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EP-4742715-A1 - TERMINAL AND WIRELESS COMMUNICATION METHOD

EP4742715A1EP 4742715 A1EP4742715 A1EP 4742715A1EP-4742715-A1

Abstract

According to one aspect disclosed herein, there is provided a terminal including: a control unit that generates support reporting information for reporting that a plurality of functions related to coverage expansion are supported or request information for requesting the functions; and a transmission unit that transmits the support reporting information or the request information on a single channel.

Inventors

  • ECHIGO, Haruhi
  • SHIBAIKE, Naoya
  • OKANO, Mayuko
  • NAGATA, SATOSHI

Assignees

  • NTT DOCOMO, INC.

Dates

Publication Date
20260513
Application Date
20230706

Claims (5)

  1. A terminal comprising: a control section that generates support report information for reporting that the terminal supports a plurality of functions related to coverage enhancement or request information for requesting the functions; and a transmission section that transmits the support report information or the request information via one channel.
  2. The terminal according to claim 1, wherein, the functions related to the coverage enhancement are functions related to repetition, the control section generates support report information for reporting that the terminal supports the functions related to repetition or request information for requesting the functions; and the transmission section transmits the support report information or the request information via one channel.
  3. The terminal according to claim 2, wherein the control section determines whether to transmit the support report information or the request information based on a magnitude relationship between a level of a received signal and a threshold.
  4. The terminal according to claim 2, wherein the control section determines whether to transmit the support report information or the request information depending on whether the terminal supports each of the functions.
  5. A radio communication method comprising: generating, by a terminal, support report information for reporting that the terminal supports a plurality of functions related to coverage enhancement or request information for requesting the functions; and transmitting, by the terminal, the support report information or the request information via one channel.

Description

Technical Field The present disclosure relates to a terminal and a radio communication method. Background Art The 3rd Generation Partnership Project (3GPP) has standardized a 5th generation mobile communication system (also referred to as 5G, New Radio (NR), or Next Generation (NG)), and is further standardizing a next generation system called Beyond 5G, 5G Evolution, or 6G. For example, in 3GPP Release-17, a work item related to coverage enhancement (CE) in NR has been agreed (Non-Patent Literature (hereinafter, referred to as NPL) 1). Specifically, a specification of PUSCH repetition scheduled based on RAR UL grant or DCI scrambled with TC-RNTI is being studied. Note that the RAR is an abbreviation for a random access response. The DCI is an abbreviation for downlink control information. The TC-RNTI is an abbreviation for a temporary cell radio network temporary identifier. PUSCH is an abbreviation for a physical uplink shared channel. Citation List Non-Patent Literature NPL 1 "New WID on NR Coverage Enhancements," RP-202928, 3GPP TSG RAN Meeting #90e, 3GPP, December 2020NPL 2 "Final Feature Lead Summary on Support of Type A PUSCH Repetitions for Msg3", R1-2106247, 3GPP TSG RAN WG1 #105-e, 3GPP, May 2021 Summary of Invention A system capable of coverage enhancement of 6G needs to be designed to have a higher potential for various future use cases without impairing performance. According to an aspect of the present disclosure, there is provided a terminal including: a control section that generates support report information for reporting that the terminal supports a plurality of functions related to coverage enhancement or request information for requesting the functions; and a transmission section that transmits the support report information or the request information via one channel. Brief Description of Drawings FIG. 1 is a schematic diagram illustrating a radio communication system according to an embodiment of the present disclosure;FIG. 2 is a diagram illustrating an example of frequency ranges used in the radio communication system;FIG. 3 is a diagram illustrating examples of configurations of a radio frame, a sub frame, and slots used in the radio communication system;FIG. 4 is a sequence diagram illustrating a contention based random access procedure;FIG. 5 is a sequence diagram illustrating a contention free random access procedure;FIG. 6 is a diagram for describing repetition before and after initial connection;FIG. 7 is a diagram illustrating an example of a TDRA table according to an embodiment of the present disclosure;FIG. 8 is a block diagram illustrating a functional configuration of a base station (gNB) according to an example of the present disclosure;FIG. 9 is a block diagram illustrating a functional configuration of a terminal (UE) according to an embodiment of the present disclosure;FIG. 10 is a block diagram illustrating a hardware configuration of the base station and the terminal according to an embodiment of the present disclosure; andFIG. 11 is a block diagram illustrating a hardware configuration of a vehicle according to an embodiment of the present disclosure. Description of Embodiments Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Note that the embodiments described below are merely examples, and the embodiments to which the present disclosure is applied are not limited to the following embodiments. Terms used in 5G New Radio (NR), such as a synchronization signal (SS), a primary SS (PSS), a secondary SS (SSS), a physical broadcast channel (PBCH), a physical random access channel (PRACH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), and a physical uplink shared channel (PUSCH), are used in an embodiment of the present disclosure described below. This is for the sake of convenience in description, and the same signals, functions, and the like may be called by other names. In addition, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, and the like. Note that, even though the signal used in NR, it is not necessarily explicitly referred to as "NR-". Further, in an embodiment of the present disclosure, the duplex method may be a time division duplex (TDD) method, a frequency division duplex (FDD) method, or another method (for example, a flexible duplex method), when there is no specific limitation stated. Furthermore, in an embodiment of the present disclosure, the term "configured" with respect to a radio parameter or the like may refer to a predetermined value being preconfigured, or it may refer to a radio parameter indicated from a base station or a terminal being configured. In addition, in the following description, the notation "/" may mean "and/or" unless otherwise specified. <Radio Communication System> FIG. 1 is a diagram illustrating an example of radio communication system 10 according