Terminal, base station, communication system, and communication method

Abstract

Provided is a terminal including a reception unit that receives a setting related to an uplink control channel from a base station, a control unit that determines a resource for the uplink control channel on the basis of the setting, and a transmission unit that sends the uplink control channel to the base station in the resource. When the setting indicates that frequency hopping is disabled, the control unit uses different base sequences for a base sequence applied to a hop in the first half of the resource and a base sequence applied to a hop in the second half of the resource and determines the resource that is different from a resource used by a UE that is not a UE with reduced functions.

Description

[Technical field]

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

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

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

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

[0005] In LTE or NR, UE categories or UE capabilities for IoT (Internet of Things) are defined that reduce functions that normal terminals support as mandatory, such as functions related to transmission / reception bandwidth and the number of antennas. For example, eMTC (enhanced Machine Type Communication) and NB-IoT (Narrow Band IoT) are defined in LTE, and RedCap (Reduced Capability) is defined in NR. Since the UE capabilities supported by such IoT devices are different from those of existing devices, it has been difficult to efficiently multiplex resources for transmitting uplink control information, for example.

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

[0007] According to the disclosed technology, a control unit that determines an uplink control channel resource different from an uplink control channel resource used by a UE other than a UE with reduced functionality when an initial UL-BWP (Uplink Bandwidth part) for a UE (User Equipment) with reduced functionality is set by the system information, when the UL-BWP is set within a maximum bandwidth of the UE with reduced functionality by the system information, and when disablement of frequency hopping is set by the system information; and a transmission unit that notifies the base station that the UE has reduced functionality during a random access procedure, and transmits to the base station an uplink control channel including a HARQ-ACK corresponding to a notification from the base station after the notification in the random access procedure, using the different uplink control channel resource. A terminal is provided. Effect of the Invention

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

[0009] [Figure 1] 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention. [Diagram 2] FIG. 13 is a diagram illustrating an example of transmitting a PUCCH. [Diagram 3] FIG. 13 is a diagram illustrating an example (1) of resources for transmitting PUCCH. [Figure 4] FIG. 13 is a diagram illustrating an example (2) of resources for transmitting PUCCH. [Diagram 5] FIG. 11 is a diagram showing an example (3) of resources for transmitting PUCCH. [Figure 6]A figure showing an example (1) of RedCapUE transmitting PUCCH. [Figure 7] A figure showing an example (2) of RedCapUE transmitting PUCCH. [Figure 8] FIG. 2 is a diagram showing an example (1) of resources for transmitting PUCCH in an embodiment of the present invention. [Figure 9] FIG. 13 is a diagram showing an example (2) of resources for transmitting PUCCH in the embodiment of the present invention. [Figure 10] FIG. 11 is a diagram showing an example (3) of resources for transmitting PUCCH in an embodiment of the present invention. [Figure 11] FIG. 11 is a diagram showing an example (4) of resources for transmitting PUCCH in an embodiment of the present invention. [Figure 12] FIG. 5 is a diagram showing an example (5) of resources for transmitting PUCCH in an embodiment of the present invention. [Figure 13] FIG. 6 is a diagram showing an example (6) of resources for transmitting PUCCH in an embodiment of the present invention. [Figure 14] FIG. 7 is a diagram showing an example (7) of resources for transmitting PUCCH in an embodiment of the present invention. [Figure 15] FIG. 13 is a diagram illustrating an example in which base sequence hopping is not applied to PUCCH transmission. [Figure 16] FIG. 1 illustrates an example of applying base sequence hopping to PUCCH transmission. [Figure 17] A figure showing an example of applying base sequence hopping and frequency hopping to PUCCH transmission. [Figure 18] FIG. 13 illustrates cross-correlation between base sequence indexes. [Figure 19] FIG. 2 is a diagram illustrating an example of applying base sequence hopping to PUCCH transmission in an embodiment of the present invention. [Figure 20] FIG. 8 is a diagram showing an example (8) of resources for transmitting PUCCH in an embodiment of the present invention. [Figure 21]FIG. 9 is a diagram showing an example (9) of resources for transmitting PUCCH in an embodiment of the present invention. [Figure 22] 2 is a diagram illustrating an example of a functional configuration of a base station 10 according to an embodiment of the present invention. [Diagram 23] 2 is a diagram illustrating an example of a functional configuration of a terminal 20 according to an embodiment of the present invention. [Figure 24] 2 is a diagram illustrating an example of a hardware configuration of a base station 10 or a terminal 20 according to an embodiment of the present invention. [Diagram 25] FIG. 2 is a diagram showing an example of a configuration of a vehicle 2001 according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

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

[0012] In the embodiment 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 convenience of description, and similar signals, functions, etc. may be called by other names. In addition, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even if a signal is used in NR, it is not necessarily specified as "NR-".

[0013] Furthermore, in the embodiment of the present invention, the duplexing method may be a time division duplex (TDD) method, a frequency division duplex (FDD) method, or another method (for example, flexible duplex, etc.).

[0014] Furthermore, in the embodiment of the present invention, when radio parameters, etc. are "configured," this may mean that predetermined values ​​are pre-configured, or that radio parameters notified from base station 10 or terminal 20 are configured.

[0015] Fig. 1 is a diagram for explaining a wireless communication system in an embodiment of the present invention. As shown in Fig. 1, the wireless communication system in the embodiment of the present invention includes a base station 10 and a terminal 20. Although Fig. 1 shows one base station 10 and one terminal 20, this is an example, and there may be a plurality of each.

[0016] The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20. The physical resources of a wireless signal are defined in a time domain and a frequency domain, and the time domain may be defined by the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks. Furthermore, a Transmission Time Interval (TTI) in the time domain may be a slot or a subslot, and the TTI may be a subframe.

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

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

[0019] The terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, a communication module for M2M (Machine-to-Machine), etc. As shown in Fig. 1, the terminal 20 receives a control signal or data from the base station 10 in DL and transmits a control signal or data to the base station 10 in UL, thereby using various communication services provided by the wireless communication system. The terminal 20 may be called a UE, and the base station 10 may be called a gNB.

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

[0021] Fig. 2 is a diagram showing an example of transmitting a PUCCH. Fig. 2 is a diagram showing an example of transmitting a PUCCH reporting a HARQ-ACK after an RRC connection is established. As shown in Fig. 2, a PUCCH resource set is selected based on an Uplink Control Information (UCI) payload size. The PUCCH resource is notified from the base station 10 to the terminal 20 by 3 bits by Downlink Control Information (DCI) and 1 or 2 bits that are implicitly notified based on a Control Channel Element (CCE) index.

[0022] 2, in PUCCH formats 0 and 1, PUCCH resources are specified by three bits by DCI and one or two bits implicitly notified based on a CCE index, and in PUCCH formats 2, 3, and 4, PUCCH resources are specified by three bits by DCI. The payload size of the PUCCH resource set is specified by an RRC (Radio Resource Control) parameter.

[0023] Also, as shown in Figure 2, when PUCCH resources are indicated in slot n+k by DCI#1 and DCI#2, the PUCCH resource on which a HARQ-ACK (Hybrid automatic repeat request - Acknowledgement) bit is transmitted is specified by the last DCI, DCI#2.

[0024] Note that the HARQ-ACK for SPS (Semi persistent scheduling) is transmitted using a PUCCH resource specified by a higher layer parameter.

[0025] Fig. 3 is a diagram showing an example (1) of a resource for transmitting a PUCCH. Fig. 3 is a diagram showing a PUCCH resource before an RRC connection is established or when a dedicated PUCCH resource (set by PUCCH-ResourceSet of PUCCH-Config of RRC parameters) is not set. This PUCCH resource may be used as a PUCCH resource for transmitting HARQ-ACK for Msg.4 and Msg.B in random access. As shown in Fig. 3, the PUCCH resource is determined based on 4 bits of RMSI (Remaining minimum system information), 3 bits of DCI, and 1 bit that is implicitly notified based on CCE.

[0026] More specifically, 16 types of cell-specific PUCCH resource sets are notified by 4-bit RMSI, and UE-specific PUCCH resources are defined for each of them. Fig. 3 shows an example in which 4-bit RMSI is 1101, and the cell-specific PUCCH resource set is a set of PUCCH format 1, leading symbol 0, number of symbols 14, PRB offset 2, and initial CS index {0, 3, 6, 9}, and 16 types of UE-specific PUCCH resources are defined by the hopping direction, UE-specific PRB offset, and initial CS index, and one of the PUCCH resources is specified based on 3-bit DCI and 1 bit that is implicitly notified based on CCE.

[0027] Also, as shown in Fig. 3, frequency hopping is applied to PUCCH resources, with the first 7 symbols out of 14 symbols being the first frequency hop and the last 7 symbols being the second frequency hop. The resources obtained by adding the PRB offset and UE-specific PRB offset to the lower end of the initially active UL-BWP (Bandwidth Part) and the resources obtained by subtracting the PRB offset and UE-specific offset from the upper end are used as PUCCH resources. In the case of hopping direction 0, the first frequency hop is allocated to the lower frequency resource and the second frequency hop is allocated to the higher frequency resource. In the case of hopping direction 1, the first frequency hop is allocated to the higher frequency resource and the second frequency hop is allocated to the lower frequency resource.

[0028] FIG. 4 is a diagram showing an example (2) of a resource for transmitting a PUCCH. FIG. 4 shows an example in which the 4-bit RMSI is 0000, and the initial CS index set is {0, 3}. In the UE-specific PUCCH resource, the initial CS index 0 or 3 is specified. As shown in FIG. 4, the cyclic shift a 0 From a 11Among them, in the initial CS index 0, a 0 0, a 6 is used as 1, and in the initial CS index 3, a 3 0, a 9 is used as 1.

[0029] FIG. 5 is a diagram showing an example (3) of resources for transmitting PUCCH. FIG. 5 shows an example of 0001, where the initial CS index set is {0, 4, 8}. In the UE-specific PUCCH resource, the initial CS indexes 0, 4, and 8 are specified. 0 From a 11 Among them, in the initial CS index 0, a 0 0, a 6 is used as 1, and in the initial CS index 4, a 4 0, a 10 is used as 1, and in the initial CS index 8, a 8 0, a 2 is used as 1.

[0030] FIG. 6 is a diagram showing an example (1) in which a RedCap UE transmits a PUCCH. A RedCap (Reduced Capability) UE in NR supports only a band narrower than the initial UL-BWP (e.g., 100 MHz bandwidth) of an existing UE. As shown in FIG. 6, the RedCap UE cannot perform frequency hopping at both ends of the initial UL-BWP of the existing UE, so an initial UL-BWP for the RedCap UE may be configurable. As shown in FIG. 6, the RedCap UE may perform frequency hopping at both ends of the initial UL-BWP for the RedCap UE.

[0031] When the initial UL-BWP for RedCapUE is configurable, the frequency hopping applied to the PUCCH of the HARQ-ACK corresponding to Msg.4 or Msg.B may be enabled or disabled. By disabling the frequency hopping applied to the PUCCH of the HARQ-ACK corresponding to Msg.4 or Msg.B, it is possible to avoid the case where the PUSCH resource of the existing UE is fragmented (PUSCH resource fragmentation), which is particularly effective in the case of DFT-s-OFDM.

[0032] In addition, the RedCap UE may enable or disable frequency hopping applied to the PUCCH of the HARQ-ACK corresponding to Msg.4 or Msg.B based on the SIB.

[0033] Figure 7 is a diagram showing an example (2) in which RedCapUE transmits PUCCH. A UE that is not a RedCap (Reduced Capability) UE in NR (hereinafter also referred to as "non-RedCapUE") transmits PUCCH of HARQ-ACK corresponding to Msg.4 or Msg.B in the manner shown in Figure 3. As shown in Figure 7, when RedCapUE transmits PUCCH of HARQ-ACK corresponding to Msg.4 or Msg.B without applying frequency hopping and non-RedCapUE transmits PUCCH of HARQ-ACK corresponding to Msg.4 or Msg.B by applying frequency hopping, PUCCH resources overlap or collide, and the gNB cannot properly receive the PUCCH.

[0034] On the other hand, if PUCCH resources are specified by DCI so that collision of PUCCH resources does not occur, the multiplexing capacity of PUCCH may be reduced or holes may be generated in resources, making it difficult to use resources efficiently.

[0035] Therefore, a method is required for efficiently multiplexing PUCCHs of HARQ-ACKs corresponding to Msg. 4 or Msg. B between non-RedCap UE and RedCap UE.

[0036] Therefore, for a PUCCH that transmits an HARQ-ACK corresponding to Msg.4 or Msg.B, RedCapUE may determine PUCCH resources that are at least some of the resources different from the PUCCH resources determined by the method shown in Figure 3, and transmit a PUCCH that transmits an HARQ-ACK corresponding to Msg.4 or Msg.B.

[0037] The embodiment of the present invention may be applied when at least one of the following conditions 1) to 4) is satisfied.

[0038] Condition 1) In the embodiment of the present invention, a "RedCap UE" may be a UE that has notified that it is a RedCap UE by Msg.1, Msg.3, or Msg.A, may be a UE that has made a UE capability report indicating that it is a RedCap UE, or may be a UE in which RedCap is configured by a higher layer. The embodiment of the present invention may be applied to a RedCap UE.

[0039] Condition 2) The embodiment of the present invention may be applied to RedCapUE only when the initial UL-BWP for RedCap is set, that is, when the initial UL-BWP separated from RedCapUE is set. For example, the embodiment of the present invention may be applied only when the initial UL-BWP for RedCap is set within the maximum bandwidth of RedCapUE (20 MHz in FR1, 100 MHz in FR2). Also, for example, the embodiment of the present invention may be applied regardless of whether the initial UL-BWP for RedCap is set or its size.

[0040] Condition 3) The embodiment of the present invention may be applied to RedCapUE only when the SIB is set to enable or disable frequency hopping. For example, the embodiment of the present invention may be applied only when the SIB is set to disable frequency hopping. Furthermore, when frequency hopping is not set in the SIB, the resource of the PUCCH for transmitting the HARQ-ACK corresponding to Msg.4 or Msg.B may be determined using the method shown in FIG. 3 or the method according to the embodiment of the present invention, assuming that frequency hopping is enabled. Alternatively, when frequency hopping is not set in the SIB, the resource of the PUCCH for transmitting the HARQ-ACK corresponding to Msg.4 or Msg.B may be determined using the method shown in FIG. 3 or the method according to the embodiment of the present invention, assuming that frequency hopping is disabled.

[0041] Condition 4) The embodiment of the present invention may be applied only to the case without frequency hopping, or may be applied to RedCapUE in both the case with and without frequency hopping. Hereinafter, RedCapUE is described as having no frequency hopping and non-RedCapUE is described as having frequency hopping, but is not limited thereto. RedCapUE may have frequency hopping, and if RedCapUE has frequency hopping, the hopping direction may be indicated to each UE individually by DCI and CCE index in the method shown in FIG. 3.

[0042] Fig. 8 is a diagram showing an example (1) of resources for transmitting PUCCH in an embodiment of the present invention. As shown in Fig. 8, a table indicating UE-specific PUCCH resources for RedCap for determining PUCCH resources may be newly defined. A UE for which any one of the above conditions 1) to 4) is satisfied may set at least one of the UE-specific PRB offset and CS index to a value different from that of the existing specification (for example, the method shown in Fig. 3).

[0043] For example, as shown in Figure 8, in the UE-specific PUCCH resource, the UE-specific PRB offset may be set to 2 to avoid resource collision. As shown in Figure 8, when frequency hopping is disabled, the hopping direction is not required in the information included in the UE-specific PUCCH resource.

[0044] Also, as shown in FIG. 8, in the UE-specific PUCCH resource, the UE-specific PRB offset is set to (N BWP -1)-2, (N BWP -1)-3, etc. may also be used. BWP may be the size of the BWP and may be expressed in number of RBs.

[0045] Also, although an example of changing a UE-specific PUCCH resource is shown in FIG. 8, the present invention is not limited to this example, and a UE that satisfies any one of the above conditions 1) to 4) in a cell-specific PUCCH resource set in the existing specifications may add a predetermined PRB offset. The predetermined PRB offset may be a constant value regardless of the 4-bit RMSI, or may vary depending on the value of the 4-bit RMSI. The predetermined value may be specified in the specifications, or may be set by a higher layer (RRC, SIB, etc.).

[0046] Fig. 9 is a diagram showing an example (2) of resources for transmitting a PUCCH in an embodiment of the present invention. As shown in Fig. 9, information indicating a PRB offset for RedCap may be added to a cell-specific PUCCH resource set. RedCap UE may refer to the PRB offset for RedCap, and non-RedCap UE may refer to the PRB offset. The value of the PRB offset for RedCap shown in Fig. 9 is an example and is not limited to this.

[0047] In Fig. 9, as an example, in a certain RMSI state, there are 16 UE-specific resources, and in the same RMSI state, none of the 16 resources collide with non-RedCapUEs. In the example of Fig. 9, the PUCCH resource is placed near the lower end of the initial UL-BWP, but the PUCCH resource may be placed closer to either the upper end or the lower end of the initial UL-BWP using DCI and CCE indexes.

[0048] Furthermore, in a UE for which the above conditions 1) to 4) are satisfied, the PUCCH resource may be determined by a CS index different from the method shown in Fig. 3. For example, in the UE-specific PUCCH resource shown in Fig. 3, a predetermined value may be added to all initial CS indexes. The predetermined value may be, for example, +1. The predetermined value may be expressed as a positive value or a negative value. For example, +1 or +2 may be expressed as -1 or -2.

[0049] The predetermined value may be, for example, any of the values ​​shown in 1)-4) below.

[0050] 1) In PF (PUCCH Format) 0, when the initial CS index set is {0, 3}, the CS indexes {0, 3, 6, 9} are used, so the predetermined value may be +1 or +2.

[0051] 2) In PF0, when the initial CS index set is {0, 4, 8}, the predetermined value may be +1 since the CS indexes {0, 2, 4, 6, 8, 10} are used.

[0052] 3) In PF1, when the initial CS index set is {0,6}, since the CS index {0,6} is used, the predetermined value may be +1, +2, +3, +4, or +5. In addition, the predetermined value may be +3, +2, or +4 by avoiding adjacent CS indexes in consideration of characteristics.

[0053] 4) In PF1, if the initial CS index set is {0, 3, 6, 9}, the predetermined value may be +1 or +2 since the CS index {0, 6} is used.

[0054] In addition, the method of adding a predetermined value to all initial CS indexes in the UE-specific PUCCH resource shown in Fig. 3 may be applicable only to some 4-bit RMSI states. For example, when the initial CS index set of PF1 is {0,6}, there is a margin of unused CS indexes. Therefore, the method of adding a predetermined value to all initial CS indexes in the UE-specific PUCCH resource may be applied only when the initial CS index set of PF1 is {0,6}.

[0055] FIG. 10 is a diagram showing an example (3) of resources for transmitting PUCCH in an embodiment of the present invention. As shown in FIG. 10, TD (Time domain)-OCC (Orthogonal cover code) may be introduced into the PUCCH resource. Conventionally, PF1 supports TD-OCC, but TD-OCC is not applied to PUCCH for transmitting HARQ-ACK corresponding to Msg.4 or Msg.B. Note that when TD-OCC is not applied, it may be considered to be equivalent to the case where TD-OCC of [+1,+1,...,+1] is applied. Note that [+1,+1,...,+1] means a sequence in which all codes (sequence elements) are "+1".

[0056] A UE for which any one of the above conditions 1) to 4) is satisfied may apply TD-OCC to transmit a PUCCH for transmitting a HARQ-ACK corresponding to Msg. 4 or Msg. B. Application of TD-OCC may be limited to PF1 or may be applied to PF0.

[0057] In order to separate the TD-OCC between UEs, even if frequency hopping is disabled, the OCC of the TD-OCC station that is applied when frequency hopping is enabled may be applied.

[0058] The applied TD-OCC index may be different from the TD-OCC index of [+1,+1,...,+1]. The specific TD-OCC index may be indicated by a 4-bit RMSI or a DCI / CCE index.

[0059] Fig. 11 is a diagram showing an example (4) of resources for transmitting PUCCH in an embodiment of the present invention. A UE for which any one of the above conditions 1) to 4) is satisfied may not need to transmit the second hop if frequency hopping is disabled, as shown in Fig. 11. This makes it possible to avoid collision with PUCCH resources of other UEs. When the number of PUCCH symbols is N, if frequency hopping is disabled, the number of PUCCH symbols actually transmitted may be shorter, and only the first hop, which is half the number of symbols N, may be used.

[0060] The enablement or disablement of frequency hopping may be indicated by DCI or CCE index. When the disablement of frequency hopping is set by RRC or SIB, the DCI or CCE index may indicate whether to transmit a PUCCH resource corresponding to the second hop. Note that the terminal 20 may transmit the second hop and not transmit the first hop, and may not transmit a hop that overlaps with the PUCCH resource of a non-RedCap UE.

[0061] 12 is a diagram showing an example (5) of a resource for transmitting a PUCCH in the embodiment of the present invention. In the method of determining a PUCCH resource shown in FIG. 3, when the 4-bit RMSI is 1111, the PRB offset is Floor(N BWP As shown in FIG. 12, the PRB offset is Floor(N BWP / 4), the frequency hopping destination resource may be placed within the range of the RedCap initial UL-BWP.

[0062] For example, the PRB offset corresponding to at least one 4-bit RMSI for RedCap among the cell-specific PUCCH resource sets is set as Floor(N BWP / M), where M may be set by higher layer signaling such as RRC or SIB, or may be specified in a specification. M may be a single value, or may be a different value for each 4-bit RMSI.

[0063] FIG. 13 is a diagram showing an example (6) of a resource for transmitting a PUCCH in the embodiment of the present invention. As shown in FIG. 13, the PRB offset Floor(N BWP / 4) to the upper end of the initial UL-BWP for RedCap, and frequency hopping may be performed. That is, the first hop may be performed by applying the PRB offset Floor(N BWP / 4) is applied to the position, and the second hop is set to the top end of the RedCap initial UL-BWP with the PRB offset Floor(N BWP By using this position, the PUCCH resource of the frequency hopping destination can be arranged within the range of the initial UL-BWP for RedCap.

[0064] Fig. 14 is a diagram showing an example (7) of resources for transmitting PUCCH in an embodiment of the present invention. As shown in Fig. 14, the first hop may be placed at the lower end of the initial UL-BWP for RedCap, and the second hop may be placed at a position obtained by applying PRB offset X to the lower end of the initial UL-BWP for RedCap, and frequency hopping may be performed. This makes it possible to place the frequency hopping destination resource within the range of the initial UL-BWP for RedCap. Fig. 14 shows the case where X=Floor(N BWP / 4). Since the transmission bandwidth of the PUCCH is limited to X, frequency hopping of the PUCCH resource can be performed within the range of the initial UL-BWP for RedCap.

[0065] The following describes the base sequence hopping applied to PUCCH. The base sequence hopping may be performed according to the frequency hopping scheme. For example, if frequency hopping is disabled, the slot-level base sequence hopping may be performed, and if frequency hopping is enabled, the frequency hop-level base sequence hopping may be performed.

[0066] FIG. 15 is a diagram illustrating an example in which base sequence hopping is not applied to PUCCH transmission. When frequency hopping of PUCCH is disabled, as shown in FIG. 15, in PF1, sequence #m 0 Only the TD-OCC length is used, and intra-slot hopping may not be applied. The spreading factor (SF) corresponds to the TD-OCC length, and a larger SF can increase the UE capacity.

[0067] 16 is a diagram illustrating an example of applying base sequence hopping to PUCCH transmission. When frequency hopping of PUCCH is enabled, as shown in FIG. 16, in PF1, sequence #m is applied to the first frequency hop. 0 , the second frequency hop has sequence #m 1may be used to perform intra-slot hopping. In the example of FIG. 16, the PRB of the first frequency hop is equal to the PRB of the second frequency hop. When frequency hopping is enabled, a different base sequence index may be used for each hop index regardless of whether the PRB of the first frequency hop is equal to the PRB of the second frequency hop. In addition, TD-OCC may be applied to the PUCCH that transmits the HARQ-ACK corresponding to Msg.4 or Msg.B. A smaller SF can improve the ability to handle UEs with high moving speeds. In addition, the probability of base sequence index collision is reduced, so that the ability to handle inter-cell interference can be improved.

[0068] The frequency hop index in a slot is n hop If n = 0,1, frequency hopping is disabled. hop When using only base sequences with n = 0 and frequency hopping is enabled, hop = 0, 1 may use different base sequences.

[0069] In addition, the case where frequency hopping is disabled and the PRB of the first hop and the PRB of the second hop are the same may be supported.

[0070] Here, sequences between different base sequence indexes are not uncorrelated. Figure 17 is a diagram showing an example of applying base sequence hopping and frequency hopping to PUCCH transmission. As shown in Figure 17, in a certain slot #n, sequence #m of UE #1 0 The resource to which the UE#2 applies and sequence #m 1 The resources to which they apply may overlap.

[0071] FIG. 18 is a diagram showing cross-correlation between base sequence indexes. FIG. 18 is a diagram showing cross-correlation between different base sequence indexes in each sequence length from 1 PRB to 9 PRB in LTE. When PF0 or PF1, i.e., the number of PRBs is 1, the cross-correlation at CCDF=5% is as high as about 0.5. Therefore, when a PUCCH resource with frequency hopping disabled and a PUCCH resource with frequency hopping enabled overlap, a certain correlation and interference occurs regardless of whether the CS indexes are equal or not, resulting in performance degradation. On the other hand, different CS indexes in the same base sequence index are uncorrelated (cross-correlation=0). However, when frequency selectivity occurs within the sequence length, the CS indexes also show cross-correlation.

[0072] 19 is a diagram showing an example of applying base sequence hopping to PUCCH transmission in an embodiment of the present invention. When a UE for which any one of the above conditions 1) to 4) is satisfied is notified of frequency hopping being disabled by a higher layer (such as RRC, SIB, or MAC-CE) or DCI (such as PRI (PUCCH resource indicator), CCE index), the UE may execute an operation notified of "frequency hopping being enabled and the PRB index of the first hop is equal to the PRB index of the second hop."

[0073] For example, as shown in FIG. 19, the first floor (number of PUCCH symbols / 2) symbols of the PUCCH symbols are n hop = 0 as the base sequence (in Figure 19, sequence #m 0 ) is generated, and the latter floor(number of PUCCH symbols / 2) symbols are n hop =1 as the base sequence (in Figure 19, sequence #m 1 ) may be generated. Note that TD-OCC may or may not be applied.

[0074] Furthermore, as shown in Figure 19, when the second hop of the PUCCH resources of UE#1 and UE#2 overlap, different CS indexes or different TD-OCC indexes may be applied to make the resources orthogonal. This operation may be applied to either PF0 or PF1.

[0075] In the existing specifications, one of 16 PUCCH resources corresponding to Msg.4 or Msg.B is selected by DCI (PRI and CCE indexes). Therefore, up to 16 UEs can be multiplexed in the same UL slot.

[0076] By instructing different DCIs (PRI and CCE indexes) and setting different PUCCH resources (PRB indexes or CS indexes) to the RedCap UE and the legacy UE, the PUCCH resources of the RedCap UE and the PUCCH resources of the legacy UE can be made orthogonal to each other.

[0077] Fig. 20 is a diagram showing an example (8) of resources for transmitting PUCCH in an embodiment of the present invention. Fig. 21 is a diagram showing an example (9) of resources for transmitting PUCCH in an embodiment of the present invention. When a UE for which any one of the above conditions 1) to 4) is satisfied is notified of frequency hopping disable by a higher layer (RRC, SIB, MAC-CE, etc.) or DCI (PRI (PUCCH resource indicator), CCE index, etc.), as shown in Fig. 20, when hopping direction=0, a value indicated as a UE-specific PRB offset may be used to apply a UE-specific PRB offset from the lower end of a UL-initial BWP, or when hopping direction=1, a UE-specific PRB offset may be applied from the upper end of a UL-initial BWP.

[0078] In addition, when a UE for which any of the above conditions 1) to 4) is satisfied is notified of disabled frequency hopping by a higher layer (RRC, SIB, or MAC-CE, etc.) or DCI (PRI, CCE index, etc.), as shown in FIG. 21, when hopping direction = 0, the UE-specific PRB offset may use the indicated value and apply the UE-specific PRB offset from the lower end of the separated UL-initial BWP supported by RedCapUE, and when hopping direction = 1, the UE-specific PRB offset may be applied from the upper end of the separated UL-initial BWP supported by RedCapUE.

[0079] The name of the "hopping direction" may be another name, and the association between hopping direction=0 and hopping direction=1 and the upper end and lower end of the UL-BWP to which the UE-specific offset is applied may be reversed from that in Fig. 19 and Fig. 20. That is, hopping direction=0 may correspond to the upper end of the UL-BWP to which the UE-specific offset is applied, and hopping direction=1 may correspond to the lower end of the UL-BWP to which the UE-specific offset is applied. Information indicating whether the UE-specific PRB index is applied to the lower end or the upper end of the UL-BWP when frequency hopping is disabled to determine the PUCCH resource may be notified from base station 10 to terminal 20 by the PRI field and the CCE index.

[0080] By operating as described above, terminal 20 can appropriately control PUCCH resources when frequency hopping is disabled. Also, it is possible to prevent the same resource from being specified in hopping direction=0 and hopping direction=1.

[0081] In addition, the embodiment of the present invention may be limited to UEs that have reported the UE capabilities shown in 1)-4) below to the network.

[0082] 1) UE capabilities indicating whether RedCap is supported 2) UE capability indicating whether RedCap is supported in RRC idle / inactive state 3) UE capability indicating whether or not to support PUCCH for transmitting HARQ-ACK corresponding to Msg. 4 or Msg. B 4) Bandwidth of the initial UL-BWP for RedCap

[0083] It should be noted that the embodiments of the present invention may also be applied when configured or indicated by higher layer signaling (eg, RRC, SIB, MAC-CE).

[0084] The above embodiment enables efficient configuration of orthogonal PUCCH resources for both RedCap UEs and normal UEs.

[0085] That is, in a wireless communication system, terminals with reduced functionality and normal terminals can efficiently coexist.

[0086] (Device configuration) Next, a functional configuration example of the base station 10 and the terminal 20 that execute the processes and operations described above will be described. The base station 10 and the terminal 20 include functions for executing the above-mentioned embodiments. However, the base station 10 and the terminal 20 may each include only one of the functions of the embodiments.

[0087] <Base station 10> Fig. 22 is a diagram showing an example of the functional configuration of the base station 10. As shown in Fig. 22, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in Fig. 22 is merely an example. As long as the operation according to the embodiment of the present invention can be executed, the functional divisions and the names of the functional units may be any. The transmitting unit 110 and the receiving unit 120 may be called a communication unit.

[0088] The transmitting unit 110 has a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly. The receiving unit 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of a higher layer from the received signals. The transmitting unit 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, DL data, and the like to the terminal 20. The transmitting unit 110 also transmits setting information and the like described in the embodiment.

[0089] The setting unit 130 stores in a storage device setting information that is set in advance and various setting information to be transmitted to the terminal 20, and reads out the information from the storage device as necessary. The control unit 140 performs, for example, resource allocation and overall control of the base station 10. Note that the functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120. Furthermore, the transmitting unit 110 and the receiving unit 120 may be called a transmitter and a receiver, respectively.

[0090] <Terminal 20> Fig. 23 is a diagram showing an example of the functional configuration of the terminal 20. As shown in Fig. 23, the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in Fig. 23 is merely an example. As long as the operation related to the embodiment of the present invention can be executed, the names of the functional divisions and the functional units may be any. The transmitting unit 210 and the receiving unit 220 may be called a communication unit.

[0091] The transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiver 220 receives various signals wirelessly and acquires a higher layer signal from the received physical layer signal. The transmitter 210 also transmits HARQ-ACK, and the receiver 220 receives the setting information and the like described in the embodiment.

[0092] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220 in a storage device, and reads it out from the storage device as necessary. The setting unit 230 also stores setting information that is set in advance. The control unit 240 performs control of the entire terminal 20, etc. Note that a functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and a functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220. Also, the transmitting unit 210 and the receiving unit 220 may be called a transmitter and a receiver, respectively.

[0093] (Hardware configuration) The block diagrams (FIGS. 22 and 23) 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 of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically combined, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (e.g., using wires, wirelessly, etc.) and these multiple devices. The functional blocks may be realized by combining the one device or the multiple devices with software.

[0094] Functions include, but are not limited to, judgment, determination, judgment, 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 the function of transmission is called a transmitting unit or a transmitter. In either case, as described above, there is no particular limitation on the method of realization.

[0095] For example, the base station 10, the terminal 20, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 24 is a diagram showing an example of a hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The above-mentioned base station 10 and the terminal 20 may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0096] In the following description, the term "apparatus" can be interpreted as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0097] Each function in the base station 10 and the terminal 20 is realized by loading a specific software (program) onto hardware such as a processor 1001, a memory device 1002, etc., so that the processor 1001 performs calculations, controls communications by the communication device 1004, and controls at least one of reading and writing of data in the memory device 1002 and the auxiliary memory device 1003.

[0098] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0099] Moreover, the processor 1001 reads out a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to the program. As the program, a program that causes a computer to execute at least a part of the operations described in the above-mentioned embodiment is used. For example, the control unit 140 of the base station 10 shown in FIG. 22 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Also, for example, the control unit 240 of the terminal 20 shown in FIG. 23 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-mentioned various processes have been described as being executed by one processor 1001, they may be executed by two or more processors 1001 simultaneously or sequentially. The processor 1001 may be implemented by one or more chips. The program may be transmitted from a network via a telecommunication line.

[0100] The storage device 1002 is a computer-readable recording medium, and may be configured by at least one of, for example, a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), a Random Access Memory (RAM), etc. The storage device 1002 may also be called a register, a cache, a main memory (primary storage device), etc. The storage device 1002 can store a program (program code), software modules, etc. that are executable to implement a communication method according to an embodiment of the present disclosure.

[0101] The auxiliary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (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. The above-mentioned storage medium may be, for example, a database, a server, or other suitable medium including at least one of the storage device 1002 and the auxiliary storage device 1003.

[0102] The communication device 1004 is hardware (transmission and reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also called, 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., in order to realize at least one of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). For example, a transmission and reception antenna, an amplifier unit, a transmission and reception unit, a transmission line interface, etc. may be realized by the communication device 1004. The transmission and reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated from each other.

[0103] The input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs output to the outside. The input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).

[0104] In addition, each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0105] Furthermore, the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc., and some or all of the functional blocks may be realized by the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0106] Fig. 25 shows a configuration example of a vehicle 2001. As shown in Fig. 25, 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.

[0107] The driving 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 handlebar), 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 a user.

[0108] 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 be called an ECU (Electronic Control Unit).

[0109] The signals from the various sensors 2021-2029 include a current signal from a current sensor 2021 that senses the motor current, a front and rear wheel rotation speed signal acquired by a rotation speed sensor 2022, a front and rear wheel air pressure signal acquired by an air pressure sensor 2023, a vehicle speed signal acquired by a vehicle speed sensor 2024, an acceleration signal acquired by an acceleration sensor 2025, an accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, a brake pedal depression amount signal acquired by a brake pedal sensor 2026, a shift lever operation signal acquired by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028.

[0110] The information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 2012 uses information acquired from an external device via the communication module 2013, etc., to provide various multimedia information and multimedia services to the passengers of the vehicle 2001.

[0111] The driving assistance system unit 2030 is composed of various devices for providing functions for preventing accidents and reducing the driving load of the driver, such as a millimeter wave radar, a LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high definition (HD) map, autonomous vehicle (AV) map, etc.), a gyro system (e.g., an IMU (Inertial Measurement Unit), an INS (Inertial Navigation System), etc.), an AI (Artificial Intelligence) chip, and an AI processor, and one or more ECUs for controlling these devices. In addition, the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize a driving assistance function or an autonomous driving function.

[0112] 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 between the driving unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axle 2009, the microprocessor 2031 and the memory (ROM, RAM) 2032 in the electronic control unit 2010, and the sensors 2021 to 29, which are provided in the vehicle 2001.

[0113] 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.

[0114] The communication module 2013 transmits, via wireless communication, to an external device, a current signal from the current sensor input to the electronic control unit 2010. The communication module 2013 also transmits, via wireless communication, to an external device, a rotation speed signal of the front wheels and the rear wheels acquired by a rotation speed sensor 2022, an air pressure signal of the front wheels and the rear wheels acquired by an air pressure sensor 2023, a vehicle speed signal acquired by a vehicle speed sensor 2024, an acceleration signal acquired by an acceleration sensor 2025, an accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, a brake pedal depression amount signal acquired by a brake pedal sensor 2026, a shift lever operation signal acquired by a shift lever sensor 2027, a detection signal for detecting an obstacle, a vehicle, a pedestrian, or the like acquired by an object detection sensor 2028, and the like, which are input to the electronic control unit 2010.

[0115] The communication module 2013 receives various information (traffic information, signal information, vehicle distance information, etc.) transmitted from an external device, and displays it on an information service unit 2012 provided in the vehicle 2001. The communication module 2013 also stores the various information received from the external device in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.

[0116] (Summary of the embodiment) As described above, according to an embodiment of the present invention, there is provided a terminal having a receiving unit that receives settings related to an uplink control channel from a base station, a control unit that determines resources for the uplink control channel based on the settings, and a transmitting unit that transmits the uplink control channel to the base station in the resources, wherein when the settings indicate that frequency hopping is disabled, the control unit sets a base sequence to be applied to a first half of the resource and a base sequence to be applied to a second half of the resource to different base sequences, and determines the resources different from those used by a UE that is not a UE with reduced functionality.

[0117] With the above configuration, it is possible to efficiently configure orthogonal PUCCH resources for both RedCap UE and normal UE. That is, it is possible to efficiently allow terminals with reduced functionality and normal terminals to coexist in a wireless communication system.

[0118] The different resources may be applied with a cyclic shift value different from a cyclic shift value used by a UE that is not a reduced functionality UE. This configuration allows efficient configuration of orthogonal PUCCH resources for both RedCap UE and normal UE.

[0119] The different resources may be applied with a Time Domain-Orthogonal Cover Code (TD-OCC). This configuration allows efficient configuration of orthogonal PUCCH resources for both RedCap UE and normal UE.

[0120] The transmitting unit may notify the base station that the UE is a UE with reduced functionality during a random access procedure. This configuration makes it possible to efficiently configure orthogonal PUCCH resources for both RedCap UE and normal UE.

[0121] The transmitting unit may not transmit the later hops of the resource to the base station. This configuration can efficiently configure orthogonal PUCCH resources for both RedCap UE and normal UE.

[0122] Also, according to an embodiment of the present invention, there is provided a communication method in which a terminal executes a receiving procedure for receiving settings related to an uplink control channel from a base station, a control procedure for determining resources for the uplink control channel based on the settings, a transmitting procedure for transmitting the uplink control channel to the base station in the resources, and, if the settings indicate that frequency hopping is disabled, a base sequence to be applied to a first half of the resource and a base sequence to be applied to a second half of the resource are different base sequences, and the resources different from those used by a UE that is not a UE with reduced functionality are determined.

[0123] With the above configuration, it is possible to efficiently configure orthogonal PUCCH resources for both RedCap UE and normal UE. That is, it is possible to efficiently allow terminals with reduced functionality and normal terminals to coexist in a wireless communication system.

[0124] (Supplementary embodiment) Although the embodiment of the present invention has been described above, the disclosed invention is not limited to such an embodiment, and those skilled in the art will understand various modifications, modifications, alternatives, replacements, and the like. Although the description has been given using specific numerical examples to facilitate understanding of the invention, unless otherwise specified, those numerical values ​​are merely examples and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention, and matters described in two or more items may be used in combination as necessary, and matters described in one item may be applied to matters described in another item (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 parts. The operations of multiple functional units may be physically performed by one part, or the operations of one functional unit may be physically performed by multiple parts. The order of the processing procedures described in the embodiment may be changed as long as there is no contradiction. For convenience of the processing description, the base station 10 and the terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof. The software operated by the processor possessed by the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor possessed by the terminal 20 in accordance with an embodiment of the present invention may each be stored in a 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.

[0125] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination of these. Furthermore, the RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.

[0126] Each aspect / embodiment described in the present disclosure may be implemented using a standard such as 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 point)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), and other appropriate systems, and next-generation systems that are expanded, modified, created, or defined based on these systems. In addition, the present invention may be applied to a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A and 5G, etc.).

[0127] The order of the steps, sequences, flow charts, etc. of each aspect / embodiment described herein may be changed 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.

[0128] In this specification, a specific operation performed by the base station 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and other network nodes other than the base station 10 (e.g., MME or 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 10, the other network node may be a combination of multiple other network nodes (e.g., MME and S-GW).

[0129] The information or signals described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0130] The input and output information may be stored in a specific location (e.g., memory) or may be managed using a management table. The input and output information may be overwritten, updated, or added to. The output information may be deleted. The input information may be transmitted to another device.

[0131] In the present disclosure, the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0132] 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.

[0133] Additionally, software, instructions, information, etc. may be transmitted or received over a transmission medium. For example, if the software is transmitted from a website, server, or other remote source using wired and / or wireless technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave, etc.), then these wired and / or wireless technologies are included within the definition of transmission media.

[0134] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0135] In addition, the terms described in this disclosure and the 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). Also, a signal may be a message. Also, a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.

[0136] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0137] In addition, the information, parameters, etc. described in the present disclosure may be represented using absolute values, may be represented using relative values ​​from a predetermined value, or may be represented using other corresponding information. For example, a radio resource may be indicated by an index.

[0138] The names used for the above-mentioned parameters are not limiting in any way. Moreover, the formulas 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 limiting in any way.

[0139] In the present disclosure, terms such as "base station (BS)", "radio base station", "base station", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission / reception point", "cell", "sector", "cell group", "carrier", "component carrier", etc. may be used interchangeably. A base station may also be referred to by terms such as a macro cell, a small cell, a femto cell, a pico cell, etc.

[0140] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the entire coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or a base station subsystem that provides communication services in this coverage.

[0141] In this disclosure, the terms "Mobile Station (MS)", "user terminal", "User Equipment (UE)", "terminal", etc. may be used interchangeably.

[0142] 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.

[0143] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc. At least one of the base station and the mobile station may be a device mounted on a moving body, the moving body itself, etc. The moving body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may include a device that does not necessarily move during communication operation. 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.

[0144] Furthermore, the base station in the present disclosure may be read as a user terminal. For example, each aspect / embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, an uplink channel, a downlink channel, etc. may be read as a side channel.

[0145] Similarly, the user terminal in the present disclosure may be read as a base station. In this case, the base station may be configured to have the functions of the above-mentioned user terminal.

[0146] 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, search, inquiry (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in a memory), and the like. In addition, "judgment" and "decision" can include considering resolving, selecting, choosing, establishing, comparing, etc., to be a "judgment" or "decision." In other words, "judgment" and "decision" can include considering some action to be a "judgment" or "decision." In addition, "judgment" can be interpreted as "assuming," "expecting," "considering," etc.

[0147] 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 at least one of one or more wires, cables, and 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.

[0148] The reference signal may be abbreviated as RS (Reference Signal) and may be called a pilot depending on the applicable standard.

[0149] 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."

[0150] Any reference to an element using a designation 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.

[0151] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0152] 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." Further, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0153] 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.

[0154] The numerology may be communication parameters that apply to the transmission and / or reception of a signal or channel, such as, for example, at least one of a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), a number of symbols per TTI, a radio frame structure, a particular filtering operation that the transceiver performs in the frequency domain, a particular windowing operation that the transceiver performs in the time domain, etc.

[0155] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol, a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain. A slot may be a time unit based on numerology.

[0156] A slot may include multiple minislots. Each minislot may be composed of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may be composed 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.

[0157] A radio frame, a subframe, a slot, a minislot, and a symbol each represent a time unit for transmitting a signal. The radio frame, the subframe, the slot, the minislot, and the symbol may each be referred to by a different name.

[0158] 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 the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit expressing the TTI may be called a slot, a minislot, or the like, instead of a subframe.

[0159] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units. Note that the definition of TTI is not limited to this.

[0160] 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) in which a transport block, a code block, a code word, etc. are actually mapped may be shorter than the TTI.

[0161] In addition, when one slot or one minislot is called TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit of scheduling. Also, the number of slots (minislots) constituting the minimum time unit of scheduling may be controlled.

[0162] A TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, etc.

[0163] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length exceeding 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0164] 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 the numerology, for example, 12. The number of subcarriers included in an RB may be determined based on the numerology.

[0165] In addition, the time domain of the RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length. Each of one TTI, one subframe, etc. may be composed of one or more resource blocks.

[0166] Note that one or more RBs may be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, or the like.

[0167] 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.

[0168] 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 numerology on a carrier, where the common RBs may be identified by an index of the RBs relative to a common reference point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0169] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). For the terminal 20, one or more BWPs may be set within one carrier.

[0170] At least one of the configured BWPs may be active, and the terminal 20 may not expect to transmit or receive a predetermined signal / channel outside the active BWP. Note that the terms "cell", "carrier", and the like in this disclosure may be replaced with "BWP".

[0171] The above-mentioned structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0172] In this disclosure, where articles have been added due to translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0173] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0174] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched according to execution. In addition, notification of predetermined information (e.g., notification that "X is the case") is not limited to being done explicitly, but may be done implicitly (e.g., not notifying the predetermined information).

[0175] 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 in the present disclosure. 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. (Section 1) A receiving unit that receives a setting related to an uplink control channel from a base station; a control unit that determines resources for an uplink control channel based on the setting; a transmitter for transmitting an uplink control channel to the base station in the resource; When the setting indicates that frequency hopping is disabled, the control unit determines a base sequence to be applied to the first half of the resource and a base sequence to be applied to the second half of the resource as different base sequences, and determines the resource as different from the resource used by a UE that is not a UE with reduced functionality. (Section 2) The terminal according to claim 1, wherein a cyclic shift value different from a cyclic shift value used by a UE that is not a UE (User Equipment) with reduced functionality is applied to the different resources. (Section 3) The terminal according to claim 1, wherein a Time Domain - Orthogonal Cover Code (TD-OCC) is applied to the different resources. (Section 4) The terminal according to claim 1, wherein the transmitting unit notifies the base station during a random access procedure that the UE is a UE with reduced functionality. (Section 5) 2. The terminal of claim 1, wherein the transmitter does not transmit subsequent hops of the resource to the base station. (Section 6) A receiving procedure for receiving a setting related to an uplink control channel from a base station; A control procedure for determining resources for an uplink control channel based on the configuration; a transmission step of transmitting an uplink control channel to the base station in the resource; and if the setting indicates that frequency hopping is disabled, a base sequence to be applied to a first half of the resource and a base sequence to be applied to a second half of the resource are different base sequences, and the terminal executes a procedure of determining the resource different from a resource used by a UE that is not a UE with reduced functionality. [Explanation of symbols]

[0176] 10 base station 110 Transmitter 120 Receiving unit 130 Setting section 140 Control section 20 Terminals 210 Transmitter 220 Receiving unit 230 Setting section 240 Control Unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication equipment 1005 Input Device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering section 2004 Accelerator pedal 2005 Brake pedal 2006 Shift Lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic Control Unit 2012 Information Services Department 2013 Communication Module 2021 Current Sensor 2022 RPM Sensor 2023 Air Pressure Sensor 2024 Vehicle speed sensor 2025 Acceleration Sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving Support Systems Department 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

Claims

1. a receiving unit for receiving system information from a base station; a control unit that determines an uplink control channel resource different from an uplink control channel resource used by a UE that is not a UE with reduced functions, when an initial UL-BWP (Uplink Bandwidth part) for a UE (User Equipment) with reduced functions is set by the system information, when the UL-BWP is set within a maximum bandwidth of the UE with reduced functions by the system information, and when disablement of frequency hopping is set by the system information; A terminal having a transmitter that notifies the base station during a random access procedure that the UE is a UE with reduced functionality, and transmits to the base station an uplink control channel including a HARQ-ACK corresponding to a notification from the base station after the notification in the random access procedure using resources of the different uplink control channel.

2. The terminal according to claim 1, wherein the control unit determines resources of the different uplink control channels by adding a PRB (Physical resource block) offset set by RRC (Radio Resource Control) signaling to a PRB (Physical resource block) offset used by a UE that is not a UE with reduced functionality.

3. The terminal according to claim 1, wherein the transmission unit notifies the base station that the UE is a UE with reduced functionality in Msg. 1 or Msg. A in the random access procedure, and transmits an uplink control channel including a HARQ-ACK corresponding to Msg. 4 or Msg. B in the random access procedure to the base station using resources of the different uplink control channels.

4. A transmission unit that transmits system information to a terminal; a control unit that determines an uplink control channel resource different from an uplink control channel resource used by a UE that is not a UE with reduced functions, when an initial UL-BWP (Uplink Bandwidth part) for a UE (User Equipment) with reduced functions is set by the system information, when the UL-BWP is set within a maximum bandwidth of the UE with reduced functions by the system information, and when disablement of frequency hopping is set by the system information; A base station having a receiving unit that receives a notification from the terminal during a random access procedure that the terminal is a UE with reduced functionality, and receives from the terminal an uplink control channel including a HARQ-ACK corresponding to a notification from the base station after the notification in the random access procedure using resources of the different uplink control channel.

5. A communication system having a base station and a terminal, The base station, A transmitting unit that transmits system information to the terminal; a control unit that determines an uplink control channel resource different from an uplink control channel resource used by a UE that is not a UE with reduced functions, when an initial UL-BWP (Uplink Bandwidth part) for a UE (User Equipment) with reduced functions is set by the system information, when the UL-BWP is set within a maximum bandwidth of the UE with reduced functions by the system information, and when disablement of frequency hopping is set by the system information; A receiving unit that receives, during a random access procedure, from the terminal a notification that the terminal is a UE with reduced functionality, and receives from the terminal an uplink control channel including a HARQ-ACK corresponding to a notification from the base station after the notification in the random access procedure, using a resource of the different uplink control channel; The terminal includes: a receiving unit for receiving the system information from the base station; a control unit that determines an uplink control channel resource different from an uplink control channel resource used by a UE other than the UE with reduced functions when an initial UL-BWP for the UE with reduced functions is set by the system information, when the UL-BWP is set within a maximum bandwidth of the UE with reduced functions by the system information, and when disablement of frequency hopping is set by the system information; A communication system having a transmitter that notifies the base station during a random access procedure that the UE is a UE with reduced functionality, and transmits to the base station an uplink control channel including a HARQ-ACK corresponding to a notification from the base station after the notification in the random access procedure using resources of the different uplink control channel.

6. receiving system information from a base station; a procedure for determining an uplink control channel resource different from an uplink control channel resource used by a UE other than the UE with reduced functionality when an initial UL-BWP (Uplink Bandwidth part) for a UE (User Equipment) with reduced functionality is set by the system information, when the UL-BWP is set within a maximum bandwidth of the UE with reduced functionality by the system information, and when disablement of frequency hopping is set by the system information; a procedure of notifying the base station during a random access procedure that the UE is a UE with reduced functionality, and transmitting to the base station an uplink control channel including a HARQ-ACK corresponding to a notification from the base station after the notification in the random access procedure, using resources of the different uplink control channel.

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