Terminal, base station, and communication method

Abstract

The terminal includes: a control unit that determines the number of resource blocks to be allocated to a physical uplink control channel that satisfies a certain bandwidth, and maps the physical uplink control channel to physical resources; and a transmission unit that transmits the physical resources to a base station.

Description

Technical Field

[0001] This invention relates to a terminal, a base station, and a communication method in a wireless communication system. Background Art

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

[0003] In NR Release 17, the use of higher frequency bands than in previous releases (e.g., Non-Patent Document 2) was investigated. For example, the applicable parameter set, including subcarrier spacing, channel bandwidth, etc., in the 52.6 GHz to 71 GHz band, physical layer design, and obstacles envisioned in actual wireless communication were studied.

[0004] Existing technical documents

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 38.300V16.2.0 (2020-07)

[0007] Non-patent document 2: 3GPP TS 38.306V16.1.0 (2020-07) Summary of the Invention

[0008] Problems to be solved by the invention

[0009] In the use of higher frequency bands for new applications, regulations related to peak EIRP (equivalent isotropically radiated power) have been stipulated in various countries. On the other hand, it is envisioned that when using the conventional uplink channel format, the bandwidth occupied in this band becomes very narrow depending on the number of allocated resource blocks, which may lead to a situation where the regulations related to peak EIRP are not met.

[0010] The present invention was made in view of the above circumstances, and in a wireless communication system, it is possible to perform resource allocation adapted to the frequency band.

[0011] means for solving problems

[0012] According to the disclosed technology, a terminal is provided, the terminal having: a control unit that determines the number of resource blocks allocated to a physical uplink control channel that satisfies a certain bandwidth, and maps the physical uplink control channel to physical resources; and a transmission unit that transmits the physical resources to a base station.

[0013] Invention Effects

[0014] According to the disclosed technology, in a wireless communication system, it is possible to perform resource allocation adapted to the frequency band. Attached Figure Description

[0015] Figure 1 This is a diagram illustrating a structural example of a wireless communication system according to an embodiment of the present invention.

[0016] Figure 2 This is a diagram illustrating an example of the frequency range in an embodiment of the present invention.

[0017] Figure 3 This is a flowchart illustrating an example (1) of PUCCH in an embodiment of the present invention.

[0018] Figure 4 This is a flowchart illustrating an example (2) of PUCCH in an embodiment of the present invention.

[0019] Figure 5 This is a diagram illustrating an example of the functional structure of a base station 10 in an embodiment of the present invention.

[0020] Figure 6 This is a diagram illustrating an example of the functional structure of terminal 20 in an embodiment of the present invention.

[0021] Figure 7 This is a diagram illustrating an example of the hardware structure of a base station 10 or a terminal 20 in an embodiment of the present invention. Detailed Implementation

[0022] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, the embodiments described below are merely examples, and the application of the present invention is not limited to the embodiments described below.

[0023] When the wireless communication system of the embodiments of the present invention is in operation, existing technology may be appropriately used. 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).

[0024] Furthermore, in the embodiments of the present invention described below, terms 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) used in existing LTE are used. This is for ease of explanation; similar signals and functions may also be referred to by other names. In addition, 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 necessarily explicitly written as "NR-".

[0025] Furthermore, in embodiments of the present invention, the duplex mode can be TDD (Time Division Duplex), FDD (Frequency Division Duplex), or other modes (e.g., Flexible Duplex).

[0026] Furthermore, in embodiments of the present invention, the "configure" wireless parameters can be pre-configured predetermined values, or wireless parameters notified from the base station 10 or the terminal 20 can be set.

[0027] Figure 1 This is a diagram illustrating a structural example of a wireless communication system according to an embodiment of the present invention. (See diagram for example.) Figure 1 As shown, the wireless communication system in the embodiments of the present invention 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 an example and there can be multiple terminals.

[0028] Base station 10 is a communication device that provides one or more cells and wirelessly communicates 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, via NR-PBCH, also known as broadcast information. Synchronization signals and system information can be referred to as SSB (SS / PBCH block). Figure 1 As shown, base station 10 sends control signals or data to terminal 20 via DL (Downlink) and receives control signals or data from terminal 20 via UL (Uplink). Both base station 10 and terminal 20 are capable of beamforming for signal transmission and reception. Furthermore, both base station 10 and terminal 20 can apply MIMO (Multiple Input Multiple Output) based communication to DL or UL. Additionally, both base station 10 and terminal 20 can communicate via CA (Carrier Aggregation) based secondary cells (SCell) and primary cells (PCell). Furthermore, terminal 20 can communicate via DC (Dual Connectivity) based primary cells of base station 10 and other primary / secondary cell group cells of base station 10.

[0029] Terminal 20 is a communication device with wireless communication capabilities, such as a smartphone, mobile phone, tablet computer, wearable terminal, or M2M (Machine-to-Machine) communication module. Figure 1 As shown, terminal 20 receives control signals or data from base station 10 via DL, and transmits control signals or data to base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. 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.

[0030] Figure 2 This is a diagram illustrating an example of the frequency range in an embodiment of the present invention. In the NR specifications of 3GPP Releases 15 and 16, for example, the use of frequency bands above 52.6 GHz was investigated. Additionally, as... Figure 2 As shown, the currently defined frequency range (FR) 1 is the band from 410 MHz to 7.125 GHz, with a subcarrier spacing (SCS) of 15, 30, or 60 kHz and a bandwidth of 5 MHz to 100 MHz. FR2 is the band from 24.25 GHz to 52.6 GHz, with an SCS of 60, 120, or 240 kHz and a bandwidth of 50 MHz to 400 MHz. For example, a new application could be envisioned with a frequency band from 52.6 GHz to 114.25 GHz.

[0031] Peak transmit power is typically limited by law. Here, for example, according to a regulation in the 57–71 GHz range, the limitations related to EIRP (equivalent isotropically radiated power) are as follows.

[0032] 1) Maximum average EIRP 40dBm

[0033] 2) Maximum peak EIRP 43dBm

[0034] 3) When the transmission bandwidth (BW) is less than 100MHz, the maximum peak conducted output power is 500mW × transmission bandwidth / 100MHz.

[0035] 4) With a transmission bandwidth (BW) of 100MHz or higher, the maximum peak conducted output power is 500mW.

[0036] As shown in Table 1, some previous PUCCH formats included a single resource block (RB) allocation. For example, this is equivalent to setting the number of resource blocks to 1 in PUCCH formats 0 / 1 / 4 and 2 / 3.

[0037] Table 1

[0038] Format PUCCH format 0 PUCCH Format 1 PUCCH Format 2 PUCCH Format 3 PUCCH format 4 RB size 1RB 1RB 1-16RBs 1-16RBs 1RB

[0039] As mentioned above, there are cases where the bandwidth allocated to a resource block in the PUCCH format is not as specified above, for example, in the 60 GHz unlicensed band domain, satisfying the maximum PSD (Power Spectrum Density) limit and reaching the sufficient length required to achieve the maximum permissible EIRP.

[0040] Therefore, a method for allocating multiple resource blocks to PUCCH was studied. For example, when a bandwidth exceeding 3.98MHz is required to allocate PUCCH resources in order to achieve the maximum allowable EIRP, in a 480kHz or 960kHz SCS, the bandwidth of a single resource block is 5.76MHz or 11.52MHz, respectively, which has sufficient length.

[0041] On the other hand, in 120kHz or 240kHz SCS, in order to set a bandwidth exceeding 3.98MHz, the length of a single resource block is insufficient. To achieve the maximum allowable EIRP, at least three resource blocks or two resource blocks are required respectively.

[0042] As mentioned above, in order to achieve maximum allowable EIRP, PUCCH enhancement is required in the unlicensed band domain.

[0043] Therefore, in order to meet the regulations of various countries, maximize the allowable EIRP, and strengthen the coverage of PUCCH, the following 1) and 2) are proposed.

[0044] 1) The number of resource blocks can be set for each PUCCH format.

[0045] 2) Apply SCS to ensure that a resource block allocated to PUCCH meets the required bandwidth.

[0046] Figure 3 This is a flowchart illustrating an example (1) of the PUCCH in an embodiment of the present invention. In step S11, terminal 20 allocates a number of resource blocks to the PUCCH to achieve the required bandwidth. The number X of resource blocks allocated to the PUCCH can be set as needed, for example, it can be predetermined by a specification or set via RRC (Radio Resource Control). That is, base station 10 can set the number X of resource blocks allocated to the PUCCH to terminal 20 via RRC signaling. In addition, a resource block is an example of a unit in the frequency domain; for example, other units in the frequency domain, such as the number of subcarriers, can also be used.

[0047] The number of resource blocks X allocated to the PUCCH is a value that satisfies the required bandwidth. Furthermore, the number of resource blocks X allocated to the PUCCH can be determined based on the SCS (Self-Size Capacity). For example, three resource blocks can be allocated to the PUCCH with an SCS of 120 kHz, two resource blocks with an SCS of 240 kHz, one resource block with an SCS of 480 kHz, and one resource block with an SCS of 960 kHz. Additionally, the number of resource blocks X is an example of representing size in the frequency domain; other expressions representing size in the frequency domain, such as the number of subcarriers Y, can also be used.

[0048] Furthermore, the number of resource blocks X allocated to the PUCCH can be determined based on the TCI (Transmission Configuration Indicator) or the RRC information element "PUCCH-SpatialRelationInfo". TCI and PUCCH-SpatialRelationInfo are parameters related to spatial multiplexing, such as setting the beams applied to the PUCCH.

[0049] For example, one resource block can be set for PUCCH when the TCI state ID is 0, two resource blocks can be set for PUCCH when the TCI state ID is 1, and three resource blocks can be set for PUCCH when the TCI state ID is 2.

[0050] For example, when PUCCH-SpatialRelationInfo is activated via higher-level parameters, the number of resource blocks allocated to the PUCCH can be set according to PUCCH-SpatialRelationInfo. On the other hand, when PUCCH-SpatialRelationInfo is not provided from higher levels, the number of resource blocks allocated to the PUCCH can be set according to TCI status ID.

[0051] The number of resource blocks allocated to PUCCH and the number of possible values ​​can be specified in advance by the specification, set by RRC, or notified by DCI (Downlink Control Information).

[0052] As mentioned above, the number of resource blocks X can be determined based on the RRC information element, the value of DCI, or parameters related to space reuse.

[0053] For PUCCH resource allocation, it can be assigned to contiguous resources, non-contiguous resources, or through a bitmap based on Resource Block Groups (RBGs). The RBG-based bitmap can be the same as that of frequency-domain resource allocation type 0.

[0054] In the next step S12, terminal 20 maps the PUCCH to a physical resource. As described in 1) to 5) below, terminal 20 can map the PUCCH to a physical resource.

[0055] 1) The transmission is repeatedly mapped to each of the multiple allocated resource blocks. For example, if the number of allocated resource blocks is X, the interlace value can be set to 0 and the interlace number can be set to X.

[0056] 2) In the case of PUCCH format 0 and PUCCH format 1, new sequences are used. For example, as the resources allocated to the frequency domain increase from the previous PUCCH format 0 and PUCCH format 1, sequences with longer lengths than those used in the previous PUCCH format 0 and PUCCH format 1 can be used.

[0057] 3) In the cases of PUCCH format 2 and PUCCH format 3, adjust the bit rate r and modulation order Q. m Number of PUCCH symbols N symb－UCI PUCCH Nsc, the number of subcarriers per resource block in each PUCCH format ，ctrl RB You can also adjust one or more of these parameters. Additionally, exceptions can be made when frequency domain resources cannot be adjusted by modifying these parameters. For example, as the resources allocated to the frequency domain have increased since the earlier PUCCH formats 2 and 3, the code rate or modulation order can be reduced.

[0058] 4) In the case of PUCCH format 2 and PUCCH format 3, add UCI bits to the PUCCH format or add reference signals to the physical resources. For example, as the resources allocated to the frequency domain increase from the previous PUCCH format 2 and PUCCH format 3, the insertion density of the reference signal can be increased, or padding bits can be added.

[0059] 5) Multiplexing can be performed using TDD-OCC (Time Division Duplex Orthogonal Cover Code). For example, it can be multiplexed with the PUCCH of other users. Alternatively, it can be multiplexed using FDD-OCC (Frequency Division Duplex Orthogonal Cover Code).

[0060] Options 1) through 5) above can be applied independently of each PUCCH format. Furthermore, options 1) through 5) above can be combined and applied to each PUCCH format.

[0061] Additionally, terminal 20 can report to base station 10 whether it supports resource block allocation for the aforementioned PUCCH based on UE capabilities. Furthermore, proposal 1) above and proposal 2) below, or any of these options, can be combined. Additionally, the aforementioned proposals can be supported when specific higher-layer parameters are set. For example, if these higher-layer parameters are not provided, the number of resource blocks allocated to the PUCCH can be set according to current specifications, or according to new specifications for unlicensed bands exceeding 52.6 GHz, or can be notified via DCI. Furthermore, UE capabilities can be expressed as UE capability information, which represents information about the capabilities of terminal 20 notified to base station 10 by terminal 20.

[0062] Figure 4 This is a flowchart illustrating example (2) of the PUCCH in an embodiment of the present invention. In step S21, terminal 20 applies an SCS to the PUCCH to achieve the required bandwidth in a resource block. For example, the SCS applied to the PUCCH may be different from the SCS applied to other channels. Furthermore, for example, terminal 20 may apply an SCS to the PUCCH to satisfy the bandwidth required by the maximum permissible EIRP in a resource block, and use the PUCCH format specified in the current specification. For example, for a 480kHz or 960kHz SCS, in order to satisfy the bandwidth required in a resource block, either a 480kHz or 960kHz SCS may be applied to the PUCCH.

[0063] In addition, multiple SCSs can be set as candidates to be applied to the PUCCH. The SCS can be selected based on the TCI or RRC information element "PUCCH-SpatialRelationInfo". For example, a 120kHz SCS can be applied to the PUCCH when the TCI state ID is 0, a 240kHz SCS when the TCI state ID is 1, and a 480kHz SCS when the TCI state ID is 2.

[0064] For one or more SCSs applied to the PUCCH, configuration can be specified through the standard, configured via RRC, or notified via DCI. For example, multiple SCSs can be configured according to the RRC information element "PUCCH-SpatialRelationInfo". The choice of which SCS to use can be notified via DCI or determined by the standard. Additionally, terminal 20 can report to base station 10 whether it supports the aforementioned SCS configuration methods for the PUCCH, based on UE capabilities.

[0065] Additionally, the above proposals can be supported if specific higher-level parameters are set. For example, if these higher-level parameters are not provided, the SCS applied to PUCCH can be set according to the current specifications, such as the new specifications for unlicensed bands beyond 52.6 GHz, or it can be notified via DCI.

[0066] Additionally, step S22 can be combined with Figure 3 The same procedure S12 is performed.

[0067] Furthermore, when the SCS applied in the PUCCH differs from that in other channels, the terminal 20 can anticipate the handover delay of the SCS. Additionally, the terminal 20 can report to the base station 10, based on the UE's capabilities, whether it supports the aforementioned SCS setting method for the PUCCH.

[0068] Additionally, the above proposals can be supported if specific higher-level parameters are set. For example, if these higher-level parameters are not provided, the number of candidate SCSs for PUCCH can be set according to the current specifications, such as new specifications for unlicensed bands beyond 52.6 GHz, or it can be notified via DCI.

[0069] Through the above embodiments, base station 10 and terminal 20 can set the bandwidth of PUCCH that meets the requirements related to peak EIRP by controlling the number of resource blocks or SCS.

[0070] That is, in a wireless communication system, it is possible to perform resource allocation adapted to the frequency band.

[0071] (Device Structure)

[0072] Next, an example of the functional structure of the base station 10 and terminal 20 implementing the processes and operations described above will be explained. The base station 10 and terminal 20 include the functions of the embodiments described above. However, the base station 10 and terminal 20 may each have only a portion of the functions described in the embodiments.

[0073] <Base Station 10>

[0074] Figure 5 This is a diagram illustrating an example of the functional structure of a base station 10 according to an embodiment of the present invention. (See diagram for example.) Figure 5 As shown, the base station 10 includes a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. Figure 5 The functional structure shown is only one example. The functional divisions and names of the functional units can be arbitrary, as long as the actions involved in the embodiments of the present invention can be performed.

[0075] The transmitting unit 110 includes the function of generating a signal to be transmitted 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.

[0076] The setting unit 130 stores preset setting information and various setting information sent to the terminal 20. The content of the setting information includes, for example, information related to measurement settings.

[0077] As described in the embodiment, the control unit 140 performs control related to the setting of the measurement. Furthermore, the control unit 140 performs scheduling. Alternatively, the signal transmission-related functions of the control unit 140 may be included in the transmission unit 110, and the signal reception-related functions of the control unit 140 may be included in the reception unit 120.

[0078] Terminal 20

[0079] Figure 6 This is a diagram illustrating an example of the functional structure of terminal 20 in an embodiment of the present invention. (See diagram for example.) Figure 6 As shown, the terminal 20 includes a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. Figure 6The functional structure shown is only one example. The functional divisions and names of the functional units can be arbitrary, as long as the actions involved in the embodiments of the present invention can be performed.

[0080] 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, 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 as D2D communication, and the receiving unit 220 receives PSCCH, PSSCH, PSDCH, or PSBCH from other terminals 20.

[0081] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220. In addition, the setting unit 230 also stores preset setting information. The content of the setting information includes, for example, information related to measurement settings.

[0082] As described in the embodiment, the control unit 240 performs control related to the setting of the measurement. Alternatively, the function unit related to signal transmission in the control unit 240 may be included in the transmission unit 210, and the function unit related to signal reception in the control unit 240 may be included in the reception unit 220.

[0083] (Hardware Structure)

[0084] The block diagram used in the description of the above embodiments ( Figure 5 and Figure 6 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, there are no particular limitations on the implementation method of each functional block. 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. Functional blocks can also be implemented by combining software with one or more of the aforementioned devices.

[0085] Functionally, it includes functions such as judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, receiving, sending, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning, but is not limited to these. For example, the functional block (structural part) that enables transmission is called the transmitting unit or transmitter. In short, as mentioned above, there are no particular limitations on the implementation method.

[0086] 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 7 This is a diagram illustrating 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 configured as a computer device that physically includes a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, and a bus 1007, etc.

[0087] Additionally, in the following description, the term "device" can be replaced with "circuit," "device," "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 figures, or it can be configured not to include some of the devices.

[0088] The functions of the base station 10 and the terminal 20 are implemented by reading predetermined software (programs) into hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls the communication of 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.

[0089] The processor 1001 controls the computer as a whole, for example, by enabling the operating system to function. The processor 1001 may also be a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, etc. For example, the control unit 140 and control unit 240 described above can also be implemented using the processor 1001.

[0090] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage devices 1003 and communication devices 1004, and performs various processes accordingly. As a program, a program is used that causes the computer to perform at least a portion of the actions described in the above embodiments. For example, Figure 5 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 by the processor 1001. Furthermore, for example, Figure 6 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 by the processor 1001. Regarding the various processes described above, although it has been stated that the various processes are executed by one processor 1001, the various processes can also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 can also be installed using more than one chip. Furthermore, the program can also be transmitted from a network via a telecommunications line.

[0091] Storage device 1002 is a computer-readable recording medium, and may be composed of at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. Storage device 1002 may also be referred to as a register, cache, main memory (main storage device), etc. Storage device 1002 is capable of storing programs (program code), software modules, etc., that are executable for implementing the communication method according to one embodiment of this disclosure.

[0092] The auxiliary storage device 1003 is a computer-readable recording medium, such as at least one of an optical disc like a CD-ROM (CompactDisc ROM), a hard disk drive, a floppy disk, a magneto-optical disk (e.g., a compact disk, a digital multipurpose disk, a Blu-ray disc, a smart card), a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic stripe, etc. The aforementioned storage medium may, for example, be a database, a server, or other suitable media that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0093] The communication device 1004 is hardware (transceiver) used for communication between computers via at least one of a wired network and a wireless network. For example, it may also be referred to as a network device, network controller, network interface card (NIC), communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, duplexer, filter, frequency synthesizer, etc., to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, transceiver antennas, amplifiers, transceiver units, transmission path interfaces, etc., can also be implemented using the communication device 1004. The transceiver unit can be physically or logically separated from the transmitting unit and the receiving unit.

[0094] 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, etc.). Alternatively, input device 1005 and output device 1006 can also be integrated (e.g., a touch panel).

[0095] Furthermore, the processor 1001 and storage device 1002, among other devices, are connected via a bus 1007 for communicating information. The bus 1007 can be configured using a single bus or different buses for each device.

[0096] 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 installed using at least one of these hardware components.

[0097] (Summary of Implementation Methods)

[0098] As explained above, according to an embodiment of the present invention, a terminal is provided, the terminal comprising: a control unit that determines the number of resource blocks allocated to a physical uplink control channel that satisfies a certain bandwidth, and maps the physical uplink control channel to physical resources; and a transmission unit that transmits the physical resources to a base station.

[0099] With the above structure, base station 10 and terminal 20 can set the bandwidth of PUCCH that meets the requirements related to peak EIRP by controlling the number of resource blocks or SCS. That is, in the wireless communication system, resource allocation adapted to the frequency band can be performed.

[0100] The control unit can determine the number of resource blocks based on the subcarrier spacing applied to the physical uplink control channel. Through this structure, the terminal 20 can set the bandwidth of the PUCCH that meets the requirements related to the peak EIRP by controlling the number of resource blocks according to the SCS.

[0101] The control unit can determine the number of resource blocks based on spatial multiplexing-related parameters applied to the physical uplink control channel. Through this structure, the terminal 20 can set the bandwidth of the PUCCH that meets the requirements related to peak EIRP by controlling the number of resource blocks according to MIMO parameters.

[0102] The control unit can repeatedly map the physical uplink control channel to the physical resource according to each resource block. Through this structure, the terminal 20 can set the bandwidth of PUCCH that meets the requirements related to peak EIRP by controlling the number of resource blocks, and improve the reliability of PUCCH transmission.

[0103] Furthermore, according to an embodiment of the present invention, a base station is provided, comprising: a control unit that determines the number of resource blocks allocated to a physical uplink control channel satisfying a certain bandwidth; a transmission unit that transmits information representing the number of resource blocks to a terminal; and a receiving unit that receives physical resources mapped with the physical uplink control channel from the terminal.

[0104] With the above structure, base station 10 and terminal 20 can set the bandwidth of PUCCH that meets the requirements related to peak EIRP by controlling the number of resource blocks or SCS. That is, in the wireless communication system, resource allocation adapted to the frequency band can be performed.

[0105] Furthermore, according to an embodiment of the present invention, a communication method is provided, wherein a terminal performs the following steps: a control step, determining the number of resource blocks allocated to a physical uplink control channel that satisfies a certain bandwidth, and mapping the physical uplink control channel to physical resources; and a transmission step, transmitting the physical resources to a base station.

[0106] With the above structure, base station 10 and terminal 20 can set the bandwidth of PUCCH that meets the requirements related to peak EIRP by controlling the number of resource blocks or SCS. That is, in the wireless communication system, resource allocation adapted to the frequency band can be performed.

[0107] (Supplement to the implementation method)

[0108] The embodiments of the present invention have been described above, but the disclosed invention is not limited to these embodiments. Those skilled in the art should understand various modifications, alterations, substitutions, and replacements. Specific numerical examples have been used to facilitate understanding of the invention, but unless otherwise specified, these values ​​are merely examples, and any appropriate values ​​may be used. The distinctions between items in the above description are not essential to the present 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 (as long as there is no contradiction). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical components. The operation of multiple functional units may be physically performed by one component, or the operation of one functional unit may be physically performed by multiple components. Regarding the processing procedures described in the embodiments, the order of processing may be interchanged unless there is a contradiction. For ease of explanation, base station 10 and terminal 20 have been described using functional block diagrams, but such a device may also be implemented in hardware, software, or a combination thereof. Software operating via a processor in base station 10 according to embodiments of the present invention and software operating via a processor in terminal 20 according to embodiments of the present invention may respectively 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 other suitable storage media.

[0109] Furthermore, the notification of information is not limited to the forms / implementations described in this disclosure, and other methods may also be used. For example, the notification of information may 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. Additionally, RRC signaling may also be referred to as an RRC message, for example, an RRC connection setup message, an RRC connection reconfiguration message, etc.

[0110] The various forms / implementations described in this disclosure can also be applied to at least one of LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA 2000, 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 using other suitable systems, and next-generation systems extended therefrom. Furthermore, multiple systems can be combined (e.g., a combination of at least one of LTE and LTE-A with 5G, etc.) for application.

[0111] The processing procedures, timing, and flow of the various forms / implementations described in this specification may be changed in order, provided there is no contradiction. For example, the elements of various steps are indicated using an illustrative order for the methods described in this disclosure, but are not limited to the specific order indicated.

[0112] In this specification, specific actions performed by base station 10 may sometimes be performed through its upper node, depending on the circumstances. In a network consisting of one or more network nodes including base station 10, it is obvious that various actions performed to communicate with terminal 20 can be performed by at least one of base station 10 and other network nodes besides base station 10 (e.g., considering MME or S-GW, but not limited to these). The above example illustrates the case where there is only 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).

[0113] The 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 or output via multiple network nodes.

[0114] Input or output information can be stored in a specific location (e.g., memory) or managed using a management table. Input or output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0115] The determination in this disclosure can be made by a value represented by 1 bit (0 or 1), by a Boolean value (Boolean: true or false), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value).

[0116] Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, should be broadly interpreted as commands, command sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0117] Furthermore, software, commands, and information can be sent and received via a transmission medium. For example, when 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.) to send software from a webpage, server, or other remote source, at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0118] The information, signals, etc., described in this disclosure can also be represented using any of a variety of different technologies. For example, the data, commands, instructions, information, signals, bits, symbols, chips, etc., that may be involved in the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination of these.

[0119] Furthermore, the terms used in this disclosure and 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 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.

[0120] The terms “system” and “network” as used in this disclosure may be used interchangeably.

[0121] Furthermore, the information, parameters, etc., described in this disclosure may be represented using absolute values, relative values ​​to predetermined values, or other corresponding information. For example, wireless resources may also be indicated by indexes.

[0122] The names used for the above parameters are not limiting in any way. Furthermore, the formulas, etc., using these parameters sometimes differ from those explicitly stated in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by appropriate names, and therefore the various names assigned to these various channels and information elements are not limiting in any way.

[0123] 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. Sometimes, macrocells, small cells, femtocells, and picocells are also used to refer to base stations.

[0124] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, its 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 cell tower (RRH: Remote Radio Head)). 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.

[0125] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" are used interchangeably.

[0126] For mobile stations, those skilled in the art sometimes also use the following terms: 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, handheld device, user agent, mobile client, client, or some other appropriate terms.

[0127] At least one of the base station and mobile station can also be referred to as a transmitting device, receiving device, communication device, etc. Furthermore, at least one of the base station and mobile station can be a device mounted on a mobile body, the mobile body itself, etc. This mobile body can be a vehicle (e.g., a car, an airplane, etc.), a mobile body moving in an unmanned manner (e.g., a drone, an autonomous vehicle, etc.), or a robot (humanized or unmanned). Additionally, at least one of the base station and mobile station may include devices that do not necessarily move during communication operations. For example, at least one of the base station and mobile station can be an IoT (Internet of Things) device such as a sensor.

[0128] Furthermore, the base station in this disclosure can also be replaced by a user terminal. For example, various forms / implementations of this disclosure can be applied to replace the communication between the base station and the user terminal with communication between multiple terminals 20 (e.g., also referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the terminal 20 can also be configured to have the functions of the base station 10 described above. In addition, terms such as "uplink" and "downlink" can 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.

[0129] Similarly, the user terminal in this disclosure can be replaced by a base station. In this case, the base station can also be configured to have the functions of the user terminal described above.

[0130] The terms "determining" and "determining" as used in this disclosure sometimes encompass a variety of actions. For example, "determining" and "determining" can include situations where actions such as judging, calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or other data structure), or ascertaining are considered as having been "judged" or "determined." Furthermore, "determining" and "determining" can include situations where actions such as receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, or accessing (e.g., accessing data in memory) are considered as having been "judged" or "determined." Additionally, "determining" and "determining" can include situations where actions such as resolving, selecting, choosing, establishing, or comparing are considered as having been "judged" or "determined." That is, "judgment" and "decision" can include matters in which any action has been "judged" or "decided". In addition, "judgment (decision)" can be replaced by "assuming", "expecting", or "considering".

[0131] The terms “connected,” “coupled,” or any variations thereof are intended to indicate any direct or indirect connection or combination between two or more elements, including situations where there is one or more intermediate elements between the two mutually “connected” or “coupled” elements. The combination or connection between elements can be physical, logical, or a combination of these. For example, “access” can be used instead of “connected.” In the context of this disclosure, for two elements, it can be considered that they are mutually “connected” or “coupled” by using at least one of one or more wires, cables, and printed electrical connections, and as some non-limiting and non-inclusive examples, by using electromagnetic energy, such as electromagnetic energy having wavelengths in the wireless frequency domain, microwave region, and light (including both visible and invisible regions).

[0132] The reference signal can be simply referred to as RS (Reference Signal), or, depending on the standard applied, as a pilot.

[0133] As used in this disclosure, the word "based on" does not mean "based on only" unless otherwise expressly stated. In other words, the word "based on" means both "based on only" and "based on at least" both.

[0134] Any reference to elements using the designations "first," "second," etc., as used in this disclosure does not necessarily limit the number and order of these elements. These designations are used in this disclosure as a convenient way to distinguish between two or more elements. Therefore, reference to the first or second element does not imply that only two elements can be taken here, or that in any form the first element must precede the second element.

[0135] The term "unit" in the above-mentioned device structures can be replaced with "section", "circuit", "equipment", etc.

[0136] When the terms "include," "including," and variations thereof are used in this disclosure, these terms imply inclusion, just as the term "comprising" implies inclusion. Furthermore, the term "or" as used in this disclosure implies non-exclusivity.

[0137] A wireless frame can consist of one or more frames in the time domain. These frames can also be referred to as subframes in the time domain. A subframe can also consist of one or more time slots in the time domain. A subframe can be a fixed duration (e.g., 1 ms) independent of the parameter set (numerology).

[0138] A parameter set can also be communication parameters applied to at least one side of the transmission and reception of a signal or channel. For example, a parameter set can 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 transceiver in the frequency domain, and specific windowing processing performed by the transceiver in the time domain.

[0139] In the time domain, a time slot can 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 be a time unit based on a set of parameters.

[0140] A time slot can also contain multiple mini-time slots. Each mini-time slot can consist of one or more symbols in the time domain. Additionally, 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. PDSCH (or PUSCH) transmitted in a time unit larger than a mini-time slot can also be called PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using mini-time slots can also be called PDSCH (or PUSCH) mapping type B.

[0141] 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 alternative names.

[0142] For example, one subframe can also be called a Transmission Time Interval (TTI), multiple consecutive subframes can also be called a TTI, and one time slot or one mini-time slot can also be called a TTI. That is, at least one of the subframe and TTI can be a subframe in the existing LTE (1ms), a period shorter than 1ms (e.g., symbols 1-13), or a period longer than 1ms. In addition, the unit representing TTI can also be not a subframe, but a time slot, mini-time slot, etc.

[0143] 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 units of TTI for each terminal 20. However, the definition of TTI is not limited to this.

[0144] TTI can be a unit of time for transmitting channel-coded data packets (transmission blocks), code blocks, codewords, etc., or it can be a processing unit for scheduling, link adaptation, etc. Furthermore, when a TTI is assigned, the actual time interval mapped to the transmission block, code block, codeword, etc. (e.g., the number of symbols) can be shorter than that TTI.

[0145] Furthermore, when 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 constitute the minimum time unit of scheduling. Additionally, the number of time slots (mini-time slots) constituting the minimum time unit of scheduling can also be controlled.

[0146] A TTI with a duration of 1ms can be referred to as a normal TTI (TTI in LTE Rel.8-12), a typical TTI, a long TTI, a normal subframe, a typical subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI can be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a mini time slot, a sub-time slot, a time slot, etc.

[0147] In addition, long TTIs (e.g., normal TTIs, subframes, etc.) can be replaced with TTIs with a duration of more than 1 ms, and short TTIs (e.g., shortened TTIs, etc.) can be replaced with TTIs with a duration of less than long TTIs but more than 1 ms.

[0148] A resource block (RB) is a unit of resource allocation in the time and frequency domains. In the frequency domain, it can also contain one or more consecutive subcarriers. The number of subcarriers contained in an RB can be the same and is independent of the parameter set; for example, it can be 12. The number of subcarriers contained in an RB can be determined based on the parameter set.

[0149] Furthermore, the time domain of an RB can contain one or more symbols, or it can be a time slot, a mini-time slot, a subframe, or a TTI in length. A TTI, a subframe, etc., can also be composed of one or more resource blocks.

[0150] 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.

[0151] Furthermore, a resource block can also consist of one or more resource elements (REs). For example, 1 RE can also be a radio resource area consisting of 1 subcarrier and 1 symbol.

[0152] The Bandwidth Part (BWP) (also known as partial bandwidth, etc.) in a carrier can represent a subset of contiguous common resource blocks (RBs) used for a parameter set. Here, common RBs can also be determined by indexing RBs based on a common reference point of that carrier. PRBs can also be defined by a BWP and numbered within that BWP.

[0153] A BWP can also include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). For a UE, one or more BWPs can also be set within one carrier.

[0154] At least one of the configured BWPs can be active, and the UE may not intend to transmit or receive predetermined signals / channels outside of the active BWP. In addition, "cell", "carrier", etc. in this disclosure can be replaced with "BWP".

[0155] The structures of radio frames, subframes, time slots, mini-time slots, and symbols described above 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, cyclic prefix (CP) length, etc., can be varied.

[0156] In this disclosure, for example, in cases where articles are added through translation, such as in English (e.g., a, an, and the), this disclosure also includes cases where the noun following these articles is in a plural form.

[0157] In this disclosure, the phrase "A and B are different" can also mean "A and B are different from each other." Furthermore, this phrase can also mean "A and B are each different from C." Terms such as "separate" and "combined" can also be interpreted as "different."

[0158] The various forms / implementations described in this disclosure can be used individually or in combination, and their use can be switched depending on the execution. Furthermore, the notification of predetermined information is not limited to explicit notification (e.g., a "Yes X" notification), but can also be implicit notification (e.g., not notifying the predetermined information).

[0159] Additionally, the PUCCH in this disclosure is an example of a physical uplink control channel. The TCI state ID or PUCCH-SpatialRelationInfo is an example of a parameter related to spatial multiplexing.

[0160] The present disclosure has been described in detail above, but 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 as modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the present disclosure is for illustrative purposes only and is not intended to be limiting.

[0161] Label Explanation:

[0162] 10 base stations

[0163] 110 Dispatch Department

[0164] 120 Receiving Department

[0165] 130 Setting Department

[0166] 140 Control Department

[0167] 20 terminals

[0168] 210 Sending Department

[0169] 220 Receiving Department

[0170] 230 Setting Department

[0171] 240 Control Department

[0172] 1001 processor

[0173] 1002 Storage device

[0174] 1003 Auxiliary storage device

[0175] 1004 Communication device

[0176] 1005 Input Device

[0177] 1006 Output Device

Claims

1. A terminal, wherein, The terminal has: The transmitting unit sends information to the base station indicating whether it supports the allocation of multiple resource blocks to the physical uplink control channel; The receiving unit receives from the base station information indicating the number of resource blocks allocated to the physical uplink control channel; and The control unit, as the number of resource blocks allocated to the physical uplink control channel increases, uses a longer sequence to map the physical uplink control channel to physical resources. The transmitting unit uses the physical resources to send the physical uplink control channel to the base station.

2. A base station, wherein, The base station has: The receiving unit receives from the terminal information indicating whether the allocation of multiple resource blocks to the physical uplink control channel is supported; and The transmitting unit sends information to the terminal indicating the number of resource blocks allocated to the physical uplink control channel. The receiving unit uses a longer sequence of physical resources mapped to the physical uplink control channel as the number of resource blocks allocated to the physical uplink control channel increases, and receives the physical uplink control channel from the terminal.

3. A communication method, wherein, The terminal will execute the following steps: Send information to the base station indicating whether it supports the allocation of multiple resource blocks to the physical uplink control channel; Receive information from the base station indicating the number of resource blocks allocated to the physical uplink control channel; As the number of resource blocks allocated to the physical uplink control channel increases, a longer sequence is used to map the physical uplink control channel to physical resources; and The physical resources are used to send the physical uplink control channel to the base station.

4. A communication system comprising a terminal and a base station, wherein, The terminal has: The transmitting unit sends information to the base station indicating whether it supports the allocation of multiple resource blocks to the physical uplink control channel; The receiving unit receives from the base station information indicating the number of resource blocks allocated to the physical uplink control channel; and The control unit, as the number of resource blocks allocated to the physical uplink control channel increases, uses a longer sequence to map the physical uplink control channel to physical resources. The transmitting unit uses the physical resources to send the physical uplink control channel to the base station. The base station has: The receiving unit receives from the terminal information indicating whether the allocation of multiple resource blocks to the physical uplink control channel is supported; and The transmitting unit sends information to the terminal indicating the number of resource blocks allocated to the physical uplink control channel. The receiving unit uses a longer sequence of physical resources mapped to the physical uplink control channel as the number of resource blocks allocated to the physical uplink control channel increases, and receives the physical uplink control channel from the terminal.

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