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WO2025071265A1 - Appareil et procédé permettant de prendre en charge une transmission et une réception d'énergie rf dans un système de communication sans fil - Google Patents

Appareil et procédé permettant de prendre en charge une transmission et une réception d'énergie rf dans un système de communication sans fil Download PDF

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Publication number
WO2025071265A1
WO2025071265A1 PCT/KR2024/014608 KR2024014608W WO2025071265A1 WO 2025071265 A1 WO2025071265 A1 WO 2025071265A1 KR 2024014608 W KR2024014608 W KR 2024014608W WO 2025071265 A1 WO2025071265 A1 WO 2025071265A1
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WIPO (PCT)
Prior art keywords
transmission
signal
link signal
frequency
present disclosure
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English (en)
Korean (ko)
Inventor
김재형
양석철
김선욱
이영대
안준기
황승계
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LG Electronics Inc
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LG Electronics Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/06—Channels characterised by the type of signal the signals being represented by different frequencies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex

Definitions

  • the present disclosure relates to a wireless communication system. Specifically, the present disclosure relates to a device and method for supporting transmission and reception of radio frequency (RF) energy in a wireless communication system.
  • RF radio frequency
  • Wireless communication systems are being widely deployed to provide various types of communication services such as voice and data.
  • wireless communication systems are multiple access systems that can support communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.).
  • multiple access systems include the CDMA (Code Division Multiple Access) system, the FDMA (Frequency Division Multiple Access) system, the TDMA (Time Division Multiple Access) system, the OFDMA (Orthogonal Frequency Division Multiple Access) system, and the SC-FDMA (Single Carrier Frequency Division Multiple Access) system.
  • CDMA Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • TDMA Time Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the present disclosure provides a device and method for supporting transmission and reception of RF energy in a wireless communication system.
  • a method performed by a first device comprising: receiving a multiplexed ES (energizing signal) and a first link signal from a second device; 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 energizing the first device.
  • ES multiplexed ES
  • 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)
  • the ES is related to energizing the first device.
  • a method performed by a second device comprising: transmitting to a first device an energizing signal (ES) and a first link signal that are multiplexed; 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 energizing the first device.
  • ES energizing signal
  • first link signal that are multiplexed
  • second link signal are time-based multiplexed or frequency-based multiplexed
  • the ES is based on a CW (carrier wave)
  • the ES is related to energizing the first device.
  • a first device 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.
  • a second device 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.
  • a control device for controlling a first device in a wireless communication system comprising: 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.
  • a computer-readable medium storing one or more non-transitory 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, is provided.
  • the present disclosure can provide a device and method for supporting transmission and reception of RF energy in a wireless communication system.
  • 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.
  • FIG. 2 is a diagram illustrating an example of a wireless frame structure used in a system applicable to the present disclosure.
  • FIG. 3 is a drawing illustrating an example of a slot structure used in a system applicable to the present disclosure.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 8 is a diagram illustrating an example of an FDM continuous ES transmission scheme in an NR licensed FDD band in a system applicable to the present disclosure.
  • FIG. 9 is a diagram illustrating an example of an FDM discontinuous ES transmission scheme in an NR licensed FDD band in a system applicable to the present disclosure.
  • FIG. 10 is a diagram illustrating an example of an FDM discontinuous ES transmission scheme in an NR licensed FDD band in a system applicable to the present disclosure.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 18 is a diagram illustrating an example of a device-specific ES resource setting method in a system applicable to the present disclosure.
  • FIG. 19 is a diagram illustrating an example of a device-specific ES resource setting method in a system applicable to the present disclosure.
  • FIG. 20 is a diagram illustrating an example of a Device-common ES resource setting method in a system applicable to the present disclosure.
  • FIG. 21 is a diagram illustrating an example of an operation process of a first device in a system applicable to the present disclosure.
  • FIG. 22 is a diagram illustrating an example of an operation process of a second device in a system applicable to the present disclosure.
  • 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.
  • a or B can mean “only A,” “only B,” or “both A and B.” In other words, in various embodiments of the present disclosure, “A or B” can be interpreted as “A and/or B.” For example, in various embodiments of the present disclosure, “A, B or C” can mean “only A,” “only B,” “only C,” or “any combination of A, B and C.”
  • a slash (/) or a comma may mean “and/or”.
  • A/B may mean “A and/or B”.
  • A/B may mean “only A”, “only B”, or “both A and B”.
  • A, B, C may mean “A, B, or C”.
  • “at least one of A and B” can 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” can be interpreted as equivalent to “at least one of A and B.”
  • “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.”
  • control information may be proposed as an example of "control information”.
  • control information when indicated as “control information (PDCCH)", “PDCCH” may be proposed as an example of "control information”.
  • the "control information” of various embodiments of the present disclosure is not limited to "PDCCH", and “PDDCH” may be proposed as an example of "control information”.
  • PDCCH control information
  • PDCCH control information
  • 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. Specifically, FIG. 1 exemplifies physical channels used in a 3GPP system and general signal transmission.
  • Figure 1 illustrates physical channels and general signal transmission used in a 3GPP system.
  • a terminal receives information from a base station through a downlink (DL), and the terminal transmits information to the base station through an uplink (UL).
  • the information transmitted and received by the base station and the terminal includes data and various control information, and various physical channels exist depending on the type/purpose of the information they transmit and receive.
  • a terminal When a terminal is powered on again from a powered-off state or enters a new cell, it performs an initial cell search operation such as synchronizing with the base station (S11). To this end, the terminal receives a PSCH (Primary Synchronization Channel) and an SSCH (Secondary Synchronization Channel) from the base station to synchronize with the base station and obtain information such as a cell ID (cell identity).
  • the terminal can receive a PBCH (Physical Broadcast Channel) from the base station to obtain broadcast information within the cell.
  • the terminal can receive a DL RS (Downlink Reference Signal) during the initial cell search phase to check the downlink channel status.
  • PSCH Primary Synchronization Channel
  • SSCH Secondary Synchronization Channel
  • PBCH Physical Broadcast Channel
  • DL RS Downlink Reference Signal
  • 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).
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Control Channel
  • the terminal can perform a random access procedure to complete connection to the base station (S13 to S16). Specifically, the terminal can transmit a preamble through a PRACH (Physical Random Access Channel) (S13) and receive a RAR (Random Access Response) for the preamble through a PDCCH and a PDSCH corresponding thereto (S14). Thereafter, the terminal can transmit a PUSCH (Physical Uplink Shared Channel) using scheduling information in the RAR (S15) and perform a contention resolution procedure such as a PDCCH and a PDSCH corresponding thereto (S16).
  • PRACH Physical Random Access Channel
  • RAR Random Access Response
  • S15 Physical Uplink Shared Channel
  • 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 need to be transmitted simultaneously.
  • the terminal can aperiodically transmit UCI through PUSCH according to a request/instruction of the network.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the new RAT system uses OFDM transmission scheme or similar transmission scheme.
  • the new RAT system may follow OFDM parameters different from those of LTE.
  • the new RAT system may follow the existing numerology of LTE/LTE-A but have a larger system bandwidth (e.g., 100MHz).
  • a single cell may support multiple numerologies. That is, UEs operating with different numerologies may coexist in a single cell.
  • FIG. 2 is a diagram illustrating an example of the structure of a wireless frame used in a system applicable to the present disclosure.
  • a radio frame has a length of 10 ms and is defined by two 5 ms half-frames (Half-Frames, HF).
  • a half-frame is defined by five 1 ms subframes (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).
  • SCS Subcarrier Spacing
  • Each slot contains 12 or 14 OFDM (A) symbols depending on the cyclic prefix (CP). When normal CP is used, each slot contains 14 symbols. When extended CP is used, each slot contains 12 symbols.
  • a symbol may include an OFDM symbol (or a CP-OFDM symbol), an SC-FDMA symbol (or a DFT-s-OFDM symbol).
  • 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.
  • N slot symb is the number of symbols in a slot.
  • N frame,u slot is the number of slots in a frame.
  • N subframe,u slot is the number of slots in a subframe.
  • 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 change depending on the SCS.
  • NR supports multiple numerologies (or subcarrier spacings (SCS)) to support various 5G services. For example, when the SCS is 15 kHz, it supports wide area in traditional cellular bands, when the SCS is 30 kHz/60 kHz, it supports dense-urban, lower latency, and wider carrier bandwidth, and when the SCS is 60 kHz or higher, it supports bandwidths greater than 24.25 GHz to overcome phase noise.
  • SCS subcarrier spacings
  • 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.
  • FR1 can mean "sub 6GHz range”
  • FR2 can mean “above 6GHz range” and can be called millimeter wave (mmW).
  • mmW millimeter wave
  • FR1 can include a band of 410 MHz to 7125 MHz as shown in Table 4 below. That is, FR1 can include a frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher.
  • the frequency band of 6 GHz (or 5850, 5900, 5925 MHz, etc.) or higher included in FR1 can include an unlicensed band.
  • the unlicensed band can be used for various purposes, for example, it can be used for communication for vehicles (e.g., autonomous driving).
  • OFDM(A) numerology e.g., SCS, CP length, etc.
  • OFDM(A) numerology e.g., SCS, CP length, etc.
  • the (absolute time) section of a time resource e.g., SF, slot, or TTI
  • TU Time Unit
  • FIG. 3 is a drawing illustrating an example of a slot structure used in a system applicable to the present disclosure.
  • a slot contains multiple symbols in the time domain. For example, in the case of a normal CP, one slot contains 7 symbols, but in the case of an extended CP, one slot contains 6 symbols.
  • a carrier contains multiple subcarriers in the frequency domain.
  • An RB Resource Block
  • a BWP Bandwidth Part
  • P consecutive (P)RBs in the frequency domain, and can correspond to one 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 one terminal.
  • Each element in the resource grid is referred to as a Resource Element (RE), and one complex symbol can be mapped to it.
  • RE Resource Element
  • 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.
  • Fig. 4 is an exemplary system, illustrating the slot structure of a frame of an NR system.
  • 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.
  • DL data scheduling information, UL data scheduling information, etc. can be transmitted in the DL control channel
  • ACK/NACK information for DL data, CSI information (modulation and coding scheme information, MIMO transmission-related information, etc.), scheduling request, etc. can be transmitted in the UL control channel.
  • CSI information modulation and coding scheme information, MIMO transmission-related information, etc.
  • scheduling request, etc. can be transmitted in the UL control channel.
  • a time gap for DL-to-UL or UL-to-DL switching may exist between the control region and the data region.
  • DL control / DL data / UL data / UL control may not be configured in a single slot.
  • 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.)
  • Frequency Range 1 Refers to the frequency range below 6 GHz (e.g., 450 MHz to 6000 MHz).
  • Frequency Range 2 Refers to the millimeter wave (mmWave) range of 24 GHz or higher (e.g., 24250 MHz to 52600 MHz).
  • SIB1 for NR devices RMSI (Remaining Minimum System Information). Broadcasts information required for NR terminals to access cells.
  • CORESET#0 CORESET for Type0-PDCCH CSS set for NR devices (set in MIB)
  • 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
  • SIB1-R (additional) SIB1 for reduced capability NR devices. This may be limited to cases where it is generated as a separate TB from SIB1 and transmitted as a separate PDSCH.
  • 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
  • CD-SSB Cell defining SSB
  • Non-cell defining 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.
  • SI-RNTI System Information Radio-Network Temporary Identifier
  • 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.
  • SIB1(-R)-PDSCH PDSCH transmitting SIB1(-R)
  • SIB1(-R)-DCI DCI scheduling SIB1(-R)-PDSCH.
  • 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.
  • RO-N RO(RACH Occasion) for normal UE 4-step RACH and 2-step RACH (if configured)
  • RO-N1 When a separate RO is set for normal UE 2-step RACH, it is distinguished as RO-N1 (4-step) and RO-N2 (2-step).
  • RO-R RO (RACH Occasion) set separately from RO-N for redcap UE 4-step RACH and 2-step RACH (if configured)
  • RO-R1 When a separate RO is set for redcap UE 2-step RACH, it is distinguished as RO-R1 (4-step) and RO-R2 (2-step).
  • EH device A device that operates based on EH. It can include all of Device A/B/C under discussion in 3GPP. In addition, although this disclosure mainly considers RF EH, the EH device does not necessarily need to be RF EH-based.
  • Carrier Wave carrier wave for backscattering modulation
  • It is not limited to a single-tone or continuous wave in terms of meaning. It includes the meaning of a signal/channel defined/configured for a backscatter device to perform backscatter modulation.
  • Tag/ambient IoT device 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.
  • EH device EH device, Ambient IoT device, or Device A/B/C are referred to indiscriminately.
  • ‘()’ can be interpreted as both excluding the content within () and including the content within the parentheses.
  • ‘/’ may mean including all of the contents separated by / (and) or including only some of the separated contents (or).
  • 3GPP SA1 is discussing use cases, scenarios, KPIs, etc. for these IoT devices, and they are captured in 3GPP TR 22.840.
  • 3GPP RAN is studying IoT communication through the following SID objective, and the output of the study is captured in 3GPP TR 38.848.
  • 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 the very-low end IoT applications.
  • the study shall provide clear differentiation, i.e. addressing use cases and scenarios that cannot otherwise be fulfilled based on existing 3GPP LPWA IoT technology e.g. NB-IoT including with reduced peak Tx power.
  • Device categorization based on corresponding characteristics may be discussed during the study, in relation with the relevant use cases.
  • the device's peak power consumption shall be limited by its practical form factor for the intended use cases, and shall consider its energy source.
  • Basestation characteristics e.g. macro/micro/pico cells-based deployments
  • node(s) e.g. basestation, UE, relay, repeater, etc. can communicate with target devices
  • deployment scenario There can be more than one deployment scenario identified for a use case, and a deployment scenario may be common to more than one use case.
  • This study shall target for an IoT segment well below the existing 3GPP IoT technologies, e.g. NB-IoT, eMTC, RedCap, etc. The study shall not aim to replace existing 3GPP LPWA technologies.
  • the IoT device that 3GPP wants to support through study has the main feature of being maintenance-free, that is, being able to be used permanently without battery replacement.
  • the 3GPP SA1 study result document TR 22.840 captures the content that energy can be harvested from RF signals, and that this RF energy harvesting method can have the following advantages.
  • 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/warehouse, manufacturing, smart homes, health monitoring, and environmental monitoring etc.)
  • 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.
  • EH device a device based on RF energy harvesting in a wireless communication system.
  • 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.
  • the EH device can include all of Device A/B/C under consideration in the 3GPP RAN study, and therefore, the present disclosure can be applied to all of Device A/B/C.
  • the EH device is not limited to Device A/B/C or the device type/class under consideration in 3GPP, and can be a comprehensive meaning of a general device that is mainly or auxiliaryly supplied with energy through energy harvesting.
  • Device A No energy storage, no independent signal generation, i.e. backscattering transmission
  • Device B Has energy storage, no independent signal generation, i.e. backscattering transmission. Use of stored energy can include amplification for reflected signals.
  • Device C Has energy storage, has independent signal generation, i.e. active RF component for transmission
  • 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.
  • Intermediate node can be relay, IAB, UE, repeater, etc. which is capable of ambient IoT.
  • Assisting node can be relay, IAB, UE, repeater, etc. which is capable of ambient IoT.
  • 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). Since this method can design an ES optimized from the perspective of ET efficiency, the effect of increasing ET efficiency can be expected. At this time, the 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 target of ES optimization may include 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.
  • (3-2) May include the required guard band(s) for coexistence with NR/LTE/next generation communication system signals/channels
  • (3-3) ES can be transmitted in-band within the NR operating band, or in the guard band, or on a separate band/carrier.
  • (4-1) ES can be transmitted from the same or different (separate) TRP as the signal/channel for communication purposes, and can be transmitted from multiple TRPs to secure coverage.
  • (4-2) It can be transmitted in the form of isotropic or broad beam from a specific TRP. Also, it can be a dedicated TRP/node for ES transmission with isotropic/broad beam.
  • 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.
  • 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.
  • 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.
  • FIG. 5 may be an example for Device C that can operate as FDD or HD-FDD in an FDD band because independent signal generation is possible.
  • the F-gap can be mainly used to eliminate/alleviate interference that the ES gives 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.
  • the F-gap can be set in the following cases.
  • 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.
  • 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 about 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.
  • information about the presence/size/location of the F-gap, etc. can be set/indicated in the form of 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).
  • broadcast signaling e.g., system information including SIB1
  • cell-specific/UE-specific RRC signaling e.g., cell-specific/UE-specific RRC signaling
  • dynamic e.g., MAC CE, DCI
  • FIG. 8 is a diagram illustrating an example of an FDM continuous ES transmission scheme in an NR licensed FDD band in a system applicable to the present disclosure.
  • the cases where ES transmission is required/requested may include the cases where communication is established/instructed/requested between R and T.
  • the ES end time can be set/instructed (by EH device type/class) considering EH requirement(s), ES frequency bandwidth size, etc. defined for the EH device or by EH device type/class.
  • ES can be transmitted periodically (during a specific time interval).
  • the FDM discontinuous ES transmission method can have the following detailed methods.
  • T-Gap1 and T-Gap2 follow the definitions in the TDM ES transmission method below.
  • FIG. 9 is a diagram illustrating an example of an FDM discontinuous ES transmission scheme in an NR licensed FDD band in a system applicable to the present disclosure.
  • 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 power saving of the R/base station and resource recycling.
  • FIG. 10 is a diagram illustrating an example of an FDM discontinuous ES transmission scheme in an NR licensed FDD band in a system applicable to the present disclosure.
  • 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 and resource recycling of the R/base station.
  • 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.
  • 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.
  • Such exceptional cases may include:
  • Information/parameters required to support the FDM ES transmission method including the presence/size/location of the 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.
  • information about the presence/size/location of the F-gap, etc. can be set/instructed in a manner of 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 corresponding communication system (LTE, NR, or next-generation communication system), for example, for rate-matching purposes.
  • broadcast signaling e.g., system information including SIB1
  • cell-specific/UE-specific RRC signaling e.g., cell-specific/UE-specific RRC signaling
  • dynamic e.g., MAC CE, DCI
  • 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.
  • 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.
  • 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.
  • FIG. 12 may be an example for Device C that can operate in FDD or HD-FDD in an FDD band because independent signal generation is possible.
  • 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.
  • EH device may not expect/assume ES transmission during the requested or configured/instructed T-Gap1.
  • the required T-Gap1 value may be different depending on the Ambient IoT device type/class.
  • T may need to report the required T-Gap1 information to the R/base station.
  • the R/base station may need to collect the required T-Gap1 information from T (during the initial connection process or after the connection).
  • the required T-Gap1 information can be replaced with the device type/class information by the required T-Gap1 value that is fixed for each device type/class.
  • the TDM ES transmission method can be applied without a time gap.
  • 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/specified as a separate parameter from T-Gap2, or (if there is no separate T-Gap4 setting) applied/replaced by the T-Gap2 value.
  • 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.
  • 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.
  • the T-Gap2 value may be determined/configured/indicated to include the link direction switching (e.g., DL-to-UL switching) time.
  • 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 be expected to receive ES or EH during T-Gap2.
  • 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.
  • the required T-Gap2 value may be different depending on the Ambient IoT device type/class.
  • T may need to report the required T-Gap2 information to the R/base station.
  • the R/base station may need to collect the required T-Gap2 information from T (during the initial connection process or after the connection).
  • the required T-Gap2 information can be replaced with the device type/class information by the fixed required T-Gap2 value for each device type/class.
  • T-Gap2 There may be cases where setting T-Gap2 is unnecessary for the purposes mentioned above. For example, there may be cases where it is difficult to set it to a single value due to factors such as different T-Gap2 requirements for each EH device (type/class), or where it is difficult for the R/base station to recycle resources during T-Gap2.
  • the TDM ES transmission method can be applied without a time gap.
  • the T-Gap3 value can be determined/set/indicated to include the RF switching time.
  • the specific value may be determined by the RF/baseband bandwidth of the Ambient IoT device.
  • T-Gap3 may be set/indicated as a separate parameter from T-Gap1, or (if there is no separate T-Gap3 setting) may be applied/replaced with the T-Gap1 value.
  • 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.
  • 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 may be 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).
  • 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.
  • 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.
  • 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.
  • broadcast signaling e.g., system information including SIB1
  • cell-specific/UE-specific RRC signaling e.g., cell-specific/UE-specific RRC signaling
  • dynamic e.g., MAC CE, DCI
  • This method may be (additionally) applied to the above FDM/TDM transmission methods, and the effect of saving R/base station ES transmission resources can be expected.
  • a TD window for ES transmission or transmission omission 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), and for this, the EH device can report its EH device type/class information, EH requirement-related information, or directly supported/preferred TD window size, etc. to the R/base station.
  • ES transmission resources can be set/allocated/instructed periodically (during a specific time interval).
  • the R/base station can set/allocate/instruct a cycle (PES) and an ES transmission interval (DES) for each cycle, or an ES transmission pattern (within the cycle and the cycle).
  • PES periodic ES transmission cycle setting
  • DES ES transmission interval
  • T can periodically receive ES and perform EH operation based on this ES cycle setting value ⁇ PES, DES ⁇ .
  • the R/base station can operate by setting/allocating/instructing one or more of these ES cycles.
  • each ES cycle can have a different ⁇ PEH, DEH ⁇ value, which can be for the purpose of supporting different device types/classes and/or various traffic. Traffic can be defined, for example, by a cycle, amount, pattern, etc. of data (to be collected).
  • a device-specific ES resource setting/allocation method and a device-common ES resource setting/allocation method are proposed.
  • the ES resource setting/allocation method and/or the ES transmission method can be applied to all EH devices, e.g., Devices A/B/C, or can be applied only to an EH device that supports operations based on such setting/allocation or is capable of independent signal generation, e.g., Device C.
  • FIG. 18 is a diagram illustrating an example of a device-specific ES resource setting method in a system applicable to the present disclosure.
  • FIG. 19 is a diagram illustrating an example of a device-specific ES resource setting method in a system applicable to the present disclosure.
  • DL/UL resources for data communication and separate ES resources can be set/instructed and operated for each device.
  • it is device-specific in setting, it can include a case where the R/base station operates shared/common ES resources between T/Ambient IoT devices through the same setting.
  • DL/UL resources for Ambient IoT data communication can be operated by setting DL and UL separately (example of Fig. 18) or by setting only one of DL and UL (example of Fig. 19).
  • DL and UL resources can be set and operated separately. Therefore, in this case, if separate ES transmission resources are also considered, ⁇ ES, DL, UL ⁇ resources can be set and operated separately for each device.
  • DL and UL resources can be operated by setting only one of DL and UL, or in the form of DL/UL common resources, without setting them separately.
  • CW ⁇ resources can be set and operated separately for each device.
  • the R/base station configures/indicates common/shared resources for ES transmission, and multiple EH devices can perform EH operations through ES reception via the configured/indicated common resources.
  • the device-common configuration method may include a cell-specific configuration method and a group-specific configuration method.
  • the R/base station can configure/indicate ES transmission resources in the cell-specific configuration method so that all EH devices in the cell can perform EH via the same configured/indicated ES transmission resources.
  • specific time/freq resources can be allocated and used for ES transmission in a cell supporting EH devices.
  • 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.
  • EH devices can be allocated 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 the device group-specific ES resource configuration does not include a device group ID, the ES resource may be configured/instructed/allowed for all EH devices.
  • 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.
  • the device-common configuration may be cell-/TRP-common, not cell-/TRP-specific. That is, instead of configuring/indicating the same time/freq resources for each cell, it may include cell/TRP ID information(s) that transmit ES using the corresponding resources together with the common time/freq resource configuration in the device-common ES configuration.
  • the device group-specific ES resource configuration method can be used for the purpose of configuring/instructing/allowing 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 for the purpose of supporting Ambient IoT device types/classes with different EH requirements in the same cell.
  • group-specific ES configuration 1 can be separately set 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 set and operated for a device group (type/class) with low EH requirement (i.e., requiring a small amount of EH).
  • N device group-specific ES resource configurations can be operated by considering N different device types/classes requiring EH requirements.
  • 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.
  • R/base station can set/instruct/allow device group-to-ES resource mapping considering device type/class-specific characteristics in terms of these EH requirements.
  • configuration 1 can include group 1 consisting of Device Cs
  • configuration 2 can include group 2 consisting of Device A/B.
  • the same ES transmission resources can be set/indicated/allowed in a cell-specific setting manner, but ES time/freq resources used for EH can be set/indicated/allowed differently for each device type/class.
  • EH can be configured/instructed/allowed to be performed using all of the cell-specific ES configuration resources, and for device types/classes with low EH requirement, EH can be configured/instructed/allowed to be performed using only a portion of them.
  • 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.
  • 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 can be, for example, the most advanced or the device type/class with the highest EH requirement among the device types/classes within the cell or from which information is to be collected.
  • the cell-specific ES transmission resources can be set based on Device C (of EH requirement).
  • FIG. 20 is a diagram illustrating an example of a Device-common ES resource setting method in a system applicable to the present disclosure.
  • the Hybrid ES resource setting method can be a method of operating by using both device-specific ES resource settings and device-common ES resource settings at the same time.
  • the Ambient IoT device first checks whether the device-specific ES setting exists, and if the device-specific ES setting exists, it performs EH through the ES resource set/instructed/allowed in the setting, and if not, it can perform the EH operation through the ES resource set/instructed/allowed in the device-common ES setting.
  • 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.
  • the device-specific ES configuration resource can mean an additional EH resource that the R/base station additionally sets in addition to the device-common ES configuration resources in consideration of the EH requirement of the EH device or to shorten the EH time.
  • the device-common ES configuration resource can be based on the lightest or the device type/class with the lowest EH requirement (e.g., Device A).
  • 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.
  • Waveform parameters e.g., different number of tones
  • Waveform parameters can be set individually/independently.
  • the minimum resources e.g., single-tone
  • additional resources e.g., additional tone(s)
  • the device can perform EH operation through multi-tone ES through the device-common and device-specific 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.
  • 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 is also expected to have 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 is a device that requires additional EH requirements.
  • ES transmission power 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.
  • 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.
  • 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.
  • 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 the configuration/allocation information to support ES transmission methods for EH device support 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.
  • broadcast signaling e.g., system information including SIB1
  • cell-specific/UE-specific RRC signaling e.g., cell-specific/UE-specific RRC signaling
  • dynamic e.g., MAC CE, DCI
  • all or part of the parameters (e.g., frequency location/bandwidth and transmission section information) of the ES resource configuration/allocation information and/or the configuration/allocation information for supporting ES transmission methods for EH device support 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.
  • FIG. 21 is a diagram illustrating an example of an operation process of a first device in a system applicable to the present disclosure.
  • the first device receives a multiplexed energizing signal (ES) and a first link signal from the second device.
  • ES multiplexed energizing signal
  • the first device transmits 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 ES is based on CW (carrier wave), and the ES is related to energy supply to the first device.
  • the waveform of the ES may be based on a single tone or multi tones.
  • 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.
  • the embodiment of FIG. 21 may further include a step of receiving setting information related to the ES from the second device.
  • the ES can be received based on the configuration information.
  • the configuration information can be related to one or more of a transmission period of the ES, a transmission pattern, the time gap, and the frequency gap.
  • the first link signal and the second link signal can be frequency-based multiplexed using the ES and the frequency gap.
  • the time gap may include one or more of a first time gap and a second time gap.
  • the ES may be received prior to reception of the first link signal by the first time gap.
  • the ES may be received prior to transmission of the second link signal by the second time gap after reception of the first link signal.
  • 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.
  • the broadcast signal may be related to avoidance of interference or collision with other devices with respect to the resource of the ES.
  • a first device in a wireless communication system.
  • the first device includes a transceiver and at least one processor, and the at least one processor can be configured to perform a method of operating the first device according to FIG. 21.
  • an apparatus for controlling a first device in a wireless communication system 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 being executed by the at least one processor.
  • one or more non-transitory computer readable media storing one or more instructions.
  • the one or more instructions when executed by one or more processors, perform operations, the operations may include a method of operating a first device according to FIG. 21.
  • FIG. 22 is a diagram illustrating an example of an operation process of a second device in a system applicable to the present disclosure.
  • the second device transmits a multiplexed energizing signal (ES) and a first link signal to the first device.
  • ES multiplexed energizing signal
  • the second device receives 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 ES is based on CW (carrier wave), and the ES is related to energy supply to the first device.
  • the waveform of the ES may be based on a single tone or multi tones.
  • the embodiment of FIG. 22 may further include a step of transmitting setting information related to the ES to the first device.
  • the ES may be transmitted based on the configuration information.
  • the configuration information may be related to one or more of a transmission period of the ES, a transmission pattern, the time gap, and the frequency gap.
  • the first link signal and the second link signal can be frequency-based multiplexed using the ES and the frequency gap.
  • the time gap may include one or more of a first time gap and a second time gap.
  • the ES may be transmitted prior to transmission of the first link signal at the first time gap.
  • the ES may be transmitted prior to reception of the second link signal after transmission of the first link signal at the second time gap.
  • the embodiment of FIG. 22 may further include a step of transmitting a broadcast signal related to a resource of the ES.
  • the broadcast signal may be related to avoidance of interference or collision with other devices with respect to the resource of the ES.
  • a second device in a wireless communication system.
  • the second device includes a transceiver and at least one processor, and the at least one processor can be configured to perform a method of operating the second device according to FIG. 22.
  • an apparatus for controlling a second device in a wireless communication system 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 being executed by the at least one processor.
  • one or more non-transitory computer readable media storing one or more instructions.
  • the one or more instructions when executed by one or more processors, perform operations, the operations including a method of operating a second device according to FIG. 22.
  • 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.
  • the first device (1600) may include a processor (1610), an antenna unit (1620), a transceiver (1630), and a memory (1640).
  • the processor (1610) performs baseband-related signal processing and may include an upper layer processing unit (1611) and a physical layer processing unit (1615).
  • the upper 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.
  • the physical layer processing unit (1615) may perform uplink reception signal processing, downlink transmission signal processing, etc.
  • the physical layer processing unit (1615) may perform downlink reception signal processing, uplink transmission signal processing, sidelink transmission signal processing, etc.
  • the processor (1610) may also control the overall operation of the first device (1600).
  • 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.
  • the processor (1610) of the first device (1600) may be configured to implement operations of the base station in base station-to-terminal communication (or operations of the first terminal device in terminal-to-terminal communication) in the embodiments described in the present disclosure.
  • the second device (1650) may include a processor (1660), an antenna unit (1670), a transceiver (1680), and a memory (1690).
  • 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.
  • the physical layer processing unit (1665) may perform downlink reception signal processing, uplink transmission signal processing, etc.
  • 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.
  • the processor (1660) may also control the overall operation of the second device (1660).
  • the antenna unit (1670) may include one or more physical antennas, and when it includes multiple antennas, it 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.
  • 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.
  • 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.
  • 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.
  • the claims described in the various embodiments of the present disclosure may be combined in various ways.
  • 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.
  • the technical features of the method claims and the technical features of the device 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 and the technical features of the device claims of the various embodiments of the present disclosure may be combined and implemented as a method.

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Abstract

Selon divers modes de réalisation de la présente divulgation, un procédé réalisé par un premier dispositif comprend les étapes consistant : à recevoir un signal d'excitation multiplexé (ES) et un premier signal de liaison en provenance d'un second dispositif ; et à transmettre un second signal de liaison au second dispositif, l'ES, le premier signal de liaison et le second signal de liaison étant multiplexés sur la base du temps ou multiplexés sur la base de la fréquence, l'ES étant basé sur une onde porteuse (CW) et l'ES étant associée à l'alimentation en énergie du premier dispositif.
PCT/KR2024/014608 2023-09-26 2024-09-26 Appareil et procédé permettant de prendre en charge une transmission et une réception d'énergie rf dans un système de communication sans fil Pending WO2025071265A1 (fr)

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LEI HUANG (OPPO): "Ambient Power Enabled IoT for Wi-Fi", IEEE DRAFT; 11-22-0645-02-0WNG-AMBIENT-POWER-ENABLED-IOT-FOR-WI-FI, IEEE-SA MENTOR, PISCATAWAY, NJ USA, vol. 802.11 WNG, no. 2, 16 May 2022 (2022-05-16), Piscataway, NJ USA, pages 1 - 22, XP068190672 *
LG ELECTRONICS: "Proposals on Ambient IoT in Rel-19", 3GPP DRAFT; RP-232195, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. TSG RAN, no. Bangalore, India; 20230911 - 20230915, 4 September 2023 (2023-09-04), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052515452 *

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