Terminal, communication system, and communication method

Abstract

To provide a technique for enabling a terminal to appropriately operate in a communication system in which the terminal performs only one way communication at the same time using a set UL resource or DL resource.SOLUTION: A terminal including a communication unit configured to communicate with a base station capable of performing transmission and reception in the same time-frequency resource based on a configuration of an uplink resource and a downlink resource, and a control unit configured to control an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource, in which the communication unit performs the uplink transmission and the downlink reception when the gap is larger than a configured or defined allowable gap.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a terminal in a wireless communication system, a communication system, and a communication method. [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 basically allows DL communication and UL communication to be performed at any timing, which has the advantage of low latency, 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 in which a base station performs both transmission and reception using the same time-frequency resources, and each terminal performs only one-way communication at the same time using configured UL or DL ​​resources. However, with existing technology, the terminal operation in such a communication method is unclear, and there is a possibility that the terminal may not operate properly in such a communication method.

[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 appropriately in a communication method in which the terminal performs only one-way communication at the same time using configured UL resources or DL ​​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 time-frequency resource based on the setting of uplink resources and downlink resources; a control unit that controls an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource, The communication unit If the gap is larger than a set or specified allowable gap, the uplink transmission and the downlink reception are performed. 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 method in which the terminal performs only one-way communication at the same time using configured UL resources or DL ​​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 basic operation example. [Figure 9] FIG. 10 is a diagram illustrating a comb type. [Figure 10] FIG. 10 is a diagram for explaining a second embodiment. [Figure 11] FIG. 10 is a diagram for explaining a second embodiment. [Figure 12] FIG. 10 is a diagram for explaining a third embodiment. [Figure 13] 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 14] 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 15] 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 16] 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, the base station 10 of this embodiment can perform transmission and reception using the same time and frequency resources, that is, the base station 10 has 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. However, resource patterns can be set for terminals based on the constraints of the terminals they accommodate.

[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. A-2 shown in Fig. 5 is assumed. However, the application of the technology in this embodiment is not limited to Opt. A-2, and the technology in this embodiment may be applied to systems with other options.

[0042] As explained with reference to Figure 5, in Opt.A-2, from a system perspective (viewing the entire system including the base station and terminals), frequency resources overlap between DL and DL, but the same terminal only performs one-way communication at the same time. At the base station, bidirectional communication at the same time is assumed. Regarding the allocation of frequency resources in Opt.A-2, there are, for example, Alt.1, Alt.2, and Alt.3 as shown in Figure 7.

[0043] In Alt.1, the system assumes that DL / UL overlap, partial DL / UL overlap, and no overlap will coexist in the time domain, and the resource pattern is set cell-specific. In Alt.2, which frequency resources will be used for DL / UL is set on a per-terminal basis. In Alt.3, no pattern is set, and the base station and terminal assume full DL / UL overlap.

[0044] In this embodiment, Alt.2 of the Alts shown in Fig. 7 is assumed. However, the application of the technology in this embodiment is not limited to Alt.2, and the technology in this embodiment may be applied to other Alts.

[0045] (About the assignment) In this embodiment, the case of Opt.A-2 (Alt.2) is assumed, in which DL and UL frequency resources are set for each terminal on a terminal-by-terminal basis. In Opt.A-2 (Alt.2), there is a problem that the following (1) to (3) are not clear.

[0046] (1) UE capability required to support Opt.A-2 (Alt.2) (2) Terminal operation to avoid DL-UL collision (3) Terminal operation during DL-UL collision In this embodiment, the operation that clarifies the above (1) to (3) will be described.

[0047] (Basic operation of the embodiment) An example of the basic operations of the base station 10 and the terminal 20 in this embodiment will be described with reference to FIG.

[0048] As described above, in this embodiment (including the first to third embodiments), Alt.2 in FIG. 7 is assumed, and UL and DL frequency resources do not overlap between terminals. Furthermore, each terminal performs unidirectional communication at the same time. That is, each terminal performs only UL transmission at one time and only DL reception at another time. Which frequency resources are UL and which are DL is set in advance for each terminal.

[0049] Also, here, the operation of Opt.A-2 (Alt.2) as described above may be called "XDD." Also, the operation of Opt.A-2 (Alt.2) may be called "FD." In other words, "XDD" in the following explanation may be replaced with "FD."

[0050] In the following description, "CH / Sig" means "channel, or signal, or both channel and signal." In addition, in this specification, expressions such as transmitting CH / Sig, receiving CH / Sig, and dropping CH / Sig are used. Here, "transmitting a channel" may be rephrased as transmitting data (or information, or signal) using a channel. Also, "receiving a channel" may be rephrased as receiving data (or information, or signal) using a channel. Also, "dropping a channel" may be rephrased as "not transmitting data (or information, or signal) using a channel."

[0051] 8, the terminal 20 transmits capability information (UE capability) to the base station 10. The capability information transmitted in S101 is, for example, the capability information described in a first embodiment to be described later.

[0052] In S102, the base station 10 transmits setting information to the terminal 20. This setting information includes, for example, information indicating that "XDD is performed in the cell in which the terminal 20 is located" and information indicating UL and DL frequency resources.

[0053] The transmission of the above-mentioned setting information from the base station 10 to the terminal 20 may be expressed as "XDD being configured."

[0054] In S103, the terminal 20 performs an operation based on the setting information. In S103, for example, the operation described in the second and third embodiments described later is performed.

[0055] Furthermore, terminal 20 does not assume reception of CH / Sig in frequency resources outside the DL frequency resources set when XDD is configured, and does not assume transmission of CH / Sig in frequency resources outside the UL frequency resources set when XDD is configured.

[0056] However, the terminal 20 may also measure a reference signal, a synchronization signal, or the like in a frequency resource outside the set DL frequency resource. The terminal 20 reports the measurement result to the base station 10, and the base station 10 may set a DL frequency resource (referred to as a new DL frequency resource) different from the DL frequency resource already set for the terminal 20. After receiving this setting, the terminal 20 performs DL reception using the new DL frequency resource.

[0057] Hereinafter, a first embodiment, a second embodiment, and a third embodiment will be described as embodiments that address the above-mentioned problems (1), (2), and (3). The first embodiment, the second embodiment, and the third embodiment can be implemented in any combination.

[0058] (First embodiment) First, a first embodiment will be described. In the first embodiment, an example of UE capability transmitted from the terminal 20 to the base station 10 in S101 of Fig. 8 will be described. In the following description, reporting to the base station 10 may be rephrased as "reporting to the NW (network)."

[0059] <UE capability related to resources> For example, the terminal 20 reports to the base station 10 (e.g., S101 in FIG. 8) UE capability related to resources (e.g., S102 in FIG. 8) instructed by the base station 10 when XDD is configured in the terminal 20 from the base station 10. These resources are UL and DL frequency resources used by the terminal 20 in XDD. However, these resources may also include time resources (time domain information).

[0060] Below are examples (1) to (4) of information about resources included in the UE capability reported from the terminal 20 to the base station 10. Any combination of (1) to (4) may be used.

[0061] (1) Resource granularity (either frequency granularity or time granularity, or both) The frequency granularity of the resource is, for example, a resource block (RB), BWP, MHz, etc. The time granularity of the resource is, for example, a slot, a subframe, a frame, μ seconds, m (milliseconds), etc.

[0062] When terminal 20 notifies base station 10 of "RB" as the resource granularity, base station 10 designates RB #0 to #50 for DL ​​and RB #51 to #100 for UL to terminal 20, for example.

[0063] Furthermore, when terminal 20 notifies base station 10 of "RB" and "frame" as the resource granularity, base station 10 specifies to terminal 20, for example, "RB#0 to #50=DL, RB#51 to #100=UL for even-numbered frames," and "RB#0 to #50=UL, RB#51 to #100=DL for odd-numbered frames."

[0064] (2) Maximum number of DL-UL multiplexing The maximum DL-UL multiplexing number is, for example, the maximum DL-UL multiplexing number per CC (component carrier). For example, when terminal 20 notifies base station 10 of 4 as the maximum DL-UL multiplexing number per CC (assuming the bandwidth is 100 MHz, for example), base station 10 specifies to terminal 20, for example, "0 to 25 MHz = UL, 25 MHz to 50 MHz = DL, 50 to 75 MHz = UL, 25 MHz to 100 MHz = DL."

[0065] (3) Minimum number of PRBs The minimum number of PRBs may be common to both UL and DL, or the minimum number of PRBs may be reported separately for UL and DL. For example, if terminal 20 reports 20 as the minimum number of PRBs common to both UL and DL to base station 10, base station 10 may assign, for example, frequency resources of 20 RBs or more as UL frequency resources and frequency resources of 20 RBs or more as DL frequency resources to terminal 20.

[0066] (4) Comb type The base station 10 may configure UL and DL frequency resources for the terminal 20 in a form in which UL and DL are alternately multiplexed in a comb-like pattern. The type of form in which UL frequency resources and DL frequency resources are alternately multiplexed in a comb-like pattern is called a comb type. The terminal 20 reports to the base station 10 one or more comb types that it supports. The base station 10 configures the terminal 20 with, for example, one comb type from one or more comb types supported by the terminal 20.

[0067] The comb type may be defined in units of CC, or may be defined for each of FR1 / FR2-1 / FR2-2, or may be defined for each frequency width other than these.

[0068] Fig. 9 shows Types 1 to 4 as examples of comb types in units of CC. Note that Types 1 to 4 shown in Fig. 9 may also be defined in units other than CC. Types 1 to 4 shown in Fig. 9 are just examples. For example, four comb types may be defined in which UL and DL shown in Types 1 to 4 shown in Fig. 9 are reversed.

[0069] <dl rx-ul tx間の許容gap:第2実施形態と関連> The terminal 20 may report to the base station 10 as UE capability the time gap (gap) between the DL reception timing and the UL transmission timing, which is necessary for normal operation in the terminal 20. This gap is referred to as the "permissible gap between DL Rx and UL Tx". Details of this gap will be described in the second embodiment regarding the UL and DL collision avoidance operations in the terminal 20. This gap corresponds to INT_dl_ul_gap in the second embodiment.

[0070] Also, the terminal 20 may report to the base station 10 as UE capability the maximum value of the permissible gap (INT_dl_ul_gap_diffBeam in the second embodiment) assumed when the DL reception beam (DL Rx beam) and the UL transmission beam (UL Tx beam) are different, and the maximum value of the permissible gap (INT_dl_ul_gap_sameBeam in the second embodiment) assumed when the DL reception beam (DL Rx beam) and the UL transmission beam (UL Tx beam) are the same. At this time, the maximum value of the permissible gap (INT_dl_ul_gap_diffBeam in the second embodiment) and the maximum value of the permissible gap (INT_dl_ul_gap_sameBeam in the second embodiment) may be reported in the same information element of the capability or in separate information elements.

[0071] <Granularity of Drop: Related to the Third Embodiment> The terminal 20 may report to the base station 10 as UE capability information indicating the granularity when dropping CH / Sig with low priority. The granularity to be reported is, for example, in units of symbols, slots, sub-frames, etc. Details of dropping CH / Sig with low priority will be described in the third embodiment.

[0072] <Simultaneous Transmission and Reception> The terminal 20 may report, as UE capability, information indicating whether or not simultaneous DL reception and UL transmission are possible to the base station 10. When the terminal 20 reports to the base station 10 that simultaneous DL reception and UL transmission are possible, the operations of the second and third embodiments described below may not be performed.

[0073] Furthermore, the operations of the second and third embodiments described below may be performed only when the terminal 20 reports to the base station 10 that DL reception and UL transmission cannot be performed simultaneously.

[0074] In the second and third embodiments described later, the terminal 20 is not capable of performing DL reception and UL transmission simultaneously, regardless of whether the UE capability is reported or not. However, even if the terminal 20 has the capability of performing DL reception and UL transmission simultaneously, it may perform the operations of the second and third embodiments described later.

[0075] <Effects of the first embodiment> According to the first embodiment described above, the terminal 20 can perform XDD operations according to the terminal capabilities.

[0076] (Second embodiment) Next, a second embodiment will be described. As described above, terminal 20 of this embodiment cannot perform UL transmission and DL reception simultaneously, so it is necessary to avoid overlapping between resources for UL transmission and resources for DL ​​reception. In the second embodiment, collision between UL and DL is avoided by providing a gap between DL reception and UL transmission in terminal 20.

[0077] The minimum value of the gap may be referred to as the "allowable gap between DL Rx and UL Tx." The "allowable gap between DL Rx and UL Tx" is represented by, for example, INT_dl_ul_gap. The time unit of INT_dl_ul_gap may be symbols, μs, ns, or other units.

[0078] The "minimum gap value" is a value that prevents the terminal 20 from switching from UL to DL or from DL to UL normally if the gap is narrower than this minimum value.

[0079] In the second embodiment, for example, in S102 of Fig. 8, the base station 10 sets a value of "allowable gap between DL Rx and UL Tx" to the terminal 20, and the terminal 20 and the base station 10 operate in accordance with the set value. Alternatively, the value of "allowable gap between DL Rx and UL Tx" may be defined in specifications, and the terminal 20 and the base station 10 operate in accordance with the specifications. Note that, for convenience of description, "allowable gap between DL Rx and UL Tx" may be referred to as "allowable gap" below.

[0080] <Transmission and reception operation example 1> The terminal 20 performs a DL CH / Sig reception operation and a UL CH / Sig transmission operation with a gap equal to or greater than the allowable gap value.

[0081] An example of the operation of terminal 20 will be described with reference to Fig. 10. As shown in Fig. 10, DL resources 1 set in advance in terminal 20 include DL resources 3 for performing DL reception operations, and UL resources 2 set in advance in terminal 20 include UL resources 4 for performing UL transmission operations.

[0082] As shown in FIG. 10, terminal 20 transmits UL CH / Sig using UL resource 4, and then receives DL CH / Sig using DL resource 3 after INT_dl_ul that is larger than the allowable gap (INT_dl_ul_gap).

[0083] In the example of Fig. 10, DL reception is performed after UL transmission, but this is just an example. UL transmission may also be performed after DL reception.

[0084] 10 may be a resource that terminal 20 autonomously selects from among UL resources 2, may be a predefined resource for CH / Sig transmission, or may be a resource assigned by base station 10. Also, DL resource 3 shown in FIG. 10 may be a resource that terminal 20 autonomously selects from among DL resources 1, may be a predefined resource for CH / Sig reception, or may be a resource assigned by base station 10.

[0085] For example, when UL resource 4 and DL resource 3 are both resources allocated by base station 10, terminal 20 may assume that allocation will be performed so that the gap (INT_dl_ul) is larger than INT_dl_ul_gap.

[0086] Also, for example, if either or both of UL resource 4 and DL resource 3 are predetermined, periodically arriving resources, terminal 20 may select timing that results in a gap (INT_dl_ul) larger than INT_dl_ul_gap, and perform transmission and reception using UL resource 4 and DL resource 3.

[0087] 10 (as well as other figures), the gap (INT_dl_ul) between the DL CH / Sig reception timing and the UL CH / Sig transmission timing is the gap between the end of the UL CH / Sig transmission resource and the start of the DL CH / Sig reception resource, but this is just an example. For example, the gap (INT_dl_ul) between the DL CH / Sig reception timing and the UL CH / Sig transmission timing may be the gap between the center of the UL CH / Sig transmission resource and the center of the DL CH / Sig reception resource.

[0088] <Transmission and reception operation example 2> When the terminal 20 determines that the gap between the DL CH / Sig reception timing and the UL CH / Sig transmission timing is less than the allowable gap value (or equal to or less than the allowable gap value), it performs an operation that will be described in a third embodiment, which will be described later. Note that the gap between the DL CH / Sig reception timing and the UL CH / Sig transmission timing being less than the allowable gap value (or equal to or less than the allowable gap value) may also be expressed as the occurrence of a collision between DL and UL (UL-DL collision).

[0089] The case where the gap between the DL CH / Sig reception timing and the UL CH / Sig transmission timing is less than the value of the allowable gap (or equal to or less than the value of the allowable gap) includes the case where there is no gap. In other words, the case where the gap between the DL CH / Sig reception timing and the UL CH / Sig transmission timing is less than the value of the allowable gap (or equal to or less than the value of the allowable gap) includes the case where there is an overlap in the time direction between the DL resource for DL ​​CH / Sig reception and the UL resource for UL CH / Sig transmission.

[0090] An example of the operation of terminal 20 will be described with reference to Fig. 11. As shown in Fig. 11, DL resources 1 set in advance in terminal 20 include DL resources 3 for performing DL reception operations, and UL resources 2 set in advance in terminal 20 include UL resources 4 for performing UL transmission operations.

[0091] 11, the gap (INT_dl_ul) between the UL resource 4 and the DL resource 3 is smaller than the allowable gap (INT_dl_ul_gap). When the terminal 20 determines that the gap (INT_dl_ul) is smaller than the allowable gap (INT_dl_ul_gap), it performs the operation of the third embodiment.

[0092] 11 may be a resource that terminal 20 autonomously selects from UL resource 2, may be a predefined resource for CH / Sig transmission, or may be a resource assigned by base station 10. Also, DL resource 3 shown in FIG. 11 may be a resource that terminal 20 autonomously selects from DL resource 1, may be a predefined resource for CH / Sig reception, or may be a resource assigned by base station 10.

[0093] For example, if UL resource 4 and DL resource 3 are both resources allocated by base station 10 using configuration information or control information, terminal 20 can determine from the configuration information or control information whether gap (INT_dl_ul) is smaller than the allowable gap (INT_dl_ul_gap).

[0094] Furthermore, for example, if either or both of the UL resource 4 and the DL resource 3 are predetermined, periodically arriving resources, the terminal 20 determines that the gap (INT_dl_ul) becomes smaller than the allowable gap (INT_dl_ul_gap) at the timing when the gap (INT_dl_ul) becomes smaller than the allowable gap (INT_dl_ul_gap), and performs the operation of the third embodiment.

[0095] <Transmission and reception operation example 3> If the DL reception beam (DL Rx beam) and the UL transmission beam (UL Tx beam) in the terminal 20 are the same (e.g., if "beam correspondence" in NR is established), the terminal 20 may assume that INT_dl_ul_gap is 0. In this case, the terminal 20 can perform DL reception immediately after performing UL transmission. Also, the terminal 20 can perform UL transmission immediately after performing DL reception.

[0096] Furthermore, the terminal 20 may assume that two or more gaps are set or instructed by the base station 10. Here, the setting may be performed by RRC, and the instruction may be performed by DCI or MAC CE.

[0097] For example, if the DL receiving beam (DL Rx beam) and the UL transmitting beam (UL Tx beam) in the terminal 20 are the same, the base station 10 sets / instructs the terminal 20 to INT_dl_ul_gap_sameBeam. Also, if the DL receiving beam (DL Rx beam) and the UL transmitting beam (UL Tx beam) in the terminal 20 are different, the base station 10 sets / instructs the terminal 20 to INT_dl_ul_gap_diffBeam.

[0098] Here, INT_dl_ul_gap_sameBeam may be 0. Also, INT_dl_ul_gap_diffBeam is greater than INT_dl_ul_gap_sameBeam. However, INT_dl_ul_gap_diffBeam is not limited to being greater than INT_dl_ul_gap_sameBeam.

[0099] For example, if the DL receiving beam (DL Rx beam) and the UL transmitting beam (UL Tx beam) in terminal 20 are the same, terminal 20 can switch between DL and UL without switching the beam direction, so INT_dl_ul_gap_sameBeam can be made smaller than INT_dl_ul_gap_diffBeam.

[0100] In the third example of transmission and reception operation, the terminal 20 autonomously determines the DL reception beam and the UL transmission beam based on, for example, the measurement results of the DL signal, and notifies the base station 10 of information on the determined DL reception beam and UL transmission beam. This allows the base station 10 to set / instruct the terminal 20 to use INT_dl_ul_gap_diffBea, INT_dl_ul_gap_sameBeam, etc.

[0101] In addition, the base station 10 may determine the DL receiving beam and the UL transmitting beam at the terminal 20 based on the UL signal received from the terminal 20, and notify the terminal 20 of information on the determined DL receiving beam and the UL transmitting beam.

[0102] Furthermore, the terminal 20 may autonomously determine the UL transmission beam based on the measurement results of the DL signal, etc., and notify the base station 10 of information about the determined UL transmission beam. Furthermore, the base station 10 may determine the DL reception beam for the terminal 20 based on the UL signal, etc., received from the terminal 20, and notify the terminal 20 of information about the determined DL reception beam.

[0103] In addition, the information on the DL receiving beam and the information on the UL transmitting beam notified from the base station 10 to the terminal 20 (or notified from the terminal 20 to the base station 10) may each be an index of a signal (e.g., SSB, CSI-RS, SRS) transmitted by the beam.

[0104] <Effects of the second embodiment> According to the second embodiment, the terminal 20 can appropriately avoid DL-UL collision.

[0105] (Third embodiment) Next, a third embodiment will be described. As explained in the second example of transmission and reception operation of the second embodiment, the terminal 20 performs the operation of the third embodiment when it determines that the gap between the DL CH / Sig reception timing and the UL CH / Sig transmission timing is less than the value of the allowable gap (or equal to or less than the value of the allowable gap). In other words, the third embodiment is an embodiment related to the operation when DL-UL collision occurs.

[0106] Basically, the terminal 20 drops the CH / Sig with the lower priority between the DL CH / Sig and the UL CH / Sig for which it determines that a collision has occurred, according to the priority of the CH / Sig between DL and UL. A more detailed operation will be described below.

[0107] <Example 1 of priority operation> In the third embodiment, the terminal 20 may assume that the priority of the CH / Sig between DL and UL is set by the base station 10. For example, in S102 of Fig. 8, the terminal 20 receives the priority of the CH / Sig between DL and UL from the base station 10 as setting information by RRC. Furthermore, the priority of the CH / Sig between DL and UL may be indicated from the base station 10 to the terminal 20 by MAC-CE or DCI.

[0108] In any case of RRC / MAC-CE / DCI, the priority of CH / Sig between DL and UL may be indicated by a priority indicator.

[0109] Alternatively, the priority of the CH / Sig between DL and UL may be defined by a specification, and the terminal 20 and the base station 10 may each operate in accordance with the specification.

[0110] The priority of CH / Sig between DL and UL may be set / instructed / specified for each CH / Sig, or a certain rule may be set / instructed / specified, and terminal 20 (and base station 10) may determine the priority of CH / Sig between DL and UL in accordance with that rule.

[0111] When the above rule is used, for example, the terminal 20 always gives priority to the CH / Sig that is scheduled (or specified, or set) earlier (or later) in time between the DL CH / Sig and the UL CH / Sig where a collision has occurred.

[0112] In addition, a CH / Sig that is always prioritized between a DL CH / Sig and an UL CH / Sig where a collision occurs may be set / indicated / defined. For example, a DL PDCCH may always be prioritized over an UL CH / Sig. Also, for example, an SSB may always be prioritized over an UL CH / Sig.

[0113] Also, regardless of the type of CH / Sig, it may be set / instructed / stipulated that UL is prioritized over DL (or DL is prioritized over UL).

[0114] Also, dynamic PDSCH / PUSCH (PDSCH / PUSCH scheduled by PDCCH) may each always be prioritized over semi-static PUSCH / PDSCH (CG PUSCH / SPS).

[0115] <Example of operation regarding priority 2> The terminal 20 may determine the priority of CH / Sig between DL and UL based on the value of the parameter of the resource set or scheduled by the base station 10. Hereinafter, (1) to (3) will be described as examples.

[0116] (1) Example based on setting For the operation of XDD, among the UL resource and DL resource set by the base station 10 for the terminal 20, the terminal 20 prioritizes the CH / Sig transmitted / received in the resource with the larger (or smaller) frequency bandwidth.

[0117] An example will be described with reference to FIG. 12. As shown in FIG. 12, a DL resource 1 with a frequency bandwidth of F_dl and a UL resource 2 with a frequency bandwidth of F_ul are set for the terminal 20.

[0118] Here, it is assumed that the CH / Sig transmitted / received in the resource with the larger frequency bandwidth is prioritized. In this case, if the terminal 20 determines that F_dl > F_ul, the terminal 20 prioritizes the CH / Sig received in the DL resource 1 over the CH / Sig transmitted in the UL resource 2. Also, if the terminal 20 determines that F_dl < F_ul, the terminal 20 prioritizes the CH / Sig transmitted in the UL resource 2 over the CH / Sig received in the DL resource 1.

[0119] (2) Example 1 based on scheduling Here, it is assumed that both the DL CH / Sig and the UL CH / Sig are received / transmitted using the resources scheduled from the base station 10.

[0120] Among the DL CH / Sig and the UL CH / Sig where a collision has occurred, the terminal 20 gives priority to the CH / Sig with the larger (or smaller) number of PRBs of the resources scheduled from the base station 10.

[0121] An example will be described with reference to FIG. 12. As shown in FIG. 12, for the DL CH / Sig, a DL resource 3 with a frequency bandwidth (number of PRBs) of F_s_dl is scheduled, and for the UL CH / Sig, a UL resource 4 with a frequency bandwidth (number of PRBs) of F_s_ul is scheduled.

[0122] Here, it is assumed that the CH / Sig with the larger number of PRBs is given priority. In this case, if the terminal 20 determines that F_s_dl > F_s_ul, the terminal 20 gives priority to the CH / Sig received in the DL resource 3 over the CH / Sig transmitted in the UL resource 4. Also, if the terminal 20 determines that F_s_dl < F_s_ul, the terminal 20 gives priority to the CH / Sig transmitted in the UL resource 4 over the CH / Sig received in the DL resource 3.

[0123] (3) Example 2 Based on Scheduling Here too, it is assumed that both the DL CH / Sig and the UL CH / Sig are received / transmitted using the resources scheduled from the base station 10.

[0124] Among the DL CH / Sig and the UL CH / Sig where a collision has occurred, the terminal 20 gives priority to the CH / Sig with the longer (or shorter) time duration of the resources scheduled from the base station 10.

[0125] An example will be described with reference to FIG. 12. As shown in FIG. 12, for DL CH / Sig, a DL resource 3 with a time length of T_s_dl is scheduled, and for UL CH / Sig, a UL resource 4 with a time length of T_s_ul is scheduled.

[0126] Here, the CH / Sig with the longer time length will be prioritized. In this case, if the terminal 20 determines that T_s_dl > T_s_ul, the CH / Sig received in the DL resource 3 will be prioritized over the CH / Sig transmitted in the UL resource 4. Also, if the terminal 20 determines that T_s_dl < T_s_ul, the CH / Sig transmitted in the UL resource 4 will be prioritized over the CH / Sig received in the DL resource 3.

[0127] <Operation example regarding drop> When a UL-DL collision occurs, if the terminal 20 drops the CH / Sig with a lower priority, it may perform any one of the following Opt.1 to Opt.4. Any one of the options of Opt.1 to Opt.4 may be set from the base station 10 to the terminal 20. Also, different options may be set from the base station 10 to the terminal 20 for each CH / Sig.

[0128] The overlapping resource described below is, for example, the overlapping part between the DL CH / Sig resource and the UL CH / Sig resource. Also, the overlapping resource may be a resource in the time region obtained by subtracting the actual gap (INT_dl_ul) from the allowable gap (INT_dl_ul_gap) as shown in A of FIG. 11.

[0129] [Opt.1] The terminal 20 drops only the symbols of the overlapping resource between DL and DL in the CH / Sig with a lower priority.

[0130] For example, if DL CH / Sig resources (symbols #0 to #10) have a lower priority than UL CH / Sig resources (symbols #0 to #3), terminal 20 drops symbols #0 to #3 from the DL CH / Sig resources. In other words, DL CH / Sig is not received in symbols #0 to #3.

[0131] [Option 2] The terminal 20 drops slots in which overlapping resources exist between DLs in a CH / Sig with low priority.

[0132] For example, if DL CH / Sig resources (symbols #0 in slot 1 to #10 in slot 2) have a lower priority than UL CH / Sig resources (symbols #0 to #3 in slot 1), terminal 20 drops slot 1 of the DL CH / Sig resources. In other words, DL CH / Sig is not received in slot 1.

[0133] [Option 3] The terminal 20 drops subframes in which overlapping resources exist between DLs in a CH / Sig with low priority.

[0134] For example, if DL has a lower priority than UL CH / Sig resources (slots 1 and 2 of subframe 1) and UL CH / Sig resources (slot 1 of subframe 1), terminal 20 drops subframe 1 of the DL CH / Sig resources. In other words, DL CH / Sig is not received in subframe 1.

[0135] [Opt.4] The terminal 20 drops resources in which there is an overlapping resource between DLs in a CH / Sig with a low priority.

[0136] For example, if DL CH / Sig resources (symbols #0 to #10) have a lower priority than UL CH / Sig resources (symbols #0 to #3), terminal 20 drops symbols #0 to #10, which are DL CH / Sig resources. In other words, DL CH / Sig is not received in symbols #0 to #10.

[0137] <Example of retransmission behavior in case of drop> If the dropped CH / Sig is a DL CH / Sig, the terminal 20 may request the base station 10 to retransmit the CH / Sig.

[0138] The terminal 20 may assume the resources for retransmitting CH / Sig depending on the dropped unit (Opt. above). For example, if Opt. 1 above is set, the terminal 20 may assume that only the dropped symbols will be retransmitted from the base station 10.

[0139] Specifically, for example, when terminal 20 drops symbols #0 to #3 of the DL CH / Sig resource and requests retransmission from base station 10, base station 10 retransmits the information of the part of CH / Sig symbols #0 to #3.

[0140] <Effects of the third embodiment> According to the third embodiment, when DL-UL collision occurs, the terminal 20 can appropriately determine the CH / Sig to be prioritized.

[0141] (Other examples) Next, an example common to all the embodiments will be described.

[0142] "CC (Component Carrier)" may be replaced with "PFL (Positioning Frequency Layer)" or "Positioning component carrier", etc. Also, "XDD (Cross division duplex)" may be replaced with "HD (Half duplex)", etc.

[0143] Furthermore, "configured by RRC" may be replaced with "updated (activated / deactivated) by MAC-CE" or "indicated (triggered) by DCI", etc. Furthermore, "drop" may be replaced with "puncture", etc.

[0144] Furthermore, "UE (User Equipment)" may be replaced with "UT (User Terminal)", "Node", "User node", etc. Furthermore, "NW" may be replaced with "gNB", "LMF (Location Manager Function)", etc. Furthermore, "slot" may be replaced with "subslot", etc.

[0145] (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.

[0146] <Base station 10> Fig. 13 is a diagram showing an example of the functional configuration of the base station 10. As shown in Fig. 12, 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. 13 is merely an example. The names of the functional divisions and functional units may be any as long as they can perform the operations related 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] <Terminal 20> Fig. 14 is a diagram showing an example of the functional configuration of the terminal 20. As shown in Fig. 14, 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. 14 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.

[0151] 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.

[0152] 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.

[0153] 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.

[0154] <Additional Notes> This embodiment provides at least the terminal, communication system, and communication method shown in the following items 1 to 6. (Section 1) A communication unit that communicates with a base station that can transmit and receive using the same time-frequency resource based on the configuration of uplink and downlink resources; a control unit that controls an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource; A terminal comprising: (Section 2) The communication unit, based on the control of the control unit, performing the uplink transmission and the downlink reception when the gap is greater than a set or defined allowable gap; If the gap is smaller than the allowable gap, then either the uplink transmission or the downlink reception is not performed. 1. The terminal described in paragraph 1. (Section 3) When the gap is smaller than the allowable gap, the communication unit does not perform the uplink transmission or the downlink reception, whichever has a lower priority. 2. The terminal described in paragraph 2. (Section 4) The communication unit reports capability information regarding the configuration of the uplink resource and the downlink resource or capability information regarding the gap to the base station. 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 time-frequency resource based on the configuration of uplink and downlink resources; a control unit that controls an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource; a terminal comprising: the base station including a transmitter that transmits configuration information of the uplink resource and the downlink resource to the terminal; A communication system comprising: (Section 6) communicating with a base station that can transmit and receive using the same time-frequency resource based on the configuration of uplink and downlink resources; controlling communication operations based on a gap between timing of uplink transmissions performed on the uplink resources and timing of downlink receptions performed on the downlink resources; A communication method executed by a terminal, comprising:

[0155] Any of the above items 1 to 6 provides a technique that enables a terminal to operate appropriately in a communication method in which the terminal performs only one-way communication at the same time using configured UL resources or DL ​​resources. In particular, the above item 2 enables the terminal to appropriately avoid DL-UL collision. The above item 3 enables the terminal to appropriately determine the CH / Sig to be prioritized when DL-UL collision occurs.

[0156] (Hardware configuration) The block diagrams (FIGS. 13 and 14) 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 connected directly or indirectly (for example, by wire, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining the single device or the multiple devices with software.

[0157] 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.

[0158] 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. 15 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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. 13 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. 14 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.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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).

[0167] 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.

[0168] 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.

[0169] Furthermore, the terminal 20 or the base station 10 may be provided in the vehicle 2001. FIG. 16 shows an example of the configuration of the vehicle 2001. As shown in FIG. 16, 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.

[0170] 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.

[0171] 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).

[0172] 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.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] (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.

[0180] 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.

[0181] 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.

[0182] 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.

[0183] 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).

[0184] The information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0185] 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.

[0186] 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).

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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.

[0203] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0204] 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."

[0205] 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.

[0206] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] 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.

[0215] 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.

[0216] 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.

[0217] A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0218] 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.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] 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.

[0223] 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.

[0224] 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.

[0225] 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."

[0226] 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.

[0227] 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.

[0228] 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."

[0229] 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).

[0230] 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]

[0231] 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 time / frequency resources based on the settings of uplink resources and downlink resources; a control unit that controls an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource, The communication unit If the gap is larger than a set or specified allowable gap, the uplink transmission and the downlink reception are performed. Terminal.

2. a communication unit that communicates with a base station that can transmit and receive using the same time / frequency resources based on the settings of uplink resources and downlink resources; a control unit that controls an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource, The communication unit reports information regarding the configuration of the uplink resource and the downlink resource to the base station. Terminal.

3. a communication unit that communicates with a base station that can transmit and receive using the same time / frequency resources based on the settings of uplink resources and downlink resources; a control unit that controls an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource; a terminal comprising: a base station including a transmitter that transmits configuration information of the uplink resource and the downlink resource to the terminal, The communication unit If the gap is larger than a set or specified allowable gap, the uplink transmission and the downlink reception are performed. Communication system.

4. a communication unit that communicates with a base station that can transmit and receive using the same time / frequency resources based on the settings of uplink resources and downlink resources; a control unit that controls an operation of the communication unit based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource; a terminal comprising: a base station including a transmitter that transmits configuration information of the uplink resource and the downlink resource to the terminal, The communication unit reports information regarding the configuration of the uplink resource and the downlink resource to the base station. Communication system.

5. a communication step of communicating with a base station that can transmit and receive using the same time / frequency resources based on the configuration of uplink resources and downlink resources; controlling a communication operation based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource, In the communication step, the terminal If the gap is larger than a set or specified allowable gap, the uplink transmission and the downlink reception are performed. Communication method.

6. a communication step of communicating with a base station that can transmit and receive using the same time / frequency resources based on the configuration of uplink resources and downlink resources; controlling a communication operation based on a gap between a timing of uplink transmission performed in the uplink resource and a timing of downlink reception performed in the downlink resource, In the communication step, the terminal reports information regarding the configuration of the uplink resource and the downlink resource to the base station. Communication method.

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