WO2023058246A1 - Terminal and communication method - Google Patents

Abstract

Provided is a terminal comprising: a reception unit that receives data via a downlink shared channel of a cell belonging to a certain group; and a transmission unit that transmits feedback information via an uplink control channel of a cell belonging to the group. A restriction is applied to a first subcarrier spacing that is a subcarrier spacing of the downlink shared channel, a second subcarrier spacing that is a subcarrier spacing of the uplink control channel, or both the first subcarrier spacing and the second subcarrier spacing.

Description

Terminal and communication method

The present invention relates to a terminal and communication method in a wireless communication system.

NR (New Radio) (also known as "5G"), which is the successor system to LTE (Long Term Evolution), requires a large capacity system, high data transmission speed, low latency, simultaneous Technologies that satisfy connection, low cost, power saving, etc. are being studied. Also, in NR, use of high frequency bands such as 24.25 to 52.6 GHz and 52.6 to 71 GHz is under consideration.

In addition, NR defines an operation of transmitting feedback information for downlink reception in a group of multiple CCs (component carriers) on the PUCCH of one CC in the group ( Non-Patent Documents 1, 2, etc.). ). The group is called a PUCCH group.

24.25 ~ 52.6 GHz, 52.6 ~ 71 GHz, etc., assuming the use of high frequency bands, it is assumed that CCs with large subcarrier spacing within the PUCCH group are used, and between CCs within the PUCCH group The slot length/symbol length difference at can be large. In such a case, terminal operations related to transmission/reception in the PUCCH group may become complicated, resulting in degradation of communication performance.

That is, when assuming the use of high frequency bands, it may become difficult for terminals to appropriately perform operations related to transmission and reception in the PUCCH group.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a technology that enables a terminal to appropriately perform operations related to transmission and reception in a PUCCH group even when using a high frequency band. and

According to the disclosed technique, a receiver that receives data on a downlink shared channel of a cell belonging to a certain group;
a transmitter that transmits feedback information on an uplink control channel of a cell belonging to the group;
a first subcarrier spacing that is the subcarrier spacing of the downlink shared channel, a second subcarrier spacing that is the subcarrier spacing of the uplink control channel, or a combination of the first subcarrier spacing and the second subcarrier spacing Both are provided with terminals subject to restrictions.

According to the disclosed technique, a technique is provided that enables a terminal to appropriately perform operations related to transmission and reception in a PUCCH group even when using a high frequency band.

1 is a diagram for explaining a radio communication system according to an embodiment of the present invention; FIG. 1 is a diagram for explaining a radio communication system according to an embodiment of the present invention; FIG. FIG. 4 is a diagram showing an example of bands; FIG. 4 is a diagram showing an example of PUCCH groups; FIG. 10 is a diagram showing slot lengths for SCS; FIG. 2 is a diagram for explaining cross-carrier scheduling; FIG. It is a figure which shows the basic operation example of a system. FIG. 4 is a diagram for explaining Example 1; FIG. 4 is a diagram for explaining Example 1; 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 which shows the structural example of a vehicle.

Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

Existing technologies are appropriately used for the operation of the wireless communication system according to the embodiment of the present invention. The existing technology is, for example, existing NR (eg, Non-Patent Documents 1 and 2). The radio communication system (base station 10 and terminal 20) in this embodiment can basically operate according to existing regulations. However, the base station 10 and the terminal 20 also perform operations that are not covered by the existing regulations in order to solve the problem when using a high frequency band. In the description of the embodiments to be described later, operations and the like that are not covered by the existing regulations are mainly described. Numerical values described below are all examples.

Further, in the embodiment of the present invention, the duplex system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other (for example, Flexible Duplex, etc.) method may be used.

Further, in the embodiment of the present invention, "configuring" the wireless parameters and the like may mean that predetermined values are preset (Pre-configure), or the base station 10 or A wireless parameter notified from the terminal 20 may be set. The notation "A/B" used in this embodiment means "A or B, or A and B".

(System configuration)

FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. A wireless communication system according to an embodiment of the present invention includes a base station 10 and terminals 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 more than one.

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.

　OFDM is used as the radio access method. In the frequency domain, subcarrier spacings (SCS) of at least 15 kHz, 30 kHz, 120 kHz and 240 kHz are supported. A larger SCS is supported in this embodiment. In addition, regardless of the SCS, a resource block is composed of a predetermined number (for example, 12) of continuous subcarriers.

Terminal 20 detects SSB (SS/PBCH block) when performing initial access to a cell, and identifies SCS in PDCCH, PDSCH, PUCCH, etc., based on PBCH included in SSB, for example.

Also, in the time domain, a slot is composed of a plurality of OFDM symbols (for example, 14 regardless of subcarrier intervals). An OFDM symbol is hereinafter referred to as a "symbol". A slot is a scheduling unit. Also, a subframe of 1 ms interval is defined, and a frame composed of 10 subframes is defined. Note that the number of symbols per slot is not limited to 14.

As shown in FIG. 1, the base station 10 transmits control information or data to the terminal 20 via DL (Downlink) and receives control information or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Also, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Also, both the base station 10 and the terminal 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).

The terminal 20 is a communication device having 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 control information or data from the base station 10 on the DL and transmits control information or data to the base station 10 on the UL, thereby performing various functions provided by the wireless communication system. Use communication services.

FIG. 2 shows a configuration example of a radio communication system when NR-DC (NR-Dual connectivity) is executed. As shown in FIG. 2, a base station 10A serving as MN (Master Node) and a base station 10B serving as SN (Secondary Node) are provided. The base station 10A and base station 10B are each connected to a core network. Terminal 20 communicates with both base station 10A and base station 10B.

A cell group provided by the MN base station 10A is called MCG (Master Cell Group), and a cell group provided by the SN base station 10B is called SCG (Secondary Cell Group). The operation in this embodiment may be performed with either configuration shown in FIG. 1 or FIG.

In the wireless communication system according to the present embodiment, LBT (Listen Before Talk) is performed when an unlicensed band is used. The base station 10 or the terminal 20 transmits when the LBT result is idle, and does not transmit when the LBT result is busy.

(About frequency band)
FIG. 3 shows an example of frequency bands used in NR. NR has three frequency bands (also called frequency ranges): 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). There are two frequency bands. 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.

(About PUCCH Group)
Existing technology supports PUCCH transmission of PUCCH groups in FR1 and FR2. A PUCCH group is a group of multiple CCs including CCs on which PUCCH transmission is possible, and feedback information (HARQ-ACK) for PDSCH reception (data reception) on CCs belonging to the PUCCH group is transmitted on the PUCCH.

In addition, in the present embodiment, CC and cell may be interpreted as synonymous. That is, CCs may be replaced with cells. Also, the "PUCCH group" may be called by another name. For example, it may be called a cell group or the like.

According to existing regulations, the terminal 20 supports up to two PUCCH groups depending on the UE capability. FIG. 4 shows an example of two PUCCH groups when supporting two PUCCH groups. As shown in FIG. 4, in existing regulations, two PUCCH groups consist of a primary PUCCH group and a secondary PUCCH group.

Also, the terminal 20 supports up to four different SCSs in the same PUCCH group according to the UE capability. Also, carrier type combinations in PUCCH groups are specified according to UE capabilities.

(About UE Capability related to PUCCH group)
In the current specification (Non-Patent Document 3), UE capabilities related to PUCCH groups are specified as UE features (terminal features, terminal features) as follows.

FG6-9: Ability to support different numerologies across multiple NR carriers in the same NR PUCCH group with PUCCH on the carrier of the smaller SCS. Specifically, the same NR PUCCH group supports up to two different newerologies.

FG6-9a: Ability to support different numerologies across multiple NR carriers in the same NR PUCCH group with PUCCH on the carrier of the larger SCS. Specifically, the same NR PUCCH group supports up to two different newerologies.

FG22-6: When two NR PUCCH groups are not set, support up to three different neurology in the same NR PUCCH group for the NR part of EN-DC, NGEN-DC, NE-DC, and NR-CA ability to do.

Candidate carriers for PUCCH transmission are one or more of {FR1 licensed TDD, FR1 unlicensed TDD, FR1 licensed FDD, FR2} for which PUCCH transmission can be configured.

FG22-6a: When two NR PUCCH groups are not set, support up to four different neumerologies in the same NR PUCCH group for the NR part of EN-DC, NGEN-DC, NE-DC, and NR-CA ability to do.

Candidate carriers for PUCCH transmission are one or more of {FR1 licensed TDD, FR1 unlicensed TDD, FR1 licensed FDD, FR2} for which PUCCH transmission can be configured.

FG22-7: Support 2 PUCCH groups for NR-CA with 3 or more bands with at least 2 carrier types among {FR1 licensed TDD, FR1 unlicensed TDD, FR1 licensed FDD, FR2} carrier types ability to do.

FG22-7a: Ability to support different numerologies across multiple NR PUCCH groups.

In a UE supporting two PUCCH groups for a CA with 3 or more bands with at least two carrier types of {FR1 licensed TDD, FR1 unlicensed TDD, FR1 licensed FDD, FR2} carrier types, at a certain time have different numerologies between the two NR PUCCH groups for data/control channels at (at a given time).

FG22-7b: Ability to support different neumerologies across multiple NR carriers in the same NR PUCCH group with PUCCH on the smaller SCS carrier.

In a UE that supports two PUCCH groups for CA with 3 or more bands with at least two carrier types of {FR1 licensed TDD, FR1 unlicensed TDD, FR1 licensed FDD, FR2}, at a certain time NR PUCCH is transmitted on the carrier with the smaller SCS for the data/control channel at (at a given time) different numerologies across NR carriers with at most two different numerologies within the same NR PUCCH group to support.

FG22-7c: Ability to support different neumerologies across multiple NR carriers in the same NR PUCCH group with PUCCH on the carrier of the larger SCS.

In a UE that supports two PUCCH groups for CA with 3 or more bands with at least two carrier types of {FR1 licensed TDD, FR1 unlicensed TDD, FR1 licensed FDD, FR2}, at a certain time NR PUCCH is transmitted on the carrier with the larger SCS for the data/control channel at (at a given time) different numerologies across NR carriers with at most two different numerologies within the same NR PUCCH group to support.

(Problem, Outline of Embodiment)
It is assumed that a larger SCS (480 kHz, 960 kHz, etc.) will be introduced in the 52.6 GHz or higher band operation. As shown in FIG. 5, 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. 6 shows an example of a situation where the difference in symbol length/slot length between carriers becomes large. FIG. 6 is a diagram illustrating an example of 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. 6, the numerology of CC#2 is greater than the numerology of CC#1, and as shown in FIG. 6, 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, for example, in cross-carrier scheduling, a limit is set such that the magnitude of the difference between the numerology of the PDCCH carrier and the numerology of the PDSCH carrier is equal to or less than a threshold. The threshold is 3, for example.

Regarding the PUCCH group, if the difference in numerology between carriers becomes large, there are issues such as the complexity of terminal operations. Techniques for reducing the complexity of terminal operations for PUCCH transmissions in PUCCH groups that include 52.6-71 GHz operation are described below.

(basic operation example)
A basic operation example of the radio communication system according to this embodiment will be described with reference to FIG. In S<b>101 , the terminal 20 transmits capability information to the base station 10 . Note that S101 may not be performed in some cases.

In S102, the base station 10 transmits setting information to the terminal 20. This setting information includes, for example, settings for PDCCH, PDSCH, PUCCH, and PUSCH. Regarding PDSCH setting, PUCCH designation for PDSCH for each cell (designation of a cell to transmit PUCCH) may be made. By specifying this PUCCH, a PUCCH group may be configured, or an explicit PUCCH group setting (eg, a setting indicating that the PUCCH of cell #1 is used for the PDSCH of cells #1 to #3). may be

The terminal 20 receives PDCCH in each cell belonging to a certain PUCCH group (S103) and receives PDSCH (S104). In S105, the terminal 20 transmits feedback information on data reception by the PDSCH on the PUCCH in the PUCCH group.

Specific examples according to the present embodiment will be described below as Examples 1 and 2. The outline is as follows. The first embodiment is a basic example, and it is assumed that the second embodiment is implemented on the premise of the first embodiment. However, without presupposing Example 1, you may implement Example 2 independently.

- Example 1: Restriction is placed on PUCCH transmission in a PUCCH group.

- Example 2: UE capability for PUCCH group setup in FR2-2 is introduced.

(Example 1)
In Example 1, restrictions are applied to carriers included in a PUCCH group. Regarding the restriction, if the PUCCH group includes carriers of the FR2-2 band, the restriction may be applied, and if the PUCCH group does not include the FR2-2 band carriers, the restriction may not be applied.

Also, if the PUCCH group includes a 120/480/960 kHz SCS carrier, the restriction may be applied, and if the PUCCH group does not include a 120/480/960 kHz SCS carrier, the restriction may not be applied. . The first embodiment will be described in detail below.

In the following description, μ _PDSCH indicates the SCS of the PDSCH carrier, μ _PDCCH indicates the SCS of the PDCCH carrier, and μ _PUCCH indicates the SCS of the PUCCH carrier. Note that μ _PUCCH may be written as μ _UL . Also, the SCS of the PDSCH carrier, the SCS of the PDCCH carrier, and the SCS of the PUCCH carrier may be expressed as the SCS of the PDSCH, the SCS of the PDCCH, and the SCS of the PUCCH, respectively. Also, the numerology μ expresses Δf=SCS, where Δf=2 ^μ ×15 kHz. SCS and numerology μ are sometimes treated synonymously.

In Example 1, restrictions are placed on the SCS in the PUCCH group. At least one of the SCS of the PUCCH (μ _PUCCH ) and the SCS of a plurality of PDSCHs (μ _PDSCH ) is restricted. Specific examples will be described below as option 1 to option 4. In describing options 1-4, appropriate reference is made to FIG. 8 showing PUCCH groups.

<Option 1>
In Option 1, restrictions on μ _PUCCH are applied. For example, μ _PUCCH ≤ q. q is 3, for example. If q is 3, the SCS for PUCCH transmissions in a PUCCH group is restricted to 15/30/60/120 kHz. q being 3 is an example. For example, q may be 2 or 4 or some other value, depending on terminal capabilities and the like.

In option 1, the terminal 20 transmits feedback information for data received on the PDSCH of a cell belonging to a certain PUCCH group, on the PUCCH of a cell belonging to the PUCCH group and satisfying μ _PUCCH ≤q.

<Option 2>
In Option 2, restrictions on the μ _PDSCH apply. For example, μ _PDSCH ≦s. s is 3, for example. When s is 3, in a PUCCH group, the SCS for PDSCH on CCs included in the PUCCH group is restricted to 15/30/60/120 kHz. It is an example that s is 3. For example, s may be 2 or 4 or some other value, depending on terminal capabilities and the like.

In option 2, the same restriction may be applied to the μ _PDSCH of all _PDSCHs that make up the PUCCH group in the example shown in FIG. may Moreover, PDSCH with restrictions and PDSCH without restrictions may coexist.

For example, in the example shown in FIG. 8, μ _PDSCH ≦s1 may be set for CC#1 to CC#t, and μ _PDSCH ≦s2 may be set for CC#t+1 to CC#n. s1≠s2, for example, s1 may be 3 and s2 may be 2 or 4.

In option 2, the terminal 20 transmits feedback information for data received on the PDSCH of cells belonging to a certain PUCCH group that satisfies μ _PDSCH ≦s, on the PUCCH of cells belonging to the PUCCH group.

<Option 3-1>
Option 3 has options 3-1 and 3-2. First, Option 3-1 will be explained. Option 3-1 applies restrictions on the relationship between μ _PUCCH and μ _PDSCH . For example, µ _PDSCH ≤ µ _PUCCH . That is, in this case, in a PUCCH group, the SCS for PUCCH transmission is not smaller than the SCS for PDSCH on CCs included in the PUCCH group.

Note that the application of the relationship μ _PDSCH ≤ μ _PUCCH is an example, and the relationship μ _PDSCH ≥ μ _PUCCH may be applied.

In option 3-1, the same restriction may be applied to μ _PDSCH of all PDSCHs that make up the PUCCH group in the example shown in FIG. 8, or different restrictions are mixed in μ _PDSCH of all PDSCHs You may have Moreover, PDSCH with restrictions and PDSCH without restrictions may coexist.

For example, in the example shown in FIG. 8, μ _PDSCH ≦μ _PUCCH may be set in CC#1 to CC#t, and μ _PDSCH ≧μ _PUCCH may be set in CC#t+1 to CC#n.

In option 3-1, for example, terminal 20 sends feedback information for data received on PDSCH of a cell that satisfies μ _PDSCH ≤ μ _PUCCH belonging to a certain PUCCH group to a cell that satisfies μ _PDSCH ≤ μ _PUCCH belonging to the PUCCH group. Transmit on PUCCH.

<Option 3-2>
Option 3-2 also applies restrictions on the relationship between μ _PUCCH and μ _PDSCH . In option 3-2, let |μ _PDSCH -μ _PUCCH |≦k. k is an integer of 0 or more. For example, k may be any value of 0, 1, 2, or 3.

That is, in this case, in a PUCCH group, the difference between the SCS (numerology) for PDSCH on CCs included in the PUCCH group and the SCS (numerology) for PUCCH transmission is k or less. k may be a different value for each terminal according to terminal capabilities.

In option 3-2, the same restriction may be applied to μ _PDSCH of all PDSCHs that make up the PUCCH group in the example shown in FIG. 8, or different restrictions are mixed in μ _PDSCH of all PDSCHs You may have Moreover, PDSCH with restrictions and PDSCH without restrictions may coexist.

For example, in the example shown in FIG. 8, the relationship between the SCS of PDSCH on CC#m belonging to the PUCCH group (μ _{PDSCH on CC#m} ) and the μ _PUCCH of PUCCH belonging to the PUCCH group is |μ _{PDSCH on CC # m} -μ _PUCCH |≦k, 1≦m≦n, may be constrained.

Also, for example, in "|μ _{PDSCH on CC#m} -μ _PUCCH |≦k1, 1≦m≦t" and "|μ _{PDSCH on CC#m} -μ _PUCCH |≦k2, t+1≦m≦n" The limits expressed may apply. Here, k1≠k2.

Also, the same restrictions as those for μ _PDCCH and μ _PDSCH in cross-carrier scheduling described above may be applied to μ _PUCCH . That is, for example, if |μ _PDCCH −μ _PDSCH |≦k is applied for cross-carrier scheduling, |μ _PDSCH −μ _PUCCH |≦k may be applied for PUCCH groups. k may be 3, for example.

In option 3-2, terminal 20, for example, provides feedback information for data received on PDSCH of a cell that satisfies |μ _PDSCH -μ _PUCCH |≦k belonging to a certain PUCCH group, |μ _PDSCH -μ belonging to the PUCCH group _PUCCH The PUCCH of a cell that satisfies |≤k is used for transmission.

<Option 4-1>
Option 4 has options 4-1 and 4-2. First, Option 4-1 will be explained. Option 4-1 applies a restriction on the relationship between μ _PUCCH and μ _PDCCH indicating the SCS of the PDCCH scheduling the PDSCH in the PUCCH group. In Option 4-1 (and 4-1), restrictions equivalent to Options 1 and 2 may be applied. That is, μ _PUCCH ≤ q or μ _PDDCH ≤ s may be applied.

Here, cross-carrier scheduling may be performed, or cross-carrier scheduling may not be performed. In the case of FIG. 9, which shows an example of PUCCH groups in option 4-1 (and 4-2), there are PDCCH/PDSCH with cross-carrier scheduling and PDCCH/PDSCH without cross-carrier scheduling.

For example, μ _PDCCH ≤ μ _PUCCH . That is, in this case, in a PUCCH group, the SCS for PUCCH transmission is not smaller than the SCS for PDCCH on CCs included in the PUCCH group.

Note that the application of the relationship μ _PDCCH ≤ μ _PUCCH is an example, and the relationship μ _PDCCH ≥ μ _PUCCH may be applied.

In option 4-1, the same restriction may be applied to μ _PDCCH of all PDCCHs that make up the PUCCH group in the example shown in FIG. 9, or different restrictions are mixed in μ _PDCCH of all PDCCHs You may have Also, PDCCHs with restrictions and PDCCHs without restrictions may coexist.

For example, in the example shown in FIG. 9, μ _PDDCH ≤ μ _PUCCH may be set for CC#1 to CC#t, and μ _PDCCH ≥ μ _PUCCH may be set for CC#t+1 to CC#n.

In option 4-1, terminal 20, for example, sends feedback information for data received on PDSCH scheduled on PDCCH of a cell that satisfies μ _PDCCH ≤ μ _PUCCH belonging to a certain PUCCH group to μ _PDCCH ≤ μ belonging to the PUCCH group. It is transmitted by the PUCCH of a cell that satisfies _{the PUCCH} .

<Option 4-2>
Option 4-2 also applies restrictions on the relationship between μ _PUCCH and μ _PCSCH . In option 4-2, |μ _PDCCH -μ _PUCCH |≦k. k is an integer of 0 or more. For example, k may be any value of 0, 1, 2, or 3.

That is, in this case, in a PUCCH group, the difference between the SCS (numerology) for PDCCH on CCs included in the PUCCH group and the SCS (numerology) for PUCCH transmission is k or less. k may be a different value for each terminal according to terminal capabilities.

In option 4-2, the same restriction may be applied to μ _PDCCH of all PDCCHs that make up the PUCCH group in the example shown in FIG. 9, or different restrictions are mixed in μ _PDCCH of all PDCCHs You may have Also, PDCCHs with restrictions and PDCCHs without restrictions may coexist.

For example, in the example shown in FIG. 9, the relationship between the SCS (μ _{PDCCH on CC#m) of the PDCCH on CC#m} belonging to the PUCCH group and the μ _PUCCH of the PUCCH belonging to the PUCCH group is |μ _{PDCCH on CC # m} -μ _PUCCH |≦k, 1≦m≦n, may be constrained.

Also, for example, in "|μ _{PDCCH on CC#m} -μ _PUCCH |≦k1, 1≦m≦t" and "|μ _{PDCCH on CC#m} -μ _PUCCH |≦k2, t+1≦m≦n", The limits expressed may apply. Here, k1≠k2.

Also, the same restrictions as those for μ _PDCCH and μ _PDSCH in cross-carrier scheduling described above may be applied to μ _PUCCH . That is, when |μ _PDCCH −μ _PDSCH |≦k is applied to cross-carrier scheduling, |μ _PDCCH −μ _PUCCH |≦k may be applied to PUCCH groups. k may be 3, for example.

In option 4-2, the terminal 20, for example, the feedback information for the data received on the PDSCH scheduled on the PDCCH of a cell that satisfies |μ _PDCCH -μ _PUCCH | |μ _PDCCH −μ _PUCCH |≦k is transmitted on the PUCCH of the cell.

By the operation of the first embodiment, even when using a high frequency band, it is possible to appropriately perform operations related to transmission and reception in the PUCCH group in the terminal.

<Operations of Base Station 10 and Terminal 20>
The restrictions described in options 1, 2, 3-1, 3-2, 4-1, and 4-2 may be defined in the specifications, or the base station 10 to the terminal 20 It may be set or instructed. It may be defined in the specification and set or instructed from the base station 10 to the terminal 20 .

Here, an operation example will be described using FIG. It is assumed that a plurality of cells (CCs) and a carrier, SCS, etc. for each cell (CC) are set (notified) from the base station 10 to the terminal 20 at a stage before S101 in FIG. Note that SCS may be set in S102 for each channel such as PDSCH, PUCCH, PUSCH, and PDCCH, for example.

For example, assuming that the restrictions described in each option are defined in the specifications, in S101 of FIG. do.

For example, based on the capability information, the base station 10 configures the PUCCH group for the terminal 20 in S102. This PUCCH group setting may be, for example, specifying a PUCCH cell for each cell's PDSCH/PDCCH so as to satisfy restrictions in applicable options.

In this case, the terminal 20 can perform PUCCH transmission in the PUCCH group while satisfying the restrictions by executing the operations of S103 to S105 according to the settings.

In addition, in either case where the restrictions described in each option are specified in the specifications or in the case where the restrictions described in each option are not specified in the specifications, in S102, the base station 10 to the terminal 20 , the restriction information described in any of the options may be configured along with the configuration of the PUCCH group (eg, specifying the PUCCH cell for the PDSCH of each cell). For example, the parameters q, s, k, etc. described in Options 1 to 4 may be configured for each PDSCH (or PDCCH) cell. Also, the setting/designation of parameters q, s, k, etc. may use any of RRC signaling, MAC CE, and DCI.

In this case, combinations of PDSCH/PDCCH and PUCCH related to PUCCH group setting may include those that do not satisfy the set/designated restrictions. Therefore, the terminal 20 selects a PDSCH/PDCCH cell (CC) in the PUCCH group so as to satisfy the set/designated limit, and transmits feedback for the data received in that cell on the PUCCH of the PUCCH group.

It should be noted that, in the case where the restriction is specified/set from the base station 10 to the terminal 20 as described above, for example, it is assumed that the terminal 20 that receives the specification/setting of a certain option is implicitly applied to other options as well. You may For example, it may be assumed that option 2 is also implicitly applied to the terminal 20 designated/set with option 1. For example, it may be assumed that options 1 and 2 are also implicitly applied to the terminal 20 designated/configured with option 3 or 4. The same assumption may be made on the base station 10 side as well.

<Other examples and variations>
Here, an example commonly applied to the present embodiment (Example 1 and Example 2) will be described. At least one of the multiple options described in Example 1 may be supported. Also, the multiple options described in the first embodiment may be combined arbitrarily and implemented. For example, option 1 and option 2 may be combined, option 1, option 2 and option 3 may be combined, or option 1 to option 4 may be combined.

Options 1-4 may also be applied depending on the SCS of the cell/CC. For example, either option may be applied when at least one of μ _PDCCH , μ _PDSCH , μ _PUCCH , and μ _UL belonging to the PUCCH group is 3, 5, or 6.

Also, when the terminal 20 transmits feedback information on the PUSCH, the PUCCH described in the first embodiment may be replaced with the PUSCH. That is, the same restrictions as those for PUCCH (and PDSCH and PDCCH) described in the first embodiment may be applied to PUSCH (and PDSCH and PDCCH) that transmit feedback information.

Options 1 to 4 may also be applied based on signaling of capability information (UE capability) from the terminal 20 to the base station 10. For example, when the base station 10 determines that the terminal 10 has the capability of any one of Options 1 to 4, that option may be applied. Examples of notification of capability information include the following.

· The terminal 20 notifies the base station 10 as capability information whether or not to support PUCCH transmission with restrictions on SCS in the PUCCH group.

· The terminal 20 notifies the base station 10 as capability information whether or not to support PUCCH transmission without restrictions on SCS in the PUCCH group.

· The terminal 20 notifies the base station 10 as capability information which restrictions are supported for PUCCH transmission in the PUCCH group. For example, the terminal 20 notifies the base station 10 as capability information which option is supported for PUCCH transmission in the PUCCH group. Also, the terminal 20 may notify the base station of the value of k supported in option 3 or 4.

(Example 2)
Next, Example 2 will be described. Example 2 may be implemented in combination with Example 1. In Example 2, the capability information (UE capability) regarding the support of two PUCCH group settings (related to the above-mentioned FG22-6/6a/7/7a/7b/7c) is defined for FR2-2 good too. Capability information defined in this way may be notified from the terminal 20 to the base station 10 by RRC signaling.

Options 1-1, 1-2, Option 2, and Option 3 are explained below.

<Option 1-1>
FR-2 in FG22-6/6a/7/7a/7b/7c may include FR2-1 and FR-2.

<Option 1-2>
FR-2 in FG22-6/6a/7/7a/7b/7c may include only FR2-1. That is, FR2-2 may be excluded from FG22-6/6a/7/7a/7b/7c.

<Option 2>
At least one of FG22-6/6a/7/7a/7b/7c may be expanded to include FR2-2.

For example, in at least one of FG22-6/6a/7/7a/7b/7c, the carrier type of the band included in the PUCCH group (PUCCH group (s)) is FR2-2 licensed TDD, FR2-2 May include any one or more of licensed FDD, FR2-2 unlicensed TDD, and FR2-2 unlicensed FDD. Also, for example, for FR2-2 of 120 kHz SCS licensed TDD, SCS restrictions may be applied.

<Option 3>
New capability information (UE capability) for FR2-2 may be defined. Examples of capability information that may be specified for FR2-2 are:

- Different numerology numbers may be defined in the same PUCCH group.

- The number of supported PUCCH groups (PUCCH group(s)) may be specified.

· A combination of carrier types in a PUCCH group may be specified.

- If up to two different neurology are supported in the same PUCCH group, in the PUCCH group, support PUCCH on the carrier with the larger SCS, or support PUCCH on the carrier with the smaller SCS may be defined.

The restrictions on SCS described in Example 1 may be applied to Options 1-1, 1-2, 2, and 3 above.

According to the second embodiment, it is possible for the terminal 20 and the base station 10 to appropriately operate using a high frequency band such as FR2-2.

(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.

<Base station 10>
FIG. 10 is a diagram showing an example of the functional configuration of the base station 10. As shown in FIG. As shown in FIG. 10, 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. 10 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. Also, the transmitting unit 110 and the receiving unit 120 may be collectively referred to as 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. Further, the transmission section 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DCI by PDCCH, data by PDSCH, and the like to the terminal 20 .

The setting unit 130 stores preset setting information and various types of setting information to be transmitted to the terminal 20 in a storage device included in the setting unit 130, and reads them from the storage device as necessary.

The control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110 . Also, the control unit 140 includes a function of performing LBT. A functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110 , and a functional unit related to signal reception in control unit 140 may be included in receiving unit 120 . Also, the transmitter 110 may be called a transmitter, and the receiver 120 may be called a receiver.

<Terminal 20>
FIG. 11 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. As shown in FIG. 11, the terminal 20 has a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240. The functional configuration shown in FIG. 11 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 collectively referred to as 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. The receiving unit 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, DCI by PDCCH, data by PDSCH, and the like transmitted from the base station 10 . In addition, for example, the transmission unit 210, as D2D communication, to the other terminal 20, PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Channel) etc., and the receiving unit 120 may receive PSCCH, PSSCH, PSDCH, PSBCH, or the like from another terminal 20 .

The setting unit 230 stores various types of setting information received from the base station 10 or other terminals by the receiving unit 220 in the storage device provided in the setting unit 230, and reads them from the storage device as necessary. The setting unit 230 also stores preset setting information.

The control unit 240 controls the terminal 20. A functional unit related to signal transmission in control unit 240 may be included in transmitting unit 210 , and a functional unit related to signal reception in control unit 240 may be included in receiving unit 220 . Also, the transmitter 210 may be called a transmitter, and the receiver 220 may be called a receiver.

<Appendix>
According to this embodiment, at least a terminal and a communication method described in items 1 to 6 below are provided.
(Section 1)
a receiver for receiving data on downlink shared channels of cells belonging to a group;
a transmitter that transmits feedback information on an uplink control channel of a cell belonging to the group;
a first subcarrier spacing that is the subcarrier spacing of the downlink shared channel, a second subcarrier spacing that is the subcarrier spacing of the uplink control channel, or a combination of the first subcarrier spacing and the second subcarrier spacing Both, restrictions apply to terminals.
(Section 2)
the first subcarrier spacing is less than or equal to a threshold; the second subcarrier spacing is less than or equal to a threshold; the first subcarrier spacing is greater than or equal to a second subcarrier spacing; 3. The terminal according to claim 2, wherein the carrier spacing is greater than or equal to or the magnitude of the difference between the first subcarrier spacing and the second subcarrier spacing is less than or equal to a threshold.
(Section 3)
a receiver for receiving data on a downlink shared channel scheduled on a downlink control channel of a cell belonging to a group;
a transmitter that transmits feedback information on an uplink control channel of a cell belonging to the group;
a third subcarrier spacing that is the subcarrier spacing of the downlink control channel, a second subcarrier spacing that is the subcarrier spacing of the uplink control channel, or a combination of the third subcarrier spacing and the second subcarrier spacing Both, restrictions apply to terminals.
(Section 4)
the third subcarrier spacing is less than or equal to a threshold; the second subcarrier spacing is less than or equal to a threshold; the third subcarrier spacing is greater than or equal to a second subcarrier spacing; 4. The terminal according to claim 3, wherein the carrier spacing is greater than or equal to or the magnitude of the difference between the third subcarrier spacing and the second subcarrier spacing is less than or equal to a threshold.
(Section 5)
5. The terminal according to any one of clauses 1 to 4, wherein the restrictions correspond to subcarrier spacing restrictions for downlink control channels and downlink shared channels in cross-carrier scheduling.
(Section 6)
receiving data on a downlink shared channel of cells belonging to a group;
transmitting feedback information on uplink control channels of cells belonging to the group;
a first subcarrier spacing that is the subcarrier spacing of the downlink shared channel, a second subcarrier spacing that is the subcarrier spacing of the uplink control channel, or a combination of the first subcarrier spacing and the second subcarrier spacing Both, restrictions apply to the communication method that the terminal performs.

Any one of items 1 to 6 provides a technique that enables the terminal to appropriately perform operations related to transmission and reception in the PUCCH group even when using a high frequency band. In particular, terms 2 and 4 make it possible to work properly with explicit limits. In addition, according to the fifth term, the limitation in the PUCCH group when performing cross-carrier scheduling can be matched to the limitation in cross-carrier scheduling.

(Hardware configuration)
The block diagrams (FIGS. 10 and 11) used to describe the above embodiments show blocks in functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of implementing 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 directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be 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 judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't 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. 12 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 are 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. good too.

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 performed by the processor 1001 performing calculations and controlling communication by the communication device 1004 by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002. or by controlling at least one of data reading and writing in the storage device 1002 and the 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. 10 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 . Further, for example, the control unit 240 of the terminal 20 shown in FIG. 11 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, for example, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured. 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 a communication method according to an embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or 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 includes a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD). may consist of For example, a transmitting/receiving antenna, an amplifier section, a transmitting/receiving section, a transmission path 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 include hardware such as microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), and FPGAs (Field Programmable Gate Arrays). , and part or all of each functional block may be implemented by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

Also, the terminal 20 or the base station 10 may be provided in the vehicle 2001. FIG. 13 shows a configuration example of the vehicle 2001. As shown in FIG. As shown in FIG. 13, 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, and various sensors 2021-2029. , 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 functions of terminal 20 may be installed in communication module 2013 .

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).

The signals from the various sensors 2021 to 2029 include the current signal from the current sensor 2021 that senses the current of the motor, the rotation speed signal of the front and rear wheels acquired by the rotation speed sensor 2022, and the front wheel acquired by the air pressure sensor 2023. and rear wheel air pressure signal, vehicle speed signal obtained by vehicle speed sensor 2024, acceleration signal obtained by acceleration sensor 2025, accelerator pedal depression amount signal obtained by accelerator pedal sensor 2029, brake pedal sensor 2026 obtained by There are a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.

The information service unit 2012 includes 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 devices for controlling these devices. ECU. 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.

Driving support system unit 2030 includes millimeter wave radar, LiDAR (Light Detection and Ranging), camera, positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, automatic driving vehicle (AV) map, etc. ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, AI processors, etc., to prevent accidents and reduce the driver's driving load. and one or more ECUs for controlling 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 vehicle 2001 through the communication port 2033, 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 electronic Data is transmitted and received between the microprocessor 2031 and memory (ROM, RAM) 2032 in the control unit 2010 and the sensors 2021-29.

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, from the electronic control unit 2010, the rotation speed signals of the front and rear wheels obtained by the rotation speed sensor 2022, the air pressure signals of the front and rear wheels obtained by the air pressure sensor 2023, and the vehicle speed sensor. 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, and a shift lever. A shift lever operation signal obtained by the sensor 2027 and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028 are also transmitted to an 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 controls 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, and the axle 2009 provided in the vehicle 2001. , sensors 2021 to 2029 and the like may be controlled.

(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 can understand various modifications, modifications, alternatives, replacements, and the like. be. 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 used in another item. may apply (unless inconsistent) to the matters set forth in 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 are stored in random access memory (RAM), flash memory, read-only memory, respectively. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.

Also, notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods. For example, notification of information includes 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, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.In addition, RRC signaling may also be called an RRC message, for example, RRC It may be a connection setup (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) system), FRA (Future Radio Access), NR (new Radio), 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), and other suitable systems and extended It may be applied to at least one of the next generation systems. 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. In a network consisting of one or more network nodes with base station 10, various operations performed for communication with terminal 20 may be performed by base station 10 and other network nodes other than base station 10 ( (eg, but not limited to MME or S-GW). Although the case where there is one network node other than the base station 10 is illustrated above, 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 performed by a value represented by 1 bit (0 or 1), may be performed by a boolean value (Boolean: true or false), or may be performed by comparing numerical values (e.g. , comparison with a predetermined value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.

In addition, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) to website, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.

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

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 expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information. may be represented. 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. Since the various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are in no way restrictive names. isn't it.

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", "cell", "sector", " Terms such as "cell group", "carrier", "component carrier" 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. When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being associated with a base station subsystem (e.g., an indoor small base station (RRH: The term "cell" or "sector" refers to part or all of the coverage area of at least one of the base stations and base station subsystems serving communication services in this coverage. point to

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

A mobile station is defined 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 It may also be called a 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 terminal. For example, a configuration in which communication between a base station and a terminal is replaced with communication between a plurality of terminals 20 (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.) Each aspect/embodiment of the present disclosure may be applied to. 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, a terminal in the present disclosure may be read as a base station. In this case, the base station may have the functions that the terminal has.

The terms "determining" and "determining" used in this disclosure may encompass a wide variety of actions. "Judgement" and "determination" are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as "judged" or "determined", and the like. Also, "judgment" and "determination" are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment" or "decision" has been made. In addition, "judgment" and "decision" are considered to be "judgment" and "decision" by resolving, selecting, choosing, establishing, comparing, etc. can contain. 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, It can include the presence of one or more intermediate elements between two elements being "connected" or "coupled." 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 are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.

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.

Where "include," "including," and variations thereof are used in this disclosure, these terms are inclusive, as is the term "comprising." is intended. 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. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or 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. may That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms may be Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe. Also, one slot may be called a unit time. The unit time may differ from cell to cell depending on the neurology.

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.

Note that the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms, and the short TTI (e.g., shortened TTI, etc.) is less than the TTI length of the long TTI and 1 ms A TTI having the above TTI length may be read instead.

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.

One or more RBs are physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. may be called.

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 multiple BWPs may be configured for a UE within one carrier.

At least one of the configured BWPs may be active, and the UE 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 structures such as radio frames, subframes, slots, minislots and symbols described above are only examples. For example, the number of subframes contained in a radio frame, the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. can be varied.

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. In addition, the notification of predetermined information (for example, notification of “being X”) is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.

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 the present 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.

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 1001 processor 1002 storage device 1003 auxiliary storage device 1004 communication device 1005 input device 1006 output device 2001 vehicle 2002 Drive unit 2003 Steering unit 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 (6)

1. a receiver for receiving data on downlink shared channels of cells belonging to a group;
   a transmitter that transmits feedback information on an uplink control channel of a cell belonging to the group;
   a first subcarrier spacing that is the subcarrier spacing of the downlink shared channel, a second subcarrier spacing that is the subcarrier spacing of the uplink control channel, or a combination of the first subcarrier spacing and the second subcarrier spacing Both, restrictions apply to terminals.
2. The first subcarrier spacing is less than or equal to a threshold; The second subcarrier spacing is less than or equal to a threshold; The first subcarrier spacing is greater than or equal to the second subcarrier spacing; The terminal according to claim 1, wherein it is one subcarrier spacing or more, or the magnitude of the difference between the first subcarrier spacing and the second subcarrier spacing is less than or equal to a threshold.
3. a receiver for receiving data on a downlink shared channel scheduled on a downlink control channel of a cell belonging to a group;
   a transmitter that transmits feedback information on an uplink control channel of a cell belonging to the group;
   a third subcarrier spacing that is the subcarrier spacing of the downlink control channel, a second subcarrier spacing that is the subcarrier spacing of the uplink control channel, or a combination of the third subcarrier spacing and the second subcarrier spacing Both, restrictions apply to terminals.
4. The third subcarrier spacing is less than or equal to a threshold; The second subcarrier spacing is less than or equal to a threshold; The third subcarrier spacing is greater than or equal to the second subcarrier spacing; 4. The terminal according to claim 3, wherein the distance is greater than or equal to 3 subcarrier intervals, or the magnitude of the difference between the third subcarrier interval and the second subcarrier interval is less than or equal to a threshold.
5. 5. A terminal according to any one of claims 1 to 4, wherein said restrictions correspond to subcarrier spacing restrictions for downlink control channels and downlink shared channels in cross-carrier scheduling.
6. receiving data on a downlink shared channel of cells belonging to a group;
   transmitting feedback information on uplink control channels of cells belonging to the group;
   a first subcarrier spacing that is the subcarrier spacing of the downlink shared channel, a second subcarrier spacing that is the subcarrier spacing of the uplink control channel, or a combination of the first subcarrier spacing and the second subcarrier spacing Both, restrictions apply to the communication method that the terminal performs.

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