Base station device, repeater device, wireless communication system, and control method and program thereof

Abstract

To provide a base station device, a repeater device, a wireless communication system, and control methods and programs thereof for controlling a beam pattern of an RF repeater that can dynamically control a beam.SOLUTION: A base station device 10 for communicating with a user device 30 with a signal relayed by a repeater device 20 transmits downlink control information DCI including an instruction on a beam pattern to be formed by the repeater device to the repeater device. The repeater device obtains measurement results of a plurality of measurement target signals relayed using different beam patterns from the user device, and determines a beam pattern to be formed by the repeater device based on the measurement results.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a base station apparatus, a repeater apparatus, and a wireless communication system for performing beamforming, as well as a control method and a program therefor. [Background technology]

[0002] Up to now, a communication system has been proposed that performs communication between a base station (BS) and a user equipment (UE) by dynamic beamforming. In Non-Patent Document 1, in order to select an optimal combination from a plurality of beam patterns, the UE side beam pattern is switched within a beam selection time (Beam Sweeping Period), and one or more are selected from the observation results of the synchronization signal (PSS / SSS) and the reference signal (CSI-RS) transmitted by each beam pattern of the BS, and the selected combination is fed back to the BS together with the observation results (RSRP / RSRQ). Based on the feedback, the BS determines the beam to be used in communication with the UE, and communicates with the UE using the determined beam. [Prior art documents] [Non-patent literature]

[0003] [Non-Patent Document 1] 3GPP, TS 38.214, "NR Physical layer procedures for data," v16.6.0, Jun. 2021. Summary of the Invention [Problem to be solved by the invention]

[0004] Here, a wireless relay device called a radio frequency repeater (RF repeater) is used to expand the area coverage of the BS and improve the communication environment of UEs located in dead spots within the area coverage.

[0005] Conventionally, the antenna pattern of an RF repeater was non-directional (omni-pattern) or had fixed directivity. However, technology to dynamically control the beam for an RF repeater has been studied (Non-Patent Document 2), and the challenge was to control the beam that the RF repeater uses for communication.

[0006] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a technique for controlling the beam pattern of an RF repeater that is capable of dynamically controlling the beam. [Means for solving the problem]

[0007] In order to achieve the above object, a base station apparatus according to one aspect of the present invention is a base station apparatus that communicates with a user apparatus by having a signal relayed by a repeater apparatus, To relay multiple measurement target signals A transmitting means for transmitting downlink control information including an instruction for a beam pattern to be formed by the repeater device to the repeater device. The downlink control information includes a plurality of combinations of a beam pattern to be formed by the repeater device to relay a measurement target signal and timing information that specifies the timing of using the beam pattern. It is characterized by: Effect of the Invention

[0008] According to the present invention, it is possible to provide a technique for controlling the beam pattern of an RF repeater that is capable of dynamically controlling a beam. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 shows a communication system including an RF repeater according to an embodiment of the present invention. [Diagram 2] Base station device configuration diagram [Diagram 3] RF repeater configuration diagram [Figure 4] A sequence diagram showing an example of a process executed by a communication system when selecting a beam. [Diagram 5] An explanatory diagram showing the time series change in the beam index of a communication system when a beam is selected. [Figure 6] 1A to 1C are diagrams showing the configuration of downlink control information transmitted from a base station to an RF repeater. [Figure 7] A sequence diagram showing an example of a process executed by a communication system during beam control. [Figure 8] (A) and (B) are diagrams showing an example of resource mapping transmitted from a base station. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, the embodiments will be described in detail with reference to the attached drawings. Note that the following embodiments do not limit the invention according to the claims. Although the embodiments describe a number of features, not all of these features are essential to the invention, and the features may be combined in any manner. Furthermore, in the attached drawings, the same reference numbers are used for the same or similar configurations, and duplicated descriptions are omitted.

[0011] The following describes a process for selecting a beam including the influence of the beam pattern of the RF repeater in a wireless communication system having a radio frequency (RF) repeater capable of controlling directivity (beam pattern), and controlling the beam pattern of the RF repeater.

[0012] (System Configuration) FIG. 1 shows an example of the configuration of a wireless communication system according to this embodiment. In one example, the wireless communication system 1 is a 5G cellular communication system (mobile communication network). However, the present system is not limited to this, and may be, for example, a successor cellular communication system after 5G, or may be a wireless communication system other than a cellular system. The wireless communication system 1 includes a base station device (BS) 10, a radio frequency (RF) repeater 20, and a user equipment (UE) 30. Note that FIG. 1 shows one BS 10, one RF repeater 20, and one UE 30, but the wireless communication system 1 may include at least one of the BS 10, the RF repeater 20, and the UE 30 in a plurality of units.

[0013] The BS 10 is connected to the UE 30 via the RF repeater 20, and manages uplink (UL) traffic from the UE 30 and downlink (DL) traffic to the UE 30. The BS 10 according to this embodiment also controls the beam pattern used by the RF repeater 20 during UL communication and DL communication of the UE 30.

[0014] The RF repeater 20 is a wireless communication device that transmits and receives wireless signals to and from the UE 30 using any one of a plurality of beam patterns. In one example, the RF repeater 20 may be a mobile repeater such as a drone or a relay van. The UE 30 is a mobile communication device such as a smartphone.

[0015] (Configuration of base station equipment) Next, the configuration of the base station device (BS) 10 will be described with reference to FIG.

[0016] The BS 10 includes a processor 201, a memory 202, a storage 203, a modulation / demodulation circuit 204, a switching circuit 205, and an antenna 206. The processor 201, the memory 202, the storage 203, and the modulation / demodulation circuit 204 are connected to each other via a bus so as to be able to communicate with each other.

[0017] The processor 201 executes a program stored in the memory 202 to operate as a measurement schedule generating unit 211, a beam pattern determining unit 212, and a beam pattern control unit 213. In one example, the BS 10 comprises a computer including the processor 201, the memory 202, and the storage 203.

[0018] The measurement schedule generation unit 211 creates a schedule for transmitting a measurement target signal to be measured by the UE 30, and notifies the RF repeater 20 and the UE 30 of the schedule. The beam pattern determination unit 212 determines a beam pattern to be used by the BS 10 and the RF repeater 20 based on the measurement result (feedback) of the measurement target signal received from the UE 30. The beam pattern control unit 213 controls the switching circuit 205 to control the beam pattern formed by the BS 10 based on the beam pattern determined by the beam pattern determination unit 212. The beam pattern control unit 213 also transmits an instruction to the RF repeater 20 to form a predetermined beam pattern.

[0019] The antenna 206 is connected to the switching circuit 205 and can form a plurality of beam patterns. In one example, the antenna 206 includes a plurality of antennas, and the switching circuit 205 controls the beam pattern by switching which of the plurality of antennas is used to transmit and receive radio signals. In another example, the antenna 206 includes an antenna with a plurality of feeding points, and the switching circuit 205 controls the beam pattern by switching which of the plurality of feeding points is used to transmit and receive radio signals. The modulation / demodulation circuit 204 modulates and demodulates radio signals transmitted and received from the antenna 206 via the switching circuit. Although detailed description is omitted, the BS 10 may have other functions that a cellular base station has, such as a network interface for connecting to a core network and traffic management of the connected UE 30.

[0020] (RF repeater configuration) Next, the configuration of the RF repeater 20 will be described with reference to FIG.

[0021] The RF repeater 20 includes a processor 301 , a memory 302 , a storage 303 , a wireless communication circuit 304 , a switching circuit 305 , and an antenna 306 .

[0022] The processor 301 executes a program stored in the memory 302 to operate as a beam pattern notification unit 311, an instruction receiving unit 312, and a beam pattern control unit 313. In one example, the RF repeater 20 includes a computer including the processor 301, the memory 302, and the storage 303.

[0023] The beam pattern notification unit 311 notifies the BS 10 of the number of beam patterns that the RF repeater 20 can form. The instruction reception unit 312 receives a notification from the BS 10 regarding the time slot in which the measurement target signal is transmitted, and determines the beam pattern in each time slot. The instruction reception unit 312 also receives an instruction from the BS 10 regarding the beam pattern to be used by the RF repeater 20. The beam pattern control unit 313 controls the switching circuit 305 based on the instruction received by the instruction reception unit 312. The switching circuit 305 and the antenna 306 are similar to the switching circuit 205 and the antenna 206 in FIG. 2, and therefore the explanation is omitted. The beam pattern control unit 313 relays the measurement target signal while switching the beam pattern as described later. The beam pattern control unit 313 also relays the uplink traffic and the downlink traffic using the beam pattern instructed by the BS 10 as described later.

[0024] (Beam selection processing) Next, we will explain the beam selection process in which UE 30 measures measurement target signals such as synchronization signals (Primary Synchronization Signal (PSS) or Secondary Synchronization Signal (SSS)) and reference signals (CSI-RS) transmitted by BS 10 and feeds back the measurement results to BS 10.

[0025] In a beam selection process when the RF repeater 20 is present, the signal strength of a measurement target signal received by the UE 30 may change depending on a combination of beam patterns of the BS 10, the RF repeater 20, and the UE 30. For this reason, the wireless communication system 1 according to the present embodiment changes a signal to be transmitted in the beam selection process based on the number of beam patterns formed by the RF repeater 20.

[0026] An example of processing executed by the wireless communication system 1 according to the present embodiment will be described with reference to FIG.

[0027] 4 is started when the UE 30 connects to the BS 10 or when a request to execute the beam selection process is transmitted from the UE 30 to the BS 10. In one example, the BS 10 may determine to execute the beam selection process at a predetermined time interval.

[0028] First, in S401, the BS 10 issues a measurement start notification to start measurement for beam selection to the RF repeater 20. In one example, the BS 10 transmits a request signal to the RF repeater 20 to request notification of the number of beam patterns that the RF repeater 20 can form, and the RF repeater 20 may interpret the request signal as a notification of execution of beam selection processing.

[0029] Next, the RF repeater 20 notifies the number of beam patterns that the RF repeater 20 can form in S402. The BS 10, which has received the notification of the number of beam patterns that the RF repeater 20 can form in S402, determines a schedule for transmitting the measurement target signal in beam selection based on the number of beam patterns that the BS 10 can form and the number of beam patterns that the RF repeater 20 can form in S403. In addition, in one example, the schedule may be determined based on the number of beam patterns that the BS 10 can form, the number of beam patterns that the RF repeater 20 can form, and the number of beam patterns that the UE 30 can form in S402. For example, the length of the time slot in which the measurement target signal of the same series is transmitted may be determined based on the number of beam patterns that the UE 30 can form, and the number of time slots may be determined based on the number of beam patterns that the BS 10 and the RF repeater 20 can form.

[0030] Next, in S404, the BS 10 transmits schedule information capable of identifying a schedule for transmitting the measurement target signal to the RF repeater 20, and the RF repeater 20 relays the schedule information and transmits it to the UE 30. In one example, the schedule information transmits a transmission timing indicating a time slot in which the measurement target signal is transmitted, and the number of sequences of the measurement target signal. It may also include the length of the time slot in which the measurement target signal is transmitted. In one example, the transmission timing may be the start timing of the first time slot in which the measurement target signal is transmitted, among a plurality of time slots provided consecutively in time.

[0031] Next, in S405, the BS 10 transmits the measurement target signal based on the schedule information transmitted in S404. The RF repeater 20, as described below, switches the beam pattern in accordance with the time slot in which the measurement target signal is transmitted, and relays the measurement target signal. The UE 30 switches the beam pattern within the time slot in which the measurement target signal is transmitted in S406, and measures the measurement target signal. The UE 30 measures at least one of the measurement parameters of the received signal strength and the signal-to-noise ratio (SN ratio) of the measurement target signal for each beam pattern of the UE 30, identifies the signal sequence (signal pattern) with the highest received signal strength or SN ratio, and generates a measurement result.

[0032] Next, after measuring all the signals to be measured, the UE 30 feeds back the measurement results generated in S406. The feedback of the measurement results includes information capable of identifying the series of the signals to be measured that exhibit the highest measurement parameter among the signals to be measured by the UE 30. In addition, the beam pattern ID that exhibits the highest measurement parameter is stored as the beam pattern to be used for transmitting and receiving wireless signals to and from the RF repeater 20.

[0033] When the BS 10 receives feedback indicating the sequence of the signal to be measured from the UE 30, in S408, the BS 10 determines from the feedback the beam patterns to be used by the BS 10 and the RF repeater 20 for transmitting and receiving wireless signals.

[0034] As described above, according to this embodiment, the BS 10 can grasp the beam pattern that the BS 10 uses to transmit and receive radio signals with the RF repeater 20, and the beam pattern that the RF repeater 20 uses to transmit and receive radio signals with the UE 30.

[0035] Here, with reference to FIG. 5, a description will be given of the sequence of the measurement target signal transmitted by the BS 10, and the beam patterns used by the BS 10, the RF repeater 20, and the UE 30 for transmitting and receiving the measurement target signal.

[0036] The transmission period 500 of the signal to be measured is divided into time slots 510 that are provided consecutively in time corresponding to the number of combinations of the i beam patterns that the BS 10 can form and the j beam patterns that the RF repeater 20 can form. 1 ~510 n (hereinafter, they may be referred to as time slots 510 without distinction), where n=i×j.

[0037] In each time slot 510, a signal to be measured, which is coded with a different sequence for each time slot 510, is transmitted multiple times. 1 is the k sub-slots 520 that the UE 30 can form. 11 ~520 1k (hereinafter, sometimes referred to as sub-slots 520 without distinction). In this embodiment, a description will be given assuming that one measurement target signal is transmitted in each sub-slot 520, but a measurement target signal of the same signal pattern (sequence) may be transmitted multiple times. The UE 30 detects a sub-slot 520 in which a measurement target signal is measured at least once. 11 ~520 nk As shown in FIG. 5, the beam pattern is switched every sub-slot 520. 11 In this case, UE 30 receives with beam pattern 1 and in subslot 520 12 Then, UE 30 receives with beam pattern 2 and in subslot 520 1k In this case, the UE 30 receives the signal using beam pattern k. By repeating this process for each subslot, the signal to be measured can be measured with a different combination of beam patterns for the BS 10, the RF repeater 20, and the UE 30 in every subslot.

[0038] As described above, according to the base station device of this embodiment, in a plurality of time slots in which different series of measurement target signals are transmitted, the measurement target signals are transmitted using the same beam pattern. Also, in a plurality of time slots in which the base station device transmits the measurement target signals using the same beam pattern, the RF repeater transmits the measurement target signals while switching the beam pattern. In this way, by receiving a series of measurement target signals with good reception conditions from the user device, the base station device can identify the beam pattern to be used by the base station device and the beam pattern to be used by the RF repeater.

[0039] (Beam pattern control) Next, a method for the BS 10 to control the beam pattern of the RF repeater 20 will be described.

[0040] The BS 10 may need to control the beam pattern of the RF repeater 20 according to the destination UE 30. Here, it is considered to transmit downlink control information (DCI) in a physical downlink control channel (PDCCH). However, the DCI defined in the current standards such as the Third Generation Partnership Project (3GPP) is premised on storing information used for decoding by the UE 30. For this reason, the DCI needs to include the modulation method of the downlink signal, etc., which causes a problem of large signaling overhead. For this reason, in the wireless communication system according to this embodiment, a new DCI format is defined in order to transmit an instruction of the beam pattern to the RF repeater.

[0041] 6(A) to (C) show an example of a DCI format according to this embodiment.

[0042] The DCI format 600 shown in FIG. 6(A) includes a format type 601, a destination 602, a beam instruction 603, and a slot timing 604.

[0043] Format type 601 indicates that the DCI format is a DCI format for instructing the RF repeater 20 of a beam pattern. Destination 602 indicates an identifier of the RF repeater 20 that is the target of beam pattern control. Beam instruction 603 indicates a beam indicator of the RF repeater 20. In one example, the beam instruction 603 is 4 bits, and slot timing 604 is timing information indicating a slot identifier for transmitting and receiving radio signals to and from the UE 30 using the beam pattern instructed by the beam instruction 603.

[0044] Fig. 6(B) is an example of a DCI format for instructing beam patterns to multiple RF repeaters 20. In the example of Fig. 6(B), it is assumed that one DCI format contains instructions for one RF repeater 20.

[0045] The DCI format 620 shown in FIG. 6B includes a format type 621, an instruction number 622, and a destination 623. 1~l , Beam Direction 624 1~l , Slot Timing 625 1~l Includes.

[0046] The format type 621 indicates that the DCI format is a DCI format for instructing beam patterns to multiple RF repeaters 20. The number of instructions 622 indicates the number of combinations of destinations, beam instructions, and slot timings included in the DCI format. 1~l , Beam Direction 624 1~l , Slot Timing 625 1~l 6A. The DCI format shown in FIG. 6B allows a single DCI to instruct a beam pattern to multiple RF repeaters.

[0047] Fig. 6(C) is a diagram for instructing beam patterns at a plurality of slot timings to one RF repeater 20. In the example of Fig. 6(C), it is assumed that beam patterns at l slot timings are instructed.

[0048] The DCI format 640 shown in FIG. 6C includes a format type 641, an instruction number 642, a destination 643, and a beam instruction 644. 1~l , and slot timing 645 1~l Includes.

[0049] The format type 641 indicates that the DCI format is a DCI format that instructs one RF repeater 20 to use beam patterns at multiple timings. The instruction number 642 indicates the number of slot timings included in the DCI format. 1~l , and slot timing 645 1~l are the same as destination 602, beam instruction 603, and slot timing 604 in Fig. 6(A), and therefore description thereof will be omitted. According to the DCI format shown in Fig. 6(C), it is possible to instruct a beam pattern at multiple timings to one RF repeater by one DCI.

[0050] Next, an example of processing executed by the wireless communication system according to the present embodiment will be described with reference to FIG.

[0051] First, in S701, the BS 10 determines the timing for transmitting and receiving radio signals to and from the UE 30 in response to the arrival of downlink data addressed to the UE 30 communicating via the RF repeater 20 and a request for uplink transmission.

[0052] Next, in S702, the BS 10 generates DCI to instruct the RF repeater 20 on the slot timing and the beam pattern to be used at the slot timing, based on the UE 30 that is the destination of the downlink data. In one example, the BS 10 generates DCI to instruct the RF repeater 20 on the beam pattern to be used, determined based on the feedback from the UE 30 in S407 of Fig. 4, and the timing determined in S701.

[0053] Next, in S703, the BS 10 transmits the DCI generated in S702 to the RF repeater 20. The RF repeater 20 determines the slot timing and beam pattern specified in the DCI received in S703 (S704), and relays wireless signals between the BS 10 and the UE 30 using the beam pattern at the slot timing (S705). This allows the BS 10 to control the beam pattern of the RF repeater 20.

[0054] (Example of resource mapping) Since the RF repeater 20 cannot predict when DCI addressed to the RF repeater 20 will be transmitted, it performs blind decoding to attempt to detect DCI addressed to the RF repeater 20 within a search space defined by at least one of frequency and time.

[0055] Here, with reference to FIGS. 8(A) and 8(B), a description will be given of an example of resource mapping for transmitting DCI addressed to the RF repeater 20. FIG.

[0056] Fig. 8(A) is an example of resource mapping in the case where DCI addressed to the RF repeater 20 is transmitted in the same search space 800 as DCI addressed to the UE 30. The search space 800 includes a control channel element (CCE) 801 addressed to the UE 30 and a CCE 802 addressed to the RF repeater 20. The CCE addressed to the RF repeater 20 is a CCE generated based on the DCI shown in Figs. 6(A) to 6(C), and is subjected to processing such as addition of a Cyclic Redundancy Check (CRC) bit and masking using a network identifier such as a Radio Network Temporary Identifier (RNTI) in the same manner as the DCI addressed to the UE 30. As a result, only a predetermined device having a matching network identifier succeeds in decoding the CRC, and other devices having a different network identifier fail to decode due to a CRC error.

[0057] As shown in FIG. 8(A), DCI addressed to the RF repeater 20 is transmitted within the same search space as DCI addressed to the UE 30, which requires the RF repeater 20 and the UE 30 to search for CCEs in a wide range of search spaces.

[0058] In Fig. 8(B), DCI addressed to RF repeater 20 is transmitted in search space 840 that is different in at least one of frequency and time from search space 820 in which DCI addressed to UE 30 is transmitted. In the example of Fig. 8(B), search space 820 includes CCE 821 addressed to UE 30, and search space 840 includes CCE 842 addressed to RF repeater 20. Therefore, UE 30 only needs to determine whether or not there is a CCE addressed to itself in search space 820, and RF repeater 20 only needs to determine whether or not there is a CCE addressed to itself in search space 840, so that the search load can be reduced.

[0059] On the other hand, according to the resource mapping shown in Fig. 8(A), it is possible to transmit CCEs addressed to the RF repeater 20 without changing the existing resource mapping. Also, compared to Fig. 8(B), it is possible to reduce division loss of the search space.

[0060] <Other embodiments> The invention is not limited to the above-described embodiment, and various modifications and variations are possible within the scope of the gist of the invention.

[0061] For example, as described with reference to Figures 8(A) and 8(B), a CCE addressed to the RF repeater 20 may be transmitted so that it cannot be decoded without using the RNTI of the RF repeater 20 or the group to which the RF repeater 20 belongs. For this reason, in one example, the DCI formats shown in Figures 6(A) to 6(C) may not include destinations 602, 623, and 643.

[0062] In this embodiment, the description of the beam pattern with which the RF repeater 20 receives a signal from the BS 10 is omitted. In one example, the RF repeater 20 may receive a signal from the BS 10 in an omni pattern or a predetermined beam pattern. Alternatively, the RF repeater 20 may perform a beam selection process between the BS 10 and the RF repeater 20 when connected to the BS 10, and may determine in advance the beam pattern to be used when the RF repeater 20 receives a signal from the BS 10. Alternatively, the BS 10 may determine the number of time slots in the measurement period based on the number of beam patterns that the BS 10 can use for transmission, the number of beam patterns that the RF repeater 20 can use for reception, and the number of beam patterns that the RF repeater 20 can use for transmission.

[0063] Also, the BS 10 according to the present embodiment has been described as acquiring information on the number of beam patterns that can be formed from the RF repeater 20. However, in one example, the wireless communication system 1 may predefine the number of beam patterns that the RF repeater 20 uses when relaying a measurement target signal, and in this case, the notification in S402 in FIG. 4 may be omitted. [Explanation of symbols]

[0064] 1: wireless communication system, 10: base station device, 20: RF repeater, 30: user device

Claims

1. A base station device that communicates with a user device by relaying a signal by a repeater device, a transmitting means for transmitting downlink control information to the repeater device, the downlink control information including an instruction for a beam pattern to be formed by the repeater device in order to relay a plurality of signals to be measured; A base station device characterized in that the downlink control information includes multiple combinations of a beam pattern that the repeater device should form to relay a signal to be measured and timing information that specifies the timing at which the beam pattern is to be used.

2. An acquisition means for acquiring from the user device measurement results of a plurality of measurement target signals relayed by the repeater device using different beam patterns; a determination unit that determines a beam pattern to be formed by the repeater device based on the measurement result acquired by the acquisition unit; The base station apparatus according to claim 1 , further comprising:

3. The base station apparatus according to claim 1 or 2, wherein the downlink control information further includes timing information that specifies a timing for using a beam pattern.

4. 4. The base station apparatus according to claim 1, wherein the downlink control information includes beam pattern instructions for a plurality of different repeater apparatuses.

5. 5. The base station apparatus according to claim 1, wherein the downlink control information is transmitted in the same search space as downlink control information transmitted to a user apparatus.

6. The base station apparatus according to claim 1 , wherein the downlink control information is transmitted in a search space different from a search space for downlink control information transmitted to a user apparatus.

7. 7. The base station apparatus according to claim 5, wherein the downlink control information is encoded and transmitted using a network identifier of the repeater apparatus.

8. A repeater device that relays communication between a base station device and a user device, receiving means for receiving downlink control information including an instruction for a beam pattern formed by the repeater device to repeat a plurality of signals to be measured; A control means for controlling a beam pattern based on the downlink control information received by the receiving means; Equipped with The repeater device is characterized in that the downlink control information includes multiple combinations of beam patterns that the repeater device should form to relay signals to be measured and timing information that specifies the timing at which the beam patterns are to be used.

9. A wireless communication system including a repeater device that relays communication between a base station device and a user device, and the base station device, the base station device includes a transmitting means for transmitting downlink control information to the repeater device, the downlink control information including an instruction for a beam pattern to be formed by the repeater device in order to relay a plurality of signals to be measured; The repeater device includes a control means for controlling a beam pattern based on the received downlink control information, A wireless communication system characterized in that the downlink control information includes multiple combinations of a beam pattern that the repeater device should form to relay a signal to be measured and timing information that specifies the timing at which the beam pattern is to be used.

10. A method for controlling a base station device that communicates with a user device by having a signal relayed by a repeater device, the method comprising: transmitting downlink control information to the repeater device, the downlink control information including an instruction for a beam pattern to be formed by the repeater device in order to relay a plurality of measurement target signals; A control method characterized in that the downlink control information includes multiple combinations of a beam pattern that the repeater device should form to relay a signal to be measured and timing information that specifies the timing at which the beam pattern is to be used.

11. A method for controlling a repeater device that relays communication between a base station device and a user device, comprising: receiving downlink control information including an indication of a beam pattern to be formed by the repeater device to repeat a plurality of signals to be measured; Controlling a beam pattern based on the received downlink control information; Including, A control method characterized in that the downlink control information includes multiple combinations of a beam pattern that the repeater device should form to relay a signal to be measured and timing information that specifies the timing at which the beam pattern is to be used.

12. A control method for a wireless communication system including a repeater device that relays communication between a base station device and a user device, and the base station device, The base station device transmits downlink control information to the repeater device, the downlink control information including an instruction for a beam pattern to be formed by the repeater device in order to relay a plurality of signals to be measured; The repeater device controls a beam pattern based on the received downlink control information; Including, A control method characterized in that the downlink control information includes multiple combinations of a beam pattern that the repeater device should form to relay a signal to be measured and timing information that specifies the timing at which the beam pattern is to be used.

13. A transmitting step of transmitting downlink control information including an instruction of a beam pattern to be formed by the repeater device in order to relay a plurality of measurement target signals to a computer of a base station device that communicates with a user device by having a signal relayed by the repeater device, to the repeater device; A program for executing a control method, the downlink control information including multiple combinations of a beam pattern that the repeater device should form to relay a signal to be measured and timing information that specifies the timing for using the beam pattern.

14. A repeater device that relays communications between a base station device and a user device includes: receiving downlink control information including an indication of a beam pattern to be formed by the repeater device for repeating a plurality of signals to be measured; a control step of controlling a beam pattern based on the received downlink control information; Including, A program for executing a control method, the downlink control information including multiple combinations of a beam pattern that the repeater device should form to relay a signal to be measured and timing information that specifies the timing for using the beam pattern.

15. A repeater device that relays communication between a base station device and a user device, and a computer of a wireless communication system including the base station device, a transmitting step of transmitting downlink control information to the repeater device, the downlink control information including an instruction for a beam pattern to be formed by the repeater device in order to relay a plurality of signals to be measured; a control step of controlling a beam pattern of the repeater device based on the received downlink control information; Including, A program for executing a control method, the downlink control information including multiple combinations of a beam pattern that the repeater device should form to relay a signal to be measured and timing information that specifies the timing for using the beam pattern.

Images