WO2023032418A1 - 基地局装置、リピータ装置、および無線通信システム、ならびにこれらの制御方法およびプログラム - Google Patents
基地局装置、リピータ装置、および無線通信システム、ならびにこれらの制御方法およびプログラム Download PDFInfo
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- 238000004891 communication Methods 0.000 title claims description 36
- 238000000034 method Methods 0.000 title claims description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 238000005259 measurement Methods 0.000 claims description 50
- 230000008569 process Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 12
- 238000012545 processing Methods 0.000 description 11
- 238000013507 mapping Methods 0.000 description 7
- 230000010267 cellular communication Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/26—Cell enhancers or enhancement, e.g. for tunnels, building shadow
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
- H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/155—Ground-based stations
- H04B7/15528—Control of operation parameters of a relay station to exploit the physical medium
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
Definitions
- the present invention relates to a base station apparatus, a repeater apparatus, a wireless communication system, and control methods and programs for performing beamforming.
- Non-Patent Document 1 in order to select the optimum combination from a plurality of beam patterns, it is transmitted in each beam pattern of the BS while switching the beam pattern on the UE side within the beam selection time (Beam Sweeping Period)
- PSS/SSS synchronization signal
- CSI-RS reference signal
- the BS determines a beam to be used for communication with the UE, and uses the determined beam to communicate with the UE.
- a radio repeater called a radio frequency repeater (RF repeater) is used to expand the area coverage of BSs and improve the communication environment for UEs located in dead spots within the area coverage.
- RF repeater radio frequency repeater
- Non-Patent Document 2 Non-Patent Document 2
- the present invention has been made in view of the above problems, and aims to provide a technique for selecting a beam pattern of an RF repeater capable of dynamically controlling the beam.
- a base station apparatus is a base station apparatus that communicates with a user apparatus by relaying a signal by a repeater apparatus, Identifying transmission timings of a plurality of measurement target signals transmitted by the base station apparatus, the plurality of measurement target signals including measurement target signals having a plurality of signal patterns including a first signal pattern and a second signal pattern.
- a notification means for notifying the repeater device of possible information; transmitting means for transmitting the signals to be measured of the first and second signal patterns with the same beam pattern; characterized by comprising
- FIG. 1 is a diagram showing a communication system including an RF repeater according to this embodiment.
- FIG. 2 is a configuration diagram of a base station apparatus.
- FIG. 3 is a configuration diagram of an RF repeater.
- FIG. 4 is a sequence diagram showing an example of processing executed by the communication system during beam selection.
- FIG. 5 is an explanatory diagram showing time-series changes in the beam index of the communication system at the time of beam selection.
- FIG. 6A is a diagram showing the structure of downlink control information transmitted by a base station to an RF repeater.
- FIG. 6B is a diagram showing the structure of downlink control information transmitted by the base station to the RF repeater.
- FIG. 6C is a diagram showing the structure of downlink control information transmitted by the base station to the RF repeater.
- FIG. 7 is a sequence diagram showing an example of processing executed by the communication system during beam control.
- FIG. 8A is a diagram showing an example of resource mapping transmitted from a base station.
- FIG. 8B is a diagram showing an example of resource mapping transmitted from the base station.
- FIG. 1 shows a configuration example of a radio communication system according to this embodiment.
- the radio communication system 1 is a 5G cellular communication system (mobile communication network) in one example.
- the present system is not limited to this, and may be, for example, a successor cellular communication system after 5G, or a wireless communication system other than cellular.
- a radio communication system 1 includes a base station apparatus (BS) 10 , a radio frequency (RF) repeater 20 and user equipment (UE) 30 . Although one BS 10, one RF repeater 20, and one UE 30 are shown in FIG.
- the BS 10 is connected from 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. Also, the BS 10 according to this embodiment controls the beam pattern used by the RF repeater 20 during UL communication and DL communication of the UE 30.
- the RF repeater 20 is a radio communication device that transmits and receives radio signals to and from the UE 30 using any of a plurality of beam patterns.
- RF repeater 20 may be a mobile repeater such as a drone or relay van.
- UE 30 is a mobile communication device such as a smart phone.
- the BS 10 comprises a processor 201, a memory 202, a storage 203, a modem circuit 204, a switching circuit 205, and an antenna 206.
- Processor 201, memory 202, storage 203, and modulation/demodulation circuit 204 are communicably connected to each other via a bus.
- the processor 201 operates as a measurement schedule generation unit 211, a beam pattern determination unit 212, and a beam pattern control unit 213 by executing programs stored in the memory 202.
- BS 10 comprises a computer including processor 201 , memory 202 and storage 203 .
- the measurement schedule generator 211 creates a schedule for transmitting the 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 the beam pattern to be used by the BS 10 and the RF repeater 20 based on the measurement result (feedback) of the signal to be measured received from the UE 30 .
- the beam pattern control unit 213 controls the beam pattern formed by the BS 10 by controlling the switching circuit 205 based on the beam pattern determined by the beam pattern determination unit 212 . Also, the beam pattern control unit 213 transmits an instruction to form a predetermined beam pattern to the RF repeater 20 .
- Antenna 206 is connected to switching circuit 205 and is capable of forming a plurality of beam patterns.
- the antenna 206 includes multiple antennas, and the switching circuit 205 controls the beam pattern by switching which of the multiple antennas is used to transmit and receive wireless signals.
- the antenna 206 includes an antenna having 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 the radio signal.
- a modulation/demodulation circuit 204 modulates/demodulates a radio signal transmitted/received from an antenna 206 via a switching circuit 205 .
- the BS 10 may have other functions of the cellular base station, such as a network interface for connecting to the core network and traffic management of the connected UE 30.
- the RF repeater 20 includes a processor 301, memory 302, storage 303, wireless communication circuit 304, switching circuit 305, and antenna 306.
- the processor 301 operates as a beam pattern notification unit 311 , an instruction reception unit 312 and a beam pattern control unit 313 by executing programs stored in the memory 302 .
- RF repeater 20 comprises a computer including processor 301 , memory 302 and storage 303 .
- 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 receiving unit 312 receives a notification regarding the time slot in which the signal to be measured is transmitted from the BS 10, and determines the beam pattern in each time slot. Also, the instruction receiving unit 312 receives an instruction of the beam pattern to be used by the RF repeater 20 from the BS 10 .
- the beam pattern control section 313 controls the switching circuit 305 based on the instruction received by the instruction receiving section 312 . Since the switching circuit 305 and the antenna 306 are the same as the switching circuit 205 and the antenna 206 in FIG. 2, their description is omitted.
- the beam pattern control unit 313 relays the signal to be measured while switching the beam pattern as described later. Also, the beam pattern control unit 313 relays uplink traffic and downlink traffic using a beam pattern instructed by the BS 10, as will be described later.
- the UE 30 measures a signal to be measured such as a synchronization signal (Primary Synchronization Signal (PSS) or Secondary Synchronization Signal (SSS)) or a reference signal (CSI-RS) transmitted by the BS 10, and the measurement result is sent to the BS 10.
- a signal to be measured such as a synchronization signal (Primary Synchronization Signal (PSS) or Secondary Synchronization Signal (SSS)) or a reference signal (CSI-RS) transmitted by the BS 10
- PSS Primary Synchronization Signal
- SSS Secondary Synchronization Signal
- CSI-RS reference signal
- the radio communication system 1 changes the signal to be transmitted in beam selection processing based on the number of beam patterns formed by the RF repeater 20 .
- the beam selection process shown in FIG. 4 is started when the UE 30 connects to the BS 10 or when the UE 30 transmits a beam selection process execution request to the BS 10.
- the BS 10 may determine to perform the beam selection process at predetermined time intervals.
- the BS 10 notifies the RF repeater 20 of starting measurement for beam selection.
- the BS 10 transmits to the RF repeater 20 a request signal requesting notification of the number of beam patterns that can be formed by the RF repeater 20, and the RF repeater 20 interprets the request signal as a beam selection processing execution notification. You may
- the RF repeater 20 notifies the number of beam patterns that the RF repeater 20 can form in S402.
- the BS 10 receives the number of beam patterns that can be formed by the BS 10 and the number of beam patterns that can be formed by the RF repeater 20 in S403. determines the schedule for transmitting the signal to be measured in beam selection. In one example, the schedule may be determined based on the number of beam patterns that can be formed by the BS 10, the number of beam patterns that can be formed by the RF repeater 20, and the number of beam patterns that can be formed by the UE 30 in S402. .
- the length of the time slot in which the signal to be measured of the same sequence is transmitted is determined based on the number of beam patterns that can be formed by the UE 30, and the number of time slots is the beam pattern that can be formed by the BS 10 and the RF repeater 20. It may be determined based on numbers.
- the BS 10 transmits schedule information that can identify the schedule for transmitting the signal to be measured to the RF repeater 20 in S404, and the RF repeater 20 relays the schedule information and transmits it to the UE 30.
- the schedule information transmits the transmission timing indicating the time slot in which the signal to be measured is transmitted, and the number of sequences of the signal to be measured. It may also include the length of the time slot in which the signal to be measured is transmitted.
- the transmission timing may be the start timing of the first time slot in which the signal to be measured is transmitted, among a plurality of time slots provided consecutively in time.
- BS 10 transmits the signal to be measured based on the schedule information transmitted in S404.
- the RF repeater 20 relays the signal to be measured by switching the beam pattern according to the time slot in which the signal to be measured is transmitted.
- the UE 30 measures the signal to be measured by switching the beam pattern within the time slot in which the signal to be measured is transmitted in S406.
- the UE 30 measures at least one of the measurement parameters of the received signal strength and signal-to-noise ratio (SN ratio) of the signal to be measured for each beam pattern of the UE 30, and selects the sequence of the signal with the highest received signal strength or SN ratio Identify (signal patterns) to generate measurements.
- SN ratio signal-to-noise ratio
- the measurement result feedback includes information that can identify the sequence of the measurement target signal that showed the highest measurement parameter among the measurement target signals measured by the UE 30 . Also, the beam pattern ID indicating the highest measurement parameter is stored as the beam pattern used for transmitting/receiving radio signals to/from the RF repeater 20 .
- the BS 10 When the BS 10 receives the feedback indicating the sequence of the signal to be measured from the UE 30, in S408, from the feedback, the BS 10 and the RF repeater 20 determine the beam pattern used for transmitting and receiving radio signals.
- the beam pattern used by the BS 10 for transmitting and receiving radio signals between the BS 10 and the RF repeater 20 and the radio beam pattern between the RF repeater 20 and the UE 30 It is possible to grasp the beam pattern used for transmitting and receiving signals.
- the transmission period 500 of the signal to be measured is provided continuously in time corresponding to the number of combinations of i beam patterns that can be formed by the BS 10 and j beam patterns that can be formed by the RF repeater 20.
- each time slot 510 a signal to be measured encoded with a different sequence is transmitted multiple times for each time slot 510, and one time slot 510 1 is composed of k subslots 520 11 to 520 that can be formed by the UE 30. 1k (hereinafter sometimes referred to as sub-slot 520 without distinction).
- one signal to be measured is transmitted in each sub-slot 520, but the signal to be measured having the same signal pattern (sequence) may be transmitted multiple times.
- the UE 30 switches the beam pattern for each sub-slot 520 11 to 520 nk in which the signal to be measured is measured at least once. As shown in FIG.
- the UE 30 receives on beam pattern 1
- the UE 30 receives on beam pattern 2
- on subslot 520 1k the UE 30 receives on beam pattern k. do.
- the signal to be measured can be measured with different combinations of beam patterns of the BS 10, RF repeater 20, and UE 30 in all sub-slots.
- the signal to be measured is transmitted using the same beam pattern in a plurality of time slots in which signals to be measured of different sequences are transmitted.
- the RF repeater transmits the signal to be measured while switching the beam pattern in a plurality of time slots in which the signal to be measured is transmitted using the same beam pattern of the base station apparatus.
- beam pattern control Next, how the BS 10 controls the beam pattern of the RF repeater 20 will be described.
- the BS 10 may need to control the beam pattern of the RF repeater 20 according to the destination UE 30.
- DCI downlink control information
- PDCCH physical downlink control channel
- DCI defined in standards such as the current 3rd Generation Partnership Project (3GPP (registered trademark)) assumes that information used for decoding by UE 30 is stored. For this reason, the DCI needs to include the modulation scheme of the downlink signal, etc., and there is a problem that the signaling overhead increases. Therefore, in the wireless communication system according to this embodiment, a new DCI format is defined for transmitting beam pattern instructions to the RF repeaters.
- 6A to 6C show examples of DCI formats according to this embodiment.
- the DCI format 600 shown in FIG. 6A includes format type 601, destination 602, beam indication 603, and slot timing 604.
- a format type 601 indicates that the DCI format is a DCI format that instructs the beam pattern to the RF repeater 20 .
- Destination 602 indicates the identifier of the RF repeater 20 whose beam pattern is to be controlled.
- Beam indication 603 indicates the beam indicator of RF repeater 20 .
- beam indication 603 is 4 bits
- slot timing 604 is timing information indicating a slot identifier for transmitting and receiving radio signals with UE 30 using the beam pattern indicated by beam indication 603 .
- FIG. 6B is an example of a DCI format that indicates beam patterns to multiple RF repeaters 20 .
- the DCI format 620 shown in FIG. 6B includes a format type 621, an indication number 622, a destination 623 1-l , a beam indication 624 1-l , and a slot timing 625 1-l .
- a format type 621 indicates that the DCI format is a DCI format that directs beam patterns to multiple RF repeaters 20 .
- the number of indications 622 indicates the number of combinations of destination, beam indication, and slot timing contained within the DCI format.
- Destinations 623 1-l , beam instructions 624 1-l , and slot timings 625 1-l are the same as destinations 602, beam instructions 603, and slot timings 604 in FIG. According to the DCI format shown in FIG. 6B, one DCI can direct beam patterns to multiple RF repeaters.
- FIG. 6C is a diagram for instructing beam patterns at a plurality of slot timings to one RF repeater 20.
- the DCI format 640 shown in FIG. 6C includes format type 641, indication number 642, destination 643, beam indications 644 1-l , and slot timings 645 1-l .
- a format type 641 indicates that the DCI format is a DCI format that instructs a beam pattern to be used for one RF repeater 20 at multiple timings.
- the indicated number 642 indicates the number of slot timings contained within the DCI format.
- Destination 643, beam indications 644 1-l , and slot timings 645 1-l are the same as destination 602, beam indications 603, and slot timings 604 in FIG. 6A, so descriptions thereof are omitted.
- one DCI can instruct a beam pattern to one RF repeater at a plurality of timings.
- the BS 10 determines the timing of transmitting/receiving radio signals to/from the UE 30 in response to the arrival of downlink data addressed to the UE 30 communicating via the RF repeater 20 and the request for uplink transmission.
- the BS 10 generates a DCI that instructs the RF repeater 20 on the slot timing and the beam pattern to be used at that slot timing, based on the UE 30 that is the destination of the downlink data.
- a DCI is generated that indicates the beam pattern that the RF repeater 20 should use determined based on the feedback from the UE 30 in S407 of FIG. 4 and the timing determined in S701.
- the BS 10 transmits the DCI generated in S702 to the RF repeater 20 in S703.
- the RF repeater 20 determines the slot timing and beam pattern specified by the DCI received in S703 (S704), and uses the beam pattern at the slot timing to transmit radio signals between the BS 10 and the UE 30. Relay is performed (S705). This allows BS 10 to control the beam pattern of RF repeater 20 .
- the RF repeater 20 Since the RF repeater 20 cannot predict when the DCI destined for the RF repeater 20 will be transmitted, it attempts to detect the DCI destined for the RF repeater 20 within a search space defined by at least one of frequency and time. Perform blind decoding.
- FIG. 8A is an example of resource mapping when DCI addressed to RF repeater 20 is transmitted within the same search space 800 as DCI addressed to UE 30.
- FIG. Search space 800 includes control channel element (CCE) 801 addressed to UE 30 and CCE 802 addressed to RF repeater 20 .
- the CCE addressed to the RF repeater 20 is a CCE generated based on the DCI shown in FIGS. Processing such as masking using a network identifier such as (RNTI) is performed. As a result, only a predetermined device with a matching network identifier successfully decodes the CRC, and other devices with a non-matching network identifier fail in decoding due to a CRC error.
- RNTI network identifier
- DCI addressed to RF repeater 20 is transmitted within the same search space as DCI addressed to UE 30, so that RF repeater 20 and UE 30 search for CCEs in a wide range of search spaces. There is a need.
- DCI destined for 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 destined for UE 30 is transmitted.
- search space 820 includes CCE 821 addressed to UE 30 and search space 840 includes CCE 842 addressed to RF repeater 20 .
- the UE 30 can determine whether or not there is a CCE addressed to itself in the search space 820 and the RF repeater 20 in the search space 840, so the search load can be reduced.
- CCEs addressed to the RF repeater 20 can be transmitted without changing the existing resource mapping. Also, as compared with FIG. 8B, the division loss of the search space can be suppressed.
- a CCE addressed to RF repeater 20 can be transmitted such that it cannot be decoded without using RF repeater 20 or the RNTI of the group to which RF repeater 20 belongs.
- the DCI formats shown in FIGS. 6A-6C may not include destinations 602, 623, 643. FIG.
- RF repeater 20 may receive signals in an omni-pattern or a predetermined beam pattern when receiving signals from BS 10 .
- the RF repeater 20 performs beam selection processing between the BS 10 and the RF repeater 20 when connecting to the BS 10, and determines in advance the beam pattern to be used when the RF repeater 20 receives a signal from the BS 10.
- BS 10 measures based on the number of beam patterns available for transmission by BS 10, the number of beam patterns available for reception by RF repeater 20, and the number of beam patterns available for transmission by RF repeater 20. The number of time slots within the period may be determined.
- the BS 10 has been described as acquiring information about the number of beam patterns that can be formed from the RF repeater 20 .
- the wireless communication system 1 may predefine the number of beam patterns that the RF repeater 20 uses when relaying the signal to be measured, and in this case, the notification in S402 of FIG. 4 may be omitted. .
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Abstract
Description
前記基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定可能な情報をリピータ装置へ通知する通知手段と、
前記第1および第2の信号パターンの測定対象信号を同一のビームパターンで送信する送信手段と、
を備えることを特徴とする。
本実施形態に係る無線通信システムの構成例を図1に示す。無線通信システム1は、一例において5Gのセルラ通信システム(移動通信ネットワーク)である。ただし、これに限られず、本システムは、例えば5G以降の後継のセルラ通信システムであってもよいし、セルラ以外の無線通信システムであってもよい。無線通信システム1は、基地局装置(BS)10、無線周波数(RF)リピータ20、およびユーザ装置(UE)30を含んで構成される。なお、図1ではそれぞれ1つのBS 10、RFリピータ20,およびUE 30を示しているが、無線通信システム1は、BS 10、RFリピータ20、およびUE 30の少なくともいずれかを複数含んでもよい。
続いて、図2を参照して基地局装置(BS)10の構成について説明する。
続いて、図3を参照してRFリピータ20の構成について説明する。
続いて、BS 10が送信する同期信号(Primary Synchronization Signal(PSS)またはSecondary Synchronization Signal(SSS))や参照信号(CSI-RS)などの測定対象信号をUE 30が測定し、BS 10に測定結果をフィードバックするビーム選択処理について説明する。
続いて、BS 10がRFリピータ20のビームパターンを制御する方法について説明する。
RFリピータ20は、RFリピータ20宛のDCIがいつ送信されるか予測することができないため、周波数および時間の少なくともいずれかで規定されたサーチスペース内にRFリピータ20宛のDCIを検出しようとするブラインドデコーディングを行う。
発明は上記の実施形態に制限されるものではなく、発明の要旨の範囲内で、種々の変形・変更が可能である。
Claims (16)
- リピータ装置によって信号を中継されてユーザ装置と通信する基地局装置であって、
前記基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定可能な情報をリピータ装置へ通知する通知手段と、
前記第1および第2の信号パターンの測定対象信号を同一のビームパターンで送信する送信手段と、
を備える基地局装置。 - 前記複数の測定対象信号の信号パターンの数は、前記基地局装置が形成可能なビームパターンの数と前記リピータ装置が形成可能なビームパターンの数とに基づいて決定される請求項1に記載の基地局装置。
- 前記リピータ装置が形成可能なビームパターンの数を取得する取得手段をさらに有する請求項1または2に記載の基地局装置。
- 同一の信号パターンの測定対象信号は所定の長さのタイムスロット内で送信され、複数のタイムスロットは時間的に連続して設けられ、
前記通知手段は、前記複数のタイムスロットのうちの最初のタイムスロットの開始タイミングを通知する請求項1から3の何れか1項に記載の基地局装置。 - 前記タイムスロットの前記所定の長さはユーザ装置が形成可能なビームパターンの数に基づいて決定され、
前記通知手段は、前記所定の長さを特定可能な情報をさらに通知する請求項4に記載の基地局装置。 - 前記ユーザ装置から、前記複数の測定対象信号の測定結果を受信する受信手段をさらに備える請求項1から5の何れか1項に記載の基地局装置。
- 前記測定結果に基づいて前記リピータ装置が形成すべきビームパターンを指示する指示手段をさらに備える請求項6に記載の基地局装置。
- 基地局装置とユーザ装置との間の通信を中継するリピータ装置であって、
基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定する特定手段と、
前記第1および第2の信号パターンの測定対象信号を異なるビームパターンで中継する中継手段と、
を備えるリピータ装置。 - 前記リピータ装置が形成可能なビームパターンの数を前記基地局装置へ通知する通知手段をさらに備える請求項8に記載のリピータ装置。
- 基地局装置とユーザ装置との間の通信を中継するリピータ装置と、前記基地局装置とを含む無線通信システムであって、
前記基地局装置は、
前記基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定可能な情報をリピータ装置へ通知する通知手段と、
前記第1および第2の信号パターンの測定対象信号を同一のビームパターンで送信する送信手段と、
を備え、
前記リピータ装置は、
基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定する特定手段と、
前記第1および第2の信号パターンの測定対象信号を異なるビームパターンで中継する中継手段と、
を備える無線通信システム。 - リピータ装置によって信号を中継されてユーザ装置と通信する基地局装置の制御方法であって、
前記基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定可能な情報をリピータ装置へ通知することと、
前記第1および第2の信号パターンの測定対象信号を同一のビームパターンで送信することと、
を含む制御方法。 - 基地局装置とユーザ装置との間の通信を中継するリピータ装置の制御方法であって、
基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定することと、
前記第1および第2の信号パターンの測定対象信号を異なるビームパターンで中継することと、
を含む制御方法。 - 基地局装置とユーザ装置との間の通信を中継するリピータ装置と、前記基地局装置とを含む無線通信システムの制御方法であって、
前記基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定可能な情報を前記基地局装置がリピータ装置へ通知することと、
基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを前記リピータ装置が特定することと、
前記基地局装置が前記第1および第2の信号パターンの測定対象信号を同一のビームパターンで送信することと、
前記リピータ装置が前記第1および第2の信号パターンの測定対象信号を異なるビームパターンで中継することと、
を含む制御方法。 - リピータ装置によって信号を中継されてユーザ装置と通信する基地局装置のコンピュータに、
前記基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定可能な情報をリピータ装置へ通知する通知工程と、
前記第1および第2の信号パターンの測定対象信号を同一のビームパターンで送信する送信工程と、
を含む制御方法を実行させるプログラム。 - 基地局装置とユーザ装置との間の通信を中継するリピータ装置のコンピュータに、
基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定する特定工程と、
前記第1および第2の信号パターンの測定対象信号を異なるビームパターンで中継する中継工程と、
を含む制御方法を実行させるプログラム。 - 基地局装置とユーザ装置との間の通信を中継するリピータ装置と、前記基地局装置とを含む無線通信システムのコンピュータに、
前記基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを特定可能な情報を前記基地局装置がリピータ装置へ通知する通知工程と、
基地局装置が送信する複数の測定対象信号であって、第1の信号パターンと第2の信号パターンとを含む複数の信号パターンの測定対象信号を含む複数の測定対象信号の送信タイミングを前記リピータ装置が特定する特定工程と、
前記基地局装置が前記第1および第2の信号パターンの測定対象信号を同一のビームパターンで送信する送信工程と、
前記リピータ装置が前記第1および第2の信号パターンの測定対象信号を異なるビームパターンで中継する中継工程と、
を含む制御方法を実行させるプログラム。
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