Terminal and communication method

Abstract

To allow a terminal with reduced functions and a normal terminal to coexist efficiently in a wireless communication system.SOLUTION: A terminal includes a receiving unit that receives using a first channel that can be used by any terminal and a second channel that can be used by a specific terminal, and a transmitting unit that transmits using the first channel and the second channel. The transmitting unit transmits a data channel on each of the first channel and the second channel and includes a control unit that calculates a TBS (Transport Block Size) based on resources of the second channel.SELECTED DRAWING: Figure 6

Description

[Technical Field]

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

[0002] The 3GPP (3rd Generation Partnership Project) is currently studying a wireless communication system called 5G or NR (New Radio) (hereinafter, this wireless communication system will be referred to as "NR") in order to achieve a larger system capacity, a higher data transmission speed, and a lower latency in wireless sections. In 5G, various wireless technologies and network architectures are being studied to meet the requirements of achieving a throughput of 10 Gbps or more while keeping the latency in wireless sections to 1 ms or less (for example, Non-Patent Document 1).

[0003] Furthermore, studies have begun on future systems beyond 5G, or 6G, which are expected to further improve communication performance and diversify use cases. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] 3GPP TS 38.300 V16.6.0 (2021-06) Summary of the Invention [Problem to be solved by the invention]

[0005] LTE and NR define UE categories or capabilities for the Internet of Things (IoT) that reduce functionality from the mandatory functions supported by normal terminals, such as transmission / reception bandwidth and number of antennas. For example, LTE defines enhanced Machine Type Communication (eMTC) and Narrow Band IoT (NB-IoT), while NR defines Reduced Capability (RedCap). IoT devices require additional functionality to compensate for performance degradation due to reduced functionality. Future networks are expected to require a wide variety of use cases and additional functionality for each terminal, making efficient coexistence with existing UE systems difficult.

[0006] The present invention has been made in view of the above points, and has as its object to allow terminals with reduced functionality and normal terminals to coexist efficiently in a wireless communication system. [Means for solving the problem]

[0007] According to the disclosed technology, there is provided a terminal having a receiving unit that receives using a first channel that can be used by any terminal and a second channel that can be used by a specific terminal, and a transmitting unit that transmits using the first channel and the second channel, wherein the transmitting unit transmits a data channel on each of the first channel and the second channel, and a control unit that calculates a TBS (Transport Block Size) based on resources of the second channel. [Effects of the Invention]

[0008] According to the disclosed technology, it is possible to allow terminals with reduced functionality and normal terminals to coexist efficiently in a wireless communication system. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. [Figure 2] FIG. 10 is a diagram illustrating an example of resource allocation. [Figure 3] FIG. 1 is a diagram illustrating an example of resource allocation according to an embodiment of the present invention. [Figure 4] FIG. 1 is a diagram showing an example (1) of scheduling in an embodiment of the present invention. [Figure 5] FIG. 10 is a diagram showing an example (2) of scheduling in the embodiment of the present invention. [Figure 6] FIG. 10 is a diagram showing an example (3) of scheduling in the embodiment of the present invention. [Figure 7] FIG. 10 is a diagram showing an example (4) of scheduling in the embodiment of the present invention. [Figure 8] FIG. 10 is a diagram showing an example (5) of scheduling in an embodiment of the present invention. [Figure 9] FIG. 10 is a diagram showing an example (6) of scheduling in an embodiment of the present invention. [Figure 10] FIG. 10 is a diagram showing an example (7) of scheduling according to an embodiment of the present invention. [Figure 11] FIG. 10 is a diagram showing an example (8) of scheduling according to an embodiment of the present invention. [Figure 12] FIG. 9 is a diagram showing an example (9) of scheduling according to an embodiment of the present invention. [Figure 13] FIG. 10 is a diagram showing an example of scheduling according to an embodiment of the present invention. [Figure 14] FIG. 11 is a diagram showing an example of scheduling according to an embodiment of the present invention. [Figure 15] 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 16] 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 17] 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 18] FIG. 2 is a diagram showing an example of the configuration of a vehicle 2001 according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] 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.

[0011] In the operation of the wireless communication system according to the embodiment of the present invention, existing technologies are used as appropriate. However, the existing technologies are, for example, but not limited to, the existing LTE. Furthermore, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and systems subsequent to LTE-Advanced (e.g., NR) unless otherwise specified.

[0012] Furthermore, in the embodiments of the present invention described below, terms used in existing LTE, such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel), are used. This is for convenience of description, and similar signals, functions, etc. may be referred to by other names. Furthermore, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even signals used in NR are not necessarily designated as "NR-".

[0013] Furthermore, in the embodiments of the present invention, the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or other methods (for example, Flexible Duplex, etc.).

[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] 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.

[0016] 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, and the time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. Furthermore, a TTI (Transmission Time Interval) in the time domain may be a slot or a subslot, or a TTI may be a subframe.

[0017] Base station 10 is capable of performing carrier aggregation, which aggregates multiple cells (multiple CCs (component carriers)) to communicate with terminal 20. In carrier aggregation, one primary cell (PCell) and one or more secondary cells (SCells) are used.

[0018] The base station 10 transmits a synchronization signal, system information, and the like to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, on the NR-PBCH or PDSCH, and is also called broadcast information. As shown in FIG. 1 , the base station 10 transmits control signals or data to the terminal 20 on the DL (Downlink) and receives control signals or data from the terminal 20 on the UL (Uplink). Note that, here, what is transmitted on a control channel such as the PUCCH or PDCCH is called a control signal, and what is transmitted on a shared channel such as the PUSCH or PDSCH is called data, but these names are merely examples.

[0019] 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, or an M2M (Machine-to-Machine) communication module. As shown in Fig. 1, the terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 may be referred to as a UE, and the base station 10 may be referred to as a gNB.

[0020] Terminal 20 can perform carrier aggregation, which aggregates multiple cells (multiple CCs) to communicate with base station 10. In carrier aggregation, one primary cell and one or more secondary cells are used. Also, a PUCCH-SCell having a PUCCH may be used.

[0021] Here, LTE and NR define UE categories or capabilities for IoT (Internet of Things) that reduce the functionality of functions that are mandatory for normal terminals, such as transmission / reception bandwidth and number of antennas. For example, LTE defines eMTC (enhanced Machine Type Communication) and NB-IoT (Narrow Band IoT), and NR defines RedCap (Reduced Capability). Such IoT devices require additional functionality to compensate for performance degradation due to reduced functionality. Future networks are expected to have a wide variety of use cases and additional functionality for each terminal, making efficient coexistence with existing UE systems difficult.

[0022] Fig. 2 is a diagram showing an example of resource allocation. As shown in Fig. 2, the frequency and time domain resources used by legacy UEs, sensing UEs, and IoT-UEs overlap, making it difficult for them to coexist in the system.

[0023] Therefore, a baseline channel that can be received by any UE and an additional channel optimized for a specific UE or service may be defined. While maintaining a connection using the baseline channel, the additional channel may be used as an additional resource.

[0024] Fig. 3 is a diagram showing an example of resource allocation in an embodiment of the present invention. As shown in Fig. 3, SSB, RACH, Msg2, Msg3, Msg4, PDCCH, and PUSCH / PDSCH may be transmitted and received in the baseline channel. Also, as shown in Fig. 4, SSB, RACH, PDCCH, and PUSCH / PDSCH may be transmitted and received in the baseline channel.

[0025] For example, the terminal 20 may perform transmission or reception on the baseline channel unless specifically configured or notified by the network. A terminal 20 of any category or having any capability may perform transmission or reception on the baseline channel. The any category or any capability may be, for example, eMBB, URLLC, IoT, eMTC, NB-IoT, RedCapUE, etc.

[0026] For example, the terminal 20 may perform transmission or reception on one or more additional channels if there is a specific setting or notification from the network. The terminal 20 may perform transmission and reception on the baseline channel and the additional channel if there is a specific setting or notification from the network. The terminal 20 may receive a specific setting or notification on the baseline channel. A terminal 20 of a specific category or a terminal 20 with a specific capability may perform transmission and reception on one or more additional channels. The specific category or specific capability may be, for example, eMBB, URLLC, etc.

[0027] For example, the terminal 20 may use at least one of the baseline channel and the additional channel to perform at least one of signal detection, time synchronization / frequency synchronization, demodulation, measurement, channel estimation, position estimation, receiving a DL signal / DL channel, transmitting a UL signal / UL channel, and transmitting a reference signal.

[0028] For example, a particular UL signal / UL channel may be located across both the baseline channel and the additional channel, and a particular DL signal / DL channel may be located across both the baseline channel and the additional channel.

[0029] For example, any terminal 20 may be capable of transmitting and receiving in the baseline channel, and a specific terminal 20 may be capable of transmitting and receiving in the additional channel. The additional channel may be optimized for a specific terminal 20 or a specific service. A terminal 20 may maintain a connection using the baseline channel and utilize additional resources in the additional channel.

[0030] The terminal 20 may be capable of transmitting and receiving data channels using the baseline channel and the additional channel. For example, the terminal 20 may be capable of the following operations 1) to 3).

[0031] 1) When resources are allocated to the baseline channel

[0032] When the DL and / or UL data channel is set to the baseline channel by PDCCH (DCI) or RRC signaling, etc., the terminal 20 may perform transmission and reception using only the baseline channel, or may perform transmission and reception using the baseline channel and additional channels.

[0033] 1-1) When using only the baseline channel

[0034] Fig. 4 is a diagram showing an example (1) of scheduling in an embodiment of the present invention. As shown in Fig. 4, when a data channel is repeatedly transmitted and received, the repetition may be performed only on the baseline channel. In Fig. 4, SCH is a DL or UL data channel, and Rep. is a repeated data channel. Furthermore, even when frequency hopping (inter-slot frequency hopping, intra-slot frequency hopping, etc.) is applied, the data channel may be arranged within the baseline channel.

[0035] The frequency resources or frequency and time resources of the UL or DL ​​data channel to which the baseline channel is allocated may have restrictions on configurable resources. For example, the baseline channel may have such restrictions in applications that require a minimum data rate, such as VoIP. For example, the frequency resources (e.g., the number of PRBs) may be uniquely defined, or the number of PRBs that can be configured may be defined (e.g., the number of PRBs = 2, 4, 8, etc., or the number of PRBs is 8 or less). This definition may reduce the number of bits required to configure FDRA (frequency domain resource allocation), which indicates the frequency resources, or FDRA may be omitted.

[0036] 1-2) When using the baseline channel and additional channels

[0037] 5 is a diagram showing a scheduling example (2) according to an embodiment of the present invention. As shown in FIG. 5, when repeatedly transmitting and receiving a data channel, the repetition may be performed alternately on the baseline channel and the additional channel. Furthermore, when frequency hopping (inter-slot frequency hopping, intra-slot frequency hopping, etc.) is applied, the data channel may be allocated to the baseline channel and the additional channel. The frequency resource for repetition may be notified by DCI and / or RRC signaling. In addition to whether or not frequency hopping is applied and the type of frequency hopping, the DCI and / or RRC signaling may also notify whether or not frequency hopping is to be performed on the baseline channel without using the additional channel. The frequency hopping offset in the additional channel may be set separately from the frequency hopping offset in the baseline channel.

[0038] If the subcarrier spacing of the baseline channel and the additional channel is different, the position of the resource in the time direction may be explicitly set, or the time resource may be extended. For example, if the SCS of the baseline channel is 15 kHz and the SCS of the additional channel is 30 kHz, the time resource of the additional channel may be doubled. The transport block size (TBS) may be calculated based on the time and frequency resources of the additional channel. If the baseline channel and the additional channel are aligned in the time direction at the slot level, the transmission timing may be specified. For example, the transmission timing of the first symbol may be aligned between the baseline channel and the additional channel.

[0039] Fig. 6 is a diagram showing a scheduling example (3) according to an embodiment of the present invention. As shown in Fig. 6, when a PUCCH resource and a PUSCH resource collide in the baseline channel, the following operations a) to c) may be performed.

[0040] a) A channel with a low priority may be transmitted as an additional channel based on the priority order ((1) in FIG. 6). The frequency resource for this transmission may be preset by RRC signaling or the like, or may be frequency resource set by frequency hopping. b) A channel with a low priority may not be transmitted based on the priority ((2) in FIG. 6). c) If a PUCCH resource conflicts with a PUSCH resource, the two channels may be multiplexed. For example, UCI may be transmitted on the PUSCH.

[0041] Furthermore, when resources do not collide but simultaneous transmission of the baseline channel and the additional channel is not possible, for example, when two channels are set in the same or partially identical time resource, the operation of b) or c) above may be performed. For example, when performing c), it may be specified or configured whether to multiplex the baseline channel or the additional channel, or whether to multiplex the PUSCH or PUCCH resource.

[0042] 2) When resources are allocated to an additional channel

[0043] When the DL and / or UL data channels are set as additional channels by PDCCH (DCI) or RRC signaling, etc., the terminal 20 may perform transmission and reception using only the additional channels, or may perform transmission and reception using the baseline channel and the additional channels.

[0044] 2-1) When using only additional channels

[0045] Fig. 7 is a diagram showing an example (4) of scheduling in an embodiment of the present invention. As shown in Fig. 7, when only additional channels are used, the same operations and mechanisms as when there is no baseline channel or when no baseline channel is set may be applied.

[0046] 2-2) When using additional channels and baseline channels

[0047] FIG. 8 is a diagram showing a scheduling example (5) according to an embodiment of the present invention. As shown in FIG. 8, when repeatedly transmitting and receiving a data channel, the repetition may be performed on the additional channel and the baseline channel. Furthermore, when frequency hopping (inter-slot frequency hopping, intra-slot frequency hopping, etc.) is applied, the data channel may be allocated to the baseline channel and the additional channel. The frequency resources for repetition may be notified by DCI and / or RRC signaling. In addition to whether or not and the type of frequency hopping are applicable, the DCI and / or RRC signaling may also notify whether or not the baseline channel is used and whether frequency hopping is performed on the additional channel. The frequency hopping offset for the additional channel may be set separately from the frequency hopping offset for the baseline channel. Since the bandwidth of the baseline channel is expected to be narrower than the bandwidth of the additional channel, the frequency hopping bandwidth that can be set on the additional channel may be specified or notified.

[0048] If the subcarrier spacing of the baseline channel and the additional channel is different, the position of the resource in the time direction may be explicitly set, or the time resource may be extended. For example, if the SCS of the baseline channel is 15 kHz and the SCS of the additional channel is 30 kHz, the time resource of the additional channel may be doubled. The TBS may be derived according to the time and frequency resources of the additional channel. If the baseline channel and the additional channel are aligned in the time direction at the slot level, the transmission timing may be specified. For example, the transmission timing of the first symbol may be aligned between the baseline channel and the additional channel.

[0049] 9 is a diagram showing a scheduling example (6) according to an embodiment of the present invention. As shown in FIG. 9, when a PUCCH resource and a PUSCH resource collide in an additional channel, the following operations a) to c) may be performed.

[0050] a) A channel with a low priority may be transmitted on the baseline channel based on the priority order ((1) in FIG. 9). The frequency resource for this transmission may be preset by RRC signaling or the like, or may be frequency resource set by frequency hopping. b) A channel with a low priority may not be transmitted based on the priority order ((2) in FIG. 9). c) If a PUCCH resource conflicts with a PUSCH resource, the two channels may be multiplexed. For example, UCI may be transmitted on the PUSCH.

[0051] Furthermore, when resources do not collide but simultaneous transmission of the baseline channel and the additional channel is not possible, for example, when two channels are set in the same or partially identical time resource, the operation of b) or c) above may be performed. For example, when performing c), it may be specified or configured whether to multiplex the baseline channel or the additional channel, or whether to multiplex the PUSCH or PUCCH resource.

[0052] 3) When the baseline channel and additional channel are assigned

[0053] When the DL and / or UL data channel is configured as both the baseline channel and the additional channel by PDCCH (DCI) or RRC signaling, etc., different TBs may be assigned to the baseline channel and the additional channel, the same TB may be assigned to the baseline channel and the additional channel, or one TB may be assigned to the baseline channel and the additional channel.

[0054] 3-1) When different TBs are assigned to the baseline channel and additional channel

[0055] Fig. 10 is a diagram showing a scheduling example (7) according to an embodiment of the present invention. As shown in Fig. 10, the TBs of the baseline channel and the additional channel are independent, and the TBSs may be calculated independently based on the respective resources and settings. Settings such as the number of repetitions may be common to the baseline channel and the additional channel, or may be independent. In the case of resource conflict, the operation as when there is no baseline channel may be performed, or 1-2) or 2-2) above may be performed.

[0056] 3-2) When the same TB is assigned to the baseline channel and additional channel

[0057] The TBS may be calculated based on resources and / or subcarrier spacing of either the baseline channel or the additional channel.

[0058] Fig. 11 is a diagram showing an example (8) of scheduling in an embodiment of the present invention. As shown in Fig. 11, terminal 20 may assume that time-frequency resources are configured such that the TBSs of the baseline channel and the additional channel are close to each other.

[0059] Fig. 12 is a diagram showing an example (9) of scheduling according to an embodiment of the present invention. As shown in Fig. 12, different numbers of repetitions may be set, so that the time-frequency resources may differ between the baseline channel and the additional channel.

[0060] Fig. 13 is a diagram showing an example (10) of scheduling in an embodiment of the present invention. As shown in Fig. 13, different subcarrier spacings may be set, so that the time-frequency resources may differ between the baseline channel and the additional channel.

[0061] As a method for determining whether repetition is possible or the resources for actually performing repetition, it may be determined that repetition is possible only when transmission and reception are possible on both the baseline channel and the additional channel, or it may be determined that repetition is possible when transmission and reception are possible on either the baseline channel or the additional channel.

[0062] In the event of a resource conflict, the following actions a)-d) may be taken:

[0063] a) Processing may be performed on a baseline channel or an additional channel with overlapping resources. For example, priority may be specified, and a channel with a low priority may not be transmitted. For example, two channels may be multiplexed so that UCI is transmitted on a PUSCH.

[0064] b) Priorities may be set for the baseline channel and the additional channel, and processing may be performed on the channel with the lower priority. For example, even if resource overlap occurs on the baseline channel, if the additional channel has a lower priority, processing such as multiplexing may be performed on the additional channel.

[0065] c) The same processing may be performed on the baseline channel and the additional channel. For example, if resource overlap occurs on the baseline channel, multiplexing or other processing may be performed on both the baseline channel and the additional channel.

[0066] d) A vacant time resource due to a difference in numerology may be used. For example, as shown in Figure 13, if the subcarrier spacing of the additional channel is greater than that of the baseline channel, the overlapping channel in the additional channel may be moved to the vacant time resource immediately after the overlap with the repeated time resource of the baseline channel, thereby resolving the collision.

[0067] 3-3) When one TB is assigned to the baseline channel and the additional channel

[0068] Fig. 14 is a diagram showing an example (11) of scheduling in an embodiment of the present invention. As shown in Fig. 14, when one TB is allocated to the baseline channel and the additional channel, the TBS may be calculated based on the resources and / or subcarrier spacing of either the baseline channel or the additional channel.

[0069] As a method for determining whether repetition is possible or the resources for actually performing repetition, it may be determined that repetition is possible only when transmission and reception are possible on both the baseline channel and the additional channel, or it may be determined that repetition is possible when transmission and reception are possible on either the baseline channel or the additional channel.

[0070] In the event of a resource conflict, the following actions a)-c) may be taken:

[0071] a) Processing may be performed on a baseline channel or an additional channel with overlapping resources. For example, priority may be specified, and a channel with a low priority may not be transmitted. For example, two channels may be multiplexed so that UCI is transmitted on a PUSCH.

[0072] b) Priorities may be set for the baseline channel and the additional channel, and processing may be performed on the channel with the lower priority. For example, even if resource overlap occurs on the baseline channel, if the additional channel has a lower priority, processing such as multiplexing may be performed on the additional channel.

[0073] c) The same processing may be performed on the baseline channel and the additional channel. For example, priority may be defined for each channel, and a channel with a low priority may not transmit on either the baseline channel or the additional channel. For example, if resource overlap occurs on the baseline channel, multiplexing or other processing may be performed on both the baseline channel and the additional channel.

[0074] The terminal 20 may report to the network UE capabilities related to the operation of each data channel when using the baseline channel. For example, the UE capabilities may be UE capabilities indicating whether or not the UE supports setting a data channel to the baseline channel and the additional channel individually or simultaneously. For example, the UE capabilities may be UE capabilities indicating whether or not the UE supports setting frequency hopping between the baseline channel and the additional channel. For example, the UE capabilities may be UE capabilities indicating whether or not the UE supports processing when resources conflict. For example, the UE capabilities may be UE capabilities indicating whether or not the UE supports a TBS calculation method and a resource setting method when the baseline channel and the additional channel are used simultaneously. For example, the UE capabilities may be UE capabilities indicating whether or not the UE supports setting when the numerology is different.

[0075] The terminal 20 may report to the network information indicating whether or not the UE capabilities related to each operation of the data channel when the above-mentioned baseline channel is used are supported collectively for all frequencies. Also, the terminal 20 may report to the network information indicating whether or not the UE capabilities related to each operation of the data channel when the above-mentioned baseline channel is used are supported as a mobile station. Also, the terminal 20 may report to the network whether or not the UE capabilities related to each operation of the data channel when the above-mentioned baseline channel is used are supported for each frequency. Also, the terminal 20 may report to the network information indicating whether or not the UE capabilities related to each operation of the data channel when the above-mentioned baseline channel is supported for each FR such as FR1 and FR2.

[0076] The terminal 20 may report to the network information indicating whether the UE capability related to each operation of the data channel when the baseline channel is used is supported as a mobile station. The terminal 20 may also report to the network the UE capability related to each operation of the data channel when the baseline channel is used for each duplexing method (e.g., TDD, FDD, etc.).

[0077] According to the above-described embodiment, the terminal 20 can repeatedly transmit data using the baseline channel and / or the additional channel in a system in which the baseline channel and the additional channel are set.

[0078] That is, in a wireless communication system, terminals with reduced functionality and normal terminals can coexist efficiently.

[0079] (Device configuration) Next, a description will be given of an example of the functional configuration of the base station 10 and the terminal 20 that execute the processes and operations described above. The base station 10 and the terminal 20 include functions for executing the above-described embodiments. However, the base station 10 and the terminal 20 may each include only one of the functions of the embodiments.

[0080] <Base station 10> Fig. 15 is a diagram showing an example of the functional configuration of the base station 10. As shown in Fig. 15, 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. 15 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. The transmitting unit 110 and the receiving unit 120 may be called a communication unit.

[0081] 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 signal. The transmitter 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, DL data, etc. to the terminal 20. The transmitter 110 also transmits the setting information, etc., described in the embodiments.

[0082] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device, and reads out the information from the storage device as needed. The control unit 140 performs, for example, resource allocation and overall control of the base station 10. Note that the functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120. Furthermore, the transmitting unit 110 and the receiving unit 120 may be called a transmitter and a receiver, respectively.

[0083] <Terminal 20> Fig. 16 is a diagram showing an example of the functional configuration of the terminal 20. As shown in Fig. 16, 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. 16 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 called a communication unit.

[0084] The transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiver 220 receives various signals wirelessly and acquires higher layer signals from the received physical layer signals. The transmitter 210 also transmits HARQ-ACK, and the receiver 220 receives the setting information and the like described in the embodiments.

[0085] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220 in a storage device, and reads it out from the storage device as needed. The setting unit 230 also stores setting information that is set in advance. The control unit 240 performs overall control of the terminal 20. Note that the functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220. Note that the transmitting unit 210 and the receiving unit 220 may be called a transmitter and a receiver, respectively.

[0086] (Hardware configuration) The block diagrams (FIGS. 15 and 16) 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.

[0087] 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.

[0088] 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. 17 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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. 15 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. 16 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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).

[0097] 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.

[0098] 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.

[0099] Fig. 18 shows an example configuration of a vehicle 2001. As shown in Fig. 18, 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.

[0100] 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.

[0101] 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).

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] (Summary of the embodiment) As described above, according to an embodiment of the present invention, there is provided a terminal having a receiving unit that receives using a first channel that can be used by any terminal and a second channel that can be used by a specific terminal, and a transmitting unit that transmits using the first channel and the second channel, wherein the transmitting unit repeatedly transmits a data channel on each of the first channel and the second channel.

[0110] With the above configuration, in a system in which a baseline channel and an additional channel are set, terminal 20 can repeatedly transmit data using the baseline channel and / or the additional channel. That is, terminals with reduced functionality and normal terminals can efficiently coexist in a wireless communication system.

[0111] The transmitter may alternately and repeatedly transmit the data channel on the first channel and the second channel. With this configuration, the terminal 20 can repeatedly transmit data using the baseline channel and / or the additional channel in a system in which a baseline channel and an additional channel are set.

[0112] When the data channel collides with another channel in the first channel, the transmitter may transmit the channel with a lower priority out of the data channel and the other channel in the second channel. With this configuration, the terminal 20 can repeatedly transmit data using the baseline channel and / or the additional channel in a system in which a baseline channel and an additional channel are set.

[0113] The transmitting unit may allocate the data channel to different time resources in the first channel from time resources in the second channel. With this configuration, the terminal 20 can repeatedly transmit data using the baseline channel and / or the additional channel in a system in which a baseline channel and an additional channel are set.

[0114] When the subcarrier spacing applied to the second channel is larger than the subcarrier spacing of the first channel and when the data channel collides with another channel in the second channel, the transmitter may move the other channel to a time resource of the second channel that overlaps with a time resource in which the data channel is allocated in the first channel, thereby resolving the collision. With this configuration, terminal 20 can repeatedly transmit data using a baseline channel and / or an additional channel in a system in which a baseline channel and an additional channel are set.

[0115] Furthermore, according to an embodiment of the present invention, a communication method is provided in which a terminal executes a receiving procedure in which it receives using a first channel that can be used by any terminal and a second channel that can be used by a specific terminal, a transmitting procedure in which it transmits using the first channel and the second channel, and a procedure in which it repeatedly transmits a data channel on each of the first channel and the second channel.

[0116] With the above configuration, in a system in which a baseline channel and an additional channel are set, terminal 20 can repeatedly transmit data using the baseline channel and / or the additional channel. That is, terminals with reduced functionality and normal terminals can efficiently coexist in a wireless communication system.

[0117] (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.

[0118] 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.

[0119] Each aspect / embodiment described in the present disclosure may be any of the following: LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or decimal number)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), or other appropriate systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0120] 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.

[0121] 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 another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). 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 (such as an MME and an S-GW).

[0122] The information or signals described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0123] 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.

[0124] 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).

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0135] 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.

[0136] 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.

[0137] Furthermore, a base station in the present disclosure may be read as a user 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 user 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 terminal-to-terminal communication (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0138] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station may be configured to have the functions of the user terminal described above.

[0139] 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.

[0140] 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.

[0141] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0142] 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."

[0143] 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.

[0144] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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, etc. instead of a subframe.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be set for the terminal 20 within one carrier.

[0163] At least one of the configured BWPs may be active, and the terminal 20 may not expect to transmit or receive a predetermined signal / channel outside the active BWP. Note that the terms "cell," "carrier," and the like in this disclosure may be read as "BWP."

[0164] 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.

[0165] 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.

[0166] 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."

[0167] 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).

[0168] In the present disclosure, the baseline channel is an example of a first channel, and the additional channel is an example of a second channel.

[0169] 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.

[0170] <Additional Notes> The above-described embodiment can be further described as follows.

[0171] (Appendix 1) a receiving unit that receives using a first channel that can be used by any terminal and a second channel that can be used by a specific terminal; a transmitting unit that performs transmission using the first channel and the second channel, The transmitting unit is a terminal that repeatedly transmits a data channel on each of the first channel and the second channel.

[0172] (Appendix 2) 2. The terminal according to claim 1, wherein the transmitting unit repeatedly transmits the data channel alternately over the first channel and the second channel.

[0173] (Appendix 3) 2. The terminal according to claim 1, wherein, when the data channel collides with another channel on the first channel, the transmitting unit transmits the channel having a lower priority between the data channel and the other channel on the second channel.

[0174] (Appendix 4) 2. The terminal according to claim 1, wherein the transmitting unit differentiates time resources in the first channel in which the data channel is allocated from time resources in the second channel in which the data channel is allocated.

[0175] (Appendix 5) 2. The terminal according to claim 1, wherein, when a subcarrier spacing applied to the second channel is larger than a subcarrier spacing of the first channel and when the data channel collides with another channel in the second channel, the transmitting unit moves the other channel to a time resource of the second channel that overlaps with a time resource in which the data channel is allocated in the first channel, thereby resolving the collision.

[0176] (Appendix 6) a receiving procedure for receiving using a first channel that can be used by any terminal and a second channel that can be used by a specific terminal; a transmission step of transmitting using the first channel and the second channel; a procedure of repeatedly transmitting a data channel on each of the first channel and the second channel, [Explanation of symbols]

[0177] 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 receiving unit that receives signals using a first channel that can be used by any terminal and a second channel that can be used by a specific terminal; a transmitter that performs transmission using the first channel and the second channel; the transmitter transmits a data channel on each of the first channel and the second channel; A terminal having a control unit that calculates a TBS (Transport Block Size) based on the resources of the second channel.

2. The terminal according to claim 1 , wherein the control unit adjusts resources of the second channel when a subcarrier spacing of the first channel differs from a subcarrier spacing of the second channel.

3. The terminal according to claim 1, wherein the transmitting unit matches the transmission timing of the first symbol between the first channel and the second channel when the first channel and the second channel are aligned in the time direction at the slot level.

4. 2. The terminal according to claim 1, wherein the control unit calculates the TBS of the first channel and the TBS of the second channel independently.

5. The terminal according to claim 1 , wherein the control unit sets different numbers of repetitions for the first channel and the second channel.

6. a procedure for receiving using a first channel that can be used by any terminal and a second channel that can be used by a specific terminal; transmitting using the first channel and the second channel; transmitting a data channel on each of the first channel and the second channel; and a procedure of calculating a transport block size (TBS) based on the resource of the second channel, the procedure being executed by the terminal.

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