Terminal, base station, and communication method

Abstract

A terminal is provided with: a transmission unit that transmits a signal for sharing an uplink signal to another terminal by means of near field communication; and a communication unit that cooperates with the other terminal and transmits the uplink signal to a base station or a network.

Description

Technical Field

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

[0002] In NR (New Radio) (also called "5G"), which is the successor system to LTE (Long Term Evolution), technologies that meet the requirements of large-capacity systems, high data transmission speeds, low latency, simultaneous connection of multiple terminals, low costs, and power saving are being studied (for example, non-patent document 1).

[0003] It is envisioned that the successor system to NR (also called "6G") will require higher quality communications than 5G. For example, by using short-range communications as an aid to communications between the network (base station) and the terminal, it may be possible to achieve higher quality communications.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-patent document 1: 3GPP TS 38.300 V16.8.0 (2021-12) Summary of the invention

[0007] Problems to be solved by the invention

[0008] Conventionally, there has been a problem that technology for using short-range communication as an aid to communication between a network (base station) and a terminal has not been standardized.

[0009] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to realize short-distance communication for assisting communication between a network (base station) and a terminal in a wireless communication system.

[0010] Means for solving problems

[0011] According to the disclosed technology, a terminal is provided, wherein the terminal has: a sending unit that sends a signal for sharing an uplink signal to other terminals through short-range communication; and a communication unit that cooperates with the other terminals to send the uplink signal to a base station or a network.

[0012] Effects of the Invention

[0013] According to the disclosed technology, a technology capable of realizing short-range communication for assisting communication between a network (base station) and a terminal in a wireless communication system is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a diagram for explaining a wireless communication system involved in an embodiment of the present invention.

[0015] Figure 2 This is a diagram for explaining V2X.

[0016] Figure 3 This is a diagram for explaining an example of a V2X transmission mode.

[0017] Figure 4 This is a diagram showing an example of a configuration of a wireless communication system according to an embodiment of the present invention.

[0018] Figure 5 This is a diagram showing an example of the configuration of a wireless communication system according to Example 1 of an embodiment of the present invention.

[0019] Figure 6 This is a diagram showing an example of a communication flow including short-distance communication according to Example 1 of the embodiment of the present invention.

[0020] Figure 7 This is a diagram showing an example of a communication flow including short-distance communication according to Example 2 of an embodiment of the present invention.

[0021] Figure 8 This is a diagram showing an example of a functional configuration of a base station according to an embodiment of the present invention.

[0022] Fig. 9 This is a diagram showing an example of a functional configuration of a terminal according to an embodiment of the present invention.

[0023] Fig.10 This is a diagram showing an example of a hardware configuration of a base station or a terminal according to an embodiment of the present invention.

[0024] Fig.11 It is a diagram showing an example of the structure of a vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the embodiment described below is only an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0026] In the operation of the wireless communication system of the embodiment of the present invention, existing technologies are appropriately used. The existing technologies are, for example, existing LTE, but are not limited to existing LTE. In addition, unless otherwise specified, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and subsequent methods (e.g., NR) of LTE-Advanced.

[0027] In addition, in the embodiments of the present invention described below, the terms 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), PUSCH (Physical Uplink Shared Channel), etc. used in the existing LTE are used. These are for the convenience of recording, and the same signals, functions, etc. may also be referred to by other names. In addition, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even signals used for NR are not necessarily clearly recorded as "NR-".

[0028] Furthermore, in the embodiments of the present invention, the duplexing method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or other methods (for example, Flexible Duplex, etc.).

[0029] In the embodiment of the present invention, “configuring” wireless parameters and the like may be pre-configuring predetermined values, or may be configuring wireless parameters notified from the base station 10 or the terminal 20 .

[0030] (System Structure)

[0031] Figure 1 It is a diagram for explaining a wireless communication system involved in an embodiment of the present invention.

[0032] like Figure 1 As shown, the wireless communication system involved in the embodiment of the present invention includes a base station 10 and a terminal 20. Figure 1Although one base station 10 and one terminal 20 are shown in each figure, this is only an example and there may be a plurality of base stations 10 and a plurality of terminals 20.

[0033] 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 by the time domain and the frequency domain. The time domain can be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain can be defined by the number of subcarriers or resource blocks. In addition, the TTI (Transmission Time Interval) in the time domain can be a time slot, and the TTI can be a subframe.

[0034] The base station 10 sends a synchronization signal and system information to the terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is, for example, sent via NR-PBCH, also called broadcast information. The synchronization signal and system information may also be referred to as SSB (SS / PBCH block). Figure 1 As shown, the base station 10 sends a control signal or data to the terminal 20 via DL (Downlink), and receives a control signal or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to send and receive signals. In addition, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output)-based communications to DL or UL. In addition, the base station 10 and the terminal 20 can also communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) based on CA (Carrier Aggregation). Furthermore, the terminal 20 can also communicate via the primary cell of the base station 10 based on DC (Dual Connectivity) and the primary and secondary cell group cells (PSCell: Primary SCG Cell) of other base stations 10.

[0035] 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, or an M2M (Machine-to-Machine) communication module. Figure 1As shown, the terminal 20 receives a control signal or data from the base station 10 via DL and sends a control signal or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. In addition, the terminal 20 receives various reference signals sent from the base station 10 and performs a measurement of the propagation path quality based on the reception result of the reference signal. In addition, the terminal 20 may also be referred to as a UE and the base station 10 may also be referred to as a gNB.

[0036] (Past Problems)

[0037] It is envisioned that the successor system to NR (also called "6G") will require higher quality communications than 5G. For example, by using short-range communications as an aid to communications between the network (base station) and the terminal, it may be possible to achieve higher quality communications.

[0038] For example, consider a situation where multiple terminals perform transmission and reception in cooperation. Consider a situation where the transmission data of a certain terminal is shared with nearby communication devices and transmitted to the base station in cooperation, and the reception data of a certain terminal is also received and shared by nearby communication devices, combined and decoded.

[0039] However, conventionally, there has been a problem that technology for using short-range communication as an aid to communication between a network (base station) and a terminal has not been standardized.

[0040] (Overview of this embodiment)

[0041] Here, in this embodiment, an example of using short-distance communication as an auxiliary communication between a network (base station) and a terminal is described. First, conventional V2X is described as an example of short-distance communication in this embodiment.

[0042] Figure 2 This is a diagram for explaining V2X. In NR, V2X (Vehicle to Everything) or eV2X (enhanced V2X) is being studied by extending D2D functions and is being standardized. Figure 2As shown, V2X is a part of ITS (Intelligent Transport Systems), which is a general term for V2V (Vehicle to Vehicle) which represents the communication between vehicles, V2I (Vehicle to Infrastructure) which represents the communication between vehicles and roadside units (RSU: Road-Side Unit) installed beside the road, V2N (Vehicle to Network) which represents the communication between vehicles and ITS servers, and V2P (Vehicle to Pedestrian) which represents the communication between vehicles and mobile terminals held by pedestrians.

[0043] In addition, in NR, research is being conducted on V2X that uses cellular communication and terminal-to-terminal communication using LTE or NR. V2X that uses cellular communication is also called cellular V2X. In NR's V2X, research is being conducted on achieving large capacity, low latency, high reliability, and QoS (Quality of Service) control.

[0044] Regarding LTE or NR V2X, it is envisaged that research will not be limited to previous specifications. For example, it is envisaged to study how to ensure interoperability, reduce the cost of high-level implementation methods, use or switch methods of multiple RATs (Radio Access Technology), regulatory support in various countries, and how to obtain, publish, manage databases, and use data on LTE or NR V2X platforms.

[0045] In an embodiment of the present invention, in addition to being mounted on a vehicle, the communication device may also be a terminal held by a person, the communication device may also be a device mounted on a drone or an aircraft, the communication device may also be a base station, an RSU, a relay station (Relay Node), a terminal with scheduling capabilities, etc.

[0046] In addition, SL (Sidelink) can also be distinguished by UL (Uplink) or DL ​​(Downlink) and any one or a combination of the following 1) to 4). In addition, SL can also be other names.

[0047] 1) Resource allocation in the time domain

[0048] 2) Resource allocation in frequency domain

[0049] 3) Reference synchronization signal (including SLSS (Sidelink Synchronization Signal))

[0050] 4) Reference signal for path loss measurement for transmit power control

[0051] In addition, for OFDM (Orthogonal Frequency Division Multiplexing) of SL or UL, any one of CP-OFDM (Cyclic-Prefix OFDM), DFT-S-OFDM (Discrete Fourier Transform-Spread-OFDM), OFDM without transform precoding, and OFDM with transform precoding can also be applied.

[0052] In the SL of LTE, Mode 3 and Mode 4 are defined for resource allocation of the SL to the terminal 20. In Mode 3, transmission resources are dynamically allocated using DCI (Downlink Control Information) sent from the base station 10 to the terminal 20. In addition, in Mode 3, SPS (SemiPersistent Scheduling) can also be performed. In Mode 4, the terminal 20 autonomously selects transmission resources from a resource pool.

[0053] In addition, the time slot in the embodiment of the present invention may also be replaced by a symbol, a mini-time slot, a subframe, a radio frame, a TTI (Transmission Time Interval), and a time resource. In addition, the cell in the embodiment of the present invention may also be replaced by a cell group, a carrier component, a BWP, a resource pool, a resource, a RAT (Radio Access Technology), a system (including a wireless LAN), and the like.

[0054] In addition, in the embodiment of the present invention, the terminal 20 is not limited to a V2X terminal, but may be any type of terminal that performs D2D communication. For example, the terminal 20 may be a terminal held by a user such as a smartphone, or an IoT (Internet of Things) device such as a smart meter.

[0055] Figure 3 FIG. 1 is a diagram for explaining an example of a V2X transmission mode. Figure 3 In the transmission mode of the sidelink communication shown in FIG. 1 , in step 1, the base station 10 sends the sidelink scheduling to the first terminal 20A. Then, the first terminal 20A sends PSCCH (Physical Sidelink Control Channel) and PSSCH (Physical Sidelink Shared Channel) to the second terminal 20B according to the received scheduling (step 2). Figure 3 The transmission mode of the sidelink communication shown is called the sidelink transmission mode 3 in LTE. In the sidelink transmission mode 3 of LTE, the sidelink scheduling based on Uu is performed. Uu refers to the radio interface between UTRAN (Universal Terrestrial Radio Access Network) and UE (User Equipment).

[0056] Next, an overview of the near field communication according to the present embodiment will be described. The first terminal 20A and the second terminal 20B cooperate with each other through near field communication, and transmit and receive signals related to the first terminal 20A to the base station 10 (network).

[0057] Figure 4 1 is a diagram showing an example of a structure of a wireless communication system according to an embodiment of the present invention. A first terminal 20A and a second terminal 20B share data through short-range communication. Then, the first terminal 20A and the second terminal 20B communicate with the base station 10 (or the core network 30) in cooperation.

[0058] "Near field communication" may refer to any one or more of the following communications.

[0059] ・Communications with a communication distance less than a predetermined value are assumed

[0060] Communication between terminals with a predetermined function (e.g., cooperative function)

[0061] Communications involving a predetermined RAT / Link (e.g. sidelink)

[0062] Here, "collaboration" may be any of the following, but is not limited thereto.

[0063] ·Perform sending / receiving / sharing of the same signal / TB (Transport Block)

[0064] The application establishes the associated transmission method (e.g., antenna port, codebook, transmit power)

[0065] The “base station” may be replaced by a “communication device.” In addition, the “second terminal” may be replaced by a “communication device.”

[0066] Regarding several options described in the embodiments described below, a plurality of options are defined in the specification, and the options actually used can also be given by setting.

[0067] The "notification" in the embodiments described below can be performed through any one of RRC / MAC (MAC-CE) / PHY (DCI).

[0068] Any reward may be paid from the base station 10 (network) to the second terminal 20B. For example, the reward paid may be priority processing in the radio layer or a reward in the application layer (for example, money, points, or increased communication capacity).

[0069] The first terminal 20A and / or the second terminal 20B may also report the terminal capability information involved in this embodiment to the base station 10 (network).

[0070] The first terminal 20A and the second terminal 20B may also transmit and receive the terminal capability information involved in this embodiment. For example, a PC5-RRC connection may be established between the first terminal 20A and the second terminal 20B.

[0071] The number of the second terminal 20B may be one or more.

[0072] According to the present embodiment, higher quality communication can be achieved through cooperation based on short-distance communication.

[0073] Next, Example 1 and Example 2 will be described as specific examples of the present embodiment.

[0074] (Example 1)

[0075] In this embodiment, an example is described in which a signal generated by the first terminal 20A is shared with the second terminal 20B through short-distance communication, and the first terminal 20A and the second terminal 20B cooperate to transmit the signal to the base station 10 (network).

[0076] Figure 5 This is a diagram showing an example of the configuration of a wireless communication system according to Example 1 of an embodiment of the present invention.

[0077] The "signal" may be a TB, control information, or both a TB and control information.

[0078] Figure 5The arrow 901 shown indicates close range communication for "sharing". "Sharing" can be performed by a sidelink signal, but is not limited to this. The shared information can be a bit sequence of a signal (TB / control information) sent by the second terminal 20B, or a signal after scrambling and / or data modulation (PSK (Phase-Shift Keying) / QAM (Quadrature Amplitude Modulation), etc.), and can also include a multiplexed RS.

[0079] Information related to transmission from the second terminal 20B to the base station 10 (or the core network 30) (for example, setting information for transmission) is notified to the second terminal 20B by any one of the following options.

[0080] <Option A>

[0081] Figure 5 The arrow 902 shown indicates notification of information related to option A. The base station 10 (or the core network 30) may notify the second terminal 20B of information related to transmission from the second terminal 20B to the base station 10 (or the core network 30). The base station 10 (or the core network 30) may aggregate the notification with the notification from the base station 10 (or the core network 30) to the first terminal 20A, or may notify separately.

[0082] In the case of aggregated notification, the second terminal 20B can receive the notification using the RNTI inherent to the first terminal 20A or using the group common RNTI. Here, the RNTI inherent to the first terminal 20A can be notified to the second terminal 20B from the base station 10 (or the core network 30) or shared from the first terminal 20A to the second terminal 20B.

[0083] <Option B>

[0084] Figure 5 Arrow 903 shown indicates notification of information related to option B. The base station 10 (or the core network 30) may notify the first terminal 20A of information related to transmission from the second terminal 20B to the base station 10 (or the core network 30). In this case, the first terminal 20A notifies the second terminal 20B of the information.

[0085] The first terminal 20A may notify the information together with “share” indicated by the arrow 901 , or may notify the information separately from “share”.

[0086] According to the notification of information related to transmission from the second terminal 20B to the base station 10 (or the core network 30) based on option A and option B, it is possible to reduce communication overhead and / or simplify processing related to communication.

[0087] "Information related to transmission" may also include any of the following.

[0088] Grant, time / freq-domain resource (including repetition, FH, time-offset), antenna port (number / number), DMRS (Demodulation Reference Signal) / PTRS (Phase Tracking Reference Signal) (location / symbol number), transmit power (absolute / relative TPC (Transmit Power Control) command), number of layers, mapping type, resource index, waveform, subcarrier spacing (SCS), priority indicator, MCS (Modulation and Coding Scheme), scrambling, precoding

[0089] Next, the process of sending and receiving signals is described. Figure 6 This is a diagram showing an example of a communication flow including short-distance communication according to Example 1 of the embodiment of the present invention.

[0090] Signal transmission and reception can be based on Figure 6 The process shown may be executed by changing the order of some steps or not executing some steps.

[0091] The first terminal 20A generates a signal (step S101). Then, the first terminal 20A sends an SR (Scheduling Request) / BSR (Buffer Status Report) to the base station 10 (or the core network 30) (step S102). Here, the first terminal 20A may send a cooperative transmission request and / or information indicating a candidate for a cooperative terminal together with the SR / BSR. Here, the cooperative terminal is a terminal that transmits a signal in cooperation with the first terminal 20A.

[0092] The first terminal 20A and / or the second terminal 20B receives an instruction to execute cooperative transmission from the base station 10 (or the core network 30 ) (step S103 ).

[0093] The first terminal 20A transmits a signal for "sharing" to the second terminal 20B (step S104). Then, the first terminal 20A and the second terminal 20B perform cooperative transmission of cooperatively transmitting a signal (step S105).

[0094] In addition, when the transmission signal is a PUSCH, the action related to UCI multiplexing of the PUSCH may be any of the following options.

[0095] <Option A>

[0096] Each terminal may also assume that there is no UCI multiplexing (for example, PUCCH overlap). For example, the first terminal 20A may also assume that the UCI transmitted by the first terminal 20A is not multiplexed. In addition, the second terminal 20B may also assume that the UCI transmitted by the first terminal 20A is not multiplexed.

[0097] <Option B>

[0098] exist Figure 6 In step S104 shown, when the UCI multiplexing condition is met, the first terminal 20A may send a UCI multiplexing completion signal to the second terminal 20B for sharing.

[0099] <Option C>

[0100] exist Figure 6 In step S104 shown, the second terminal 20B may also send UCI to the first terminal 20A for sharing when the UCI multiplexing condition is met. In this case, the first terminal 20A may also send a signal multiplexed with the UCI to the second terminal 20B.

[0101] Through the actions related to UCI multiplexing of the PUSCH, it is possible to maintain the simplicity of the terminal structure or the flexibility of UCI scheduling.

[0102] It is also conceivable that the actions of the present embodiment are instructed / executed in a manner that satisfies the predetermined terminal processing time. Figure 6 The time (arrow 904) between reception in step S103 and transmission in step S105 is greater than a predetermined value, and the post-reception processing in step S103, the post-reception processing in step S104, and the pre-transmission processing in step S105 are performed within the predetermined value.

[0103] The second terminal 20B may imagine that the action in step S104 is determined to satisfy the condition that the time indicated by the arrow 904 is greater than a predetermined value. For example, it may be imagined that the resource candidates for the side link resources are determined based on this, it may be imagined that the selection of the side link resources is performed based on this, or it may be imagined that resources that are earlier in time are given priority in the selection of the side link resources.

[0104] By instructing and executing the operation so as to satisfy the predetermined terminal processing time, it is possible to avoid requiring excessive speed for the terminal processing.

[0105] The second terminal 20B Figure 6 If no signal is received from the first terminal 20A in step S104, the sending shown in step S105 may not be performed.

[0106] According to the present embodiment, it is possible to implement operations related to uplink communication in cooperative communication of terminals using short-range communication.

[0107] (Example 2)

[0108] In this embodiment, an example is described in which the first terminal 20A and the second terminal 20B cooperate to receive a signal generated for the first terminal 20A, and the first terminal 20A performs decoding using information related to the reception shared from the second terminal 20B through short-range communication.

[0109] The "signal" may be a TB, control information, or both a TB and control information.

[0110] The sharing from the second terminal 20B to the first terminal 20A may be performed via a sidelink signal, but is not limited thereto. The shared information may be soft-bits of the signal received by the second terminal 20B, or a range of bit depth / granularity / values ​​may be defined and / or set. In addition, the shared information may be a decoded bit sequence, or information indicating decoding success / failure.

[0111] Similar to the first embodiment, information related to transmission from the base station 10 (or the core network 30) to the second terminal 20B (for example, setting information for transmission) is notified to the second terminal 20B through one of the following options.

[0112] <Option A>

[0113] The base station 10 (or the core network 30) may notify the second terminal 20B of information related to the transmission from the second terminal 20B to the base station 10 (or the core network 30). The base station 10 (or the core network 30) may aggregate the notification with the notification from the base station 10 (or the core network 30) to the first terminal 20A, or may notify separately.

[0114] In the case of aggregated notification, the second terminal 20B can receive the notification using the RNTI inherent to the first terminal 20A or using the group common RNTI. Here, the RNTI inherent to the first terminal 20A can be notified to the second terminal 20B from the base station 10 (or the core network 30) or shared from the first terminal 20A to the second terminal 20B.

[0115] <Option B>

[0116] The base station 10 (or the core network 30) may notify the first terminal 20A of information related to transmission from the second terminal 20B to the base station 10 (or the core network 30). In this case, the first terminal 20A notifies the second terminal 20B of the information.

[0117] "Information related to transmission" may also include any of the following.

[0118] Grant, time / freq-domain resource (including repetition, FH, time-offset), antenna port (number / number), DMRS (Demodulation Reference Signal) / PTRS (Phase Tracking Reference Signal) (location / symbol number), transmit power (absolute / relative TPC (Transmit Power Control) command), number of layers, mapping type, resource index, waveform, subcarrier spacing (SCS), priority indicator, MCS (Modulation and Coding Scheme), scrambling, precoding

[0119] Next, the process of sending and receiving signals is described. Figure 7This is a diagram showing an example of a communication flow including short-distance communication according to Example 2 of an embodiment of the present invention.

[0120] Signal transmission and reception can be based on Figure 7 The process shown may be executed by changing the order of some steps or not executing some steps.

[0121] The base station 10 (or the core network 30 ) generates a signal (step S201 ). Then, the first terminal 20A receives a report instruction indicating information indicating a candidate for a coordination terminal from the base station 10 (or the core network 30 ) and reports the information (step S202 ).

[0122] The first terminal 20A and / or the second terminal 20B receives an instruction to perform cooperative reception from the base station 10 (or the core network 30) (step S203). Then, the first terminal 20A and the second terminal 20B cooperatively perform cooperative reception of a reception signal (step S204).

[0123] Next, the first terminal 20A receives information related to the reception from the second terminal 20B (step S205). Then, the first terminal 20A decodes the received information (step S206), and sends feedback information (e.g., HARQ feedback information) to the base station 10 (or core network 30) based on the decoding result (step S207).

[0124] It is also conceivable that the actions of the present embodiment may be instructed / executed in a manner that satisfies a predetermined terminal processing time. For example, the first terminal 20A and the second terminal 20B may also be conceivable Figure 7 The time (arrow 905) between reception in step S204 and transmission in step S207 is greater than a predetermined value, and the processing after reception in step S204, the processing involved in step S205, the processing involved in step S206, and the processing before transmission in step S205 are performed within the predetermined value.

[0125] The first terminal 20A may imagine that the action in step S205 is determined in a manner that satisfies the condition that the time indicated by the arrow 905 is greater than a predetermined value. For example, it may be imagined that the resource candidates for the side link resources are determined based on this, it may be imagined that the selection of the side link resources is performed based on this, or it may be imagined that resources that are earlier in time are given priority in the selection of the side link resources.

[0126] By instructing and executing the operation so as to satisfy the predetermined terminal processing time, it is possible to avoid requiring excessive speed for the terminal processing.

[0127] The second terminal 20B may not store the received signal in a soft buffer, and may not associate the HARQ process with the reception. Alternatively, the second terminal 20B may store the received signal in a soft buffer, and may associate the HARQ process with the reception.

[0128] The first terminal 20A may retain soft bits in decoding performed based on the information related to the reception shared from the second terminal 20B, and may use the soft bits for decoding at the time of retransmission.

[0129] When Figure 7 When the second terminal 20B does not receive a signal from the base station 10 (or the core network 30) in step S204, the second terminal 20B may not perform the transmission in step S205. In this case, the first terminal 20A may not perform the decoding in step S206.

[0130] According to the present embodiment, it is possible to implement operations related to downlink communication in cooperative communication of terminals using short-range communication.

[0131] (Device Structure)

[0132] 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.

[0133] <Base station 10>

[0134] Figure 8 1 is a diagram showing an example of the functional configuration of the base station 10. Figure 8 As shown, the base station 10 includes a transmission unit 110 , a reception unit 120 , a setting unit 130 , and a control unit 140 . Figure 8 The functional structure shown is only an example. As long as the actions involved in the embodiments of the present invention can be performed, the functional division and the name of the functional unit can be arbitrary. In addition, the sending unit 110 and the receiving unit 120 can also be collectively referred to as a communication unit.

[0135] 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 obtaining, for example, higher layer information from the received signals. In addition, the transmitting unit 110 has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, DCI based on PDCCH, data based on PDSCH, etc. to the terminal 20.

[0136] The setting unit 130 stores the preset setting information and various setting information to be transmitted to the terminal 20 in a storage device provided in the setting unit 130 , and reads the setting information from the storage device as needed.

[0137] The control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110. In addition, the control unit 140 includes a function of performing LBT. The functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the reception unit 120. In addition, the transmission unit 110 may be referred to as a transmitter, and the reception unit 120 may be referred to as a receiver.

[0138] <Terminal 20>

[0139] Fig. 9 2 is a diagram showing an example of the functional structure of the terminal 20. Fig. 9 As shown, the terminal 20 includes a transmitting unit 210 , a receiving unit 220 , a setting unit 230 , and a control unit 240 . Fig. 9 The functional structure shown is only an example. As long as the actions involved in the embodiments of the present invention can be performed, the functional division and the name of the functional unit can be arbitrary. The sending unit 210 and the receiving unit 220 can also be collectively referred to as a communication unit.

[0140] The transmitting unit 210 generates a transmission signal according to the transmission data and transmits the transmission signal wirelessly. The receiving unit 220 receives various signals wirelessly and obtains a higher layer signal from the received physical layer signal. In addition, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, DCI based on PDCCH, data based on PDSCH, etc. transmitted from the base station 10. In addition, for example, the transmitting unit 210 can send PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel), etc. to other terminals 20 as D2D communication, and the receiving unit 120 can receive PSCCH, PSSCH, PSDCH, PSBCH, etc. from other terminals 20.

[0141] The setting unit 230 stores various setting information received from the base station 10 or other terminals through the receiving unit 220 in a storage device provided by the setting unit 230, and reads it from the storage device as needed. In addition, the setting unit 230 also stores pre-set setting information. The control unit 240 controls the terminal 20. In addition, the control unit 240 includes a function of performing LBT.

[0142] The terminal or base station of this embodiment can be configured as the terminal or base station shown in the following items. In addition, the following communication method can also be implemented.

[0143] <Structure Related to This Embodiment>

[0144] (Item 1)

[0145] A terminal, wherein the terminal comprises:

[0146] a transmitting unit configured to transmit a signal for sharing an uplink signal to other terminals through short-range communication; and

[0147] A communication unit cooperates with the other terminals to send the uplink signal to a base station or a network.

[0148] (Item 2)

[0149] The terminal according to item 1, further comprising a receiving unit that receives information related to transmission of the uplink signal by the other terminal from the base station or the network,

[0150] The transmitting unit transmits information related to transmission of the uplink signal to the other terminal through the short-range communication.

[0151] (Item 3)

[0152] A terminal, wherein the terminal comprises:

[0153] a receiving unit that receives a signal for sharing an uplink signal from other terminals through short-range communication; and

[0154] A sending unit cooperates with the other terminals to send the uplink signal to a base station or a network.

[0155] (Item 4)

[0156] A terminal according to item 3, wherein the terminal also has a control unit, and the control unit is executed in a manner that the time from the time when the other terminal receives the signal for sharing the uplink signal to the time when the uplink signal is sent to the base station or the network in collaboration with the other terminal satisfies a predetermined terminal processing time.

[0157] (Item 5)

[0158] A base station, wherein the base station has:

[0159] a control unit that assumes that an uplink signal of the first terminal is transmitted from the first terminal in cooperation with the second terminal; and

[0160] A transmitting unit that transmits information related to the transmission of the uplink signal by the second terminal to the first terminal or the second terminal.

[0161] (Item 6)

[0162] A communication method performed by a terminal, wherein the communication method has the following steps:

[0163] transmitting a signal for sharing an uplink signal to other terminals through short distance communication; and

[0164] Cooperate with the other terminals to send the uplink signal to a base station or a network.

[0165] According to any of the above structures, a technology capable of implementing short-range communication for assisting communication between a network (base station) and a terminal in a wireless communication system is provided. According to item 1, a signal for sharing an uplink signal can be sent to other terminals through short-range communication, and the uplink signal can be sent to a base station or a network in cooperation with other terminals. According to item 2, information related to the sending of an uplink signal by other terminals can be received from a base station or a network, and the information related to the sending of an uplink signal can be sent to other terminals through short-range communication. According to item 3, a signal for sharing an uplink signal can be received from other terminals through short-range communication, and the uplink signal can be sent to a base station or a network in cooperation with other terminals. According to item 4, it can be executed in a manner that the time from the reception of the signal for sharing an uplink signal by other terminals to the sending of the uplink signal to the base station or a network in cooperation with other terminals satisfies a predetermined terminal processing time.

[0166] (Hardware Structure)

[0167] The block diagram used in the description of the above embodiment ( Figure 8 and Fig. 9) shows blocks in units of functions. These functional blocks (structural parts) are implemented by any combination of at least one of hardware and software. In addition, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented using a device that is physically or logically combined, or two or more physically or logically separated devices can be directly or indirectly connected (for example, using wires, wirelessly, etc.) and implemented using these multiple devices. The functional blocks can also be implemented by combining software in the above-mentioned one device or the above-mentioned multiple devices.

[0168] Functions include judging, determining, judging, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, solving, selecting, selecting, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but are not limited to these. For example, a functional block (structural unit) that enables the transmission function is called a transmitting unit or a transmitter. In short, as mentioned above, there is no particular limitation on the implementation method.

[0169] For example, the base station 10 , the terminal 20 , and the like in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig.10 1 is a diagram showing an example of a hardware structure of a base station 10 and a terminal 20 involved in one embodiment of the present disclosure. The base station 10 and the terminal 20 may also be configured as a computer device that physically includes a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.

[0170] In the following description, the word "device" may be replaced by "circuit", "device", "unit", etc. The hardware configuration of the base station 10 and the terminal 20 may include one or more of the devices shown in the figure, or may exclude some of the devices.

[0171] Each function in the base station 10 and the terminal 20 is implemented by the following method: predetermined software (program) is read into hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls the communication of the communication device 1004 or controls at least one of the reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.

[0172] The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may also be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, a computing device, registers, etc. For example, the control unit 140, the control unit 240, etc. may also be implemented by the processor 1001.

[0173] In addition, the processor 1001 reads a program (program code), a software module, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and performs various processes accordingly. As a program, a program that causes the computer to execute at least a part of the actions described in the above embodiments is used. For example, Figure 8 The control unit 140 of the base station 10 shown may also be implemented by a control program stored in the storage device 1002 and executed in the processor 1001. For example, Fig. 9 The control unit 240 of the terminal 20 shown can also be implemented by a control program stored in the storage device 1002 and operated in the processor 1001. Although it is described that the above-mentioned various processes are performed by one processor 1001, the above-mentioned various processes can also be performed simultaneously or sequentially by more than two processors 1001. The processor 1001 can also be implemented by more than one chip. In addition, the program can also be sent from the network via a telecommunication line.

[0174] The storage device 1002 is a computer-readable recording medium, and may be composed of at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may also be referred to as a register, a cache, a main memory (main storage device), etc. The storage device 1002 can store executable programs (program codes), software modules, etc. for implementing the communication method involved in one embodiment of the present disclosure.

[0175] The auxiliary storage device 1003 is a computer-readable recording medium, and may be composed of at least one of an optical disk such as a CD-ROM (CompactDisc ROM), a hard disk drive, a floppy 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, and other appropriate media including at least one of the storage device 1002 and the auxiliary storage device 1003.

[0176] The communication device 1004 is hardware (transceiver device) for communicating between computers via at least one of a wired network and a wireless network, and may also be referred to as a network device, a network controller, a network card, a communication module, etc. The communication device 1004 may also be configured to include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to implement at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). For example, a transceiver antenna, an amplifier, a transceiver, a transmission path interface, etc. may also be implemented by the communication device 1004. The transceiver may also be implemented by physically or logically separating the transmitter and the receiver.

[0177] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.). The output device 1006 is an output device that implements output to the outside (e.g., a display, a speaker, an LED light, etc.). In addition, the input device 1005 and the output device 1006 may also be integrally formed (e.g., a touch panel).

[0178] In addition, the processor 1001 and the storage device 1002 and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured by a single bus or may be configured by different buses between devices.

[0179] In addition, the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array), and a part or all of each functional block may be implemented by the hardware. For example, the processor 1001 may also be implemented using at least one of these hardware.

[0180] Fig.11 FIG. 2 shows a structural example of a vehicle 2001. Fig.11 As shown, the vehicle 2001 includes a driving 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 form / embodiment described in the present disclosure may also be applied to a communication device mounted on the vehicle 2001, for example, may also be applied to the communication module 2013.

[0181] The driving unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), 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.

[0182] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021 to 2029 included in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be referred to as an ECU (Electronic Control Unit).

[0183] As signals from various sensors 2021~2029, there are current signals from the current sensor 2021 that monitors the current of the motor, speed signals of the front wheels and rear wheels obtained by the speed sensor 2022, air pressure signals of the front wheels and rear wheels obtained by the air pressure sensor 2023, vehicle speed signals obtained by the vehicle speed sensor 2024, acceleration signals obtained by the acceleration sensor 2025, accelerator pedal depression amount signals obtained by the accelerator pedal sensor 2029, brake pedal depression amount signals obtained by the brake pedal sensor 2026, shift lever operation signals obtained by the shift lever sensor 2027, detection signals for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028, and the like.

[0184] The information service unit 2012 is composed of various devices such as a car navigation system, an audio system, a speaker, a television, and a radio for providing (outputting) 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 obtained from external devices via the communication module 2013 and the like to provide various multimedia information and multimedia services to passengers of the vehicle 2001.

[0185] The information service unit 2012 may include input devices for receiving input from the outside (such as keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.), and may also include output devices for implementing output to the outside (such as displays, speakers, LED lights, touch panels, etc.).

[0186] The driving assistance system unit 2030 is composed of various devices for preventing accidents or reducing the driver's driving load, such as millimeter wave radar, LiDAR (Light Detection and Ranging), camera, positioning device (such as GNSS, etc.), map information (such as high-definition (HD) map, autonomous driving vehicle (AV) map, etc.), gyroscope system (such as IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chip, AI processor, and one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 sends and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0187] The communication module 2013 can communicate with the microprocessor 2031 and the components of the vehicle 2001 via the communication port. For example, the communication module 2013 can send and receive data with the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheel 2007, the rear wheel 2008, the axle 2009, the microprocessor 2031 in the electronic control unit 2010, the memory (ROM, RAM) 2032, and the sensors 2021 to 29 via the communication port 2033.

[0188] The communication module 2013 can be controlled by the microprocessor 2031 of the electronic control unit 2010, and is a communication device that can communicate with an external device. For example, various information can be sent and received with the external device via wireless communication. The communication module 2013 can be located inside or outside the electronic control unit 2010. The external device can also be, for example, a base station, a mobile station, etc.

[0189] The communication module 2013 may also transmit at least one of the signals from the various sensors 2021-2029 input to the electronic control unit 2010, the information obtained based on the signals, and the information based on the input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication. The electronic control unit 2010, the various sensors 2021-2029, the information service unit 2012, etc. may also be referred to as an input unit that receives input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above input.

[0190] The communication module 2013 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) sent from an external device, and displays it on the information service unit 2012 of the vehicle 2001. The information service unit 2012 may also be referred to as an output unit that outputs information (for example, outputs information to a display, a speaker, etc. based on the PDSCH received by the communication module 2013 (or data / information decoded from the PDSCH)).

[0191] In addition, the communication module 2013 stores various information received from the external device in the memory 2032 that can be used by the microprocessor 2031. The microprocessor 2031 can also control the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheel 2007, the rear wheel 2008, the axle 2009, the sensors 2021 to 2029, etc. of the vehicle 2001 based on the information stored in the memory 2032.

[0192] (Supplementary Implementation Methods)

[0193] The above is a description of the embodiments of the present invention, but the disclosed invention is not limited to such an embodiment, and those skilled in the art should understand various variations, modifications, substitutions, replacements, etc. In order to facilitate the understanding of the invention, specific numerical examples are used for description, but unless otherwise specified, these numerical values ​​are only examples, and any appropriate value may also be used. The item distinction in the above description is not essential to the present invention, and the items recorded in more than two items can be combined and used as needed, and the items recorded in a certain item can be applied to the items recorded in another item (as long as there is no contradiction). The boundaries of the functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of the physical components. The actions of multiple functional units can be performed by one physical component, or the actions of one functional unit can be performed by multiple physical components. Regarding the processing steps described in the embodiment, the order of processing can be swapped if there is no contradiction. In order to facilitate the description of the processing, the base station 10 and the terminal 20 are described using a functional block diagram, but such a device can also be implemented by hardware, software, or a combination thereof. The software that operates according to the implementation mode of the present invention through the processor of the base station 10 and the software that operates according to the implementation mode of the present invention through the processor of the terminal 20 can also be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server and any other appropriate storage medium.

[0194] In addition, the notification of information is not limited to the form / implementation method described in the present disclosure, and other methods may also be used. For example, the notification of information may be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals or a combination thereof. In addition, RRC signaling may also be referred to as an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0195] Each form / embodiment described in the present disclosure may also be applied to a mobile communication system using LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal)), FRA (Future Radio Access), NR (new Radio), New Radio Access (NX), Future Generation Radio Access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE At least one of 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other appropriate systems, and next-generation systems that are expanded, modified, created, and specified based on these systems. In addition, multiple systems may be combined (for example, a combination of at least one of LTE and LTE-A and 5G, etc.) for application.

[0196] The processing steps, timing, and flow of each form / implementation described in this specification may be reversed in order if there is no contradiction. For example, the method described in this disclosure uses the order of examples to indicate the elements of various steps, but is not limited to the specific order indicated.

[0197] In this specification, specific actions performed by the base station 10 are sometimes also performed by its upper node according to the situation. In a network composed of one or more network nodes having the base station 10, various actions performed for communicating with the terminal 20 can be performed by at least one of the base station 10 and other network nodes other than the base station 10 (for example, MME or S-GW, etc., but not limited to these). In the above, the case where there is one other network node other than the base station 10 is illustrated, but the other network node may also be a combination of multiple other network nodes (for example, MME and S-GW).

[0198] The information or signals described in the present disclosure can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), and can also be input or output via a plurality of network nodes.

[0199] The input or output information can be stored in a specific location (e.g., a memory) or managed using a management table. The input or output information can be rewritten, updated, or appended. The output information can also be deleted. The input information can also be sent to other devices.

[0200] The determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), by a Boolean value (Boolean: true or false), or by comparison of numerical values ​​(for example, comparison with a predetermined value).

[0201] Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, shall be interpreted broadly to refer to commands, sets of commands, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0202] In addition, software, commands, information, etc. may also be sent and received via a transmission medium. For example, when software is sent from a web page, server, or other remote source using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.), at least one of these wired technology and wireless technology is included in the definition of transmission medium.

[0203] The information, signals, etc. described in the present disclosure may also be represented by any of a variety of different technologies. For example, the data, commands, instructions, information, signals, bits, symbols, chips, etc. that may be involved in the above description as a whole may also be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination of these.

[0204] In addition, the terms described in the present disclosure and the terms required for understanding the present disclosure may also be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may also be a signal (signaling). In addition, a signal may also be a message. In addition, a component carrier (CC) may also be referred to as a carrier frequency, a cell, a frequency carrier, etc.

[0205] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0206] In addition, the information, parameters, etc. described in the present disclosure may be represented by absolute values, relative values ​​to predetermined values, or other corresponding information. For example, wireless resources may also be indicated by indexes.

[0207] The names used for the above parameters are non-restrictive in any respect. Furthermore, the formulas etc. using these parameters may sometimes differ from those explicitly disclosed in the present disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by all appropriate names, and therefore the various names assigned to these various channels and information elements are non-restrictive in any respect.

[0208] In the present disclosure, the terms "base station (BS)," "wireless 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" and the like are used interchangeably. Sometimes, the base station is also referred to as macro cell, small cell, micro-micro cell, pico cell and the like.

[0209] A base station can accommodate one or more (for example, 3) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services through a base station subsystem (for example, a small base station RRH: Remote Radio Head for indoor use). Terms such as "cell" or "sector" refer to a part or the entirety of the coverage area of ​​at least one of the base station and the base station subsystem that provide communication services within the coverage area.

[0210] In the present disclosure, the base station sending information to the terminal may also be replaced by the base station instructing the terminal to perform a control / action based on the information.

[0211] In the present disclosure, terms such as “mobile station (MS)”, “user terminal (user terminal)”, “user equipment (UE)”, and “terminal” can be used interchangeably.

[0212] For mobile stations, those skilled in the art sometimes also use the following terms: subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other appropriate terms.

[0213] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a communication device, etc. In addition, at least one of the base station and the mobile station may also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to an object that can move, and the moving speed is arbitrary. In addition, of course, it also includes the case where the mobile body stops. The mobile body includes, for example, vehicles, transport vehicles, cars, motorcycles, bicycles, connected cars, shovel cars, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, trailers (rear cars), rickshaws, ships (ships and other watercraft), airplanes, rockets, artificial satellites, drones (registered trademark), multi-rotor helicopters (multicopters), quadcopters (quadcopters), balloons and objects mounted on them, and are not limited to these. In addition, the mobile body may also be a mobile body that drives autonomously based on operating instructions. It can be a means of transportation (such as a car, airplane, etc.), a mobile body that moves in an unmanned manner (such as a drone, an autonomous car, etc.), or a robot (manned or unmanned). In addition, at least one of the base station and the mobile station also includes a device that does not necessarily move during communication. For example, at least one of the base station and the mobile station may also be an IoT (Internet of Things) device such as a sensor.

[0214] In addition, the base station in the present disclosure may also be replaced by a user terminal. For example, a structure in which the communication between a base station and a user terminal is replaced by the communication between multiple terminals 20 (for example, it may also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.) may also apply various forms / implementations of the present disclosure. In this case, it may also be configured that the terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0215] Likewise, the user terminal in the present disclosure may also be replaced by a base station. In this case, the base station may also have the functions of the user terminal.

[0216] The terms "determining" and "determining" used in the present disclosure sometimes also include a variety of actions. "Determining" and "determining" may include, for example, considering matters that have been judged, calculated, calculated, processed, derived, investigated, searched (for example, searched in a table, database or other data structure), confirmed (ascertaining) as matters that have been "determined" or "determined", etc. In addition, "determining" and "determining" may include matters that have been received (for example, receiving information), transmitted (for example, transmitting information), input, output, accessed (for example, accessing data in a memory) as matters that have been "determined" or "determined", etc. In addition, "determining" and "determining" may include matters that have been resolved (resolving), selected (selecting), chosen (choosing), established (establishing), compared (comparing), etc. as matters that have been "determined" or "determined". That is, "judgment" and "decision" may include certain actions that are considered to be "judged" or "decided". In addition, "judgment (decision)" may also be replaced by "assuming", "expecting", "considering", etc.

[0217] The terms "connected", "coupled" or all variations of these terms are intended to indicate any direct or indirect connection or combination 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 combination or connection between elements may be a physical combination or connection, a logical combination or connection, or a combination of these. For example, "access" may be used instead of "connection". In the context of the present 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, and as some non-limiting and non-inclusive examples, electromagnetic energy having wavelengths in the wireless frequency domain, microwave region, and light (including both visible and invisible) region may be used to "connect" or "couple" to each other.

[0218] The reference signal may be referred to as RS (Reference Signal) for short, or may be referred to as a pilot signal (Pilot) according to the applied standard.

[0219] The phrase "according to" used in the present disclosure does not mean "only according to" unless otherwise expressly stated. In other words, the phrase "according to" means both "only according to" and "at least according to".

[0220] Any reference to an element using the designations "first," "second," etc. used in this disclosure does not necessarily limit 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. Therefore, a reference to a first element and a second element does not mean that only two elements can be taken or that the first element must precede the second element in any form.

[0221] The “unit” in the configuration of each of the above-mentioned devices may be replaced with a “section”, “circuit”, “device” or the like.

[0222] When the terms "include", "including" and their variations are used in the present disclosure, these terms are intended to be inclusive like the term "comprising". Furthermore, the term "or" used in the present disclosure does not mean an exclusive or.

[0223] A radio frame may be composed of one or more frames in the time domain. In the time domain, one or more frames may be referred to as a subframe. A subframe may also be composed of one or more time slots in the time domain. A subframe may also be a fixed time length (e.g., 1 ms) that is independent of a numerology.

[0224] A parameter set may be a communication parameter applied to at least one of the transmission and reception of a certain signal or channel. The parameter set may, for example, represent at least one of subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering processing performed by the transceiver in the frequency domain, specific windowing processing performed by the transceiver in the time domain, and the like.

[0225] A slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. A slot may be a time unit based on a parameter set.

[0226] A time slot may contain multiple mini-slots. Each mini-slot may be composed of one or more symbols in the time domain. In addition, a mini-slot may also be referred to as a sub-slot. A mini-slot may be composed of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in units of time greater than a mini-slot may be referred to as a PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be referred to as a PDSCH (or PUSCH) mapping type B.

[0227] A radio frame, a subframe, a time slot, a mini-time slot, and a symbol all represent time units for transmitting signals. A radio frame, a subframe, a time slot, a mini-time slot, and a symbol may be referred to by other corresponding names.

[0228] For example, one subframe may be referred to as a transmission time interval (TTI), multiple consecutive subframes may be referred to as a TTI, and one time slot or one mini time slot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (e.g., 1-13 symbols), or a period longer than 1ms. In addition, the unit representing a TTI may be referred to as a time slot, a mini time slot, etc. instead of a subframe.

[0229] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, the base station performs scheduling to allocate wireless resources (frequency bandwidth, transmission power, etc. that can be used in each terminal 20) to each terminal 20 in units of TTI. In addition, the definition of TTI is not limited to this.

[0230] TTI can be a transmission time unit of data packets (transport blocks), code blocks, code words, etc. after channel coding, or a processing unit such as scheduling and link adaptation. In addition, when TTI is given, the time interval (e.g., the number of symbols) to which the transport block, code block, code word, etc. is actually mapped can also be shorter than the TTI.

[0231] In addition, when one time slot or one mini time slot is called TTI, one or more TTIs (i.e., one or more time slots or one or more mini time slots) may also be the minimum time unit for scheduling. In addition, the number of time slots (mini time slots) constituting the minimum time unit for scheduling may also be controlled.

[0232] A TTI with a time length of 1 ms is also 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 time slot, etc. A TTI shorter than a normal TTI may also be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a mini-time slot, a sub-time slot, a time slot, etc.

[0233] In addition, for a long TTI (for example, a normal TTI, a subframe, etc.), it can be understood as a TTI with a time length exceeding 1ms, and for a short TTI (for example, a shortened TTI, etc.), it can be understood as a TTI with a TTI length less than that of a long TTI (long TTI) and greater than 1ms.

[0234] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain. In the frequency domain, it may include one or more consecutive subcarriers. The number of subcarriers included in an RB may be the same regardless of the parameter set, for example, it may be 12. The number of subcarriers included in an RB may also be determined according to the parameter set.

[0235] In addition, the time domain of an RB may include one or more symbols, and may be the length of one slot, one mini slot, one subframe, or one TTI. One TTI, one subframe, etc. may be composed of one or more resource blocks, respectively.

[0236] In addition, one or more RBs may also be referred to as a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, etc.

[0237] In addition, 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.

[0238] A bandwidth part (BWP) (also referred to as partial bandwidth, etc.) may also represent a subset of contiguous common RBs (common resource blocks) for a parameter set in a carrier. Here, the common RBs may be identified by the index of the RBs relative to the common reference point of the carrier. PRBs may be defined in a BWP and numbered within the BWP.

[0239] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for the terminal 20 within one carrier.

[0240] At least one of the set BWPs may be active, and it is not assumed that the terminal 20 transmits and receives a predetermined signal / channel outside the activated BWP. In addition, "cell", "carrier" and the like in the present disclosure may be replaced with "BWP".

[0241] The above structures of radio frames, subframes, time slots, mini-time slots, and symbols are merely examples. For example, the number of subframes included in a radio frame, the number of time slots per subframe or radio frame, the number of mini-time slots included in a time slot, the number of symbols and RBs included in a time slot or mini-time slot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length may be changed in various ways.

[0242] In the present disclosure, when an article is added by translation, such as a, an, and the in English, for example, the present disclosure also includes the case where the noun following the article is in plural form.

[0243] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other". In addition, the term may mean "A and B are different from C, respectively". The terms "separate" and "combined" may also be interpreted in the same way as "different".

[0244] Each form / implementation described in the present disclosure may be used alone or in combination, and may be switched depending on the execution. In addition, notification of scheduled information is not limited to being performed explicitly (e.g., notification of "yes X"), but may also be performed implicitly (e.g., notification of the scheduled information is not performed).

[0245] The present disclosure is 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 a modification and variation without departing from the subject matter and scope of the present disclosure as determined by the claims. Therefore, the purpose of the description of the present disclosure is to illustrate and not to have any limiting meaning on the present disclosure.

[0246] Description of symbols

[0247] 10 Base Station

[0248] 110 Sending Department

[0249] 120 Receiving Department

[0250] 130 Setting Department

[0251] 140 Control Department

[0252] 20 Terminal

[0253] 210 Sending Department

[0254] 220 Receiving Department

[0255] 230 Setting Department

[0256] 240 Control Department

[0257] 30 Core Network

[0258] 1001 Processor

[0259] 1002 Storage Device

[0260] 1003 Auxiliary storage device

[0261] 1004 Communication device

[0262] 1005 Input Device

[0263] 1006 Output Device

[0264] 2001 Vehicles

[0265] 2002 Drive Department

[0266] 2003 Steering

[0267] 2004 Accelerator pedal

[0268] 2005 Brake Pedal

[0269] 2006 Gear Lever

[0270] 2007 Front wheel

[0271] 2008 Rear wheel

[0272] 2009 Axle

[0273] 2010 Electronic Control Department

[0274] 2012 Information Services Department

[0275] 2013 Communication Module

[0276] 2021 Current Sensor

[0277] 2022 Speed ​​Sensor

[0278] 2023 Air Pressure Sensor

[0279] 2024 Vehicle speed sensor

[0280] 2025 Accelerometer

[0281] 2026 Brake pedal sensor

[0282] 2027 Gear lever sensor

[0283] 2028 Object Detection Sensor

[0284] 2029 Accelerator pedal sensor

[0285] 2030 Driving Assistance Systems Division

[0286] 2031 Microprocessor

[0287] 2032 memory (ROM, RAM)

[0288] 2033 communication port (IO port)

Claims

1. A terminal, wherein: The terminal has: a transmitting unit configured to transmit a signal for sharing an uplink signal to other terminals through short-range communication; and A communication unit cooperates with the other terminals to send the uplink signal to a base station or a network.

2. The terminal according to claim 1, wherein: The terminal further includes a receiving unit that receives information related to transmission of the uplink signal by the other terminal from the base station or the network. The transmitting unit transmits information related to transmission of the uplink signal to the other terminal through the short-range communication.

3. A terminal, wherein: The terminal has: a receiving unit that receives a signal for sharing an uplink signal from other terminals through short-range communication; and A sending unit cooperates with the other terminals to send the uplink signal to a base station or a network.

4. The terminal according to claim 3, wherein: The terminal further includes a control unit that executes in such a manner that a time from when the other terminal receives a signal for sharing the uplink signal to when the uplink signal is sent to the base station or the network in cooperation with the other terminal satisfies a predetermined terminal processing time.

5. A base station, wherein: The base station has: a control unit that assumes that an uplink signal of the first terminal is transmitted from the first terminal in cooperation with the second terminal; and A transmitting unit that transmits information related to the transmission of the uplink signal by the second terminal to the first terminal or the second terminal.

6. A communication method performed by a terminal, wherein: The communication method comprises the following steps: transmitting a signal for sharing an uplink signal to other terminals through short distance communication; and Cooperate with the other terminals to send the uplink signal to a base station or a network.

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