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JP-2026076238-A - Terminal devices and network devices

JP2026076238AJP 2026076238 AJP2026076238 AJP 2026076238AJP-2026076238-A

Abstract

[Problem] To provide a communication method, apparatus, and computer-readable storage medium. [Solution] The method in a wireless communication system includes, in a terminal device, receiving at least one downlink control information (DCI) message, determining at least one transmit setting indicator (TCI) state based on at least one DCI message, and performing a transmission with the network based on at least one TCI state. The at least one DCI message indicates at least one of a first TCI instruction, a second TCI instruction, or a third TCI instruction. In this way, multiple TCI states can be indicated for multi-transmit/receive point (TRP) transmission. [Selection Diagram] Figure 6

Inventors

  • グアン ペン
  • ガオ ユーカイ
  • ワン ガン

Assignees

  • 日本電気株式会社

Dates

Publication Date
20260511
Application Date
20260120

Claims (12)

  1. Means for receiving first downlink control information (DCI) from a network device, which includes a first TCI state and a second TCI state among a plurality of transmit setting indicator (TCI) states indicated by a first radio resource control (RRC) configuration, Means for receiving from the network device a second RRC configuration indicating that both the first TCI state and the second TCI state are applied to physical uplink shared channel (PUSCH) transmission, The means for performing the PUSCH transmission with the network device, Equipped with, The aforementioned PUSCH transmission is associated with a first PUSCH transmission opportunity and a second PUSCH transmission opportunity. The first TCI state applies to a first SRS resource identified by a first Sounding Reference Signal (SRS) resource indicator of a second DCI and the first PUSCH transmission opportunity, and the second TCI state applies to a second SRS resource identified by a second SRS resource indicator of a second DCI and the second PUSCH transmission opportunity, The application time of the first TCI state and the second TCI state is based on the pool index of the control resource set (CORESET) and whether the first TCI state and the second TCI state are different from previously indicated TCI states. Terminal device.
  2. The first SRS resource corresponds to the most recent first transmission of the SRS resource identified by the first SRS resource indicator, and the second SRS resource corresponds to the most recent second transmission of the SRS resource identified by the second SRS resource indicator. The terminal device according to claim 1.
  3. The PUSCH transmission is performed based on a first precoder, which is determined based on the first SRS resource indicator. The terminal device according to claim 1.
  4. The PUSCH transmission is performed based on a second precoder, which is determined based on the second SRS resource indicator. The terminal device according to claim 1.
  5. The system includes means for receiving a first mapping and a second mapping via media access control (MAC) control element (CE) signaling. The first mapping, which shows the correspondence between the first TCI state and the TCI code point of the DCI message, is associated with a first control resource set (CORESET) pool, and the second mapping, which shows the correspondence between the second TCI state and the TCI code point of the DCI message, is associated with a second CORESET pool. The terminal device according to claim 1.
  6. The aforementioned PUSCH transmission is a non-codebook-based transmission. The terminal device according to claim 1.
  7. Means for transmitting first downlink control (DCI) information to a terminal device, including a first TCI state and a second TCI state among a plurality of transmit setting indicator (TCI) states indicated by a first radio resource control (RRC) configuration, Means for transmitting a second RRC configuration to the terminal device, indicating that both the first TCI state and the second TCI state are applied to physical uplink shared channel (PUSCH) transmission, The means for performing the PUSCH transmission with the terminal device, Equipped with, The aforementioned PUSCH transmission is associated with a first PUSCH transmission opportunity and a second PUSCH transmission opportunity. The first TCI state applies to a first SRS resource identified by a first Sounding Reference Signal (SRS) resource indicator of a second DCI and the first PUSCH transmission opportunity, and the second TCI state applies to a second SRS resource identified by a second SRS resource indicator of a second DCI and the second PUSCH transmission opportunity, The application time of the first TCI state and the second TCI state is based on the pool index of the control resource set (CORESET) and whether the first TCI state and the second TCI state are different from previously indicated TCI states. Network device.
  8. The first SRS resource corresponds to the most recent first transmission of the SRS resource identified by the first SRS resource indicator, and the second SRS resource corresponds to the most recent second transmission of the SRS resource identified by the second SRS resource indicator. The network device according to claim 7.
  9. The PUSCH transmission is performed based on a first precoder, which is determined based on the first SRS resource indicator. The network device according to claim 7.
  10. The PUSCH transmission is performed based on a second precoder, which is determined based on the second SRS resource indicator. The network device according to claim 7.
  11. The system includes means for receiving a first mapping and a second mapping via media access control (MAC) control element (CE) signaling. The first mapping, which shows the correspondence between the first TCI state and the TCI code point of the DCI message, is associated with a first control resource set (CORESET) pool, and the second mapping, which shows the correspondence between the second TCI state and the TCI code point of the DCI message, is associated with a second CORESET pool. The network device according to claim 7.
  12. The aforementioned PUSCH transmission is a non-codebook-based transmission. The network device according to claim 7.

Description

Embodiments of this disclosure generally relate to the field of telecommunications, and more particularly to methods, apparatus, and computer storage media for communication. MIMO (Multiple Input Multiple Output) technology is widely used in current wireless communication systems, where network devices use multiple antenna elements to communicate with terminal devices. Furthermore, to improve the reliability and robustness of communication between network devices and terminal devices, the Third Generation Partnership Project (3GPP®) Release 16 proposed and discussed multi-transmit/receive point (multi-TRP/MTRP) (and multi-panel receive) technology for downlink data transmission (physical downlink shared channel (PDSCH), etc.). Release 17 extends multi-TRP transmission to other physical channels (physical downlink control channel (PDCCH), physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), etc.), based on the 3GPP Unified Transmit Setting Indicator (TCI)/Spatial Relations Framework Releases 15/16. Simultaneously, in Release 17, a unified TCI framework was developed to replace/supplement the TCI/spatial relationship framework of Releases 15/16 for beam direction. Generally, network devices can use Downlink Control Information (DCI) messages to provide scheduling information to terminal devices. While several proposals regarding DCI messages for enabling multi-TRP and/or multi-panel transmissions have been discussed and some agreements have been reached, there is still a need to extend the structure of DCI to better support multi-TRP transmissions. The above and other purposes, features, and advantages of this disclosure will become clearer as some embodiments of this disclosure are described in more detail in the attached drawings. This disclosure shows an exemplary communication network on which embodiments of this disclosure can be implemented.This disclosure shows an exemplary communication network on which embodiments of this disclosure can be implemented.This disclosure shows an exemplary communication network on which embodiments of this disclosure can be implemented. Examples of multi-TRP transmission using the four transmission methods described above are shown. The following shows the signaling flow of communication according to some exemplary embodiments of the present disclosure.The following shows the signaling flow of communication according to some exemplary embodiments of the present disclosure.The following shows the signaling flow of communication according to some exemplary embodiments of the present disclosure.The following shows the signaling flow of communication according to some exemplary embodiments of the present disclosure. This shows an example of when to apply multi-DCI. This shows an example of when to apply multi-DCI. A flowchart shows an exemplary method performed by a terminal device according to some embodiments of the present disclosure. A flowchart shows an exemplary method performed by a terminal device according to some embodiments of the present disclosure. A flowchart shows an exemplary method performed by a terminal device according to some embodiments of the present disclosure. A flowchart shows an exemplary method performed by a network device according to some embodiments of the present disclosure. A flowchart shows an exemplary method performed by a network device according to some embodiments of the present disclosure. A flowchart shows an exemplary method performed by a network device according to some embodiments of the present disclosure. This is a schematic block diagram of an apparatus suitable for carrying out the embodiments of the present disclosure. Throughout all drawings, identical or similar reference numbers represent identical or similar elements. The principles of this disclosure will be described with reference to several exemplary embodiments. These embodiments are described solely for illustrative purposes and should be helpful to those skilled in the art in understanding and implementing this disclosure; they do not imply any limitation to the scope of this disclosure. The embodiments described herein can be implemented in various ways other than those described below. In the following description and claims, unless otherwise defined, all technical and scientific terms used shall have the same meaning as those generally understood by those skilled in the art to which this disclosure pertains. References to “one embodiment,” “embodiment,” and “exemplary embodiment” in this disclosure indicate that the described embodiment may include certain features, structures, or characteristics, but not all embodiments are required to include such features, structures, or characteristics. Furthermore, these expressions do not necessarily refer to the same embodiment. Moreover, if certain features, structures, or characteristics are described in relation to an embodiment, it is considered within the knowledge of those skilled in the