Terminal and communication method

Abstract

This terminal is provided with a control unit that, in a time unit in which a plurality of sub-bands constituting a time division duplex band can be used, sets a first resource to be muted, and sets a second resource for mapping uplink control information, and a transmission unit that, on the basis of the setting, transmits the uplink control information in the time unit, wherein the control unit sets the first resource and the second resource such that at least a part of the second resource is different from the first resource.

Description

Terminal and communication method

[0001] The present disclosure relates to a terminal and a communication method.

[0002] The 3rd Generation Partnership Project (3GPP (registered trademark)) has established specifications for the 5th generation mobile communication system (also known as 5G, New Radio (NR) or Next Generation 10 (NG)), and is also developing specifications for the next generation of mobile communication systems, known as Beyond 5G, 5G Evolution or 6G.

[0003] Release 18 discusses a duplexing scheme that enables simultaneous use of the downlink (DL) and uplink (UL) by utilizing multiple subbands that make up a time division duplexing (TDD) band. This duplexing scheme is called subband non-overlapping full duplex (SBFD). Symbols to which SBFD is applied may also be called SBFD symbols. In addition, in an SBFD symbol, a subband used for DL ​​may also be called a DL subband, and a subband used for UL may also be called a UL subband.

[0004] The introduction of SBFD and dynamic / flexible TDD has enabled simultaneous DL / UL transmission from a base station (hereinafter referred to as gNodeB (gNB)) and a terminal (hereinafter referred to as user equipment (UE)). However, this has also introduced a new type of interference, cross-link interference (CLI). For this reason, UL resource (PUSCH resource) muting has been considered as a CLI handling scheme.

[0005] “New WID: Evolution of NR duplex operation: Sub-band full duplex (SBFD)”, RP-234035, 3GPP TSG RAN Meeting #102, 3GPP, December 11-15, 2023TS38.212 V18.3.0 (2024-06) Section 6.2.7

[0006] When UL resource muting is performed, there is a risk that UCI on PUSCH may be mapped to the muted resource.

[0007] However, a specific scheme for mapping UCI when UL resource muting is performed has not yet been fully considered at present.

[0008] One aspect of the present disclosure provides a terminal and a communication method that can appropriately map UCI on a PUSCH when UL resource muting is performed in SBFD.

[0009] A terminal according to one aspect of the present disclosure includes a control unit that sets a first resource to be muted and a second resource to which uplink control information is mapped in a time unit in which multiple subbands constituting a time division duplex band are available, and a transmission unit that transmits the uplink control information in the time unit based on the settings, and the control unit sets the first resource and the second resource so that at least a portion of the second resource is different from the first resource.

[0010] 1 is a diagram illustrating an overall schematic configuration of a wireless communication system. FIG. 2 is a diagram illustrating a frequency range used in the wireless communication system. FIG. 3 is a diagram illustrating an example of the configuration of a radio frame, subframe, slot, and symbol used in the wireless communication system. FIG. 4 is a diagram illustrating an example of TDD configuration specified up to Release 16. FIG. 5 is a diagram illustrating an example of an SBFD configuration. FIG. 6 is a diagram illustrating an example of SBFD operation. FIG. 7 is a diagram illustrating an example of existing TDD configuration. FIG. 8 is a diagram illustrating an example of TDD including SBFD configuration. FIG. 9 is a diagram illustrating a pure time unit and an SBFD time unit. FIG. 10 is a diagram illustrating a pure time unit and an SBFD time unit. FIG. 11 is a diagram illustrating a pure time unit and an SBFD time unit. FIG. 12 is a diagram illustrating a procedure for mapping up to two HARQ-ACK bits. FIG. 13 is a diagram illustrating a procedure for mapping up to two HARQ-ACK bits. FIG. 14 is a diagram illustrating a procedure for mapping up to two HARQ-ACK bits. FIG. 1 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits. FIG. 2 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits. FIG. 3 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits. FIG. 4 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits. FIG. 5 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits. FIG. 6 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits in proposal 1. FIG. 7 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits in proposal 1. FIG. 8 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits in proposal 1. FIG. 9 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits in proposal 1. FIG. 10 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits in proposal 2. FIG. 11 is a diagram illustrating a procedure for mapping more than two HARQ-ACK bits in proposal 2.FIG. 1 is a diagram illustrating a mapping procedure for more than two HARQ-ACK bits in proposal 2. FIG. 2 is a diagram illustrating a mapping procedure for more than two HARQ-ACK bits in proposal 2. FIG. 3 is a block diagram illustrating an example of the configuration of a base station. FIG. 4 is a block diagram illustrating an example of the configuration of a terminal. FIG. 5 is a diagram illustrating an example of the hardware configuration of a base station and a terminal. FIG. 6 is a diagram illustrating an example of the configuration of a vehicle.

[0011] Hereinafter, embodiments will be described with reference to the drawings. Note that the same or similar reference numerals are used to designate the same functions or configurations, and descriptions thereof will be omitted as appropriate.

[0012] (1) Configuration of Wireless Communication System The wireless communication system 10 shown in Fig. 1 is a wireless communication system conforming to a system called 5G. Alternatively, the wireless communication system 10 may be a wireless communication system conforming to a system called Beyond 5G, 5G Evolution, or 6G.

[0013] The wireless communication system 10 can support Massive Multiple-Input Multiple-Output (Massive MIMO), which generates more directional beams by controlling wireless signals transmitted from multiple antenna elements, Carrier Aggregation (CA), which uses multiple component carriers (CCs) as a bundle, and Dual Connectivity (DC), which communicates with two base stations simultaneously.

[0014] As shown in FIG. 1, the wireless communication system 10 includes a base station 100 (hereinafter also referred to as a gNodeB (gNB) 100) constituting a Next Generation-Radio Access Network (NG-RAN) 20, and a terminal 200 (hereinafter also referred to as a user equipment (UE) 200) that performs wireless communication with the gNB 100. The NG-RAN 20 is connected to a core network (CN) (not shown). The CN is composed of multiple network functions (NFs). The NFs are, for example, an Access and Mobility Management Function (AMF) and a Network Data Analytics Function (NWDAF). The AMF performs, for example, registration of the UE 200. The NWDAF performs, for example, optimization of the CN. Note that the specific configuration of the wireless communication system 10, for example, the number of gNBs 100 and UEs 200, is not limited to the example shown in FIG. 1. The NG-RAN 20 and the CN may be simply referred to as a "network."

[0015] The gNB100 may be a base station having a Centralized-Radio Access Network (C-RAN) configuration, which includes a distributed unit (DU) having a function for connecting to the UE200 and a central unit (CU) having a function for connecting to the network. In this case, the gNB100 may be read as a DU, a CU, or both a DU and a CU. When the gNB100 is read as a DU, it may be referred to as a gNB-DU. When the gNB100 is read as a CU, it may be referred to as a gNB-CU. When the gNB100 is read as a DU and a CU, the DU portion may be referred to as a gNB-DU, and the CU portion may be referred to as a gNB-CU.

[0016] The wireless communication system 10 may also support multiple frequency ranges (FR). That is, as shown in Fig. 2, the wireless communication system 10 may support the following FRs: FR1: 410 MHz to 7.125 GHz; FR2-1: 24.25 GHz to 52.6 GHz; and FR2-2: Over 52.6 GHz to 71 GHz.

[0017] In FR1, a subcarrier spacing (SCS) of 15, 30, or 60 kHz and a bandwidth (BW) of 5 to 100 MHz may be used, while in FR2-1, an SCS of 60 or 120 kHz (or 240 kHz) and a BW of 50 to 400 MHz may be used.

[0018] Note that SCS may be interpreted as numerology, which is defined in 3GPP TS 38.300 and corresponds to one subcarrier spacing in the frequency domain.

[0019] In FR2-2, to avoid an increase in phase noise, Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) or Discrete Fourier Transform-Spread-Orthogonal Frequency Division Multiplexing (DFT-S-OFDM) with a larger SCS may be applied.

[0020] 3 is a diagram showing an example of the configuration of a radio frame (system frame), subframe, and slot used in the wireless communication system 10. As shown in FIG. 3, one slot is composed of 14 symbols, and the larger (wider) the SCS, the shorter the symbol period (and slot period). However, the SCS is not limited to the interval (frequency) shown in FIG. 3. For example, 480 kHz, 960 kHz, etc. may be used as the SCS.

[0021] Furthermore, the number of symbols constituting one slot does not necessarily have to be 14 (for example, it may be 28 or 56 symbols, etc.) Furthermore, the number of slots per subframe may differ depending on the SCS.

[0022] 3 may be called a time domain, a symbol period, a symbol time, etc. The frequency direction may be called a frequency domain, a resource block, a subcarrier, a bandwidth part (BWP), etc.

[0023] The wireless communication system 10 may support coverage enhancement (CE) that expands the coverage of a cell (or a physical channel) formed by the gNB 100. In coverage enhancement, a mechanism for increasing the success rate of reception of various physical channels, such as repeated transmission (repetition) of a PRACH (physical random access channel), may be provided.

[0024] For example, UE200 receives information related to the random access procedure from gNB100 as a downlink (DL) signal (e.g., SIB1 (System Information Block Type 1) etc.).

[0025] Further, for example, UE 200 transmits PRACH as an UL signal to gNB 100 using a RACH occasion (RO), which is a resource for transmitting a random access preamble. For example, UE 200 repeatedly transmits PRACH as an UL signal to gNB 100.

[0026] The UL signal may include, for example, a UL data signal and control information. For example, the UL signal may include information related to the processing capability of the UE 200 (e.g., UE capability). The UL signal may also include a reference signal.

[0027] Channels used for transmitting UL signals include, for example, data channels and control channels. For example, the data channel may include a physical uplink shared channel (PUSCH), and the control channel may include a physical uplink control channel (PUCCH). For example, the UE 200 transmits control information using the PUCCH and transmits UL data signals using the PUSCH. Note that the PUSCH is an example of an uplink shared channel, and the PUCCH is an example of an uplink control channel. The shared channel may also be called a data channel.

[0028] The reference signal included in the UL signal may include, for example, at least one of a DMRS (Demodulation Reference Signal), a PTRS (Phase Tracking Reference Signal), a CSI-RS (Channel State Information - Reference Signal), an SRS (Sounding Reference Signal), and a PRS (Positioning Reference Signal) for position information. For example, reference signals such as the DMRS and PTRS are used to demodulate the UL data signal and are transmitted using the PUSCH.

[0029] Meanwhile, in response to the operation of UE200, gNB100 transmits information related to the RACH procedure to UE200 as a DL signal (e.g., SIB1, etc.).

[0030] Also, for example, gNB100 receives PRACH as an UL signal from UE200. For example, gNB100 repeatedly receives PRACH from UE200 as an UL signal.

[0031] Channels used for transmitting DL signals include, for example, data channels and control channels. For example, the data channel may include a physical downlink shared channel (PDSCH), and the control channel may include a physical downlink control channel (PDCCH). For example, the gNB 100 transmits control information to the UE 200 using the PDCCH, and transmits DL data signals using the PDSCH. Note that the PDSCH is an example of a downlink shared channel, and the PDCCH is an example of a downlink control channel. Note that the PDCCH may be interpreted as downlink control information (DCI), control information, etc. transmitted in the PDCCH.

[0032] The reference signal included in the DL signal may include, for example, at least one of a DMRS, a PTRS, a CSI-RS, an SRSRS, and a PRS for location information. For example, the reference signal such as a DMRS or a PTRS is used for demodulating a DL data signal and is transmitted using a PDSCH.

[0033] Support for random access (RA) in SBFD is being considered for Release 19. The following describes SBFD and random access.

[0034] (SBFD Operation) Considering the time ratio of transmission and reception (e.g., DL:UL = 4:1) using Time Division Duplex (TDD) up to Release 16, there may be cases where the number of transmission opportunities for UL signals / channels is fewer than the number of reception opportunities for DL ​​signals / channels. In such cases, UE 200 cannot transmit UL signals / channels frequently, which raises concerns about transmission delays of important UL signals / channels. In addition, since there are fewer UL transmission opportunities compared to DL reception opportunities, there is also concern about signal / channel congestion during UL transmission opportunities. Furthermore, in TDD, the time resources available for transmitting UL signals / channels are limited, which limits the application of UL coverage extension techniques, for example, through repetition.

[0035] In future wireless communication systems (for example, Release 18 and later), it is being considered to introduce a time-frequency division duplexing method that combines TDD and frequency division duplexing (FDD) for UL and DL.

[0036] Examples of the time-frequency division duplexing method include cross-division duplex (XDD) and subband-non-overlapping full duplex (SBFD). XDD or SBFD may refer to a duplexing method in which DL and UL are frequency-division multiplexed within one component carrier (CC) of a TDD band (i.e., DL and UL can be used simultaneously).

[0037] Fig. 4A is a diagram showing an example of TDD configuration defined up to Release 16. In the example shown in Fig. 4A, TDD slots or symbols are configured for a UE in a bandwidth such as one component carrier (CC) (which may also be called a cell or a serving cell) or bandwidth portion (BWP).

[0038] In the example shown in Fig. 4A, the time ratio of DL slots to UL slots is 4: 1. In such a conventional TDD slot or symbol setting, UL time resources cannot be sufficiently secured, which may result in UL transmission delays and degradation of coverage performance.

[0039] 4B is a diagram showing an example of the configuration of SBFD. In the example shown in FIG. 4B, within one component carrier (CC), resources used for DL ​​reception and resources used for UL transmission overlap in time. With this resource configuration, more UL resources can be secured, thereby improving resource utilization efficiency.

[0040] For example, as shown in the example of Figure 4B, both ends of the frequency domain may be set as DL resources, and these DL resources may sandwich UL resources. This may prevent or mitigate cross link interference (CLI) with neighboring carriers. Also, a guard region may be set at the boundary between the DL resource and the UL resource.

[0041] Considering the complexity of processing self-interference, it may be considered that only the base station 100 uses the DL resource and the UL resource simultaneously. That is, in radio resources where the DL and UL overlap in time, one UE 200 may use the DL resource and another UE 200 may use the UL resource.

[0042] Fig. 5 is a diagram showing an example of SBFD operation. In the example shown in Fig. 5, part of the DL resources of the TDD band is configured as UL resources, and the DL and UL are configured to partially overlap in the time domain.

[0043] In the example shown in FIG. 5, during the DL-only period, each of the multiple UEs 200 (UE #1 and UE #2 in FIG. 5) receives the DL channel / signal.

[0044] Furthermore, during a period in which DL and UL overlap in time, one UE 200 (UE #1 in the example of FIG. 5) receives a DL channel / signal, and another UE 200 (UE #2 in the example of FIG. 5) transmits a UL channel / signal. During this period, the base station 100 performs simultaneous transmission and reception of DL and UL.

[0045] Furthermore, during the UL-only period, each of the multiple UEs 200 (UE #1 and UE #2 in FIG. 5) transmits a UL channel / signal.

[0046] In the existing NR (for example, as defined by Release 15 / 16 / 17), the DL frequency resource and the UL frequency resource in the UE carrier are configured as the DL BWP and the UL BWP, respectively. In order to switch the DL / UL frequency resource to another DL / UL frequency resource, multiple BWP configurations and a BWP adaptation mechanism are required.

[0047] 6A is a diagram showing an example of an existing TDD configuration. In FIG. 6A, slots / symbols marked with "D" are DL slots / symbols, slots / symbols marked with "U" are UL slots / symbols, and slots / symbols marked with "F" are flexible (hereinafter also referred to as FL) slots / symbols. Note that similar notations may be used in the following figures.

[0048] In the existing NR, as shown in FIG. 6A, the time resources (time units such as symbols, slots, etc.) in the TDD carrier for UE 200 are configured as at least one of DL, UL, and flexible (FL) in the TDD configuration.

[0049] 6B is a diagram showing an example of an existing TDD configuration. In FIG. 6B, slots / symbols or subbands marked with "D" are DL slots / symbols or DL ​​subbands, and slots / symbols or subbands marked with "U" are UL slots / symbols or UL subbands. Note that similar notations may be used in the following figures.

[0050] As shown in FIG. 6B , the SBFD symbol may be a symbol that is signaled or configured as UL (or DL) or for UL transmission (or DL ​​reception) on some frequency resources (subbands), and signaled or configured as DL (or UL) or for DL ​​reception (or UL transmission) on other frequency resources (subbands). Alternatively, the SBFD symbol may be a symbol that is signaled or configured as UL (or DL) or for UL transmission (or DL ​​reception) on a portion of the frequency resources. Alternatively, the SBFD symbol may be a symbol that is signaled or configured as DL (or UL) or for DL ​​reception (or UL transmission) on a portion of the frequency resources.

[0051] Here, the time unit may be at the symbol level, slot / subslot level, or a group of symbols / slots / subslots, i.e., an SBFD time unit may be an SBFD symbol, a slot / subslot containing or overlapping an SBFD symbol, or a group of symbols / slots / subslots containing or overlapping an SBFD symbol.

[0052] A pure time unit may be a non-SBFD symbol (i.e., a symbol that is not an SBFD symbol, also referred to as a non-SBFD symbol), a slot / subslot that does not contain or overlap an SBFD symbol, or a group of symbols / slots / subslots that do not contain or overlap an SBFD symbol, and may also be referred to as a non-SBFD time unit. For example, a pure time unit may be referred to as a time unit consisting only of DL on a frequency resource as shown in Figure 7A, or as a time unit consisting only of UL on a frequency resource as shown in Figure 7B.

[0053] Furthermore, for an SBFD time unit, DL resources and UL resources may have various allocation patterns in the frequency domain. For example, an SBFD time unit of frequency domain pattern #1 may have an allocation pattern as shown in FIG. 7C . An SBFD time unit of frequency domain pattern #2 may have an allocation pattern as shown in FIG. 7D . An SBFD time unit of frequency domain pattern #3 may have an allocation pattern as shown in FIG. 7E . These allocation patterns are merely exemplary, and other allocation patterns may be used. The frequency domain pattern of an SBFD time unit may refer to a resource repetition pattern in the frequency domain for the SBFD time unit.

[0054] As described above, SBFD may be applied to each slot / symbol. Note that each slot / symbol may be set to DL, UL, or Flexible (FL) that can be used as DL or UL, and then SBFD may be applied.

[0055] SBFD is a type of (full-duplex) duplexing scheme based on time division duplexing (TDD), enabling simultaneous use of multiple subbands constituting the TDD band. SBFD can be said to be a duplexing scheme in which multiple subbands are defined within the TDD band, a duplexing scheme in which UL and DL are allocated non-overlapping in the frequency direction in TDD time units, or full-duplexing of subbands.

[0056] A symbol to which SBFD is applied is also referred to as an SBFD symbol. "SBFD is applied" may be interpreted as SBFD being applied to at least a part of scheduling. That is, a "symbol to which SBFD is applied" may be interpreted as a symbol to which SBFD is applied (SBFD symbol) in scheduling to which SBFD is applied. Furthermore, a "time unit to which non-SBFD is applied" may be interpreted as a symbol to which SBFD is not applied (non-SBFD symbol) in scheduling to which SBFD is applied.

[0057] The following describes terms related to SBFD. SBFD DL symbol: A symbol instructed for DL ​​by tdd-UL-DL-ConfigurationCommon and / or tdd-UL-DL-ConfigurationDedicated, and a symbol for which an SBFD subband is set. SBFD FL symbol: A symbol instructed for FL by tdd-UL-DL-ConfigurationCommon and / or tdd-UL-DL-ConfigurationDedicated, and a symbol for which an SBFD subband is set. SBFD SSB symbol: A symbol set for SSB reception, and a symbol for which an SBFD subband is set. Non-SBFD symbol: A symbol for which an SBFD subband is not set, and / or a symbol for which SBFD operation is not performed on the gNB side.

[0058] <CLI Handling Enhancements> In the RAN#104 meeting, CLI handling enhancements were updated as follows: - Specific enhancements for CLI handling [RAN1, RAN2, RAN3, RAN4] - Muting of UL resources for PUSCH, including [RAN1, RAN2, RAN4] - Indication / decision of muting of UL resources for PUSCH based on quasi-static configuration, assuming comb-2 for both DFT-S-OFDM and CP-OFDM for each assigned PRB and assuming a maximum of 2 symbols in the time domain - PUSCH resource mapping, i.e., rate matching around muted REs - Determination of UCI resources in symbols with muted REs - Existing CSI (Channel State Information) including [RAN1, RAN2, RAN4] L1-based UE-to-UE CLI measurement and reporting based on the L1-based CSI Information framework; Setting / determination of "type D" QCL assumptions for CLI measurement resources; At least infrequent reporting; New reporting quantities, e.g., L1-SRS-RSRP, L1-CLI-RSSI and / or measurement resource index; UCI bit generation; Priority rules for multiple CSI reports; CLI measurement accuracy requirements. (Note) No dedicated optimization for dynamic / flexible TDD is provided.

[0059] <Procedure for Multiplexing UCI on PUSCH> Non-Patent Document 2 specifies, as a procedure for multiplexing UCI on PUSCH, (A) a procedure for mapping up to two HARQ-ACK bits on PUSCH, and (B) a procedure for mapping more than two HARQ-ACK bits on PUSCH. Hereinafter, (A) the procedure for mapping up to two HARQ-ACK bits will be described using FIG. 8, and (B) the procedure for mapping more than two HARQ-ACK bits will be described using FIG. 9. In addition, in FIG. 8 and FIG. 9, the horizontal axis indicates symbol (time), and the vertical axis indicates subcarrier (frequency). Also, in the example of FIG. 8, the spacing d between subcarriers to which UCI is mapped in each symbol (hereinafter referred to as "subcarrier spacing") is assumed to be d = 1 for symbol #3 and d = 3 for symbol #4. Also, in the example of FIG. 9, the subcarrier spacing d is assumed to be d = 1 for symbol #3 and d = 2 for symbol #4.

[0060] (A) Mapping Procedure for Up to Two HARQ-ACK Bits 1. The HARQ-ACK bit is mapped as a reserved HARQ-ACK bit after the DM-RS symbol (UCI is distributed in the frequency domain). (See Figure 8(A)) 2. The CSI Part 1 bit is mapped. At this time, the CSI Part 1 bit is not mapped to the resource to which the reserved HARQ-ACK bit is mapped. (See Figure 8(B)) 3. The CSI Part 2 bit is mapped. At this time, the CSI Part 2 bit is multiplexed with the reserved HARQ-ACK bit and mapped to the resource to which the reserved HARQ-ACK bit is mapped. (See Figure 8(C)) 4. The UL-SCH bit is mapped. (See Figure 8(D)) 5. In the reserved HARQ-ACK bit, the CSI Part 2 bit is punctured and the HARQ-ACK bit is mapped. (See Figure 8(E))

[0061] (B) Mapping procedure for more than two HARQ-ACK bits 1. The HARQ-ACK bit is mapped after the DM-RS symbol. (See FIG. 9(A)) 2. The CSI part 1 bit is mapped. At this time, the CSI part 1 bit is not mapped to the resource to which the HARQ-ACK bit is mapped. (See FIG. 9(B)) 3. The CSI part 2 bit is mapped. At this time, the CSI part 2 bit is not mapped to the resource to which the HARQ-ACK bit is mapped. (See FIG. 9(C)) 4. The UL-SCH bit is mapped. (See FIG. 9(D))

[0062] <Consideration> In an SBFD symbol / slot, UL transmission / reception and DL transmission / reception are performed simultaneously, so there is a risk that the UL signal will interfere with the DL signal when received by the base station due to interference covariance matrix measurement between base stations.

[0063] Therefore, in order to perform accurate interference covariance matrix measurement, muting of UL resources (PUSCH resources) is being considered. Hereinafter, the UL resources to be muted are referred to as "muting resources (first resources)."

[0064] In addition, the introduction of a muting pattern in the time / frequency domain is being considered. When UCI is mapped onto the PUSCH, the resource (symbol) onto which the UCI is mapped (hereinafter referred to as the "UCI resource (second resource)") may overlap with the muting resource.

[0065] However, at present, there has been no sufficient study on a specific scheme for UCI mapping, i.e., UCI resource configuration, when UL resource muting is performed.

[0066] If the terminal maps all UCI to the muting resources, the terminal will not be able to transmit the UCI to the base station, resulting in a deterioration in communication accuracy.

[0067] Therefore, this application proposes control of muting resource configuration and UCI resource configuration by a terminal when UL resource muting is performed in an SBFD symbol / slot.

[0068] The proposals of this application include the following Proposal 1 to Proposal 4. Proposal 1: The muting pattern of the time / frequency resource is mapped before UCI mapping, and UCI / UL-SCH is not mapped to the muting resource. Proposal 2: The muting resource is mapped (or not mapped) before UCI mapping, and UCI / UL-SCH can be mapped to the muting resource. Furthermore, the muting resource to which UCI / UL-SCH can be mapped is punctured. Proposal 3: When UCI is mapped to a muting resource on PUSCH, muting is canceled. Proposal 4: The UCI resource is shifted in the time domain so that UCI is not mapped to the muting resource.

[0069] The items described in the following proposals may be combined as appropriate as long as no contradictions arise.

[0070] In this application, the notation " / " may mean "and / or" unless otherwise specified.

[0071] <Proposal 1> In Proposal 1, the terminal maps the muting pattern of the time / frequency resources first or before UCI mapping, and then controls the mapping of UCI / UL-SCH bits to avoid muting resources for any type of UCI / UL-SCH.

[0072] In this case, the terminal maps the UCI / UL-SCH bits to available resources that are not muted (hereinafter referred to as "non-muting resources").

[0073] The number of subcarriers onto which UCI / UL-SCH can be mapped is derived taking into account muting resources.

[0074] For example, if subcarrier #j (j-th subcarrier) is muted, This becomes:

[0075] If the UCI bits can be mapped to all subcarriers in a symbol (e.g., ), the terminal may set the subcarrier spacing d using one of the following Alt (Alternation):

[0076] (Alt1-1) The terminal may not consider muting resources in mapping UCI bits and may set the subcarrier spacing d to "1".

[0077] (Alt1-2) The terminal may set the subcarrier spacing d to "2" in consideration of the comb-2 pattern of the muting resource.

[0078] (Alt1-3) The terminal may set the subcarrier spacing d by taking into account the muting resource in mapping the UCI bits.

[0079] If the UCI bits cannot be mapped to some subcarriers within a symbol (e.g., ), the terminal may set the subcarrier spacing d using one of the following Alts:

[0080] (Alt2-1) The terminal may calculate the subcarrier spacing d according to the following Equation 1 without considering the muting resource in mapping the UCI bits.

[0081] (Alt2-2) The terminal may take into account the muting resource in mapping the UCI bits and calculate the subcarrier spacing d using the following Equation 2.

[0082] The symbols in the above formula are based on those described in Non-Patent Document 2.

[0083] In Proposal 1, the conventional UCI resource mapping rules can be applied to available resources (non-muting resources), and puncturing and rate matching can also be applied.

[0084] An example of a procedure for mapping up to two HARQ-ACK bits in Proposal 1 will be described below with reference to Figure 10. In Figure 10, the horizontal axis represents symbols (time) and the vertical axis represents subcarriers (frequency). In the example of Figure 10, the muting pattern is assumed to be a pattern in which subcarriers #1, #3, #5, #7, #9, and #11 are muted in symbols #0, #3, and #4. Therefore, the number of subcarriers to which UCI bits can be mapped in symbols #3 and #4 is six (subcarriers #0, #2, #4, #6, #8, and #10). In the example of Figure 10, the subcarrier spacing d is assumed to be d = 1 in symbol #3 and d = 3 in symbol #4. In Figure 10, the terminal sets the subcarrier spacing d taking into account (excluding) the muting resource when mapping the UCI bits.

[0085] - Mapping procedure for up to 2 HARQ-ACK bits in Proposal 1 0. Muting pattern is mapped. (See Figure 10(A)) 1. HARQ-ACK bits are mapped as reserved HARQ-ACK bits after the DM-RS symbol. At this time, the HARQ-ACK bits are not mapped to muting resources (muted subcarriers). (See Figure 10(B)) 2. CSI Part 1 bits are mapped. At this time, CSI Part 1 bits are not mapped to resources to which reserved HARQ-ACK bits are mapped or muting resources. (See Figure 10(C)) 3. CSI Part 2 bits and UL-SCH bits are mapped. At this time, CSI Part 2 bits are multiplexed with the reserved HARQ-ACK bits and mapped to resources to which reserved HARQ-ACK bits are mapped. In addition, CSI Part 2 bits are not mapped to muting resources. (See Figure 10(D)) 4. In the reserved HARQ-ACK bit, the CSI part 2 bit is punctured and the HARQ-ACK bit is mapped (see FIG. 10(E)).

[0086] (Effects of Proposal 1) According to Proposal 1, the muting pattern of the time / frequency resource is mapped before UCI mapping, and the UCI / UL-SCH is not mapped to the muting resource. Therefore, the terminal can transmit the UCI to the base station without mapping all the UCI to the muting resource, and communication accuracy can be maintained.

[0087] <Proposal 2> In Proposal 2, the terminal maps (or does not map) the muting resource first or before UCI mapping, and then controls the mapping of UCI / UL-SCH bits. However, in Proposal 2, UCI / UL-SCH may be mapped to the muting resource. Furthermore, the muting resource to which UCI / UL-SCH may be mapped is punctured.

[0088] The terminal may initially or before UCI mapping map the muting resource as a reserved muting resource, to which the UCI / UL-SCH may be mapped.

[0089] The mapping of UCI / UL-SCH bits may differ depending on the type / physical layer priority of the UCI / UL-SCH.

[0090] For example, UCI for (HP / LP) HARQ-ACK and / or UCI for (HP / LP) CSI Part 1 may not be able to be mapped to muting resources, in which case the above procedure in Proposal 1 may be applied to the resource mapping in Proposal 2.

[0091] Also, for example, UCI for (HP / LP) CSI Part 2 and UCI for UL-SCH may be mapped to muting resources, in which case conventional procedures may be applied for resource mapping in Proposal 2.

[0092] Muting resources onto which (HP / LP) CSI Part 2 or (HP / LP) UL-SCH UCI can be mapped are punctured.

[0093] An example of a procedure for mapping more than two HARQ-ACK bits in Proposal 2 will be described below with reference to Figure 11. In Figure 11, the horizontal axis represents symbols (time) and the vertical axis represents subcarriers (frequency). In the example of Figure 11, it is assumed that subcarriers #1, #3, #5, #7, #9, and #11 are muted in each of symbols #0, #4, and #5. Therefore, the number of subcarriers to which UCI bits can be mapped in symbols #0, #4, and #5 is 6 (subcarriers #0, #2, #4, #6, #8, and #10). In the example of Figure 11, it is assumed that the subcarrier spacing d is d = 1 in symbol #3 and d = 1 in symbol #4. In Figure 11, the terminal sets the subcarrier spacing d taking into account (excluding) muting resources when mapping UCI bits.

[0094] - Mapping procedure of HARQ-ACK bit exceeding 2 in Proposal 1 0. Reserved muting resources are mapped. (See Fig. 11(A)) 1. HARQ-ACK bits are mapped after the DM-RS symbol. (See Fig. 11(B)) 2. CSI Part 1 bits are mapped. At this time, CSI Part 1 bits are not mapped to reserved muting resources or resources to which HARQ-ACK bits are mapped. (See Fig. 11(C)) 3. CSI Part 2 bits and UL-SCH bits are mapped. At this time, CSI Part 2 bits are not mapped to resources to which HARQ-ACK bits are mapped. In addition, CSI Part 2 bits are mapped to muting resources. (See Fig. 11(D)) 4. UCI bits are punctured in muting resources. (See Fig. 11(E))

[0095] (Effects of Proposal 2) According to Proposal 2, muting resources are mapped (or not mapped) before UCI mapping, and UCI / UL-SCH can be mapped to the muting resources. Furthermore, the muting resources to which UCI / UL-SCH can be mapped are punctured. Therefore, the terminal can transmit UCI to the base station without mapping all UCI to the muting resources, and communication accuracy can be maintained.

[0096] <Proposal 3> In proposal 3, the terminal cancels muting when UCI is mapped to a muting resource on the PUSCH.

[0097] When the (HP / LP) UCI ​​is mapped to the (HP / LP) PUSCH using muting configuration, the terminal may cancel muting and map the UCI / UL-SCH according to the legacy rules shown in the following options.

[0098] The cancellation conditions may be predefined by the specifications / system or may be set by the base station.

[0099] For example, if the UCI contains the (HP / LP) HARQ-ACK bit, UL muting is cancelled, otherwise UL muting as described in Proposal 1 / 2 above may be applied.

[0100] For cancellation of a muting resource, one of the following options may be applied:

[0101] (Option 1) The terminal cancels all symbols of the muting resource. For example, even if UCI is not mapped to some of the muting resources, the terminal may cancel all symbols of the muting resource.

[0102] (Option 2) The terminal cancels some of the symbols of the muting resource. For example, the muting resource configured / defined after the DM-RS symbol may be canceled. In this case, the muting resource of symbol #0 is not canceled.

[0103] (Option 3) The terminal cancels some of the subcarriers of the muting resource for each symbol in which the muting resource exists. For example, the muting resource to which UCI is mapped may be canceled. Also, if the muting resource of subcarrier #x of symbol #y is canceled, the muting resource of subcarrier #x of symbol #z may also be canceled.

[0104] (Option 4) The terminal cancels some of the subcarriers of the muting resource in one symbol where the muting resource exists. For example, the muting resource to which the UCI is mapped may be canceled.

[0105] (Effects of Proposal 3) According to Proposal 3, when UCI is mapped to a muting resource on the PUSCH, muting is canceled. Therefore, the terminal can transmit UCI to the base station without mapping all UCI to the muting resource, thereby maintaining communication accuracy.

[0106] <Proposal 4> In proposal 4, the terminal shifts the UCI resource in the time domain so that the UCI is not mapped to the muting resource.

[0107] UCI cannot be mapped to symbols to which UL muting is applied. Therefore, the terminal treats the symbol as a DM-RS symbol and shifts the UCI resource in the time domain. For example, if symbol #2 is a DM-RS symbol and symbol #3 is a muted symbol, the terminal maps the HARQ-ACK bit from symbol #4.

[0108] (Effects of Proposal 4) According to Proposal 4, UCI resources are shifted in the time domain so that UCI is not mapped to muting resources. Therefore, the terminal can transmit UCI to the base station without mapping all UCI to the muting resources, and communication accuracy can be maintained.

[0109] <Variations> Depending on the type of UCI / UL-SCH, one of the above proposals may be applied, and different proposals may be applied for each type.

[0110] (HARQ-ACK bit) For example, Proposal 3 (cancellation of muting) may be applied to the HARQ-ACK bit. In this case, muting of CSI part 1 / 2 and UL-SCH may also be canceled. Alternatively, muting of only the mapping resource of the HARQ-ACK bit (e.g., muting resource after DM-RS symbol) may be canceled, and muting of other muting resources (e.g., symbol #0) may be maintained.

[0111] (CSI Part 1) For example, Proposal 1 may be applied to CSI Part 1, and UCI bits may be mapped to available resources that are not muted. For example, Proposal 2 may be applied to CSI Part 1, and UCI bits may be mapped to available resources that are not reserved for muting.

[0112] (CSI Part 2 / UL-SCH) For example, Proposal 1 may be applied to CSI Part 2 / UL-SCH, and UCI / UL-SCH bits may be mapped to available non-muted resources. For example, Proposal 2 may be applied to CSI Part 2 / UL-SCH, and UCI / UL-SCH bits may be mapped to any resource (including resources reserved for muting).

[0113] <UE capability> UE capability indicating the capabilities of a terminal may include the following information indicating the capabilities of the terminal. For example, new UE capabilities and report signaling (and RRC settings) shown below may be defined for each UE / FR / FC, etc. Terminal 200 may report the following information indicating the capabilities of the terminal to base station 100. Note that the information indicating the capabilities of the terminal may correspond to information defining the capabilities of the terminal. - Whether UCI multiplexing on PUSCH is supported when muting resources - Whether UCI multiplexing of HARQ-ACK / CSI Part 1 / CSI Part 2 / UL-SCH on PUSCH is supported when muting resources - Whether cancellation of muting resources is supported when multiplexing UCI on PUSCH - Whether symbol shift of UCI resource mapping in the time domain is supported

[0114] Next, the configurations of the base station 100 and the terminal 200 will be described. Note that the configurations of the base station 100 and the terminal 200 described below are examples of functions related to this embodiment. The base station 100 and the terminal 200 may have functions not shown. Furthermore, the functional divisions and / or names of the functional units are not limited as long as the functions perform the operations related to this embodiment.

[0115] <Configuration of Base Station> Fig. 12 is a block diagram showing an example of the configuration of base station 100 according to this embodiment. Base station 100 includes, for example, a transmitting unit 101, a receiving unit 102, and a control unit 103. Base station 100 communicates with terminal 200 (see Fig. 13) by radio.

[0116] The transmitter 101 transmits a downlink (DL) signal to the terminal 200. For example, under the control of the controller 103, the transmitter 101 transmits a DL signal (for example, the above-mentioned RRC, SIB, MAC CE, DCI, notification, confirmation, etc.).

[0117] The DL signal may include, for example, a downlink data signal and control information (e.g., Downlink Control Information (DCI)). The DL signal may also include information indicating scheduling related to signal transmission of terminal 200 (e.g., an UL grant). The DL signal may also include control information of higher layers (e.g., control information of Radio Resource Control (RRC)). The DL signal may also include a reference signal.

[0118] The channels used for transmitting DL signals include, for example, a downlink data channel and a downlink control channel. For example, the downlink data channel may include a PDSCH (Physical Downlink Shared Channel), and the downlink control channel may include a PDCCH (Physical Downlink Control Channel). For example, the base station 100 transmits downlink control information to the terminal 200 using the PDCCH and transmits downlink data signals using the PDSCH.

[0119] The reference signal included in the DL signal may include at least one of a demodulation reference signal (Demodulation Reference Signal (DMRS)), a Phase Tracking Reference Signal (PTRS), a Channel State Information-Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), and a Positioning Reference Signal (PRS) for position information. For example, reference signals such as DMRS and PTRS are used for demodulating downlink data signals and are transmitted using the PDSCH.

[0120] The receiving unit 102 receives an uplink (UL) signal transmitted from the terminal 200. For example, the receiving unit 102 receives an UL signal (for example, the above-mentioned request, notification, etc.) under the control of the control unit 103.

[0121] The transmitting unit 101 and the receiving unit 102 may be collectively referred to as a communication unit.

[0122] The control unit 103 controls the communication operations of the base station 100 , including the transmission processing of the transmission unit 101 and the reception processing of the reception unit 102 .

[0123] For example, the control unit 103 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 101. The control unit 103 also outputs the data, control information, etc. received from the receiving unit 102 to the upper layer.

[0124] For example, the control unit 103 allocates resources (or channels) used for transmitting and receiving DL signals and / or resources used for transmitting and receiving UL signals based on signals (e.g., data and control information, etc.) received from the terminal 200 and / or data and control information, etc. acquired from a higher layer. Information on the allocated resources may be included in control information transmitted to the terminal 200.

[0125] 13 is a block diagram showing an example of the configuration of terminal 200 according to this embodiment. Terminal 200 includes, for example, a receiving unit 201, a transmitting unit 202, and a control unit 203. Terminal 200 communicates with base station 100, for example, wirelessly.

[0126] The transmitter 202 transmits an UL signal to the base station 100. For example, the transmitter 202 transmits the UL signal under the control of the controller 203. For example, the transmitter 202 may transmit an MsgA PRACH in a valid MsgA RO determined by the controller 203, or may transmit an MsgA PUSCH in a valid MsgA PO determined by the controller 203.

[0127] The UL signal may include, for example, an uplink data signal and control information (e.g., UCI). For example, information related to the processing capability of the terminal 200 (e.g., UE capability) may be included. The UL signal may also include a reference signal.

[0128] Channels used for transmitting UL signals include, for example, an uplink data channel and an uplink control channel. For example, the uplink data channel includes a PUSCH (Physical Uplink Shared Channel), and the uplink control channel includes a PUCCH (Physical Uplink Control Channel). For example, terminal 200 transmits uplink control information to base station 100 using the PUCCH and transmits uplink data signals using the PUSCH.

[0129] The reference signals included in the UL signal may include, for example, at least one of DMRS, PTRS, CSI-RS, SRS, and PRS. For example, the reference signals such as DMRS and PTRS are used for demodulating the uplink data signal and are transmitted using an uplink channel (for example, PUSCH).

[0130] The receiving unit 201 and the transmitting unit 202 may be collectively referred to as a communication unit.

[0131] The control unit 203 controls the communication operations of the terminal 200 , including the reception processing in the receiving unit 201 and the transmission processing in the transmitting unit 202 .

[0132] For example, the control unit 203 acquires information such as data and control information from the upper layer and outputs it to the transmitting unit 202. Also, the control unit 203 outputs, for example, the data and control information received from the receiving unit 201 to the upper layer.

[0133] For example, the control unit 203 controls transmission of information to be fed back to the base station 100. The information to be fed back to the base station 100 may include, for example, HARQ-ACK, Channel State Information (CSI), or a Scheduling Request (SR). The information to be fed back to the base station 100 may be included in UCI.

[0134] Note that the channel used for transmitting the DL signal and the channel used for transmitting the UL signal are not limited to the above-mentioned example. For example, the channel used for transmitting the DL signal and the channel used for transmitting the UL signal may include a Random Access Channel (RACH) and a Physical Broadcast Channel (PBCH). The RACH may be used to transmit Downlink Control Information (DCI) including a Random Access Radio Network Temporary Identifier (RA-RNTI), for example.

[0135] <Hardware Configuration, etc.> The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining software with the single device or the multiple devices.

[0136] Functions include, but are not limited to, judgment, determination, assessment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0137] For example, a base station, a terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the communication method of the present disclosure. Fig. 14 is a diagram illustrating an example of the hardware configuration of a base station and a terminal according to an embodiment of the present disclosure. The above-described base station 100 and terminal 200 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0138] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of base station 100 and terminal 200 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0139] Each function in the base station 100 and the terminal 200 is realized by loading specified software (programs) onto hardware such as the processor 1001 and the memory 1002, causing the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0140] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 103 and control unit 203 may be realized by the processor 1001.

[0141] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002 and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 203 of the terminal 200 may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be made for other functional blocks. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may also be transmitted from a network via a telecommunications line.

[0142] The memory 1002 is a computer-readable recording medium and may be configured by, for example, at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), etc. The memory 1002 may also be called a register, a cache, a main memory (primary storage device), etc. The memory 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to an embodiment of the present disclosure.

[0143] Storage 1003 is a computer-readable recording medium, and may be composed of at least one of, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc. Storage 1003 may also be referred to as an auxiliary storage device. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium including at least one of memory 1002 and storage 1003.

[0144] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitter 101, receiver 102, receiver 201, transmitter 202, etc. may be realized by the communication device 1004.

[0145] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0146] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0147] Furthermore, base station 100 and terminal 200 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

[0148] (Supplementary Notes on the Embodiments) Although the embodiments of the present disclosure have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present disclosure; matters described in two or more items may be used in combination as needed, and matters described in one item may apply to matters described in another item (unless inconsistent). Boundaries between functional units or processing units in functional block diagrams do not necessarily correspond to boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of processing procedures described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, base stations and terminals have been described using functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of a base station in accordance with an embodiment of the present disclosure, and the software operated by the processor of a terminal in accordance with an embodiment of the present disclosure may each 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, or any other suitable storage medium.

[0149] <Notification of Information, Signaling> Notification of information is not limited to the embodiments described in the present disclosure and may be performed using other methods. For example, notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB))), other signals, or a combination thereof. Furthermore, RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0150] <Applicable Systems> The embodiments described in the present disclosure are applicable to LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or 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 802.17 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (Wi-Fi (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (Wi-Fi (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), IEEE 802.34 (WiMAX (registered trademark The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of LTE and / or LTE-A with 5G).

[0151] <Processing Procedures, etc.> The processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be rearranged unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the particular order presented.

[0152] <Operation of Base Station> In the present disclosure, specific operations described as being performed by a base station may also be performed by its upper node in some cases. In a network consisting of one or more network nodes having a base station, it is clear that various operations performed for communication with a terminal may be performed by at least one of the base station and another network node other than the base station (for example, an MME or an S-GW, etc., but are not limited to these). Although the above example illustrates a case where there is one other network node other than the base station, a combination of multiple other network nodes (for example, an MME and an S-GW) may also be used.

[0153] <Direction of Input / Output> Information, etc. (see <Information, Signal>) can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may also be input / output via multiple network nodes.

[0154] <Handling of Input / Output Information, etc.> Input / output information, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information, etc. may be overwritten, updated, or added. Output information, etc. may be deleted. Input information, etc. may be sent to another device.

[0155] <Determination method> The determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0156] <Variations of Aspects, etc.> Each aspect / embodiment described in the present disclosure may be used alone, in combination, or switched depending on the implementation. In addition, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., by not notifying the predetermined information).

[0157] Although the present disclosure has been described in detail above, it is clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure.

[0158] <Software> Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0159] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0160] Information, Signals, etc., described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be referred to throughout the above description, may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0161] Note that terms described in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0162] <System, Network> As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0163] <Parameter and Channel Names> Furthermore, the information, parameters, and the like described in the present disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or other corresponding information. For example, a radio resource may be indicated by an index.

[0164] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0165] <Base Station> In the present disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as a macrocell, a small cell, a femtocell, and a picocell.

[0166] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be partitioned into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a remote radio head (RRH)). The terms "cell" or "sector" refer to part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication services within that coverage area.

[0167] In the present disclosure, the base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.

[0168] Mobile Station In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," and the like may be used interchangeably.

[0169] A mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0170] <Base Station / Mobile Station> At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, etc. The mobile object refers to a movable object, and may move at any speed. Naturally, this also includes cases where the mobile object is stationary. Examples of the mobile object include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and objects mounted thereon. The mobile object may also be a mobile object that moves autonomously based on an operational command. It may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0171] Furthermore, a base station in the present disclosure may be read as a terminal. For example, the embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a terminal is replaced with communication between multiple terminals (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the terminal may be configured to have the functions of the base station described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to communication between terminals (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0172] Similarly, the term "terminal" in the present disclosure may be read as "base station." In this case, the base station may be configured to have the functions of the terminal described above.

[0173] Fig. 15 shows an example configuration of a vehicle 2001. As shown in Fig. 15, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example.

[0174] The drive unit 2002 is configured, for example, by an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.

[0175] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0176] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.

[0177] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various types of information, such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The information service unit 2012 provides various types of multimedia information and multimedia services to the occupants of the vehicle 2001 by using information acquired from external devices via the communication module 2013, etc.

[0178] The information service unit 2012 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0179] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS, etc.), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0180] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 transmits and receives data via the communication port 2033 to and from the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 2029, which are provided in the vehicle 2001.

[0181] The communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 2013 may be located either inside or outside the electronic control unit 2010. The external device may be, for example, a base station, a mobile station, or the like.

[0182] The communication module 2013 may transmit at least one of signals from the above-mentioned various sensors 2021 to 2029 input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021 to 2029, the information service unit 2012, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above-mentioned input.

[0183] The communication module 2013 receives various information (traffic information, traffic signal information, vehicle-to-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, and the like provided in the vehicle 2001.

[0184] <Meaning and Interpretation of Terms> As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching a table, database, or other data structure), ascertaining something that is considered to be a "judging" or "determining," and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like that are considered to be a "judging" or "determining." Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0185] The terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.

[0186] <Reference Signal> A reference signal can also be abbreviated as RS (Reference Signal), and may also be called a pilot depending on the applicable standard.

[0187] <Meaning of "based on"> As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0188] "First," "Second" Any reference to an element using designations such as "first," "second," etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.

[0189] <Means> The "means" in the configuration of each device above may be replaced with "section," "circuit," "device," or the like.

[0190] Open Format: When the terms "include," "including," and variations thereof are used in this disclosure, these terms are intended to be inclusive, similar to the term "comprising." Furthermore, when the term "or" is used in this disclosure, it is not intended to be an exclusive or.

[0191] <Time Units such as TTI, Frequency Units such as RB, and Radio Frame Configuration> A radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0192] Numerology may be a communication parameter that applies to the transmission and / or reception of a signal or channel, and may indicate, for example, at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, and specific windowing operations performed by the transceiver in the time domain.

[0193] A slot may be composed of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol). A slot may be a time unit based on numerology.

[0194] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.

[0195] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0196] For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0197] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. Note that the definition of TTI is not limited to this.

[0198] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0199] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0200] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0201] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and greater than or equal to 1 ms.

[0202] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may be determined based on numerology.

[0203] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0204] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0205] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0206] A Bandwidth Part (BWP) (which may also be referred to as a fractional bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a Common Reference Point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0207] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0208] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0209] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples, and various changes may be made to the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.

[0210] <Maximum Transmit Power> The "maximum transmit power" in the present disclosure may refer to the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0211] Articles In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0212] <"Different"> In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that the term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0213] One aspect of the present disclosure is useful in wireless communication systems.

[0214] 10 Wireless communication system 20 NG-RAN 100 Base station (gNB) 200 Terminal (UE) 101, 202 Transmitter 102, 201 Receiver 103, 203 Controller

Claims

1. A terminal comprising: a control unit that sets a first resource to be muted and a second resource to which uplink control information is mapped in a time unit in which multiple subbands that make up a time division duplex band are available; and a transmission unit that transmits the uplink control information in the time unit based on the settings, wherein the control unit sets the first resource and the second resource so that at least a portion of the second resource is different from the first resource.

2. The terminal according to claim 1, wherein the control unit maps a pattern of the first resource and sets the second resource so that the uplink control information is not mapped to the pattern.

3. The terminal according to claim 1, wherein the control unit sets the first resource, maps the uplink control information to a third resource including resources other than the first resource, and, if the third resource includes the first resource, punctures the uplink control information mapped to the first resource.

4. The terminal according to claim 1, wherein the control unit cancels muting of the first resource when mapping the uplink control information to the first resource.

5. A communication method in which a terminal sets a first resource to be muted and a second resource to which uplink control information is mapped in a time unit in which multiple subbands constituting a time division duplex band are available, and transmits the uplink control information in the time unit based on the settings, and the first resource and the second resource are set so that at least a part of the second resource is different from the first resource.

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