Wireless device, base station, and communication method

Abstract

A wireless device is provided with: a control unit that performs, for a plurality of endpoints to which beamforming based on an uplink demodulation reference signal is applied, setting such that at least one window for receiving the demodulation reference signal is applied to each of the endpoints; and a reception unit that receives the demodulation reference signal in the window.

Description

Technical Field

[0001] This invention relates to wireless devices, base stations, and communication methods in wireless communication systems. Background Technology

[0002] In NR (New Radio) (also known as "5G"), which is the successor system to LTE (Long Term Evolution), technologies have been introduced to meet requirements such as high-capacity systems, high-speed data transmission, low latency, simultaneous connection of multiple terminals, low cost, and power saving (e.g., non-patent literature 1).

[0003] Furthermore, in O-RAN standardization, for next-generation radio access networks, research is being conducted on uplink performance improvement (UPLI) in massive MIMO (Multiple Input Multiple Output).

[0004] Existing technical documents

[0005] Non-patent literature

[0006] Non-patent literature 1: 3GPP TS 23.501 V18.1.0 (2023-03) Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] In UPLI, to prevent information loss between the O-RU and O-DU, the O-RU (Open-Radio Unit) performs channel estimation, a function previously performed by the O-DU (Open-Distributed Unit). In the O-RU, when performing channel estimation using the De-Modulation Reference Signal (DMRS), the uplink DMRS receive and / or transmit windows need to be set. From a performance perspective, flexible configuration is desirable, but from an operational perspective, complex configuration is undesirable.

[0009] The present invention was made in view of the above circumstances, and its object is to properly set the receive and / or transmit window of the uplink DMRS in a wireless communication system.

[0010] Methods for solving problems

[0011] According to the disclosed technology, a wireless device is provided, comprising: a control unit that performs the following settings on a plurality of endpoints to which beamforming based on an uplink demodulation reference signal is applied: applying at least one window for receiving the demodulation reference signal to each of the endpoints; and a receiving unit that receives the demodulation reference signal in the window.

[0012] Invention Effects

[0013] According to the disclosed technology, a technique is provided for properly setting the receive and / or transmit window of the uplink DMRS in a wireless communication system. Attached Figure Description

[0014] Figure 1 This is a diagram illustrating a structural example (1) of a wireless communication system according to an embodiment of the present invention.

[0015] Figure 2 This is a diagram illustrating a structural example (2) of a wireless communication system according to an embodiment of the present invention.

[0016] Figure 3 This is a diagram illustrating a structural example of base station 10 in an embodiment of the present invention.

[0017] Figure 4 This is a diagram used to illustrate large-scale MIMO.

[0018] Figure 5 This is a diagram used to illustrate the receiving and / or sending windows in embodiments of the present invention.

[0019] Figure 6 This is a diagram illustrating the first method in an embodiment of the present invention.

[0020] Figure 7 This is a diagram illustrating the second method in an embodiment of the present invention.

[0021] Figure 8 This is a diagram used to illustrate the third method in an embodiment of the present invention.

[0022] Figure 9 This is a diagram used to illustrate the fourth method in an embodiment of the present invention.

[0023] Figure 10 This is the second figure used to illustrate the fourth method in an embodiment of the present invention.

[0024] Figure 11 This is a diagram illustrating a structural example of a dispersion device according to an embodiment of the present invention.

[0025] Figure 12 This is a diagram illustrating a structural example of a wireless device according to an embodiment of the present invention.

[0026] Figure 13 This is a diagram illustrating an example of the hardware structure of a wireless device or distributed device according to an embodiment of the present invention.

[0027] Figure 14 This is a diagram illustrating a structural example of a vehicle according to an embodiment of the present invention. Detailed Implementation

[0028] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, the embodiments described below are merely examples, and the application of the present invention is not limited to the embodiments described below.

[0029] In the operation of the wireless communication system according to embodiments of the present invention, existing technologies are appropriately used. However, existing technologies include, for example, existing LTE or existing NR, but are not limited to existing LTE and NR.

[0030] Furthermore, in the embodiments of the present invention described below, terms used in existing NRs, etc., are used, but this is for ease of description, and signals, functions, etc. that are the same as them may also be referred to by other names.

[0031] Furthermore, in embodiments of the present invention, the duplex mode can be TDD (Time Division Duplex), FDD (Frequency Division Duplex), or other modes (e.g., Flexible Duplex).

[0032] Furthermore, in embodiments of the present invention, the "configure" wireless parameters can be pre-configured predetermined values, or wireless parameters notified from the base station 10 or the terminal 20.

[0033] (System architecture example)

[0034] Figure 1 This is a diagram illustrating a structural example (1) of a wireless communication system according to an embodiment of the present invention. Figure 1 As shown, the wireless communication system in this embodiment of the invention includes a base station 10 and a terminal 20. Figure 1 The diagram shows one base station 10 and one terminal 20, but this is only an example and there can be multiple base stations. In addition, the base station 10 in this embodiment specifically includes an O-RU (O-RAN Radio Unit) and an O-DU (O-RAN Distributed Unit), which will be described in detail later.

[0035] Base station 10 is a communication device that provides one or more cells and communicates wirelessly with terminal 20. The physical resources of the wireless signal are defined in the time and frequency domains. 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. Base station 10 sends synchronization signals and system information to terminal 20. Synchronization signals are, for example, NR-PSS and NR-SSS. System information is transmitted, for example, via NR-PBCH, also known as broadcast information. Synchronization signals and system information can also be referred to as SSB (SS / PBCH block). SSB can be called a synchronization signal or a synchronization signal block. Figure 1 As shown, base station 10 sends control signals or data to terminal 20 via DL (Downlink) and receives control signals or data from terminal 20 via UL (Uplink). Both base station 10 and terminal 20 are capable of beamforming for signal transmission and reception. Furthermore, both base station 10 and terminal 20 can apply MIMO (Multiple Input Multiple Output) based communication to DL or UL. Additionally, base station 10 and terminal 20 can also communicate via CA (Carrier Aggregation) based secondary cells (SCell) and primary cells (PCell). Moreover, terminal 20 can also communicate via DC (Dual Connectivity) based primary cells of base station 10 and primary SCG cells of other base stations 10.

[0036] Terminal 20 refers to communication devices with wireless communication capabilities, such as smartphones, mobile phones, tablets, wearable terminals, IoT terminals, and M2M (Machine-to-Machine) communication modules. Figure 1 As shown, terminal 20 receives control signals or data from base station 10 via DL and transmits control signals or data to base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system. Furthermore, terminal 20 receives various reference signals transmitted from base station 10 and performs propagation path quality measurements based on the reception results of these reference signals.

[0037] Terminal 20 is capable of carrier aggregation, which bundles multiple cells (multiple CCs (Component Carriers)) to communicate with base station 10. In carrier aggregation, one PCell (Primary cell) and one or more SCells (Secondary cells) are used. Alternatively, a PUCCH-SCell with a PUCCH can also be used.

[0038] Figure 2 This is a diagram illustrating a structural example (2) of a wireless communication system according to an embodiment of the present invention. Figure 2 This illustrates an example of the structure of a wireless communication system implementing dual connectivity (DC). Figure 2 As shown, the system includes a base station 10A, which acts as the Master Node (MN), and a base station 10B, which acts as the Secondary Node (SN). Base stations 10A and 10B are connected to the core network. Terminal 20 can communicate with both base stations 10A and 10B.

[0039] The cell group provided by base station 10A, which acts as the MN, is called the MCG (Master Cell Group), and the cell group provided by base station 10B, which acts as the SN, is called the SCG (Secondary Cell Group). Furthermore, in the DC, the MCG consists of one PCell and one or more SCells, and the SCG consists of one PSCell (Primary SCG Cell) and one or more SCells.

[0040] The processing actions in this embodiment can be performed by Figure 1 The system architecture shown can also be executed by... Figure 2 The system architecture shown can be executed by other system architectures as well.

[0041] In O-RAN standardization, for next-generation radio access networks, uplink performance improvement (UPLI) in massive MIMO is being studied. UPLI prevents information loss between O-RU and O-DU by performing channel estimation of the De-Modulation Reference Signal (DMRS) and calculation of BWF (Beam Forming Weight) in the O-RU, which was previously performed in the O-DU.

[0042] In addition, the following two structures were studied in the O-RAN standardization: "DMRS-BF-EQ", which performs DMRS-related processing and uplink equalization in the O-RU; and "DMRS-BF-NEQ", which performs DMRS-related processing in both the O-RU and O-DU, and performs uplink equalization in the O-DU.

[0043] Figure 3 This is a diagram illustrating a structural example of base station 10 in an embodiment of the present invention. Figure 3 The base station 10 shown includes O-DU11, O-RU12A supporting the DMRS-BF-NEQ structure, and O-RU12B supporting the DMRS-BF-EQ structure. O-DU11 is connected to O-RU12A and O-RU12B via a line. This line connection can be point-to-point or via a Layer 2 switch, etc. Hereinafter, O-RU12A and O-RU12B will be referred to as O-RU12 unless there is a need to distinguish between them.

[0044] In this embodiment, O-DU11 can also be referred to as a distributed device, and O-RU12 as a wireless device. O-DU11 is a logical node that includes functions for setting or controlling O-RU12. O-RU12 is a logical node that includes functions for performing RF processing.

[0045] As the protocol stack for communication between O-DU11 and O-RU12, C-Plane is used to transmit control signals, and U-Plane is used to transmit user data. Additionally, S-Plane is the protocol for achieving synchronization between devices. M-Plane is the management plane for processing maintenance and monitoring signals. Information can be sent from O-DU11 to O-RU12 using M-Plane.

[0046] Alternatively, O-DU11 can be replaced with DU, and O-RU12 can be replaced with RU.

[0047] (Massively MIMO method)

[0048] Figure 4 This is a diagram used to illustrate large-scale MIMO. Figure 4This document outlines the processing procedures in the first (Cat.B Weight-based) and second (Cat.B CH-info-based) methods already defined in the O-RAN standardization, as well as the third (ULPI DMRS-BF-NEQ) and fourth (DMRS-BF-EQ) methods currently under investigation in the O-RAN standardization. The uplink signal (UL signal) received at base station 10 is first input to the O-RU for processing, and then the output is input to the O-DU for further processing. The processes performed include Beam Forming (BF), BF weight calculation, SRS (Sounding Reference Signal) channel estimation, DMRS channel estimation, combining, and equalization. In the first method, BF is performed in the O-RU, while all other processing is performed in the O-DU. In the second approach, BF and BF weight calculations are performed in the O-RU, while other processing besides BF and BF weight calculations is performed in the O-DU. In the third approach, DMRS channel estimation and combining are performed in the O-RU, while combining / equalizing DMRS channel estimation is performed in the O-DU. In the fourth approach, DMRS channel estimation and combining / equalizing are performed in the O-RU. However, the third and fourth approaches are still under development in the O-RAN standardization process. Regarding SRS channel estimation, it has not yet been decided whether it will be performed by the O-RU or the O-DU, and it is also possible that the processing shown by the dashed line will not be performed. Based on this structure, regarding the processing load in the O-RU, the first approach has the lowest load, and the fourth approach has the highest load. Conversely, regarding the processing load in the O-DU, the first approach has the highest load, and the fourth approach has the lowest load.

[0049] (Uplink signal demodulation action)

[0050] When beamforming and equalization are performed using the uplink shared channel decoding reference signal (PUSCH DMRS) in ULPI, the delay increases the amount of delay in receiving timing and transmission timing to O-DU. Therefore, it is necessary to consider the delay and perform the reception of DMRS symbols and transmission to O-DU in advance in O-RU.

[0051] The waiting window (receive and / or transmit window) used to process uplink signals (UL signals) transmitted from the antenna to the O-RU was previously defined by the difference between the maximum and minimum values ​​of two propagation allowances called Ta3_max and Ta3_min (window = Ta3_max - Ta3_min). In ULPI, the position of this window needs to be shifted appropriately. Figure 5 This is a diagram used to illustrate the receiving and / or sending windows in embodiments of the present invention. For example... Figure 5 As shown, the uplink DMRS receives data within the window between Ta3_min and Ta3_max. Figure 5 In the example, DMRS is configured for one symbol within a time slot, but depending on the DMRS-related settings (DMRS config), a maximum of four symbols can be configured. Additionally, it is sometimes configured for two consecutive symbols.

[0052] In the O-RAN standardization, it is agreed that settings should be performed on a per-endpoint (EP) basis in beamforming processing using DMRS (BMRS-BF). That is, sometimes BF methods other than DMRS-BF (Weight-based, Channel-info, etc.) are also applied to each EP.

[0053] (Example)

[0054] An example is described. In the example, a method for shifting the receive and / or transmit window positions in uplink demodulation reference signal-based beamforming (DMRS-BF) on symbols applying ULPI in the O-RU12 is described.

[0055] (First Method)

[0056] In the first method, a common window is set for the endpoints that apply DMRS-BF. Figure 6 This is a diagram illustrating the first method in an embodiment of the present invention. For example... Figure 6 As shown, a first window (window #1) is set for the first EP (EP#1), and window #1 is applied to all DMRS received in EP#1. Furthermore, in Figure 6 In the example, window #1 is applied to the configuration information of the three DMRS (DMRSconfig#1~#3).

[0057] The first method is simple to set up, thus reducing the costs associated with setup and operation. On the other hand, it requires the use of a fixed window regardless of the location of the DMRS within the time slot, thus lacking setup flexibility and posing a problem in optimizing ULPI performance.

[0058] (Second method)

[0059] In the second method, a window is set for each endpoint where DMRS-BF is applied. Figure 7 This is a diagram illustrating the second method in an embodiment of the present invention. For example... Figure 7 As shown, different windows (windows #1-3) are set for the three endpoints (EP#1~#3). Furthermore, in Figure 7 In the example, one window (windows #1-3) is applied to each of the three DMRS-related configuration settings (DMRS config #1~#3). Alternatively, multiple windows can be applied to a single DMRS config.

[0060] The second method can set the optimal window based on the location of the DMRS, but it requires increasing the number of endpoints set according to the location of each DMRS.

[0061] (Third method)

[0062] In the third method, multiple windows are set for the endpoints that apply DMRS-BF. Figure 8 This is a diagram used to illustrate the third method in an embodiment of the present invention. For example... Figure 8 As shown, three windows (windows #1-3) are set for a single endpoint (EP#1). Furthermore, in... Figure 8 In the example, one window (windows #1-3) is applied to each of the three DMRS-related configuration settings (DMRS config #1~#3). Alternatively, multiple windows can be applied to a single DMRS config.

[0063] The third method allows setting the optimal window based on the location of the DMRS without adding endpoints. On the other hand, setting up a single endpoint becomes complex.

[0064] (Fourth method)

[0065] In the fourth method, multiple windows can be set for the endpoints of the DMRS-BF application, and multiple endpoints can be set. Figure 9 This is a diagram used to illustrate the fourth method in an embodiment of the present invention. For example... Figure 9 As shown, for example, windows #1 and #2 can be set in EP#1, and windows #3 and #4 can be set in EP#2. Here, the four windows (windows #1-#4) are applied to DMRS config #1-4 respectively. Alternatively, multiple windows can also be applied to a single DMRS-related setting. Figure 10 This is the second figure used to illustrate the fourth method in an embodiment of the present invention. (See figure below.) Figure 10As shown, DMRS based on DMRS config#1 is transmitted using two symbols in EP#1, and this configuration information is applied to window #1. DMRS based on DMRS config#2 is transmitted using one symbol in EP#1 and one symbol in EP#2, with windows #1 and #3 respectively used as windows. DMRS based on DMRS config#3 is transmitted using two symbols in EP#1 and two symbols in EP#2, with windows #2 and #4 respectively used as windows.

[0066] Figure 9 and Figure 10 The settings shown are an example. For instance, different windows can be applied to the symbols of the two DMRS in DMRS config#1, or different windows can be applied to the symbols of the four DMRS in DMRS config#3.

[0067] That is, in the fourth method, the O-RU12 performs a setting for each of the multiple endpoints applying beamforming based on the uplink demodulation reference signal to receive the demodulation reference signal, and receives the demodulation reference signal within the set window. Furthermore, in the fourth method, a single window can be applied to the demodulation reference signal configuration information (DMRS-config) that sets the symbol position of at least one demodulation reference signal. Alternatively, in the fourth method, multiple windows can be applied to the demodulation reference signal configuration information (DMRS-config) that sets the symbol position of at least one demodulation reference signal.

[0068] The fourth method combines the functions of the second and third methods, allowing for more flexible configuration. By considering performance improvements and configuration complexity in UPLI, it enables better configuration.

[0069] (Methods related to the set notifications)

[0070] The endpoint and window-related settings in the first to fourth methods described above can be dynamically notified to the O-RU12 from the O-DU11 via C-Plane signals. Alternatively, they can be fixedly notified to the O-RU12 as initial settings via M-Plane signals from the O-DU11 or NMS (Network Management System). Alternatively, the O-RU12 can implicitly determine the settings based on received DMRS or DMRS-related configuration information (DMRS Config).

[0071] Furthermore, the settings related to endpoints and windows and / or notifications related to the capabilities of O-RU12, as described in the first to fourth methods above, can also be sent from O-RU12 to O-DU11. Additionally, this notification may include information related to the windows used and / or the windows that can be used. Thus, information related to these settings and capabilities can be shared between O-DU11 and O-RU12.

[0072] According to the above embodiments, in a wireless communication system, the receive and / or transmit windows of the uplink DMRS can be appropriately set. For example, in uplink performance improvement (UPLI), multiple receive and / or transmit windows of the uplink DMRS can be set for each endpoint applying DMRS-BF. Furthermore, the O-RU12 can transmit information related to channel estimation calculated based on the received demodulation reference signal to the O-DU11.

[0073] (Device structure)

[0074] Next, we will describe the functional structure of O-DU11 and O-RU12, which perform the above-mentioned processes and actions. O-DU11 can be referred to as a distributed device, and O-RU12 as a wireless device.

[0075] <o-du11>

[0076] Figure 11 This is a diagram illustrating an example of the functional structure of O-DU11. (See diagram below.) Figure 11 As shown, the O-DU11 includes a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. Figure 11 The functional structure shown is only one example. As long as the actions involved in the embodiments of the present invention can be performed, the functional distinctions and names of the functional units can be arbitrary. Alternatively, the transmitting unit 110 and the receiving unit 120 can be collectively referred to as the communication unit.

[0077] The transmitting unit 110 includes the function of generating a signal (information) to be transmitted to the terminal 20 and transmitting the signal to the O-RU 12. The receiving unit 120 receives the signal transmitted from the O-RU 12.

[0078] The setting unit 130 stores setting information in its own storage device and reads it from the storage device as needed, for example, by sending it to the terminal 20 via the sending unit 110. The control unit 140 performs control related to the processing of the O-DU 11. The sending unit 110 may also be referred to as a transmitter, and the receiving unit 120 as a receiver.

[0079] <o-ru12>

[0080] Figure 12 This is a diagram illustrating an example of the functional structure of O-RU12. (See diagram below.) Figure 12 As shown, the O-RU12 includes a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. Figure 12 The functional structure shown is only one example. As long as the actions involved in the embodiments of the present invention can be performed, the functional distinctions and names of the functional units can be arbitrary. The transmitting unit 210 and the receiving unit 220 can also be collectively referred to as the communication unit.

[0081] The transmitting unit 210 transmits signals to the terminal 20 and to the O-DU 11. More specifically, the transmitting unit 210 includes an antenna for transmitting signals to the terminal 20 and a transmitting function (e.g., an interface with an optical fiber) for transmitting signals to the O-DU 11.

[0082] The receiving unit 220 receives signals from the terminal 20 and from the O-DU11. More specifically, the receiving unit 220 includes an antenna for receiving signals from the terminal 20 and a receiving function (e.g., an interface with an optical fiber) for receiving signals from the O-DU11.

[0083] The setting unit 230 saves setting information to its own storage device and reads it from the storage device as needed. In addition, the setting unit 230 also stores preset setting information.

[0084] The control unit 240 controls the O-RU12.

[0085] The following notes are disclosed in at least one of these specifications.

[0086] <Postscript>

[0087] (Note 1)

[0088] A wireless device having: The control unit performs the following settings for multiple endpoints applying beamforming based on an uplink demodulation reference signal: applying at least one window for receiving the demodulation reference signal to each endpoint; and The receiving unit receives the demodulation reference signal in the window.

[0089] (Note 2)

[0090] According to the wireless device described in Appendix 1, the control unit applies a window to the setting information of the demodulation reference signal, wherein the setting information of the demodulation reference signal sets at least one symbol position of the demodulation reference signal.

[0091] (Note 3)

[0092] According to the wireless device described in Appendix 1, the control unit allows the application of multiple windows for the setting information of the demodulation reference signal, and the setting information of the demodulation reference signal sets at least one symbol position of the demodulation reference signal.

[0093] (Note 4)

[0094] According to the wireless device described in Appendix 1, the receiving unit receives a notification related to the setting performed by the control unit during initial setting or dynamically receives a notification related to the setting performed by the control unit.

[0095] (Note 5)

[0096] A base station having a wireless device and a distributed device, wherein, The wireless device has: The control unit performs the following settings for multiple endpoints that apply beamforming based on the uplink demodulation reference signal: applying at least one window for receiving the demodulation reference signal to each of the endpoints; The receiving unit receives the demodulation reference signal in the window. Receive notifications from the distributed device related to the settings executed by the control unit; and The transmitting unit transmits information related to channel estimation, calculated based on the demodulated reference signal received by the receiving unit, to the distributed device. The dispersing device has: The transmitting unit sends a notification related to the settings to the wireless device; and The receiving unit receives information related to the channel estimation from the wireless device.

[0097] (Note 6)

[0098] A communication method performed by a wireless device includes the following steps: For multiple endpoints applying beamforming based on an uplink demodulation reference signal, the following settings are performed: At least one window for receiving the demodulation reference signal is applied to each endpoint; and The demodulation reference signal is received in the window.

[0099] According to any one of notes 1 to 6, the window of the uplink DMRS can be appropriately set in the wireless communication system.

[0100] (Hardware structure)

[0101] The block diagram used in the description of the above embodiments ( Figures 11-12 The diagram illustrates blocks organized by function. These functional blocks (components) are implemented through any combination of at least one of hardware and software. Furthermore, there are no particular limitations on the implementation method of each functional block. That is, each functional block can be implemented using a single device that is physically or logically combined, or by directly or indirectly (e.g., using wired, wireless, etc.) connecting two or more physically or logically separate devices. Functional blocks can also be implemented by combining software within the aforementioned single or multiple devices.

[0102] The functions include judgment, decision, determination, calculation, calculation, processing, derivation, investigation, search, confirmation, receiving, sending, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning, but are not limited to these. For example, the functional block (structural part) that performs the sending function is called the transmitting unit or transmitter. In short, as mentioned above, there are no particular limitations on the implementation method.

[0103] For example, O-DU11, O-RU12, etc. in one embodiment of this disclosure can also function as a computer for processing the wireless communication method of this disclosure. Figure 13 This is a diagram illustrating an example of the hardware structure of O-DU11 and O-RU12 according to one embodiment of the present invention. The O-DU11 and O-RU12 described above can also be configured as a computer device that physically includes a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0104] Furthermore, in the following description, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware structure of O-DU11 and O-RU12 can be configured to include one or more of the devices shown in the figures, or it can be configured to exclude some of the devices.

[0105] The functions in O-DU11 and O-RU12 are implemented by reading predetermined software (programs) into hardware such as processor 1001 and storage device 1002, so that processor 1001 performs calculations and controls the communication of communication device 1004 or controls at least one of reading and writing data in storage device 1002 and auxiliary storage device 1003.

[0106] The processor 1001 controls the computer as a whole by instructing the operating system to operate. The processor 1001 may also be a central processing unit (CPU) that includes interfaces with peripheral devices, control units, arithmetic units, registers, etc. For example, the control unit 140 and control unit 240 described above can also be implemented using the processor 1001.

[0107] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage devices 1003 and communication devices 1004, and performs various processes accordingly. As a program, a program is used that causes the computer to perform at least a portion of the actions described in the above embodiments. For example, Figure 11 The control unit 140 of the O-DU11 shown can also be implemented by a control program stored in the storage device 1002 and operated in the processor 1001. Alternatively, for example, Figure 12 The control unit 240 of the O-RU12 shown can also be implemented by a control program stored in the storage device 1002 and operated in the processor 1001. Although it has been described that the various processes described above are executed by one processor 1001, the various processes described above can also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 can also be implemented by one or more chips. In addition, the program can also be transmitted from a network via a telecommunications line.

[0108] Storage device 1002 is a computer-readable recording medium, and may be composed of at least one of the following: ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory). Storage device 1002 may also be referred to as a register, cache, main memory (main storage device), etc. Storage device 1002 can store programs (program code), software modules, etc., that are executable for implementing the communication method according to one embodiment of this disclosure.

[0109] The auxiliary storage device 1003 is a computer-readable recording medium, such as at least one of the following: CD-ROM (CompactDisc ROM) or other optical discs, hard disks, floppy disks, magneto-optical discs (e.g., compact discs, digital multifunction discs, Blu-ray discs), smart cards, flash memory (e.g., cards, sticks, key drives), floppy disks, magnetic stripes, etc. The aforementioned storage medium may, for example, be a database, server, or other suitable media that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0110] The communication device 1004 is hardware (transceiver) used for communication between computers via at least one of a wired network and a wireless network. It may also be referred to as a network device, network controller, network interface card (NIC), communication module, etc. The communication device 1004 may, for example, be configured to include a high-frequency switch, duplexer, filter, frequency synthesizer, etc., to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, transceiver antennas, amplifiers, transceiver units, transmission path interfaces, etc., can also be implemented using the communication device 1004. The transceiver unit may also be physically or logically separated into a transmitting unit and a receiving unit.

[0111] Input device 1005 is an input device that accepts input from external sources (e.g., keyboard, mouse, microphone, switch, button, sensor, etc.). Output device 1006 is an output device that performs output to external sources (e.g., display, speaker, LED, etc.). Alternatively, input device 1005 and output device 1006 can also be integrated (e.g., a touch panel).

[0112] Furthermore, the processor 1001 and storage device 1002, among other devices, are connected via a bus 1007 for communicating information. The bus 1007 can be configured using a single bus or different buses can be used between each device.

[0113] Furthermore, O-DU11 and O-RU12 can be configured to include hardware such as a microprocessor, digital signal processor (DSP), ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), and FPGA (Field Programmable Gate Array), and can also be used to implement some or all of the functional blocks. For example, processor 1001 can also be implemented using at least one of these hardware components.

[0114] In addition, vehicle 2001 may also be equipped with O-DU11 or O-RU12. Figure 14 An example of the structure of vehicle 2001 is shown. For example... Figure 14 As shown, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a gearshift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013. The O-DU11 or O-RU12 of the various embodiments / implementations described in this disclosure can also be applied to a communication device mounted on the vehicle 2001, for example, it can also be applied to the communication module 2013.

[0115] The drive unit 2002 may be composed, for example, an engine, a motor, or a hybrid power system of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called 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 the user.

[0116] The electronic control unit 2010 consists of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (I / O port) 2033. Signals from various sensors 2021 to 2029 of the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 can also be referred to as an ECU (Electronic Control Unit).

[0117] The signals from various sensors 2021 to 2029 include current signals from current sensor 2021 that monitors the current of the motor, speed signals of the front and rear wheels obtained by speed sensor 2022, air pressure signals of the front and rear wheels obtained by air pressure sensor 2023, vehicle speed signals obtained by vehicle speed sensor 2024, acceleration signals obtained by acceleration sensor 2025, accelerator pedal depress signal obtained by accelerator pedal sensor 2029, brake pedal depress signal obtained by brake pedal sensor 2026, gear lever operation signal obtained by gear lever sensor 2027, and detection signals obtained by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0118] The Information Service Unit 2012 comprises various devices such as a car navigation system, audio system, speakers, television, and radio, used to provide (output) various information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The Information Service Unit 2012 uses information obtained from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001. The Information Service Unit 2012 may include input devices that accept input from external sources (such as keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.), and may also include output devices that perform output to external sources (such as displays, speakers, LED lights, touch panels, etc.).

[0119] The Driver Assistance System 2030 comprises various devices used to prevent accidents or reduce driver workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning devices (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps), gyroscope systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System)), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. Furthermore, the Driver Assistance System 2030 transmits and receives various information via the communication module 2013 to achieve driver assistance or autonomous driving functions.

[0120] 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, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear shift lever 2006, front wheel 2007, rear wheel 2008, axle 2009, microprocessor 2031 in the electronic control unit 2010, memory (ROM, RAM) 2032, and sensors 2021 to 29 in the vehicle 2001 via the communication port 2033.

[0121] The communication module 2013, controlled by the microprocessor 2031 of the electronic control unit 2010, is a communication device capable of communicating with external devices. For example, it can transmit and receive various types of information with external devices via wireless communication. The communication module 2013 can be located inside or outside the electronic control unit 2010. External devices can be, for example, base stations, mobile stations, etc.

[0122] The communication module 2013 can also wirelessly transmit at least one of the signals input to the electronic control unit 2010 from the various sensors 2021-2028 described above, the information obtained based on those signals, and the information obtained via the information service unit 2012 based on input from an external source (user) to an external device. The electronic control unit 2010, the various sensors 2021-2028, and the information service unit 2012 can also be referred to as input units that receive input. For example, the PUSCH transmitted by the communication module 2013 can contain information based on the aforementioned inputs.

[0123] The communication module 2013 receives various information (traffic information, signal information, vehicle-to-vehicle information, etc.) sent from external devices and displays it on the information service unit 2012 of the vehicle 2001. The information service unit 2012 can also be referred to as an output unit for outputting information (for example, outputting information to devices such as displays and speakers based on the PDSCH received by the communication module 2013 (or data / information decoded from the PDSCH). In addition, the communication module 2013 stores the various information received from external devices in a memory 2032 available to the microprocessor 2031. The microprocessor 2031 can also control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc., of the vehicle 2001 based on the information stored in the memory 2032.

[0124] (Supplement to the implementation method)

[0125] The embodiments of the present invention have been described above, but the disclosed invention is not limited to such embodiments. Those skilled in the art should understand various modifications, alterations, substitutions, and replacements. Specific numerical examples have been used to facilitate understanding of the invention, but unless otherwise specified, these values ​​are merely examples, and any appropriate values ​​may be used. The distinctions between items in the above description are not essential to the present invention. Items described in two or more items may be combined as needed, and items described in one item may be applied to items described in another item (as long as there is no contradiction). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical components. Multiple functional units may be operated by a single physical component, or a single functional unit may be operated by multiple physical components. Regarding the processing procedures described in the embodiments, the order of processing may be interchanged unless there is a contradiction. For ease of explanation, functional block diagrams are used to illustrate O-DU11 and O-RU12, but such a device may also be implemented by hardware, software, or a combination thereof. According to embodiments of the present invention, the software operated by the processor of O-DU11 and the software operated by the processor of O-RU12 according to embodiments of the present invention can be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server and any other suitable storage medium.

[0126] Furthermore, the notification of information is not limited to the forms / implementations described in this disclosure, and other methods may also be used. For example, information notification may be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher 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 combinations 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.

[0127] The various forms / implementations described in this disclosure can also be applied to 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 The system may include at least one of 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), other suitable systems, and next-generation systems based on, modified, created, or defined by these systems. Furthermore, multiple systems may be combined (e.g., a combination of at least one of LTE and LTE-A with 5G, etc.).

[0128] The processing procedures, timing, and flow of the various forms / implementations described in this specification may be rearranged in order, provided there is no contradiction. For example, the elements of various steps are indicated using an illustrative order for the methods described in this disclosure, but are not limited to the specific order indicated.

[0129] In this specification, certain actions performed by base station 10 may sometimes also be performed by its upper node, depending on the circumstances. In a network consisting of one or more network nodes having base station 10, it is obvious that various actions performed to communicate with terminal 20 can be performed by at least one of base station 10 and other network nodes besides base station 10 (e.g., considering MME or S-GW, but not limited to these). The above example illustrates the case where there is one other network node besides base station 10, but other network nodes can also be a combination of multiple other network nodes (e.g., MME and S-GW).

[0130] The information or signals described in this disclosure can be output from a higher (or lower) layer to a lower (or higher) layer. They can also be input or output via multiple network nodes.

[0131] Input or output information can be stored in a specific location (e.g., memory) or managed using a management table. Input or output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0132] The determination in this disclosure can be made by a value represented by 1 bit (0 or 1), by a Boolean value (Boolean: true or false), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value).

[0133] Software, whether called software, firmware, middleware, microcode, hardware description language, or by other names, should be broadly interpreted as referring to commands, command sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0134] In addition, software, commands, information, etc., can be sent and received via a transmission medium. For example, when software is sent from a webpage, server, or other remote source using at least one of wired technologies (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) etc.) and wireless technologies (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0135] The information, signals, etc., described in this disclosure can also be represented using 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 can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination of these.

[0136] Furthermore, the terms used in this disclosure and those necessary for understanding this disclosure may be replaced with terms that have the same or similar meanings. For example, at least one of the channel and symbol may also be a signal (signaling). Additionally, a signal may also be a message. Furthermore, a component carrier (CC) may also be referred to as carrier frequency, cell, frequency carrier, etc.

[0137] The terms "system" and "network" as used in this disclosure are used interchangeably.

[0138] Furthermore, the information, parameters, etc., described in this disclosure can be represented using absolute values, relative values ​​to predetermined values, or other corresponding information. For example, wireless resources can be indicated using indexes.

[0139] The names used for the above parameters are non-limiting in any respect. Furthermore, the formulas, etc., using these parameters sometimes differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by all appropriate names, therefore the various names assigned to these channels and information elements are non-limiting in any respect.

[0140] In this disclosure, the terms "base station (BS)," "wireless base station," "base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" are used interchangeably. Sometimes, terms such as macro cell, small cell, femtocell, and picocell are also used to refer to base stations.

[0141] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, its coverage area can be divided into several smaller areas, each of which can provide communication services through a base station subsystem (e.g., a small indoor base station RRH: Remote Radio Head). Terms such as "cell" or "sector" refer to a portion or all of the coverage area of ​​at least one of the base station and base station subsystem providing communication services within that coverage area.

[0142] In this disclosure, the base station sending information to the terminal can also be replaced by the base station instructing the terminal on information-based control / actions.

[0143] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" are used interchangeably.

[0144] 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, handheld device, user agent, mobile client, client, or some other appropriate terms.

[0145] At least one of the base station and mobile station can also be referred to as a transmitting device, receiving device, communication device, etc. Furthermore, at least one of the base station and mobile station can also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to a movable object with an arbitrary speed of movement. It also includes situations where the mobile body is stationary. Examples of mobile bodies include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, rear cars, rickshaws, ships (ships and other watercraft), airplanes, rockets, artificial satellites, Drone (registered trademark), multi-rotor helicopters, quadcopter helicopters, balloons, and objects mounted on them. Additionally, the mobile body can also be a mobile body that moves autonomously based on operating commands. It can be a means of transportation (e.g., car, airplane), a mobile body that moves unmanned (e.g., drone, autonomous vehicle), or a robot (humanized or unmanned). Furthermore, at least one of the base station and mobile station also includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station can also be an IoT (Internet of Things) device such as a sensor.

[0146] Furthermore, the base station in this disclosure can also be replaced by a terminal. For example, various methods / implementations of this disclosure can be applied to a structure that replaces the communication between the base station and the terminal with communication between multiple terminals 20 (e.g., it can also be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the terminal 20 can also be configured to have the functions of the base station 10 described above. In addition, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "side"). For example, uplink channel, downlink channel, etc. can also be replaced with side channel.

[0147] Similarly, the terminal in this disclosure can also be replaced by a base station. In this case, the base station can also be configured to have the functions of the terminal described above.

[0148] The terms "determining" and "determining" as used in this disclosure sometimes encompass a variety of actions. For example, "determining" and "determining" may include actions such as judging, calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or other data structure), and ascertaining, which are considered as actions of "determining" and "determining." Furthermore, "determining" and "determining" may include actions such as receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, and accessing (e.g., accessing data in memory), which are considered as actions of "determining" and "determining." Furthermore, "judgment" and "decision" can encompass matters that have undergone resolving, selecting, choosing, establishing, or comparing, and are thus considered as matters that have undergone "judgment" or "decision." That is, "judgment" and "decision" can include matters that have been considered as matters that have undergone "judgment" or "decision." Additionally, "judgment (decision)" can also be replaced by "assuming," "expecting," or "considering," etc.

[0149] The terms "connected," "coupled," or any variations thereof are intended to indicate any direct or indirect connection or combination between two or more elements, including cases where there is one or more intermediate elements between the two elements that are "connected" or "coupled." The combination or connection between elements can be physical, logical, or a combination of these. For example, "access" can be used instead of "connected." In the context of this disclosure, it can be understood that two elements are "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, using electromagnetic energy with wavelengths in the wireless frequency domain, microwave region, and light (including both visible and invisible regions) to "connect" or "couple" to each other.

[0150] The reference signal can be simply called RS (Reference Signal), or, depending on the standard applied, pilot.

[0151] As used in this disclosure, the word "based on" does not mean "based on only" unless otherwise expressly stated. In other words, the word "based on" means both "based on only" and "based on at least".

[0152] Any reference to elements using the designations "first," "second," etc., as 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 way to distinguish between two or more elements. Therefore, references to the first and second elements do not imply that only two elements can be taken or that the first element must precede the second element in any form.

[0153] Alternatively, the "unit" in the structure of the above devices can be replaced with "section", "circuit", "equipment", etc.

[0154] When the terms "include," "including," and variations thereof are used in this disclosure, these terms, like the term "comprising," imply inclusion. Furthermore, the term "or" as used in this disclosure does not refer to XOR.

[0155] A radio frame can consist of one or more frames in the time domain. Each frame in the time domain is called a subframe. A subframe can also consist of one or more time slots in the time domain. A subframe can also be a fixed time length (e.g., 1 ms) independent of the parameter set (numerology).

[0156] A parameter set can be communication parameters applied to at least one of the transmission and reception of a signal or channel. For example, a parameter set can represent at least one of the following: 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, and specific windowing processing performed by the transceiver in the time domain.

[0157] In the time domain, a time slot can be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.). A time slot can be a time unit based on a set of parameters.

[0158] A time slot can contain multiple mini-time slots. Each mini-time slot can consist of one or more symbols in the time domain. Additionally, a mini-time slot can also be called a sub-time slot. A mini-time slot can consist of fewer symbols than a time slot. PDSCH (or PUSCH) transmitted in time units larger than mini-time slots can be called PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using mini-time slots can be called PDSCH (or PUSCH) mapping type B.

[0159] Radio frames, subframes, time slots, mini-time slots, and symbols all represent time units for transmitting signals. Radio frames, subframes, time slots, mini-time slots, and symbols can each be referred to by other corresponding names.

[0160] For example, one subframe can be called a Transmission Time Interval (TTI), multiple consecutive subframes can also be called a TTI, and one time slot or one mini-time slot can also be called a TTI. That is, at least one of the subframe and TTI can be a subframe in the existing LTE (1ms), a period shorter than 1ms (e.g., symbols 1-13), or a period longer than 1ms. Furthermore, the unit representing TTI can also be called a time slot, mini-time slot, etc., instead of a subframe. Alternatively, a time slot can also be called a unit of time. The unit of time can vary for each cell depending on the parameter set.

[0161] Here, TTI refers, for example, to the smallest unit of time for scheduling in wireless communication. For instance, in an LTE system, the base station schedules the allocation of radio resources (bandwidth, transmit power, etc., available to each terminal 20) in units of TTI. However, the definition of TTI is not limited to this.

[0162] The Time Interval (TTI) can be a unit of time for transmitting channel-coded data packets (transmission blocks), code blocks, codewords, etc., or it can be a processing unit such as scheduling or link adaptation. Furthermore, when a TTI is given, the actual time interval (e.g., the number of symbols) that the transmission block, code block, codeword, etc., are mapped to can be shorter than that TTI.

[0163] Furthermore, when one time slot or one mini-time slot is referred to as a TTI, more than one TTI (i.e., more than one time slot or more than one mini-time slot) can also become the minimum time unit for scheduling. In addition, the number of time slots (mini-time slots) constituting the minimum time unit for scheduling can also be controlled.

[0164] A TTI with a duration of 1ms can also be called a normal TTI (TTI in LTE Rel.8-12), a regular TTI, a long TTI, a normal subframe, a regular subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI can 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.

[0165] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) can be understood as a TTI with a duration of more than 1ms, and a short TTI (e.g., a shortened TTI, etc.) can be understood as a TTI with a duration of less than a long TTI but more than 1ms.

[0166] A resource block (RB) is a unit of resource allocation in both the time and frequency domains. In the frequency domain, it can contain one or more consecutive subcarriers. The number of subcarriers contained in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers contained in an RB can also be determined based on the parameter set.

[0167] Furthermore, the temporal domain of an RB can contain one or more symbols, and can be 1 time slot, 1 mini-time slot, 1 subframe, or 1 TTI in length. 1 TTI, 1 subframe, etc., can each be composed of one or more resource blocks.

[0168] In addition, one or more RBs can also be called Physical Resource Block (PRB), Sub-Carrier Group (SCG), Resource Element Group (REG), PRB pair, RB pair, etc.

[0169] Furthermore, a resource block can consist of one or more resource elements (REs). For example, 1 RE can be a radio resource area with 1 subcarrier and 1 symbol.

[0170] The Bandwidth Part (BWP) (also known as partial bandwidth, etc.) can also represent a subset of contiguous common resource blocks (RBs) used for a certain parameter set in a certain carrier. Here, common RBs can be determined by indexing RBs based on a common reference point of that carrier. PRBs can be defined and numbered within a BWP.

[0171] A BWP can include a UL BWP and a DL BWP. For a UE, one or more BWPs can be set within one carrier.

[0172] At least one of the configured BWPs can be active, and it is not assumed that the UE will transmit or receive predetermined signals / channels outside of the active BWP. In addition, "cell", "carrier", etc. in this disclosure can be replaced by "BWP".

[0173] The structures of radio frames, subframes, time slots, mini-time slots, and symbols described above are merely illustrative. For example, the number of subframes contained in a radio frame, the number of time slots in each subframe or radio frame, the number of mini-time slots contained in a time slot, the number of symbols and RBs contained in a time slot or mini-time slot, the number of subcarriers contained in an RB, and the number of symbols in a TTI, symbol length, and cyclic prefix (CP) length can be varied in many ways.

[0174] In this disclosure, for example, in cases where articles are added through translation, such as in English (e.g., a, an, and the), this disclosure may also include cases where the noun following these articles is in a plural form.

[0175] In this disclosure, the phrase "A and B are different" can mean "A and B are not the same." Furthermore, this phrase can also mean "A and B are each different from C." Terms such as "separate" and "combined" can also be interpreted in the same way as "different."

[0176] The various forms / implementations described in this disclosure can be used individually or in combination, and can be switched depending on the execution. Furthermore, the notification of predetermined information (e.g., a "Yes X" notification) is not limited to being explicit, but can also be implicit (e.g., not notifying the predetermined information).

[0177] The present disclosure has been described in detail above, but it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the present disclosure is for illustrative purposes only and is not intended to be limiting.

[0178] Label Explanation

[0179] 10 base stations

[0180] 11 O-DU

[0181] 12A, 12B O-RU

[0182] 110 Dispatch Department

[0183] 120 Receiving Department

[0184] 130 Setting Department

[0185] 140 Control Department

[0186] 20 terminals

[0187] 210 Sending Department

[0188] 220 Receiving Department

[0189] 230 Setting Department

[0190] 240 Control Department

[0191] 1001 processor

[0192] 1002 Storage device

[0193] 1003 Auxiliary storage device

[0194] 1004 Communication device

[0195] 1005 Input Device

[0196] 1006 Output Device

[0197] Vehicle 2001

[0198] 2002 Drive Unit

[0199] 2003 Steering Unit

[0200] 2004 Accelerator Pedal

[0201] 2005 Brake Pedal

[0202] 2006 gearshift lever

[0203] 2007 front wheel

[0204] 2008 rear wheel

[0205] 2009 axle

[0206] 2010 Electronic Control Department

[0207] 2012 Information Service Department

[0208] 2013 Communication Module

[0209] 2021 Current Sensor

[0210] 2022 Speed ​​Sensor

[0211] 2023 Barometric Pressure Sensor

[0212] 2024 vehicle speed sensor

[0213] 2025 Accelerometer

[0214] 2026 Brake Pedal Sensor

[0215] 2027 Gearshift sensor

[0216] 2028 Object Detection Sensor

[0217] 2029 Accelerator Pedal Sensor

[0218] 2030 Driver Assistance Systems Department

[0219] 2031 microprocessor

[0220] 2032 Memory (ROM, RAM)

[0221] 2033 Communication Port (IO Port)

Claims

1. A wireless device comprising: The control unit performs the following settings for multiple endpoints applying beamforming based on an uplink demodulation reference signal: applying at least one window for receiving the demodulation reference signal to each endpoint; and The receiving unit receives the demodulation reference signal in the window.

2. The wireless device according to claim 1, wherein, The control unit applies a window to the setting information of the demodulation reference signal, and the setting information of the demodulation reference signal sets at least one symbol position of the demodulation reference signal.

3. The wireless device according to claim 1, wherein, The control unit allows the application of multiple windows for the setting information of the demodulation reference signal, and the setting information of the demodulation reference signal sets at least one symbol position of the demodulation reference signal.

4. The wireless device according to claim 1, wherein, The receiving unit receives notifications related to the settings performed by the control unit during initial setup or dynamically receives notifications related to the settings performed by the control unit.

5. A base station comprising a wireless device and a distribution device, wherein, The wireless device has: The control unit performs the following settings for multiple endpoints that apply beamforming based on the uplink demodulation reference signal: applying at least one window for receiving the demodulation reference signal to each of the endpoints; The receiving unit receives the demodulation reference signal in the window. Receive notifications from the distributed device related to the settings executed by the control unit; as well as The transmitting unit transmits information related to channel estimation, calculated based on the demodulated reference signal received by the receiving unit, to the distributed device. The dispersing device has: The transmitting unit sends a notification related to the settings to the wireless device; and The receiving unit receives information related to the channel estimation from the wireless device.

6. A communication method performed by a wireless device, comprising the following steps: For multiple endpoints applying beamforming based on an uplink demodulation reference signal, the following settings are performed: At least one window for receiving the demodulation reference signal is applied to each endpoint; and The demodulation reference signal is received in the window.

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