Terminal, base station, and communication method

Abstract

A terminal is provided with: a reception unit that receives, from a base station, setting information including information indicating the switching time of each band pair for uplink transmission switching between the band pairs; and a control unit that, on the basis of the setting information, sets the switching time for each band pair for the terminal, the band pair being a pair of bands in a band combination set for the uplink transmission switching in the base station, and the set band combination being a band combination not supported by the terminal.

Description

Technical Field

[0001] This invention relates to terminals, base stations, and communication methods. Background Technology

[0002] In NR (New Radio) (also known as "5G"), which is the successor system to LTE (Long Term Evolution), technologies that meet requirements such as high-capacity systems, high-speed data transmission, low latency, simultaneous connection of multiple terminals, low cost, and power saving are being researched (e.g., non-patent literature 1).

[0003] In NR, enhanced uplink transmission in multi-carrier systems is being investigated. For example, the UL Tx switching (UL Txswitching) function, which allows up to two terminals simultaneously supporting dynamic switching of uplink transmission carriers (or, also known as bands), is being studied. Up to 3GPP Release 17, the number of configurable bands for uplink transmission switching was two, but in 3GPP Release 18, expanding the number of carrier bands to a maximum of four is under discussion.

[0004] To implement UL Tx switching, the switching period (switching time) for UL Tx switching is configured on the terminal via RRC (Radio Resource Control) settings. However, previous standards did not specify a method for configuring the switching time for UL Tx switching between band pairs within band pairs that the terminal does not support. Therefore, there is a concern that settings related to UL Tx switching cannot be properly configured; for example, if different UL Tx switching methods and times are configured between the terminal and the base station, UL Tx switching cannot be operated properly.

[0005] Existing technical documents

[0006] Non-patent literature

[0007] Non-patent document 1: 3GPP TS 38.300 V17.5.0 (2022-06) Summary of the Invention

[0008] The problem that the invention aims to solve

[0009] The present invention was made in view of the above-mentioned problems, and can appropriately set the switching time of UL Tx switching according to the terminal capability of the terminal performing UL Tx switching.

[0010] Methods for solving problems

[0011] According to this embodiment, a terminal includes: a receiving unit that receives setting information from a base station, the setting information including information indicating the switching time of each band pair for UL Tx switching; and a control unit that sets the switching time of each band pair for the terminal based on the setting information, wherein the band pair is a pair of bands in a band combination set in the base station for UL Tx switching, and the set band combination is a band combination not supported by the terminal.

[0012] Invention Effects

[0013] According to this embodiment, the switching time of UL Tx switching can be appropriately set according to the terminal capability of the terminal performing UL Tx switching. Attached Figure Description

[0014] Figure 1 This is a diagram showing the structure of a wireless communication system, example (1).

[0015] Figure 2 This is a diagram representing the structure of a wireless communication system, example (2).

[0016] Figure 3 This is a diagram illustrating an example of UL Tx switching in 3GPP Release 16.

[0017] Figure 4 This is a diagram illustrating an example of UL Tx switching in 3GPP Release 17.

[0018] Figure 5This is a diagram illustrating an example of UL Tx switching in 3GPP Release 18.

[0019] Figure 6 This is a diagram illustrating the location and length of the switching time in UL Tx switching.

[0020] Figure 7 This is a diagram illustrating the location and length of the switching time in UL Tx switching.

[0021] Figure 8 This is a diagram illustrating an example of UE capability, which includes parameters associated with the handover time of UL Tx switching.

[0022] Figure 9 This is a diagram showing an example of an RRC configuration that includes parameters associated with the switching time of UL Tx switching.

[0023] Figure 10 This is a timing diagram illustrating an example of the process related to setting the switching time of UL Tx switching in this embodiment.

[0024] Figure 11 This is a flowchart illustrating an example of a process performed by the base station in this embodiment related to the setting of the handover time for UL Tx switching.

[0025] Figure 12 This is a diagram illustrating an example of control information in this embodiment.

[0026] Figure 13 This is a diagram illustrating an example of the fields included in the control information in this embodiment.

[0027] Figure 14 This is a diagram illustrating an example of the functional structure of a base station in this embodiment.

[0028] Figure 15 This is a diagram illustrating an example of the functional structure of the terminal in this embodiment.

[0029] Figure 16 This is a diagram illustrating an example of the hardware structure of a base station or terminal in this embodiment.

[0030] Figure 17This is a diagram illustrating an example of the structure of the vehicle in this embodiment. Detailed Implementation

[0031] Hereinafter, this embodiment will be described with reference to the accompanying drawings. Furthermore, the embodiment described below is an example, and the application of this invention is not limited to the following embodiment.

[0032] The wireless communication system of this embodiment may appropriately utilize existing technology during operation. However, this existing technology is, for example, existing LTE, but is not limited to existing LTE. Furthermore, unless otherwise stated, the term "LTE" as used in this specification has a broad meaning that includes LTE-Advanced and subsequent modes (e.g., NR).

[0033] In the embodiments described below, terms used in existing LTE systems, 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. However, this is only for ease of explanation, and other names may be used to refer to the same signals and functions. Furthermore, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even signals used in NR are not explicitly labeled "NR-".

[0034] In this embodiment, the duplex mode can be either TDD (Time Division Duplex) or FDD (Frequency Division Duplex) or other modes (e.g., Flexible Duplex).

[0035] In this embodiment, "configure" wireless parameters can refer to either pre-configuring specific values ​​or setting wireless parameters notified by base station 10 or terminal 20.

[0036] Figure 1 This is a diagram illustrating a structural example (1) of the wireless communication system in this embodiment. Figure 1 As shown, the wireless communication system in this embodiment includes a base station 10 and a terminal 20. Figure 1 The image shows a base station 10 and a terminal 20, but this is just one example; there could be multiple terminals.

[0037] Base station 10 is a communication device that provides one or more cells and conducts wireless communication with terminal 20. The physical resources of the wireless signal are defined in the time and frequency domains. The time domain can be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain can be defined by the number of subcarriers or resource blocks. Base station 10 sends synchronization signals and system information to terminal 20. Synchronization signals are, for example, NR-PSS and NR-SSS. System information is transmitted, for example, in NR-PBCH, also known as broadcast information. Synchronization signals and system information can also be referred to as SSB (SS / PBCH block). Figure 1As shown, base station 10 transmits control signals or data to terminal 20 in the DL (Downlink) and receives control signals or data from terminal 20 in the UL (Uplink). Both base station 10 and terminal 20 can perform beamforming and transmit and receive signals. Furthermore, both base station 10 and terminal 20 can apply MIMO (Multiple Input Multiple Output) based communication in the DL or UL. Additionally, both base station 10 and terminal 20 can communicate via secondary cells (SCells) and primary cells (PCells) based on CA (Carrier Aggregation). Further, terminal 20 can also communicate via the primary cell of base station 10 based on DC (Dual Connectivity) and other primary and secondary cell groups (PSCells) of base station 10.

[0038] Terminal 20 is a communication device with wireless communication capabilities, such as a smartphone, mobile phone, tablet computer, wearable terminal, or communication module for M2M (Machine-to-Machine) communication. Figure 1 As shown, terminal 20 utilizes various communication services provided by the wireless communication system by receiving control signals or data from base station 10 in DL and transmitting control signals or data to base station 10 in UL. Furthermore, terminal 20 receives various reference signals transmitted from base station 10 and performs propagation path quality measurements based on the reception results of these reference signals.

[0039] Terminal 20 is capable of carrier aggregation, which bundles multiple cells (multiple CCs (Component Carriers)) to communicate with base station 10. In carrier aggregation, one PCell (Primary cell) and one or more SCells (Secondary cells) are used. Alternatively, a PUCCH-SCell with a PUCCH can also be used.

[0040] Figure 2 This is a diagram illustrating an example (2) of the wireless communication system in this embodiment. Figure 2 An example of the structure of a wireless communication system implementing DC (Dual Connectivity) is shown. Figure 2As shown, the system includes base station 10A, which acts as the MN (Master Node), and base station 10B, which acts as the SN (Secondary Node). Base station 10A and base station 10B are connected to the core network. Terminal 20 can communicate with both base station 10A and base station 10B.

[0041] The cell group provided by base station 10A, which acts as the MN, is called the MCG (Master Cell Group), and the cell group provided by base station 10B, which acts as the SN, is called the SCG (Secondary Cell Group). Furthermore, in the DC, the MCG consists of one PCell and one or more SCells, and the SCG consists of one PSCell (Primary SCG Cell) and one or more SCells.

[0042] The processing operation in this embodiment can be performed by... Figure 1 The system architecture shown can also be executed by... Figure 2 The system architecture shown can be executed by other system architectures as well.

[0043] In this embodiment, base station 10 and terminal 20 perform UL Tx switching (also known as ULTx switching, UL Tx switching). UL Tx switching is a technique for switching the band used for transmission in the UL transmit antenna. Through UL Tx switching, it is possible to dynamically switch between using two antennas to obtain power gain and using one antenna to extend the band.

[0044] Figure 3 This diagram illustrates an example of UL Tx switching in 3GPP (registered trademark) Release 16. Figure 3 As shown, in UL Tx switching in 3GPP Release 16, switching between two bands within one antenna is performed. Figure 3 As shown, in the antenna transmitting #1, UL transmission is performed only in band B, without switching between bands. On the other hand, in the antenna transmitting #2, UL transmission switching is performed between band A and band B. Hereinafter, this method of UL transmission switching will be referred to as Rel-16 1Tx-2Tx or 1Tx-2Tx switching, etc.

[0045] Figure 4This diagram illustrates an example of UL Tx switching in 3GPP Release 17. (See diagram below.) Figure 4 As shown, in UL Tx switching in 3GPP Release 17, switching between two bands (band A and band B) is performed on each of the two antennas (transmit #1 and transmit #2). This method of UL transmission switching will be referred to below as Rel-17 2Tx-2Tx or 2Tx-2Tx switching, etc.

[0046] Figure 5 This diagram illustrates an example of UL Tx switching in 3GPP Release 18. (See diagram below.) Figure 5 As shown, in UL Tx switching in 3GPP Release 18, switching between 3 or 4 bands is performed in each of the two antennas (Transmit #1 and Transmit #2).

[0047] In 3GPP Release 17, for Figure 3 and Figure 4 The various UL Tx switching examples shown (Rel-16 1Tx-2Tx and Rel-17 2Tx-2Tx) specify a switching period before or after UL transmission switching. The switching period is the period during which UL transmission is stopped when terminal 20 switches UL transmission.

[0048] In order to perform UL Tx switching, the terminal and the network (e.g., gNB) need to have a consistent understanding of the “location” and “duration” of the switching time in UL Tx switching. Figure 6 This is a diagram illustrating an example of a ULTx switching where the switching time is located on carrier 1 and the switching time is X μs. Figure 7 This is a diagram illustrating an example of a UL Tx switching where the switching time is located on carrier 2 and the switching time is X μs.

[0049] To ensure consistency between the terminal and the network in their understanding of the "location" and "duration" of handover time during UL Tx switching, as step 1, the terminal reports its UE capabilities to the network. Then, as step 2, the network configures the terminal based on RRC settings.

[0050] Figure 8 This is a diagram illustrating an example of UE capability, including parameters associated with the handover time of UL Tx switching. UE capability, per band pair per band combination, represents the "length" of handover time supported by the terminal, consisting of the band pair of the handover source and the band pair of the handover destination. For example... Figure 8 As shown, the handover period length included in UE capability is represented by switchingPeriodFor2T-r18 and switchingPeriodFor1T-r18. That is, the terminal reports the lengths of both handover periods to the network: the handover period for the first handover (switchingPeriod for 1T switching) and the handover period for the second handover (switchingPeriod for 2T switching).

[0051] Figure 9This diagram illustrates an example of an RRC configuration that includes parameters associated with the handover time of UL Tx switching. The RRC configuration, per perband pair, indicates which of two handover time lengths is applied: the switching period length for 1T switching and the switching period length for 2T switching. That is, the network configures the UL Tx switching time for each terminal, per perband pair, through the RRC configuration. For the perband pair where switching2T-DualUL-r18 is enabled, the length of the 2T switching handover time is applied.

[0052] In the method for setting the handover time for UL Tx switching, the following settings are made through RRC configuration: specifying which band combination should refer to the handover time reported by UE capability. Here, since UE capability related to the handover time of UL Tx switching is reported per band pair per band combination (BC), for example, there are cases where the terminal reports to the network as follows.

[0053] (1) For the combination of bands A, B, C, D (BC {Band A, B, C, D}), the switching time between band pairs (AB) of bands A and B is reported as 35 μs.

[0054] (2) For BC {Band A, B, C, E}, the switching time between band pair AB is reported as 140 us.

[0055] (3) The switching time for BC {Band A, B, C} was not reported.

[0056] In the aforementioned scenario, when configuring UL Tx switching between BC {A, B, C}, the network references the switching time reported by the UE capability (1) or (2) to make the setting since the switching time for BC {Band A, B, C} is not reported. However, in conventional methods for setting the switching time of UL Tx switching, there is no stipulation regarding whether the UE capability (1) or (2) should be referenced. That is, the perception of the "length" of the switching time between AB (band pair AB) becomes inconsistent between the terminal and the network.

[0057] The setting method for UL Tx switching in this embodiment can set the switching time for UL Tx switching between band pairs contained in a band combination that is not supported by the terminal.

[0058] According to the setting method for UL Tx switching (uplink transmission switching) in this embodiment, the length of the switching time is set for terminal 20 in units of band field pairs. For example, the setting information related to UL Tx switching transmitted from base station 10 to terminal 20 may include information indicating the length of the switching time for each band field pair included in the band field combination set for UL Tx switching.

[0059] In this embodiment, the switching time (switching period) of UL Tx switching can refer to the length of the switching period.

[0060] Figure 10 This is a timing diagram illustrating an example of the process related to setting the switching time of UL Tx switching in this embodiment.

[0061] like Figure 10As shown, in step S101, terminal 20 sends terminal capability information (UE capability) to base station 10. This terminal capability information includes parameters associated with the handover time of UL Tx switching. The terminal capability information represents the length of the handover time supported by the terminal, per band pair per band combination.

[0062] In step S102, base station 10 sends configuration information to terminal 20 associated with the handover time of each band pair in the ULTx switching between band pairs. The configuration information includes a parameter representing the length of the handover time for each band pair included in the band combination configured for ULTx switching in base station 10. If terminal 20 supports band combinations in which ULTx switching is configured in base station 10, this parameter may not be set in the configuration information. In other words, if terminal 20 does not support band combinations in which ULTx switching is configured in base station 10, this parameter may be set in the configuration information. The configuration information may be, for example, Radio Resource Control (RRC) information.

[0063] In step S103, the terminal 20 applies the length of the UL Tx switching time to the band pair based on the received setting information.

[0064] The length of the handover time set by the parameters included in the setting information needs to be the following: for example, the length of the handover time supported by terminal 20 for other band combination that includes band combination that has UL Tx switching set (i.e., the length of the handover time reported by UE capability).

[0065] For example, there is a concern that if the length of the handover time set by the parameters included in the setting information is a value for band pairs in any band pair combination (e.g., band pairs from BC{A, B, C, D} and band pairs from BC{A, B, C, E}), then the length of the handover time not supported by terminal 20 will be set. Therefore, for example, the length of the handover time set by the parameters included in the setting information can also be set to: the length of the handover time supported by terminal 20 for a certain common band pair combination (i.e., the length of the handover time reported by UE capability).

[0066] In this embodiment, the base station 10 may send setting information to the terminal 20, including information indicating the switching time of each band pair for ULTx switching between band pairs. The terminal 20 then sets the switching time for each band pair based on the setting information. The band pair may also be a pair of bands in a band combination set in the base station 10 for ULTx switching. The band combination set in the base station 10 may also be a band combination that the terminal does not support.

[0067] Figure 11 This is a flowchart illustrating an example of a process performed by the base station in this embodiment related to the setting of the handover time for UL Tx switching.

[0068] In step S11, base station 10 determines whether terminal 20 supports the band domain combination configured for UL Tx switching. For example, base station 10 may also determine whether the band domain combination configured for UL Tx switching in base station 10 is different from the band domain combination supported by terminal 20 for UL Tx switching contained in the terminal capability information reported by terminal 20. For example, if the combination of multiple band domains in the band domain combination configured for UL Tx switching in base station 10 is the same as the combination of multiple band domains in the band domain combination supported by terminal 20 for UL Tx switching, base station 10 determines that terminal 20 supports the band domain combination configured for UL Tx switching.

[0069] If the condition is YES in step S11, setting information containing parameters is sent to terminal 20. These parameters represent the length of the switching period applied to the band combination set for UL Tx switching.

[0070] If the condition in step S11 is no (NO), setting information is sent to the terminal, which includes parameters containing the length of the switching period of each band pair included in the band combination set as UL Tx switching.

[0071] Figure 12This diagram illustrates an example of the control information in this embodiment. The control information included in this embodiment may be, for example, RRC information. Figure 12 As shown, the RRC information element, as an example of control information, includes a CellGroupConfig information element. The CellGroupConfig information element contains a field, UplinkTxSwitchingBandPairConfig-r18, representing information associated with the setting of UL Tx switching. Further, UplinkTxSwitchingBandPairConfig-r18 includes a parameter, switchingPeriodForSubsetBC, representing the length of the switching period for each band pair included in the band combination set for UL Tx switching. switchingPeriodForSubsetBC can also be a new parameter added in this embodiment.

[0072] like Figure 13 As shown, switchingPeriodForSubsetBC represents the length of the switching time used for ULTx switching between band pairs. For switchingPeriodForSubsetBC, for example, the value of the band pair set for ULTx switching is set to the same value as the length of the switching period for the corresponding band pair supported by terminal 20 (UE). For example, in Figure 13 In the example, for switchingPeriodForSubsetBC, any value of 35μs, 140μs, or 210μs is set as the length of the switching time for the band field pair. Furthermore, the length of the switching time for the band field pair set for switchingPeriodForSubsetBC is not limited to... Figure 13 Examples can also be any value.

[0073] like Figure 12 As shown, switchingPeriodForSubsetBC is set based on the conditions of CondSubsetBC (CondSubsetBC), i.e., SubsetBC. Figure 13As indicated by the SubsetBC condition, switchingPeriodForSubsetBC may be a required field if the UE does not support the band field combination set for UL Tx switching. On the other hand, switchingPeriodForSubsetBC may not be set if the UE does not support the band field combination set for UL Tx switching.

[0074] Through the above embodiments, the switching time of UL Tx switching can be set appropriately according to the terminal capabilities.

[0075] <Structures related to this embodiment>

[0076] (Item 1)

[0077] A terminal having:

[0078] The receiving unit receives configuration information from the base station, the configuration information including information representing the switching time of each band pair in the UL Tx switching; and

[0079] Based on the aforementioned setting information, the control unit sets the switching time for each band pair for the terminal.

[0080] The band field pair is a pair of band fields in a band field combination configured in the base station for the UL Tx switching.

[0081] The set band combination is a band combination that is not supported by the terminal.

[0082] (Item 2)

[0083] The terminal as described in item 1 has: a transmitting unit that transmits terminal capability information to the base station, indicating the terminal's support for band domain combinations for ULTx switching.

[0084] (Item 3)

[0085] As described in item 1, in the terminal, when the set band combination is different from the band combination supported by the terminal for UL Tx switching, information indicating the switching time is included in the setting information.

[0086] (Item 4)

[0087] A base station, having:

[0088] The control unit generates configuration information when the band combination configured for UL Tx switching in the base station is a band combination not supported by the terminal. This configuration information includes information indicating the switching time of each band pair in the UL Tx switching process; and...

[0089] The sending unit sends the setting information to the terminal.

[0090] The setting information enables the terminal to set the switching time for each band pair.

[0091] (Item 5)

[0092] A communication method executed by a terminal, the communication method comprising:

[0093] The step of receiving configuration information from the base station, wherein the configuration information includes information representing the handover time of each band pair in the ULTx switching process; and

[0094] Based on the aforementioned configuration information, the steps for setting the switching time for each band pair on the terminal are as follows:

[0095] The band pair is a pair of bands in a band pair combination set in the base station for UL Tx switching.

[0096] The set band combination is a band combination that is not supported by the terminal.

[0097] Any of the above structures allows for setting the switching time for UL Tx switching between band pairs within a band domain combination that the terminal does not support. Therefore, an appropriate switching time for UL Tx switching can be set according to the terminal's capabilities.

[0098] (Device structure)

[0099] Next, an example of the functional structure of the base station 10 and terminal 20 performing the processes and operations described above will be explained. The base station 10 and terminal 20 include the functions implemented in the above embodiments. However, it is also possible that the base station 10 and terminal 20 each possess only some of the functions described in the embodiments.

[0100] <Base Station 10>

[0101] Figure 14 This diagram illustrates an example of the functional structure of base station 10 in this embodiment. (See diagram for example.) Figure 14As shown, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. Figure 14 The functional structure shown is only one example. As long as the operations in this embodiment can be performed, the functional distinctions and names of the functional units can be arbitrary.

[0102] The transmitting unit 110 includes the function of generating a signal to be sent to the terminal 20 and wirelessly transmitting the signal. Furthermore, the transmitting unit 110 transmits inter-network node messages to other network nodes. The receiving unit 120 includes the function of receiving various signals transmitted from the terminal 20 and obtaining, for example, higher-level information from the received signals. Furthermore, the transmitting unit 110 has the function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, etc., to the terminal 20. Furthermore, the receiving unit 120 receives inter-network node messages from other network nodes.

[0103] The setting unit 130 stores pre-set setting information and various setting information to be sent to the terminal 20. The content of the setting information includes, for example, information related to the switching of UL.

[0104] As described in the embodiments, the control unit 140 performs the settings or controls involved in UL transmission switching. Alternatively, the transmitting unit 110 may include the signal transmission-related functional units of the control unit 140, and the receiving unit 120 may include the signal reception-related functional units of the control unit 140.

[0105] Terminal 20

[0106] Figure 15 This diagram illustrates an example of the functional structure of terminal 20 in this embodiment. (As shown...) Figure 15 As shown, terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. Figure 15 The functional structure shown is only one example. As long as the operations in this embodiment can be performed, the functional distinctions and names of the functional units can be arbitrary.

[0107] The transmitting unit 210 generates a transmission signal based on the transmission data and transmits the transmission signal wirelessly. The receiving unit 220 wirelessly receives various signals and obtains higher-layer signals from the received physical layer signals. Furthermore, the receiving unit 220 has the function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, etc., transmitted from the base station 10. Additionally, for example, as D2D communication, the transmitting unit 210 transmits PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel), etc., to other terminals 20, and the receiving unit 220 receives PSCCH, PSSCH, PSDCH, or PSBCH from other terminals 20.

[0108] The setting unit 230 stores various setting information received from the base station 10 via the receiving unit 220. In addition, the setting unit 230 also stores pre-set setting information. The content of the setting information includes, for example, information related to UL transmission handover.

[0109] As described in the embodiments, the control unit 240 performs the settings or controls involved in UL transmission switching. Alternatively, the transmitting unit 210 may include the signal transmission-related functional units of the control unit 240, and the receiving unit 220 may include the signal reception-related functional units of the control unit 240.

[0110] (Hardware structure)

[0111] The block diagram used in the description of the above embodiments ( Figure 14 and Figure 15 The diagram illustrates blocks organized by function. These functional blocks (structural units) are implemented through any combination of at least one of hardware and software. Furthermore, the implementation method of each functional block is not particularly limited. That is, each functional block can be implemented using a single device that is physically or logically combined, or by directly or indirectly (e.g., using wired, wireless, etc.) connecting two or more physically or logically separate devices, using these multiple devices for implementation. Functional blocks can also be implemented by incorporating software into the aforementioned single device or multiple devices.

[0112] The functions include judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, receiving, sending, output, access, resolution, selection, choosing, establishment, comparison, assumption, expectation, regard as, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning, but are not limited to these. For example, a functional block (structural unit) that implements the sending function is called a transmitting unit or transmitter. Each of these functions, as described above, has no particular limitation on its implementation method.

[0113] For example, in one embodiment of this disclosure, the base station 10, terminal 20, etc., can also function as a computer for processing the wireless communication method of this disclosure. Figure 16 This diagram illustrates an example of the hardware structure of a base station 10 and a terminal 20 according to an embodiment of this disclosure. The base station 10 and the terminal 20 described above may also 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.

[0114] In addition, in the following description, the term "device" can be replaced with circuit, equipment, unit, etc. The hardware structure of base station 10 and terminal 20 can be configured to include one or more of the devices shown in the figure, or it can be configured not to include some of the devices.

[0115] The functions of the base station 10 and the terminal 20 are realized by reading specific software (programs) into hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls communication based on the communication device 1004, or controls at least one of reading out and writing data in the storage device 1002 and the auxiliary storage device 1003.

[0116] The processor 1001, for example, enables the operating system to operate and control the computer as a whole. The processor 1001 may also be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic devices, registers, etc. For example, the control unit 140 and control unit 240 mentioned above may also be implemented by the processor 1001.

[0117] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and performs various processes accordingly. As a program, a program that causes the computer to perform at least a portion of the operations described in the above embodiments can be used. For example, Figure 14 The control unit 140 of the base station 10 shown can also be implemented by a control program stored in the storage device 1002 and operated in the processor 1001. Furthermore, for example, Figure 15 The control unit 240 of the terminal 20 shown can also be implemented by a control program stored in the storage device 1002 and operated in the processor 1001. The various processes described above refer to execution by one processor 1001, but they can also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 can also be implemented using one or more chips. Furthermore, the program can be transmitted from a network via an electrical communication line.

[0118] The storage device 1002 may also be a computer-readable recording medium, such as being composed of at least one of ROM (Read-Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may also be referred to as a register, cache, main memory (main storage device), etc. The storage device 1002 is capable of storing programs (program code), software modules, etc., that can be executed for implementing the communication method according to an embodiment of this disclosure.

[0119] The auxiliary storage device 1003 is a computer-readable recording medium, and may be composed of at least one of the following: CD-ROM (Compact Disc ROM) or other optical discs, hard disks, flexible discs, optical disks (e.g., compact discs, digital multifunction discs, Blu-ray discs), smart cards, flash memory (e.g., cards, sticks, key drives), floppy disks, magnetic stripes, etc. The aforementioned storage medium may also be, for example, a database, server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0120] The communication device 1004 is hardware (transmitting and receiving device) used for communication between computers via at least one of wired and wireless networks, and is also referred to as a network device, network controller, network interface card (NIC), communication module, etc. To implement at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD), the communication device 1004 may also be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. For example, transmitting and receiving antennas, amplifier units, transmitting and receiving units, transmission path interfaces, etc., can also be implemented through the communication device 1004. The transmitting and receiving units can also be physically or logically separated by a transmitting unit and a receiving unit.

[0121] Input device 1005 is an input device that accepts input from external sources (e.g., keyboard, mouse, microphone, switch, button, sensor, etc.). Output device 1006 is an output device that performs output to external sources (e.g., display, speaker, LED light, etc.). Alternatively, input device 1005 and output device 1006 can also be an integrated structure (e.g., touch panel).

[0122] Furthermore, the processor 1001, storage device 1002, and other devices are connected via a bus 1007 for communicating information. The bus 1007 can be configured as a single bus or as different buses used between each device.

[0123] Furthermore, the base station 10 and the terminal 20 can be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or a FPGA (Field Programmable Gate Array), and can also use this hardware to implement part or all of the functional blocks. For example, the processor 1001 can also be implemented using at least one of these hardware components.

[0124] exist Figure 17 An example of the structure of vehicle 2001 is shown. For example... Figure 17As shown, 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, axles 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013. The various methods / implementations described in this disclosure can also be applied to communication devices mounted on the vehicle 2001, for example, to the communication module 2013.

[0125] The drive unit 2002 is configured, for example, as an engine, a motor, or a combination of an engine and a motor. The steering unit 2003 is configured to include at least a steering wheel (also called a handlebar) and to steer at least one of the front and rear wheels based on the operation of the steering wheel by the user.

[0126] The electronic control unit 2010 consists of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021-2029 of the vehicle 2001 are input into the electronic control unit 2010. The electronic control unit 2010 can also be referred to as an ECU (Electronic Control Unit).

[0127] The signals from various sensors 2021 to 2029 include the following: current signal from current sensor 2021 which senses the current of the motor; speed signals of the front and rear wheels obtained by speed sensor 2022; air pressure signals of the front and rear wheels obtained by air pressure sensor 2023; vehicle speed signal obtained by vehicle speed sensor 2024; acceleration signal obtained by acceleration sensor 2025; accelerator pedal depress amount signal obtained by accelerator pedal sensor 2029; brake pedal depress amount signal obtained by brake pedal sensor 2026; shift lever operation signal obtained by shift lever sensor 2027; and detection signals obtained by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0128] The information service unit 2012 comprises various devices such as a car navigation system, audio system, speakers, television, and radio, used to provide (output) various information such as driving information, traffic information, and entertainment information, as well as one or more ECUs that control these devices. The information service unit 2012 uses information obtained from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001. The information service unit 2012 may include input devices that accept input from external sources (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that perform output to external sources (e.g., display, speaker, LED lights, touch panel, etc.).

[0129] The driver assistance system unit 2030 comprises various devices used to provide functions for preventing accidents or reducing the driver's workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning detectors (e.g., GNSS), map information (e.g., high-resolution (HD) maps, autonomous vehicle (AV) maps), gyroscope 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. Furthermore, the driver assistance system unit 2030 sends and receives various information via a communication module 2013 and implements driver assistance or autonomous driving functions.

[0130] The communication module 2013 can communicate with the microprocessor 2031 and the constituent elements of the vehicle 2001 via the communication port. For example, the communication module 2013 sends and receives data with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, front wheel 2007, rear wheel 2008, axle 2009, microprocessor 2031 in the electronic control unit 2010, and memory (ROM, RAM) 2032 and sensors 2021-29 in the vehicle 2001 via the communication port 2033.

[0131] The communication module 2013 can be controlled by the microprocessor 2031 of the electronic control unit 2010 and is a communication device capable of communicating with external devices. For example, it can send and receive various types of information wirelessly with external devices. The communication module 2013 can be located either inside or outside the electronic control unit 2010. External devices can be, for example, base stations, mobile stations, etc.

[0132] The communication module 2013 can also wirelessly transmit to an external device at least one of the signals input to the electronic control unit 2010 from the various sensors 2021-2028 described above, information obtained based on these signals, and information based on input from an external source (user) obtained via the information service unit 2012. The electronic control unit 2010, the various sensors 2021-2028, and the information service unit 2012 can also be referred to as input units that receive input. For example, the PUSCH transmitted by the communication module 2013 can also contain information based on the aforementioned input.

[0133] The communication module 2013 receives various information (traffic information, traffic light information, vehicle-to-vehicle information, etc.) sent from external devices and displays it to the information service unit 2012 of the vehicle 2001. The information service unit 2012 can also be referred to as an output unit that outputs information (e.g., outputs information to devices such as displays and speakers based on the PDSCH received by the communication module 2013 (or data / information decoded from the PDSCH)). Furthermore, the communication module 2013 stores the various information received from external devices in a memory 2032 accessible to the microprocessor 2031. The microprocessor 2031 can also control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021-2029, etc., of the vehicle 2001 based on the information stored in the memory 2032.

[0134] (Supplement to the implementation method)

[0135] The embodiments described above are for illustrative purposes only. However, the invention disclosed herein is not limited to the embodiments described above, and those skilled in the art should understand various variations, modifications, substitutions, and replacements. Specific numerical examples have been used to facilitate understanding of the invention, but unless otherwise stated, these values ​​are merely examples and any appropriate values ​​may be used. The distinctions between items in the above description are not essential in this invention. Items described in two or more items may be combined as needed, and items described in one item may be applied to items described in other items (provided there is no contradiction). The boundaries of functional units or processing units in the functional block diagram are not limited to corresponding to the boundaries of physical components. Physically, multiple functional units may be operated by one component, or multiple components may be used to operate one functional unit. Regarding the processing described in the embodiments, the order of processing may be interchanged as long as there is no contradiction. For ease of explanation, a functional block diagram has been used to describe the base station 10 and terminal 20, but such a device may also be implemented by hardware, software, or a combination thereof. The software operated by the processor of the base station 10 according to this embodiment and the software operated by the processor of the terminal 20 according to this embodiment can be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server and any other suitable storage medium.

[0136] Furthermore, the notification of information is not limited to the methods / implementations described in this disclosure, and other methods may also be used. For example, the notification of information may also be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block)), SIB (System Information Block)), other signals, or combinations thereof. In addition, RRC signaling may also be referred to as an RRC message, such as an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0137] The various methods / implementations described in this disclosure can also be applied to LTE (Long Term Evolution), LTE-A (LTE-Advanced), 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 a decimal)), 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 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), systems utilizing other suitable systems, and at least one next-generation system derived from, extended by, modified by, created by, or defined based on these. Furthermore, multiple systems may be combined (e.g., a combination of LTE and at least one of LTE-A with 5G, etc.) for application.

[0138] The processing procedures, timing, flowcharts, etc., of the various methods / implementations described in this specification may be rearranged in order, provided they do not contradict each other. For example, for the methods described in this disclosure, an exemplary order is used to indicate the elements of various steps, but the order is not limited to the specific order indicated.

[0139] The specific operations described in this specification as being performed by base station 10 may sometimes also be performed by its upper node, depending on the circumstances. Clearly, in a network consisting of one or more network nodes having base station 10, various operations performed for communication with terminal 20 can be performed by base station 10 and at least one of other network nodes besides base station 10 (e.g., consider MME or S-GW, but not limited to these). The above example illustrates the case where there is one other network node besides base station 10, but other network nodes can also be a combination of multiple other network nodes (e.g., MME and S-GW).

[0140] Information or signals described in this disclosure can be output from a higher (or lower) layer to a lower (or higher) layer. They can also be input and output via multiple network nodes.

[0141] Input and output information can be stored in a specific location (e.g., memory) or managed using a management table. Input and output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0142] The determination in this disclosure can be made by a value represented by 1 bit (0 or 1), by a true or false value (Boolean: true or false), or by a comparison of numerical values ​​(e.g., a comparison with a specific value).

[0143] Whether software is called software, firmware, middleware, microcode, hardware description language, or any other name, it should be broadly interpreted to refer to 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, etc.

[0144] Furthermore, software, instructions, and information can also be sent and received via a transmission medium. For example, when software is sent from a website, server, or other remote source using at least one of wired technologies (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technologies (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0145] The information, signals, etc., described in this disclosure can also be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be mentioned throughout the above description, can also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0146] Furthermore, the terms described in this disclosure, as well as those necessary for understanding this disclosure, may be replaced with terms that have the same or similar meanings. For example, at least one of the channel and the symbol may also be a signal (signaling). Additionally, a signal may also be a message. Furthermore, a component carrier (CC) may also be referred to as a carrier frequency, cell, frequency carrier, etc.

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

[0148] Furthermore, the information, parameters, etc., described in this disclosure can be represented by absolute values, relative values ​​relative to a specific value, or other corresponding information. For example, wireless resources can also be indicated by an index.

[0149] The names used for the parameters described above are not limiting names in any respect. Furthermore, the mathematical formulas, etc., using these parameters sometimes differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name; therefore, the various names assigned to these various channels and information elements are not limiting names in any respect.

[0150] In this disclosure, the terms "base station (BS)," "wireless base station," "base station device," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" are used interchangeably. There are also instances where terms such as macro cell, small cell, femtocell, and picocell are used to refer to base stations.

[0151] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, its overall coverage area can be divided into several smaller areas, each of which can also provide communication services through a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). Terms such as "cell" or "sector" refer to a portion or all of the coverage area of ​​at least one of the base station and base station subsystem providing communication services within that coverage area.

[0152] In this disclosure, the information sent by the base station to the terminal can also be rewritten as the base station instructing the terminal to perform information-based control / operation.

[0153] In this disclosure, the terms “Mobile Station (MS),” “user terminal,” “user equipment (UE),” and “terminal” are used interchangeably.

[0154] For those skilled in the art, there are also instances where mobile stations are referred to as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, handsets, user agents, mobile clients, clients, or several other appropriate terms.

[0155] At least one of the base station and the mobile station can also be referred to as a transmitting device, a receiving device, a communication device, etc. Furthermore, at least one of the base station and the mobile station can also be equipment mounted on a mobile body, the mobile body itself, etc. The mobile body refers to a movable object whose speed of movement is arbitrary. In addition, it naturally includes situations where the mobile body is stationary. The mobile body includes, for example, vehicles, transport vehicles, automobiles, autonomous two-wheelers, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trailers, rickshaws, ships (boats and other watercraft), airplanes, rockets, artificial satellites, drones (registered trademark), multi-rotor aircraft, quadcopters, balloons, and objects mounted on them, and is not limited to these. Furthermore, the mobile body can also be a mobile body that moves autonomously based on operating commands. It can be a means of transportation (e.g., vehicles, airplanes, etc.), a mobile body that moves unmanned (e.g., drones, autonomous vehicles, etc.), or a robot (humanized or unmanned). In addition, at least one of the base station and the mobile station also includes a device that is not necessarily mobile during the communication operation. For example, at least one of the base station and the mobile station can also be an IoT (Internet of Things) device such as a sensor.

[0156] Furthermore, the base station in this disclosure can also be replaced by a user terminal. For example, various methods / implementations of this disclosure can be applied to a structure where the communication between the base station and the user terminal is replaced by communication between multiple terminals 20 (e.g., it can also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, it can also be configured such that the terminal 20 has the functions of the base station 10 described above. In addition, terms such as "uplink" and "downlink" can also be replaced with terms corresponding to inter-terminal communication (e.g., "side"). For example, uplink channel, downlink channel, etc. can also be replaced with side channel.

[0157] Similarly, the user terminal in this disclosure can also be replaced by a base station. In this case, it can also be configured such that the base station has the functions of the user terminal described above.

[0158] The terms "determining" and "determining" as used in this disclosure encompass a wide variety of actions. For example, "determining" or "determining" can include actions such as judging, calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or other data structure), and ascertaining. Furthermore, "determining" or "determining" can include actions such as receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, and accessing (e.g., accessing data in a storage device). Additionally, "determining" or "determining" can include actions such as resolving, selecting, choosing, establishing, and comparing. That is, "judgment" and "decision" can include situations where certain actions are regarded as having been "judged" or "decided". In addition, "judgment (decision)" can also be replaced by "assuming", "expecting", "considering", etc.

[0159] The terms “connected,” “coupled,” or all variations thereof, refer to all direct or indirect connections or combinations between two or more elements, and can include cases where there is one or more intermediate elements between two mutually “connected” or “coupled” elements. The connection or combination between elements can be physical, logical, or a combination thereof. For example, “connected” can also be replaced by “access.” In the context of this disclosure, it is possible to consider two elements being mutually “connected” or “coupled” using at least one or more wires, cables, or printed electrical connections, and, as several non-limiting and non-exclusive examples, being mutually “connected” or “coupled” using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, and light (both visible and invisible) region.

[0160] The reference signal can also be simply referred to as RS (Reference Signal), and may also be called a pilot depending on the standard applied.

[0161] As used in this disclosure, the term "based on" does not imply "based on only" unless otherwise specified. In other words, the term "based on" means both "based on only" and "based on at least".

[0162] Any reference to elements using the designations "first," "second," etc., as used in this disclosure does not comprehensively limit the quantity or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Therefore, references to the first and second elements do not imply that only two elements may be used, or that the first element must take precedence over the second element in some form.

[0163] Alternatively, the "components" in the structure of the above devices can be replaced with "parts", "circuit", "equipment", etc.

[0164] In this disclosure, the terms “include,” “including,” and variations thereof, as well as the term “comprising,” refer to inclusion. Furthermore, the term “or” as used in this disclosure does not mean XOR.

[0165] A wireless frame can also consist of one or more frames in the time domain. These frames can also be referred to as subframes in the time domain. Furthermore, a subframe can also consist of one or more time slots in the time domain. A subframe can also be a fixed time length (e.g., 1 ms) independent of the parameter set (numerology).

[0166] A parameter set can also be a set of communication parameters applied in at least one of the transmission and reception of a signal or channel. For example, a parameter set can also represent 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 structure, specific filtering processing performed by the transmitter and receiver in the frequency domain, and specific windowing processing performed by the transmitter and receiver in the time domain.

[0167] In the time domain, a time slot can also be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.). A time slot can also be a time unit based on a set of parameters.

[0168] A time slot can also contain multiple mini-time slots. Each mini-time slot can also consist of one or more symbols in the time domain. Furthermore, a mini-time slot can also be called a sub-time slot. A mini-time slot can also consist of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a mini-time slot can also be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using mini-time slots can also be called PDSCH (or PUSCH) mapping type B.

[0169] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols can also be referred to by their respective other names.

[0170] For example, a subframe can also be called a Transmission Time Interval (TTI), multiple consecutive subframes can also be called a TTI, and a time slot or a mini-time slot can also be called a TTI. That is, at least one of a subframe and a TTI can be a subframe in existing LTE (1ms), a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. In addition, the unit representing TTI may not be called a subframe, but rather a time slot, mini-time slot, etc.

[0171] Here, TTI refers, for example, to the smallest unit of time for scheduling in wireless communication. For instance, in an LTE system, the base station schedules the allocation of radio resources (frequency bandwidth, transmit power, etc., available to each terminal 20) in TTI units for each terminal 20. However, the definition of TTI is not limited to this.

[0172] TTI can also be a unit of time for transmitting channel-coded data packets (transmission blocks), code blocks, codewords, etc., and can also be a unit of processing such as scheduling and link adaptation. In addition, when a TTI is given, the actual time interval (e.g., the number of symbols) mapped to transmission blocks, code blocks, codewords, etc. can be shorter than the TTI.

[0173] In addition, where one time slot or one mini-time slot is referred to as a TTI, more than one TTI (i.e., more than one time slot or more than one mini-time slot) can also be the minimum time unit for scheduling. Furthermore, the number of time slots (mini-time slots) constituting the minimum time unit of the schedule can also be controlled.

[0174] A TTI with a duration of 1ms can also be referred to as a normal TTI (TTI in LTE Rel.8-12), standard TTI, long TTI, normal subframe, standard subframe, long subframe, time slot, etc. A TTI shorter than a normal TTI can also be referred to as a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, mini time slot, sub-time slot, time slot, etc.

[0175] In addition, long TTIs (e.g., normal TTIs, subframes, etc.) can be replaced with TTIs with a duration of more than 1ms, and short TTIs (e.g., shortened TTIs, etc.) can be replaced with TTIs with a duration of less than long TTIs but more than 1ms.

[0176] A resource block (RB) is a unit of resource allocation in both the time and frequency domains. In the frequency domain, it can also contain one or more consecutive subcarriers. The number of subcarriers in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers in an RB can also be determined based on the parameter set.

[0177] Furthermore, the time domain of an RB can also contain one or more symbols, or it can be the length of a time slot, a mini-time slot, a subframe, or a TTI. A TTI, a subframe, etc., can also be composed of one or more resource blocks.

[0178] In addition, one or more RBs can also be referred to as Physical Resource Block (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB Pair, RB Pair, etc.

[0179] Furthermore, a resource block can also consist of one or more resource elements (REs). For example, an RE can also be a radio resource area consisting of a subcarrier and a symbol.

[0180] The Bandwidth Part (BWP) (also known as partial bandwidth, etc.) can also represent a subset of contiguous common resource blocks (RBs) used for a certain parameter set in a certain carrier. Here, common RBs can also be determined by the index of RBs based on the common reference point of that carrier. PRBs can also be defined in a BWP and numbered within that BWP.

[0181] A BWP can also include a UL BWP and a DL BWP. For a UE, one or more BWPs can be set within a single carrier.

[0182] At least one of the configured BWPs can be active, and the UE may not intend to transmit or receive specific signals / channels outside of the active BWPs. Furthermore, terms such as "cell" and "carrier" in this disclosure can be replaced with "BWP".

[0183] The structures described above, such as radio frames, subframes, time slots, mini-time slots, and symbols, are merely illustrative. For example, the number of subframes contained in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots contained within a time slot, the number of symbols and RBs contained in a time slot or mini-time slot, the number of subcarriers contained in an RB, and the number of symbols in a TTI, symbol length, and cyclic prefix (CP) length can be varied in many ways.

[0184] In this disclosure, for example, in cases where articles are added through translation, such as a, an, and the in English, the disclosure may also include cases where the noun following these articles is in a plural form.

[0185] In this disclosure, the term "A is different from B" can also mean "A and B are different from each other." Additionally, the term can also mean "A and B are each different from C." Terms such as "separate" and "combined" can also be interpreted in the same way as "different."

[0186] The various methods / implementations described in this disclosure can be used individually, in combination, or switched during execution. Furthermore, notification of specific information (e.g., a "It is X" notification) is not limited to explicit notification; it can also be implicit (e.g., not notifying the recipient of that specific information).

[0187] The present disclosure has been described in detail above, but it will be apparent 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 ways without departing from the spirit and scope of the present disclosure as determined by the claims. Therefore, the description in this disclosure is for illustrative purposes only and is not intended to be restrictive in any way.

[0188] Explanation of reference numerals in the attached figures

[0189] 10 base stations

[0190] 110 Transmitting Unit

[0191] 120 receiving unit

[0192] 130 Setting Unit

[0193] 140 Control Unit

[0194] 20 terminals

[0195] 210 Transmitting Unit

[0196] 220 receiving unit

[0197] 230 Setting Unit

[0198] 240 Control Unit

[0199] 1001 processor

[0200] 1002 Storage device

[0201] 1003 Auxiliary storage device

[0202] 1004 Communication device

[0203] 1005 Input Device

[0204] 1006 Output Device

[0205] Vehicle 2001

[0206] 2002 Drive Unit

[0207] 2003 Steering Unit

[0208] 2004 Accelerator Pedal

[0209] 2005 Brake Pedal

[0210] 2006 gear shift lever

[0211] 2007 front wheel

[0212] 2008 rear wheel

[0213] 2009 axle

[0214] 2010 Electronic Control Unit

[0215] 2012 Information Service Unit

[0216] 2013 Communication Module

[0217] 2021 Current Sensor

[0218] 2022 Speed ​​Sensor

[0219] 2023 Barometric Pressure Sensor

[0220] 2024 vehicle speed sensor

[0221] 2025 Accelerometer

[0222] 2026 Brake Pedal Sensor

[0223] 2027 Shift Lever Sensor

[0224] 2028 Object Detection Sensor

[0225] 2029 Accelerator Pedal Sensor

[0226] 2030 Driver Assistance System Unit

[0227] 2031 microprocessor

[0228] 2032 Memory (ROM, RAM)

[0229] 2033 Communication port (IO port).

Claims

1. A terminal, comprising: The receiving unit receives configuration information from the base station, the configuration information including information indicating the handover time of each band pair for uplink transmission handover between band pairs; and Based on the aforementioned setting information, the control unit sets the switching time for each band pair for the terminal. The band field pair is a pair of band fields in a band field combination that is configured in the base station for sending a handover for the uplink. The set band combination is a band combination that is not supported by the terminal.

2. The terminal as described in claim 1, comprising: The transmitting unit sends terminal capability information to the base station, indicating the band combination supported by the terminal for uplink transmission switching.

3. The terminal as described in claim 1, wherein, When the set band combination is different from the band combination supported by the terminal for uplink transmission switching, the information indicating the switching time is included in the setting information.

4. A base station, comprising: The control unit generates setting information containing information about the handover time of each band pair indicating uplink transmission handover between band pairs when the band combination set for uplink transmission handover in the base station is a band combination not supported by the terminal; and The sending unit sends the setting information to the terminal. The setting information enables the terminal to set the switching time for each band pair.

5. A communication method executed by a terminal, the communication method comprising: The step of receiving configuration information from the base station, wherein the configuration information includes information indicating the handover time of each band pair for uplink handover between band pairs; and Based on the aforementioned configuration information, the steps for setting the switching time for each band pair on the terminal are as follows: The band field pair is a pair of band fields in a band field combination that is configured in the base station for sending a handover for the uplink. The set band combination is a band combination that is not supported by the terminal.

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