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KR-20260062847-A - METHOD AND APPARATUS FOR SIGNAL TRANSMISSION BASED ON DISCONTINUOUS TRANSMISSION OPERATION IN COMMUNICATION SYSTEM

KR20260062847AKR 20260062847 AKR20260062847 AKR 20260062847AKR-20260062847-A

Abstract

A method and apparatus for signal transmission based on DTX operation in a communication system are disclosed. The method of a terminal comprises: receiving information from a base station indicating a first DTX (discontinuous transmission) active time; receiving information from the base station indicating a second DTX active time; and performing communication with the base station based on at least one of the first DTX active time or the second DTX active time.

Inventors

  • 문성현
  • 김지형
  • 김철순
  • 이정훈
  • 정회윤
  • 김중빈
  • 임경래

Assignees

  • 한국전자통신연구원

Dates

Publication Date
20260507
Application Date
20251022
Priority Date
20241029

Claims (20)

  1. As a method of terminal, A step of receiving information from a base station indicating the first DTX (discontinuous transmission) activation time; A step of receiving information from the base station indicating the second DTX activation time; and A step comprising communicating with the base station based on at least one of the first DTX active time or the second DTX active time, Method of the terminal.
  2. In claim 1, The first DTX activation time is set periodically, and the second DTX activation time is set non-periodically. Method of the terminal.
  3. In claim 1, The above second DTX activation time is opportunistically allocated by the dynamic signaling of the base station, Method of the terminal.
  4. In claim 1, The information indicating the second DTX activation time is included in the DCI (downlink control information) received at the base station, and the information indicating the second DTX activation time includes at least one of the start time, duration, or end time of the second DTX activation time. Method of the terminal.
  5. In claim 1, The end point of the above second DTX activation time is extended as needed, Method of the terminal.
  6. In claim 1, The first DTX active time and the second DTX active time are applied in different RRC (radio resource control) states, and each of the different RRC states is an RRC idle mode, an RRC inactive mode, or an RRC connected mode. Method of the terminal.
  7. In claim 1, The terminal in RRC connection mode applies the second DTX activation time, and the terminal in RRC idle mode or RRC inactive mode does not apply the second DTX activation time. Method of the terminal.
  8. In claim 1, The step of performing communication with the above-mentioned base station is, A step comprising transmitting and receiving a first signal to and from the base station that is allowed for one of the DTX active times, either the first DTX active time or the second DTX active time, during the overlapping time between the first DTX active time and the second DTX active time. Method of the terminal.
  9. In claim 1, The first DTX activation time does not overlap with the second DTX activation time, the second DTX activation time is forcibly terminated at a reference point, and the reference point is determined based on a specific point in time for the first DTX activation time. Method of the terminal.
  10. In claim 1, The first DTX activation time does not overlap with the second DTX activation time, a resource pool for the second DTX activation time is set, the second DTX activation time is activated within the resource pool, and the second DTX activation time is deactivated outside the resource pool. Method of the terminal.
  11. As a method of base station, A step of transmitting information indicating the first DTX (discontinuous transmission) activation time to a terminal; A step of transmitting information indicating the second DTX activation time to the terminal; and A step comprising communicating with the terminal based on at least one of the first DTX active time or the second DTX active time, Base station method.
  12. In claim 11, The first DTX activation time is set periodically, and the second DTX activation time is set non-periodically. Base station method.
  13. In claim 11, The above second DTX activation time is opportunistically allocated to the terminal by the dynamic signaling of the base station, Base station method.
  14. In claim 11, The information indicating the second DTX activation time is included in the DCI (downlink control information) transmitted from the base station, and the information indicating the second DTX activation time includes at least one of the start time, duration, or end time of the second DTX activation time. Base station method.
  15. In claim 11, The end point of the above second DTX activation time is extended as needed, Base station method.
  16. In claim 11, The first DTX active time and the second DTX active time are applied in different RRC (radio resource control) states, and each of the different RRC states is an RRC idle mode, an RRC inactive mode, or an RRC connected mode. Base station method.
  17. In claim 11, The above second DTX activation time is applied to the terminal in RRC connection mode, and the above second DTX activation time is not applied to the terminal in RRC idle mode or RRC inactive mode. Base station method.
  18. In claim 11, The step of communicating with the above terminal is, A step comprising transmitting and receiving a first signal to and from the terminal that is allowed for one of the DTX active times, either the first DTX active time or the second DTX active time, during the overlapping time between the first DTX active time and the second DTX active time. Base station method.
  19. In claim 11, The first DTX activation time does not overlap with the second DTX activation time, the second DTX activation time is forcibly terminated at a reference point, and the reference point is determined based on a specific point in time for the first DTX activation time. Base station method.
  20. In claim 11, The first DTX activation time does not overlap with the second DTX activation time, a resource pool for the second DTX activation time is set, the second DTX activation time is activated within the resource pool, and the second DTX activation time is deactivated outside the resource pool. Base station method.

Description

Method and apparatus for signal transmission based on discontinuous transmission operation in a communication system The present disclosure relates to signal transmission technology, and more specifically, to signal transmission technology based on discontinuous transmission (DTX) operation. Next-generation communication systems (e.g., NR (new radio) systems, 6G systems, etc.) are expected to serve as core infrastructure for the expansion of convergence services combining various future industries. These systems can support not only conventional mobile communication frequency bands but also millimeter wave, terahertz, and upper-mid bands. They can support a wider range of performance indicators and scenarios than conventional communication systems (e.g., LTE systems). Next-generation communication systems are expected to support ultra-long-distance communication, such as non-terrestrial networks. For these systems, technologies to compensate for propagation path loss and to expand cell coverage are necessary. In particular, wireless resource management methods that support beam-hopping operations to compensate for insufficient transmission power from satellite nodes are required. FIG. 1 is a conceptual diagram illustrating embodiments of a communication system. FIG. 2 is a block diagram illustrating embodiments of the device. FIG. 3 is a conceptual diagram illustrating embodiments of a non-ground network. FIG. 4 is a conceptual diagram illustrating embodiments of a beam hopping method for a satellite node. FIG. 5 is a conceptual diagram illustrating embodiments of the DTX operation method. FIG. 6 is a conceptual diagram illustrating embodiments of a method for setting multiple cell DTX activation times having a common cycle. FIG. 7 is a conceptual diagram illustrating embodiments of a method for setting multiple cell DTX activation times having independent cycles. FIG. 8 is a conceptual diagram illustrating embodiments of a method for allocating non-periodic cell DTX activation time. FIG. 9 is a conceptual diagram illustrating embodiments of a signal transmission method based on overlapping cell DTX active times. FIG. 10 is a conceptual diagram illustrating embodiments of a method for setting up a resource pool for cell DTX active time. FIG. 11 is a conceptual diagram illustrating a first embodiment of a beam-specific cell DTX setting method. FIG. 12 is a conceptual diagram illustrating a second embodiment of a beam-specific cell DTX setting method. The present disclosure is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present disclosure to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the present disclosure. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. Such terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and/or" includes a combination of a plurality of related described items or any of a plurality of related described items. In embodiments of the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B". Additionally, in embodiments of the present disclosure, "at least one of A and B" may mean "at least one of A or B" or "at least one of one or more combinations of A and B". When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. The terms used in this disclosure are used merely to describe specific embodiments and are not intended to limit this disclosure. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this disclosure, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by