CN116569628A - Terminal, base station and communication method - Google Patents

Abstract

The terminal has: a transmission unit that performs repeated transmission of a physical uplink shared channel to a base station; and a control unit that applies frequency hopping between a plurality of component carriers to the repeated transmission, wherein the control unit determines the plurality of component carriers based on signaling from the base station or the type of the physical uplink shared channel.

Description

Terminal, base station and communication method

Technical Field

The present invention relates to a terminal, a base station, and a communication method in a wireless communication system.

Background

In 3GPP (3 rd Generation Partnership Project: third generation partnership project), in order to achieve further increase in system capacity, further increase in data transmission speed, further decrease in delay in a Radio section, and the like, a Radio communication system called 5G or NR (New Radio: new air interface) (hereinafter, this Radio communication system is referred to as "NR") has been studied. In 5G, various wireless technologies and network architectures (architecture) have been studied in order to meet the requirement that throughput (throughput) of 10Gbps or more and delay in a wireless section be 1ms or less (for example, non-patent document 1).

In addition, for example, in NR, when a terminal autonomously selects a resource without using SR (Scheduling Request: scheduling request), repeated transmission is supported in order to improve reliability and delay performance (for example, non-patent document 2).

Further, as a next-generation wireless communication system of 5G, 6G research is being started, and it is expected to realize wireless quality exceeding 5G. For example, in 6G, studies have been made to achieve further increase in capacity, use of a new frequency band, further reduction in delay, further high reliability, expansion of coverage in a new area (high altitude, sea, universe), and the like (for example, non-patent literature 3).

Prior art literature

Non-patent literature

Non-patent document 1:3GPP TS 38.300V16.3.0 (2020-09)

Non-patent document 2:3GPP TS 38.214V16.3.0 (2020-09)

Non-patent document 3: NTT rate コ is configured to pay a strain of a strain 5G, and a strain 6G (NTT is a family mole, white paper 5G and 6G) (2020-01)

Disclosure of Invention

Problems to be solved by the invention

Regarding repeated transmission, for example, when more terminals autonomously select resources than ever, it is assumed that the collision probability of uplink data increases.

The present invention has been made in view of the above circumstances, and an object of the present invention is to improve reliability in a case of repeated transmission in a wireless communication system.

Means for solving the problems

According to the disclosed technology, there is provided a terminal having: a transmission unit that performs repeated transmission of a physical uplink shared channel to a base station; and a control unit that applies frequency hopping between a plurality of component carriers to the repeated transmission, wherein the control unit determines the plurality of component carriers based on signaling from the base station or the type of the physical uplink shared channel.

Effects of the invention

According to the disclosed technology, a technique is provided that improves reliability in the case of repeated transmissions in a wireless communication system.

Drawings

Fig. 1 is a diagram for explaining an example (1) of a wireless communication system according to an embodiment of the present invention.

Fig. 2 is a diagram for explaining an example (2) of the wireless communication system in the embodiment of the present invention.

Fig. 3 is a timing chart for explaining an example of a transmission operation in the embodiment of the present invention.

Fig. 4 is a diagram showing example (1) of repeated transmission in the embodiment of the present invention.

Fig. 5 is a diagram showing example (2) of repeated transmission in the embodiment of the present invention.

Fig. 6 is a diagram showing example (3) of repeated transmission in the embodiment of the present invention.

Fig. 7 is a diagram showing an example of the functional configuration of the base station 10 according to the embodiment of the present invention.

Fig. 8 is a diagram showing an example of the functional configuration of the terminal 20 according to the embodiment of the present invention.

Fig. 9 is a diagram showing an example of a hardware configuration of the base station 10 or the terminal 20 according to the embodiment of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiments described below are merely examples, and the embodiments to which the present invention is applied are not limited to the following embodiments.

When the wireless communication system of the embodiment of the present invention operates, the prior art can be suitably used. The prior art is for example, but not limited to, existing NR or LTE.

Fig. 1 is a diagram for explaining an example (1) of a wireless communication system according to 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. In fig. 1, one base station 10 and one terminal 20 are shown, but this is only an example, and a plurality of base stations and one terminal 20 may be provided.

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 the wireless signal are defined in a time domain, which may be defined by the number of OFDM symbols, and a frequency domain, which may be defined by the number of subcarriers or the number of resource blocks. Further, the TTI (Transmission Time Interval: transmission time interval) in the time domain may be a slot, and the TTI may be a subframe.

The base station 10 can perform carrier aggregation for bundling a plurality of cells (a plurality of CCs (component carriers)) and communicating with the terminal 20. In carrier aggregation, 1 PCell (primary cell) and 1 or more scells (secondary cells) are used.

The base station 10 transmits a synchronization signal, system information, and the like to the terminal 20. The synchronization signals are, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, through NR-PBCH or PDSCH, also called broadcast information. As shown in fig. 1, a base station 10 transmits control signals or data to a terminal 20 through DL (Downlink: uplink) and receives control signals or data from the terminal 20 through UL (Uplink). Here, the content transmitted through a control channel such as PUCCH and PDCCH is referred to as a control signal, and the content transmitted through a shared channel such as PUSCH and PDSCH is referred to as data, but such a description is merely an example.

The terminal 20 is a communication device having a wireless communication function, such as a smart phone, a mobile phone, a tablet computer, a wearable terminal, and a communication module for M2M (Machine-to-Machine) communication. As shown in fig. 1, the terminal 20 receives a control signal or data from the base station 10 through DL and transmits the control signal or data to the base station 10 through UL, thereby utilizing various communication services provided by a wireless communication system. The terminal 20 may be referred to as a UE, and the base station 10 may be referred to as a gNB.

The terminal 20 can perform carrier aggregation for bundling a plurality of cells (a plurality of CCs (Component Carrier: component carriers)) and communicating with the base station 10. In carrier aggregation, 1 PCell (primary cell) and 1 or more scells (secondary cells) are used. In addition, PUCCH-SCell having PUCCH may be used.

Fig. 2 is a diagram for explaining an example (2) of the wireless communication system in the embodiment of the present invention. Fig. 2 shows a configuration example of a wireless communication system in the case of performing DC (Dual connectivity: dual connection). As shown in fig. 2, there is a base station 10A as an MN (Master Node: master Node) and a base station 10B as an SN (Secondary Node). The base stations 10A and 10B are connected to a core network, respectively. The terminal 20 can communicate with both the base station 10A and the base station 10B.

The cell group provided by the base station 10A as MN is referred to as MCG (Master Cell Group: primary cell group), and the cell group provided by the base station 10B as SN is referred to as SCG (Secondary Cell Group: secondary cell group). In DC, the MCG is composed of 1 PCell and 1 or more scells, and the SCG is composed of 1 PSCell (Primary SCG Cell) and 1 or more scells.

The DC may be a communication method using 2 communication standards, or may be any combination of communication standards. For example, the combination may be any one of NR and 6G standards, LTE and 6G standards. The DC may be a communication method using 3 or more communication standards, or may be referred to by a different name from the DC.

The processing operation in the present embodiment may be executed by the system configuration shown in fig. 1, may be executed by the system configuration shown in fig. 2, or may be executed by a system configuration other than these.

In NR version 15/16, the resources for transmitting UL data are allocated by the network according to SR (Scheduling Request) transmitted by the terminal 20 to the base station 10. Alternatively, the network performs resource setting (Configured grant) for enabling UL data transmission without SR to the terminal 20. Also, in 6G, it is studied that the terminal 20 autonomously selects resources. That is, UE-centric (UE-centric) transceiving is contemplated.

Here, as a scheduling mechanism that does not use SR, in NR version 15/16, PUSCH repetition transmission in consecutive slots or symbols and PUSCH frequency hopping in CCs are supported in order to ensure reliability. On the other hand, in 6G in the future, more terminals 20 may autonomously perform resource selection, and the collision probability of UL data is assumed to increase. In order to reduce the collision probability, for example, different CCs may be selected among the terminals 20, and wider frequency hopping, for example, inter-CC frequency hopping, may be applied.

Hereinafter, an extension of frequency hopping (FH: frequency Hopping) in PUSCH repetition transmission will be described.

Fig. 3 is a timing chart for explaining an example of a transmission operation in the embodiment of the present invention. In step S1, the base station 10 sets PUSCH repetition transmission for the terminal 20. When PUSCH repetition transmission is set, the terminal 20 may assume that a hopping pattern (Frequency Hopping pattern) is also set. For example, the PUSCH repetition transmission setting may include a hopping pattern. Alternatively, the hopping pattern may be specified in the specification in advance, or the hopping pattern may be determined by a setting other than PUSCH repetition transmission (for example, UL cell setting, UL-BWP setting, or the like). In step S1, the hopping pattern may be set for each CC or may be set commonly between CCs. In step S1, different PUSCH repetition transmission and/or hopping patterns may be set for the SR-based PUSCH and the non-SR-based PUSCH, or a common PUSCH repetition transmission and/or hopping pattern may be set.

In step S2, the base station 10 may transmit a notification to the terminal 20 to enable frequency hopping of PUSCH. The notification may be performed by signaling such as RRC (Radio Resource Control: radio resource Control), MAC-CE (Media Access Control-Control Element: medium access Control-Control Element), DCI (Downlink Control Information: downlink Control information), or the like. In addition, step S2 may not be executed, and for example, if a hopping pattern is set, the terminal 20 may assume that the hopping is effective.

In addition, step S1 and step S2 may not be executed, and the terminal 20 may start execution from step S3. That is, the terminal 20 may also autonomously start the application of frequency hopping. Alternatively, in step S1, PUSCH repetition transmission not including the hopping pattern may be set, and then step S3 may be executed.

In step S3, the terminal 20 may transmit a notification of performing PUSCH repetition transmission to the base station 10. For example, the terminal 20 may notify the base station 10 of which one of the hopping patterns specified in the usage specification. In addition to the frequency hopping pattern used, the terminal 20 may also notify the number of PUSCH repeated transmissions, or may notify the number of PUSCH repeated transmissions. In addition, when reserving PUSCH transmission resources in advance, the terminal 20 may notify the frequency hopping pattern, notify the base station 10 of the number of PUSCH repetition transmissions, or the like, in addition to notifying PUSCH repetition transmissions. Further, the terminal 20 may also transmit a notification of performing PUSCH repetition transmission to the base station 10 via a dedicated channel (e.g., a frequency hopping control channel (FH Control Channel)). In addition, in the case where the terminal 20 is notified of the hopping pattern in step S1, step S3 may not be executed.

In step S4, the terminal 20 applies the set hopping frequency to perform PUSCH repetition transmission.

Here, when performing PUSCH repetition transmission, the terminal 20 may assume frequency hopping among a plurality of CCs. For example, when a notification to enable frequency hopping of PUSCH is received in step S2, frequency hopping between a plurality of CCs can be assumed.

For example, regarding the switching of the number of CCs performing PUSCH frequency hopping, the terminal 20 may be performed according to signaling such as RRC, MAC-CE, or DCI. Further, regarding the switching of the number of CCs performing PUSCH hopping, the terminal 20 may also be performed in association with other signaling. For example, PUSCH hopping may be performed within 1CC in PUSCH transmission by SR, and PUSCH hopping may be performed between N (> 1) CCs in PUSCH transmission by non-SR.

Further, for example, the base station 10 may notify the terminal 20 of the CC for PUSCH transmission by RRC, MAC-CE, DCI, or the like. Alternatively, the terminal 20 may determine the CC for PUSCH transmission. For example, the terminal 20 may determine all CCs receiving the PDSCH as CCs transmitting the PUSCH, or may determine all activated CCs as CCs transmitting the PUSCH. The terminal 20 may acquire CC candidates from the base station 10 by signaling such as RRC, MAC-CE, or DCI. The CC candidates may be notified to the terminal 20 together with the priorities associated with the respective CC candidates, and the terminal 20 may determine to perform PUSCH transmission by U CCs having higher priorities among the CC candidates. U may be notified from the base station 10 through signaling such as RRC, MAC-CE, or DCI.

Further, the terminal 20 may decide whether PUSCH hopping between a plurality of CCs is valid or invalid according to the transmitted PUSCH type. For example, the type may correspond to an RA (Random Access) type, an SR type, and the like. For example, when PUSCH type X1 is an SR-based PUSCH and PUSCH type X2 is a non-SR-based PUSCH, PUSCH type X1 may invalidate frequency hopping between a plurality of CCs and PUSCH type X2 may validate frequency hopping between a plurality of CCs.

Further, the terminal 20 may consider PUSCH frequency hopping (enclosed in PUCCH groups) for each PUCCH group. That is, the terminal 20 may consider frequency hopping among a plurality of CCs corresponding to the PUCCH group. For example, the terminal 20 may consider PUSCH hopping (of the PUCCH group) for each PUCCH group, or PUSCH hopping not of the PUCCH group. For example, when PUSCH hopping is performed without being blocked in a PUCCH group, if there is a collision of CCs or radio resources used for PUSCH transmission between PUCCH groups, PUSCH transmission with a lower priority may be discarded (drop) based on a priority (for example, a priority related to the PUCCH group) or the like.

Furthermore, the terminal 20 may also envisage PUSCH hopping per TAG (Timing Advance Group: timing advance group) group (i.e. enclosed in TAG group). That is, the terminal 20 may also assume frequency hopping among a plurality of CCs corresponding to the TAG group.

The terminal 20 may also consider PUSCH hopping (i.e., enclosed in a cell group) for each cell group to which a plurality of CCs belong. That is, the terminal 20 may also assume frequency hopping among a plurality of CCs corresponding to a cell group.

By applying frequency hopping to PUSCH repetition transmission in this way, scheduling flexibility is improved by utilizing resources in the frequency domain of a wider band. In addition, in the case of PUSCH based on non-SR, the possibility of collision with resources used by other terminals 20 can be reduced.

Fig. 4 is a diagram showing example (1) of repeated transmission in the embodiment of the present invention. As shown in fig. 4, when PUSCH hopping transmission between a plurality of CCs is assumed, the terminal 20 may assume that PUSCH repetition transmission and/or hopping is set in units of RBs (Resource blocks) within 1 CC. For example, as setting of PUSCH repetition transmission, a start symbol, repetition length, and the like are set, and as setting of frequency hopping, a start RB, RB offset, and the like are set. In fig. 4, the following example is shown: repetition 1 and repetition 4 are frequency positions at the beginning, and repetition 2 and repetition 3 are frequency positions to which the offset of the frequency hopping is added. In fig. 4, the repetition transmission is shown in units of slots, but may be repeated in units of symbols within slots or between slots.

Fig. 5 is a diagram showing example (2) of repeated transmission in the embodiment of the present invention. As shown in fig. 5, when PUSCH hopping transmission between a plurality of CCs is assumed, the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of CCs is set. For example, as setting of PUSCH repetition transmission, a start symbol, repetition length, and the like are set, and as setting of frequency hopping, a start RB, CC offset, and the like are set. In fig. 5, the following example is shown: repetition 1 and repetition 4 are frequency positions at the beginning, and repetition 2 and repetition 3 are frequency positions to which the offset of the frequency hopping is added. In fig. 5, the repetition transmission is shown in units of slots, but may be repeated in units of symbols within slots or between slots.

Fig. 6 is a diagram showing example (3) of repeated transmission in the embodiment of the present invention. As shown in fig. 6, when PUSCH hopping transmission between a plurality of CCs is assumed, the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of RBs within 1CC and PUSCH repetition transmission and/or hopping in units of CCs are set. For example, a start symbol, a repetition length, and the like are set as PUSCH repetition transmission setting, and a start RB, an RB offset, a CC offset, and the like are set as hopping frequency setting. In fig. 6, the following example is shown: repetition 1 and repetition 4 are frequency positions at the beginning, and repetition 2 and repetition 3 are frequency positions to which the offset of the frequency hopping is added. In fig. 6, the repetition transmission is shown in units of slots, but may be repeated in units of symbols within slots or between slots.

The setting related to PUSCH repetition transmission and/or frequency hopping described above may be notified from the base station 10 to the terminal 20 by RRC, MAC-CE, DCI or other signaling. It is also conceivable that the terminal 20 updates only a part of the settings by MAC-CE, DCI, or the like.

The switching of the repetition transmission and frequency hopping shown in fig. 4, the repetition transmission and frequency hopping shown in fig. 5, and the repetition transmission and frequency hopping shown in fig. 6 can be notified from the base station 10 to the terminal 20 by signaling such as RRC, MAC-CE, or DCI. The switching of communication modes other than the repetition transmission and the frequency hopping described above may be notified from the base station 10 to the terminal 20 by signaling such as RRC, MAC-CE, or DCI.

The terminal 20 may assume that PUSCH hopping transmission between a plurality of CCs in inter-band CA (Carrier Aggregation: carrier aggregation) is assumed, as in options 1) to 7) shown below.

Option 1) the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of RBs within 1CC is set when PUSCH hopping transmission between a plurality of CCs in the inter-band CA (Carrier Aggregation) is assumed. For example, as setting of PUSCH repetition transmission, a start symbol, repetition length, and the like are set, and as setting of frequency hopping, a start RB, RB offset, and the like are set.

Option 2) the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of CCs is set when PUSCH hopping transmission between a plurality of CCs in inter-band CA is assumed. For example, as setting of PUSCH repetition transmission, a start symbol, repetition length, and the like are set, and as setting of frequency hopping, a start RB, CC offset, and the like are set.

Option 3) the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of a band is set when PUSCH hopping transmission between a plurality of CCs in inter-band CA is assumed. For example, as setting of PUSCH repetition transmission, a start symbol, repetition length, and the like are set, and as setting of frequency hopping, a start RB, band offset, and the like are set.

Option 4) the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of RBs within 1CC, PUSCH repetition transmission and/or hopping in units of CCs are set when PUSCH hopping transmission between a plurality of CCs in inter-band CA is assumed. For example, a start symbol, a repetition length, and the like are set as PUSCH repetition transmission setting, and a start RB, an RB offset, a CC offset, and the like are set as hopping frequency setting.

Option 5) the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of RBs within 1CC, and PUSCH repetition transmission and/or hopping in units of bands are set when PUSCH hopping transmission between a plurality of CCs in inter-band CA is assumed. For example, as setting of PUSCH repetition transmission, a start symbol, repetition length, and the like are set, and as setting of frequency hopping, a start RB, RB offset, band offset, and the like are set.

Option 6) the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of CCs, PUSCH repetition transmission and/or hopping in units of bands are set when PUSCH hopping transmission between a plurality of CCs in inter-band CA is assumed. For example, as setting of PUSCH repetition transmission, a start symbol, repetition length, and the like are set, and as setting of frequency hopping, a start RB, CC offset, band offset, and the like are set.

Option 7) the terminal 20 may assume that PUSCH repetition transmission and/or hopping in units of RBs within 1CC, PUSCH repetition transmission and/or hopping in units of CCs, and PUSCH repetition transmission and/or hopping in units of bands are set when PUSCH hopping transmission between a plurality of CCs in inter-band CA is assumed. For example, a start symbol, a repetition length, and the like are set as PUSCH repetition transmission settings, and a start RB, an RB offset, a CC offset, a band offset, and the like are set as hopping frequency settings.

The handover according to the above options 1) to 7) may be notified from the base station 10 to the terminal 20 by signaling such as RRC, MAC-CE or DCI. The switching of the communication scheme other than the above-described options may be notified from the base station 10 to the terminal 20 by signaling such as RRC, MAC-CE, or DCI.

In the embodiment of the present invention, it is also conceivable to apply frequency hopping not only in PUSCH repetition transmission but also in PDSCH repetition transmission. The frequency hopping is a function of using different frequency resources for each predetermined unit in a certain transmission. For example, the repetition transmission and the frequency hopping described above may be applied to all channels or signals transmitted from the terminal 20, for example, PUCCH, SRS, RACH.

In embodiments of the present invention, not only repeated transmissions in consecutive slots or symbols can be envisaged, but also repeated transmissions in non-consecutive slots or symbols can be envisaged.

In the embodiment of the present invention, "non-SR based" may be replaced by "Configured Grant" or "Grant free" or the like. The "frequency hopping" may be replaced with "frequency multiplexing (Frequency multiplexing)", "FDM (Frequency division multiplexing: frequency division multiplexing)", "band bundling (Frequency bundling)", and "frequency repetition (Frequency repetition)". The "PUSCH" may be replaced with "UL data", "user data", or the like.

According to the above-described embodiment, the terminal 20 can improve reliability by applying the spread hopping at the time of repeated transmission.

That is, in the wireless communication system, reliability in the case of repeated transmission can be improved.

(device Structure)

Next, a functional configuration example of the base station 10 and the terminal 20 that execute the above-described processing and operation will be described. The base station 10 and the terminal 20 contain functions to perform the above-described embodiments. However, the base station 10 and the terminal 20 may each have only the functions of any of the embodiments.

< base station 10>

Fig. 7 is a diagram showing an example of the functional configuration of the base station 10. As shown in fig. 7, the base station 10 includes a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional structure shown in fig. 7 is merely an example. The names of the functional sections and the functional distinction may be arbitrary as long as the operations according to the embodiments of the present invention can be executed. The transmitting unit 110 and the receiving unit 120 may be referred to as communication units.

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

The setting unit 130 stores preset setting information and various setting information transmitted to the terminal 20 in a storage device, and reads the setting information from the storage device as necessary. The control unit 140 performs control of the entire base station 10 including resource allocation and frequency hopping, for example. The transmitting unit 110 may include a function unit related to signal transmission in the control unit 140, and the receiving unit 120 may include a function unit related to signal reception in the control unit 140. The transmitter 110 and the receiver 120 may be referred to as a transmitter and a receiver, respectively.

< terminal 20>

Fig. 8 is a diagram showing an example of the functional configuration of the terminal 20. As shown in fig. 8, the terminal 20 includes a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional structure shown in fig. 8 is merely an example. The names of the functional sections and the functional distinction may be arbitrary as long as the operations according to the embodiments of the present invention can be executed. The transmitting unit 210 and the receiving unit 220 may be referred to as communication units.

The transmitting unit 210 generates a transmission signal from the transmission data, and transmits the transmission signal wirelessly. The receiving unit 220 receives various signals wirelessly and acquires a higher layer signal from the received physical layer signal. The transmitter 210 transmits HARQ-ACK, and the receiver 220 receives the setting information and the like described in the embodiment.

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 out the setting information from the storage device as necessary. The setting unit 230 also stores preset setting information. The control unit 240 performs control of the entire terminal 20 including frequency hopping, and the like. The transmitting unit 210 may include a function unit related to signal transmission in the control unit 240, and the receiving unit 220 may include a function unit related to signal reception in the control unit 240. The transmitter 210 and the receiver 220 may be referred to as a transmitter and a receiver, respectively.

(hardware construction)

The block diagrams (fig. 7 and 8) used in the description of the above embodiment show blocks in units of functions. These functional blocks (structures) are realized by any combination of at least one of hardware and software. The implementation method of each functional block is not particularly limited. That is, each functional block may be realized by using one device physically or logically combined, or may be realized by directly or indirectly (for example, by using a wire, a wireless, or the like) connecting two or more devices physically or logically separated from each other, and using these plural devices. The functional blocks may also be implemented by combining software with the above-described device or devices.

Functionally, there are judgment, decision, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcast), notification (notification), communication (communication), forwarding (forwarding), configuration, reconfiguration (allocation), allocation (allocating, mapping), assignment (allocation), and the like, but not limited thereto. For example, a functional block (configuration unit) that causes transmission to function is called a transmitter (transmitting unit) or a transmitter (transmitter). In short, the implementation method is not particularly limited as described above.

For example, the base station 10, the terminal 20, and the like in one embodiment of the present disclosure may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Fig. 9 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to one embodiment of the present disclosure. The base station 10 and the terminal 20 may be physically configured as computer devices 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, and the like.

In addition, in the following description, the term "means" may be replaced with "circuit", "device", "unit", or the like. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the illustrated devices, or may be configured to include no part of the devices.

The functions in the base station 10 and the terminal 20 are realized by the following methods: predetermined software (program) is read into hardware such as the processor 1001 and the storage device 1002, and the processor 1001 performs an operation to control communication by the communication device 1004 or to control at least one of reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.

The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may be configured by a central processing unit (CPU: central Processing Unit) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, the control unit 140, the control unit 240, and the like may be realized by the processor 1001.

Further, 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 accordingly. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 140 of the base station 10 shown in fig. 7 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. For example, the control unit 240 of the terminal 20 shown in fig. 8 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-described various processes are described as being executed by one processor 1001, the above-described various processes may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may also be mounted by more than one chip. In addition, the program may also be transmitted from the network via a telecommunication line.

The storage device 1002 is a computer-readable recording medium, and may be configured by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM: erasable programmable Read Only Memory), EEPROM (Electrically Erasable Programmable ROM: electrically erasable programmable Read Only Memory), RAM (Random Access Memory: random access Memory), and the like. The storage 1002 may also be referred to as a register, a cache, a main memory (main storage), or the like. The storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement a communication method according to an embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, and may be configured of at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a Floppy disk, a magneto-optical disk (for example, a Compact Disc, a digital versatile Disc, a Blu-ray (registered trademark) Disc), a smart card, a flash memory (for example, a card, a stick, a Key drive), a pivotable (registered trademark) Disc, a magnetic stripe, and the like. The storage medium may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or other suitable medium.

The communication device 1004 is hardware (transceiver device) for performing communication between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like, for example. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like, for example, to realize at least one of frequency division duplexing (FDD: frequency Division Duplex) and time division duplexing (TDD: time Division Duplex). For example, a transmitting/receiving antenna, an amplifying unit, a transmitting/receiving unit, a transmission path interface, and the like may be realized by the communication device 1004. The transmitting/receiving unit may be physically or logically separately mounted by the transmitting unit and the receiving unit.

The input device 1005 is an input apparatus (for example, a keyboard, a mouse, a microphone, a switch, a key, a sensor, or the like) that receives an input from the outside. The output device 1006 is an output apparatus (for example, a display, a speaker, an LED lamp, or the like) that performs output to the outside. The input device 1005 and the output device 1006 may be integrally formed (for example, a touch panel).

The processor 1001 and the storage device 1002 are connected by a bus 1007 for communicating information. The bus 1007 may be formed by a single bus or may be formed by different buses between devices.

The base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP: digital Signal Processor), an ASIC (Application Specific Integrated Circuit: application specific integrated circuit), a PLD (Programmable Logic Device: programmable logic device), an FPGA (Field Programmable Gate Array: field programmable gate array), or may be configured to implement a part or all of the functional blocks by the hardware. For example, the processor 1001 may also be implemented using at least one of these hardware.

(summary of embodiments)

As described above, according to an embodiment of the present invention, there is provided a terminal including: a transmission unit that performs repeated transmission of a physical uplink shared channel to a base station; and a control unit that applies frequency hopping between a plurality of component carriers to the repeated transmission, wherein the control unit determines the plurality of component carriers based on signaling from the base station or the type of the physical uplink shared channel.

According to the above configuration, the terminal 20 can improve reliability by applying the spread hopping frequency at the time of repeated transmission. That is, in the wireless communication system, reliability in the case of repeated transmission can be improved.

The plurality of component carriers may also correspond to a group of physical uplink control channels, a timing advance group, or a cell group. According to this configuration, the terminal 20 can improve reliability by applying frequency hopping extended between associated CCs at the time of repeated transmission.

The transmitting unit may notify the base station of the execution of the repeated transmission and autonomously start the repeated transmission. According to this configuration, the terminal 20 can improve reliability by applying frequency hopping extended between associated CCs at the time of repeated transmission.

The control section also applies frequency hopping between a plurality of bands and frequency hopping within one component carrier to the repeated transmission. According to this structure, the terminal 20 can improve reliability by applying frequency hopping extended between bands, between CCs and within 1CC at the time of repeated transmission.

Further, according to an embodiment of the present invention, there is provided a base station having: a transmitting unit that transmits information for determining a plurality of component carriers to a terminal; and a receiving unit that receives, from the terminal, repeated transmissions of a physical uplink shared channel to which frequency hopping between the plurality of component carriers is applied.

According to the above configuration, the terminal 20 can improve reliability by applying the spread hopping frequency at the time of repeated transmission. That is, in the wireless communication system, reliability in the case of repeated transmission can be improved.

Further, according to an embodiment of the present invention, there is provided a communication method in which the following steps are performed by a terminal: a transmission step of performing repeated transmission of a physical uplink shared channel to a base station; a control step of applying frequency hopping among a plurality of component carriers to the repeated transmission; and determining the plurality of component carriers according to signaling from the base station or the kind of the physical uplink shared channel.

According to the above configuration, the terminal 20 can improve reliability by applying the spread hopping frequency at the time of repeated transmission. That is, in the wireless communication system, reliability in the case of repeated transmission can be improved.

(supplement of the embodiment)

While the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will appreciate various modifications, substitutions, alternatives, and the like. Specific numerical examples are described for the purpose of promoting the understanding of the present invention, but these numerical examples are only examples and any appropriate values may be used unless otherwise specified. The distinction between items in the above description is not essential to the present invention, and items described in two or more items may be used in combination as required, or items described in one item may be applied to items described in another item (unless contradiction arises). The boundaries of functional units or processing units in the functional block diagrams do not necessarily correspond to the boundaries of physical components. The operation of the plurality of functional units may be physically performed by one member, or the operation of the plurality of functional units may be physically performed by a plurality of members. With regard to the processing procedures described in the embodiments, the order of processing may be exchanged without contradiction. For ease of illustration, functional block diagrams are used for the base station 10 and the terminal 20, but such means may also be implemented in hardware, in software or in a combination thereof. The software operating by the processor provided by the base station 10 according to the embodiment of the present invention and the software operating by the processor provided by the terminal 20 according to the embodiment of the present invention may be stored in Random Access Memory (RAM), flash memory, read Only Memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), a removable disk, a CD-ROM, a database, a server, and any other suitable storage medium, respectively.

Further, the notification of the information is not limited to the form/embodiment described in the present disclosure, and may be performed using other methods. For example, the notification of the information may be implemented by physical layer signaling (e.g., DCI (Downlink Control Information: downlink control information), UCI (Uplink Control Information: uplink control information)), higher layer signaling (e.g., RRC (Radio Resource Control: radio resource control) signaling, MAC (Medium Access Control: media access control) signaling, broadcast information (MIB (Master Information Block: master information block), SIB (System Information Block: system information block)), other signals, or a combination thereof.

The various forms/embodiments described in the present disclosure may also be applied to at least one of LTE (Long Term Evolution: long term evolution), LTE-a (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4 th generation mobile communication system: fourth generation mobile communication system), 5G (5 th generation mobile communication system: fifth generation mobile communication system), FRA (Future Radio Access: future wireless access), NR (New Radio: new air interface), W-CDMA (registered trademark), GSM (registered trademark), CDMA 2000, UMB (Ultra Mobile Broadband: ultra mobile broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-wide), bluetooth (registered trademark), systems using other suitable systems, and next generation systems extended accordingly. Further, a plurality of systems (for example, a combination of 5G and at least one of LTE and LTE-a) may be applied in combination.

The processing procedures, timings, flows, and the like of the respective modes/embodiments described in the present specification can be replaced without contradiction. For example, for the methods described in this disclosure, elements of the various steps are presented using an illustrated order, but are not limited to the particular order presented.

In the present specification, the specific operation performed by the base station 10 may be performed by an upper node (upper node) according to circumstances. In a network composed of one or more network nodes (network nodes) having a base station 10, it is apparent that various operations performed for communication with a terminal 20 may be performed by at least one of the base station 10 and other network nodes (for example, MME or S-GW, etc., but not limited thereto are considered) other than the base station 10. In the above, the case where one other network node other than the base station 10 is illustrated, but the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).

Information, signals, and the like described in the present disclosure can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). Or may be input or output via a plurality of network nodes.

The input or output information and the like may be stored in a specific location (for example, a memory), or may be managed using a management table. The input or output information and the like can be rewritten, updated or recorded. The outputted information and the like may also be deleted. The input information and the like may also be transmitted to other devices.

The determination in the present disclosure may be performed by a value (0 or 1) represented by 1 bit, may be performed by a Boolean value (true or false), or may be performed by a comparison of numerical values (e.g., a comparison with a predetermined value).

With respect to software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, should be broadly interpreted to refer to a command, a set of commands, code, a code segment, program code, a program (program), a subroutine, a software module, an application, a software package, a routine, a subroutine, an object, an executable, a thread of execution, a procedure, a function, or the like.

In addition, software, commands, information, etc. may be transmitted and received via a transmission medium. For example, in the case where software is transmitted from a website, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.), at least one of the wired and wireless technologies is included in the definition of transmission medium.

Information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, commands, instructions (commands), information, signals, bits, symbols, chips (chips), and the like may be referenced throughout the above description by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

In addition, the terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and the symbol may be a signal (signaling). In addition, the signal may also be a message. In addition, the component carrier (CC: component Carrier) may also be referred to as a carrier frequency, a cell, a frequency carrier, etc.

The terms "system" and "network" as used in this disclosure are used interchangeably.

In addition, information, parameters, and the like described in this disclosure may be expressed using absolute values, relative values to predetermined values, or other information corresponding thereto. For example, radio resources may also be indicated by an index.

The names used for the above parameters are non-limiting in any respect. Further, the numerical formulas and the like using these parameters may also be different from those explicitly disclosed in the present disclosure. Since the various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by all appropriate names, the various names assigned to these various channels and information elements are non-limiting in any respect.

In the present disclosure, terms such as "Base Station", "radio Base Station", "fixed Station", "NodeB", "eNodeB (eNB)", "gndeb (gNB)", "access point", "transmission point (transmission point)", "reception point", "transmission point", "reception point", "cell", "sector", "cell group", "carrier", "component carrier", and the like may be used interchangeably. The terms macrocell, microcell, femtocell, picocell, and the like are also sometimes used to refer to a base station.

The base station can accommodate one or more (e.g., 3) cells. When a base station accommodates a plurality of cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each of the smaller areas can also provide communication services through a base station subsystem (for example, an indoor small base station (RRH: remote Radio Head (remote radio head)), and the term "cell" or "sector" refers to a part or the entire coverage area of at least one of a base station and a base station subsystem that performs communication services within the coverage area.

In the present disclosure, terms such as "Mobile Station", "User terminal", "User Equipment", and "terminal" may be used interchangeably.

For mobile stations, those skilled in the art are sometimes referred to by the following terms: a subscriber station, mobile unit (mobile unit), subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, or some other suitable terminology.

At least one of the base station and the mobile station may be referred to as a transmitting apparatus, a receiving apparatus, a communication apparatus, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The mobile body may be a vehicle (e.g., an automobile, an airplane, etc.), a mobile body that moves unmanned (e.g., an unmanned aerial vehicle, an autopilot, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station also includes a device that does not necessarily move during a communication operation. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things: internet of things) device such as a sensor.

In addition, the base station in the present disclosure may be replaced with a user terminal. For example, the various forms/embodiments of the present disclosure may also be applied to a structure in which communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, may also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything system), or the like). In this case, the terminal 20 may have the functions of the base station 10. Further, the terms "upstream" and "downstream" may be replaced with terms (e.g., "side") corresponding to the inter-terminal communication. For example, the uplink channel, the downlink channel, and the like may be replaced with side channels.

Likewise, the user terminal in the present disclosure may be replaced with a base station. In this case, the base station may have the functions of the user terminal described above.

The terms "determining" and "determining" used in the present disclosure may include various operations. The "judgment" and "determination" may include, for example, a matter in which judgment (determination), calculation (calculation), processing (processing), derivation (development), investigation (investigation), search (lookup up, search, inquiry) (for example, search in a table, database, or other data structure), confirmation (evaluation), or the like are regarded as a matter in which "judgment" and "determination" are performed. Further, "determining" and "deciding" may include a matter in which reception (e.g., reception of information), transmission (e.g., transmission of information), input (input), output (output), access (e.g., access of data in a memory) is performed as a matter in which "determining" and "deciding" are performed. Further, "judging" and "determining" may include the matters of performing a decision (resolving), a selection (selecting), a selection (setting), a establishment (establishing), a comparison (comparing), and the like as matters of performing "judging" and "determining". That is, the terms "determine" and "determining" may include what is considered to be any action. The "judgment (decision)" may be replaced by "assumption", "expectation", "consider", or the like.

The terms "connected," "coupled," or any variation of these terms are intended to refer to any direct or indirect connection or coupling between two or more elements, including the case where one or more intervening elements may be present between two elements that are "connected" or "coupled" to each other. The combination or connection of the elements may be physical, logical, or a combination of these. For example, "connection" may also be replaced with "access". As used in this disclosure, two elements may be considered to be "connected" or "joined" to each other using at least one of one or more wires, cables, and printed electrical connections, and as some non-limiting and non-inclusive examples, electromagnetic energy or the like having wavelengths in the wireless frequency domain, the microwave region, and the optical (both visible and invisible) region.

The reference signal may be simply RS (Reference Signal) or may be called Pilot (Pilot) depending on the standard applied.

As used in this disclosure, the recitation of "according to" is not intended to mean "according to" unless explicitly recited otherwise. In other words, the term "according to" means "according to only" and "according to at least" both.

Any reference to elements referred to using "1 st", "2 nd", etc. as used in this disclosure also does not entirely define the number or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to elements 1 and 2 do not indicate that only two elements can be taken or that in any form element 1 must precede element 2.

The "unit" in the structure of each device may be replaced with "part", "circuit", "device", or the like.

Where the terms "include", "comprising" and variations thereof are used in this disclosure, these terms are intended to be inclusive as well as the term "comprising". Also, the term "or" as used in this disclosure means not exclusive or.

A radio frame may be made up of one or more frames in the time domain. In the time domain, one or more of the frames may be referred to as subframes. A subframe may further be composed of one or more slots in the time domain. The subframes may also be a fixed length of time (e.g., 1 ms) independent of the parameter set (numerology).

The parameter set may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel. The parameter set may represent, for example, at least one of a subcarrier spacing (SCS: subCarrier Spacing), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI: transmission Time Interval), a number of symbols per TTI, a radio frame structure, a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.

A slot may be formed in the time domain from one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing: orthogonal frequency division multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access: single carrier frequency division multiple access) symbols, etc.). A slot may be a unit of time based on a set of parameters.

A slot may contain multiple mini-slots. Each mini-slot may be made up of one or more symbols in the time domain. In addition, the mini-slot may also be referred to as a sub-slot. Mini-slots may be made up of a fewer number of symbols than slots. PDSCH (or PUSCH) transmitted in units of time greater than the mini-slot may be referred to as PDSCH (or PUSCH) mapping type (type) a. PDSCH (or PUSCH) transmitted using mini-slots may be referred to as PDSCH (or PUSCH) mapping type (type) B.

The radio frame, subframe, slot, mini-slot, and symbol each represent a unit of time when a signal is transmitted. The radio frame, subframe, slot, mini-slot, and symbol may each use corresponding other designations.

For example, one subframe may also be referred to as a transmission time interval (TTI: transmission Time Interval), a plurality of consecutive subframes may also be referred to as TTIs, and one slot or one mini slot may also be referred to as a TTI. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in the conventional LTE, may be a period (e.g., 1-13 symbols) shorter than 1ms, or may be a period longer than 1 ms. In addition, a unit indicating a TTI may not be referred to as a subframe, but may be referred to as a slot, a mini-slot, or the like.

Here, TTI refers to, for example, a scheduled minimum time unit in wireless communication. For example, in the LTE system, the base station performs scheduling for each terminal 20 to allocate radio resources (bandwidth, transmission power, and the like that can be used in each terminal 20) in TTI units. In addition, the definition of TTI is not limited thereto.

The TTI may be a transmission time unit of a data packet (transport block), a code block, a codeword, or the like after channel coding, or may be a processing unit such as scheduling or link adaptation. In addition, when a TTI is given, the time interval (e.g., number of symbols) in which a transport block, a code block, a codeword, etc. is actually mapped may be shorter than the TTI.

In addition, in the case where 1 slot or 1 mini slot is referred to as a TTI, more than one TTI (i.e., more than one slot or more than one mini slot) may constitute a minimum time unit of scheduling. In addition, the number of slots (the number of mini slots) constituting the minimum time unit of scheduling can be controlled.

A TTI having a time length of 1ms may also be referred to as a normal TTI (TTI in LTE rel.8-12), normal TTI (normal TTI), long TTI (long TTI), normal subframe (normal subframe), long (long) subframe, slot, etc. A TTI that is shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI (short TTI), a partial or fractional TTI, a shortened subframe, a short (short) subframe, a mini-slot, a sub-slot, a slot, etc.

In addition, for long TTIs (long TTIs) (e.g., normal TTIs, subframes, etc.), a TTI having a time length exceeding 1ms may be substituted, and for short TTI (short TTI) (e.g., shortened TTI, etc.), a TTI having a TTI length less than the long TTI (long TTI) and having a TTI length of 1ms or more may be substituted.

A Resource Block (RB) is a resource allocation unit of a time domain and a frequency domain, in which one or more consecutive subcarriers (subcarriers) may be included. The number of subcarriers contained in the RB may be the same regardless of the parameter set, for example, 12. The number of subcarriers included in the RB may also be determined according to the parameter set.

Further, the time domain of the RB may contain one or more symbols, and may be 1 slot, 1 mini slot, 1 subframe, or 1TTI in length. A 1TTI, a 1 subframe, etc. may each be composed of one or more resource blocks.

In addition, one or more RBs may be referred to as Physical resource blocks (PRB: physical RBs), subcarrier groups (SCG: sub-Carrier groups), resource element groups (REG: resource Element Group), PRB pairs, RB peering.

Furthermore, a Resource block may be composed of one or more Resource Elements (REs). For example, 1RE may be a radio resource region of 1 subcarrier and 1 symbol.

A Bandwidth Part (BWP: bandwidth Part), which may be referred to as a Bandwidth Part or the like, may represent a subset of consecutive common RBs (common resource blocks: common resource blocks) for a certain parameter set in a certain carrier. Here, the common RB may be determined by an index of the RB with reference to a common reference point of the carrier. PRBs may be defined in a certain BWP and numbered within the BWP.

BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP). One or more BWP may be set for the terminal 20 within 1 carrier.

At least one of the set BWP may be active, and a case where the terminal 20 transmits and receives a predetermined signal/channel outside the active BWP may not be envisaged. In addition, "cell", "carrier", etc. in the present disclosure may be replaced with "BWP".

The structure of the radio frame, subframe, slot, mini slot, symbol, etc. described above is merely an example. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots included in a slot, the number of symbols and RBs included in a slot or mini-slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the Cyclic Prefix (CP) length, and the like may be variously changed.

In the present disclosure, for example, where an article is added by translation as in a, an, and the in english, the present disclosure may also include a case where a noun following the article is in plural.

In the present disclosure, the term "a is different from B" may also mean that "a is different from B". In addition, the term may mean that "a and B are different from C, respectively. The terms "separate," coupled, "and the like may also be construed as" different.

The various forms and embodiments described in this disclosure may be used alone, in combination, or switched depending on the implementation. Note that the notification of the predetermined information is not limited to being performed explicitly (for example, notification of "yes" or "X"), and may be performed implicitly (for example, notification of the predetermined information is not performed).

In addition, in the present disclosure, PUSCH is an example of a physical uplink shared channel. PUCCH is an example of a physical uplink control channel.

The present disclosure has been described in detail above, but it should be 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 as modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Accordingly, the description of the present disclosure is intended to be illustrative, and not in any limiting sense.

Description of the reference numerals

10: a base station;

110: a transmitting unit;

120: a receiving section;

130: a setting unit;

140: a control unit;

20: a terminal;

210: a transmitting unit;

220: a receiving section;

230: a setting unit;

240: a control unit;

30: a core network;

1001: a processor;

1002: a storage device;

1003: an auxiliary storage device;

1004: a communication device;

1005: an input device;

1006: and an output device.

Claims (6)

1. A terminal, having:

a transmission unit that performs repeated transmission of a physical uplink shared channel to a base station; and

a control unit that applies frequency hopping among a plurality of component carriers to the repeated transmission,

The control unit determines the plurality of component carriers based on signaling from the base station or the type of the physical uplink shared channel.

2. The terminal of claim 1, wherein,

the plurality of component carriers corresponds to a group, timing advance group, or cell group of a physical uplink control channel.

3. The terminal of claim 1, wherein,

the transmitting unit notifies the base station of the execution of the repeated transmission and autonomously starts the repeated transmission.

4. The terminal of claim 1, wherein,

the control section also applies frequency hopping between a plurality of bands and frequency hopping within one component carrier to the repeated transmission.

5. A base station, comprising:

a transmitting unit that transmits information for determining a plurality of component carriers to a terminal; and

and a receiving unit configured to receive, from the terminal, repeated transmissions of a physical uplink shared channel to which frequency hopping between the plurality of component carriers is applied.

6. A communication method, wherein the following steps are performed by a terminal:

a transmission step of performing repeated transmission of a physical uplink shared channel to a base station;

a control step of applying frequency hopping among a plurality of component carriers to the repeated transmission; and

Determining the plurality of component carriers according to signaling from the base station or the type of the physical uplink shared channel.