Terminal and communication system

Abstract

A terminal comprising: a communication unit that communicates with a base station capable of carrying out transmission and reception using the same resource; and a control unit that determines whether a first channel or a first communication timing that is the communication timing of a first signal and a second channel or a second communication timing that is the communication timing of a second signal will collide, wherein the communication unit transmits or receives the first channel or the first signal and the second channel or the second signal simultaneously if the first communication timing and the second communication timing will collide.

Description

[Technical Field]

[0001] The present invention relates to a terminal, a base station, and a communication system in a wireless communication system. [Background technology]

[0002] NR (New Radio) (also known as "5G"), the successor to LTE (Long Term Evolution) (also known as "4G"), has been introduced. NR uses technologies that meet the requirements of a large-capacity system, high-speed data transmission, low latency, simultaneous connection of many terminals, low cost, and low power consumption.

[0003] Both 4G and 5G can use either FDD (Frequency Division Duplex) or TDD (Time Division Duplex) as a duplexing method. FDD has the advantage of low latency because DL and UL communications can be performed at any time, but the disadvantage is that the ratio of DL and UL resources is fixed.

[0004] On the other hand, TDD has the advantage that the ratio of DL and UL resources can be varied, allowing for an increase in DL resource amount in a typical environment with heavy DL traffic, but the disadvantage is that increasing DL resource amount reduces UL resource amount, resulting in increased delay.

[0005] In recent years, discussions on 5G-advanced and 6G have begun both domestically and internationally, and 5G-advanced and 6G are expected to further improve communication performance and diversify use cases. [Prior art documents] [Non-patent literature]

[0006] [Non-Patent Document 1] 3GPP TS 38.213 V16.7.0(2021-09) [Non-patent document 2] 3GPP TS 38.331 V16.6.0(2021-09) Summary of the Invention [Problem to be solved by the invention]

[0007] For 5G-advanced and 6G, communication methods are being considered that incorporate the advantages of FDD and TDD while reducing their disadvantages. For example, a communication method is being considered that allows base stations and terminals to simultaneously transmit and receive using the same time-frequency resources. However, with existing technology, terminal operation in these communication methods is unclear, and there is a possibility that terminals may not operate properly in these communication methods.

[0008] The present invention has been made in consideration of the above points, and aims to provide a technology that enables a terminal to operate properly in a communication system in which both the terminal and the base station can simultaneously transmit and receive using the same resources. [Means for solving the problem]

[0009] According to the disclosed technology, a communication unit that communicates with a base station that can perform transmission and reception using the same resources; a control unit that determines whether a first communication timing, which is a communication timing of a first channel or a first signal, and a second communication timing, which is a communication timing of a second channel or a second signal, collide with each other; When the first communication timing and the second communication timing collide, the communication unit simultaneously transmits or receives the first channel or the first signal and the second channel or the second signal. A terminal is provided. [Effects of the Invention]

[0010] The disclosed technology provides a technology that enables a terminal to operate appropriately in a communication system in which both the terminal and the base station can simultaneously transmit and receive using the same resources. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. [Figure 3] FIG. 10 is a diagram for explaining Opt. A-1. [Figure 4] FIG. 10 is a diagram for explaining Opt. B-1. [Figure 5] FIG. 10 is a diagram for explaining Opt. A-2. [Figure 6] FIG. 10 is a diagram for explaining Opt. B-2. [Figure 7] FIG. 2 is a diagram illustrating a resource configuration assumed in an embodiment of the present invention. [Figure 8] FIG. 10 is a diagram for explaining a problem of the first embodiment. [Figure 9] FIG. 10 is a diagram for explaining a basic operation example. [Figure 10] FIG. 1 is a diagram for explaining a first embodiment. [Figure 11] FIG. 1 is a diagram for explaining a first embodiment. [Figure 12] FIG. 1 is a diagram for explaining a first embodiment. [Figure 13] FIG. 10 is a diagram for explaining a second embodiment. [Figure 14] FIG. 10 is a diagram for explaining a second embodiment. [Figure 15] FIG. 10 is a diagram for explaining a problem of the third embodiment. [Figure 16] FIG. 10 is a diagram for explaining a third embodiment. [Figure 17] 2 is a diagram illustrating an example of a functional configuration of a base station 10 according to an embodiment of the present invention. [Figure 18] FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal 20 according to the embodiment of the present invention. [Figure 19] 2 is a diagram illustrating an example of a hardware configuration of a base station 10 or a terminal 20 according to an embodiment of the present invention. [Figure 20] FIG. 1 is a diagram illustrating an example of the configuration of a vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0013] Existing technology is used as appropriate for the operation of the wireless communication system according to the embodiment of the present invention. The existing technology is, for example, the existing NR (e.g., Non-Patent Documents 1 and 2). The wireless communication system (base station 10 and terminal 20) according to the present embodiment can basically operate in accordance with existing regulations. However, in order to solve the problem, the base station 10 and terminal 20 also perform operations that are not in the existing regulations. In the description of the embodiment described below, operations that are not in the existing regulations will be mainly described. Note that all numerical values ​​described below are examples.

[0014] Furthermore, in the embodiments of the present invention, when radio parameters and the like are "configured," it may mean that predetermined values ​​are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are set.

[0015] (System configuration example)

[0016] Fig. 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. As shown in Fig. 1, the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0017] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in the time domain and the frequency domain.

[0018] OFDM is used as the radio access scheme. In the frequency domain, subcarrier spacing (SCS) of at least 15 kHz, 30 kHz, 120 kHz, and 240 kHz is supported. In this embodiment, larger SCS may be supported. Furthermore, regardless of the SCS, a resource block is formed by a predetermined number (e.g., 12) of consecutive subcarriers.

[0019] For example, when performing initial access to a cell, the terminal 20 detects an SSB (SS / PBCH block) and identifies the SCS in the PDCCH, PDSCH, PUCCH, etc. based on the PBCH included in the SSB.

[0020] In the time domain, a slot is made up of multiple OFDM symbols (for example, 14 symbols regardless of the subcarrier spacing). Hereinafter, an OFDM symbol is called a "symbol." A slot is a scheduling unit. Subframes of 1 ms duration are defined, and a frame consisting of 10 subframes is defined. The number of symbols per slot is not limited to 14. Frames with a definition different from the one defined above may also be used.

[0021] As shown in Fig. 1, a base station 10 transmits control information or data to a terminal 20 in a DL (Downlink) and receives control information or data from the terminal 20 in an UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Furthermore, both the base station 10 and the terminal 20 are capable of applying MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both the base station 10 and the terminal 20 may communicate via a SCell (Secondary Cell) and a PCell (Primary Cell) using CA (Carrier Aggregation).

[0022] Furthermore, base station 10 and terminal 20 of this embodiment can each transmit and receive using the same time / frequency resources, that is, base station 10 and terminal 20 each have a full-duplex function.

[0023] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, an M2M (Machine-to-Machine) communication module, etc. As shown in Fig. 1, the terminal 20 receives control information or data from the base station 10 via DL and transmits control information or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system.

[0024] FIG. 2 shows an example of the configuration of a wireless communication system when DC (e.g., NR-Dual connectivity) is implemented. As shown in FIG. 2, a base station 10A serving as a Master Node (MN) and a base station 10B serving as a Secondary Node (SN) are provided. The base station 10A and the base station 10B are each connected to a core network. The terminal 20 communicates with both the base station 10A and the base station 10B.

[0025] A cell group provided by the base station 10A, which is an MN, is called an MCG (Master Cell Group), and a cell group provided by the base station 10B, which is an SN, is called an SCG (Secondary Cell Group). A PCell in an MCG (Master Cell Group) may be called a PSCell. The operation in this embodiment may be performed in either the configuration of FIG. 1 or FIG. 2. Furthermore, the DC may be an NR-NR DC, an NR-LTE DC, or a DC other than these.

[0026] Furthermore, in DC, when CCs are multiplexed among multiple base stations for transmission and reception, this may also be called “carrier aggregation.” Furthermore, in this application, CCs and cells may be treated as synonyms.

[0027] In the wireless communication system according to the present embodiment, when an unlicensed band is used, LBT (Listen Before Talk) is executed. 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.

[0028] (About duplexing methods) This article explains the current status of the introduction and consideration of duplexing methods for 4G, 5G, 6G, etc. For 4G, systems have been put into practical use by primarily using FDD, and also support TDD. For 5G, TDD is being primarily considered, but FDD is also supported. For example, migration of FDD LTE bands to 5G is underway.

[0029] FDD has the advantage of being able to simultaneously communicate in both DL and UL, which reduces latency. However, it has the disadvantage of having a fixed DL / UL resource ratio (e.g., 1:1).

[0030] One advantage of TDD is that it is easy to change the amount of DL and UL resources. For example, in a typical environment with high DL traffic, increasing DL time resources can improve DL throughput. However, with TDD, increasing DL time resources reduces UL time resources, which can result in degradation of delay performance and UL coverage.

[0031] Cross division duplex (XDD) and full duplex (FD) are being considered for 5G-advanced / 6G with the aim of incorporating the advantages of both FDD and TDD while eliminating their disadvantages.

[0032] XDD refers to simultaneous transmission and reception at the same time and using adjacent frequency resources at a base station / terminal. Note that "base station / terminal" refers to "a base station, a terminal, or both a base station and a terminal."

[0033] FD means that a base station / terminal can transmit and receive simultaneously using the same frequency and time resources.

[0034] Opt.A-1, Opt.A-2, Opt.B-1, and Opt.B-2, which are system configuration examples for FD, will be described with reference to Figures 3 to 6. Opt.A-1, Opt.A-2, Opt.B-1, and Opt.B-2 are system configuration examples classified from the perspective of UL and DL frequency resource allocation and whether or not the base station (gNB) / terminal (UE) supports FD.

[0035] Opt.A-1 / B-1 is a system in which frequency resources do not overlap between DL and UL, and may be called subband-based FD. Opt.A-2 / B-2 is a system in which frequency resources overlap between DL and UL, and may be called spectrum-sharing FD. Opt.A-1, Opt.A-2, Opt.B-1, and Opt.B-2 will be described below. In each diagram describing these, the left side of the diagram shows UL and DL communication between the base station 10 and the terminal 20, and the right side of the diagram shows the allocation of UL and DL frequency resources.

[0036] Fig. 3 shows an example of a system configuration in Opt. A-1. As shown in Fig. 3, frequency resources are divided into DL and UL. Furthermore, only one-way communication is assumed for the same terminal at the same time. Fig. 3 shows that terminal 20B performs UL communication and terminal 20A performs DL communication at the same time. In Opt. A-1, information indicating which frequency resource is DL or UL at what time is set for each system. The system here is a system having base station 10 and terminal 20.

[0037] The differences between Opt.A-1 and FDD are that Opt.A-1 allows DL only or UL only, and there is a gap distance between each band.

[0038] Figure 4 shows an example of a system configuration for Opt.B-1. As shown in Figure 4, frequency resources are divided into DL and UL. Bidirectional communication is assumed for the same terminal at the same time. In Opt.B-1, information indicating which frequency resources are DL or UL at which times is set for each system.

[0039] Figure 5 shows an example of a system configuration for Opt. A-2. As shown in Figure 5, frequency resources overlap between DL and UL. However, only one-way communication is assumed for the same terminal at the same time. In Opt. A-2, information indicating which frequency resource is DL or UL at what time is set for each system or terminal. However, by clarifying the operation in the event of collision, it is also possible not to set information (which may be called a pattern) indicating which frequency resource is DL or UL at what time.

[0040] Figure 6 shows an example of a system configuration for Opt. B-2. As shown in Figure 6, frequency resources overlap between DL and UL. Bidirectional communication is assumed for the same terminal at the same time. In Opt. B-2, information indicating which frequency resource is DL or UL at what time may be set for each system or terminal, or information indicating which frequency resource is DL or UL at what time may not be set.

[0041] (System configuration assumed in this embodiment) In this embodiment (including the first to third embodiments described later), Opt. B-2 shown in Fig. 6 is assumed. However, the application of the technology in this embodiment is not limited to Opt. B-2, and the technology in this embodiment may be applied to systems with other options.

[0042] In the following description, "channel / signal" means "channel, or signal, or both channel and signal." Furthermore, in this specification, expressions such as transmitting a channel / signal and receiving a channel / signal are used. Here, "transmitting a channel" may be rephrased as transmitting data (or information, or signal) using a channel. Furthermore, "receiving a channel" may be rephrased as receiving data (or information, or signal) using a channel.

[0043] Also, "time / frequency" means "time, or frequency, or both time and frequency." "Resource" means "time / frequency resource" unless otherwise clear from the context. "Transmit / Receive" means "transmitting, or receiving, or both transmitting and receiving." "Transmit / Receive" may be replaced with "transmitting and receiving" or "communication." "DL / UL" means "DL, or UL, or both DL and UL."

[0044] The first, second, and third embodiments will be described below. The first, second, and third embodiments can be implemented in any combination. The issues and operations of each embodiment will be described.

[0045] (Problem of the first embodiment) In Opt. B-2, which is a premise of the present embodiment (first to third embodiments), it is basically assumed that frequency resources overlap in DL and DL, and the same terminal performs bidirectional communication. More specifically, as shown in Fig. 7, from the system viewpoint (base station viewpoint), full duplex is assumed, but it is possible to configure which frequency resources are DL / UL for each terminal. In the first embodiment, such configuration is assumed.

[0046] In this case, depending on the DL / UL settings for each terminal, it may be impossible to transmit or receive channels / signals (e.g., SSB, CORESET#0, SIB, type0 / 1 / 2 / 3 CSS, RACH preamble, PUCCH before RRC connection, etc.) that are transmitted or received using cell-common time / frequency resource settings. "Cell-common" means common within a cell formed by base station 10. However, this embodiment is not limited to "cell-common," and for example, "cell-common" may be replaced with "group-common." "Group-common" means common within a group consisting of multiple terminals.

[0047] An example will be described with reference to Fig. 8. When a cell-common DL channel / signal is transmitted from base station 10 using cell-common resource A, UE1, which has resources including resource A configured as DL resources, can receive the channel / signal. However, resource A is not configured as a DL resource for UE2, so UE2 cannot receive the channel / signal.

[0048] Even when the resources to be used as DL / UL are set for each terminal, each terminal must be able to transmit and receive channels / signals common to the cell.

[0049] (Operation of the first embodiment) Therefore, in the first embodiment, an operation when setting resources for channels / signals common to cells in accordance with the DL / UL setting of the terminal 20 will be described.

[0050] In the first embodiment, it is possible to set which time / frequency resources are to be DL or UL for each terminal. In this specification, information indicating which time / frequency resources are to be DL / UL is called an "FDD / XDD pattern." Also, "time / frequency resources" means "time resources, or frequency resources, or time-frequency resources."

[0051] First, a basic operation example including setting of the FDD / XDD pattern will be described with reference to Fig. 9. The operation in Fig. 9 can also be applied to the second and third embodiments.

[0052] 9, the terminal 20 transmits capability information (UE capability) to the base station 10. The capability information transmitted in S101 is, for example, information on the UL / DL bandwidth supported by the terminal 20. Note that S101 may not be performed.

[0053] In S102, the base station 10 notifies / configures the terminal 20 of an FDD / XDD pattern. This FDD / XDD pattern includes, for example, information indicating the UL and DL time / frequency resources that the terminal 20 can use. "Notification / configuration" means "notification, or configuration, or both notification and configuration." Notification, for example, refers to instruction by DCI, MAC CE, etc. Configuration, for example, refers to configuration by RRC signaling.

[0054] In S103, the terminal 20 performs an operation based on the FDD / XDD pattern. In S103, for example, the operations described in the second and third embodiments described later are performed.

[0055] Terminal 20 does not assume reception of channels / signals in time / frequency resources outside the DL time / frequency resources notified / configured in S102. Furthermore, terminal 20 does not assume transmission of channels / signals in time / frequency resources outside the UL time / frequency resources notified / configured in S102.

[0056] However, the terminal 20 may also measure a reference signal, a synchronization signal, or the like in a time / frequency resource outside the notified / configured DL time / frequency resource. The terminal 20 reports the measurement result to the base station 10, and the base station 10 may configure the terminal 20 with a DL time / frequency resource (referred to as a new DL time / frequency resource) that is different from the DL time / frequency resource that has already been configured. After receiving this configuration, the terminal 20 performs DL reception using the new DL time / frequency resource.

[0057] <FDD / XDDパターンについて> The FDD / XDD pattern notified / set by the base station 10 to the terminal 20 may be different for each individual terminal, different for each group of terminals, or common to all terminals in the cell, both at the time of initial access and after initial access.

[0058] Furthermore, the FDD / XDD pattern notified / set from base station 10 to terminal 20 may be common to all terminals within the cell at the time of initial access, but may be different for each terminal after initial access.

[0059] The FDD / XDD pattern to be used during initial access is notified / set by base station 10 to terminal 20 using either or both of DCI and SIB at the start of initial access (or before the start), for example.

[0060] The FDD / XDD pattern to be used after initial access may be notified / configured from base station 10 to terminal 20 by either or both of DCI and higher layer parameters. The higher layer parameters may be notified / configured by RRC signaling or MAC CE.

[0061] In either of the above cases, the base station 10 may notify / set to the terminal 20 an FDD / XDD pattern according to the capability information reported by the terminal 20 to the base station 10. For example, the maximum bandwidth values ​​supported by the terminal 20 for each of DL and UL are reported to the base station 10 as capability information, and the base station 10 notifies / sets to the terminal 20 an FDD / XDD pattern with a bandwidth equal to or less than that bandwidth.

[0062] Alternatively, multiple FDD / XDD patterns may be configured for terminal 20 by base station 10, and terminal 20 may select an appropriate configuration depending on its own capabilities. For example, when multiple FDD / XDD patterns for multiple bandwidths are notified / configured, terminal 20 selects an FDD / XDD pattern with a bandwidth equal to or less than the bandwidth supported by terminal 20 itself.

[0063] <Cell common channel / signal resources> In the case where the FDD / XDD pattern notified / set from base station 10 to terminal 20 differs for each terminal, it is assumed that terminal 20 is notified / set with the time / frequency resources of the channel / signal common to the cell in accordance with the setting of its own FDD / XDD pattern. "Assuming" means, for example, receiving (or searching) information on the time / frequency resources transmitted from base station 10 at the timing when the time / frequency resources of the channel / signal common to the cell are notified / set.

[0064] 9, the base station 10 notifies / configures the terminal 20 of the FDD / XDD pattern as well as the time / frequency resources of the cell-common channels / signals corresponding to the FDD / XDD pattern. The terminal 20 transmits and receives the cell-common channels / signals using the time / frequency resources of the cell-common channels / signals.

[0065] Note that the FDD / XDD pattern and the time / frequency resources of the cell-common channel / signal may be notified / configured separately. From the viewpoint of base station 10, base station 10 determines the time / frequency resources of the cell-common channel or signal based on the FDD / XDD pattern for terminal 20, and notifies / configures them to terminal 20.

[0066] The cell common channel / signal may be at least one of SSB / SIB / RACH occasion / PUCCH before RRC connection / type 0, 0A, 1, 2, 3-PDCCH CSS, or other channels / signals.

[0067] Figure 10 shows an example of the configuration of FDD / XDD patterns and cell-common channel / signal time / frequency resources for UE1 and UE2. In the example of Figure 10, the time / frequency resources indicated by A are DL resources for UE1 and UL resources for UE2. Furthermore, the time / frequency resources indicated by B are UL resources for UE1 and DL resources for UE2.

[0068] For UE1 (or a UE group including UE1), the resources indicated by A1 are notified / configured as resources for DL ​​cell common channels / signals, and the resources indicated by B1 are notified / configured as resources for UL cell common channels / signals. For UE2 (or a UE group including UE2), the resources indicated by A2 are notified / configured as resources for UL cell common channels / signals, and the resources indicated by B2 are notified / configured as resources for DL ​​cell common channels / signals.

[0069] UE1 receives the DL cell common channel / signal on resource A1 and transmits the UL cell common channel / signal on resource B1. UE2 receives the UL cell common channel / signal on resource A2 and receives the DL cell common channel / signal on resource B2.

[0070] <Cell common channel / signal resource configuration / notification method> The time / frequency resources of the cell common channel / signal used in initial access are notified / configured from the base station 10 to the terminal 20 by, for example, either or both of the DCI and the SIB.

[0071] The time / frequency resources of the cell common channels / signals after initial access may be notified / configured from the base station 10 to the terminal 20 by either or both of DCI and higher layer parameters. The higher layer parameters may be notified by RRC signaling or MAC CE.

[0072] In either case, the base station 10 may notify / configure to the terminal 20 the time / frequency resources of the cell common channel / signal according to the capability information reported by the terminal 20 to the base station 10 .

[0073] Furthermore, for a certain cell common channel / signal, multiple time / frequency resources may be configured for terminal 20 by base station 10, and terminal 20 may select an appropriate time / frequency resource in accordance with its own FDD / XDD pattern configuration.

[0074] Furthermore, for a certain cell-common channel / signal, only some of the multiple parameters specifying time / frequency resources may be notified / configured for each terminal. For example, only parameters related to frequency resources may be configured for each terminal, and other parameters (time resources, period, etc.) may be configured to be common between terminals. Parameters common between terminals may be defined in specifications, and may not be notified / configured from base station 10 to terminal 20.

[0075] Furthermore, after multiple parameters common to terminals are notified / configured from base station 10 to terminal 20, some of the multiple parameters may be overwritten (updated) with either or both of DCI and higher layer parameters.

[0076] <Examples of other cell common channel signal resources> For example, if the time / frequency resources for a certain cell common channel / signal have already been defined, the base station 10 may notify / set the DL / UL time / frequency resources to each terminal in accordance with the time / frequency resources.

[0077] Furthermore, DL / UL time / frequency resources may be shared between terminals, and cell common channels / signals may be transmitted and received using the shared resources.

[0078] The DL / UL time / frequency resources shared between terminals for transmitting and receiving cell common channels / signals may be notified / configured from the base station 10 to the terminal 20, or may be specified in the specifications and not be notified / configured from the base station 10 to the terminal 20. Furthermore, with regard to the DL / UL time / frequency resources shared between terminals, each terminal may be able to use the time / frequency resources temporarily, periodically, or constantly.

[0079] Each terminal transmits and receives cell common channels / signals using DL / UL time / frequency resources shared between terminals.

[0080] Figures 11 and 12 show examples of DL resources shared between terminals in the same FDD / XDD pattern as the FDD / XDD pattern shown in Figure 10. In the example of Figure 11, DL resource C is configured to overlap with DL resource A and UL resource B configured for UE1. The same is true for UE2.

[0081] In the example of Fig. 12, DL resource D is configured in the frequency domain between DL resource A and UL resource B configured for UE1. The same applies to UE2.

[0082] <Effects of the first embodiment> The technology according to the first embodiment allows each terminal to appropriately transmit and receive cell-common channels / signals even when the FDD / XDD pattern is notified / configured.

[0083] (Problem of the second embodiment) Next, a second embodiment will be described. First, a problem will be described. When the DL / UL time / frequency resources of each terminal are configured to match the time / frequency resources of the cell-common channel / signal, as in the case shown in Figs. 11 and 12 of the first embodiment, there may be a case where the time / frequency resources of the UE-specific channel / signal scheduled / configured in advance in terminal 20 overlap with the time / frequency resources of the cell-common channel / signal. When resource overlap occurs in this way, there is a possibility that one of the channels / signals cannot be transmitted or received.

[0084] In addition, there may be cases where no time / frequency resource is set as DL / UL in Opt.B-2. For example, there may be cases where DL / UL frequency resources overlap from the system perspective and the UE perspective.

[0085] Here, Opt.B-2 assumes that each terminal supports FD (full duplex), but when transmitting and receiving simultaneously on DL and UL, it may be necessary to consider restrictions due to analog beams or power control, etc. In other words, there is a possibility that terminal 20 may not be able to properly perform simultaneous transmission and reception on DL and UL due to restrictions.

[0086] As described above, in this embodiment assuming Opt. B-2, collisions between DL reception and DL reception (DL-DL collision), collisions between UL transmission and UL transmission (UL-UL collision), and collisions between DL reception and UL transmission (DL-UL collision) may occur within terminal 20, but the behavior in the event of a collision is not clear.

[0087] (Operation of the second embodiment) In the second embodiment, an operation when DL-DL / UL-UL / DL-UL collision occurs within the terminal 20 will be described. More specifically, an operation when DL-DL / UL-UL / DL-UL transmission / reception timing collision occurs will be described. Note that a transmission / reception timing collision may be rephrased as a communication timing collision. Also, a channel / signal transmission / reception timing collision may be rephrased as a channel / signal collision.

[0088] The operation of the second embodiment corresponds to, for example, the operation in S103 in the sequence shown in FIG. 9 after notification / setting of the FDD / XDD pattern and cell common channels / signal resources in S102.

[0089] Furthermore, the operation of the second embodiment may be an operation when the FDD / XDD pattern is not notified / set.

[0090] That is, the operation of the second embodiment may be an operation that is premised on the first embodiment, or may be an independent operation that is not premised on the first embodiment.

[0091] <Definition of transmission / reception timing collision> The terminal 20 can determine that a transmission / reception timing collision has occurred when either of the following cases of Options 1 and 2 occurs. In the following, the terminal 20 is the subject of the determination, but the base station 10 can also make the same determination.

[0092] Opt.1: In any case of DL-DL, UL-UL, or DL-UL, terminal 20 determines that a transmission / reception timing collision has occurred when the time resources for transmitting / receiving channels / signals overlap at least partially.

[0093] An example of Opt.1 is shown on the left side of Fig. 13. Here, an example is shown in which a collision occurs between DL resource A and UL resource B.

[0094] Opt.2: In any of the cases of DL-DL, UL-UL, and DL-UL, even if the time resources for transmitting and receiving channels / signals do not overlap, it may be determined that a transmission / reception timing collision has occurred.

[0095] For example, terminal 20 determines that a collision of transmission and reception timing has occurred when the interval between successively transmitting and receiving channels / signals is insufficient between DL and DL, UL and UL, or DL ​​and UL. "Insufficient interval" means, for example, that the interval is equal to or less than threshold value X. X may be in units of ms, symbols, slots, or other units.

[0096] An example of Opt.2 is shown on the right side of Fig. 13. Here, it is assumed that the interval Y between DL resource A and UL resource B is equal to or less than the threshold X.

[0097] In addition, in any case of DL-DL, UL-UL, or DL-UL, the spacing between resources may be the length from the end of the first resource to the start of the next resource, or the length from the center of the first resource to the center of the next resource, as shown on the right side of Figure 13, or it may be some other length.

[0098] The resources for which collisions are to be determined may be resources autonomously selected by the terminal 20, may be predefined resources for transmitting / receiving channels / signals, or may be resources allocated by the base station 10 via DCI or the like.

[0099] For example, in the example of Figure 13, if UL resource B and DL resource A are both resources allocated by base station 10 using configuration information or control information, terminal 20 can determine whether or not a collision will occur from the configuration information or control information.

[0100] Also, for example, if either or both of UL resource B and DL resource A are predefined, periodically arriving resources, terminal 20 may determine that a collision will occur at one timing and that a collision will not occur at another timing.

[0101] <Differences in operation regarding channel / signal types> In any case of DL-DL, UL-UL, or DL-UL collisions, different operations are specified (or notified / configured by base station 10) depending on which channels / signals collide, and terminal 20 may operate in accordance with those specifications (or notified / configured).

[0102] For example, in a time interval in which terminal 20 is measuring DL signals such as SSB or CSI-RS, terminal 20 does not need to assume UL transmission. Terminal 20 does not perform UL transmission in a time interval in which terminal 20 is measuring DL signals such as SSB or CSI-RS (or an interval within threshold X from this time interval), and therefore it can be determined that no UL collision will occur in this time interval (or an interval within threshold X from this time interval).

[0103] <Differences in behavior depending on device capabilities> In any of the cases of DL-DL, UL-UL, and DL-UL, different operations may be defined (or notified / configured) depending on the capabilities of the terminal 20.

[0104] For example, for one or more of DL-DL, UL-UL, and DL-UL, the terminal 20 reports UE capability indicating whether simultaneous transmission and reception without constraints is supported to the base station 10. For example, a terminal 20 that supports simultaneous transmission and reception without constraints may not assume collisions between channels / signals.

[0105] Furthermore, for example, for one or more of DL-DL, UL-UL, and DL-UL, the terminal 20 reports UE capability indicating which pairs of channels / signals the terminal 20 supports for simultaneous transmission and reception to the base station 10. For example, for pairs of channels / signals that support simultaneous transmission and reception, the terminal 20 may not assume collision between channels / signals.

[0106] <Actions in the event of a collision> In any of the cases of DL-DL, UL-UL, and DL-UL, when it is determined that a collision between channels / signals has occurred, the terminal 20 may perform either of the following operations, Opt. 1 or Opt. 2. The base station 10 may notify / set the terminal 20 as to which operation, Opt. 1 or Opt. 2, to perform.

[0107] In Opt.1, the terminal 20 may simultaneously transmit and receive both of the two colliding channels / signals. Opt.1-1 and Opt.1-2 will be described as more detailed examples of Opt.1. The base station 10 may notify / set the terminal 20 as to which of Opt.1-1 and Opt.1-2 to perform. Opt.1-1 and Opt.1-2 may also be implemented in combination. "Simultaneously transmitting and receiving both of the two colliding channels / signals" includes not only the case where two resources overlap as shown in Opt.1 of FIG. 13, but also the case where two resources are separated and a collision occurs as shown in Opt.2 of FIG. 13, in which transmission and reception are performed using these two resources.

[0108] <Opt.1-1> When simultaneously transmitting and receiving between UL-UL or DL-UL, terminal 20 may change the UL transmission power of at least one of the two colliding channels / signals from the UL transmission power of the channel / signal in the non-colliding section.

[0109] For example, if the channel / signal for which the UL transmission power is changed is channel C / signal C, terminal 20 increases (or decreases) the UL transmission power of channel C / signal C when there is a collision compared to the UL transmission power of channel C / signal C when there is no collision. Increasing the UL transmission power of a channel / signal makes it easier for base station 10 to receive the channel / signal. Reducing the UL transmission power of a channel / signal can reduce interference with DL reception of other terminals caused by the channel / signal.

[0110] Furthermore, a power control formula to be applied when simultaneously transmitting and receiving between UL and UL or between DL and UL may be defined in the specifications, or may be notified from base station 10 to terminal 20 by higher layer signaling (RRC, MAC CE, etc.). Furthermore, a term that takes into account DL-UL interference (DL-UL collision) may be added to the power control formula. Furthermore, a term that takes into account UL-UL interference (UL-UL collision) may be added to the power control formula.

[0111] For example, when DL-UL interference is confirmed, terminal 20 dynamically increases the transmission power by X dBm after N symbols / slots or at the next transmission opportunity. Alternatively, when DL-UL interference is confirmed, terminal 20 may dynamically increase the transmission power by X dBm after N symbols / slots or at the next transmission opportunity. The operation of increasing the transmission power by X dBm is assumed to be a cumulative operation like a TPC command.

[0112] Note that N above is an integer equal to or greater than 0. X is a real number. X may be negative. A negative X corresponds to a reduction in transmission power. Both N and X may be defined in the specifications, or may be notified / set from the base station 10 to the terminal 20.

[0113] Furthermore, in order to reduce power consumption, terminal 20 may dynamically reduce the UL transmission power for sections that do not collide with DL reception. This operation may be performed by assuming that the term that takes into account DL-UL interference in the above power control equation is invalid or zero.

[0114] <Opt.1-2> Next, Opt.1-2 will be described. In any of the cases of DL-DL, UL-UL, and DL-UL, when terminal 20 transmits and receives two channels / signals simultaneously, it may change the transmission / reception beam of at least one of the two colliding channels / signals from the transmission / reception beam when there is no collision. For example, when transmitting and receiving two channels / signals simultaneously, if there is a constraint that the two beams must be the same, it may be possible to change the two beams so that they are the same.

[0115] Regarding the method of selecting a beam when changing, candidate beams to change to may be set / notified in advance, and terminal 20 may select one beam from the candidates to change. The candidate beam to change to may be specified in the specifications, may be notified by DCI / higher layer parameters, or may be a combination of these. When a beam is specified / notified / set, the beam may be specified by an SSB index or an index of a reference signal such as CSR-RS.

[0116] Furthermore, if the DL and UL beams are different in the absence of a collision, in the event of a collision between the DL and UL, the terminal 20 may change the UL beam so that the DL and UL beams become the same. The DL and UL beams becoming the same may mean that beam correspondence is established between the DL and UL.

[0117] When changing the transmission beam of a UL channel / signal (beam switching), terminal 20 may change the time resource for UL transmission from the scheduled or set time resource, taking into account the interval / time required for beam switching. In this case, terminal 20 transmits using the changed beam in the changed time resource.

[0118] An example of DL and UL collision is shown in Figure 14. In Figure 14, the originally scheduled / set UL resource A is changed to UL transmission resource B after the beam switching period / time.

[0119] The size of the beam switching period / time may be specified in the specifications, signaled by higher layer parameters, reported by UE capability, or a combination of these. The unit of the beam switching period / time to be specified / signaled / configured / reported may be ms, symbol, slot, or other.

[0120] Furthermore, the changed UL resources that are changed taking into account the beam switching interval / time may be resources that are autonomously selected by the terminal 20, may be predefined resources for transmitting channels / signals, or may be resources that are assigned by the base station 10 using DCI or the like.

[0121] <Opt.2> Next, Opt. 2 will be described. In Opt. 2, the priorities of the two colliding channels / signals are defined / set, and the terminal 20 may not transmit / receive either the channel / signal with the higher (or lower) priority. Not transmitting / receiving a channel / signal may be expressed as dropping the channel / signal.

[0122] The priority may be defined in the specifications, or may be notified from the base station 10 to the terminal 20 by DCI / higher layer signaling, or may be a combination of these.

[0123] For example, the priority between the following channels / signals may be defined / signaled / set:

[0124] ·Scheduled DL(eg,Dynamic PDSCH,CSI-RS) and configured UL(eg,SRS,PUCCH,CG PUSCH,RACH occasion) ·Scheduled DL(eg,Dynamic PDSCH,CSI-RS) and scheduled UL(eg,dynamic PUSCH,PUCCH) ·Configured DL(eg,PDCCH,SPS PDSCH) and configured UL(eg,SRS,PUCCH,CG PUSCH,RACH occasion) ·Configured DL(eg,PDCCH,SPS PDSCH) and scheduled UL(eg,dynamic PUSCH,PUCCH) ·SSB and UL (eg, PUSCH, PUCCH, PRACH, SRS) ·DL(eg,PDSCH,PDCCH,CSI-RS) and RACH occasion ·DL and DL (eg, SSB, PDSCH, PDCCH, between CSI-RS) · Between UL and UL (eg, PUSCH, PUCCH, SRS, RACH) For channels / signals that were not transmitted / received during the collision, the transmission / reception resources related to the collision may be changed, and transmission / reception may be performed using the changed resources. The changed resources may be specified in the specifications, may be notified by higher layer signaling, or may be notified by DCI.

[0125] In any of the above cases, the time / frequency resource after the change may be a time / frequency resource shifted by n slots from the slot of the time / frequency resource before the change (the scheduled / configured time / frequency resource). n is, for example, an integer equal to or greater than 0. n may be specified in the specifications, or may be notified by higher layer signaling, or may be notified by DCI.

[0126] <Effects of the second embodiment> The technology of the second embodiment allows the terminal to operate appropriately even in the event of a collision in communication timing.

[0127] (Problem of the third embodiment) Next, a third embodiment will be described. The third embodiment may be implemented in combination with either one or both of the first and second embodiments, or may be implemented independently. First, the problem will be described.

[0128] In the existing specifications, the terminal 20 determines its UL transmission timing so as to be synchronized with the DL and UL frame timing in the base station 10.

[0129] Specifically, a TA (timing advance) command is notified from base station 10 to terminal 20 for UL transmission timing control of terminal 20, and terminal 20 determines the UL transmission timing using a TA offset based on the notified information. It is assumed that terminal 20 receives the TA command via RAR or MAC-CE.

[0130] An example of using a TA offset is shown in Fig. 15. In the example of Fig. 15, the terminal 20 transmits (Tx) a TA offset before the reception (Rx) timing so that the reception and transmission frame timings are aligned at the base station 10.

[0131] On the other hand, in a system that supports FD, the base station 10 can also perform scheduling without considering TA, and for example, it is possible for the terminal 20 to determine the UL transmission timing so that the DL and UL frame timings are aligned in the terminal 20. An example of a case where the terminal 20 determines the UL transmission timing and performs transmission and reception so that the DL and UL frame timings are aligned is shown in Fig. 16.

[0132] That is, in the third embodiment, it is assumed that the terminal 20 determines the UL transmission timing without taking the TA offset into consideration. However, the operation regarding UL transmission when the TA is not taken into consideration is not clear.

[0133] (Operation of the third embodiment) In the third embodiment, it is assumed that the terminal 20 is not notified of a TA command by the base station 10. Alternatively, it is assumed that the terminal 20 determines the UL transmission timing without applying the TA offset notified by the base station 10. In other words, the terminal 20 determines the UL transmission timing of the channel / signal without applying the TA offset.

[0134] The terminal 20 may not apply a TA offset to any channel / signal, or may apply or not apply a TA offset depending on the channel / signal.

[0135] The TA offset to be applied to the UL transmission of which channel / signal may be specified in the specifications, may be notified from the base station 10 to the terminal 20 by higher layer signaling (e.g., RRC, MAC CE), may be notified from the base station 10 to the terminal 20 by DCI, or may be a combination of these.

[0136] For example, when channels / signals related to UL transmission are multiplexed between terminal 20 and other terminals, the UL transmission timing is determined by applying a TA offset so that the reception timings of UL signals from these multiple terminals are aligned at base station 10. On the other hand, the UL transmission timing for other UL transmissions is determined without taking the TA offset into consideration.

[0137] Furthermore, a UE capability indicating whether or not the operation of determining the UL transmission timing without considering the TA offset is supported may be defined, and the terminal 20 may report the UE capability to the base station 10.

[0138] <Effects of the third embodiment> The technology according to the third embodiment allows the terminal 20 to appropriately perform UL transmission without taking TA into consideration.

[0139] (Device configuration) Next, an example of the functional configuration of the base station 10 and the terminal 20 that execute the processes and operations described above will be described.

[0140] <Base station 10> Fig. 17 is a diagram showing an example of the functional configuration of the base station 10. As shown in Fig. 17, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Fig. 17 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations according to the embodiment of the present invention. Furthermore, the transmitting unit 110 and the receiving unit 120 may be collectively referred to as a communication unit.

[0141] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly. The receiver 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of a higher layer from the received signals. The transmitter 110 also has a function of transmitting, to the terminal 20, an NR-PSS, an NR-SSS, an NR-PBCH, a DL / UL control signal, DCI via a PDCCH, data via a PDSCH, and the like.

[0142] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device provided in the setting unit 130, and reads out the information from the storage device as needed.

[0143] The control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110. The control unit 140 also includes a function for performing LBT. The functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the reception unit 120. The transmission unit 110 may also be called a transmitter, and the reception unit 120 may also be called a receiver. The control unit 140 may also be called a processor.

[0144] <Terminal 20> Fig. 18 is a diagram showing an example of the functional configuration of the terminal 20. As shown in Fig. 18, the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 18 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention. The transmitting unit 210 and the receiving unit 220 may be collectively referred to as a communication unit.

[0145] The transmitter 210 creates a transmission signal from transmission data and transmits the transmission signal wirelessly. The receiver 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal. The receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, DCI via PDCCH, data via PDSCH, and the like transmitted from the base station 10. For example, the transmitter 210 may transmit a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), and the like to another terminal 20 as D2D communication, and the receiver 120 may receive the PSCCH, PSSCH, PSDCH, PSBCH, and the like from the other terminal 20.

[0146] The setting unit 230 stores various pieces of setting information received from the base station 10 or other terminals by the receiving unit 220 in a storage device provided in the setting unit 230, and reads the information from the storage device as needed. The setting unit 230 also stores setting information that is set in advance.

[0147] The control unit 240 controls the terminal 20. The control unit 240 can control the communication operations performed by the communication unit. A functional unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the reception unit 220. Alternatively, the transmission unit 210 may be called a transmitter, and the reception unit 220 may be called a receiver. Alternatively, the control unit 240 may be called a processor.

[0148] <Appendix 1> In relation to the first and third embodiments, at least the terminals and base stations shown in the following items 1 to 6 are provided. (Section 1) a communication unit that communicates with a base station that can transmit and receive using the same resources based on the settings of uplink resources and downlink resources; A control unit that assumes that specific resources, which are resources of channels or signals common to the cells, are notified or configured according to the configuration; A terminal comprising: (Section 2) The specific resource used at the time of initial access and the specific resource used after initial access are notified or set to the terminal by different methods. 1. The terminal described in paragraph 1. (Section 3) When a plurality of specific resources are notified to or configured in the terminal, the control unit selects a specific resource to be used from the plurality of specific resources based on the uplink resource or the downlink resource. 2. A terminal according to claim 1 or 2. (Section 4) After the specific resource is notified or set to the terminal using a plurality of parameters, the communication unit receives the parameters related to the specific resource and updates some of the plurality of parameters with the received parameters. A terminal according to any one of paragraphs 1 to 3. (Section 5) The control unit determines the uplink transmission timing without applying a TA offset. A terminal according to any one of paragraphs 1 to 4. (Section 6) a communication unit that can transmit and receive data to and from a terminal using the same resources; a control unit that determines specific resources, which are resources for a cell-common channel or signal, based on the configuration of uplink resources and downlink resources for the terminal; A base station comprising:

[0149] Any of the above items 1 to 6 provides a technology that enables a terminal to operate appropriately in a communication system in which both the terminal and the base station can simultaneously transmit and receive using the same resources. In particular, the above item 2 allows resources to be appropriately set during and after initial access. The above item 3 allows a terminal to appropriately select a specific resource that is a channel or signal resource common to the cell. The above item 4 allows parameters of a specific resource to be efficiently set.

[0150] <Appendix 2> In relation to the second embodiment, at least the terminal and communication system shown in the following items 1 to 6 are provided. (Section 1) a communication unit that communicates with a base station that can transmit and receive using the same resources; a control unit that determines whether a first communication timing, which is a communication timing of a first channel or a first signal, and a second communication timing, which is a communication timing of a second channel or a second signal, collide with each other; When the first communication timing and the second communication timing collide, the communication unit simultaneously transmits or receives the first channel or the first signal and the second channel or the second signal. Terminal. (Section 2) The control unit If there is an overlap between the time resource of the first channel or the first signal and the time resource of the second channel or the second signal, it is determined that the first communication timing and the second communication timing collide; or When a time width between a time resource of the first channel or the first signal and a time resource of the second channel or the second signal is equal to or less than a threshold, it is determined that the first communication timing and the second communication timing will collide. 1. The terminal described in paragraph 1. (Section 3) When the first communication timing and the second communication timing collide, the communication unit changes transmission power of at least one of the first channel or the first signal and the second channel or the second signal from transmission power when there is no collision. 2. A terminal according to claim 1 or 2. (Section 4) When the first communication timing and the second communication timing collide, the communication unit changes a beam of at least one of the first channel or the first signal and the second channel or the second signal from a beam when there is no collision. A terminal according to any one of paragraphs 1 to 3. (Section 5) a communication unit that communicates with a base station that can transmit and receive using the same resources; a control unit that determines whether a first communication timing, which is a communication timing of a first channel or a first signal, and a second communication timing, which is a communication timing of a second channel or a second signal, collide with each other; When the first communication timing and the second communication timing collide, the communication unit does not transmit or receive any one of the channels or signals based on the priority of the first channel or the first signal and the priority of the second channel or the second signal. Terminal. (Section 6) a communication unit that communicates with a base station that can transmit and receive using the same resources; a control unit that determines whether a first communication timing, which is a communication timing of a first channel or a first signal, and a second communication timing, which is a communication timing of a second channel or a second signal, collide with each other; When the first communication timing and the second communication timing collide, the communication unit simultaneously transmits or receives the first channel or the first signal and the second channel or the second signal. A terminal and the base station including a transmission unit that notifies or sets an operation to be performed when the first communication timing and the second communication timing collide with each other, to the terminal; A communication system comprising:

[0151] Any of the first to sixth paragraphs provides a technology that enables a terminal to operate appropriately in a communication system in which both the terminal and the base station can simultaneously transmit and receive using the same resources. In particular, the second paragraph makes it possible to appropriately determine whether a collision has occurred. The third paragraph makes it possible to perform appropriate communication by changing the transmission power in the event of a collision. The fourth paragraph makes it possible to perform appropriate communication by changing the beam in the event of a collision.

[0152] (Hardware configuration) The block diagrams (FIGS. 17 and 18) used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining the single device or the multiple devices with software.

[0153] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocation, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0154] For example, the base station 10, the terminal 20, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 19 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the 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, etc.

[0155] In the following description, the term "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0156] Each function in the base station 10 and the terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0157] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0158] Furthermore, 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 into the storage device 1002, and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 140 of the base station 10 shown in FIG. 17 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. Furthermore, for example, the control unit 240 of the terminal 20 shown in FIG. 18 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may be transmitted from a network via a telecommunications line.

[0159] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory, etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0160] The secondary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, etc. The above-mentioned storage medium may be, for example, a database, a server, or other suitable medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0161] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0162] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0163] Furthermore, 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 each device.

[0164] Furthermore, base station 10 and terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

[0165] Furthermore, the terminal 20 or the base station 10 may be provided in a vehicle 2001. FIG. 20 shows a configuration example of the vehicle 2001. As shown in FIG. 20, the 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 the vehicle 2001, and may be applied to the communication module 2013, for example. The functions of the terminal 20 may be mounted in the communication module 2013. The functions of the base station 10 may be mounted in the communication module 2013.

[0166] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle), 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.

[0167] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0168] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a 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, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0169] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing various types of information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information obtained from external devices via the communication module 2013, etc., to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001.

[0170] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as a millimeter-wave radar, a LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, autonomous vehicle (AV) map, etc.), a gyro system (e.g., an IMU (Inertial Measurement Unit), an INS (Inertial Navigation System), etc.), an AI (Artificial Intelligence) chip, and an AI processor, as well as one or more ECUs that control these devices. The driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0171] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided in the vehicle 2001.

[0172] 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 the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0173] The communication module 2013 transmits, via wireless communication to an external device, a current signal from the current sensor that is input to the electronic control unit 2010. The communication module 2013 also transmits, via wireless communication to an external device, the rotation speed signals of the front and rear wheels acquired by a rotation speed sensor 2022, the air pressure signals of the front and rear wheels acquired by an air pressure sensor 2023, the vehicle speed signal acquired by a vehicle speed sensor 2024, the acceleration signal acquired by an acceleration sensor 2025, the accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, the brake pedal depression amount signal acquired by a brake pedal sensor 2026, the shift lever operation signal acquired by a shift lever sensor 2027, and the detection signals for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028, which are input to the electronic control unit 2010.

[0174] The communication module 2013 receives various information (traffic information, traffic signal information, inter-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The communication module 2013 also stores the various information received from the external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.

[0175] (Supplementary explanation of 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, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; two or more items may be combined as needed, and items described in one item may apply to items described in another item (unless inconsistent). The boundaries between functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of the processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams. However, such devices may be implemented using hardware, software, or a combination thereof. The software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

[0176] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination thereof. Furthermore, the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0177] Each aspect / embodiment described in the present disclosure may be applied to at least one of systems using LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication 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), or other appropriate systems, and next-generation systems extended based on these. Furthermore, a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G, etc.) may also be applied.

[0178] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

[0179] In this specification, a specific operation that is described as being performed by the base station 10 may also be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that 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 (such as, but not limited to, an MME, an S-GW, an AMF, an SMF, an LMF, etc.). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0180] The information or signals described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0181] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

[0182] In the present disclosure, the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0183] Software shall 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, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0184] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0185] 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 be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0186] Note that 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, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0187] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0188] Furthermore, 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. For example, a radio resource may be indicated by an index.

[0189] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0190] In this disclosure, terms such as "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," "cell group," "carrier," and "component carrier" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0191] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0192] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0193] 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 terminology.

[0194] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile body, or the mobile body itself. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0195] Furthermore, a base station in the present disclosure may be read as a terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a terminal is replaced with communication between a plurality of terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0196] Similarly, the term "terminal" in the present disclosure may be read as "base station." In this case, the base station may be configured to have the functions of the terminal described above.

[0197] As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may 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, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0198] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0199] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0200] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0201] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. 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, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0202] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0203] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0204] A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0205] Numerology may be communication parameters that apply to at least one of transmission and reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, and specific windowing operations performed by the transceiver in the time domain.

[0206] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0207] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0208] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0209] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, or the like instead of a subframe. Furthermore, one slot may be called a unit time. The unit time may differ for each cell depending on the numerology.

[0210] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0211] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0212] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0213] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0214] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0215] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0216] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0217] Note that one or more RBs may also 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.

[0218] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0219] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0220] 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 a UE within one carrier.

[0221] 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 the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0222] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely 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, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0223] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0224] 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 "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0225] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., by not notifying the predetermined information).

[0226] 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 herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure. [Explanation of symbols]

[0227] 10 base station 110 Transmitter 120 Receiver 130 Setting section 140 Control Unit 20 terminals 210 Transmitter 220 Receiving unit 230 Setting Section 240 Control Unit 1001 processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication equipment 1005 Input Device 1006 Output Device 2001 Vehicle 2002 Drive unit 2003 Steering Section 2004 accelerator pedal 2005 brake pedal 2006 Shift Lever 2007 front wheel 2008 rear wheel 2009 Axle 2010 Electronic Control Unit 2012 Information Services Department 2013 Communication Module 2021 Current Sensor 2022 RPM 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 Assistance Systems Department 2031 microprocessor 2032 memory (ROM, RAM) 2033 Communication port (IO port)

Claims

1. a communication unit that communicates with a base station that can transmit and receive using the same resources; a control unit that determines whether or not a first communication timing, which is a communication timing of a first channel or a first signal, and a second communication timing, which is a communication timing of a second channel or a second signal, collide with each other; When the first communication timing and the second communication timing collide, the communication unit simultaneously transmits or receives the first channel or the first signal and the second channel or the second signal. Terminal.

2. The control unit If there is an overlap between a time resource of the first channel or the first signal and a time resource of the second channel or the second signal, it is determined that the first communication timing and the second communication timing collide; or When a time width between a time resource of the first channel or the first signal and a time resource of the second channel or the second signal is equal to or less than a threshold, it is determined that the first communication timing and the second communication timing collide. The terminal according to claim 1 .

3. When the first communication timing and the second communication timing collide, the communication unit changes transmission power of at least one of the first channel or the first signal and the second channel or the second signal from transmission power when there is no collision.

3. The terminal according to claim 1 or 2.

4. When the first communication timing and the second communication timing collide, the communication unit changes a beam of at least one of the first channel or the first signal and the second channel or the second signal from a beam when there is no collision. A terminal according to any one of claims 1 to 3.

5. a communication unit that communicates with a base station that can transmit and receive using the same resources; a control unit that determines whether or not a first communication timing, which is a communication timing of a first channel or a first signal, and a second communication timing, which is a communication timing of a second channel or a second signal, collide with each other; When the first communication timing and the second communication timing collide, the communication unit does not transmit or receive any one of the channels or signals based on the priority of the first channel or the first signal and the priority of the second channel or the second signal. Terminal.

6. a communication unit that communicates with a base station that can transmit and receive using the same resources; a control unit that determines whether or not a first communication timing, which is a communication timing of a first channel or a first signal, and a second communication timing, which is a communication timing of a second channel or a second signal, collide with each other; When the first communication timing and the second communication timing collide, the communication unit simultaneously transmits or receives the first channel or the first signal and the second channel or the second signal. A terminal and the base station including a transmission unit that notifies or sets an operation to be performed when the first communication timing and the second communication timing collide with each other, to the terminal; A communication system comprising:

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