuration method to EH devices. The signaling method can be device-specific, device-common, or broadcast signaling.

[0398] All or part of the parameters (e.g., frequency location / bandwidth and transmission section information) of the above ES resource configuration / allocation information and / or configuration / allocation information for supporting ES transmission methods for supporting EH devices may be configured / indicated in a manner such as broadcast signaling (e.g., system information including SIB1), cell-specific / UE-specific RRC signaling, or dynamic (e.g., MAC CE, DCI) signaling of the corresponding communication system in order to avoid / control interference / collision when using resources in a coexisting communication system (LTE, NR, or next-generation communication system), for example, for rate-matching purposes in an NR system.

[0399] Alternatively, all or part of the parameters (e.g., frequency location / bandwidth and transmission section information) of the ES resource configuration / allocation information and / or configuration / allocation information for supporting ES transmission methods for supporting EH devices may be transmitted / configured / allocated / instructed by the base station to R, which is the ES transmission entity, when R transmitting the ES is not a base station but an intermediate node, assisting node, UE, etc.

[0400]

[0401] [Description of the first device (Tag / ambient IoT device or user equipment (UE)) claim]

[0402] The embodiments described below are specifically described with reference to FIG. 21 in terms of the operation of a first device (Tag / ambient IoT device or user equipment (UE)). The methods described below are distinguished for convenience of explanation, and it is understood that some components of one method may be substituted for some components of another method, or may be applied in combination with each other, as long as they are not mutually exclusive.

[0403] FIG. 21 is a diagram illustrating an example of an operation process of a first device in a system applicable to the present disclosure.

[0404] At step S2110, the first device receives a multiplexed energizing signal (ES) and a first link signal from the second device.

[0405] At step S2120, the first device transmits a second link signal to the second device.

[0406] The ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed. The ES is based on CW (carrier wave), and the ES is related to energy supply to the first device.

[0407]

[0408] According to various embodiments of the present disclosure, the waveform of the ES may be based on a single tone or multi tone.

[0409] According to various embodiments of the present disclosure, the ES, the first link signal, and the second link signal can be time-based multiplexed or frequency-based multiplexed using a time gap or a frequency gap.

[0410] According to various embodiments of the present disclosure, the embodiment of FIG. 21 may further include a step of receiving setting information related to the ES from the second device.

[0411] According to various embodiments of the present disclosure, the ES may be received based on the configuration information. The configuration information may be related to one or more of the transmission period, transmission pattern, time gap, and frequency gap of the ES.

[0412] According to various embodiments of the present disclosure, the first link signal and the second link signal can be frequency-based multiplexed using the ES and the frequency gap.

[0413] According to various embodiments of the present disclosure, the time gap may include at least one of a first time gap and a second time gap. The ES may be received prior to the reception of the first link signal by the first time gap. Alternatively, the ES may be received prior to the transmission of the second link signal by the second time gap after the reception of the first link signal.

[0414] According to various embodiments of the present disclosure, the embodiment of FIG. 21 may further include a step of receiving a broadcast signal related to a resource of the ES from the second node.

[0415] According to various embodiments of the present disclosure, the broadcast signal may be related to avoiding interference or collision with other devices with respect to the resource of the ES.

[0416]

[0417] According to various embodiments of the present disclosure, a first device is provided in a wireless communication system. The first device includes a transceiver and at least one processor, wherein the at least one processor may be configured to perform the operating method of the first device according to FIG. 21.

[0418]

[0419] According to various embodiments of the present disclosure, an apparatus for controlling a first device in a wireless communication system is provided. The apparatus includes at least one processor and at least one memory operably connected to the at least one processor. The at least one memory may be configured to store instructions for performing an operating method of the first device according to FIG. 21 based on instructions executed by the at least one processor.

[0420]

[0421] According to various embodiments of the present disclosure, one or more non-transitory computer-readable media (CRM) storing one or more commands are provided. The one or more commands, when executed by one or more processors, perform operations, and the operations may include a method of operating a first device according to FIG. 21.

[0422]

[0423] [Description of the second device (Reader / interrogator or base station (BS)) claim]

[0424] The embodiments described below are specifically described with reference to FIG. 22 in terms of the operation of a second device (Reader / interrogator or base station (BS)). The methods described below are distinguished for convenience of explanation, and it is understood that some components of one method may be substituted for some components of another method, or may be applied in combination with each other, as long as they are not mutually exclusive.

[0425] FIG. 22 is a diagram illustrating an example of an operation process of a second device in a system applicable to the present disclosure.

[0426] At step S2210, the second device transmits a multiplexed energizing signal (ES) and a first link signal to the first device.

[0427] At step S2220, the second device receives a second link signal from the first device.

[0428] The ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed. The ES is based on CW (carrier wave), and the ES is related to energy supply to the first device.

[0429]

[0430] According to various embodiments of the present disclosure, the waveform of the ES may be based on a single tone or multi tone.

[0431] According to various embodiments of the present disclosure, the ES, the first link signal, and the second link signal can be time-based multiplexed or frequency-based multiplexed using a time gap or a frequency gap.

[0432] According to various embodiments of the present disclosure, the embodiment of FIG. 22 may further include a step of transmitting setting information related to the ES to the first device.

[0433] According to various embodiments of the present disclosure, the ES may be transmitted based on the configuration information. The configuration information may be related to one or more of the transmission period, transmission pattern, time gap, and frequency gap of the ES.

[0434] According to various embodiments of the present disclosure, the first link signal and the second link signal can be frequency-based multiplexed using the ES and the frequency gap.

[0435] According to various embodiments of the present disclosure, the time gap may include at least one of a first time gap and a second time gap. The ES may be transmitted prior to transmission of the first link signal by the first time gap. Alternatively, the ES may be transmitted prior to reception of the second link signal after transmission of the first link signal by the second time gap.

[0436] According to various embodiments of the present disclosure, the embodiment of FIG. 22 may further include a step of transmitting a broadcast signal related to the resource of the ES.

[0437] According to various embodiments of the present disclosure, the broadcast signal may be related to avoiding interference or collision with other devices with respect to the resource of the ES.

[0438]

[0439] According to various embodiments of the present disclosure, a second device is provided in a wireless communication system. The second device includes a transceiver and at least one processor, wherein the at least one processor may be configured to perform the operating method of the second device according to FIG. 22.

[0440]

[0441] According to various embodiments of the present disclosure, an apparatus for controlling a second device in a wireless communication system is provided. The apparatus includes at least one processor and at least one memory operably connected to the at least one processor. The at least one memory may be configured to store instructions for performing an operating method of the second device according to FIG. 22 based on instructions executed by the at least one processor.

[0442]

[0443] According to various embodiments of the present disclosure, one or more non-transitory computer-readable media (CRM) storing one or more instructions are provided. The one or more instructions, when executed by one or more processors, perform operations, and the operations may include a method of operating a second device according to FIG. 22.

[0444]

[0445] Wireless devices applicable to the present disclosure

[0446] Below, examples of wireless devices to which various embodiments of the present disclosure are applied are described.

[0447] FIG. 23 is a diagram illustrating an example of the structure of a first device and a second device in a system applicable to the present disclosure.

[0448] The first device (1600) may include a processor (1610), an antenna unit (1620), a transceiver (1630), and a memory (1640).

[0449] The processor (1610) performs baseband-related signal processing and may include a higher layer processing unit (1611) and a physical layer processing unit (1615). The higher layer processing unit (1611) may process operations of a MAC layer, an RRC layer, or higher layers. The physical layer processing unit (1615) may process operations of a PHY layer. For example, when the first device (1600) is a base station device in base station-to-terminal communication, the physical layer processing unit (1615) may perform uplink reception signal processing, downlink transmission signal processing, etc. For example, when the first device (1600) is a first terminal device in terminal-to-terminal communication, the physical layer processing unit (1615) may perform downlink reception signal processing, uplink transmission signal processing, sidelink transmission signal processing, etc. In addition to performing baseband-related signal processing, the processor (1610) may also control the overall operation of the first device (1600).

[0450] The antenna unit (1620) may include one or more physical antennas, and when it includes multiple antennas, it may support MIMO transmission and reception. The transceiver (1630) may include an RF (Radio Frequency) transmitter and an RF receiver. The memory (1640) may store information processed by the processor (1610), and software, an operating system, applications, etc. related to the operation of the first device (1600), and may also include components such as a buffer.

[0451] The processor (1610) of the first device (1600) may be configured to implement the operation of the base station in the base station-to-terminal communication (or the operation of the first terminal device in the terminal-to-terminal communication) in the embodiments described in the present disclosure.

[0452]

[0453] The second device (1650) may include a processor (1660), an antenna unit (1670), a transceiver (1680), and a memory (1690).

[0454] The processor (1660) performs baseband-related signal processing and may include a higher layer processing unit (1661) and a physical layer processing unit (1665). The higher layer processing unit (1661) may process operations of a MAC layer, an RRC layer, or higher layers. The physical layer processing unit (1665) may process operations of a PHY layer. For example, when the second device (1650) is a terminal device in base station-terminal communication, the physical layer processing unit (1665) may perform downlink reception signal processing, uplink transmission signal processing, etc. For example, when the second device (1650) is a second terminal device in terminal-to-terminal communication, the physical layer processing unit (1665) may perform downlink reception signal processing, uplink transmission signal processing, sidelink reception signal processing, etc. In addition to performing baseband-related signal processing, the processor (1660) may also control the overall operation of the second device (1660).

[0455] The antenna unit (1670) may include one or more physical antennas, and when including multiple antennas, may support MIMO transmission and reception. The transceiver (1680) may include an RF transmitter and an RF receiver. The memory (1690) may store information processed by the processor (1660), and software, an operating system, applications, etc. related to the operation of the second device (1650), and may also include components such as a buffer.

[0456] The processor (1660) of the second device (1650) may be configured to implement operations of the terminal in base station-to-terminal communication (or operations of the second terminal device in terminal-to-terminal communication) in the embodiments described in the present disclosure.

[0457] In the operation of the first device (1600) and the second device (1650), the same explanations given for the base station and the terminal (or the first terminal and the second terminal in the terminal-to-terminal communication) in the examples of the present disclosure may be applied, and any duplicate explanations are omitted.

[0458]

[0459] Here, the wireless communication technology implemented in the device (1600, 1650) of the present disclosure may include various other wireless communication technologies as well as LTE, NR, and 6G.

[0460]

[0461] The claims described in the various embodiments of the present disclosure may be combined in various ways. For example, the technical features of the method claims of the various embodiments of the present disclosure may be combined and implemented as a device, and the technical features of the device claims of the various embodiments of the present disclosure may be combined and implemented as a method. Furthermore, the technical features of the method claims of the various embodiments of the present disclosure may be combined and implemented as a device, and the technical features of the method claims of the various embodiments of the present disclosure may be combined and implemented as a method.

Claims

1. In a method performed by a first device, A step of receiving a multiplexed ES (energizing signal) and a first link signal from a second device; comprising a step of transmitting a second link signal to the second device; The above ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed, The above ES is based on CW (carrier wave), and the ES is related to energy supply to the first device. method.

2. In paragraph 1, The waveform of the above ES is based on a single tone or multi tone. method.

3. In paragraph 1, The above ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed using a time gap or a frequency gap. method.

4. In paragraph 3, Further comprising a step of receiving setting information related to the ES from the second device, The above ES is received based on the above setting information, The above setting information is related to one or more of the transmission period, transmission pattern, time gap, and frequency gap of the ES. method.

5. In paragraph 4, The first link signal and the second link signal are frequency-based multiplexed using the ES and the frequency gap. method.

6. In paragraph 4, The above time gap includes at least one of a first time gap and a second time gap, The above ES is received prior to the first time gap than the reception of the first link signal, or The above ES is received before the second time gap before the transmission of the second link signal after the reception of the first link signal. method.

7. In paragraph 1, Further comprising a step of receiving a broadcast signal related to the resource of the ES from the second node, The above broadcast signal is related to avoiding interference or collision with other devices for the above resources of the ES. method.

8. In a method performed by a second device, A step of transmitting a multiplexed ES (energizing signal) and a first link signal to a first device; comprising a step of receiving a second link signal from the first device; The above ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed, The above ES is based on CW (carrier wave), and the ES is related to energy supply to the first device. method.

9. In paragraph 8, The waveform of the above ES is based on a single tone or multi tone. method.

10. In paragraph 8, The above ES, the first link signal, and the second link signal are time-based multiplexed or frequency-based multiplexed using a time gap or a frequency gap. method.

11. In paragraph 10, Further comprising a step of transmitting setting information related to the ES to the first device, The above ES is transmitted based on the above setting information, The above setting information is related to one or more of the transmission period, transmission pattern, time gap, and frequency gap of the ES. method.

12. In paragraph 11, The first link signal and the second link signal are frequency-based multiplexed using the ES and the frequency gap. method.

13. In paragraph 11, The above time gap includes at least one of a first time gap and a second time gap, The above ES is transmitted prior to the transmission of the first link signal by the first time gap, or The above ES is transmitted before the second time gap, after the transmission of the first link signal, and before the reception of the second link signal. method.

14. In paragraph 8, Further comprising a step of transmitting a broadcast signal related to the resource of the above ES, The above broadcast signal is related to avoiding interference or collision with other devices for the above resources of the ES. method.

15. In the first device, Transmitter and receiver; at least one processor; and At least one memory operably connectable to said at least one processor and storing instructions that, when executed by said at least one processor, perform operations; The above actions are, Comprising all steps of the method according to any one of claims 1 to 7, First device.

16. In the second device, Transmitter and receiver; at least one processor; and At least one memory operably connectable to said at least one processor and storing instructions that, when executed by said at least one processor, perform operations; The above actions are, Comprising all steps of the method according to any one of claims 8 to 14, Second device.

17. In a control device that controls the first device, at least one processor; and comprising at least one memory operably connected to at least one of the processors; The at least one memory stores instructions for performing operations based on being executed by the at least one processor, The above actions are, Comprising all steps of the method according to any one of claims 1 to 7, controller.

18. In a control device that controls a second device, at least one processor; and comprising at least one memory operably connected to at least one of the processors; The at least one memory stores instructions for performing operations based on being executed by the at least one processor, The above actions are, Comprising all steps of the method according to any one of claims 8 to 14, controller.

19. In one or more non-transitory computer-readable media storing one or more instructions, The one or more instructions perform operations based on being executed by one or more processors, The above actions are, Comprising all steps of the method according to any one of claims 1 to 7, Computer readable medium.

20. In one or more non-transitory computer-readable media storing one or more instructions, The one or more instructions perform operations based on being executed by one or more processors, The above actions are, Comprising all steps of the method according to any one of claims 8 to 14, Computer readable medium.

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