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US-20260129580-A1 - METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING INFORMATION THROUGH LOW POWER SIGNAL

US20260129580A1US 20260129580 A1US20260129580 A1US 20260129580A1US-20260129580-A1

Abstract

Disclosed are methods and apparatuses for transmitting and receiving information through a low-power signal. A method of a terminal may comprise: receiving, from a base station, low-power wake-up signal (LP-WUS) monitoring occasion (LO) configuration information including a first offset and a second offset; determining, in a time domain, a frame before the first offset from a paging occasion (PO) as an LO frame in which an LO is configured; determining a time after the second offset from a start time of the LO frame as a start time of the LO; and performing a monitoring operation of an LP-WUS from the start time of the LO.

Inventors

  • Junghoon Lee
  • Ji Hyung KIM
  • Cheulsoon KIM
  • Sung-Hyun Moon
  • Hoiyoon Jung

Assignees

  • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Dates

Publication Date
20260507
Application Date
20250924
Priority Date
20240926

Claims (20)

  1. 1 . A method of a terminal, comprising: receiving, from a base station, low-power wake-up signal (LP-WUS) monitoring occasion (LO) configuration information including a first offset and a second offset; determining, in a time domain, a frame before the first offset from a paging occasion (PO) as an LO frame in which an LO is configured; determining a time after the second offset from a start time of the LO frame as a start time of the LO; and performing a monitoring operation of an LP-WUS from the start time of the LO.
  2. 2 . The method of claim 1 , wherein the first offset is a frame-level offset configured in units of frames, and the second offset is a slot-level offset configured in units of slots or a symbol-level offset configured in units of symbols.
  3. 3 . The method of claim 1 , wherein based on a configuration of a plurality of LOs associated with the PO, the LO configuration information includes the first offset for each of the plurality of LOs.
  4. 4 . The method of claim 1 , wherein the LO configuration information further includes information indicating a number of beams used for LP-WUS transmission and information indicating a number of LP-WUS monitoring occasions (MOs) for each of the beams, the LO includes the LP-WUS MOs, and positions of the LP-WUS MOs within the LO are determined based on the number of beams and the number of LP-WUS MOs.
  5. 5 . The method of claim 1 , further comprising performing a monitoring operation for reception of paging in one or more POs mapped to the LO, based on the LP-WUS detected by the monitoring operation indicating a wake-up of the terminal.
  6. 6 . The method of claim 1 , wherein the LP-WUS indicates one or more terminal subgroups that perform a monitoring operation for reception of paging in one or more POs mapped to the LO, and each of the one or more terminal subgroups includes one or more terminals.
  7. 7 . The method of claim 6 , wherein the LP-WUS supports up to 32 codepoints to indicate the one or more terminal subgroups.
  8. 8 . The method of claim 6 , wherein based on the LO and the PO having a 1-to-1 mapping relation, the LP-WUS indicates up to 31 terminal subgroups for one PO or an entire set of terminal subgroups for the one PO.
  9. 9 . The method of claim 6 , wherein based on the LO and the PO having a 1-to-2 mapping relation, the LP-WUS indicates up to 15 terminal subgroups for each of two POs or an entire set of terminal subgroups for each of the two POs.
  10. 10 . The method of claim 6 , wherein based on the LO and the PO having a 1-to-4 mapping relation, the LP-WUS indicates up to 7 terminal subgroups for each of four POs or an entire set of terminal subgroups for each of the four POs.
  11. 11 . A method of a base station, comprising: transmitting, to a terminal, low-power wake-up signal (LP-WUS) monitoring occasion (LO) configuration information including a first offset and a second offset; determining, in a time domain, a frame before the first offset from a paging occasion (PO) as an LO frame in which an LO is configured; determining a time after the second offset from a start time of the LO frame as a start time of the LO; and transmitting an LP-WUS to the terminal after the start time of the LO.
  12. 12 . The method of claim 11 , wherein the first offset is a frame-level offset configured in units of frames, and the second offset is a slot-level offset configured in units of slots or a symbol-level offset configured in units of symbols.
  13. 13 . The method of claim 11 , wherein based on a configuration of a plurality of LOs associated with the PO, the LO configuration information includes the first offset for each of the plurality of LOs.
  14. 14 . The method of claim 11 , wherein the LO configuration information further includes information indicating a number of beams used for LP-WUS transmission and information indicating a number of LP-WUS monitoring occasions (MOs) for each of the beams, the LO includes the LP-WUS MOs, and positions of the LP-WUS MOs within the LO are determined based on the number of beams and the number of LP-WUS MOs.
  15. 15 . The method of claim 11 , further comprising transmitting: paging to the terminal in one or more POs mapped to the LO.
  16. 16 . The method of claim 11 , wherein the LP-WUS indicates one or more terminal subgroups that perform a monitoring operation for reception of paging in one or more POs mapped to the LO, and each of the one or more terminal subgroups includes one or more terminals.
  17. 17 . The method of claim 16 , wherein the LP-WUS supports up to 32 codepoints to indicate the one or more terminal subgroups.
  18. 18 . The method of claim 16 , wherein based on the LO and the PO having a 1-to-1 mapping relation, the LP-WUS indicates up to 31 terminal subgroups for one PO or an entire set of terminal subgroups for the one PO.
  19. 19 . The method of claim 16 , wherein based on the LO and the PO having a 1-to-2 mapping relation, the LP-WUS indicates up to 15 terminal subgroups for each of two POs or an entire set of terminal subgroups for each of the two POs.
  20. 20 . The method of claim 16 , wherein based on the LO and the PO having a 1-to-4 mapping relation, the LP-WUS indicates up to 7 terminal subgroups for each of four POs or an entire set of terminal subgroups for each of the four POs.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Korean Patent Applications No. 10-2024-0131079, filed on Sep. 26, 2024, No. 10-2025-0059760, filed on May 8, 2025, No. 10-2025-0116065, filed on Aug. 20, 2025, and No. 10-2025-0136638, filed on Sep. 22, 2025, with the Korean Intellectual Property Office (KIPO), the entire contents of which are hereby incorporated by reference. BACKGROUND 1. Technical Field The present disclosure relates to a communication technique, and more particularly, to a technique for transmitting and receive information through a low-power signal. 2. Related Art The communication system (e.g., a new radio (NR) communication system) using a higher frequency band (e.g., a frequency band of 6 GHz or above) than a frequency band (e.g., a frequency band of 6 GHz or below) of the long term evolution (LTE) communication system (or, LTE-A communication system) is being considered for processing of soaring wireless data. The NR system may support not only a frequency band of 6 GHz or below, but also a frequency band of 6 GHz or above, and may support various communication services and scenarios compared to the LTE system. In addition, requirements of the NR system may include enhanced Mobile BroadBand (eMBB), Ultra Reliable Low Latency Communication (URLLC), and Massive Machine Type Communication (mMTC). Meanwhile, low-power operation may be supported in a communication system. A terminal supporting low-power operation may operate in an active state or a sleep state. The terminal in the sleep state may switch its operating state to the active state for paging monitoring. The terminal in the active state may perform paging monitoring. To reduce paging monitoring at the terminal, a paging early indication (PEI) may be introduced. The terminal supporting PEI may monitor downlink control information (DCI) (e.g., PEI DCI) that performs early paging indication sufficiently earlier than a preconfigured paging occasion (PO). When the PEI DCI is received and a valid paging indication is identified in the PEI DCI, the terminal may determine that the terminal will soon be called, and may monitor the next PO. If necessary, the terminal may further perform an SSB measurement operation for synchronization and automatic gain control (AGC). It may be considered to use another signal that replaces the PEI DCI for power saving at the terminal. Even when another signal is used, an SSB measurement operation for synchronization and AGC may still be required before paging monitoring. Therefore, methods for configuring a transmission occasion of another signal in consideration of the SSB measurement operation are required. SUMMARY The present disclosure for resolving the above-described problems is directed to providing a method and apparatus for transmitting and receive information through a low-power signal. A method of a terminal, according to exemplary embodiments of the present disclosure, may comprise: receiving, from a base station, low-power wake-up signal (LP-WUS) monitoring occasion (LO) configuration information including a first offset and a second offset; determining, in a time domain, a frame before the first offset from a paging occasion (PO) as an LO frame in which an LO is configured; determining a time after the second offset from a start time of the LO frame as a start time of the LO; and performing a monitoring operation of an LP-WUS from the start time of the LO. The first offset may be a frame-level offset configured in units of frames, and the second offset may be a slot-level offset configured in units of slots or a symbol-level offset configured in units of symbols. Based on a configuration of a plurality of LOs associated with the PO, the LO configuration information may include the first offset for each of the plurality of LOs. The LO configuration information may further include information indicating a number of beams used for LP-WUS transmission and information indicating a number of LP-WUS monitoring occasions (MOs) for each of the beams, the LO may include the LP-WUS MOs, and positions of the LP-WUS MOs within the LO may be determined based on the number of beams and the number of LP-WUS MOs. The method may further comprise: performing a monitoring operation for reception of paging in one or more POs mapped to the LO, based on the LP-WUS detected by the monitoring operation indicating a wake-up of the terminal. The LP-WUS may indicate one or more terminal subgroups that perform a monitoring operation for reception of paging in one or more POs mapped to the LO, and each of the one or more terminal subgroups may include one or more terminals. The LP-WUS may support up to 32 codepoints to indicate the one or more terminal subgroups. Based on the LO and the PO having a 1-to-1 mapping relation, the LP-WUS may indicate up to 31 terminal subgroups for one PO or an entire set of terminal subgroups for the one PO. Based on the LO and the PO having a 1-to-2 mapping rel