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CN-122029921-A - Terminal, wireless communication method and base station

CN122029921ACN 122029921 ACN122029921 ACN 122029921ACN-122029921-A

Abstract

The terminal according to an aspect of the present disclosure includes a reception unit that receives a setting regarding the number or maximum number of layers used in reception of a Physical Downlink Control Channel (PDCCH) using a plurality of layers, and a control unit that controls reception of the PDCCH using the plurality of layers based on the setting. According to the mode of the present disclosure, resource efficiency can be improved.

Inventors

  • MATSUMURA YUSUKE
  • Koga shuneko
  • Dao Kangjie
  • True Okamura

Assignees

  • 株式会社NTT都科摩

Dates

Publication Date
20260512
Application Date
20230818

Claims (6)

  1. 1. A terminal, comprising: A receiving unit for receiving a setting related to the number or maximum number of layers used in reception of a Physical Downlink Control Channel (PDCCH) using a plurality of layers, and And a control unit configured to control reception of the PDCCH using the plurality of layers based on the setting.
  2. 2. The terminal of claim 1, wherein, The control unit determines that the priority of a layer having a smaller or larger number among the plurality of layers is high.
  3. 3. The terminal of claim 1, wherein, The reception unit receives information on a precoder applied to the PDCCH when the demodulation reference signal of the PDCCH is not transmitted, and the control unit assumes that the PDCCH and the demodulation reference signal are transmitted using the same precoder when the demodulation reference signal is transmitted.
  4. 4. The terminal of claim 1, wherein, The plurality of layers correspond to different transmit set indication (TCI) states.
  5. 5. A wireless communication method for a terminal includes: A step of receiving a setting related to the number or maximum number of layers used in reception of a Physical Downlink Control Channel (PDCCH) using a plurality of layers, and And controlling reception of the PDCCH using the plurality of layers based on the setting.
  6. 6. A base station, comprising: a transmitting unit for transmitting a setting related to the number or maximum number of layers used in reception of a Physical Downlink Control Channel (PDCCH) using a plurality of layers, and And a control unit that controls transmission of the PDCCH using the setting and using the plurality of layers.

Description

Terminal, wireless communication method and base station Technical Field The present disclosure relates to a terminal, a wireless communication method, and a base station in a next generation mobile communication system. Background In a universal mobile telecommunications system (Universal Mobile Telecommunication System (UMTS)) network, long term evolution (Long Term Evolution (LTE)) is standardized for the purpose of further high-speed data rates, low latency, and the like (non-patent document 1). Further, for the purpose of further increasing capacity, height, and the like of LTE (third generation partnership project (3 rd Generation Partnership Project (3 GPP (registered trademark))) versions (Release (rel.)) 8 and 9), LTE-Advanced (3 GPP rel.10-14) has been standardized. Subsequent systems of LTE (e.g., also referred to as fifth generation mobile communication system (5 th generation mobile communication system (5G)), 5g+ (plus), sixth generation mobile communication system (6 th generation mobile communication system (6G)), new Radio (NR)), 3gpp rel.15 later, and the like are also being studied. Prior art literature Non-patent literature Non-patent document 1：3GPP TS 36.300 V8.12.0 "Evolved Universal Terrestrial Radio Access （E-UTRA） and Evolved Universal Terrestrial Radio Access Network （E-UTRAN）; Overall description; Stage 2 （Release 8）",2010, month 4 Disclosure of Invention Problems to be solved by the invention In future wireless communication systems (e.g., NR), for example, from the viewpoint of improving resource efficiency, it is being studied to improve the capacity (capability) of a downlink control channel. However, the specific method thereof has not been studied sufficiently. If this study is insufficient, the improvement of resource efficiency is hindered, and there is a concern that the increase of communication throughput is suppressed. Accordingly, it is an object of the present disclosure to provide a terminal, a wireless communication method, and a base station capable of improving resource efficiency. Means for solving the problems The terminal according to an aspect of the present disclosure includes a reception unit that receives a setting regarding the number or maximum number of layers used in reception of a Physical Downlink Control Channel (PDCCH) using a plurality of layers, and a control unit that controls reception of the PDCCH using the plurality of layers based on the setting. Effects of the invention According to the mode of the present disclosure, resource efficiency can be improved. Drawings Fig. 1A is a diagram showing an example of the number of accommodated UEs per slot/symbol of each channel. Fig. 1B is a diagram showing an example of the number of accommodated UEs per cell of each channel. Fig. 2 is a diagram showing an example of an antenna port PDCCH DMRS. Fig. 3 is a diagram showing an example of PDCCH DMRS to which FD-OCC is applied. Fig. 4 is a diagram showing another example of PDCCH DMRS to which FD-OCC is applied. Fig. 5 is a diagram showing another example of PDCCH DMRS to which FD-OCC is applied. Fig. 6 is a diagram showing an example of PDCCH DMRS to which TD-OCC is applied. Fig. 7 is a diagram showing another example of PDCCH DMRS to which the TD-OCC is applied. Fig. 8 is a diagram showing an example of PDCCH DMRS to which FD-OCC and TD-OCC are applied. Fig. 9 is a diagram showing another example of PDCCH DMRS to which FD-OCC and TD-OCC are applied. Fig. 10 is a diagram showing an example of PDCCH DMRS to which FDM is applied. Fig. 11 is a diagram showing another example of PDCCH DMRS to which FDM is applied. Fig. 12 is a diagram showing an example of PDCCH DMRS to which TDM is applied. Fig. 13 is a diagram showing another example of PDCCH DMRS to which TDM is applied. Fig. 14A and 14B are diagrams showing an example of an OCC sequence. FIG. 15 is a diagram showing another example of the OCC sequence. Fig. 16A and 16B are diagrams showing other examples of OCC sequences. FIG. 17 is a diagram showing another example of the OCC sequence. Fig. 18 is a diagram showing another example of the OCC sequence. Fig. 19 is a diagram showing an example of transmission power of PDCCH/DMRS according to the third embodiment. Fig. 20 is a diagram showing an example of a schematic configuration of a radio communication system according to an embodiment. Fig. 21 is a diagram showing an example of a configuration of a base station according to an embodiment. Fig. 22 is a diagram showing an example of a configuration of a user terminal according to an embodiment. Fig. 23 is a diagram showing an example of a hardware configuration of a base station and a user terminal according to an embodiment. Fig. 24 is a diagram showing an example of a vehicle according to an embodiment. Detailed Description (Minimum quality assurance in future Wireless communication systems) In existing wireless communication systems (e.g., up to rel. 15-17), mobile communication using public networks