WO2023139942A1

WO2023139942A1 - Terminal, base station, and communication method

Info

Publication number: WO2023139942A1
Application number: PCT/JP2022/044512
Authority: WO
Inventors: 真由子岡野; 尚哉芝池; 浩樹原田
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2022-01-21
Filing date: 2022-12-02
Publication date: 2023-07-27

Abstract

This terminal comprises: a reception unit for receiving, through a downlink, control information including a scheduling of a shared channel of another cell or a triggering of a reference signal of the other cell; and a transmission unit for transmitting, through an uplink, terminal capacity information indicating the limitation between the cell to which the control information is transmitted and the cell which has the shared channel or the reference signal.

Description

Terminal, base station and communication method

The present invention relates to terminals, base stations and communication methods in wireless communication systems.

　In NR (New Radio) (also known as "5G"), the successor system to LTE (Long Term Evolution), technologies are being studied that satisfy requirements such as a large-capacity system, high-speed data transmission speed, low latency, simultaneous connection of many terminals, low cost, and power saving (for example, Non-Patent Document 1).

　NR Release 17 is considering using a higher frequency band than previous releases (eg, Non-Patent Document 2). For example, in the frequency band from 52.6 GHz to 71 GHz, applicable numerology including subcarrier spacing, channel bandwidth, etc., physical layer design, possible obstacles in actual wireless communication, etc. are being studied.

There is a problem that the specifications for applying wireless communication systems to high frequency bands are not defined. For example, the signaling of terminal capabilities for cross-carrier scheduling involving FR2-2 cells is unclear. Also, cross-carrier A-CSI-RS triggering involving FR2-2 cells is similarly unclear.

The present invention has been made in view of the above points, and aims to apply a wireless communication system to a high frequency band.

According to the disclosed technique, a terminal is provided that includes a receiving unit that receives control information including scheduling of shared channels of different cells or triggering of reference signals of different cells on the downlink, and a transmitting unit that transmits terminal capability information indicating restrictions between a cell in which the control information is transmitted and a cell of the shared channel or the reference signal in the uplink.

According to the disclosed technique, a technique is provided that enables a wireless communication system to be applied to a high frequency band.

1 is a first diagram for explaining a radio communication system according to an embodiment of the present invention; FIG. FIG. 2 is a second diagram for explaining the radio communication system according to the embodiment of the present invention; FIG. FIG. 4 is a diagram showing an example of bands; FIG. 10 is a diagram showing slot lengths for SCS; FIG. 2 is a diagram for explaining cross-carrier scheduling; FIG. 1 is a diagram showing a basic operation example of a radio communication system; FIG. 1 is a diagram illustrating an example of terminal functions related to conventional cross-carrier scheduling; FIG. FIG. 4 is a first diagram showing an example of terminal functions related to cross-carrier scheduling according to Example 1 of the embodiment of the present invention; FIG. 4 is a second diagram showing an example of terminal functions related to cross-carrier scheduling according to Example 1 of the embodiment of the present invention; FIG. 4 is a first diagram showing an example of terminal functions related to cross-carrier A-CSI-RS triggering according to Example 1 of the embodiment of the present invention; FIG. 4 is a second diagram showing an example of terminal functions related to cross-carrier A-CSI-RS triggering according to Example 1 of the embodiment of the present invention; It is a figure showing an example of functional composition of base station 10 in an embodiment of the invention. 2 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention; FIG. 2 is a diagram showing an example of hardware configuration of base station 10 or terminal 20 according to an embodiment of the present invention; FIG. It is a figure showing an example of composition of vehicles 2001 in an embodiment of the invention.

Embodiments of the present invention will be described below with reference to the drawings. In addition, the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

For the operation of the wireless communication system according to the embodiment of the present invention, existing technology may be used as appropriate. The existing technology is, for example, existing NR or LTE, but is not limited to existing NR or LTE. In addition, the term “LTE” used in this specification has a broad meaning including LTE-Advanced and LTE-Advanced and subsequent systems (eg, NR) unless otherwise specified.

In addition, in the embodiment of the present invention described below, SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), Terms such as PUCCH (Physical Uplink Control Channel) and PUSCH (Physical Uplink Shared Channel) are used. This is for convenience of description, and signals, functions, etc. similar to these may be referred to by other names. Also, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, and so on. However, even a signal used for NR is not necessarily specified as "NR-".

Also, in the embodiment of the present invention, the duplex system may be the TDD (Time Division Duplex) system, the FDD (Frequency Division Duplex) system, or other systems (for example, Flexible Duplex, etc.).

Further, in the embodiment of the present invention, "configuring" wireless parameters and the like may mean that predetermined values are set in advance (Pre-configure), or that wireless parameters notified from a base station or a terminal are set.

FIG. 1 is a first diagram for explaining the radio communication system according to the embodiment of the present invention. A radio communication system according to an embodiment of the present invention includes a base station 10 and a terminal 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is an example, and there may be a plurality of each.

The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. A physical resource of a radio signal is defined in the time domain and the frequency domain. The time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or resource blocks. Also, a TTI (Transmission Time Interval) in the time domain may be a slot, or a TTI may be a subframe.

The base station 10 can perform carrier aggregation in which multiple cells (multiple CCs (component carriers)) are bundled and communicated with the terminal 20 . In carrier aggregation, one PCell (primary cell) and one or more SCells (secondary cells) are used.

The base station 10 transmits a synchronization signal, system information, etc. to the terminal 20. Synchronization signals are, for example, NR-PSS and NR-SSS. System information is transmitted, for example, on NR-PBCH or PDSCH, and is also called broadcast information. As shown in FIG. 1, the base station 10 transmits control signals or data to the terminal 20 on DL (Downlink) and receives control signals or data from the terminal 20 on UL (Uplink). Here, what is transmitted on control channels such as PUCCH and PDCCH is called a control signal, and what is transmitted on a shared channel such as PUSCH and PDSCH is called data.

The terminal 20 is a communication device with a wireless communication function, such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module. As shown in FIG. 1, the terminal 20 receives a control signal or data from the base station 10 on the DL and transmits the control signal or data to the base station 10 on the UL, thereby using various communication services provided by the wireless communication system. Note that the terminal 20 may be called UE, and the base station 10 may be called gNB.

FIG. 2 is a second diagram for explaining the wireless communication system according to the embodiment of the present invention. FIG. 2 shows a configuration example of a radio communication system when dual connectivity (DC) is performed. As shown in FIG. 2, a base station 10A serving as a master node (MN: Master Node) and a base station 10B serving as a secondary node (SN: Secondary Node) are provided. The base station 10A and the base station 10B are connected to the core network 30 respectively. Terminal 20 can communicate with both base station 10A and base station 10B.

A cell group provided by the MN base station 10A is called a master cell group (MCG), and a cell group provided by the SN base station 10B is called a secondary cell group (SCG). In dual connectivity, an MCG is composed of one PCell and 0 or more SCells, and an SCG is composed of one PSCell (Primary SCG Cell) and 0 or more SCells.

Note that dual connectivity may be a communication method using two communication standards, and any communication standards may be combined. For example, the combination may be either NR and 6G standard or LTE and 6G standard. Also, dual connectivity may be a communication method using three or more communication standards, and may be called by other names different from dual connectivity.

The processing operation in the present embodiment may be executed with the system configuration shown in FIG. 1, may be executed with the system configuration shown in FIG. 2, or may be executed with a system configuration other than these.

　In 3GPP (registered trademark) standardization, support for enhanced IoT (Internet of Things) and URLLC (Ultra-reliable and low latency communication) in NR is being considered.

(About frequency band)
FIG. 3 is a diagram showing an example of bands. FIG. 3 shows an example of frequency bands used in NR. As frequency bands (which may be called frequency ranges) in NR, there are three frequency bands: FR1 (0.41 GHz to 7.125), FR2-1 (24.25 GHz to 52.6 GHz), and FR2-2 (52.6 GHz to 71 GHz). FR2-1 and FR2-2 may be collectively called FR2. As shown in FIG. 3, FR1 supports SCS of 15 kHz, 30 kHz, and 60 kHz, and a bandwidth (BW) of 5 to 100 MHz. FR2-1 supports 60 kHz, 120 kHz and 240 kHz (SSB only) as SCS, and 50-400 MHz as bandwidth (BW). FR2-2 is assumed to support SCS greater than 240 kHz. However, these support situations are just examples.

In the radio communication system according to the present embodiment, it is assumed that the frequency bands FR2-1 and FR2-2 are used in addition to FR1.

For example, the radio communication system according to the present embodiment supports CA (and DC) between FR1 and FR2-2. For example, in CA or DC between FR1 and FR2-2, for example, the following three band combinations may be used: (1) n79+Nx, (2) n77+Nx, (3) n41+Nx. Here, Nx is, for example, the 57-71 GHz unlicensed band and the 66-71 GHz licensed band.

　It is assumed that a larger SCS (480 kHz, 960 kHz, etc.) will be introduced in the band operation of 52.6 GHz or higher.

FIG. 4 is a diagram showing slot lengths for SCS. As shown in FIG. 4, the larger the SCS, the shorter the symbol length/slot length.

In multi-cell operation, it is conceivable that the difference in symbol length/slot length between carriers will increase depending on the SCS of each carrier.

Fig. 5 shows an example of a situation where the difference in symbol length/slot length between carriers becomes large. FIG. 5 is a diagram for explaining cross-carrier scheduling. The terminal 20 receives the PDCCH on CC#1, and receives the PDSCH scheduled on that PDCCH on CC#2.

In the example of FIG. 5, the numerology of CC#2 is greater than the numerology of CC#1, and as shown in FIG. 5, the slot length of CC#2 is shorter than the slot length of CC#1, and the difference between them is large. If the difference between numerology is large in this way, the terminal operation becomes complicated, and the cross-carrier scheduling gain may deteriorate.

Therefore, in cross-carrier scheduling from the FR1 or FR2-1 cell to the FR2-2 cell or from the FR2-2 cell to the FR1 or FR2-1 cell, it is being considered to limit the size of the difference between the PDCCH carrier numerology (μPDCCH) and the PDSCH carrier numerology (μPDSCH) according to terminal capabilities.

(basic operation example)
A basic operation example of the radio communication system will be described.

FIG. 6 is a diagram showing a basic operation example of the wireless communication system. The terminal 20 transmits capability information to the base station 10 (step S101). Note that step S101 may not be performed.

The base station 10 transmits setting information to the terminal 20 (step S102. This setting information includes, for example, settings for PDCCH, PDSCH, PUCCH, and PUSCH.

The terminal 20 receives PDCCH in a certain cell (step S103). PDCCH includes scheduling information of PDSCH in another cell (carrier). The terminal 20 then receives the PDSCH in the scheduled resource (step S104). The terminal 20 transmits feedback information for data reception by the PDSCH on the PUCCH (step S105).

(Conventional problems)
FIG. 7 is a diagram showing an example of terminal functions related to conventional cross-carrier scheduling. In the conventional terminal function specifications, cross-carrier scheduling in various terminal functions related to carrier numerology is defined as a terminal function for MR-DC (Multi-RAT Dual Connectivity) / CA (Carrier Aggregation) extension, as shown in FIG.

However, in the conventional specifications, the details of terminal function signaling related to cross-carrier scheduling including FR2-2 cells are unknown.

Also, the details of cross-carrier A-CSI-RS triggering involving FR2-2 cells are similarly unknown.

(Overview of this embodiment)
Hereinafter, in order to solve the above-mentioned problems, properly considering the terminal functions, from the FR1 / FR2-1 / FR2-2 band to the FR2-2 band cross-carrier scheduling / cross-carrier A-CSI-RS triggering, or cross-carrier scheduling / cross-carrier A-CSI-RS triggering from the FR2-2 band to the FR1 / FR2-1 / FR2-2 band. Examples 1 and 2 will be described below as specific examples.

(Example 1)
In this example, the signaling of terminal capabilities for cross-carrier scheduling involving FR2-2 cells is described.

<Option 1>
Terminal 20 can specify PDCCH and PDSCH/PUSCH SCS limits for cross-carrier scheduling that includes the FR2-2 band, and the limits may vary depending on terminal capabilities.

This restriction may be applied when the CC to be scheduled and/or the CC to be scheduled is a carrier of the FR2-2 band.

This restriction may be applied when the SCS of the CC to be scheduled and/or the CC to be scheduled is a carrier of 120/480/960 kHz SCS.

<Option 2>
The terminal 20 may report whether it supports cross-carrier scheduling from the FR1/FR2-1/FR2-2 band to the FR2-2 band and/or cross-carrier scheduling from the FR2-2 band to the FR1/FR2-1/FR2-2 band through terminal capability signaling.

The terminal 20 may report the terminal capability according to the combination of the SCS of the CC to be scheduled and the CC to be scheduled. For example, terminal 20 may report terminal capabilities as shown in Example 1 or Example 2 below.

<Example 1>
If |μPDCCH−μPDSCH/μPUSCH|≦3, the terminal 20 supports cross-carrier scheduling from the FR1/FR2-1/FR2-2 band to the FR2-2 band and/or cross-carrier scheduling from the FR2-2 band to the FR1/FR2-1/FR2-2 band.

If |μPDCCH−μPDSCH/μPUSCH|≦4, the terminal 20 may report whether or not to support cross-carrier scheduling from the FR1/FR2-1/FR2-2 band into the FR2-2 band and/or cross-carrier scheduling from the FR2-2 band to the FR1/FR2-1/FR2-2 band.

If |μPDCCH−μPDSCH/μPUSCH|≦5, the terminal 20 may report whether or not to support cross-carrier scheduling from the FR1/FR2-1/FR2-2 band into the FR2-2 band and/or cross-carrier scheduling from the FR2-2 band to the FR1/FR2-1/FR2-2 band.

When |μPDCCH−μPDSCH/μPUSCH|≦6 (that is, when there is no SCS restriction), the terminal 20 may report whether or not to support cross-carrier scheduling from the FR1/FR2-1/FR2-2 band to the FR2-2 band or cross-carrier scheduling from the FR2-2 band to the FR1/FR2-1/FR2-2 band.

<Example 2>
Terminal 20 may report the X value to support cross-carrier scheduling from the FR2-2 band to the FR1/FR2-1/FR2-2 band. Here, X is a value defined as |μPDCCH−μPDSCH/μPUSCH|≦X. Candidate values for X may be 3, 4, 5 or 6.

The terminal 20 may report the X value for supporting cross-carrier scheduling from the FR1/FR2-1/FR2-2 band to the FR2-2 band. Here, X is a value defined as |μPDCCH−μPDSCH/μPUSCH|≦X. Candidate values for X may be 3, 4, 5 or 6.

Whether the terminal 20 supports either or both of cross-carrier scheduling from the FR1/FR2-1/FR2-2 band to the FR2-2 band and cross-carrier scheduling from the FR2-2 band to the FR1/FR2-1/FR2-2 band may be reported in the same FG (Feature Group) or different FGs.

The terminal 20 may report the terminal capabilities indicated in option 2 in the same FG or different FGs depending on the value of the SCS combination for scheduling the CC or the value limiting |μPDCCH-μPDSCH/μPUSCH|.

<Option 3>
Terminal 20 may report whether it supports cross-carrier scheduling from small SCS to large SCS and/or cross-carrier scheduling from large SCS to small SCS, including SCS at 480 kHz and/or 960 kHz, via terminal capability signaling.

The terminal 20 may report the terminal capability according to the SCS restrictions of the CC to be scheduled and the CC to be scheduled. For example, terminal 20 may report terminal capabilities as shown in Example 1 or Example 2 below.

<Example 1>
If |μPDCCH−μPDSCH/μPUSCH|≦3, terminal 20 may report whether it supports cross-carrier scheduling from small SCS to large SCS and/or cross-carrier scheduling from large SCS to small SCS.

If |μPDCCH−μPDSCH/μPUSCH|≦4, terminal 20 may report whether it supports cross-carrier scheduling from small SCS to large SCS and/or cross-carrier scheduling from large SCS to small SCS.

If |μPDCCH−μPDSCH/μPUSCH|≦5, terminal 20 may report whether or not it supports cross-carrier scheduling from small SCS to large SCS and/or cross-carrier scheduling from large SCS to small SCS.

If |μPDCCH−μPDSCH/μPUSCH|≦6 (that is, if there is no SCS restriction), terminal 20 may report whether it supports cross-carrier scheduling from small SCS to large SCS and/or cross-carrier scheduling from large SCS to small SCS.

<Example 2>
Terminal 20 may report the X value to support cross-carrier scheduling from small SCS to large SCS. Here, X is a value defined as |μPDCCH−μPDSCH/μPUSCH|≦X. Candidate values for X may be 3, 4, 5 or 6.

The terminal 20 may report the X value for supporting cross-carrier scheduling from large SCS to small SCS. Here, X is a value defined as |μPDCCH−μPDSCH/μPUSCH|≦X. Candidate values for X may be 3, 4, 5 or 6.

The terminal 20 may report in the same FG (Feature Group) or different FGs whether or not to support either or both of cross-carrier scheduling from a small SCS to a large SCS and cross-carrier scheduling from a large SCS to a small SCS.

The terminal 20 may report the terminal capabilities indicated in option 3 in the same FG or different FGs depending on the value of the SCS combination for scheduling the CC or the value limiting |μPDCCH-μPDSCH/μPUSCH|.

<Option 4>
Terminal 20 may report the maximum or minimum value it supports as the number of unicast DCIs per N consecutive slots for cross-carrier scheduling involving FR2-2 cells via terminal capability signaling.

The number X of unicast DCIs may differ depending on the combination of the CC to be scheduled and the SCS of the CC to be scheduled.

For example, X may be a value based on the pair (SCS of scheduling CC, SCS of scheduled CC). Specifically, for (15,960), (15,480), (30,960), (30,480), (60,960), X = {1,2,4,8}, (60,480), (120,960), (120,480) for X = {1,2,4}, and for (480,960), X = {2}. You can

Also, N may differ depending on the combination of the SCS of the CC to be scheduled and the CC to be scheduled.

N may be 1 for cross-carrier scheduling from small SCS to large SCS.

For example, N may be a value based on a pair of (SCS of scheduling CC, SCS of scheduled CC). Specifically, for (960, 480), N = 2, (480, 120), N = 4, (480, 60), (960, 120), N = 8, (480, 30), (960, 60), N = 16, (480, 15), (960, 30), N = 32, (960, 15), N=64 may be used.

The terminal 20 may report the terminal capabilities indicated in option 4 in the same FG or different FGs depending on the value of the SCS combination for scheduling the CC or the value limiting |μPDCCH-μPDSCH/μPUSCH|.

FIG. 8 is a first diagram showing an example of terminal functions related to cross-carrier scheduling according to Example 1 of the embodiment of the present invention. FIG. 8 shows an example of reporting in the same FG whether or not the limitation of |μPDCCH-μPDSCH/μPUSCH| is supported.

For example, FG(24-X) is a FG for reporting terminal capabilities of downlink and/or uplink cross-carrier scheduling in different SCSs, including SCSs of 480 kHz and/or 960 kHz.

The terminal 20 may report the value of X shown in option 2 or option 3 in FG (24-X). Also, the terminal 20 may report the value of N indicated in option 4 in FG(24-X).

Also, FG (24-Y) is a FG for reporting processing up to X unicast DCI scheduling of downlink or uplink per scheduled CC including SCS of 480 kHz and/or 960 kHz.

The terminal 20 may report the value of X shown in Option 4 in FG (24-Y).

FIG. 9 is a second diagram showing an example of terminal functions related to cross-carrier scheduling according to Example 1 of the embodiment of the present invention. FIG. 9 shows an example in which different FGs report whether or not |μPDCCH−μPDSCH/μPUSCH| restrictions are supported.

For example, the terminal 20 may report support in the case of |μPDCCH-μPDSCH/μPUSCH|≤3 as indicated in option 2 or option 3 in FG (24-Xa).

The terminal 20 may report support in the case of |μPDCCH-μPDSCH/μPUSCH|≤4 as indicated in option 2 or option 3 in FG (24-Xb).

The terminal 20 may report support in the case of |μPDCCH-μPDSCH/μPUSCH|≤5 as indicated in Option 2 or Option 3 in FG (24-Xc).

The terminal 20 may report support in the case of |μPDCCH-μPDSCH/μPUSCH|≤6 as indicated in option 2 or option 3 in FG (24-Xd).

(Example 2)
In this example, the signaling of terminal capabilities for cross-carrier A-CSI-RS triggering involving FR2-2 cells is described.

<Option 2>
Terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from the FR1/FR2-1/FR2-2 band to the FR2-2 band and/or cross-carrier A-CSI-RS triggering from the FR2-2 band to the FR1/FR2-1/FR2-2 band through terminal capability signaling.

The terminal 20 may report the terminal function according to the SCS combination of the PDCCH cell and/or the A-CSI-RS cell. For example, terminal 20 may report terminal capabilities as shown in Example 1 or Example 2 below. Hereinafter, the numerology of the PDCCH carrier is .mu.PDCCH, and the numerology of the A-CSI-RS carrier is .mu.CSI-RS.

<Example 1>
If |μPDCCH-(μCSI-RS)|≦3, the terminal 20 may report whether or not to support cross-carrier A-CSI-RS triggering from the FR1/FR2-1/FR2-2 band to the FR2-2 band and/or cross-carrier A-CSI-RS triggering from the FR2-2 band to the FR1/FR2-1/FR2-2 band.

If |μPDCCH-(μCSI-RS)|≤4, the terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from the FR1/FR2-1/FR2-2 band into the FR2-2 band and/or cross-carrier A-CSI-RS triggering from the FR2-2 band to the FR1/FR2-1/FR2-2 band.

If |μPDCCH-(μCSI-RS)|≤5, the terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from the FR1/FR2-1/FR2-2 band into the FR2-2 band and/or cross-carrier A-CSI-RS triggering from the FR2-2 band to the FR1/FR2-1/FR2-2 band.

If |μPDCCH-(μCSI-RS)|≤6 (that is, if there is no SCS restriction), the terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from the FR1/FR2-1/FR2-2 band to the FR2-2 band or cross-carrier A-CSI-RS triggering from the FR2-2 band to the FR1/FR2-1/FR2-2 band.

<Example 2>
Terminal 20 may report the X value to support cross-carrier A-CSI-RS triggering from the FR2-2 band to the FR1/FR2-1/FR2-2 band. where X is a value defined as |μPDCCH-(μCSI-RS)|≦X. Candidate values for X may be 3, 4, 5 or 6.

The terminal 20 may report the X value to support cross-carrier A-CSI-RS triggering from the FR1/FR2-1/FR2-2 band to the FR2-2 band. where X is a value defined as |μPDCCH-(μCSI-RS)|≦X. Candidate values for X may be 3, 4, 5 or 6.

The terminal 20 may report whether or not to support either or both of cross-carrier A-CSI-RS triggering from the FR1/FR2-1/FR2-2 band to the FR2-2 band and cross-carrier A-CSI-RS triggering from the FR2-2 band to the FR1/FR2-1/FR2-2 band in the same FG (Feature Group) or different FGs.

The terminal 20 may report the terminal functions indicated in Option 2 in the same FG or in different FGs depending on the value of the SCS combination of the PDCCH cell and the A-CSI-RS cell or the value limiting |μPDCCH-(μCSI-RS)|.

<Option 3>
Terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from small SCS to large SCS and/or cross-carrier A-CSI-RS triggering from large SCS to small SCS, including SCS at 480 kHz and/or 960 kHz, via terminal capability signaling.

The terminal 20 may report the terminal function according to the SCS combination of the PDCCH cell and/or the A-CSI-RS cell. For example, terminal 20 may report terminal capabilities as shown in Example 1 or Example 2 below.

<Example 1>
If |μPDCCH−(μCSI-RS)|≦3, terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from small SCS to large SCS and/or cross-carrier A-CSI-RS triggering from large SCS to small SCS.

If |μPDCCH−(μCSI-RS)|≦4, terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from small SCS to large SCS and/or cross-carrier A-CSI-RS triggering from large SCS to small SCS.

If |μPDCCH−(μCSI-RS)|≦5, terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from small SCS to large SCS and/or cross-carrier A-CSI-RS triggering from large SCS to small SCS.

If |μPDCCH-(μCSI-RS)|≤6 (i.e., no SCS restriction), terminal 20 may report whether it supports cross-carrier A-CSI-RS triggering from small SCS to large SCS and/or cross-carrier A-CSI-RS triggering from large SCS to small SCS.

<Example 2>
Terminal 20 may report the X value to support cross-carrier A-CSI-RS triggering from small SCS to large SCS. where X is a value defined as |μPDCCH-(μCSI-RS)|≦X. Candidate values for X may be 3, 4, 5 or 6.

The terminal 20 may report the X value to support cross-carrier A-CSI-RS triggering from large SCS to small SCS. where X is a value defined as |μPDCCH-(μCSI-RS)|≦X. Candidate values for X may be 3, 4, 5 or 6.

Terminal 20 may report whether or not to support either or both of cross-carrier A-CSI-RS triggering from a small SCS to a large SCS and cross-carrier A-CSI-RS triggering from a large SCS to a small SCS in the same FG (Feature Group) or different FGs.

The terminal 20 may report the terminal functions indicated in option 3 in the same FG or different FGs depending on the value of the SCS combination of the PDCCH cell and the A-CSI-RS cell or the value limiting |μPDCCH-(μCSI-RS)|.

FIG. 10 is a first diagram showing an example of terminal functions related to cross-carrier A-CSI-RS triggering according to Example 1 of the embodiment of the present invention. FIG. 10 shows an example of reporting in the same FG whether or not the limitation of |μPDCCH-(μCSI-RS)| is supported.

For example, FG(24-X) is a FG for reporting terminal capabilities of downlink and/or uplink cross-carrier A-CSI-RS triggering in different SCSs, including 480 kHz and/or 960 kHz SCSs.

The terminal 20 may report the value of X shown in option 2 or option 3 in FG (24-X).

FIG. 11 is a second diagram showing an example of terminal functions related to cross-carrier A-CSI-RS triggering according to Example 1 of the embodiment of the present invention. FIG. 11 shows an example of reporting in different FGs whether or not the limitation of |μPDCCH-(μCSI-RS)| is supported.

For example, the terminal 20 may report support in the case of |μPDCCH-(μCSI-RS)|≤3 as shown in option 2 or option 3 in FG(24-Xa).

The terminal 20 may report support in the case of |μPDCCH-(μCSI-RS)|≦4 in FG (24-Xb), as indicated in option 2 or option 3.

The terminal 20 may report support in the case of |μPDCCH-(μCSI-RS)|≤5 in FG (24-Xc), as indicated in option 2 or option 3.

The terminal 20 may report support in the case of |μPDCCH-(μCSI-RS)|≤6 in FG(24-Xd), as indicated in option 2 or option 3.

The terminal functions reported in each of the above-described embodiments may be reported in the same FG or may be reported in different FGs.

(Device configuration)
Next, functional configuration examples of the base station 10 and the terminal 20 that execute the processes and operations described above will be described. The base stations 10 and terminals 20 contain the functionality to implement the embodiments described above. However, each of the base station 10 and the terminal 20 may have only the functions proposed in any of the embodiments.

<Base station 10>
FIG. 12 is a diagram showing an example of the functional configuration of the base station 10. As shown in FIG. As shown in FIG. 12, the base station 10 has a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140. The functional configuration shown in FIG. 12 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary. The transmitting unit 110 and the receiving unit 120 may be called a communication unit.

The transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal. The receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, higher layer information from the received signals. Also, the transmitting unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DL data, etc. to the terminal 20 . Also, the transmission unit 110 transmits the setting information and the like described in the embodiment.

The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads them from the storage device as necessary. The control unit 140 performs overall control of the base station 10 including control related to signal transmission/reception, for example. It should be noted that the functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110 , and the functional unit related to signal reception in control unit 140 may be included in receiving unit 120 . Also, the transmitting unit 110 and the receiving unit 120 may be called a transmitter and a receiver, respectively.

<Terminal 20>
FIG. 13 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. As shown in FIG. 13 , the terminal 20 has a transmitter 210 , a receiver 220 , a setter 230 and a controller 240 . The functional configuration shown in FIG. 13 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional division and the names of the functional units may be arbitrary. The transmitting unit 210 and the receiving unit 220 may be called a communication unit.

The transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal. Also, the transmitting unit 210 transmits HARQ-ACK, and the receiving unit 220 receives the setting information and the like described in the embodiment.

The setting unit 230 stores various types of setting information received from the base station 10 by the receiving unit 220 in the storage device, and reads them from the storage device as necessary. The setting unit 230 also stores preset setting information. The control unit 240 performs overall control of the terminal 20 including control related to signal transmission/reception. It should be noted that the functional unit related to signal transmission in control unit 240 may be included in transmitting unit 210 , and the functional unit related to signal reception in control unit 240 may be included in receiving unit 220 . Also, the transmitting section 210 and the receiving section 220 may be called a transmitter and a receiver, respectively.

The terminal or base station of this embodiment may be configured as a terminal or base station shown in each section below. Also, the following communication method may be implemented.

<Configuration regarding this embodiment>
(Section 1)
a receiving unit for receiving downlink control information including scheduling of shared channels of different cells or triggering of reference signals of different cells;
a transmitting unit configured to transmit, in an uplink, terminal capability information indicating a restriction between a cell in which the control information is transmitted and a cell of the shared channel or the reference signal;
terminal.
(Section 2)
The terminal capability information is information indicating restrictions on subcarrier intervals between the cell in which the control information is transmitted and the cell of the shared channel in scheduling of shared channels of different cells.
A terminal according to Clause 1.
(Section 3)
The terminal capability information, in the triggering of the reference signal of different cells, the cell in which the control information is transmitted, the information indicating the limit of the subcarrier interval between the cell of the reference signal,
A terminal according to Clause 1.
(Section 4)
a receiving unit that receives from a terminal terminal capability information indicating a limit between a cell in which control information is transmitted and a cell of a shared channel or reference signal;
A transmission unit that transmits control information including scheduling of shared channels of different cells or triggering of reference signals of different cells to the terminal based on the terminal capability information,
base station.
(Section 5)
receiving in the downlink control information comprising scheduling of shared channels of different cells or triggering of reference signals of different cells;
transmitting, on the uplink, terminal capability information indicating a restriction between a cell in which the control information is transmitted and a cell of the shared channel or the reference signal;
Communication method.

Any of the above configurations provides a technology that enables a wireless communication system to be applied to high frequency bands. According to the second term, terminal capability signaling for cross-carrier scheduling can be realized. According to the third term, terminal capability signaling for cross-carrier A-CSI-RS triggering can be realized.

(Hardware configuration)
The block diagrams (FIGS. 12 and 13) used to describe the above embodiments show blocks in functional units. These functional blocks (components) are implemented by any combination of at least one of hardware and software. Also, the method of realizing each functional block is not particularly limited. That is, each functional block may be implemented using one device that is physically or logically coupled, or may be implemented using two or more physically or logically separated devices that are directly or indirectly (e.g., wired, wireless, etc.) connected and implemented using these multiple devices. A functional block may be implemented by combining software in the one device or the plurality of devices.

Functions include, but are not limited to, determining, determining, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, transmitting, outputting, accessing, resolving, selecting, selecting, establishing, comparing, assuming, expecting, assuming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, and the like. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. In either case, as described above, the implementation method is not particularly limited.

For example, the base station 10, the terminal 20, etc. according to the embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 14 is a diagram illustrating an example of hardware configurations of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and terminal 20 described above may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

In the following explanation, the term "apparatus" can be read as a circuit, device, unit, or the like. The hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without some devices.

Each function of the base station 10 and the terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and storage device 1002, causing the processor 1001 to perform calculations, controlling communication by the communication device 1004, and controlling at least one of reading and writing data in the storage device 1002 and auxiliary storage device 1003.

The processor 1001, for example, operates an operating system and controls the entire computer. The processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like. For example, the control unit 140 , the control unit 240 and the like described above may be implemented by the processor 1001 .

In addition, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. For example, control unit 140 of base station 10 shown in FIG. 12 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 . Also, for example, the control unit 240 of the terminal 20 shown in FIG. 13 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001 . Although it has been explained that the above-described various processes are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. FIG. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.

The storage device 1002 is a computer-readable recording medium, and may be composed of at least one of, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), and the like. The storage device 1002 may also be called a register, cache, main memory (main storage device), or the like. The storage device 1002 can store executable programs (program code), software modules, etc. for implementing the communication method according to an embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, and may be composed of at least one of, for example, optical discs such as CD-ROMs (Compact Disc ROM), hard disk drives, flexible discs, magneto-optical discs (e.g., compact discs, digital versatile discs, Blu-ray (registered trademark) discs), smart cards, flash memories (e.g., cards, sticks, key drives), floppy (registered trademark) discs, magnetic strips, and the like. The storage medium described above may be, for example, a database, server, or other suitable medium including at least one of storage device 1002 and secondary storage device 1003 .

The communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like. The communication device 1004 may include a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transmitting/receiving antenna, an amplifier section, a transmitting/receiving section, a transmission line interface, etc. may be implemented by the communication device 1004 . The transceiver may be physically or logically separate implementations for the transmitter and receiver.

The input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (for example, a touch panel).

Each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between devices.

In addition, the base station 10 and the terminal 20 may be configured including hardware such as microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), FPGAs (Field Programmable Gate Arrays), etc., and part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

A configuration example of the vehicle 2001 is shown in FIG. As shown in FIG. 15, a vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect/embodiment described in the present disclosure may be applied to a communication device mounted on vehicle 2001, and may be applied to communication module 2013, for example.

The driving unit 2002 is configured by, for example, an engine, a motor, or a hybrid of the engine and the motor. The steering unit 2003 includes at least a steering wheel (also referred to as steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

The electronic control unit 2010 is composed of a microprocessor 2031 , a memory (ROM, RAM) 2032 and a communication port (IO port) 2033 . Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010 . The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

Signals from the various sensors 2021 to 2029 include a current signal from the current sensor 2021 that senses the current of the motor, front and rear wheel rotation speed signals acquired by the rotation speed sensor 2022, front and rear wheel air pressure signals acquired by the air pressure sensor 2023, vehicle speed signals acquired by the vehicle speed sensor 2024, acceleration signals acquired by the acceleration sensor 2025, and accelerator pedal depression amount signals acquired by the accelerator pedal sensor 2029. , a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, an obstacle, a vehicle, a pedestrian, etc. obtained by an object detection sensor 2028.

The information service unit 2012 consists of various devices such as car navigation systems, audio systems, speakers, televisions, and radios for providing various types of information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide passengers of the vehicle 2001 with various multimedia information and multimedia services.

The driving support system unit 2030 includes millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence ) Chips, AI processors, and other devices that provide functions to prevent accidents and reduce the driver's driving load, and one or more ECUs that control these devices. In addition, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.

The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via communication ports. For example, the communication module 2013 communicates with the driving unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axle 2009, the microprocessor 2031 and the memory (ROM, RAM) 2032 in the electronic control unit 2010, and the sensors 2021 to 29 provided in the vehicle 2001 through the communication port 2033. to send and receive data.

The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from an external device via wireless communication. Communication module 2013 may be internal or external to electronic control unit 2010 . The external device may be, for example, a base station, a mobile station, or the like.

The communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication. In addition, the communication module 2013 receives input to the electronic control unit 2010, front wheel and rear wheel rotation speed signals acquired by the rotation speed sensor 2022, front and rear wheel air pressure signals acquired by the air pressure sensor 2023, vehicle speed signals acquired by the vehicle speed sensor 2024, acceleration signals acquired by the acceleration sensor 2025, accelerator pedal depression amount signals acquired by the accelerator pedal sensor 2029, and brake pedal acquired by the brake pedal sensor 2026. The amount of depression signal, the operation signal of the shift lever acquired by the shift lever sensor 2027, the detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, etc. are also transmitted to the external device via wireless communication.

The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices, and displays it on the information service unit 2012 provided in the vehicle 2001 . Communication module 2013 also stores various information received from external devices in memory 2032 available to microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axle 2009, the sensors 2021 to 2029, etc. provided in the vehicle 2001.

(Supplement to the embodiment)
Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, modifications, alternatives, replacements, and the like. Although specific numerical examples have been used to facilitate understanding of the invention, these numerical values are merely examples and any appropriate values may be used unless otherwise specified. The division of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be applied to the items described in another item (as long as there is no contradiction). Boundaries of functional or processing units in functional block diagrams do not necessarily correspond to boundaries of physical components. The operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components. As for the processing procedures described in the embodiments, the processing order may be changed as long as there is no contradiction. Although the base station 10 and the terminal 20 have been described using functional block diagrams for convenience of explanation of processing, such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention may be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

In addition, notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods. For example, information is notified by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling), broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof. may be implemented. The RRC signaling may also be called an RRC message, such as an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

Each aspect/embodiment described in the present disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG(x is an integer, decimal)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other suitable systems, and/or next-generation systems that are extended, modified, created, and defined based on these. Also, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G, etc.).

The order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this specification may be changed as long as there is no contradiction. For example, the methods described in this disclosure present elements of the various steps using a sample order, and are not limited to the specific order presented.

A specific operation performed by the base station 10 in this specification may be performed by its upper node in some cases. It is clear that in a network of one or more network nodes with a base station 10, various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and other network nodes other than the base station 10 (e.g., MME or S-GW, etc. are possible, but not limited to these). Although the above example illustrates the case where there is one network node other than the base station 10, the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).

Information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.

Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and the like may be transmitted to another device.

The determination in the present disclosure may be made by a value represented by 1 bit (0 or 1), may be made by a true/false value (Boolean: true or false), or may be made by numerical comparison (for example, comparison with a predetermined value).

Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name.

In addition, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using wired technologies (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and/or wireless technologies (infrared, microwave, etc.), then these wired and/or wireless technologies are included within the definition of transmission medium.

The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

The terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, the channel and/or symbols may be signaling. A signal may also be a message. A component carrier (CC) may also be called a carrier frequency, a cell, a frequency carrier, or the like.

The terms "system" and "network" used in this disclosure are used interchangeably.

In addition, the information, parameters, etc. described in the present disclosure may be represented using absolute values, may be represented using relative values from a predetermined value, or may be represented using other corresponding information. For example, radio resources may be indexed.

The names used for the parameters described above are not restrictive names in any respect. Further, the formulas, etc., using these parameters may differ from those expressly disclosed in this disclosure. The various names assigned to these various channels and information elements are not limiting names in any way, as the various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names.

In the present disclosure, "base station (BS)", "radio base station", "base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission/reception point", Terms such as "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. A base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.

A base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area can also be served by a base station subsystem (e.g., an indoor remote radio head (RRH)). The terms "cell" or "sector" refer to part or all of the coverage area of at least one of the base stations and base station subsystems that serve communication within such coverage.

In the present disclosure, terms such as "mobile station (MS)", "user terminal", "user equipment (UE)", and "terminal" may be used interchangeably.

A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

At least one of the base station and mobile station may be called a transmitting device, a receiving device, a communication device, or the like. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like. The mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations. For example, at least one of the base station and mobile station may be an IoT (Internet of Things) device such as a sensor.

Also, the base station in the present disclosure may be read as a user terminal. For example, each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the terminal 20 may have the functions of the base station 10 described above. Also, words such as "up" and "down" may be replaced with words corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be read as side channels.

Similarly, user terminals in the present disclosure may be read as base stations. In this case, the base station may have the functions that the above-described user terminal has.

The terms "determining" and "determining" used in this disclosure may encompass a wide variety of actions. "Judgement", "determining" can include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining as "judging", "determining", etc. In addition, "determining" and "determining" include receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, and accessing (e.g., accessing data in memory). Also, "determining" or "determining" may include resolving, selecting, choosing, establishing, comparing, etc., to be regarded as "determining" or "determining." In other words, "judgment" and "decision" may include considering that some action is "judgment" and "decision". Also, "judgment (decision)" may be read as "assuming", "expecting", "considering", or the like.

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, and can include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. Couplings or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access". As used in this disclosure, two elements can be considered to be “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, and using electromagnetic energy having wavelengths in the radio frequency, microwave, and light (both visible and invisible) regions, as some non-limiting and non-exhaustive examples.

The reference signal can also be abbreviated as RS (Reference Signal), and may also be called Pilot depending on the applicable standard.

The term "based on" as used in this disclosure does not mean "based only on" unless otherwise specified. In other words, the phrase "based on" means both "based only on" and "based at least on."

Any reference to elements using the "first," "second," etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to a first and second element does not imply that only two elements can be employed or that the first element must precede the second element in any way.

"Means" in the configuration of each device described above may be replaced with "unit", "circuit", "device", or the like.

In the present disclosure, when "include", "including" and variations thereof are used, these terms, like the term "comprising", are intended to be inclusive. Furthermore, the term "or" as used in this disclosure is not intended to be an exclusive OR.

A radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may also consist of one or more slots in the time domain. A subframe may be of a fixed length of time (eg, 1 ms) independent of numerology.

A numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. The numerology may indicate, for example, at least one of Sub Carrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, certain filtering operations performed by the transceiver in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and the like.

A slot may consist of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain. A slot may be a unit of time based on numerology.

A slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist of fewer symbols than a slot. PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.

Radio frames, subframes, slots, minislots and symbols all represent time units when transmitting signals. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.

For example, one subframe may be called a transmission time interval (TTI), a plurality of consecutive subframes may be called a TTI, and one slot or one minislot may be called a TTI. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, may be a period shorter than 1 ms (eg, 1-13 symbols), or may be a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.

Here, TTI refers to, for example, the minimum scheduling time unit in wireless communication. For example, in the LTE system, the base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis. Note that the definition of TTI is not limited to this.

A TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.

When one slot or one minislot is called a TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum scheduling time unit. Also, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.

A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like. A TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.

A long TTI (e.g., normal TTI, subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., shortened TTI, etc.) may be read as a TTI having a TTI length that is less than the TTI length of the long TTI and is 1 ms or more.

A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in the RB may be the same regardless of the numerology, and may be 12, for example. The number of subcarriers included in an RB may be determined based on numerology.

Also, the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long. One TTI, one subframe, etc. may each consist of one or more resource blocks.

Note that one or more RBs may be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, or the like.

Also, a resource block may be composed of one or more resource elements (RE: Resource Element). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.

A bandwidth part (BWP) (which may also be called a bandwidth part) may represent a subset of contiguous common resource blocks (RBs) for a certain numerology on a certain carrier. Here, the common RB may be identified by an RB index based on the common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.

The BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP). One or more BWPs may be configured for terminal 20 within one carrier.

At least one of the configured BWPs may be active, and terminal 20 may not expect to transmit or receive a given signal/channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be read as "BWP".

The above structures such as radio frames, subframes, slots, minislots and symbols are only examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. can be variously changed.

In this disclosure, if articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are plural.

In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean that "A and B are different from C". Terms such as "separate," "coupled," etc. may also be interpreted in the same manner as "different."

Each aspect/embodiment described in the present disclosure may be used alone, may be used in combination, or may be used by switching along with execution. Further, notification of predetermined information (e.g., notification of “being X”) is not limited to explicit notification, but may be performed implicitly (e.g., not notification of the predetermined information).

Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described in this disclosure. The present disclosure can be practiced with modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Accordingly, the description of the present disclosure is for illustrative purposes and is not meant to be limiting in any way.

This international patent application claims priority based on Japanese Patent Application No. 2022-008311 filed on January 21, 2022, and the entire contents of Japanese Patent Application No. 2022-008311 are incorporated herein.

10 Base station 110 Transmitting unit 120 Receiving unit 130 Setting unit 140 Control unit 20 Terminal 210 Transmitting unit 220 Receiving unit 230 Setting unit 240 Control unit 30 Core network 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Driving unit 2003 Operation Rudder 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Revolution sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection Sensor 2029 Accelerator pedal sensor 2030 Driving support system unit 2031 Microprocessor 2032 Memory (ROM, RAM)
2033 communication port (IO port)

Claims

a receiving unit for receiving downlink control information including scheduling of shared channels of different cells or triggering of reference signals of different cells;
a transmitting unit configured to transmit, in an uplink, terminal capability information indicating a restriction between a cell in which the control information is transmitted and a cell of the shared channel or the reference signal;
terminal.
The terminal capability information is information indicating restrictions on subcarrier intervals between the cell in which the control information is transmitted and the cell of the shared channel in scheduling of shared channels of different cells.
A terminal according to claim 1 .
The terminal capability information, in the triggering of the reference signal of different cells, the cell in which the control information is transmitted, the information indicating the limit of the subcarrier interval between the cell of the reference signal,
A terminal according to claim 1 .
a receiving unit that receives from the terminal terminal capability information indicating a limit between a cell in which control information is transmitted and a cell of a shared channel or reference signal;
A transmission unit that transmits control information including scheduling of shared channels of different cells or triggering of reference signals of different cells to the terminal based on the terminal capability information,
base station.
receiving in the downlink control information comprising scheduling of shared channels of different cells or triggering of reference signals of different cells;
transmitting, on the uplink, terminal capability information indicating a restriction between a cell in which the control information is transmitted and a cell of the shared channel or the reference signal;
Communication method.