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WO2025211917A1 - Procédé et dispositif d'émission/réception de signal dans un système de communication sans fil - Google Patents

Procédé et dispositif d'émission/réception de signal dans un système de communication sans fil

Info

Publication number
WO2025211917A1
WO2025211917A1 PCT/KR2025/095168 KR2025095168W WO2025211917A1 WO 2025211917 A1 WO2025211917 A1 WO 2025211917A1 KR 2025095168 W KR2025095168 W KR 2025095168W WO 2025211917 A1 WO2025211917 A1 WO 2025211917A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
resource
wus
scs
terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/KR2025/095168
Other languages
English (en)
Korean (ko)
Inventor
최승환
양석철
김재형
김선욱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of WO2025211917A1 publication Critical patent/WO2025211917A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0457—Variable allocation of band or rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • Wireless communication systems are widely deployed to provide various types of communication services, such as voice and data.
  • wireless communication systems are multiple access systems that support communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power).
  • 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).
  • 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 invention provides a method and device for transmitting and receiving signals in a wireless communication system.
  • a method performed by a terminal in a wireless communication system comprises: a step of setting a first resource for a first signal associated with a first receiver of the terminal; a step of setting a second resource for a second signal associated with a second receiver of the terminal; a step of omitting reception of the first signal in the first resource and receiving the second signal in the second resource based on (i) that the first resource and the second resource overlap and (ii) that a first SCS (SubCarrier Spacing) for the first signal and a second SCS for the second signal are different from each other; and
  • a first SCS SubCarrier Spacing
  • a device for performing the above method comprising a terminal, a processor, and a storage medium.
  • a method performed by a base station in a wireless communication system comprising: setting a first resource for a first signal associated with a first receiver of a terminal; setting a second resource for a second signal associated with a second receiver of the terminal; omitting transmission of the first signal on the first resource and transmitting the second signal on the second resource based on (i) that the first resource and the second resource overlap and (ii) that a first SCS (SubCarrier Spacing) for the first signal and a second SCS for the second signal are different from each other; and transmitting the first signal on the first resource and the second signal on the second resource based on (i) that the first resource and the second resource overlap and (ii) that the first SCS and the second SCS are the same; wherein the first signal is a Low Power-Wake Up Signal (LP-WUS) or a Low Power-Synchronization Signal (LP-SS).
  • LP-WUS Low Power-Wake Up Signal
  • LP-SS Low Power-Synchr
  • a device for performing the method comprising a base station, a processor, and a storage medium.
  • the above devices may include at least a terminal, a network, and an autonomous vehicle capable of communicating with other autonomous vehicles other than the above devices.
  • Figure 1 illustrates the structure of a radio frame.
  • Figure 2 illustrates a resource grid of slots.
  • Figures 3 to 6 are drawings for explaining a signal transmission and reception method according to an embodiment of the present invention.
  • CDMA can be implemented using wireless technologies such as UTRA (Universal Terrestrial Radio Access) or CDMA2000.
  • TDMA can be implemented using wireless technologies such as GSM (Global System for Mobile communications)/GPRS (General Packet Radio Service)/EDGE (Enhanced Data Rates for GSM Evolution).
  • OFDMA can be implemented using wireless technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (Evolved UTRA).
  • UTRA is a part of UMTS (Universal Mobile Telecommunications System).
  • RRC Radio Resource Control
  • Figure 1 illustrates the structure of a radio frame used in NR.
  • uplink (UL) and downlink (DL) transmissions are structured as frames.
  • a radio frame is 10ms long and is defined as two 5ms half-frames (HF). Each half-frame is defined as five 1ms 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.
  • the symbols can include OFDM symbols (or CP-OFDM symbols), SC-FDMA symbols (or DFT-s-OFDM symbols).
  • 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.
  • 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.
  • OFDM(A) numerology e.g., SCS, CP length, etc.
  • OFDM(A) numerology may be set differently between multiple cells that are merged into a single user equipment (UE).
  • the (absolute time) interval of a time resource e.g., SF, slot, or TTI
  • TU Time Unit
  • NR supports multiple Orthogonal Frequency Division Multiplexing (OFDM) numerologies (e.g., subcarrier spacing, SCS) to support various 5G services.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SCS subcarrier spacing
  • a 15 kHz SCS supports wide areas in traditional cellular bands, while a 30 kHz/60 kHz SCS can support dense urban areas, lower latency, and wider carrier bandwidth.
  • FR1/FR2 frequency ranges
  • FR1/FR2 can be configured as shown in Table 3 below.
  • FR2 can also refer to millimeter wave (mmW).
  • mmW millimeter wave
  • Figure 2 illustrates the slot structure of an NR frame.
  • 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/signals exist depending on the type/purpose of the information they transmit and receive.
  • a physical channel corresponds to a set of resource elements (REs) that carry information derived from a higher layer.
  • a physical signal corresponds to a set of resource elements (REs) used by the physical layer (PHY), but does not carry information derived from a higher layer.
  • the higher layers include the Medium Access Control (MAC) layer, the Radio Link Control (RLC) layer, the Packet Data Convergence Protocol (PDCP) layer, and the Radio Resource Control (RRC) layer.
  • MAC Medium Access Control
  • RLC Radio Link Control
  • PDCP Packet Data Convergence Protocol
  • RRC Radio Resource Control
  • DL physical channels include Physical Broadcast Channel (PBCH), Physical Downlink Shared Channel (PDSCH), and Physical Downlink Control Channel (PDCCH).
  • DL physical signals include DL Reference Signal (RS), Primary Synchronization Signal (PSS), and Secondary Synchronization Signal (SSS).
  • DL RS includes Demodulation RS (DM-RS), Phase-tracking RS (PT-RS), and Channel-state information RS (CSI-RS).
  • UL physical channels include Physical Random Access Channel (PRACH), Physical Uplink Shared Channel (PUSCH), and Physical Uplink Control Channel (PUCCH).
  • UL physical signals include UL RS.
  • UL RS includes DM-RS, PT-RS, and Sounding RS (SRS).
  • the base station may be, for example, a gNodeB.
  • LP-WUS Low Power Wake-Up Signal
  • LP-SS Low Power-Synchronization Signal
  • LP-WUS low power wake-up signal
  • LP-WUR low power wake-up receiver or low power wake-up radio
  • MC-OOK Multi-carrier On-Off Keying
  • MC-FSK Multi-carrier Frequency Shift Keying
  • Figures 3 and 4 illustrate options for the LP-WUS waveform generation method.
  • Figures 3 and 4 relate to MC-ASK (amplitude shift keying) waveform generation.
  • K is the iFFT (inverse fast Fourier transform) size of CP-OFDMA (Cyclic Prefix-Orthogonal Frequency Division Multiplexing Access)
  • N is the number of subcarriers used in LP-WUS, including potential guard bands.
  • OOK-1 and OOK-4 there are OOK-2 and OOK-3 as possible options.
  • OOK-1 and/or OOK-4" may be simply written as "OOK-1/4".
  • OOK-1 For OOK-1, one OOK symbol can be matched to one OFDM symbol interval, and for OOK-4, M OOK symbols can be mapped to one OFDM symbol interval. Therefore, OOK-1 can transmit 1 bit per OFDM symbol, and OOK-4 can transmit M bits per OFDM symbol. If MC (Manchester encoding) is additionally used for LP-WUS, twice as many OFDM symbols may be required to transmit the same bit. Meanwhile, a terminal (including LP-WUR) that receives LP-WUS can perform an MR wake-up operation. For this purpose, an ID (identifier) that can distinguish each terminal or a (sub)group of terminals can be included in the LP-WUS signal.
  • ID identifier
  • the UE ID can be (for example) a 5G-S-TMSI value or a value reduced by modulo operation, etc. This value can be approximately 48 bits depending on the ID used. Accordingly, a significant number of OFDM symbols may be used to transmit a UE ID via OOK-1/4. For example, assuming the use of MC to transmit a 48-bit UE ID, 96 OFDM symbols are required for OOK-1.
  • the message part of LP-WUS if a preamble part to assist in receiving the message part is transmitted together, the number of OFDM symbols required may increase.
  • the preamble part can convey information necessary for LR to detect/decode the message part.
  • Fig. 5 shows an example of LP-WUS transmission including a preamble part and a message part.
  • an LP-WUS signal transmitted to a specific terminal occupies a specific (frequency/time) channel for a certain period of time, it may result in inefficient use of resources for both the network and the terminal. From the perspective of receiving the LP-WUS signal, it may be vulnerable to interference. Furthermore, if accurate time synchronization is not secured, LP-WUR may have to attempt monitoring for a period of time longer than the actual length of the LP-WUS signal. When the LP-WUS signal is composed of a preamble part and a message part, an effective signal configuration and setting method is required.
  • the LP-WUS signal can use an overlaid sequence together with the OOK waveform.
  • the overlaid sequence can affect the LP-WUS transmission time and/or the frequency resources occupied by the LP-WUS. Additionally, if some information is transmitted through the overlaid sequence, this can be a way to expand the utilization of the LP-WUS signal. However, not all LP-WUS can detect/decode the overlaid sequence. If the overlaid sequence modulates each subcarrier in the frequency domain, only LP-WUS that have FFT (Fast Fourier Transform) and/or sequence correlation capability in the frequency domain can receive the overlaid sequence.
  • FFT Fast Fourier Transform
  • a separate LP-SS (low power synchronization signal) may be defined and transmitted to synchronize the time/frequency required for receiving the LP-WUR transmitted from the LP-WUR.
  • the LP-SS may be a signal/waveform generated according to an OOK or FSK waveform generation method (similar to the LP-WUS), and an overlay sequence may be applied.
  • the LP-SS may be a signal transmitted periodically or aperiodically. Based on the LP-SS, the LP-WUR may measure the power of the received signal, etc., to offload or relax the RRM measurement of the MR.
  • the LP-WUS signal (transmitted by the base station) can be composed of a preamble part and a message part.
  • the preamble part can include information necessary for receiving the message part transmitted subsequently (e.g., data rate, modulation, encoding method of the message part, etc.).
  • the preamble part can include a known sequence/signal without conveying any specific information.
  • a separate known sequence/signal can be transmitted together before or after the preamble part.
  • the message part can carry identification information (for a specific terminal or a (sub)group of terminals), or can simply transmit a wake-up indication for multiple terminals.
  • cell-related information emergency-related information such as ETWS (Earthquake and Tsunami Warning System)/CMAS (Commercial Mobile Alert System), tracking area, RAN (radio access network) area, SI (system information) change instructions, or system-related information (for a terminal) or paging-related information
  • ETWS Earthquake and Tsunami Warning System
  • CMAS Common Mobile Alert System
  • SI system information
  • system-related information for a terminal
  • paging-related information may be transmitted.
  • a CRC Cyclic Redundancy Check
  • the CRC may be generated based on the preamble part and/or the message part.
  • the CRC may not be added.
  • the occasion can mean a TO (transmission occasion) when a base station transmits a signal or a MO (monitoring occasion) when a receiver (such as an LP-WUR) monitors a signal, depending on the context.
  • TO means an opportunity for a signal to be transmitted, the signal may not be transmitted at that location (depending on the configuration or the needs of the base station).
  • MO means an opportunity to monitor a signal, so the receiver may not monitor the signal at that location (depending on the configuration or the needs/circumstances of the base station/terminal).
  • MO means an opportunity to monitor a signal, so the receiver may not monitor the signal at that location (depending on the configuration or the needs/circumstances of the base station/terminal).
  • MO for the convenience of writing, even if it is simply expressed as MO or TO, it can represent MO, TO, or MO and TO depending on the proposal method and context.
  • an LP-WUS opportunity may refer to an opportunity at which the preamble part and/or message part of an LP-WUS may be transmitted.
  • setting an LP-SS/LP-WUS opportunity may be interpreted to mean setting one or more of the LP-SS/LP-WUS period, starting time, ending time, duration, offset within the period, and frequency at which the corresponding signal is transmitted.
  • the preamble part of LP-WUS is described as being intended to convey configuration information for transmission of subsequent message parts, or as including such information transmission part and a known sequence/signal.
  • the preamble or preamble part in the proposed method described below may be replaced with LP-SS.
  • the symbols ' ⁇ ', ' ⁇ ', and ' ⁇ ' listed at the beginning of each paragraph can indicate vertical/horizontal relationships between descriptions within each paragraph.
  • ' ⁇ ', ' ⁇ ', and ' ⁇ ' can indicate upper categories in that order.
  • ' ⁇ ' listed after ' ⁇ ' can be a supplementary explanation of ' ⁇ '.
  • ' ⁇ ' listed after ' ⁇ ' can be a supplementary explanation of ' ⁇ '.
  • A/B can mean “A and/or B”.
  • A, B can mean “A and/or B”.
  • A/B/C can mean "at least one of A, B, and/or C”.
  • A, B, C can mean “at least one of A, B, and/or C”.
  • an NR signal generated with 15 kHz SCS is transmitted in opportunity #1, and an NR signal generated with 120 kHz is transmitted in opportunity #2, and LP-WUS/LP-SS can be transmitted in both of the above two opportunities.
  • LP-WUS/LP-SS When LP-WUS/LP-SS is generated with 15kHz or 30kHz SCS and is set to be transmitted at a specific cycle, if the SCS of CP-OFDM transmitted simultaneously in the opportunity of the LP-WUS/LP-SS is 15kHz (or 30kHz), the base station transmits the LP-WUS/LP-SS generated with 15kHz (or 30kHz) SCS, and if not, the base station can skip the transmission of the LP-WUS/LP-SS in the opportunity. For example, if the SCS of CP-OFDM is 120kHz, the base station can skip the transmission of the LP-WUS/LP-SS in the opportunity.
  • a periodic LP-WUS/LP-SS is generated with a 15kHz SCS and is set to be transmitted at a specific period
  • the base station transmits the periodic LP-WUS/LP-SS, and if not (for example, if a 30kHz NR signal is transmitted), the base station can skip the transmission of the periodic LP-WUS/LP-SS generated with a 15kHz SCS at the opportunity and transmit the aperiodic LP-WUS/LP-SS generated with a 30kHz SCS.
  • a periodic LP-WUS/LP-SS is generated with a 15kHz or 30kHz SCS and is set to be transmitted at a specific period
  • the base station transmits the periodic LP-WUS/LP-SS generated with a 15kHz (or 30kHz) SCS, and if not (for example, if an NR signal of a 120kHz SCS is transmitted), the base station can skip the transmission of the periodic LP-WUS/LP-SS generated with a 15kHz (or 30kHz) SCS at the opportunity and transmit the aperiodic LP-WUS/LP-SS generated with a different SCS (for example, 120kHz).
  • the terminal may not expect to transmit the LP-WUS/LP-SS at that opportunity.
  • the transmission opportunity may be a specific (periodic) slot(s), symbol(s) and/or a specific frequency (e.g., RB, RE).
  • LP-WUS/LP-SS When LP-WUS/LP-SS is generated with 15kHz SCS and is set to be transmitted at a specific cycle, if the SCS of CP-OFDM that must be simultaneously received in the corresponding LP-WUS/LP-SS reception opportunity is 15kHz, the terminal receives/monitors the LP-WUS/LP-SS, and if not, the terminal can skip receiving/monitoring the LP-WUS/LP-SS in the corresponding opportunity. For example, if the SCS of CP-OFDM is an SCS greater than 15kHz SCS (e.g., 30kHz), the terminal can skip receiving/monitoring the LP-WUS/LP-SS in the corresponding opportunity.
  • 15kHz SCS e.g. 30kHz
  • LP-WUS/LP-SS When LP-WUS/LP-SS is generated with 15kHz or 30kHz SCS and is set to be transmitted at a specific cycle, if the SCS of CP-OFDM that must be simultaneously received in the corresponding LP-WUS/LP-SS reception opportunity is 15kHz (or 30kHz), the terminal receives/monitors the LP-WUS/LP-SS generated with 15kHz (or 30kHz) SCS, and if not, the terminal can skip receiving/monitoring the LP-WUS/LP-SS in the corresponding opportunity. For example, if the SCS of CP-OFDM is 120kHz, the terminal can skip receiving/monitoring the LP-WUS/LP-SS in the corresponding opportunity.
  • the terminal may not expect transmission of the periodic LP-WUS/LP-SS generated with SCS#1 at the opportunity, and may expect transmission of the aperiodic LP-WUS/LP-SS generated with SCS#2 instead.
  • the transmission opportunity may be a specific (periodic) slot(s), symbol(s) and/or a specific frequency (e.g., RB, RE).
  • the aperiodic LP-WUS/LP-SS may be received in front of the LP-WUS/LP-SS in the form of a preamble or may be received through separate time/frequency resources.
  • LP-WUS/LP-SS When LP-WUS/LP-SS is generated with 15kHz SCS and is set to be received at a specific period, if the SCS of CP-OFDM that must be simultaneously received at the opportunity of the LP-WUS/LP-SS is 15kHz, the terminal receives/monitors the periodic LP-WUS/LP-SS, and if not (for example, if a NR signal of 30kHz is transmitted), the terminal skips receiving/monitoring the periodic LP-WUS/LP-SS generated with 15kHz at the opportunity, and can receive/monitor the aperiodic LP-WUS/LP-SS generated with 30kHz SCS.
  • the frequency resources (dedicated frequency resources or bandwidth parts) through which LP-WUS/LP-SS are transmitted can be configured for each cell (or each terminal).
  • the relationship between the frequency resources and the (active) BWP of the MR can be defined.
  • LDFR dedicated frequency resources for LP-WUS/LP-SS
  • LDFR can refer to the frequency resources.
  • the base station transmits LP-WUS/LP-SS through the LDFR; otherwise, the base station may not transmit LP-WUS/LP-SS.
  • the above specific BWP may be the active BWP of the terminal, the default BWP, or the initial BWP.
  • the above specific BWP may be a frequency resource through which SSB is transmitted or a frequency resource through which CORESET#0 is transmitted.
  • the frequency range in which LP-WUS/LP-SS is transmitted may include at least the overlapped frequency range.
  • the generated SCS of LP-WUS/LP-SS may be the same as the SCS set in the overlapping BWP.
  • the transmission setting value of the corresponding LP-WUS/LP-SS can follow the setting value of the overlapping BWP.
  • the base station can establish an association or linkage relationship between a specific BWP of LDFR and MR.
  • the base station can set the LDFR ID to be the same as the BWP ID of the associated/connected MR.
  • the SCS of LP-WUS/LP-SS may be equal to the value of the associated/connected MR BWP.
  • the above association/connection relationship can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • the base station can establish an association or connection relationship between one LDFR and N MR BWPs.
  • the above N BWP(s) may include at least one of the terminal's active BWP, basic BWP, initial BWP, frequency resource through which SSB is transmitted, and frequency resource through which CORESET#0 is transmitted.
  • the SCS of LP-WUS/LP-SS transmitted through the above LDFR can follow the SCS of the active BWP or the initial BWP among the N BWPs.
  • the SCS of LP-WUS/LP-SS transmitted through the above LDFR can follow the SCS value set in the BWP that overlaps with the LDFR in the frequency domain among the N BWPs.
  • the above association/connection relationship can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • the base station can establish an association or connection relationship between N LDFRs and one specific MR BWP.
  • the above specific BWP may include at least one of the terminal's active BWP, basic BWP, initial BWP, frequency resource through which SSB is transmitted, and frequency resource through which CORESET#0 is transmitted.
  • the base station can set multiple LDFR IDs to be identical to the BWP ID of the associated/connected MR.
  • the SCS of LP-WUS/LP-SS transmitted through the above LDFR can follow the SCS of the associated/connected BWP.
  • the frequency resources of LP-WUS/LP-SS transmitted through the above LDFR may be the frequency resources of LDFR overlapping with the associated/connected BWP.
  • the previous N LDFRs can be identically associated/connected to the active BWP after switching.
  • the above N can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • the above association/connection relationship can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • the terminal may receive/monitor LP-WUS/LP-SS through the LDFR; otherwise, the terminal may not receive/monitor LP-WUS/LP-SS.
  • the above specific BWP may be the active BWP of the terminal, the default BWP, or the initial BWP.
  • the frequency range where LP-WUS/LP-SS is received/monitored may include at least the overlapped frequency range.
  • the generated SCS of LP-WUS/LP-SS can be the same as the SCS set in the overlapping BWP. That is, the ON or OFF symbol duration of the OOK symbol can be determined from the corresponding SCS.
  • the setting value of the corresponding LP-WUS/LP-SS can follow the setting value of the overlapping BWP.
  • the terminal can establish an association/connection relationship between LDFR and a specific BWP of MR.
  • the terminal may set the LDFR ID to be the same as or assume the same as the BWP ID of the associated/connected MR.
  • the setting values including SCS of LP-WUS/LP-SS transmitted to LDFR can be determined based on the settings of the associated/connected MR BWP.
  • the SCS of LP-WUS/LP-SS can be equal to the value of the associated/connected MR BWP
  • the above association/connection relationship can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • a terminal can establish an association or connection relationship between one LDFR and N MR BWPs.
  • the above specific BWP(s) may include at least one of the terminal's active BWP, basic BWP, initial BWP, frequency resource where SSB is received, and frequency resource where CORESET#0 is received.
  • the SCS of the LP-WUS/LP-SS received through the above LDFR can be determined as the SCS of the active BWP or the initial BWP among the N BWPs.
  • the SCS of the LP-WUS/LP-SS received through the above LDFR can be determined by the SCS set in the BWP that overlaps with the LDFR in the frequency domain among the N BWPs.
  • the above specific BWP(s) may be cases where the same SCS is set.
  • the above N can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • the above association/connection relationship can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • the above specific BWP may include at least one of the terminal's active BWP, basic BWP, initial BWP, frequency resource where SSB is received, and frequency resource where CORESET#0 is received.
  • the terminal may set or assume multiple LDFR IDs to be identical to the BWP ID of the associated/connected MR.
  • the SCS of the LP-WUS/LP-SS received through the above LDFR can be determined as the SCS of the associated/connected BWP.
  • the frequency resources of LP-WUS/LP-SS received through the above LDFR may be the frequency resources of LDFR overlapping with the associated/connected BWP.
  • the previous N LDFRs can be identically associated/connected to the active BWP after switching.
  • the above N can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • the above association/connection relationship can be set through upper layer parameters such as RRC and SIB, or can be defined in advance or set through a preamble, etc.
  • a terminal receiving an LP-WUS/LP-SS can wake up the MR. Or, if the reception quality of the LP-WUS/LP-SS is poor or the terminal determines that it is located outside the coverage area of the LP-WUS/LP-SS, the terminal can wake up the MR. Or, the terminal can wake up the MR by a direct instruction from the base station.
  • the method described below proposes a method for the terminal to set/determine the active BWP of the MR after wake-up in the above cases.
  • the active BWP may mean the DL BWP that receives the NR signal/channel or the UL BWP that transmits, and may be interpreted as either (or both) unless otherwise specified. Or, it may mean a separate specific BWP other than the active BWP of the terminal.
  • the base station can set the active BWP to be used after MR wake-up through upper layer parameters such as RRC and SIB.
  • the above BWP may be the last active BWP before MR enters sleep state.
  • the above BWP may be a BWP set in the MR by the firstActiveDownlinkBWP parameter.
  • this field contains the ID of the DL BWP to be activated or to be used for RLM, BFD and measurements if included in an RRCReconfiguration message contained in an NR or E-UTRA RRC message indicating that the SCG is deactivated, upon performing the RRC (re-)configuration. If the field is absent, the RRC (re-)configuration does not impose a BWP switch. If the field is absent for the PSCell at SCG deactivation, the UE considers the previously activated DL BWP as the BWP to be used for RLM, BFD and measurements.
  • the base station can assume that the BWP indicated by firstActiveDownlinkBWP is used as the active DL BWP when the MR of a terminal supporting LP-WUS switches from a sleep state to a wake-up state.
  • the base station can separately set the active BWP of the MR to be used after wake-up through LDFR setting (or association/linkage setting between LDFR and MR BWP).
  • the base station can set the above BWP to the LDFR (or a BWP that overlaps therewith) containing the last (successfully) transmitted LP-WUS/LP-SS just before wake-up.
  • the terminal can determine the active BWP to be used after MR wake-up as follows or can be set through upper layer parameters such as RRC and SIB.
  • the above BWP may be the last active BWP before the MR enters the sleep state.
  • the above BWP may be the firstActiveDownlinkBWP set in MR.
  • a terminal supporting LP-WUS When a terminal supporting LP-WUS receives the above RRC parameters and wakes up from MR sleep state, it can use the BWP indicated by firstActiveDownlinkBWP as the active DL BWP.
  • a terminal with CA (carrier aggregation) enabled can monitor LP-WUS in the S-cell (secondary cell).
  • the terminal can assume that the active DL BWP of the S-cell is the BWP indicated by firstActiveDownlinkBWP.
  • the base station can generate/transmit the LP-WUS/LP-SS signal using one or a combination of two or more of the methods below.
  • Method 3 If the channel is configured with 11 PRB BW in LP-WUS/LP-SS, the base station can assume 10 PRB for LP-WUS information bit mapping and overlay sequence mapping and generate LP-WUS/LP-SS signal. The base station can assume 10 PRB before DFT, and LP-WUS information bit mapping and overlay sequence mapping can be performed, and DFT can be performed based on 10 PRB. In addition, the base station can add 1 PRB to the DFT result to map frequency resources of 11 PRB.
  • the 1 PRB may be filled with 0 or used as a guard RB (or guard band).
  • the 1 PRB may include a known sequence (recognizable by the terminal).
  • the first (or last) 1 PRB value of 10 PRBs, which are DFT outputs, may be repeatedly mapped to the 1 PRB.
  • the above 10 PRBs can be changed and applied as X PRB values in the form of 2 ⁇ a * 3 ⁇ b * 5 ⁇ c.
  • the content for the above 1 PRB can be replaced with (11-X) PRB.
  • the base station can generate the LP-WUS/LP-SS signal assuming 12 PRB. In this case, the base station assumes 11 PRB before DFT and performs LP-WUS information mapping and overlay mapping, adds 1 RB to the length to perform DFT input, and the DFT can be performed with 12 PRB. In addition, the base station can map the frequency resource of 11 PRB by removing 1 PRB from the DFT result.
  • the removal of 1 PRB after the DFT may correspond to the lowest RB or the highest RB of the 12 PRBs, or may correspond to 0.5 RB from the lowest RE and 0.5 RB from the highest RE (i.e., a total of 1 RB), and the addition of 1 RB length before the DFT may be performed to suit each case.
  • the additional length of 1 RB before the DFT may be filled with 0, or a known sequence (recognizable to the terminal) may be transmitted.
  • LP-WUS information bits of 11 RB length or data corresponding to the length of 1 RB before (or after) the overlay sequence may be added in the form of a prefix (or postfix).
  • the above 12 PRBs can be changed and applied as X PRB values in the form of 2 ⁇ a * 3 ⁇ b * 5 ⁇ c.
  • the content for the above 1 PRB can be replaced with (X-11) PRB.
  • the terminal can expect the LP-WUS/LP-SS signal to be transmitted in one or a combination of two or more of the following methods.
  • Method 1 If LP-WUS/LP-SS is a channel with 11 PRB BW set, the terminal may not expect transmission of the LP-WUS/LP-SS signal generated by OOK-4 or may skip monitoring the LP-WUS/LP-SS signal.
  • Method 2 If LP-WUS/LP-SS is a channel with 11 PRB BW set, the terminal can receive LP-WUS/LP-SS even if OOK-4 is set (if OOK-1 is also set) expecting the signal to be transmitted as OOK-1.
  • the 1 PRB may be filled with zeros or may serve as a guard RB (or guard band).
  • the 1 PRB may transmit a known sequence (recognizable to the terminal).
  • the 1 PRB may be repeatedly mapped to the first (or last) 1 PRB value of 10 PRBs, which are DFT outputs. The terminal may utilize this to improve reception performance.
  • the above 10 PRBs can be changed and applied as X PRB values in the form of 2 ⁇ a * 3 ⁇ b * 5 ⁇ c.
  • the content for the above 1 PRB can be replaced with (11-X) PRB.
  • the terminal can receive/detect the signal assuming that the LP-WUS information bits and overlay sequence are mapped to 11 PRBs. If the terminal receives the signal using IDFT (or IFFT), the terminal can assume that the size of the operation is 12 PRBs. For example, the terminal performs iDFT (inverse DFT) or iFFT by zero-padding 1 PRB to the 11 PRB signal. However, the terminal can assume that the LP-WUS information bits and overlay sequence are mapped to 11 PRBs.
  • IDFT or IFFT
  • the 1 PRB may correspond to the lowest RB or the highest RB of the 12 PRBs, or may correspond to 0.5 RB from the lowest RE and 0.5 RB from the highest RE (i.e., a total of 1 RB).
  • the 1 PRB may be filled with 0 or may contain a known sequence (recognizable by the terminal).
  • LP-WUS information bits of 11 RB length or data corresponding to 1 RB length in front or behind the overlay sequence may be added in the form of a prefix or postfix.
  • Table 4 shows the maximum transmission bandwidth (BW) (for data/control channel transmission) defined in RB units for each SCS by channel BW.
  • Table 5 shows the minimum guard band defined in kHz units for each SCS by channel BW.
  • the LP-WUS/LP-SS signal needs to be transmitted beyond the maximum transmission BW defined in Table 4. This may mean that the minimum guard band defined in Table 5 is not secured.
  • this section proposes several methods for the case where the BW of an LP-WUS/LP-SS is set to 12 PRB.
  • the base station can generate/transmit the LP-WUS/LP-SS signal using one or a combination of two or more of the following methods.
  • the base station can use 11 PRBs with LP-WUS/LP-SS BW (same as UE channel BW).
  • the base station can determine/determine whether to apply the method based on the sync raster position. For example, if a separate sync raster is set for LP-WUS/LP-SS transmitting terminals (or a separate sync raster is set for channels below 5MHz (e.g., 3MHz), a terminal initially connected in such sync raster can assume the separately set LP-WUS/LP-SS BW.
  • the frequency resource allocation of LP-WUS/LP-SS to be transmitted in the guard band may not include the minimum guard band redefined in the above method 3.
  • ⁇ Option 1 12 PRBs are applied to channel BW exceeding 5MHz, and 11 PRBs are applied to 5MHz channel BW. In this case, only OOK-1 method is applied to 5MHz channel BW, and OOK-4 method is not applied.
  • ⁇ Option 2 12 PRB is applied for channel BW exceeding 5MHz, and 10 PRB is applied for channel BW of 5MHz.
  • ⁇ Option 3 12 PRBs are applied for channel BW exceeding 5MHz, 11 PRBs are applied for LP-SS (by using padding/truncation before and after DFT in case of OOK-4), and 10 PRBs are applied for LP-WUS for channel BW above 5MHz.
  • Method 6 When the channel BW of the terminal is 3MHz (SCS 15kHz), 5MHz (SCS 30kHz), or 10MHz (SCS 60kHz), the minimum guard band requirement in Table 5 may not be followed, or the value redefined in Method 3 may be applied.
  • the bandwidth of the LP-WUS/LP-SS signal can be set according to the sync raster.
  • the terminal can combine repeatedly transmitted LP-WUS and decode the signal to be transmitted through LP-WUS.
  • the proposed method may be a method for distinguishing between LP-WUS #1 with N-times repeated transmission set and LP-WUS #2 with no repeated transmission set.
  • the proposed method may be a method for distinguishing between the first transmission and other transmissions (i.e., the second, third, ..., Nth) for LP-WUS #3 with N-times repeated transmission set.
  • the terminal can set/receive repeat transmission instructions through the following methods.
  • ⁇ Whether to repeat transmission and the number of repeat transmissions are set through SIB (or UE dedicated (RRC) signaling).
  • LP-WUS Whether the LP-WUS to be received is a repeat transmission LP-WUS is indicated through the preamble transmitted with the LP-WUS signal (or before the LP-WUS).
  • the terminal may ignore/drop the LP-WUS instruction and report the reception failure to the base station. Alternatively, the terminal may wake up the MR in this case. Alternatively, the terminal may notify or request the base station to wake up the MR.
  • the above repeated transmission LP-WUS may mean an LP-WUS that transmits the same content
  • the above TDMed LP-WUS may mean an LP-WUS that transmits different content in different time resources.
  • Repeated transmission LP-WUS can be transmitted after a certain symbol/slot gap or in the next slot (the first symbol of the LP-WUS in which the content is initially transmitted or a symbol with the same symbol index/position within the slot).
  • TDM-encoded LP-WUSs can be transmitted continuously without separate symbol/slot intervals.
  • TDM-encoded LP-WUSs can be transmitted with 1 OFDM symbol interval.
  • the symbol/slot interval between repeatedly transmitted LP-WUSs and the symbol/slot interval between TDMed LP-WUSs can be set/indicated through separate upper layer signaling (RRC, SIB).
  • ⁇ LP-WUS for subgroups of UEs monitoring the same PO can be transmitted through the same LP-WUS opportunity, while subgroups of UEs monitoring different POs can be transmitted at a different time than the corresponding LP-WUS (i.e., transmitted as TDMed LP-WUS).
  • the mode for which the LP-WUS is intended can be distinguished through the time position (or LP-WUS opportunity) at which the LP-WUS is transmitted/received. That is, the mode for which the LP-WUS is intended can be distinguished by setting different LOs.
  • the present invention is not limited to the transmission and reception of uplink and/or downlink signals.
  • the present invention can also be used in direct communication between terminals.
  • the base station in the present invention may include not only a base station but also a relay node.
  • the base station operations in the present invention may be performed by the base station, but may also be performed by a relay node.
  • A-IoT could be a new type/segment of devices that operate solely on energy harvested from the surrounding environment.
  • A-IoT could refer to a new type of Internet of Things device that is powered by various energy sources harvested from the surrounding environment, such as radio waves, light, motion, and heat.
  • active signal generation and/or backscattering may be among the communication technologies considered to achieve low-power operation of A-IoT devices.
  • backscattering is a technique widely used in radio frequency identification (RFID), which allows devices to communicate with a network by reflecting incident waves after modulating them with information to be transmitted.
  • RFID radio frequency identification
  • the device may be powered by the incident RF signal or by stored energy.
  • IoT devices can be classified into various device types, such as passive, semi-passive, and active, depending on how they store energy and generate transmission signals.
  • a passive device does not have an energy storage device (e.g., a capacitor) and can communicate based on backscatter communication technology.
  • a semi-passive device has an energy storage device and can communicate using backscatter communication technology with the help of the energy storage device.
  • an active device has an energy storage device and can actively generate signals using active RF components and the stored energy to communicate.
  • the following three types of IoT devices can be considered.
  • device A can be a device without energy storage and without independent signal generation (e.g., a device that supports backscatter transmission).
  • device B can be a device with energy storage and without independent signal generation (e.g., a device that supports backscatter transmission).
  • the use of stored energy may involve amplification of the reflected signal.
  • device C may be a device with energy storage and independent signal generation (e.g., a device with an active RF component for transmission).
  • the following basic topologies may be considered to support A-IoT devices in indoor and outdoor scenarios.
  • the basic topologies may include direct connections between base stations and A-IoT devices, connections between base stations and intermediate nodes and A-IoT devices, connection support by auxiliary nodes, and/or connections between terminals and A-IoT devices.
  • the basic topologies proposed in this disclosure are merely examples, and the proposals in this disclosure may be extended/applied to other topologies.
  • A-IoT devices can be categorized into two types: Type 1 devices, which have a maximum power consumption of approximately 1 uW, are capable of storing energy, do not have an amplification function, and can transmit by backscattering a carrier wave (CW) provided from an external source (e.g., a reader such as a base station or a terminal, or a separate node).
  • Type 2 devices for example, have a maximum power consumption of approximately several hundred uW, are capable of storing energy, are capable of amplification, and can transmit by backscattering a carrier wave (CW) provided from an external source (e.g., a reader such as a base station or a terminal, or a separate node) or by using a signal generated internally.
  • CW carrier wave
  • the type/class of A-IoT devices can be distinguished based on parameters associated with device characteristics (e.g., presence/capacity of energy storage, energy/power consumption, presence/capacity of amplification, presence/capacity of BPF (band-pass filter), supported DL/UL transmission method(s), etc.) or a combination of parameters.
  • device characteristics e.g., presence/capacity of energy storage, energy/power consumption, presence/capacity of amplification, presence/capacity of BPF (band-pass filter), supported DL/UL transmission method(s), etc.
  • BPF capability can be distinguished by 3-dB bandwidth of supported BPF, sharpness, etc.
  • UL transmission methods can be distinguished by, for example, backscatter UL transmission, UL transmission by internal signal generation, etc.
  • LP-WUS can be transmitted and received between A-IoT devices.
  • the waveform transmitted from the reader to the A-IoT device may correspond to the waveform proposed through the embodiments of this specification.
  • the A-IoT device may include only LR without MR. Therefore, when the A-IoT device receives LP-WUS, it can perform operations such as initial connection or data transmission/reception through LR instead of triggering (or activating) MR.
  • Figure 6 is a flowchart of a signal transmission and reception method according to embodiments of the present invention.
  • a signal transmission and reception method may be performed by a terminal, and may include a step of setting a first resource and a second resource (S501), and a step of performing or omitting reception of a first signal on the first resource and a second signal on the second resource (S503).
  • a signal transmission and reception method may include a step of setting a first resource and a second resource (S501), and a step of performing or omitting transmission of a first signal on the first resource and a second signal on the second resource (S503).
  • the signal Even if expressed by a different name (e.g., first signal, second signal), if the signal is a signal for triggering the operation of another receiver based on its reception by a specific receiver or a signal received by an A-IoT device, it may correspond to LP-WUS in the present specification. In addition, even if expressed by a different name, if the signal is a signal for synchronizing LP-WUS, it may correspond to LP-SS in the present specification.
  • a different name e.g., first signal, second signal
  • the first receiver corresponds to a separate receiver (e.g., LP-WUR) for receiving LP-WUS
  • the second receiver corresponds to a primary receiver (e.g., MR).
  • the second receiver may be a receiver for receiving a paging signal or a control signal for a paging signal.
  • the second receiver may be a receiver capable of receiving a PDCCH.
  • the specific name may be changed from LP-WUR and MR, but the first receiver is designed to consume relatively less power than the second receiver.
  • the first receiver among the first and second receivers may be included.
  • the terminal/base station may operate based on Method #1.
  • the first resource of FIG. 6 corresponds to a resource for transmitting and receiving an LP-WUS and/or LP-SS associated with a first receiver
  • the second resource corresponds to a resource for an NR signal/channel associated with a second receiver
  • reception of the LP-WUS and/or LP-SS set in the first resource is performed, and the NR signal/channel set in the second resource is also received.
  • the NR signal/channel set in the second resource is a signal that is set independently for LP-WUS (not a signal triggered based on LP-WUS), and the NR signal/channel triggered by LP-WUS can be omitted together when reception of LP-WUS and/or LP-SS is omitted.
  • Whether transmission and reception of LP-WUS and/or LP-SS are omitted is determined based on whether the two resources overlap, regardless of whether an NR signal/channel is actually transmitted or received. Even if LP-WUS and/or LP-SS are omitted, the terminal can transmit and receive existing signals by operating the second receiver. However, if existing signals (e.g., SSB, system information, control channel, data channel, etc.) are not received due to LP-WUS and/or LP-SS, a major problem occurs compared to LP-WUS and/or LP-SS. Therefore, when multiplexing of the two signals is difficult due to the difference in SCS, it may be preferable to omit LP-WUS and/or LP-SS rather than NR signals/channels.
  • existing signals e.g., SSB, system information, control channel, data channel, etc.
  • an NR signal/channel may be expressed as a 'signal associated with a second receiver' or an 'OFDM symbol-based signal'.
  • the 'signal associated with a second receiver' or an 'OFDM symbol-based signal' may include a 'CP-OFDM-based signal' or a 'DFT-s-OFDM-based signal'.
  • transmission/reception of LP-SS and/or LP-WUS is set to be periodic (when the first resource is a periodic resource)
  • transmission/reception of LP-WUS and/or LP-SS is omitted in the first resource
  • the omitted LP-WUS and/or LP-SS can be scheduled/received through an aperiodic resource to which SCS applied to an NR signal/channel is applied.
  • the terminal may perform additional specific actions.
  • the specific actions may be actions in which the terminal triggers a second receiver.
  • the terminal may transmit a response signal based on the signal.
  • the action of triggering the second receiver may be expressed as an action of waking up the second receiver, or may be simply expressed as operating the second receiver.
  • an active BWP for the second receiver may be determined based on method #3.
  • the active BWP may include a downlink BWP and/or an uplink BWP.
  • the active BWP to be used after the second receiver is triggered may be set to an initial BWP or a default BWP.
  • the active BWP to be used after the second receiver is triggered may be preset via a higher layer parameter.
  • the active BWP to be used after the second receiver is triggered may be the BWP that was last activated before the second receiver stopped operating.
  • the base station/terminal can operate based on method #2.
  • the frequency range of LP-WUS and/or LP-SS can be set to 11 RB or 12 RB.
  • the base station/terminal can operate based on method #4, and when set to 12 RB, the base station/terminal can operate based on method #5.
  • the base station/terminal can operate based on method #6.
  • Figure 7 illustrates a communication system (1) applied to the present invention.
  • a communication system (1) applied to the present invention includes a wireless device, a base station, and a network.
  • the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication/wireless/5G device.
  • the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device/server (400).
  • Mobile devices can include smartphone, smart pad, wearable device (e.g., smart watch, smart glass), computer (e.g., laptop, etc.), etc.
  • Home appliances can include TV, refrigerator, washing machine, etc.
  • IoT devices can include sensors, smart meters, etc.
  • base stations and networks can also be implemented as wireless devices, and a specific wireless device (200a) can act as a base station/network node to other wireless devices.
  • wireless communication/connection can transmit/receive signals through various physical channels.
  • various configuration information setting processes for transmitting/receiving wireless signals various signal processing processes (e.g., channel encoding/decoding, modulation/demodulation, resource mapping/demapping, etc.), and resource allocation processes can be performed based on various proposals of the present invention.
  • a first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and/or one or more antennas (108).
  • the processor (102) controls the memories (104) and/or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document.
  • the processor (102) may process information in the memory (104) to generate first information/signal, and then transmit a wireless signal including the first information/signal via the transceiver (106).
  • the processor (102) may receive a wireless signal including second information/signal via the transceiver (106), and then store information obtained from signal processing of the second information/signal in the memory (104).
  • the memory (104) may be connected to the processor (102) and may store various information related to the operation of the processor (102). For example, the memory (104) may perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and/or operation flowcharts disclosed in this document.
  • the processor (102) and the memory (104) may be part of a communication modem/circuit/chip designed to implement a wireless communication technology (e.g., LTE, NR).
  • the transceiver (106) may be connected to the processor (102) and may transmit and/or receive wireless signals via one or more antennas (108).
  • the transceiver (106) may include a transmitter and/or a receiver.
  • the transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit.
  • a wireless device may also mean a communication modem/circuit/chip.
  • the second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and/or one or more antennas (208).
  • the processor (202) controls the memories (204) and/or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document.
  • the processor (202) may process information in the memory (204) to generate third information/signals, and then transmit a wireless signal including the third information/signals via the transceivers (206).
  • the processor (202) may receive a wireless signal including fourth information/signals via the transceivers (206), and then store information obtained from signal processing of the fourth information/signals in the memory (204).
  • the memory (204) may be connected to the processor (202) and may store various information related to the operation of the processor (202). For example, the memory (204) may perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and/or operation flowcharts disclosed in this document.
  • the processor (202) and the memory (204) may be part of a communication modem/circuit/chip designed to implement wireless communication technology (e.g., LTE, NR).
  • the transceiver (206) may be connected to the processor (202) and may transmit and/or receive wireless signals via one or more antennas (208).
  • the transceiver (206) may include a transmitter and/or a receiver.
  • the transceiver (206) may be used interchangeably with an RF unit.
  • a wireless device may also mean a communication modem/circuit/chip.
  • one or more protocol layers may be implemented by one or more processors (102, 202).
  • one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP).
  • One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and/or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and/or operation flowcharts disclosed in this document.
  • PDUs Protocol Data Units
  • SDUs Service Data Units
  • One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and/or operation flowcharts disclosed in this document.
  • One or more processors (102, 202) can generate signals (e.g., baseband signals) including PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and/or methods disclosed herein, and provide the signals to one or more transceivers (106, 206).
  • One or more processors (102, 202) can receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and/or operational flowcharts disclosed herein.
  • signals e.g., baseband signals
  • One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer.
  • One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSPs Digital Signal Processors
  • DSPDs Digital Signal Processing Devices
  • PLDs Programmable Logic Devices
  • FPGAs Field Programmable Gate Arrays
  • the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc.
  • the descriptions, functions, procedures, suggestions, methods and/or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202).
  • the descriptions, functions, procedures, suggestions, methods and/or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and/or sets of instructions.
  • One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and/or commands.
  • the one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and/or combinations thereof.
  • the one or more memories (104, 204) may be located internally and/or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.
  • One or more transceivers (106, 206) can transmit user data, control information, wireless signals/channels, etc., as mentioned in the methods and/or flowcharts of this document, to one or more other devices.
  • One or more transceivers (106, 206) can receive user data, control information, wireless signals/channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and/or flowcharts of this document, from one or more other devices.
  • one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals.
  • one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices.
  • one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals/channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and/or operational flowcharts disclosed herein, via one or more antennas (108, 208).
  • one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports).
  • One or more transceivers (106, 206) may convert received user data, control information, wireless signals/channels, etc.
  • One or more transceivers (106, 206) may convert processed user data, control information, wireless signals/channels, etc. from baseband signals to RF band signals using one or more processors (102, 202).
  • one or more transceivers (106, 206) may include an (analog) oscillator and/or a filter.
  • FIG 9 illustrates another example of a wireless device applicable to the present invention.
  • the wireless device may be implemented in various forms depending on the use case/service (see Figure 7).
  • the transceiver(s) (114) may include one or more transceivers (106, 206) and/or one or more antennas (108, 208) of FIG. 8.
  • the control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (140) and controls the overall operation of the wireless device.
  • the control unit (120) may control the electrical/mechanical operation of the wireless device based on the program/code/command/information stored in the memory unit (130).
  • control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless/wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless/wired interface in the memory unit (130).
  • Figure 10 illustrates a vehicle or autonomous vehicle applicable to the present invention.
  • the vehicle or autonomous vehicle may be implemented as a mobile robot, car, train, manned/unmanned aerial vehicle (AV), ship, etc.
  • AV manned/unmanned aerial vehicle
  • a vehicle or autonomous vehicle may include an antenna unit (108), a communication unit (110), a control unit (120), a driving unit (140a), a power supply unit (140b), a sensor unit (140c), and an autonomous driving unit (140d).
  • the antenna unit (108) may be configured as a part of the communication unit (110).
  • Blocks 110/130/140a to 140d correspond to blocks 110/130/140 of FIG. 9, respectively.
  • the communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, road side units, etc.), and servers.
  • the control unit (120) can control elements of the vehicle or autonomous vehicle (100) to perform various operations.
  • the control unit (120) can include an ECU (Electronic Control Unit).
  • the drive unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground.
  • the drive unit (140a) can include an engine, a motor, a power train, wheels, brakes, a steering device, etc.
  • the power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and can include a wired/wireless charging circuit, a battery, etc.
  • the sensor unit (140c) can obtain vehicle status, surrounding environment information, user information, etc.
  • the sensor unit (140c) may include an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an incline sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward/backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illuminance sensor, a pedal position sensor, etc.
  • IMU intial measurement unit
  • the autonomous driving unit (140d) may implement a technology for maintaining a driving lane, a technology for automatically controlling speed such as adaptive cruise control, a technology for automatically driving along a set path, a technology for automatically setting a path and driving when a destination is set, etc.
  • the communication unit (110) can receive map data, traffic information data, etc. from an external server.
  • the autonomous driving unit (140d) can generate an autonomous driving route and driving plan based on the acquired data.
  • the control unit (120) can control the drive unit (140a) so that the vehicle or autonomous vehicle (100) moves along the autonomous driving route according to the driving plan (e.g., speed/direction control).
  • the communication unit (110) can irregularly/periodically acquire the latest traffic information data from an external server and can acquire surrounding traffic information data from surrounding vehicles.
  • the sensor unit (140c) can acquire vehicle status and surrounding environment information.
  • the autonomous driving unit (140d) can update the autonomous driving route and driving plan based on newly acquired data/information.
  • the present invention can be applied to various wireless communication systems.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un LP-WUS et/ou un LP-SS reçu dans un terminal d'un système de communication sans fil par l'intermédiaire d'un récepteur de faible puissance qui peuvent être reçus conjointement avec un signal NR classique (un signal basé sur OFDM) provenant d'une station de base. Lorsque le LP-WUS et/ou le LP-SS et le signal NR classique ont au moins un symbole chevauchant dans un domaine temporel, l'émission/réception du LP-WUS ou du LP-SS peut être omise si des SCS entre les signaux se chevauchant sont différents les uns des autres.
PCT/KR2025/095168 2024-04-04 2025-04-04 Procédé et dispositif d'émission/réception de signal dans un système de communication sans fil Pending WO2025211917A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US202463574904P 2024-04-04 2024-04-04
US63/574,904 2024-04-04
KR10-2024-0061515 2024-05-09
KR20240061515 2024-05-09
KR20240106442 2024-08-08
KR10-2024-0106442 2024-08-08
KR20240157488 2024-11-07
KR10-2024-0157488 2024-11-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220004768A (ko) * 2019-07-26 2022-01-11 엘지전자 주식회사 무선통신 시스템에서 단말의 물리 하향링크 제어채널 모니터링 방법 및 상기 방법을 이용하는 장치
KR20220047569A (ko) * 2019-08-16 2022-04-18 엘지전자 주식회사 무선 통신 시스템에서 신호를 송수신하는 방법 및 이를 위한 장치
KR20230004255A (ko) * 2021-06-30 2023-01-06 한국전자통신연구원 상하향 비대칭 네트워크를 위한 통신 방법 및 장치
KR20230035284A (ko) * 2017-08-09 2023-03-13 삼성전자주식회사 무선 통신 시스템에서 pdsch를 전송하는 방법 및 장치
WO2023212025A1 (fr) * 2022-04-26 2023-11-02 Interdigital Patent Holdings, Inc. Procédés et appareil de coexistence dans le même canal de systèmes v2x nr et lte

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230035284A (ko) * 2017-08-09 2023-03-13 삼성전자주식회사 무선 통신 시스템에서 pdsch를 전송하는 방법 및 장치
KR20220004768A (ko) * 2019-07-26 2022-01-11 엘지전자 주식회사 무선통신 시스템에서 단말의 물리 하향링크 제어채널 모니터링 방법 및 상기 방법을 이용하는 장치
KR20220047569A (ko) * 2019-08-16 2022-04-18 엘지전자 주식회사 무선 통신 시스템에서 신호를 송수신하는 방법 및 이를 위한 장치
KR20230004255A (ko) * 2021-06-30 2023-01-06 한국전자통신연구원 상하향 비대칭 네트워크를 위한 통신 방법 및 장치
WO2023212025A1 (fr) * 2022-04-26 2023-11-02 Interdigital Patent Holdings, Inc. Procédés et appareil de coexistence dans le même canal de systèmes v2x nr et lte

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