Wireless relay device and wireless relay method

Abstract

A wireless relay device is provided with: a communication unit that receives, from a base station, signaling including control information pertaining to a relay function; a control unit that controls a relay function on the basis of the control information; and a relay unit that performs a relay function of receiving a first signal from the base station, transmitting the first signal to a terminal, receiving a second signal from the terminal, and transmitting the second signal to the base station, the control unit applying to the relay function a plurality of controls of different time units as objects notified by the control information.

Description

Technical Field

[0001] The invention relates to a wireless relay device and a wireless relay method in a wireless communication system. Background Art

[0002] In 3GPP (registered trademark) (3rd Generation Partnership Project), research on a wireless communication method called 5G or NR (New Radio) (hereinafter referred to as "NR") is being conducted to achieve further increases in system capacity, further increases in data transmission speed, and further reductions in latency in wireless intervals. In 5G, various wireless technologies and network architectures are being studied to meet the requirements of achieving a throughput of more than 10 Gbps and a latency of less than 1 ms in wireless intervals (e.g., Non-Patent Document 1).

[0003] In the next generation of communications, high frequency bands are expected to be used. From the perspective of the reduction in the number of scatterers, the reduction in shadow effects, and the increase in distance attenuation due to the characteristics of this high frequency band, it is required to improve the communication quality. Beam control and environments that need to ensure communication quality are envisioned.

[0004] For example, in high frequency bands, there is a problem that blind spots are easily generated due to the strong straightness of radio waves, etc. Therefore, attempts have been made to improve communication quality in a multipath environment by using passive repeaters or active reflectors (RIS: Reconfigurable Intelligent Surface), smart repeaters that receive and amplify signals and re-radiate them, etc. (e.g., Non-Patent Document 2).

[0005] Prior art literature

[0006] Non-patent literature

[0007] Non-patent document 1: 3GPP TS 38.300 V17.1.0 (2022-06)

[0008] Non-patent document 2: NTT Docomo, "White Paper 5G Advanced and 6G" (2021-02, version 3.0) Internet <URL:https: / / www.nttdocomo.co.jp / binary / pdf / corporate / technology / whitepaper_6g / DOCOMO_6G_White_PaperJP_20210203.pdf>

[0009] Non-patent document 3: 3GPP TR 38.867 V0.1.0 (2022-05)

[0010] Non-patent document 4: 3GPP TS 38.213 V17.2.0 (2022-06) Summary of the invention

[0011] Problems to be solved by the invention

[0012] As described above, research is underway on wireless relay devices such as reflectors or smart repeaters that relay radio waves by reflecting or transmitting radio waves from a radio wave generating source such as a base station to a radio wave receiving destination such as a terminal. In particular, the granularity of signaling in the time domain used by a wireless relay device controlled by a network to control the relaying of wireless signals between a base station terminal is sometimes different.

[0013] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to control relay of wireless signals in the time domain by a wireless relay device controlled by a network.

[0014] Means for solving problems

[0015] According to the disclosed technology, a wireless relay device is provided, wherein the wireless relay device comprises: a communication unit, which receives signaling containing control information related to a relay function from a base station; a control unit, which controls the relay function based on the control information; and a relay unit, which performs a relay function of receiving a first signal from the base station, sending the first signal to a terminal, receiving a second signal from the terminal and sending the second signal to the base station, and the control unit applies a plurality of controls with different time units as objects notified by the control information to the relay function.

[0016] Effects of the Invention

[0017] According to the disclosed technology, a wireless relay device controlled by a network can control relaying of wireless signals in the time domain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a diagram for explaining a wireless communication system in an embodiment of the present invention.

[0019] Figure 2 It is a diagram showing an example of the functional configuration of the base station 10 in the embodiment of the present invention.

[0020] Figure 3 This is a diagram showing an example of the functional configuration of the terminal 20 in the embodiment of the present invention.

[0021] Figure 4This is a diagram showing an example of the functional configuration of the wireless relay device 30 in the embodiment of the present invention.

[0022] Figure 5 It is a diagram showing an operation example of the wireless relay device 30 in the embodiment of the present invention.

[0023] Figure 6 is a diagram showing an example of communication in a high frequency band.

[0024] Figure 7 This is a diagram showing an example of a reflective type wireless relay device 30 in the embodiment of the present invention.

[0025] Figure 8 This is a diagram showing an example of a transmission-type wireless relay device 30 in the embodiment of the present invention.

[0026] Fig. 9 It is a diagram showing an example of a network controlled repeater in the embodiment of the present invention.

[0027] Fig.10 This is a diagram for explaining example (1) of beam notification in an embodiment of the present invention.

[0028] Fig.11 This is a diagram for explaining example (2) of beam notification in an embodiment of the present invention.

[0029] Fig.12 This is a diagram for explaining example (3) of beam notification in an embodiment of the present invention.

[0030] Fig.13 This is a diagram for explaining example (4) of beam notification in an embodiment of the present invention.

[0031] Fig.14 This is a diagram for explaining example (1) of ON-OFF notification in the embodiment of the present invention.

[0032] Fig.15 This is a diagram for explaining example (2) of ON-OFF notification in the embodiment of the present invention.

[0033] Fig.16 This is a diagram for explaining example (3) of ON-OFF notification in the embodiment of the present invention.

[0034] Fig.17 This is a diagram for explaining example (4) of ON-OFF notification in the embodiment of the present invention.

[0035] Fig.18 This is a diagram showing an example of the hardware configuration of the base station 10 , the terminal 20 , or the wireless relay device 30 in the embodiment of the present invention.

[0036] Fig.19 1 is a diagram showing an example of the structure of a vehicle 2001 in the embodiment of the present invention. DETAILED DESCRIPTION

[0037] 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.

[0038] 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.

[0039] 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-".

[0040] 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.).

[0041] 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 .

[0042] Figure 1 1 is a diagram for explaining a wireless communication system in an embodiment of the present invention. Figure 1 As shown, the wireless communication system in the embodiment of the present invention includes a base station 10 and a terminal 20. The base station 10 and the terminal 20 can be multiple.

[0043] 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 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 or a subslot, and the TTI can be a subframe.

[0044] The base station 10 can perform carrier aggregation for bundling a plurality of cells (a plurality of CCs (Component Carriers)) to communicate with the terminal 20. In carrier aggregation, one primary cell (PCell) and one or more secondary cells (SCells, Secondary Cells) are used.

[0045] The base station 10 sends synchronization signals and system information to the terminal 20. The synchronization signals are, for example, NR-PSS and NR-SSS. The system information is sent, for example, via NR-PBCH or PDSCH, and is also called broadcast information. Figure 1As 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). In addition, here, the content sent through a control channel such as PUCCH and PDCCH is called a control signal, and the content sent through a shared channel such as PUSCH and PDSCH is called data, but such a name is only an example.

[0046] 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 1 As 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 may be referred to as UE and the base station 10 may be referred to as gNB.

[0047] The terminal 20 can perform carrier aggregation for bundling a plurality of cells (a plurality of CCs) to communicate with the base station 10. In carrier aggregation, one primary cell and one or more secondary cells are used. Alternatively, a PUCCH-SCell having a PUCCH may be used.

[0048] In the wireless communication system according to the embodiment of the present invention, as an example, the base station 10 is a wireless base station operating in accordance with 5G or 6G, and forms a cell. In addition, the cell is a relatively large cell, which is called a macro cell.

[0049] Base stations 10A to 10D are base stations operating in accordance with 5G or 6G. Base stations 10A to 10D respectively form cells A to D that are smaller in size than macro cells. Cells A to D may also be referred to as small cells or macro cells, etc. Figure 1 As shown, cells A to D may also be formed to be included in the macro cell.

[0050] A macro cell can generally be interpreted as a communication area with a radius of several hundred meters to several tens of kilometers covered by a base station. In addition, a small cell can also be interpreted as a general term for cells with low transmission power and covering an area smaller than a macro cell.

[0051] In addition, the base station 10 and the base stations 0A to 10D may also be expressed as gNodeB (gNB) or BS (BaseStation), etc. In addition, the terminal 20 may also be expressed as UE or MS, etc. In addition, the specific structure of the wireless communication system including the number or type of base stations and terminals is not limited to Figure 1 Example shown.

[0052] In addition, the wireless communication system is not necessarily limited to a wireless communication system that complies with 5G or 6G. For example, the wireless communication system may be a wireless communication system that is the next generation of 6G, or a wireless communication system that complies with LTE.

[0053] As an example, the base station 10 and the base stations 10A to 10D perform wireless communications in accordance with 5G or 6G with the terminal 20. The base station 10 and the base stations 10A to 10D and the terminal 20 may also support massive MIMO (Massive MIMO) that generates a more directional beam by controlling wireless signals transmitted from a plurality of antenna elements, carrier aggregation (CA) that bundles a plurality of component carriers (CCs), dual connectivity (DC) that simultaneously communicates between the terminal 20 and two NG-RAN nodes, and IAB (Integrated Access and Backhaul) that integrates wireless backhaul between wireless communication nodes such as gNB and wireless access to the terminal 20.

[0054] In addition, the wireless communication system can also support higher frequency bands than the following frequency range (FR) specified in 3GPP version 15. For example, 410MHz-7.125GHz can be supported as FR1, and 24.25GHz-52.6GHz can be supported as FR2. Furthermore, the wireless communication system can also support frequency bands exceeding 52.6GHz up to 114.25GHz. This frequency band can also be called a millimeter wave band.

[0055] Here, the base station 10 supporting massive MIMO can transmit beams. Massive MIMO generally means MIMO communication using antennas with more than 100 elements, which can perform wireless communication at a higher speed than before through the multiplexing effect of multiple streams. In addition, high-level beamforming can also be performed. The beam width can be dynamically changed according to the frequency band used or the state of the terminal 20. In addition, by using a narrow beam, an increase in the received signal power based on the beamforming gain can be achieved. Furthermore, effects such as reduction in interference and effective use of wireless resources can be expected.

[0056] In addition, the wireless communication system may include a wireless relay device 30. In the embodiment of the present invention, as an example, the wireless relay device 30 may also be a reflector (RIS), a phase control reflector, a passive repeater, an IRS (Intelligent Reflecting Surface), etc. As a specific example of a reflector (RIS: Reconfigurable Intelligent Surface), it may also be a reflector called a metamaterial reflector, a dynamic metasurface, a metasurface lens, etc. (for example, non-patent document 2).

[0057] In the embodiment of the present invention, the wireless relay device 30, for example, relays a wireless signal sent from the base station 10A. In the description of the embodiment of the present invention, "relay" may refer to at least one of "reflection", "transmission", "convergence (concentrating radio waves at approximately one point)" and "diffraction". The terminal 20 is capable of receiving the wireless signal relayed by the wireless relay device 30. Furthermore, the wireless relay device 30 may relay the wireless signal sent from the terminal 20, and may also relay the wireless signal sent from the base station 10.

[0058] As an example, the wireless relay device 30 can change the phase of the wireless signal relayed to the terminal 20. From this point of view, the wireless relay device 30 can also be called a phase variable reflector. In addition, in the present embodiment, the wireless relay device 30 sometimes has a function of relaying by changing the phase of the wireless signal, but is not limited to this. In addition, the wireless relay device 30 can also be called a repeater, a relay device, a reflect array, an IRS, or a transmission array.

[0059] In addition, in the embodiment of the present invention, the wireless relay device 30 such as RIS can also be called a battery-less device, a metamaterial functional device, an intelligent reflecting surface, a smart repeater, etc. As an example, the wireless relay device 30 such as RIS or a smart repeater can also be defined as having the functions shown in the following 1)-5).

[0060] 1) It may also have a function of receiving a signal sent from the base station 10. The signal may be a DL signal, SSB (SS / PBCH block), PDCCH, PDSCH, DM-RS (Demodulation Reference Signal), PT-RS (Phase Tracking Reference Signal), CSI-RS (Channel State Information Reference Signal), RIS dedicated signal, etc. It may also have a function of receiving a signal that transmits information related to the metamaterial function. In addition, it may also have a function of sending the signal to the terminal 20. SSB may be a signal containing a synchronization signal and broadcast information.

[0061] 2) It may also have a function of sending a signal to the base station 10. The signal may be a UL signal, PRACH, PUCCH, PUSCH, DM-RS, PT-RS, SRS (Sounding Reference Signal), RIS dedicated signal, etc. It may have a function of sending information related to the metamaterial function. In addition, it may also have a function of receiving the signal from the terminal 20.

[0062] 3) It may also have a frame synchronization function with the base station 10. In addition, it may also have a frame synchronization function with the terminal 20.

[0063] 4) It may also have a function of reflecting a signal sent from the base station 10 or the terminal 20. For example, the reflection function may be a function related to phase change, a function related to beam control (for example, TCI (Transmission Configuration Indication)-state, a function related to QCL (Quasi Co Location) control, application of beam selection, application of spatial filter / precoding weight selection).

[0064] 5) It may also have a power change function of a signal transmitted from the base station 10 or the terminal 20. For example, the power change function may be power amplification.

[0065] In addition, "receive and transmit" or "relay" in the wireless relay device 30 such as RIS or intelligent repeater may mean that the following function A is performed but the following function B is not performed and the transmission is performed.

[0066] Function A: Apply phase shifter.

[0067] Function B: without compensation circuit (e.g., amplification, filter)

[0068] As another example,

[0069] Function A: Apply phase shifter and compensation circuit.

[0070] Function B: without frequency conversion.

[0071] Furthermore, in the wireless relay device 30 such as RIS, the amplitude may be amplified when the phase is changed. Furthermore, "relay" in the wireless relay device 30 such as RIS may also mean directly sending the received signal without performing layer 2 or layer 3 processing, directly sending the signal received at the physical layer level, or directly sending the received signal without interpreting the signal (in this case, the phase may be changed, the amplitude may be amplified, etc.).

[0072] (Device Structure)

[0073] Next, a functional configuration example of the base station 10, the terminal 20, and the wireless relay device 30 that perform the processing and operations in the embodiment of the present invention is described. The base station 10, the terminal 20, and the wireless relay device 30 include functions for performing the embodiments described later. However, the base station 10, the terminal 20, and the wireless relay device 30 may each have only one of the functions in the embodiments.

[0074] <Base station 10>

[0075] Figure 2 1 is a diagram showing an example of the functional configuration of the base station 10. Figure 2 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 2 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 110 and the receiving unit 120 can also be called a communication unit.

[0076] 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, DL data, etc. to the terminal 20. In addition, the transmitting unit 110 transmits the setting information described in the embodiment, etc.

[0077] The setting unit 130 stores the preset setting information and various setting information sent to the terminal 20 in the storage device, and reads it from the storage device as needed. The control unit 140 performs, for example, resource allocation and overall control of the base station 10. In addition, 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 receiving unit 120. In addition, the transmission unit 110 and the receiving unit 120 may be referred to as a transmitter and a receiver, respectively.

[0078] <Terminal 20>

[0079] Figure 3 2 is a diagram showing an example of the functional structure of the terminal 20. Figure 3 As shown, the terminal 20 includes a transmitting unit 210 , a receiving unit 220 , a setting unit 230 , and a control unit 240 . Figure 3 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 called a communication unit.

[0080] 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 transmitting unit 210 sends HARQ-ACK, and the receiving unit 220 receives the setting information described in the embodiment, etc.

[0081] The setting unit 230 stores various setting information received by the receiving unit 220 from the base station 10 in the storage device, 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 as a whole. In addition, the functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220. In addition, the transmitting unit 210 and the receiving unit 220 may be referred to as a transmitter and a receiver, respectively.

[0082] <Wireless Relay Device 30>

[0083] Figure 4 FIG. 2 is a diagram showing an example of the functional configuration of the wireless relay device 30 in the embodiment of the present invention. Figure 4 As shown, the wireless relay device 30 includes a transmitting unit 310, a receiving unit 320, a control unit 330, a variable unit 340, and an antenna unit 350. As long as the actions involved in the embodiments of the present invention can be performed, the functional distinction and the names of the functional units can be arbitrary. The transmitting unit 310 and the receiving unit 320 can also be called a communication unit.

[0084] The antenna unit 350 includes at least one antenna connected to the variable unit 340. For example, the antenna unit 350 may also be configured as an array antenna. In the embodiment of the present invention, the antenna unit 350 is sometimes particularly referred to as a relay antenna. In addition, the variable unit 340 and the antenna unit 350 may also be referred to as a relay unit.

[0085] The variable unit 340 is connected to the antenna unit 350 and can change the phase, load, amplitude, etc. For example, the variable unit 340 can also be a variable phase device, a phase shifter, an amplifier, etc. For example, by changing the phase of the radio wave reaching the relay antenna from the radio wave source, the direction or beam of the radio wave can be changed.

[0086] The control unit 330 is a control unit that controls the variable unit 340. In the embodiment of the present invention, the control unit 330 functions as a control unit that controls the relay state when relaying is performed without interpreting the signal of the radio wave from the base station 10 or the terminal 20. Here, the control unit 330 can change the relay state based on the control information received from the base station 10 or the terminal 20 via the communication unit, or can change the relay state based on the reception state of the radio wave from the base station 10 or the terminal 20. For example, the control unit 330 can select an appropriate receiving beam and a transmitting beam (direction) based on the control information of SSB, etc., and control the variable unit 340. Similarly, the control unit 330 can also select an appropriate combination of the receiving direction and the transmitting direction based on the reception state, based on the criteria such as the reception quality or the maximum reception power, and control the variable unit 340.

[0087] In addition, in the embodiment of the present invention, the control unit 330 can control the variable unit 340 based on information related to the propagation path between the terminal 20 or the base station 10A and the antenna unit 350 (including information estimated based on the reception state and control information, the same below). For example, the control unit 330 can use a well-known method such as an active repeater or RIS to change the phase of the radio wave received from the base station 10A without using transmission power, thereby relaying to a specific direction such as the radio wave reception destination (in this case, the terminal 20). Specifically, the control unit 330 controls the variable unit 340 based on the estimated propagation path information H. PT and H RP , control the phase of the wireless signal to relay to the terminal 20 or the base station 10A. That is, the phase of the array antenna is changed according to the same principle as beamforming, so that the radio wave can be relayed in a specific direction. In addition, the wireless relay device 30 can also perform relaying in a non-powered manner by only controlling (changing) the phase of the wireless signal (radio wave) through the control unit 330 without amplifying the power of the relayed wireless signal.

[0088] In addition, in the embodiment of the present invention, the control unit 330 may also obtain information according to the reception state. In addition, the receiving unit 320 may obtain control information from the base station 10A or the terminal 20. For example, the receiving unit 320 may receive various signals such as SSB (including various signals exemplified in the above functions) sent from the base station 10A or the terminal 20 as control information.

[0089] In addition, the control unit 330 may estimate the propagation path information (H) between the radio wave source (for example, the base station 10A or the terminal 20) and the antenna unit 350 based on the reception state (for example, the change in the received power) during the control of the variable unit 340. PT and H RP ).

[0090] Specifically, the propagation path information (propagation channel information) related to each propagation path is information such as amplitude or phase, and in the embodiment of the present invention, is information estimated about the propagation path of the radio wave reaching the antenna unit 350. As an example, the control unit 330 may estimate the propagation path information of the antenna unit 350 based on the change in the received power when the phase of the variable unit 340 of the array antenna unit 350 is switched to quadrature according to the same principle as I / Q (In-phase / Quadrature) detection.

[0091] Figure 5 FIG. 2 is a diagram showing an operation example of the wireless relay device 30 in the embodiment of the present invention. Figure 5 As shown, as an example, the wireless relay device 30 is interposed between the base station 10A (or other base stations 10, etc.) and the terminal 20, and relays (reflects, transmits, collects, diffracts, etc.) wireless signals transmitted and received between the base station 10A and the terminal 20.

[0092] As a specific example, when the wireless quality is good, the base station 10A and the terminal 20 directly transmit and receive wireless signals without passing through the wireless relay device 30. On the other hand, when the wireless quality deteriorates, such as when there is an obstruction between the base station 10A and the terminal 20, the wireless relay device 30 relays the wireless signals transmitted and received between the base station 10A and the terminal 20.

[0093] Specifically, the wireless relay device 30 estimates the propagation path information H between the radio wave source such as the base station 10A or the terminal 20 and the relay antenna based on the change in the received power when the variable unit 340 such as the variable phase shifter is controlled. PT , H RT According to the estimated propagation path information, the variable unit 340 such as the variable phase shifter is controlled, thereby relaying the wireless signal to the radio wave receiving destination such as the terminal 20. PT , HRT The wireless relay device 30 may also control the variable unit 340 such as a variable phase shifter according to the control information received from the base station 10A or the terminal 20, thereby relaying the wireless signal to the radio wave receiving destination such as the base station 10A or the terminal 20.

[0094] Here, the propagation path or propagation channel is each communication path of wireless communication, and here is the communication path between each transmitting and receiving antenna (base station antenna and terminal antenna in the figure, etc.).

[0095] As an example, the wireless relay device 30 includes: an antenna unit 350, which has a small multi-element antenna that supports large-scale MIMO; and a variable unit 340, which has a variable phase shifter or phase shifter that changes the phase of a wireless signal, essentially an electric wave, to a specific phase, and the variable unit 340 is used to control the phase of the electric wave relayed to the terminal 20 or the base station 10A.

[0096] Figure 6 is a diagram showing an example of communication in a high frequency band. Figure 6 As shown, when using a high frequency band of several GHz to tens of GHz or more, a blind spot is easily generated due to the strong straightness of the radio waves. When there is line of sight between the base station 10A and the terminal 20, even when using this high frequency band, the wireless communication between the base station 10A and the terminal 20 is not affected. On the other hand, for example, when the field of view between the base station 10A and the terminal 20 is blocked by an obstruction such as a building or a tree, the wireless quality is greatly degraded. That is, when the terminal 20 moves to a blind spot blocked by an obstruction, the communication may be interrupted.

[0097] When considering the existence of applications (remote operation, etc.) that effectively utilize high-speed, large-capacity, and low-latency characteristics, it is important to eliminate blind spots and ensure the connection between base stations and terminals so that communications within the wireless communication system are not interrupted.

[0098] Therefore, a technology has been developed that can relay radio waves between the base station 10A and the terminal 20, such as radio wave propagation control devices such as RIS or intelligent repeaters. In this way, by controlling the propagation characteristics of base station signals, communication characteristics can be improved, and coverage can be expanded without the need for a signal source, and installation and operation costs caused by the addition of base stations can be reduced.

[0099] In the past, there are passive and active types of radio wave propagation control devices. Although the passive type has the advantage of not requiring control information, it cannot follow the moving object or environmental changes. On the other hand, although the active type has the disadvantage of requiring control information and increasing the overhead, it can variably control the propagation characteristics of the radio wave by changing the load (phase) state of the control antenna, and can also follow the moving object and environmental changes.

[0100] There are two types of active wave propagation control devices and control methods, namely feedback (FB) specification and propagation path information specification. In the FB specification, the variable type wave propagation control device makes the terminal 20 and the like feedback the communication state when the load (phase) state is randomly changed, and searches for the best condition. On the other hand, in the propagation path information specification, the load state is determined based on the propagation path information between the base station and the wave propagation control device, and the best wave propagation control can be performed. In this embodiment, either type can be applied.

[0101] In addition, as relay methods, there are types such as reflection, transmission, diffraction, and convergence, but in this embodiment, as an example, the following describes the structural examples of the reflection type and the transmission type (for the diffraction type and the convergence type, refer to non-patent document 2, etc.).

[0102] Figure 7 FIG. 2 is a diagram showing an example of a reflective type wireless relay device 30 in an embodiment of the present invention. Figure 7 An example of the system configuration of the reflection-type wireless relay device 30 will be described. Figure 7 1 is a diagram showing the relationship between the transmission antenna Tx of the base station 10A, etc., the relay antenna Sx of the transmission type wireless relay device 30, and the reception antenna Rx of the terminal 20, etc. Figure 7 As shown, in an embodiment of the present invention, taking MIMO as an example, there are multiple propagation paths between Tx-Sx and multiple propagation paths between Sx-Rx, and the wireless relay device 30 controls the variable unit 340 including a variable phase shifter having a relay antenna Sx to relay radio waves.

[0103] like Figure 7 As shown in FIG. 1 , in the case of the reflection type, the array-shaped relay antennas are arranged facing the same direction. Thus, the propagation path of the relay antenna can be estimated based on the reception state observed when the phase conditions of the relay antenna are changed a plurality of times.

[0104] Figure 8 FIG. 2 is a diagram showing an example of a transmission-type wireless relay device 30 in an embodiment of the present invention. Figure 8 An example of the system configuration of the transmission-type wireless relay device 30 will be described. Figure 8 1 is a diagram showing the relationship between the transmission antenna Tx of the base station 10A, etc., the relay antenna Sx of the transmission type wireless relay device 30, and the reception antenna Rx of the terminal 20, etc. Figure 8As shown, in an embodiment of the present invention, taking MIMO as an example, there are multiple propagation paths between Tx-Sx and multiple propagation paths between Sx-Rx. As shown in the figure, the wireless relay device 30 relays the radio waves arriving from one side to the other side via a variable portion 340 such as a variable phase shifter of the relay antenna Sx. In this way, in the case of the transmission type, the reference antenna on the left side of the figure and the relay antenna on the right side of the figure are respectively configured as a pair and facing opposite directions, so that the radio waves arriving from one side can be relayed to the other side. Whether it is a transmission type or a reflection type, it is configured to be able to detect the power reaching the relay antenna by a power detector, etc. to measure the receiving state. In addition, based on the received signal observed when the phase condition of the relay antenna is changed multiple times, the propagation path of the relay antenna can be estimated.

[0105] For example, in future networks such as 6G, higher quality is required than 5G. For example, ultra-high speed at the tera-bps level, high reliability and low latency at the optical communication level, etc. In addition, it is necessary to consider ultra-coverage extension, ultra-long-distance communication, ultra-reliability communication, virtual cells, flexible networks, mesh networks, side link enhancement, RIS or smart repeater design.

[0106] In order to achieve this quality, it is envisioned to use very high frequencies, such as terahertz waves. For example, when using very high frequencies such as terahertz waves, the advantages are envisioned to be the high speed brought by the use of ultra-wideband and the low latency brought by the shortening of the symbol length. On the other hand, it is also envisioned that there are disadvantages such as narrow coverage due to the large attenuation rate and reduced reliability due to the high straightness. For each location where 6G communication is required, it is required to study how to ensure redundancy, that is, how to increase the number of transmission points for communication.

[0107] As described above, RIS reflects or transmits the beam transmitted from the base station 10 or the terminal 20 in a predetermined direction and delivers it to the terminal 20 or the base station 10. The passive RIS is a device that does not change the reflection angle or beam width according to the position of the mobile station, does not require control information, and on the other hand, it is difficult to perform precise beam control. The active RIS is a device that changes the reflection angle and beam width according to the position of the mobile station, and can perform precise beam control, but on the other hand, since control information is required, the overhead increases. Through RIS, the number of transmission points of communication can be increased.

[0108] In addition, RIS may be any of the names shown in 1) to 5) below, but is not limited thereto.

[0109] 1) Battery less device

[0110] 2) Metamaterial functional devices

[0111] 3) Intelligent reflecting surface

[0112] 4) Smart repeater

[0113] 5) Network-controlled repeater

[0114] The RIS may be any device as long as it has a predetermined function. The predetermined function may be, for example, at least one of the following 1) and 2).

[0115] 1) UE functions

[0116] Function to receive signals sent from the base station 10 (e.g., DL signals, SSB, PDCCH, PDSCH, DM-RS, PT-RS, CSI-RS, RIS dedicated signals). Through this receiving function, information related to the following 2) meta-material function can also be received. Function to send signals to the base station 10 (e.g., UL signals, PRACH, PUCCH, PUSCH, DM-RS, PT-RS, SRS, RIS dedicated signals). Through this sending function, information related to the following 2) meta-material function can also be sent. Function to synchronize frames with the base station 10.

[0117] 2) Metamaterial Functions

[0118] Function of reflecting the signal sent from the base station 10 or the terminal 20 (e.g., phase change). The signal can be reflected by changing the phase for each of the multiple reflective elements of the RIS, or by making a common phase change through the multiple reflective elements. Functions related to beam control (e.g., functions related to the control of TCI-state and QCL, selection and application of beams, selection and application of spatial filters / precoding weights). Function of changing the power of the signal sent from the base station 10 or the terminal 20 (e.g., power amplification). The power can be changed differently for each reflective element of the RIS, or by making a common power change through the multiple reflective elements.

[0119] "Receiving and transmitting" in RIS can also mean reflecting radio waves / signals. The terms "base station" and "terminal" are used below, but they are not limited to these and can also be replaced by communication devices. RIS can also be replaced by smart repeaters, repeaters, etc.

[0120] For example, RIS may also operate according to the assumptions shown in the following 1)-6).

[0121] 1) Network operators set up RIS

[0122] 2) RIS is fixed and does not move.

[0123] 3) RIS only relays the signal from one base station.

[0124] 4) Capable of receiving and sending control signals.

[0125] 5) Work in half-duplex mode

[0126] 6) Single RIS environment

[0127] Research is underway on network-controlled repeaters (e.g., non-patent document 3) that are wireless relay devices controlled by the network. Network-controlled repeaters are different from conventional amplification and forwarding repeaters, and can, for example, control beams, timing, DL or UL, ON or OFF, and transmission power from the network. Hereinafter, "network-controlled repeaters" are also referred to as "repeaters."

[0128] To extend the coverage in the FR1 and FR2 bands, network controlled repeaters are used as in-band RF repeaters. In particular, configurations for FR2 in outdoor scenarios and O2I (outdoor to indoor) scenarios are envisioned. For example, a single hop and non-mobile environment can also be envisioned as an environment for a network controlled repeater. In addition, the network controlled repeater can also be transparent to the UE. In addition, the network controlled repeater is able to maintain both the gNB-repeater link and the repeater-UE link at the same time.

[0129] The following research has been conducted on side control information from a network control repeater.

[0130] Information related to beamforming

[0131] Information related to the timing of sending or receiving

[0132] Information related to UL-DL TDD settings

[0133] ON-OFF information for interference control and power saving

[0134] Power control for interference control

[0135] In addition, side control information based on L1 and L2 signaling is being studied. In addition, identification and authentication of network-controlled repeaters is being studied.

[0136] Fig. 9 FIG. 1 is a diagram showing an example of a network-controlled repeater in an embodiment of the present invention. A network-controlled repeater (NCR) can be configured as follows: Fig. 9 As shown. Hereinafter, the network control repeater is also recorded as NCR. NCR-MT (Mobile Termination) can be defined as a device having the function of communicating with the base station 10 via a control link (Control link, C-link). For example, it is possible to exchange side control information via the control link. The control link can be based on the NR-Uu interface.

[0137] NCR-Fwd (Forwarding) can be defined as a device that has the function of amplifying and forwarding UL and DL RF signals between the base station 10 and the terminal 20 via a backhaul link and an access link. The operation of NCR-Fwd can be controlled based on the side control information received from the base station 10. Fig. 9 As shown, the backhaul link corresponds to the communication between the base station 10 and the NCR-Fwd, and the access link corresponds to the communication between the terminal 20 and the NCR-Fwd.

[0138] For example, in FR2, information about beams is useful and recommended as side control information for controlling at least the actions of NCR 30 for the access link. As notification about beams in the access link, the index of the beam or the index of the source RS such as TCI indication is assumed.

[0139] In order to indicate the beam in the access link for DL ​​transmission to NCR-Fwd, for example, NCR30 can act as shown in the following 1)-11). The actions shown in the following 1)-11) are set to "Action A". In addition, the gNB transmit beam ID and / or the relay DL transmit beam ID are recorded as gNB transmit beam ID / relay DL transmit beam ID below.

[0140] 1) The sequence of gNB transmit beam ID / relay DL transmit beam ID can also be notified. This sequence can also be applied to the sequence of time units for notifying the beam ID applied per time unit.

[0141] 2) A gNB transmit beam ID / repeater DL transmit beam ID may also be notified. The beam ID may also be applied to a sequence of time units.

[0142] 3) A periodic pattern may also be notified. A period and an offset may also be notified. As the beam ID applied to each time unit included in the period, a sequence of gNB transmit beam IDs / relay DL transmit beam IDs may be notified.

[0143] 4) A periodic pattern may also be notified. A period and an offset may also be notified. A gNB transmit beam ID / relay DL transmit beam ID may be notified as a beam ID applied to each time unit included in the period.

[0144] 5) Existing gNBs for DL ​​channels or reference signals (PDSCH, PDCCH, SSB, CSI-RS) can also be used to send beam notifications. For example, it can be cell-specific or a group-common RNTI can be used.

[0145] 6) PDSCH scheduling DCI (DCI format 1_X) can also be used. The notified gNB transmit beam ID / relay DL transmit beam ID and the corresponding relay DL transmit beam can be applied to the time slot and codeword notified in the time domain resource field of the PDSCH scheduling DCI.

[0146] 7) SPS (Semi persistent scheduling) can also be used for setting or activation. The notified gNB transmit beam ID / relay DL transmit beam ID and the corresponding relay DL transmit beam can be applied to the time slots and symbols notified by the SPS setting and SPS activation DCI based on RRC signaling.

[0147] 8) A unified TCI state may be used to notify DCI. The notified gNB transmit beam ID / relay DL transmit beam ID and the corresponding relay DL transmit beam may be applied starting from the beginning slot or symbol that is X slots or symbols later than the last slot or symbol of the PUCCH carrying the HARQ-ACK corresponding to the DCI.

[0148] 9) The gNB transmit beam can be notified according to each gNB DL RS resource.

[0149] 10) The relay DL transmission beam can be notified according to each relay DL RS resource.

[0150] 11) The relay DL transmit beam can be notified according to each gNB DL RS resource.

[0151] In order to indicate the beam in the access link for UL reception of NCR-Fwd, for example, NCR 30 may also perform actions as shown in the following 1)-7). The actions shown in the following 1)-7) are set as "Action B".

[0152] 1) A sequence of UL reception beam IDs may also be notified to the relay. This sequence may also be applied to a sequence of time units for notifying a beam ID applied per time unit.

[0153] 2) A repeater may also be informed of the UL receive beam ID. The beam ID may also be applied to a sequence of time units.

[0154] 3) A periodic pattern may be notified. A period and an offset may be notified. A sequence of UL reception beam IDs may be notified to the relay as the beam ID applied to each time unit included in the period.

[0155] 4) A periodic pattern may be notified. A period and an offset may be notified. A single repeater UL reception beam ID may be notified as a beam ID applied to each time unit included in the period.

[0156] 5) PUSCH scheduling DCI (DCI format 0_X) may also be used. The notified relay UL receive beam ID and the corresponding relay UL receive beam may also be applied to the time slot and symbol notified in the time domain resource field of the PUSCH scheduling DCI.

[0157] 6) CG (Configured grant) setting or activation may also be used. The notified relay UL receive beam ID and the corresponding relay UL receive beam may also be applied to the time slot and symbol notified by the CG setting and CG activation DCI based on RRC signaling.

[0158] 7) DCI may also be notified using a unified TCI state. The notified relay UL receive beam ID and the corresponding relay UL receive beam may be applied from the beginning slot or symbol X slots or symbols after the last slot or symbol of the PUCCH carrying the HARQ-ACK corresponding to the DCI.

[0159] The beam of the NCR access link can be notified for one time unit. Regarding the granularity of the time unit, in at least some cases (e.g., SSB or CSI-RS forwarding), different NCR beams need to be applied to the symbols in the same time slot. Therefore, beam notification at the symbol level is required.

[0160] On the other hand, the overhead of symbol-level beamforming becomes large. In some cases (such as forwarding of UE data), it is assumed that slot-level beamforming is sufficient.

[0161] Therefore, a combination of slot-level beam notification and symbol-level beam notification can be supported. NCR beams can be notified per slot in a certain slot and per symbol in other slots. The signaling related to this combination is described in detail below.

[0162] In order to support the combination of slot-level NCR access beam notification and symbol-level NCR access beam notification, option 1)-option 2 as shown below may be performed. In addition, the NCR access beam may be a beam applied to the access link, or a DL transmit beam of the NCR-Fwd, or a UL receive beam of the NCR-Fwd, or a beam applied to the return link, or a DL receive beam of the NCR-Fwd, or a UL transmit beam of the NCR-Fwd.

[0163] Option 1) In a certain time unit, regarding the NCR access beam notification, it can be either notification in time slot units or notification in code unit units.

[0164] NCR access beam notification in time slots and NCR access beam notification in symbol units may be notified for non-overlapping time units. For a certain time unit, NCR 30 may not assume receiving both NCR access beam notification in time slots and NCR access beam notification in symbol units.

[0165] Fig.10 1 is a diagram for explaining example (1) of beam notification in an embodiment of the present invention. Fig.10 As shown, the NCR access beam notification in time slot units and the NCR access beam notification in codeword units can be notified in the same time unit or they may not overlap in the time domain.

[0166] In addition, the time slot in which a specific NCR access beam index is notified can be assumed to be notified in units of codewords, and in the time slot in which the specific NCR access beam index is not notified or in the time slot other than the time slot in which the specific NCR access beam index is notified, the notification in units of codewords may not be assumed.

[0167] In addition, it is assumed that the notification in the symbol unit is performed in the time slot where the specific information is not notified, and it is not assumed that the notification in the symbol unit is performed in the time slot where the specific information is not notified.

[0168] Option 1-1) NCR access beam notification in time slot units and NCR access beam notification in symbol units can be notified through separate signaling. Beam notification based on the signaling can be performed through the above-mentioned action A) and action B).

[0169] Fig.112 is a diagram for explaining example (2) of beam notification in an embodiment of the present invention. Fig.11 As shown, beam notification in time slot units may be performed through one signaling, and beam notification in code element units may be performed through other signaling.

[0170] Option 1-2) The NCR access beam notification in time slot units and the NCR access beam notification in codeword units can be notified through one signaling.

[0171] Fig.12 3 is a diagram for explaining example (3) of beam notification in an embodiment of the present invention. Fig.12 As shown, a time domain sequence including beam notification in time slot units and beam notification in codeword units can be notified through one signaling.

[0172] The beam notification based on the signaling can be performed through the above-mentioned action A) and action B), and the following method 1) to method 4) can also be applied.

[0173] Method 1) The NCR can be notified of a sequence of access beams. The sequence can be applied to a sequence of time units, and each NCR access beam can be applied to each time unit.

[0174] Method 2) One NCR access beam may be notified. The one NCR access beam may be applied to a sequence of time units.

[0175] Method 3) The periodic pattern may also be notified. The period and offset may also be notified. As the beam applied to each time unit included in the period, the sequence of the NCR access beam may also be notified.

[0176] Method 4) A periodic pattern may also be notified. A period and an offset may also be notified. An NCR access beam may also be notified as a beam applied to each time unit included in the period.

[0177] In the above beam notification method, the sequence of time units may include time units of different granularities. The granularity of each time unit may be notified, and each time unit may also be a time slot or a code element.

[0178] For example, when the sequence of time units is notified as a continuous time interval, the NCR access beam notification can be performed in units of time slots or in units of codewords for each time slot of the time interval. In the case of time slots, one beam can be notified for the time slot. In the case of codewords, one beam can be notified for each codeword in the time slot. In addition, in the absence of notification related to granularity, as a default action, the NCR access beam notification in units of time slots can also be envisioned. In addition, in the absence of notification related to granularity, as a default action, the NCR access beam notification in units of codewords can also be envisioned.

[0179] For example, when a sequence of time units is notified as a sequence of indexes of time units, the index of each time unit included in the sequence may be a time slot index, may be a codeword index, may be a time slot index and a codeword index in the time slot, may be a codeword position in the time slot, or may be a bitmap representing the codeword position within the time slot.

[0180] The time unit may be a time slot, a symbol, a time slot group, a symbol group, or a subframe. A time slot or a symbol may also be replaced by a time unit of other granularity. A time slot may be replaced by a time slot group, a subframe, or a symbol group. A symbol may be replaced by a time slot group or a symbol group.

[0181] Option 2) In a certain time unit, the NCR access beam notification can be notified in time slots or in symbols. In this time unit, the NCR 30 can be notified of both the beam notification in time slots and the beam notification in symbols.

[0182] Fig.13 4 is a diagram for explaining example (4) of beam notification in an embodiment of the present invention. Fig.13 As shown, NCR30 can cover the beam notification in time slots with the beam notification in code unit for some code elements in a time slot. In the case where the beam notification in code unit is notified for some code elements in a time slot, the beam notification in time slots can be applied to the code elements in the time slot for which the beam notification in code unit is not notified.

[0183] The time unit may be a time slot, a symbol, a time slot group, a symbol group, or a subframe. A time slot or a symbol may also be replaced by a time unit of other granularity. A time slot may be replaced by a time slot group, a subframe, or a symbol group. A symbol may be replaced by a time slot group or a symbol group.

[0184] Here, in the case of supporting multiple signalings for NCR access beam notification, it is necessary to determine the action of the NCR 30 notified of the multiple signalings for a certain time unit.

[0185] When NCR30 receives multiple signalings notifying different beams for the same time unit, option 1) or option 2 as shown below can be performed. In addition, the multiple signalings can be different types of signalings. In addition, the multiple signalings can be the same type of signalings received at different times. For example, the multiple signalings can be multiple DCI formats X received at different times or different monitoring opportunities.

[0186] Option 1) NCR 30 may not assume receiving multiple signalings notifying different beams for the same time unit. In the case of receiving multiple signalings notifying NCR access beams for the same time unit, NCR 30 may assume that multiple signalings notify the same NCR access beam.

[0187] For example, the NCR may be notified of the access beam through signaling Y only for the time unit in which the NCR is not notified of the access beam through signaling X. In the time unit in which the NCR is notified of the access beam through signaling X, the NCR 30 may not assume signaling Y.

[0188] For example, the NCR access beam may be notified by signaling Y only for the time unit in which the specific NCR access beam is notified by signaling X. In the time unit in which the specific NCR access beam is not notified by signaling X, the NCR 30 may not assume signaling Y.

[0189] For example, only for a time unit that is specifically notified, the NCR 30 may receive both signaling X and signaling Y. In a time unit that is not specifically notified, the NCR 30 may assume that either signaling X or signaling Y is received.

[0190] Option 2) NCR 30 may apply the beam notification included in one of the signalings in the time unit based on the following predetermined rule 1) or rule 2).

[0191] Rule 1) The signaling to be applied can be determined based on the time when the signaling is received. NCR30 can apply the beam notification included in the latest signaling in the time domain. The latest signaling in the time domain can be the start time of the signaling or the end time of the signaling.

[0192] Rule 2) The signaling to be applied can be determined based on the signaling type.

[0193] For example, when receiving dynamic signaling and semi-static signaling, NCR30 may apply the beam notification contained in the dynamic signaling, or may apply the beam notification contained in the semi-static signaling. For example, DCI may take precedence over MAC-CE or RRC signaling. For example, MAC-CE may take precedence over RRC signaling. On the other hand, RRC signaling may take precedence over MAC-CE and DCI.

[0194] When receiving signaling X and signaling Y, NCR 30 may apply the beam notification included in signaling X. Here, signaling X and signaling Y are two types of signaling.

[0195] Option 1) or option 2) above may also apply different options to each signaling.

[0196] The time unit may be a time slot, a symbol, a time slot group, a symbol group, or a subframe. The beam notification based on the above signaling may also be performed through the above action A) and action B).

[0197] The above actions can be applied to the notification of the NCR access link DL transmit beam and / or the notification of the NCR access link UL receive beam. The NCR access link beam can be notified as a beam index, as a gNB RS index, as a new RS or a new reference resource index, or using a TCI state index or other terms. The TCI state can be associated with a beam index, with a gNB RS index, with a new RS index, or with a new reference resource index.

[0198] It is also possible to define the capabilities of the NCR shown below.

[0199] ·Whether NCR30 supports the access link beam control of NCR-Fwd.

[0200] In addition, the embodiments of the present invention may also be applied only to the case where the NCR 30 supports the corresponding capabilities and / or the corresponding high-layer signaling is provided.

[0201] In addition, as described above, it is possible to notify ON-OFF of the NCR 30. In addition, the description of ON-OFF may also mean ON (open) or OFF (close).

[0202] The ON-OFF notification of the NCR 30 can also be performed as shown in the following 1)-9). The actions shown in the following 1)-9) are referred to as "Action C".

[0203] 1) A list of time units can also be notified. A list of ON-OFF notifications can also be notified. Each ON-OFF notification can also be notified in each time unit.

[0204] 2) A list of time units may also be notified. An ON-OFF notification may also be notified. The ON-OFF notification may be applied to a list of time units.

[0205] 3) The gNB may also notify the periodic pattern of ON-OFF. The period and offset may also be notified. A list of ON-OFF notifications may also be notified. The ON-OFF notification may also be notified for each time unit within the period.

[0206] 4) The gNB may also notify the periodic pattern of ON-OFF. The period and offset may also be notified. A list of ON-OFF notifications may also be notified. The ON-OFF notification may also be applied to the time unit within the period.

[0207] 5) The same signaling as the HSNA slot setting in the gNB-DU cell resource setting for IAB (Integrated Access and Backhaul) can also be used. HSNA indicates the notification of H (Hard) / S (Soft) / NA (Not Available) for IAB.

[0208] 6) DCI format 2_5 can also be used.

[0209] 7) DCI (DCI formats 1_X, 0_X) for scheduling PDSCH / PUSCH can also be used.

[0210] 8) You can also use SPS / CG settings / enablement.

[0211] 9) When an ON-OFF notification is received, the notified ON or OFF may be applied from the slot / symbol X slots / symbols after the last slot / symbol (or the first slot / symbol) of the notification. Alternatively, the notified ON or OFF may also be applied from the slot / symbol X slots / symbols after the last slot / symbol (or the first slot / symbol) of the HARQ-ACK feedback corresponding to the notification. In addition, the slot / symbol may refer to a slot and / or a symbol. In addition, the notified ON or OFF may be applied to a set or predefined time interval, or may be applied until a new notification is received.

[0212] The time unit of a cell-specific or semi-static signal or channel may also be considered to be notified of ON. For example, the signal or channel may be SSB, SIB1 (PDCCH of CSS type 0 set by pdcchConfigSIB1), periodic CSI-RS, PRACH, or SR.

[0213] Here, a combination of slot-level ON-OFF notification and symbol-level ON-OFF notification may also be supported. It is also possible to notify ON-OFF per slot in a certain slot and notify ON-OFF per symbol in other slots. The signaling related to this combination is described in detail below.

[0214] In order to support a combination of slot-level ON-OFF notification and symbol-level ON-OFF notification, option 1)-option 2) shown below may also be performed.

[0215] Option 1) In a certain time unit, ON-OFF notification may be notified in time slot units or in codeword units.

[0216] ON-OFF notification in slot units and ON-OFF notification in symbol units may be notified for non-overlapping time units. NCR 30 may not assume that both ON-OFF notification in slot units and ON-OFF notification in symbol units are received for a certain time unit.

[0217] Fig.14 1 is a diagram for explaining an example (1) of ON-OFF notification in an embodiment of the present invention. Fig.14 As shown, the ON-OFF notification in time slot units and the ON-OFF notification in codeword units can be notified in the same time unit, or they can not overlap in the time domain.

[0218] In addition, the time slot notified of ON may be notified in units of codewords, and in the time slot not notified of ON, it is not necessary to notify in units of codewords. In addition, the time slot notified of OFF may be notified in units of codewords, and in the time slot not notified of OFF, it is not necessary to notify in units of codewords.

[0219] In addition, it is assumed that the notification in the symbol unit is performed in the time slot where the specific information is not notified, and it is not assumed that the notification in the symbol unit is performed in the time slot where the specific information is not notified.

[0220] Option 1-1) ON-OFF notification in time slot units and ON-OFF notification in symbol units can be notified by separate signaling. The ON-OFF notification based on the signaling can also be performed by the above-mentioned action C).

[0221] Fig.15 2 is a diagram for explaining example (2) of ON-OFF notification in an embodiment of the present invention. Fig.15 As shown, ON-OFF notification in time slot units may be performed through one signaling, and ON-OFF notification in code element units may be performed through other signaling.

[0222] Option 1-2) ON-OFF notification in time slot units and ON-OFF notification in codeword units can be notified through one signaling.

[0223] Fig.161 is a diagram for explaining example (3) of ON-OFF notification in an embodiment of the present invention. Fig.16 As shown, a sequence of the time domain including ON-OFF notification in time slot units and ON-OFF notification in codeword units can be notified by one signaling.

[0224] The beam notification based on the signaling can be performed through the above-mentioned action C), or the following methods 1) to 4) can be applied.

[0225] Method 1) can notify the ON-OFF sequence. This sequence can be applied to the sequence of time units, and each ON-OFF can be applied to each time unit.

[0226] Method 2) can also notify an ON-OFF. This ON-OFF can also be applied to a sequence of time units.

[0227] Method 3) A periodic pattern may also be notified. A period and an offset may also be notified. As ON-OFF applied to each time unit included in the period, a sequence of ON-OFF may also be notified.

[0228] Method 4) A periodic pattern may also be notified. A period and an offset may also be notified. As an ON-OFF applied to each time unit included in the period, an ON-OFF may also be notified.

[0229] In the above-mentioned ON-OFF notification method, the time unit sequence may include time units of different granularities. The granularity of each time unit may be notified, and each time unit may also be a time slot or a code element.

[0230] For example, when notified as a time interval continuous in sequence of time units, the ON-OFF notification may be performed in either a time slot unit or a codeword unit for each time slot of the time interval. In the case of time slot units, one ON-OFF may be notified to the time slot. In the case of codeword units, one ON-OFF may be notified to each codeword in the time slot. In addition, in the absence of notification related to granularity, as a default action, ON-OFF notification in time slot units may also be envisioned. In addition, in the absence of notification related to granularity, as a default action, ON-OFF notification in codeword units may also be envisioned.

[0231] For example, when a sequence of time units is notified as a sequence of indexes of time units, the index of each time unit included in the sequence may be a time slot index, may be a codeword index, may be a time slot index and a codeword index in the time slot, may be a codeword position in the time slot, or may be a bitmap representing the codeword position within the time slot.

[0232] The time unit may be a time slot, a symbol, a time slot group, a symbol group, or a subframe. A time slot or a symbol may also be replaced by a time unit of other granularity. A time slot may be replaced by a time slot group, a subframe, or a symbol group. A symbol may be replaced by a time slot group or a symbol group.

[0233] Option 2) In a certain time unit, ON-OFF notification can be notified in time slot units or in code units. In this time unit, both ON-OFF notification in time slot units and ON-OFF notification in code units can be notified to NCR 30.

[0234] Fig.17 4 is a diagram for explaining example (4) of ON-OFF notification in an embodiment of the present invention. Fig.17 As shown, NCR30 can cover the ON-OFF notification in time slots with the ON-OFF notification in code units for some code elements in a time slot. In the case where the ON-OFF notification in code units is notified for some code elements in a time slot, the ON-OFF notification in code units can be applied to the code elements in the time slot that are not notified of the ON-OFF notification in code units.

[0235] The time unit may be a time slot, a symbol, a time slot group, a symbol group, or a subframe. A time slot or a symbol may also be replaced by a time unit of other granularity. A time slot may be replaced by a time slot group, a subframe, or a symbol group. A symbol may be replaced by a time slot group or a symbol group.

[0236] Here, in the case of supporting multiple signaling for ON-OFF notification, it is necessary to determine the action of the NCR 30 notified of the multiple signaling for a certain time unit.

[0237] When NCR30 receives multiple signalings notifying different ON-OFFs for the same time unit, option 1) or option 2 as shown below can be performed. In addition, the multiple signalings can be different types of signalings. In addition, the multiple signalings can be the same type of signalings received at different times. For example, the multiple signalings can be multiple DCI formats X received at different times or different monitoring opportunities.

[0238] Option 1) NCR 30 may not assume that multiple signalings notifying different ON-OFFs are received for the same time unit. When multiple signalings notifying ON-OFFs for the same time unit are received, NCR 30 may assume that the multiple signalings notify the same ON-OFF.

[0239] For example, ON-OFF may be notified by signaling Y only for the time unit in which ON-OFF is notified by signaling X. In the time unit in which ON-OFF is notified by signaling X, NCR 30 may not assume signaling Y.

[0240] For example, ON-OFF may be notified by signaling Y only for the time unit in which ON is notified by signaling X. In the time unit in which ON is notified by signaling X, NCR 30 may not assume signaling Y.

[0241] For example, ON-OFF may be notified by signaling Y only for the time unit in which OFF is notified by signaling X. In the time unit in which ON is not notified by signaling X, NCR 30 may not assume signaling Y.

[0242] For example, only for a time unit that is specifically notified, the NCR 30 may receive both signaling X and signaling Y. In a time unit that is not specifically notified, the NCR 30 may assume that either signaling X or signaling Y is received.

[0243] Option 2) The NCR 30 may apply the ON-OFF notification included in one of the signalings in the time unit based on the following predetermined rule 1) or rule 2).

[0244] Rule 1) can determine the signaling to be applied based on the time when the signaling is received. NCR30 can also apply the ON-OFF notification contained in the latest signaling in the time domain. The latest signaling in the time domain can be the start time of the signaling or the end time of the signaling.

[0245] Rule 2) The signaling to be applied can be determined based on the signaling type.

[0246] For example, when receiving dynamic signaling and semi-static signaling, NCR30 may apply the beam notification contained in the dynamic signaling, or may apply the beam notification contained in the semi-static signaling. For example, DCI may take precedence over MAC-CE or RRC signaling. For example, MAC-CE may take precedence over RRC signaling. On the other hand, RRC signaling may take precedence over MAC-CE and DCI.

[0247] When receiving the signaling X and the signaling Y, the NCR 30 may apply the ON-OFF notification included in the signaling X. Here, the signaling X and the signaling Y are two types of signaling.

[0248] Rule 3) The signaling to be applied can be determined based on whether ON or OFF is notified. In the case where ON is notified for a certain time unit by signaling, and OFF is notified for the time unit by other signaling, NCR30 can also apply ON. In other words, ON can cover OFF, but OFF cannot cover ON. In the case where ON is notified for a certain time unit by signaling, and OFF is notified for the time unit by other signaling, NCR30 can also apply OFF. In other words, OFF can cover ON, but ON cannot cover OFF.

[0249] Option 1) or option 2) above may also apply different options to each signaling.

[0250] The time unit may be a time slot, a symbol, a time slot group, a symbol group, or a subframe. The ON-OFF notification based on the above signaling may also be performed through the above action C).

[0251] It is also possible to define the capabilities of the NCR shown below.

[0252] Does NCR30 support ON-OFF control of NCR-Fwd?

[0253] In addition, the embodiments of the present invention may also be applied only to the case where the NCR 30 supports the corresponding capabilities and / or the corresponding high-layer signaling is provided.

[0254] Through the above embodiments, the network control repeater can determine the object of the signaling in the time domain for controlling the wireless signal relayed in the access link or the backhaul link of the NCR-Fwd.

[0255] That is, the wireless relay device controlled by the network can control the relay of wireless signals in the time domain.

[0256] (Hardware Structure)

[0257] The block diagram used in the description of the above embodiment ( Figure 2 , Figure 3 as well as Figure 4 ) shows the functional unit module. These functional blocks (structural parts) are implemented by any combination of at least one of hardware and software. In addition, there is no special 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.

[0258] 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.

[0259] For example, the base station 10 , the terminal 20 , the wireless relay device 30 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.18 1 is a diagram showing an example of a hardware configuration of a base station 10, a terminal 20, and a wireless relay device 30 according to an embodiment of the present disclosure. The base station 10, the terminal 20, and the wireless relay device 30 may be configured as a computer device that physically includes a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, and a bus 1007.

[0260] In the following description, the word "device" may be replaced by "circuit", "device", "unit", etc. The hardware structure of the base station 10, terminal 20 and wireless relay device 30 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.

[0261] The functions of the base station 10, the terminal 20 and the wireless relay device 30 are 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.

[0262] 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.

[0263] 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 2 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, Figure 3 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.

[0264] 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.

[0265] 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.

[0266] 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.

[0267] 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).

[0268] 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.

[0269] In addition, the base station 10, the terminal 20, and the wireless relay device 30 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), and 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.

[0270] Furthermore, the wireless relay device 30 may include a variable phase machine, a phase shifter, an amplifier, an antenna, an array antenna, etc. as hardware constituting the variable unit 340 and the antenna unit 350 as necessary.

[0271] Fig.19 FIG. 2 shows a structural example of a vehicle 2001. Fig.19 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 mode / 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.

[0272] 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.

[0273] 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).

[0274] 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.

[0275] The information service unit 2012 is composed of various devices such as a car navigation system, an audio system, a speaker, a television, a radio, etc., 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 an external device via the communication module 2013, etc. to provide various multimedia information and multimedia services to passengers of the vehicle 2001. The information service unit 2012 may include an input device (such as a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) for receiving input from the outside, and may also include an output device (such as a display, a speaker, an LED light, a touch panel, etc.) for implementing output to the outside.

[0276] 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.

[0277] 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.

[0278] 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.

[0279] The communication module 2013 may also transmit at least one of the signals from the various sensors 2021-2028 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 2021-2028, 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.

[0280] 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)). 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 may also control the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the gear 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.

[0281] (Summary of Implementation Methods)

[0282] As described above, according to an embodiment of the present invention, a wireless relay device is provided, wherein the wireless relay device comprises: a communication unit, which receives signaling containing control information related to a relay function from a base station; a control unit, which controls the relay function according to the control information; and a relay unit, which performs a relay function of receiving a first signal from the base station, sending the first signal to a terminal, receiving a second signal from the terminal and sending the second signal to the base station, and the control unit applies a plurality of controls with different time units as objects notified by the control information to the relay function.

[0283] According to the above configuration, the network controlled relay can determine the signaling target in the time domain for controlling the wireless signal relayed in the access link or backhaul link of NCR-Fwd. That is, the wireless relay device controlled by the network can control the relay of the wireless signal in the time domain.

[0284] The multiple controls may include a first control and a second control, wherein the second control takes as an object a time unit shorter than a time unit taken as an object by the first control. According to this structure, the network control repeater can determine the object in the time domain of the signaling for controlling the wireless signal relayed in the access link or the return link of the NCR-Fwd.

[0285] The control unit may cover the first control with the second control when the first control and the second control are for the same time domain. According to this structure, the network control repeater can determine the object in the time domain of the signaling for controlling the wireless signal relayed in the access link or the return link of the NCR-Fwd.

[0286] The control unit can determine the beam for sending the first signal to the terminal or the beam for receiving the second signal from the terminal through the multiple controls. According to this structure, the network control repeater can determine the object in the time domain of the signaling for controlling the wireless signal relayed in the access link or return link of the NCR-Fwd.

[0287] The control unit can enable or disable the relay function through the plurality of controls. According to this configuration, the network control repeater can determine the target of the signaling in the time domain for controlling the wireless signal relayed in the access link or the backhaul link of the NCR-Fwd.

[0288] In addition, according to an embodiment of the present invention, a wireless relay method is provided, wherein the wireless relay device performs the following steps: receiving signaling containing control information related to a relay function from a base station; controlling the relay function according to the control information; performing a relay function of receiving a first signal from the base station, sending the first signal to a terminal, receiving a second signal from the terminal and sending the second signal to the base station; and applying a plurality of controls with different time units as objects notified by the control information to the relay function.

[0289] According to the above configuration, the network controlled relay can determine the signaling target in the time domain for controlling the wireless signal relayed in the access link or backhaul link of NCR-Fwd. That is, the wireless relay device controlled by the network can control the relay of the wireless signal in the time domain.

[0290] (Supplementary Implementation Methods)

[0291] 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.

[0292] 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.

[0293] The various modes and embodiments described in the present disclosure may also be applied to mobile communications systems utilizing 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.

[0294] 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.

[0295] 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).

[0296] 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.

[0297] 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.

[0298] 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).

[0299] 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.

[0300] 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.

[0301] 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.

[0302] 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.

[0303] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0304] 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.

[0305] 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.

[0306] In the present invention, 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 can be used interchangeably. Sometimes, the base station is also referred to as macro cell, small cell, micro-micro cell, micro-micro cell and the like.

[0307] 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.

[0308] 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.

[0309] In the present disclosure, terms such as “mobile station (MS)”, “user terminal (user terminal)”, “user equipment (UE)”, and “terminal” can be used interchangeably.

[0310] 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.

[0311] 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 can be an IoT (Internet of Things) device such as a sensor.

[0312] 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.

[0313] 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.

[0314] 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.

[0315] 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.

[0316] 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.

[0317] 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".

[0318] 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.

[0319] The “unit” in the configuration of each of the above-mentioned devices may be replaced with a “section”, “circuit”, “device” or the like.

[0320] 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.

[0321] 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.

[0322] 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.

[0323] 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.

[0324] 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.

[0325] 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.

[0326] 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.

[0327] 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.

[0328] 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.

[0329] 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.

[0330] 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.

[0331] 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.

[0332] 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.

[0333] 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.

[0334] 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.

[0335] 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.

[0336] 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.

[0337] 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.

[0338] 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".

[0339] 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.

[0340] 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.

[0341] 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".

[0342] 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).

[0343] In the present disclosure, the variable section 340 and the antenna section 350 are one example of a relay section.

[0344] 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.

[0345] Description of symbols

[0346] 10 Base Station

[0347] 110 Sending Department

[0348] 120 Receiving Department

[0349] 130 Setting Department

[0350] 140 Control Department

[0351] 20 Terminal

[0352] 210 Sending Department

[0353] 220 Receiving Department

[0354] 230 Setting Department

[0355] 240 Control Department

[0356] 30 Wireless relay device

[0357] 310 Sending Department

[0358] 320 Receiving Department

[0359] 330 Control Department

[0360] 340 variable part

[0361] 350 Antenna Department

[0362] 1001 Processor

[0363] 1002 Storage Device

[0364] 1003 Auxiliary storage device

[0365] 1004 Communication devices

[0366] 1005 Input Device

[0367] 1006 Output Device

[0368] 2001 Vehicles

[0369] 2002 Drive Department

[0370] 2003 Steering

[0371] 2004 Accelerator pedal

[0372] 2005 Brake Pedal

[0373] 2006 Gear Lever

[0374] 2007 Front wheel

[0375] 2008 Rear wheel

[0376] 2009 Axle

[0377] 2010 Electronic Control Department

[0378] 2012 Information Services Department

[0379] 2013 Communication Module

[0380] 2021 Current Sensor

[0381] 2022 Speed ​​Sensor

[0382] 2023 Air Pressure Sensor

[0383] 2024 Vehicle speed sensor

[0384] 2025 Accelerometer

[0385] 2026 Brake pedal sensor

[0386] 2027 Gear lever sensor

[0387] 2028 Object Detection Sensor

[0388] 2029 Accelerator pedal sensor

[0389] 2030 Driving Assistance Systems Division

[0390] 2031 Microprocessor

[0391] 2032 memory (ROM, RAM)

[0392] 2033 communication port (IO port)

Claims

1. A wireless relay device, wherein: The wireless relay device comprises: a communication unit that receives signaling including control information related to a relay function from a base station; a control unit configured to control a relay function according to the control information; and a relay unit that performs a relay function of receiving a first signal from the base station, sending the first signal to a terminal, receiving a second signal from the terminal, and sending the second signal to the base station, The control unit applies a plurality of controls having different time units as targets notified by the control information to the relay function.

2. The wireless relay device according to claim 1, wherein: The plurality of controls include a first control and a second control targeting a time unit shorter than a time unit targeted by the first control.

3. The wireless relay device according to claim 2, wherein: The control unit overwrites the first control with the second control when the first control and the second control are for the same time zone.

4. The wireless relay device according to claim 3, wherein: The control unit determines, through the plurality of controls, a beam for transmitting the first signal to the terminal or a beam for receiving the second signal from the terminal.

5. The wireless relay device according to claim 3, wherein: The control unit enables or disables the relay function through the plurality of controls.

6. A wireless relay method, wherein: The wireless relay device performs the following steps: receiving signaling including control information related to a relay function from a base station; controlling a relay function according to the control information; Perform a relay function of receiving a first signal from the base station, sending the first signal to a terminal, receiving a second signal from the terminal, and sending the second signal to the base station; as well as A plurality of controls with different time units as targets notified by the control information are applied to the relay function.

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