terminal

Abstract

This terminal comprises: a control unit that selects a plurality of bands from among a first band for a first uplink, a second band for a second uplink that supports the first uplink, a third band for a third uplink having a frequency band different from those of the first band and the second band, and a fourth band for a fourth uplink that supports the third uplink; and a transmission unit that performs uplink transmission using a set of component carriers allocated to the selected plurality of bands.

Description

[Technical Field]

[0001] The present disclosure relates to a terminal. [Background Art]

[0002] The 3rd Generation Partnership Project (3GPP, registered trademark) has standardized the 5th generation mobile communication system (also referred to as 5G, which is also called New Radio (NR) or Next Generation (NG)), and is also advancing the standardization of next-generation systems called Beyond 5G, 5G Evolution or 6G.

[0003] In 3GPP Release 16, switching between two component carriers included in an uplink band has been discussed in carrier aggregation that uses a plurality of bundled component carriers. In 3GPP Release 17, switching between two or three component carriers included in two uplink bands has been discussed in carrier aggregation.

[0004] In addition, in 3GPP Release 18, switching among three or four uplink bands is being discussed (for example, Non-Patent Document 1). By bundling component carriers allocated to a band selected from among three or four bands, throughput in the uplink can be improved compared to configurations up to Release 17. [Prior Art Documents] [Non-Patent Documents]

[0005] [Non-Patent Document 1] “draft_MeetingReport_RAN_96_220609_eom”, 3GPP TSG RAN #96, June 6, 2022 [Summary of the Invention]

[0006] However, conventional technology does not specify which of the three or four bands to select to improve uplink throughput. This presents a challenge, as it may result in the selection of only one uplink band that does not offer sufficient throughput.

[0007] Therefore, the following disclosure is made in light of these circumstances and aims to provide a terminal that can appropriately select multiple uplink bands.

[0008] One aspect of the present disclosure is a terminal comprising: a control unit that selects a plurality of bands from a first band for a first uplink, a second band for a second uplink that assists the first uplink, a third band for a third uplink having a frequency bandwidth different from the first and second bands, and a fourth band for a fourth uplink that assists the third uplink; and a transmitting unit that performs uplink transmission using a set of component carriers assigned to the plurality of selected bands.

[0009] One aspect of the present disclosure is a terminal comprising: a control unit that selects a plurality of bands from a first band for a first uplink, a second band for a second uplink that assists the first uplink, and a third band for a third uplink whose frequency bandwidth is different from that of the first and second bands; and a transmitting unit that performs uplink transmission using a set of component carriers included in the plurality of selected bands. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a schematic diagram of the overall configuration of the wireless communication system 10 according to this embodiment.

[0011] [Figure 2] Figure 2 is a functional block diagram of the UE200.

[0012] [Figure 3]Figure 3 is a functional block configuration diagram of gNB 100.

[0013] [Figure 4] Figure 4 is a diagram for explaining the band selection operation in Release 16.

[0014] [Figure 5] Figure 5 is a diagram for explaining the band selection operation in Release 17.

[0015] [Figure 6] Figure 6 is a diagram for explaining the band selection operation in Release 18.

[0016] [Figure 7] Figure 7 is a diagram for explaining the band selection operation in Release 16.

[0017] [Figure 8] Figure 8 is a diagram for explaining the band selection operation in Release 16.

[0018] [Figure 9] Figure 9 is a diagram for explaining Operation Example 2.

[0019] [Figure 10] Figure 10 is a diagram showing an example of the hardware configuration of gNB 100 and UE 200.

[0020] [Figure 11] Figure 11 is a diagram showing a configuration example of a vehicle 2001. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments will be described with reference to the drawings. The same or similar reference numerals are given to the same functions and configurations, and the description thereof will be omitted as appropriate.

[0022] [Embodiment] (1) Overall schematic configuration of the wireless communication system 10 Figure 1 is a schematic diagram of the overall configuration of the wireless communication system 10 according to this embodiment. The wireless communication system 10 is a wireless communication system that conforms to 5G New Radio (NR) and includes a Next Generation-Radio Access Network 20 (hereinafter referred to as NG-RAN20) and a terminal 200 (hereinafter referred to as UE200, User Equipment, UE). The wireless communication system 10 may also be a wireless communication system that conforms to a method called Beyond 5G, 5G Evolution, or 6G. The wireless communication system 10 may include a gNB100, UE200, NG-RAN20, and a core network.

[0023] NG-RAN20 includes a wireless base station 100 (hereinafter referred to as gNB100). NG-RAN20 actually includes multiple NG-RAN Nodes, specifically gNBs (or ng-eNBs), and is connected to a 5G-compliant core network (e.g., 5GC). Note that NG-RAN20 and the core network may simply be referred to as the "network." The specific configuration of the wireless communication system 10, including gNB100 and UE200, is not limited to the example shown in Figure 1.

[0024] The gNB100 is a 5G-compliant radio base station that performs 5G-compliant wireless communication with the UE200. The gNB100 and UE200 can support Massive MIMO (Multiple-Input Multiple-Output), which generates a more directional beamband by controlling radio signals transmitted from multiple antenna elements; carrier aggregation (CA), which uses multiple component carriers (CCs) bundled together; and dual connectivity (DC), which enables simultaneous communication with two or more transport blocks between the UE and each of the two NG-RAN Nodes.

[0025] The core network includes network devices. These network devices may include LMF (Location Management Function), AMF (Access and Mobility Management Function), etc. The network devices may also be E-SMLC (Evolved Serving Mobile Location Centre). The gNB100 constitutes a wireless communication node.

[0026] (2) Functional block configuration of the wireless communication system 10 Next, the functional block configuration of the wireless communication system 10 will be described.

[0027] First, we will describe the functional block configuration of the UE200.

[0028] Figure 2 is a functional block diagram of the UE200. As shown in Figure 2, the UE200 comprises a wireless signal transmission / reception unit 210, an amplifier unit 220, a modulation / demodulation unit 230, a control signal / reference signal processing unit 240, an encoding / decoding unit 250, a data transmission / reception unit 260, and a control unit 270.

[0029] Note that Figure 2 only shows the main functional blocks relevant to the description of the embodiment, and the UE200 has other functional blocks (e.g., a power supply unit). Also, Figure 2 shows the functional block configuration of the UE200; please refer to Figure 10 for the hardware configuration.

[0030] The wireless signal transceiver 210 transmits and receives wireless signals in accordance with NR. By controlling the radio frequency (RF) signals transmitted from multiple antenna elements, the wireless signal transceiver 210 can support Massive MIMO, which generates a more directional beam; carrier aggregation (CA), which uses multiple component carriers (CCs) bundled together; and dual connectivity (DC), which enables simultaneous communication between the UE200 and each of the two NG-RAN Nodes.

[0031] In this embodiment, the wireless signal transmission / reception unit 210 may be configured as a transmission unit that performs uplink transmission using a set of component carriers (CCs) assigned to multiple bands selected by the control signal / reference signal processing unit 240 (control unit).

[0032] The amplifier section 220 consists of components such as a PA (Power Amplifier) ​​and an LNA (Low Noise Amplifier). The amplifier section 220 amplifies the signal output from the modulation / demodulation section 230 to a predetermined power level. The amplifier section 220 also amplifies the RF signal output from the wireless signal transmission / reception section 210.

[0033] The modulation / demodulation unit 230 performs data modulation / demodulation, transmit power setting, and resource block allocation for each predetermined communication destination (gNB100 or other gNB). The modulation / demodulation unit 230 may apply Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform - Spread (DFT-S-OFDM). Furthermore, DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).

[0034] The control signal / reference signal processing unit 240 performs processing related to various control signals transmitted and received by the UE200, and processing related to various reference signals transmitted and received by the UE200.

[0035] Specifically, the control signal / reference signal processing unit 240 receives various control signals transmitted from the gNB100 via a predetermined control channel, such as control signals for the radio resource control layer (RRC). The control signal / reference signal processing unit 240 also transmits various control signals to the gNB100 via a predetermined control channel.

[0036] The control signal / reference signal processing unit 240 performs processing using reference signals (RS) such as the Demodulation Reference Signal (DMRS) and the Phase Tracking Reference Signal (PTRS). The DMRS is a reference signal (pilot signal) known between each UE200 base station and the UE200 for estimating the fading channel used for data demodulation. The PTRS is a reference signal specific to each UE200, intended for estimating phase noise, which is a problem in the high-frequency band.

[0037] In addition to DMRS and PTRS, the reference signals may also include Channel State Information-Reference Signal (CSI-RS), Sounding Reference Signal (SRS), and Positioning Reference Signal (PRS) for location information.

[0038] Furthermore, channels include control channels and data channels. Control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel), Downlink Control Information (DCI) including Random Access Radio Network Temporary Identifier (RA-RNTI), and Physical Broadcast Channel (PBCH), among others.

[0039] Furthermore, data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel), among others. "Data" refers to data transmitted through a data channel. A data channel can also be interpreted as a shared channel.

[0040] The control signal / reference signal processing unit 240 may receive downlink control information (DCI). The DCI includes fields that store DCI Formats, Carrier indicator (CI), BWP indicator, FDRA (Frequency Domain Resource Assignment), TDRA (Time Domain Resource Assignment), MCS (Modulation and Coding Scheme), HPN (HARQ Process Number), NDI (New Data Indicator), RV (Redundancy Version), etc., as existing fields.

[0041] The value stored in the DCI Format field is an information element that specifies the DCI format. The value stored in the CI field is an information element that specifies the CC to which the DCI applies. The value stored in the BWP indicator field is an information element that specifies the BWP to which the DCI applies. The BWP that can be specified by the BWP indicator is set by an information element (BandwidthPart-Config) included in the RRC message. The value stored in the FDRA field is an information element that specifies the frequency domain resource to which the DCI applies. The frequency domain resource is identified by the value stored in the FDRA field and an information element (RA Type) included in the RRC message. The value stored in the TDRA field is an information element that specifies the time domain resource to which the DCI applies. The time domain resource is identified by the value stored in the TDRA field and an information element (pdsch-TimeDomainAllocationList, push-TimeDomainAllocationList) included in the RRC message. The time domain resource may also be identified by the value stored in the TDRA field and the default table. The value stored in the MCS field is an information element that specifies the MCS to which the DCI applies. The MCS is identified by the value stored in MCS and the MCS table. The MCS table may be specified by the RRC message or identified by RNTI scrambling. The value stored in the HPN field is an information element that specifies the HARQ Process to which DCI is applied. The value stored in NDI is an information element that determines whether the data to which DCI is applied is initial transmission data. The value stored in the RV field is an information element that specifies the redundancy of the data to which DCI is applied.

[0042] In this embodiment, the control signal / reference signal processing unit 240 may be configured as a control unit that selects multiple bands from among a first band for a first uplink, a second band for a second uplink that assists the first uplink, a third band for a third uplink whose frequency bandwidth is different from that of the first and second bands, and a fourth band for a fourth uplink that assists the third uplink. Details of the first uplink, second uplink, third uplink, and fourth uplink will be described later. Details of the first band, second band, third band, and fourth band will also be described later.

[0043] In this embodiment, the control signal / reference signal processing unit 240 may be configured as a control unit that selects a plurality of bands from among a first band for a first uplink, a second band for a second uplink that assists the first uplink, and a third band for a third uplink whose frequency bandwidth is different from that of the first and second bands.

[0044] In this embodiment, the control signal / reference signal processing unit 240 may constitute a control unit that selects the first band and the third band.

[0045] In this embodiment, the control signal / reference signal processing unit 240 may be configured as a control unit that deselects the second band and the fourth band. Deselecting the second band and the fourth band may be interpreted as not selecting the second band and the fourth band.

[0046] In this embodiment, the control signal / reference signal processing unit 240 may be configured as a control unit that deselects the second band and the third band. Deselecting the second band and the third band may be interpreted as not selecting the second band and the third band.

[0047] The encoding / decoding unit 250 performs data splitting / concatenation and channel coding / decoding for each predetermined communication destination (gNB100 or other gNB). Specifically, the encoding / decoding unit 250 splits the data output from the data transmission / reception unit 260 into predetermined sizes and performs channel coding on the split data. The encoding / decoding unit 250 also decodes the data output from the modulation / demodulation unit 230 and concatenates the decoded data.

[0048] The data transmission / reception unit 260 performs the transmission and reception of Protocol Data Units (PDUs) and Service Data Units (SDUs). Specifically, the data transmission / reception unit 260 performs assembly / decomposition of PDUs / SDUs at multiple layers (such as the Media Access Control Layer (MAC), Radio Link Control Layer (RLC), and Packet Data Convergence Protocol Layer (PDCP)). In addition, the data transmission / reception unit 260 performs error correction and retransmission control of data based on HARQ (Hybrid Automatic Repeat Request).

[0049] The control unit 270 controls each functional block that makes up the UE200.

[0050] In the wireless communication system 10, an SSB (SS / PBCH Block) consisting of a synchronization signal (SS) and a downlink physical broadcast channel (PBCH) may be used.

[0051] SSB is primarily transmitted periodically from the network by the UE200 at the start of communication to detect the cell ID and reception timing. In NR, SSB is also used to measure the reception quality of each cell. The transmission period (periodicity) of SSB may be specified as 5, 10, 20, 40, 80, or 160 milliseconds. Note that the UE200 during initial access may be assumed to have a transmission period of 20 milliseconds.

[0052] Secondly, the functional block configuration of the gNB100 will be described.

[0053] Figure 3 is a functional block diagram of the gNB100. As shown in Figure 3, the gNB100 has a receiving unit 110, a transmitting unit 120, and a control unit 130.

[0054] The receiver 110 receives various signals from the UE200. The receiver 110 may also receive the UL signal via PUCCH or PUSCH.

[0055] The transmitter 120 transmits various signals to the UE200. The transmitter 120 may also transmit DL signals via PDCCH or PDSCH.

[0056] The control unit 130 controls the gNB100.

[0057] (3) Operation of the wireless communication system 10 Next, the operation of the wireless communication system 10 will be described. Specifically, an example of the operation of the wireless communication system 10, including the gNB100 and UE200 which can appropriately control the retention or discarding of configuration information, will be described.

[0058] (3.1) Prerequisites and Issues Referring to Figure 4 and other figures, we will explain the challenges in appropriately selecting component carriers included in multiple bands.

[0059] (Band selection operation in Release 16) Figures 4, 7, and 8 illustrate the band selection operation in Release 16. Figure 4 shows the two transmitting antennas and multiple component carriers of the UE200.

[0060] The first transmitting antenna (TX#1) performs uplink transmission using a component carrier (carrier1) assigned to a specific band. The second transmitting antenna (TX#2) is configured to select either of two component carriers (carrier1 and carrier2) assigned to a specific band.

[0061] Carrier 1 may be interpreted as a component carrier assigned to the first band. Carrier 2 may be interpreted as a component carrier assigned to a second band, which is different from the first band. The first and second bands may be interpreted as bands for uplinks. The first band may be interpreted as a band for normal uplinks (NUL). The second band may be interpreted as a band for supplemental uplinks (SUL) that support the first band.

[0062] In case 1 of Figure 8, uplink transmission using carrier 2 is performed through port 1 of the first transmitting antenna, and uplink transmission using carrier 1 is performed through port 2 of the second transmitting antenna. In case 2 of Figure 8, uplink transmission using carrier 2 is performed through port 1 of the first transmitting antenna, and uplink transmission using carrier 2 is performed through port 2 of the second transmitting antenna.

[0063] In the table shown at the top of Figure 7, case 1 "1T+1T" indicates that when option 1 is set, uplink transmission using one carrier 1 and uplink transmission using carrier 2 are possible. Option 1 may be interpreted as a setting that does not allow uplink transmission with two bands or two component carriers selected simultaneously. Option 1 may be interpreted as a setting that disables uplink transmission with two bands or two component carriers selected simultaneously.

[0064] Case 1 "1P+0P" indicates that when option 1 is set, uplink transmission using one carrier is possible from only one antenna port. Case 2 "0T+2T" indicates that when option 1 is set, each of the two transmitting antennas is capable of uplink transmission using one carrier 2. Case 2 "0P+2P,0P+1P" indicates that when option 1 is set, uplink transmission using one carrier 2 is possible from each of the two antenna ports, or uplink transmission using one carrier 2 is possible from one of the two antenna ports.

[0065] In the table shown at the bottom of Figure 7, case 1 "1T+1T" indicates that when option 2 is set, uplink transmission using carrier 1 and uplink transmission using carrier 2 are possible. Option 2 can be interpreted as a setting that allows uplink transmission using two bands or two component carriers simultaneously. case 1 "1P+0P,1P+1P,0P+1P" indicates that when option 2 is set, uplink transmission using one carrier or two carriers is possible from one antenna port. case 2 "0T+2T" indicates that when option 2 is set, each of the two transmitting antennas is capable of uplink transmission using carrier 2. case 2 "0P+2P,0P+1P" indicates that when option 2 is set, uplink transmission using carrier 2 is possible from each of the two antenna ports, or uplink transmission using carrier 2 is possible from one of the two antenna ports.

[0066] When Option 2 is selected, the UE200 in Release 16 can perform carrier aggregation (CA) using two component carriers. This can potentially improve uplink throughput compared to using a single component carrier.

[0067] (Band selection operation in Release 17) Figure 5 is a diagram illustrating the band selection operation in Release 17. Figure 5 shows the two transmitting antennas ("TX#1" and "TX#2") of the UE200 and several bands. The first and second bands may be interpreted as uplink bands. The second band may be interpreted as a second band different from the first band. The first band may be interpreted as a normal uplink (NUL) band, and the second band may be interpreted as an uplink (SUL) band that supplements the first band.

[0068] The difference from Release 16 is that the UE200 in Release 17 allows you to select one or both of the two bands, and perform carrier aggregation (CA) using the 2CC or 3CC assigned to the selected band.

[0069] 2CC may be interpreted as multiple component carriers assigned to the same band, i.e., a specific single band. 3CC may be interpreted as the sum of one or more component carriers assigned to two or more bands.

[0070] The UE200 in Release 17 can, for example, select a first and second band and perform carrier aggregation (CA) using multiple component carriers assigned to each of these bands. This can potentially improve uplink throughput compared to the Release 16 configuration.

[0071] (Band selection operation in Release 18) Figure 6 is a diagram illustrating the band selection operation in Release 18. Figure 6 shows the two transmitting antennas and multiple bands provided by the UE200. As previously mentioned, "TX#1" in the figure is the first transmitting antenna, and "TX#2" is the second transmitting antenna. Bands 1 through 4 can each be interpreted as an uplink band.

[0072] The difference from Release 17 is that the UE200 in Release 18 allows each of its multiple antennas to select three or four bands, and can perform carrier aggregation (CA) using component carriers assigned to the selected bands.

[0073] However, conventional technology does not specify which of the three or four bands to select to improve uplink throughput. This presents a challenge, as it may result in only one uplink band being selected, one that is not expected to provide high throughput.

[0074] To address these challenges, several operational examples are possible, as shown below, that allow for the appropriate selection of multiple bands. These operational examples may be used individually or in combination of two or more.

[0075] (3.2) Example of operation The following describes an example of an operation that can solve the aforementioned problems.

[0076] (3.2.1) Example of operation 1 In this embodiment, the UE200, which is configured to allow selection of four bands, can be configured with the following options.

[0077] (Alt1) The UE200 may be configured with Option 1 as shown below. Option 1 can be interpreted as a setting that does not allow uplink transmission with two of the four bands selected simultaneously. Option 1 can also be interpreted as a setting that deselects two of the four bands.

[0078] A UE200 with Option 1 configured may deselect two of the four bands. Specifically, the UE200 may deselect the following set of bands: • First band (NUL band) and second band (SUL band) • Band 1 (NUL Band) and Band 3 (NUL Band) • Band 1 (NUL Band) and Band 4 (SUL Band) • Second band (SUL band) and third band (NUL band) • Band 2 (SUL Band) and Band 4 (SUL Band) • Third band (NUL band) and fourth band (SUL band)

[0079] A UE200 with Option 1 configured may select any one of the four bands.

[0080] The first band may be interpreted as the band for the first uplink. The second band may be interpreted as the band for the second uplink that assists the first uplink. The third band may be interpreted as the band for the third uplink, whose frequency bandwidth is different from that of the first and second bands. The fourth band may be interpreted as the band for the fourth uplink that assists the third uplink. The first and third uplinks may be interpreted as NUL (Non-Usable). The second and fourth uplinks may be interpreted as SUL (Surface-Usable). The first and third uplinks may be interpreted as SUL (Surface-Usable). The second and fourth uplinks may be interpreted as NUL (Non-Usable).

[0081] Each of the four bands may contain one or more component carriers.

[0082] (Alt2) The UE200 may be configured with Option 2 as shown below. Option 2 may be interpreted as a setting that allows uplink transmission with simultaneous selection of the first band (NUL band) and the third band (NUL band) out of the four bands. Option 2 may be interpreted as a setting that allows simultaneous selection of the first band (NUL band) and the third band (NUL band) out of the four bands. However, the UE200 is not intended to perform uplink transmission with simultaneous selection of two SUL bands, nor is it intended to perform uplink transmission with simultaneous selection of the SUL band and the NUL band. Specifically, if the existing Option 2 specified in Release 17, etc., is applied to Tx switching (band selection) in Release 18, a UE200 with Option 2 configured will not perform simultaneous selection of the SUL band and the NUL band when a BC (band combination) for Tx switching including the SUL band is configured in the UE200. This makes uplink transmission possible with simultaneous selection of the first band (NUL band) and the third band (NUL band).

[0083] According to Alt2, since the first band (NUL band) and the third band (NUL band) can be selected from among the four bands, it is possible to prevent the selection of only one uplink band. Therefore, uplink throughput may be improved compared to when only one uplink band is selected. In addition, since the first band (NUL band) and the third band (NUL band) can be selected from among the four uplink bands, it becomes possible to dynamically select the optimal band (with good bandwidth and propagation environment) compared to using component carriers assigned to two uplink bands as in Release 17.

[0084] (Alt3) In addition to options 1 and / or 2 above, the UE200 may also be configured with option 3, which enables uplink transmission with two NUL bands selected simultaneously. In other words, the UE200 may select only the first band (NUL band) and the third band (NUL band) out of the four bands. In this case, the UE200 may deselect two of the four bands. Specifically, the UE200 may deselect the following pairs of bands:

[0085] • First band (NUL band) and second band (SUL band) • Band 1 (NUL Band) and Band 4 (SUL Band) • Second band (SUL band) and third band (NUL band) • Band 2 (SUL Band) and Band 4 (SUL Band) • Third band (NUL band) and fourth band (SUL band)

[0086] According to Alt3, if the first band (NUL band) is a higher frequency band than the second band (SUL band), and the third band (NUL band) is a higher frequency band than the fourth band (SUL band), then selecting the first band (NUL band) and the third band (NUL band) can utilize a wider frequency bandwidth, potentially improving uplink transmission throughput.

[0087] The UE200 may also be configured with both Option 1 and Option 2 as described above. Furthermore, the UE200 may also be configured with both Option 1 and Option 3 as described above. If both Option 1 and Option 2 are configured, the UE200 may select either Option 1 or Option 2 and perform band selection corresponding to the selected option. If both Option 1 and Option 3 are configured, the UE200 may select either Option 1 or Option 3 and perform band selection corresponding to the selected option.

[0088] This configuration allows you to select a specific option from among several options, making it possible to prioritize uplink transmission throughput when operating the UE200, or to prioritize reducing power consumption during uplink transmission.

[0089] Furthermore, if Option 2 or Option 3 described above is set, the UE200 may select only the SUL band (or a set of SUL bands) when it receives a predetermined instruction transmitted from the network. This instruction may be interpreted as a transmission instruction to perform uplink transmission using a set of component carriers assigned to the SUL band and the NUL band.

[0090] This configuration allows for the selection of a set of SUL bands without having to select a specific band, thereby increasing uplink transmission throughput compared to when only one band is selected. Furthermore, even if the desired throughput cannot be achieved by selecting two bands, including a NUL band, high throughput can be achieved by selecting a set of SUL bands.

[0091] Furthermore, upon receiving the above instructions, the UE200 may select only the pre-defined or pre-specified SUL bands for uplink transmission.

[0092] (3.2.2) Example of operation 2 In this embodiment, the UE200, which is configured to allow selection of three bands, can be configured with the following options.

[0093] (Alt1) The UE200 may be configured with Option 1 as shown below. Option 1 may be interpreted as a setting that does not allow uplink transmission with two of the three bands selected simultaneously. Option 1 may be interpreted as a setting that deselects two of the three bands.

[0094] A UE200 with Option 1 configured may deselect two of the three bands. Specifically, the UE200 may deselect the following set of bands: • First band (NUL band) and second band (SUL band) • Band 1 (NUL Band) and Band 3 (NUL Band) • Band 1 (NUL Band) and Band 4 (SUL Band) • Second band (SUL band) and third band (NUL band) • Band 2 (SUL Band) and Band 4 (SUL Band) • Third band (NUL band) and fourth band (SUL band)

[0095] UE200 with Option 1 configured may select any one of the three bands.

[0096] The first band may be interpreted as the band for the first uplink. The second band may be interpreted as the band for the second uplink that assists the first uplink. The third band may be interpreted as the band for the third uplink whose frequency bandwidth is different from that of the first and second bands. The third band may be interpreted as one or more bands that do not correspond to the first and / or second bands. Multiple NUL bands that do not correspond to the first and / or second bands may be interpreted as including a specific first NUL band and a second NUL band whose frequency bandwidth is different from that first NUL band. The first and third uplinks may be interpreted as NUL. The second uplink may be interpreted as SUL. The first and third uplinks may be interpreted as SUL. The second uplink may be interpreted as NUL.

[0097] Each of the three bands may contain one or more component carriers.

[0098] (Alt2) The UE200 may be configured with Option 2 as shown below. Option 2 may be interpreted as a setting that allows uplink transmission with simultaneous selection of the first band (NUL band) and the third band (NUL band) out of the three bands. Option 2 may be interpreted as a setting that allows simultaneous selection of the first band (NUL band) and the third band (NUL band) out of the three bands. However, the UE200 is not intended to perform uplink transmission with simultaneous selection of the SUL band and the NUL band. Specifically, if the existing Option 2 specified in Release 17, etc., is applied to Tx switching (band selection) in Release 18, a UE200 with Option 2 configured will not perform simultaneous selection of the SUL band and the NUL band when a BC (band combination) for Tx switching including the SUL band is configured in the UE200. This makes uplink transmission with simultaneous selection of the first band (NUL band) and the third band (NUL band) possible.

[0099] According to Alt2, since the first band (NUL band) and the third band (NUL band) can be selected from the three bands, it is possible to prevent the selection of only one uplink band. Therefore, uplink throughput may be improved compared to when only one uplink band is selected. In addition, since the first band (NUL band) and the third band (NUL band) can be selected from the three uplink bands, it becomes possible to dynamically select the optimal band (with good bandwidth and propagation environment) compared to using component carriers assigned to two uplink bands as in Release 17.

[0100] (Alt3) In addition to options 1 and / or 2 above, the UE200 may also be configured with option 3, which enables uplink transmission with two NUL bands selected simultaneously. In other words, the UE200 may select only two pairs of NUL bands out of the three bands. That is, it may select either the pair of the first band (NUL band) and the third band (NUL band), or the pair of the third band (the first NUL band above) and a NUL band with a different frequency band than the third band (the second NUL band above). In this case, the UE200 may deselect the following pairs of bands.

[0101] • First band (NUL band) and second band (SUL band) • Second band (SUL band) and third band (NUL band)

[0102] According to Alt3, if the first band (NUL band) and the third band (NUL band) are higher frequency bands than the second band (SUL band), selecting the first band (NUL band) and the third band (NUL band) can utilize a wider frequency bandwidth, potentially improving uplink transmission throughput.

[0103] The UE200 may also be configured with both Option 1 and Option 2 as described above. Furthermore, the UE200 may also be configured with both Option 1 and Option 3 as described above. If both Option 1 and Option 2 are configured, the UE200 may select either Option 1 or Option 2 and perform band selection corresponding to the selected option. If both Option 1 and Option 3 are configured, the UE200 may select either Option 1 or Option 3 and perform band selection corresponding to the selected option.

[0104] This configuration allows you to select a specific option from among several options, making it possible to prioritize uplink transmission throughput when operating the UE200, or to prioritize reducing power consumption during uplink transmission.

[0105] Figure 9 is a diagram illustrating Operation Example 2. When UE200 receives a predetermined instruction transmitted from the network, if option 2 or option 3 described above is set, it may select only the second band (SUL band) shown in Figure 9. This instruction may be interpreted as a transmission instruction to perform uplink transmission using a pair of component carriers assigned to the SUL band and the NUL band. In this case, UE200 does not select the specified band, but selects the SUL band and performs uplink transmission using the component carriers assigned to the selected SUL band. In other words, UE200 ignores uplink transmission scheduling when a pair of the SUL band and a band other than the SUB band is selected.

[0106] According to Alt6, since only one SUL band is selected instead of a pair of two bands, priority can be given to reducing power consumption during UE200 uplink transmission.

[0107] (3.2.3) Example of operation 3 In this embodiment, the UE200, which is configured to allow selection of four or three bands, may notify the NW of information indicating each of the aforementioned band combinations 2 to 4 as UE Capability. Alternatively, it may notify the NW of information indicating whether these band combinations are applicable to any of the aforementioned Alts as UE Capability.

[0108] This embodiment is also applicable when more than four bands are set as selectable bands. Furthermore, Port #1 (or 2) shown in Figure 8, etc., may be interpreted as Tx chain #1 (or 2), or as Tx #1 (or 2). Specifically, when the number of CCs per band is 1 CC, the following cases may also be included in this embodiment. If one component carrier is assigned to each of the four bands, the total number of component carriers across the four bands is four. If each of the four bands is assigned two component carriers, the total number of component carriers across the four bands is eight. If one component carrier is assigned to one of the four bands and two component carriers are assigned to the remaining bands, the total number of component carriers across the four bands will be between 5 and 7.

[0109] <Note> The terminal or base station of this embodiment may be configured as one of the terminals or base stations described in the following sections. (Section 1) A control unit that selects multiple bands from among a first band for a first uplink, a second band for a second uplink that assists the first uplink, a third band for a third uplink whose frequency bandwidth is different from that of the first and second bands, and a fourth band for a fourth uplink that assists the third uplink. A transmitter unit that performs uplink transmission using a set of component carriers assigned to multiple selected bands, A terminal equipped with the following features. (Section 2) The terminal according to claim 1, wherein the control unit selects the first band and the third band. (Section 3) The terminal according to claim 1 or 2, wherein the control unit deselects the second band and the fourth band. (Section 4) A control unit that selects multiple bands from among a first band for a first uplink, a second band for a second uplink that assists the first uplink, and a third band for a third uplink whose frequency bandwidth is different from that of the first and second bands. A transmitter unit that performs uplink transmission using a set of component carriers included in multiple selected bands, A terminal equipped with the following features. (Section 5) The terminal according to claim 4, wherein the control unit selects the first band and the third band. (Section 6) The terminal according to claim 4 or 5, wherein the control unit deselects the second band and the third band.

[0110] (4) Effects According to the embodiments described above, the following effects and advantages can be obtained. Specifically, the terminal according to the embodiments of this disclosure includes a control unit that selects a plurality of bands from a first band for a first uplink, a second band for a second uplink that assists the first uplink, a third band for a third uplink whose frequency bandwidth is different from that of the first and second bands, and a fourth band for a fourth uplink that assists the third uplink, and a transmission unit that performs uplink transmission using a set of component carriers assigned to the plurality of selected bands. It may be provided.

[0111] This allows for the selection of two uplink bands within the four available bands, thus preventing the selection of only one uplink band. Consequently, uplink throughput may be improved compared to the case where only one uplink band is selected. Furthermore, because multiple uplink bands can be selected from the four available bands, uplink transmission using a wider frequency bandwidth becomes possible compared to using component carriers allocated to two uplink bands, as in Release 17.

[0112] In the embodiment of this disclosure, the terminal may select the first band and the third band. If the first band (NUL band) is a higher frequency band than the second band (SUL band) and the third band (NUL band) is a higher frequency band than the fourth band (SUL band), selecting the first band (NUL band) and the third band (NUL band) allows for the utilization of a wider frequency band, thereby potentially improving the uplink transmission throughput.

[0113] The control unit of the terminal according to the embodiment of this disclosure may deselect the second band and the fourth band. As a result, if the first band (NUL band) is a higher frequency band than the second band (SUL band) and the third band (NUL band) is a higher frequency band than the fourth band (SUL band), only the first band (NUL band) and the third band (NUL band) can be selected, and a wider frequency band can be utilized, which can improve the uplink transmission throughput.

[0114] A terminal according to the embodiment of this disclosure may include a control unit that selects a plurality of bands from a first band for a first uplink, a second band for a second uplink that assists the first uplink, and a third band for a third uplink whose frequency bandwidth is different from that of the first and second bands, and a transmitting unit that performs uplink transmission using a set of component carriers included in the plurality of selected bands.

[0115] This allows for the selection of two uplink bands within a single band, thus preventing the selection of only one uplink band. Consequently, uplink throughput may be improved compared to the case where only one uplink band is selected. Furthermore, because multiple uplink bands can be selected from three uplink bands, uplink transmission using a wider frequency bandwidth becomes possible compared to using component carriers allocated to two uplink bands, as in Release 17.

[0116] (5) Other embodiments Although embodiments have been described above, it will be obvious to those skilled in the art that the invention is not limited to those embodiments described and that various modifications and improvements are possible.

[0117] Furthermore, in the above description, configure, activate, update, indicate, enable, specify, and select may be interpreted interchangeably. Similarly, link, associate, correspond, and map may be interpreted interchangeably, as may allocate, assign, monitor, and map.

[0118] Furthermore, "specific," "dedicated," "UE specific," and "UE individual" may be interpreted interchangeably. Similarly, "common," "shared," "group-common," "UE common," and "UE shared" may be interpreted interchangeably.

[0119] In this disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "quasi-co-location (QCL)," "transmission configuration indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," and "panel" may be used interchangeably.

[0120] Furthermore, the block diagrams (Figures 2 and 3) used in the description of the embodiments above show functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Moreover, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may also be realized by combining the above one device or the above multiple devices with software.

[0121] Functions include, but are not limited to, judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. In any case, as mentioned above, the method of implementation is not particularly limited.

[0122] Furthermore, the gNB100 (the device), UE200 (the device), and AMF described above may function as computers that process the wireless communication method of this disclosure. Figure 10 shows an example of the hardware configuration of the gNB100 and UE200. As shown in Figure 10, the device may be configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, and bus 1007.

[0123] In the following explanation, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of the device may include one or more of the devices shown in the diagram, or it may be configured to omit some of the devices.

[0124] Each functional block of the device (see Figures 2 and 3) is implemented by any hardware element of the computer device, or a combination of such hardware elements.

[0125] Furthermore, each function in the device is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of data reading and writing in the memory 1002 and storage 1003.

[0126] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may consist of a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, and so on.

[0127] Furthermore, the processor 1001 reads programs (program code), software modules, data, etc., from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. Moreover, the above-mentioned various processes may be executed by one processor 1001, or by two or more processors 1001 simultaneously or sequentially. The processor 1001 may be implemented by one or more chips. The program may also be transmitted from a network via a telecommunications line.

[0128] Memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Random Access Memory (RAM), etc. Memory 1002 may also be called a register, cache, main memory, etc. Memory 1002 can store a program (program code), software modules, etc., that can execute a method according to one embodiment of this disclosure.

[0129] Storage 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disc, a digital multipurpose disc, a Blu-ray® disc), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy® disk, a magnetic strip, etc. Storage 1003 may also be called an auxiliary storage device. The recording medium described above may also be, for example, a database, server, or other suitable medium including at least one of memory 1002 and storage 1003.

[0130] The communication device 1004 is hardware (transceiver / receiver device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc.

[0131] The communication device 1004 may be configured to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD).

[0132] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0133] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0134] Furthermore, the device may include hardware such as a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), and a field-programmable gate array (FPGA), and some or all of the functional blocks may be implemented by such hardware. For example, processor 1001 may be implemented using at least one of these hardware components.

[0135] Furthermore, notification of information is not limited to the embodiments / models described herein and may be carried out by other means. For example, notification of information may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper layer signaling (e.g., RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB))), other signals, or combinations thereof. RRC signaling may also be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0136] Each aspect / embodiment described herein may be applied to at least one of the following: Long Term Evolution (LTE), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), Future Radio Access (FRA), New Radio (NR), W-CDMA®, GSM®, CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth®, and other appropriate systems, as well as next-generation systems extended based thereon. Furthermore, multiple systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A with 5G).

[0137] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0138] The specific operations described in this disclosure as being performed by the gNB100 may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having a gNB100, it is clear that various operations performed for communication with the UE200 can be performed by the gNB100 and at least one of the other network nodes (for example, an MME or S-GW, but not limited to these). Although the above example illustrates the case where there is one other network node besides the gNB100, it may also be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0139] Information and signals (such as data) can be output from a higher layer (or lower layer) to a lower layer (or higher layer). Input and output may occur via multiple network nodes.

[0140] The input and output information may be stored in a specific location (e.g., memory) or managed using a management table. The input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be transmitted to other devices.

[0141] The determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0142] Each aspect / embodiment described herein may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0143] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0144] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0145] The information, signals, etc. described in this disclosure may be represented using any of the various different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0146] In addition, terms used 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 the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0147] The terms “system” and “network” as used in this disclosure are interchangeable.

[0148] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or corresponding other information. For example, wireless resources may be indicated by an index.

[0149] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Since various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are not restrictive in any way.

[0150] In this disclosure, terms such as "Base Station (BS)", "wireless 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. The gNB100 may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0151] The gNB100 can accommodate one or more (e.g., three) cells (also called sectors). When the gNB100 accommodates multiple cells, the entire coverage area of ​​the gNB100 can be divided into multiple smaller areas, each of which can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head: RRH)).

[0152] The terms "cell" or "sector" refer to a portion or all of the coverage area of ​​at least one of the gNB100 and base station subsystems that provide communication services in this coverage.

[0153] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0154] 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 several other appropriate terms.

[0155] At least one of the gNB100 and the mobile station may be called a transmitter, receiver, communication device, etc. At least one of the gNB100 and the mobile station may be a device mounted on a mobile body, the mobile body itself, etc. 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 gNB100 and the mobile station may be a device that does not necessarily move during communication operation. For example, at least one of the gNB100 and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0156] Furthermore, gNB100 in this disclosure may be interpreted as a mobile station (user terminal, hereinafter the same). For example, each aspect / embodiment of this disclosure may be applied to a configuration in which communication between gNB100 and a mobile station is replaced with communication between multiple mobile stations (which may be called, for example, Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.). In this case, the mobile station may have the functions that gNB100 has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc. may be interpreted as side channel.

[0157] Similarly, the mobile station in this disclosure may be interpreted as gNB100. In this case, the functions of the mobile station may be configured to be possessed by gNB100. A radio frame may consist 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 consist of one or more slots in the time domain. A subframe may have a fixed time length that is independent of numerology (e.g., 1 ms).

[0158] Numerology may be communication parameters applied to at least one of the transmission and reception of a signal or channel. Numerology may include, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, and specific windowing processes performed by the transceiver in the time domain.

[0159] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols). A slot may also be a time unit based on neurology.

[0160] A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. Minislots may also be called subslots. Minislots 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.

[0161] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Different names may be used for each of these terms.

[0162] 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. In other words, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 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.

[0163] Here, TTI refers to, for example, the smallest unit of time for scheduling in wireless communication. For example, in an LTE system, the gNB100 schedules the allocation of wireless resources (such as the frequency bandwidth and transmission power available to each user terminal) in TTI units to each user terminal. Note that the definition of TTI is not limited to this.

[0164] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. Given a TTI, the actual time interval (e.g., number of symbols) to which the transport block, code block, code word, etc. are mapped may be shorter than the given TTI.

[0165] Furthermore, if one slot or one mini-slot is referred to as TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit of scheduling. In addition, the number of slots (number of mini-slots) that constitute the minimum time unit of scheduling may be controlled.

[0166] A TTI with a time length of 1ms may also be called a normal TTI, long TTI, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may also be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, mini slot, sub slot, slot, etc.

[0167] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0168] A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0169] Furthermore, the time domain of RB may contain one or more symbols and may be the length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc., may each consist of one or more resource blocks.

[0170] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0171] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0172] A Bandwidth Part (BWP), also known as a partial bandwidth, may represent a subset of consecutive common resource blocks (RBs) for a given neurology on a given carrier. Here, the common RBs may be identified by an index of the RBs relative to the carrier's common reference point. PRBs may be defined and numbered within a BWP.

[0173] A BWP may include an uplink BWP (UL BWP) and a downlink BWP (DL BWP). One or more BWPs may be configured within a single carrier for a UE.

[0174] At least one of the configured BWPs may be active, and the UE does not need to assume that it will send or receive a given signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0175] The structures described above, such as wireless frames, subframes, slots, minislots, and symbols, are merely illustrative. For example, the number of subframes included in a wireless frame, the number of slots per subframe or wireless frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, and the number of symbols, symbol length, and cyclic prefix (CP) length within a TTI can be varied in various ways.

[0176] The terms “connected,” “coupled,” or any variation thereof, mean 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” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be reinterpreted as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0177] The reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot depending on the applicable standard.

[0178] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0179] In the configuration of each of the above devices, "means" may be replaced with "part," "circuit," "device," etc.

[0180] Any reference to elements using designations such as “First,” “Second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to the First and Second elements do not imply that only two elements may be employed therein, or that the First element must precede the Second element in any way.

[0181] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0182] In this disclosure, if articles are added through translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0183] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (e.g., searching in a table, database, or other data structure), and ascertaining. “Determining” may also include, for example, receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0184] In this 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 "combine" may be interpreted similarly to "different."

[0185] Figure 11 shows an example of the configuration of vehicle 2001. As shown in Figure 11, vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, left and right front wheels 2007, left and right 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.

[0186] The drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.

[0187] 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 performed by the user.

[0188] The electronic control unit 2010 consists of a microprocessor 2031, memory (ROM, RAM) 2032, and communication ports (IO ports) 2033. Signals from various sensors 2021 to 2027 installed in the vehicle are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0189] Signals from various sensors 2021-2028 include current signals from the current sensor 2021 that senses motor current, front and rear wheel rotation speed signals obtained by the rotation speed sensor 2022, front and rear wheel air pressure signals obtained by the air pressure sensor 2023, vehicle speed signals obtained by the vehicle speed sensor 2024, acceleration signals obtained by the acceleration sensor 2025, accelerator pedal depression signals obtained by the accelerator pedal sensor 2029, brake pedal depression signals obtained by the brake pedal sensor 2026, shift lever operation signals obtained by the shift lever sensor 2027, and detection signals obtained by the object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0190] The Information Services Unit 2012 consists of various devices for providing various types of information, such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, television, and radio, and one or more ECUs that control these devices. The Information Services Unit 2012 uses information acquired from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of Vehicle 1.

[0191] The driver assistance system unit 2030 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System)), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 2030 also sends and receives various information via the communication module 2013 to realize driver assistance functions or autonomous driving functions.

[0192] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 1 via its communication port. For example, the communication module 2013 sends and receives data via its communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2028 provided in the vehicle 2001.

[0193] 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 external devices. For example, it can send and receive various types of information to and from external devices 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 gNB100 or a mobile station.

[0194] The communication module 2013 transmits current signals from current sensors input to the electronic control unit 2010 to an external device via wireless communication. The communication module 2013 also transmits, via wireless communication, other signals input to the electronic control unit 2010, including front and rear wheel rotation speed signals obtained by the rotation speed sensor 2022, front and rear wheel air pressure signals obtained by the air pressure sensor 2023, vehicle speed signals obtained by the vehicle speed sensor 2024, acceleration signals obtained by the acceleration sensor 2025, accelerator pedal depression signals obtained by the accelerator pedal sensor 2029, brake pedal depression signals obtained by the brake pedal sensor 2026, shift lever operation signals obtained by the shift lever sensor 2027, and detection signals obtained by the object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0195] The communication module 2013 receives various information (traffic information, signal information, distance information, etc.) transmitted from external devices and displays it on the information service unit 2012 installed in the vehicle. The communication module 2013 also stores the various information received from external devices in memory 2032, which is available to the microprocessor 2031. Based on the information stored in memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, left and right front wheels 2007, left and right rear wheels 2008, axles 2009, sensors 2021-2028, etc., installed in the vehicle 2001.

[0196] Although the present disclosure has been described in detail above, it will be 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 intent and scope of the present disclosure as defined by the claims. Therefore, the descriptions in the present disclosure are illustrative and not intended to be restrictive in any way. [Explanation of Symbols]

[0197] 10 Wireless communication systems 20 NG-RAN 100 gNB 110 Receiving unit 120 Transmitter 130 Control Unit 200 UE 210 Wireless signal transmission and reception unit 220 Amplifier section 230 Modulation / Demodulation Section 240 Control signal / reference signal processing unit 250 Encoding / Decoding Unit 260 Data transmission / reception unit 270 Control Unit 1001 Processor 1002 memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 Bus 2001 Vehicle 2002 Drive Unit 2003 Steering Department 2004 Accelerator pedal 2005 Brake pedal 2006 Shift Lever 2007 Left and right front wheels 2008 Left and right rear wheels 2009 Axle 2010 Electronic Control Unit 2012 Information Services Department 2013 Communication Module 2021 Current Sensor 2022 Rotation speed sensor 2023 Pneumatic Sensor 2024 Vehicle Speed ​​Sensor 2025 Accelerometer 2026 Brake Pedal Sensor 2027 Shift lever sensor 2028 Object Detection Sensor 2029 Accelerator pedal sensor 2030 Driver Support Systems Department 2031 Microprocessor 2032 memory (ROM, RAM) 2033 Communication Port

Claims

1. A transmitting unit that performs uplink transmission using a set of bands selected from three or more bands, A terminal having a control unit that enables simultaneous uplink transmission to be applied to a set of bands consisting of two non-SUL (Supplemental UpLink) bands, and controls that simultaneous uplink transmission cannot be applied to any set of bands that include at least one SUL band.

2. The terminal according to claim 1, wherein the control unit does not anticipate performing an uplink transmission with two SUL bands selected simultaneously, nor does it anticipate performing an uplink transmission with a SUL band and a non-SUL band selected simultaneously.

3. The three or more bands include a first non-SUL band, a first SUL band that assists the first non-SUL band, a second non-SUL band whose frequency bandwidth is different from that of the first non-SUL band and the first SUL band, and a second SUL band that assists the second non-SUL band. The terminal according to claim 1, wherein the control unit controls the simultaneous uplink transmission to be unavailable for all band combinations, including at least one of the first SUL band and the second SUL band.

4. The three or more bands include a first non-SUL band, a first SUL band that assists the first non-SUL band, and a second non-SUL band whose frequency bandwidth is different from that of the first non-SUL band and the first SUL band. The terminal according to claim 1, wherein the control unit controls the simultaneous uplink transmission to be unavailable for all band sets, including the first SUL band.

5. The terminal according to claim 1, wherein the control unit notifies the network of capability information indicating whether or not the simultaneous uplink transmission is applicable to each of the multiple band sets.

6. A step of performing an uplink transmission using a set of bands selected from three or more bands, A communication method in which a terminal performs the steps of: enabling simultaneous uplink transmission for a set of bands consisting of two non-SUL bands, and disabling simultaneous uplink transmission for all sets of bands that include at least one SUL band.

7. A receiving unit that receives an uplink transmission from a terminal using a set of bands selected from three or more bands, A base station having a control unit that enables simultaneous uplink transmission to be applied to a set of bands consisting of two non-SUL (Supplemental UpLink) bands, and prevents simultaneous uplink transmission from being applied to any set of bands that include at least one SUL band.

8. A communication system having a terminal and a base station, The aforementioned terminal is A transmitting unit that performs uplink transmission using a set of bands selected from three or more bands, The system includes a control unit that enables simultaneous uplink transmission to be applied to a set of bands consisting of two non-SUL (Supplemental UpLink) bands, and controls the system to prevent simultaneous uplink transmission from being applied to any set of bands that include at least one SUL band. The aforementioned base station is A receiving unit that receives the aforementioned uplink transmission from the terminal, A communication system comprising: a control unit that enables simultaneous uplink transmission to be applied to a set of bands consisting of the two non-SUL (Supplemental UpLink) bands, and controls that prevents simultaneous uplink transmission from being applied to all sets of bands including at least one SUL band.

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