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KR-102963713-B1 - Wireless communication method, device, and system

KR102963713B1KR 102963713 B1KR102963713 B1KR 102963713B1KR-102963713-B1

Abstract

Embodiments of the present disclosure provide a wireless communication method, device, and system. The method comprises: a step in which a terminal device receives control information—wherein the control information triggers a channel or signal, and the reception or monitoring of the control information is related to two TCI states, and the DCI format corresponding to the control information does not include a TCI field—; and a step in which the terminal device transmits or receives a channel or signal according to two TCI states or according to one of two TCI states.

Inventors

  • 천, 저
  • 장, 레이
  • 장, 젠
  • 장, 친옌

Assignees

  • 원피니티 가부시끼가이샤

Dates

Publication Date
20260513
Application Date
20201015

Claims (20)

  1. As a wireless communication device configured in terminal equipment: A receiver configured to receive control information—said that the control information triggers a physical downlink shared channel (PDSCH), that the reception or monitoring of the control information is associated with two TCI states, and that the DCI format corresponding to the control information does not include a TCI field—; and It includes a processor configured to receive the physical downlink shared channel according to the two TCI states or according to one of the two TCI states, and One of the two TCI states above refers to a first TCI state indicated by a MAC-CE command among the TCI states of a CORESET (control resource set) used to receive or monitor the control information, and A device in which the time offset between the above control information and the above physical downlink sharing channel is greater than or equal to a predetermined time period.
  2. In paragraph 1, the time frequency resource used to receive or monitor the control information is: The earliest symbol used to receive or monitor the above control information; PRB of the lowest index used to receive or monitor the above control information; and A device that is one of the PRBs of the lowest index within the earliest symbol used to receive or monitor the above control information.
  3. In paragraph 1, the physical downlink shared channel (PDSCH) is associated with a first TCI state, and the first TCI state is: A first TCI state indicated by a MAC-CE command among the TCI states of a CORESET (control resource set) used to receive or monitor the above control information; The TCI state of the lowest ID among the TCI states of the CORESET (control resource set) used to receive or monitor the above control information; A TCI state applied by the first control resource set indicated by RRC signaling among the two control resource sets used to receive or monitor the above control information; A TCI state applied by the control resource set with the lowest ID among the two control resource sets used to receive or monitor the above control information; A TCI state corresponding to the first search space set indicated by RRC signaling among the two search space sets used to receive or monitor the above control information; A TCI state corresponding to the search space set with the lowest ID among the two search space sets used to receive or monitor the above control information; and A device referring to at least one of the TCI states applied by a time frequency resource used to receive or monitor the above control information.
  4. In paragraph 3, the time frequency resource used to receive or monitor the control information is: The earliest symbol used to receive or monitor the above control information; PRB of the lowest index used to receive or monitor the above control information; and A device that is one of the PRBs of the lowest index within the earliest symbol used to receive or monitor the above control information.
  5. In paragraph 3, the physical downlink shared channel (PDSCH) is additionally associated with a second TCI state, and the second TCI state is: A device for designating a TCI state among the two TCI states other than the first TCI state.
  6. In claim 1, a device in which, depending on RRC signaling or the DCI field of the DCI format, the processor determines to receive the physical downlink shared channel according to the two TCI states.
  7. In claim 1, a device in which, depending on RRC signaling or the DCI field of the DCI format, the processor determines to receive the physical downlink shared channel according to one of the two TCI states.
  8. In paragraph 6, the device in which the DCI field of the DCI format is the TDRA field of the DCI format.
  9. In paragraph 6, the RRC signaling is a device used to indicate whether the physical downlink shared channel is associated with one TCI state or two TCI states.
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Description

Wireless communication method, device, and system The present disclosure relates to the field of communications. To alleviate increasingly dense spectrum resources, NR (New Radio) introduced high-frequency communication modes to increase the available frequency resources of communication systems, thereby improving system capacity. NR Release 15 introduces a method for indicating the quasi-collocation (QCL) parameters of physical downlink control channels (PDCCHs). Generally speaking, the QCL parameters of the antenna port of the demodulation reference signal (DM-RS) of a PDCCH within a control resource set (CORESET) are indicated by radio resource control (RRC) signaling and media access control (MAC-CE) signaling. Specifically, if the CORESET corresponding to a PDCCH is configured with more than one transmission configuration indicator (TCI) state ( tci-StatesPDCCH-ToAddList or tci-StatesPDCCH-ToReleaseList ) via RRC signaling, MAC-CE may be used to activate one of the TCI states. After a TCI state is activated, the antenna port of the PDCCH's DM-RS and the reference signal corresponding to the activated TCI state are quasi-collocated. NR Release 15 also introduces a method for indicating QCL parameters of a physical downlink shared channel (PDSCH). Generally speaking, for dynamic scheduling, there are two methods for indicating QCL parameters of a PDSCH: when the scheduling DCI format (downlink control information format) of the PDSCH includes a TCI field, the QCL parameters of the PDSCH are determined by the TCI status indicated by the TCI field of the DCI format; and when the scheduling DCI format of the PDSCH does not include a TCI field, the QCL parameters of the PDSCH are determined by the QCL assumption or TCI status applied by CORESET to receive the DCI format (PDCCH). It should be noted that the foregoing description of the background technology is provided merely for the clear and complete explanation of the present disclosure and for easy understanding by those skilled in the art. Furthermore, the technical solution described above should not be understood as being known to those skilled in the art simply because it is described in the background of the present disclosure. The elements and features described in one drawing or embodiment of the present disclosure may be combined with the elements and features described in one or more additional drawings or embodiments. Furthermore, in the drawings, similar reference numbers designate corresponding parts across multiple drawings and may be used to designate identical or similar parts in two or more embodiments. The drawings constitute part of the specification and are included to provide further understanding of the present disclosure, illustrating preferred embodiments of the present disclosure, and are used together with the description to present the principles of the present disclosure. The accompanying drawings in the following description are some embodiments of the present disclosure, and it will be apparent to those skilled in the art that other accompanying drawings can be obtained from these accompanying drawings without creative effort. In the drawings: FIG. 1 is a schematic diagram of a wireless communication method of an embodiment of the first aspect of the present disclosure. Figure 2 is a schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a single-TCI PDSCH scheduled by the PDCCH. Figure 3 is another schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a single-TCI PDSCH scheduled by the PDCCH. Figure 4 is an additional schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a single-TCI PDSCH scheduled by the PDCCH. Figure 5 is another schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a single-TCI PDSCH scheduled by the PDCCH. Figure 6 is another schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a single-TCI PDSCH scheduled by the PDCCH. Figure 7 is a schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a multi-TCI PDSCH scheduled by the PDCCH. Figure 8 is another schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a multi-TCI PDSCH scheduled by the PDCCH. FIG. 9 is a schematic diagram of a wireless communication method of an embodiment of the second aspect of the present disclosure. Figure 10 is a schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a single-TCI PDSCH scheduled by the PDCCH. Figure 11 is a schematic diagram of the mapping relationship between the TCI state of a PDCCH and the TCI state of a multi-TCI PDSCH scheduled by the PDCCH. FIG. 12 is a schematic diagram of a wireless communication method of an embodiment of the third aspect of the p