WO2023062980A1 - 多数のアンテナによって構成されるcell-free massive MIMOシステムにおける送信電力制御のための制御装置、端末装置、制御方法、及びプログラム - Google Patents
多数のアンテナによって構成されるcell-free massive MIMOシステムにおける送信電力制御のための制御装置、端末装置、制御方法、及びプログラム Download PDFInfo
- Publication number
- WO2023062980A1 WO2023062980A1 PCT/JP2022/033558 JP2022033558W WO2023062980A1 WO 2023062980 A1 WO2023062980 A1 WO 2023062980A1 JP 2022033558 W JP2022033558 W JP 2022033558W WO 2023062980 A1 WO2023062980 A1 WO 2023062980A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- terminal device
- radio
- control
- transmission power
- information
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims description 9
- 238000004891 communication Methods 0.000 claims abstract description 45
- 238000005259 measurement Methods 0.000 description 13
- 238000012545 processing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
-
- 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
-
- 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
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/10—Open loop power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to transmission power control technology in a cell-free massive MIMO system composed of multiple antennas.
- a cell-free massive MIMO system in which a large number of antennas are arranged at high density and some of them are used to communicate with terminal devices is being studied.
- a virtual cell is configured for each terminal device by selecting an antenna to be used for each terminal device, and the terminal device generally exists in the center of the virtual cell. It will happen.
- a terminal device can obtain uniform communication quality regardless of its position.
- Non-Patent Document 1 describes such transmission power control.
- the terminal equipment autonomously determines the target transmission power based on the measurement result of the radio quality (for example, reference signal received power (RSRP)) of the radio signal transmitted from the base station equipment and transmits the signal. It includes open-loop control that performs power control and closed-loop control that performs transmission power control according to an instruction from the base station apparatus.
- RSRP reference signal received power
- transmission power control is performed based on the radio quality between the terminal device and any of the base station devices (cells) to which it is connected.
- cells to which terminal devices are explicitly connected are not defined, so conventional transmission power control cannot be applied as is.
- the present invention provides transmission power control technology in a cell-free massive MIMO system configured with multiple antennas.
- a control device is a control device in a wireless communication system that provides communication services to terminal devices via some of a large number of antennas, the control device comprising: Among them, a notifying means for notifying the terminal device of information that enables identification of a radio signal to be measured to be used when the terminal device performs transmission power control.
- a terminal device is a terminal device that receives communication service provision via a part of a large number of antennas, wherein the terminal device Receiving means for receiving information from a control device that enables identification of a radio signal to be measured that should be used when performing transmission power control, and radio quality of the radio signal to be measured that is identified based on the information and control means for measuring and controlling transmission power based on the radio quality.
- the present invention it is possible to appropriately control the transmission power of terminal devices in a cell-free massive MIMO system configured with a large number of antennas.
- FIG. 1 is a diagram illustrating a configuration example of a wireless communication system.
- FIG. 2 is a diagram showing a hardware configuration example of the device.
- FIG. 3 is a diagram illustrating an example of a functional configuration of a control device;
- FIG. 4 is a diagram illustrating a functional configuration example of a terminal device.
- FIG. 5 is a diagram illustrating an example of the flow of processing performed in a wireless communication system.
- FIG. 1 shows a configuration example of a wireless communication system according to this embodiment.
- a large number of antennas 111 to 112 are arranged in a geographically wide area with high density, and these antennas 111 to 112 are respectively connected to base station devices and the like. It is connected to the control devices 101 and 102 using, for example, optical fibers.
- the antennas 111 and 112 are referred to, but in addition to the antennas, they may be transmission/reception devices having communication functions capable of executing each process of the physical layer and upper layers. Note that one transmitting/receiving device may include only one antenna, or may include a plurality of antennas.
- the control devices 101 and 102 are connected to the terminal device 121 via at least one antenna for communication.
- the terminal device 121 In FIG. 1, only a few control devices 101 to 102 and terminal devices 121 are shown for the sake of simplicity of explanation, but naturally more of these devices than shown in FIG. 1 can exist.
- the terminal device 121 communicates by connecting with at least one of the control devices 101 to 102 via some of the antennas 111 to 112 that are present in the vicinity.
- the control devices 101 and 102 communicate with the terminal device 121 using at least part of the antennas connected to the control devices 101 and 121 when the connection with the terminal device 121 is established.
- one or more of the control devices 101 to 102 form a virtual area centered on the terminal device 121, and provide high-quality and highly stable communication services regardless of the location of the terminal device 121. can be provided.
- some of the many antennas forming the virtual area here are sometimes called user-centric clusters, and are simply called “clusters" in this embodiment.
- the cluster when the terminal device 121 starts communication, the cluster is connected to the antenna with the best radio quality, and in a situation where the terminal device 121 should communicate, the terminal device 121 performs communication in a resource block that can be used.
- the antenna is a transmitting/receiving device having an upper layer control function, for example, the control devices 101 and 102 inquire of each transmitting/receiving device about the resource usage status, and use the resource to be used.
- a transmitting/receiving device that does not have a terminal device 121 may be selected as a transmitting/receiving device that provides communication services to the terminal device 121 .
- the configuration of the cluster is not limited to this, and antennas to be used can be selected by an algorithm appropriately selected by the network operator.
- the terminal device 121 determines transmission power when transmitting signals based on the downlink transmitted from the antennas 111-112.
- this embodiment provides a procedure for the terminal device 121 to perform transmission power control in the system shown in FIG.
- the terminal device 121 measures the radio quality of the radio signals from some of the antennas forming the cluster, and measures the radio quality of the radio signals to be measured. Execute control.
- the radio quality is, for example, reference signal received power (RSRP), but is not limited thereto, and may be any radio quality that can identify propagation loss, such as signal-to-noise ratio (SNR).
- RSRP reference signal received power
- SNR signal-to-noise ratio
- the terminal device 121 obtains the received power of a plurality of radio signals to be measured, the total received power, the average received power, the minimum received power, the maximum received power, or the center of the received power distribution The value can be used as an index to perform transmit power control.
- the median value of the received power distribution may be a predetermined percentile value of the received power (for example, the 10th percentile value, the 90th percentile value, etc.).
- the terminal device 121 can identify the total amount of propagation loss between the antennas forming the cluster based on the total received power of the wireless signal to be measured, and performs transmission power control to compensate for the propagation loss. can be executed.
- the terminal device 121 for example, the average received power of the radio signal to be measured, the minimum received power, the maximum received power, or the propagation loss corresponding to the median value of the received power distribution as a reference, between one antenna
- the transmission power may be determined, and the transmission power may be multiplied by a constant corresponding to the number of antennas to determine the total transmission power.
- control devices 101 and 102 can specify the wireless signal to be measured to be used when the terminal device 121 performs transmission power control via an antenna capable of communicating with the terminal device 121.
- the terminal device 121 can be notified of information to be performed.
- the radio signal is configured to be able to identify from which of a large number of antennas it was sent, and the control devices 101 and 102 notify the terminal device 121 of information identifying some of the antennas that provide communication services. sell.
- the reference signals transmitted by each antenna are transmitted using mutually orthogonal resources such as frequency, time, and code, and the terminal device 121 is notified of the resources used to transmit the reference signals to be measured.
- the radio signal transmitted from each antenna may include information that can identify the antenna that is the transmission source. Based on the notified information, the terminal device 121 can measure the radio quality of radio signals transmitted from some antennas that provide communication services to the terminal device 121, and execute transmission power control.
- the terminal device 121 may identify the RSRP based on the reference signal transmitted from each antenna, identify the propagation loss based on the RSRP, and perform transmission power control.
- the terminal device 121 may perform transmission power control using the index as described above.
- the control devices 101 and 102 may, for example, notify the terminal device 121 of information specifying which of the above indicators should be used.
- the control devices 101 and 102 collect propagation path estimation errors (estimation errors of propagation loss) for each antenna based on the actual communication performance, store the statistical values, and send the information to the terminal device 121. You may make it notify the information of a statistical value.
- the propagation path estimation errors may be collected for each area where the terminal device 121 exists or for the entire area where the antennas under the control of the control device are arranged, and the statistical values may be held.
- the terminal device 121 acquires this information, the terminal device 121 can use the channel estimation error as an offset value to perform transmission power control. For example, the power obtained by adding the offset value to the transmission power value corresponding to the estimated value of the propagation loss may be determined as the transmission power to be actually used.
- the control devices 101 and 102 transmit the radio signal with the minimum received power or the maximum transmitted power. You may further notify information about. According to this, for example, as a result of receiving a radio signal from an antenna at a position distant from the terminal apparatus 121, the terminal apparatus 121 has the minimum received power, or the terminal apparatus 121 instantaneously reaches the minimum received power due to, for example, a shield. You can identify what happened.
- the terminal device 121 can perform transmission power control more appropriately by, for example, acquiring setting information at the time of transmission of the radio signal in the antenna that is the transmission source of the radio signal with the maximum received power or the minimum received power. can be done. It should be noted that, even when another indicator is used, the terminal device 121 may be notified of information that enables identification of what kind of radio signal was transmitted from which antenna.
- the control devices 101 and 102 may notify the terminal device 121 of the number of antennas forming a cluster that provides communication services to the terminal device 121, for example.
- the terminal device 121 can, for example, measure the radio quality of the specified number of radio signals among the received radio signals, and execute transmission power control based on the radio quality.
- the terminal device 121 can perform transmission power control, for example, based on the radio quality of the number of radio signals notified from the one with the better radio quality. According to this, the terminal device 121 measures radio signals in excess of the number of antennas belonging to a cluster that provides communication services to the terminal device 121, thereby detecting radio signals from antennas not belonging to the cluster. can reduce the probability of considering
- the control devices 101 and 102 can notify the terminal device 121 of information on the reference value of radio quality. Then, the terminal device 121 can perform transmission power control based on the radio quality of radio signals that can obtain radio quality exceeding the reference value. It is assumed that radio signals from antennas belonging to a cluster that provides communication services to the terminal device 121 have sufficiently good radio quality. Therefore, by designating the radio quality reference value, the probability that the terminal device 121 can selectively use the radio quality of the radio signals from the antennas belonging to the cluster to execute transmission power control is improved. be able to. It should be noted that the information about the radio quality reference value may be specified as a reference value relative to any of the measured radio qualities, eg a 20 dB range from the best radio quality value.
- the terminal device 121 specifies the RSRP based on the radio signal determined to be used for transmission power control as described above. Transmit power control may be performed by identifying propagation loss based on RSRP. Also, the terminal device 121 may perform transmission power control using the index as described above. At this time, the control devices 101 and 102 may, for example, notify the terminal device 121 of information specifying which of the above indicators should be used.
- the control devices 101-102 described above may be provided in each of the antennas 111-112.
- the antennas 111 to 112 are transmission/reception devices capable of executing communication processing of the physical layer and the upper layer
- the processing described above may be executed by the control devices 101 to 102 in the transmission/reception device.
- the control devices 101-102 may be included in the transmitting/receiving devices corresponding to the antennas 111-112, respectively, and arranged in a distributed manner.
- each transmitting/receiving apparatus can exchange information with each other and transmit/receive information for selecting transmitting/receiving apparatuses forming a cluster.
- the terminal device 121 receives data from one of the transmitting/receiving devices forming the cluster corresponding to the terminal device 121, for example, from the transmitting/receiving device to which the terminal device 121 was first connected before forming the cluster of the terminal device 121. , can be notified of the above information.
- FIG. 2 shows a hardware configuration example of the control devices 101 and 102 and the terminal device 121.
- the control devices 101-102 and the terminal device 121 have a processor 201, a ROM 202, a RAM 203, a storage device 204, and a communication circuit 205 in one example.
- the processor 201 executes a computer-readable program for realizing each function of each device as described above, which is recorded in, for example, one of the ROM 202, the RAM 203, and the storage device 204. be.
- processor 201 may be replaced by one or more processors such as ASICs (Application Specific Integrated Circuits), FPGAs (Field Programmable Gate Arrays), DSPs (Digital Signal Processors), and the like.
- ASICs Application Specific Integrated Circuits
- FPGAs Field Programmable Gate Arrays
- DSPs Digital Signal Processors
- FIG. 2 shows a schematic diagram of the control device having one communication circuit 205, but the present invention is not limited to this.
- Fig. 3 shows an example of the functional configuration of the control devices 101-102.
- the functions shown in FIG. 3 are realized, for example, by processors 201 of control devices 101 and 102 executing programs stored in ROM 202, RAM 203, and storage device 204.
- FIG. Note that the control devices 101 and 102 may have hardware corresponding to at least one of the functions described later. 3 selectively shows functional units particularly related to the present embodiment among functions of the control devices 101 to 102.
- the control devices 101 to 102 form a user-centric cluster. It naturally has a function for communicating with the terminal device 121 .
- the control devices 101 and 102 have a measurement object information notification section 301 as its function. Also, the control devices 101 and 102 may have an index information notification unit 302 as an option.
- the measurement target information notification unit 301 transmits information that enables the terminal device 121 to specify the measurement target wireless signal to be used when the terminal device 121 performs transmission power control from among the wireless signals transmitted from each of a large number of antennas. 121.
- the information is used for some antennas used when providing communication services to the terminal device 121. may include information identifying the
- the reference signals transmitted from each antenna are transmitted using radio resources such as orthogonal frequencies, times, codes, etc., and the information may include information designating the radio resources.
- a separate identifier can be given to each antenna, and the identifier can be included in the radio signal and transmitted.
- the information can be information indicating the number of antennas used when providing communication services to the terminal device 121 .
- the information may also include information on the reference value of radio quality.
- the indicator information notification unit 302 notifies the terminal device 121 of information indicating an indicator related to the radio quality of the radio signal to be measured, which the terminal device 121 should use as a reference for transmission power control.
- the index can include the total received power, average received power, minimum received power, maximum received power, or median value of received power distribution of the wireless signal to be measured.
- FIG. 4 shows an example of the functional configuration of the terminal device 121.
- the functions shown in FIG. 4 are implemented by the processor 201 of the terminal device 121 executing programs stored in the ROM 202, the RAM 203, and the storage device 204, for example.
- the terminal device 121 may have hardware corresponding to at least one of the functions described later. 4 selectively shows functional units particularly related to the present embodiment among the functions of the terminal device 121, and the terminal device 121 naturally has functions as a general terminal device.
- the terminal device 121 has a measurement target information receiving section 401 and a transmission power control section 402 as its functions. Also, the terminal device 121 may have an index information receiving section 403 as an option.
- the measurement target information receiving unit 401 enables the terminal device 121 to specify the measurement target wireless signal to be used when the terminal device 121 performs transmission power control, which is transmitted from the control devices 101 to 102 by the measurement target information notification unit 301. receive information; For example, when the measurement target information receiving unit 401 receives information specifying some of the antennas used when providing communication services to the terminal device 121, the transmission power control unit 402 transmits from some of the antennas. The radio quality of the received radio signal is measured, the propagation loss is estimated, the transmission power is determined so as to compensate for the propagation loss, and the amplifier and the like are controlled.
- transmission power control section 402 can estimate the radio quality of the radio signal without specifying from which antenna the signal was transmitted, and execute transmission power control. For example, when the measurement target information receiving unit 401 receives information indicating the number of antennas used when providing a communication service to the terminal device 121, the transmission power control unit 402 detects that the radio quality of the measured radio signal is Transmission power control may be performed based on the number of radio qualities specified in the information from the highest. Further, when measurement target information receiving section 401 receives information about a reference value of radio quality, transmission power control section 402 can perform transmission power control based on radio quality exceeding the reference value.
- the reference value may be, for example, information that can identify a second value obtained by subtracting the reference value from the first value of the best radio quality. may perform transmit power control based on radio quality exceeding .
- the indicator information receiving section 403 receives from the control devices 101 to 102 by the indicator information notifying section 302 information indicating the indicator relating to the radio quality of the radio signal to be measured, which the terminal device 121 should use as a reference for transmission power control.
- the index can include the total received power, average received power, minimum received power, maximum received power, or median value of received power distribution of the wireless signal to be measured.
- a radio signal to be measured to be used when the terminal device 121 performs transmission power control is notified (S501).
- the terminal device 121 is to be used as a reference for transmission power control radio quality index of the radio signal to be measured can be notified to the terminal device 121 (S502).
- the antenna and control device used for information notification in S501 and the antenna and control device used for information notification in S502 may be different or the same.
- a radio signal such as a reference signal is transmitted from each antenna (S503), and the terminal device 121 identifies a measurement target from among the incoming radio signals based on the information acquired in S501 (S504), The wireless quality of the measurement target is measured (S505). Then, the terminal device 121 controls transmission power based on the radio quality measured in S505 and, for example, the index information acquired in S502 (S506). Thereby, the transmission power is set so that the propagation loss is compensated and the received power at each antenna becomes the target power.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
図1に、本実施形態の無線通信システムの構成例を示す。図1に示すように、本実施形態に係る無線通信システムは、多数のアンテナ111~112が地理的に広範囲に高密度に配置され、それらのアンテナ111~112が、それぞれ、基地局装置等の制御装置101~102に、例えば光ファイバ等を用いて接続される。なお、本実施形態では、アンテナ111~112と呼ぶが、アンテナに加えて、物理レイヤや上位レイヤの各処理を実行可能な通信機能を有する送受信装置でありうる。なお、1つの送受信装置が、1つのアンテナのみを含んでもよいし、複数のアンテナを含んでもよい。制御装置101~102は、少なくとも1つのアンテナを介して端末装置121と接続して通信を行う。なお、図1では、説明を簡単にするために少数の制御装置101~102及び端末装置121のみを示しているが、これらの装置は図1に示すより当然に多く存在しうる。
続いて、上述の制御装置101~102と端末装置121の構成について説明する。図2に、制御装置101~102及び端末装置121のハードウェア構成例を示す。制御装置101~102及び端末装置121は、一例において、プロセッサ201、ROM202、RAM203、記憶装置204、及び通信回路205を有する。制御装置101~102及び端末装置121では、例えばROM202、RAM203及び記憶装置204のいずれかに記録された、上述のような各装置の各機能を実現するコンピュータが可読のプログラムがプロセッサ201により実行される。なお、プロセッサ201は、ASIC(特定用途向け集積回路)、FPGA(フィールドプログラマブルゲートアレイ)、DSP(デジタルシグナルプロセッサ)等の1つ以上のプロセッサによって置き換えられてもよい。制御装置101~102及び端末装置121は、例えばプロセッサ201により通信回路205を制御して、他の装置との間の通信を行う。なお、図2では、制御装置は、1つの通信回路205を有するような概略図を示しているが、これに限られない。
図5を用いて、無線通信システムで実行される処理の流れの例について説明する。なお、処理の詳細については上述の通りであるため、ここでは、処理の流れを概説するにとどめる。
Claims (16)
- 多数のアンテナの一部を介して端末装置に通信サービスを提供する無線通信システムにおける制御装置であって、前記多数のアンテナのそれぞれから送信された無線信号の中から、前記端末装置が送信電力制御を行う際に用いるべき測定対象の無線信号を特定可能とする情報を前記端末装置へ通知する通知手段を有する制御装置。
- 前記無線信号は、前記多数のアンテナのいずれから送出されたかを特定可能に構成され、
前記情報は、前記端末装置に通信サービスを提供する際に用いられる前記多数のアンテナの前記一部を特定する情報を含む、請求項1に記載の制御装置。 - 前記情報は、前記端末装置に通信サービスを提供する際に用いられる前記多数のアンテナの前記一部の数を示す情報を含む、請求項1に記載の制御装置。
- 前記情報は、無線品質の基準値に関する情報を含み、
前記端末装置は、前記多数のアンテナから送信された無線信号のうち、前記基準値を超える無線品質を得られる無線信号を、前記測定対象の無線信号とする、請求項1に記載の制御装置。 - 前記通知手段は、前記端末装置が前記送信電力制御の基準として用いるべき前記測定対象の無線信号の無線品質に関する指標を示す情報をさらに前記端末装置へ通知する、請求項1から4のいずれか1項に記載の制御装置。
- 前記指標は、前記測定対象の無線信号の総受信電力、平均受信電力、最小受信電力、最大受信電力、又は、受信電力の分布の中央値を含む、請求項5に記載の制御装置。
- 多数のアンテナの一部を介して通信サービスの提供を受ける端末装置であって、
前記多数のアンテナのそれぞれから送信された無線信号の中から、前記端末装置が送信電力制御を行う際に用いられるべき測定対象の無線信号を特定可能とする情報を制御装置から受信する受信手段と、
前記情報に基づいて特定された前記測定対象の無線信号の無線品質を測定して、当該無線品質に基づいて送信電力を制御する制御手段と、
を有する端末装置。 - 前記無線信号は、前記多数のアンテナのいずれから送出されたかを特定可能に構成され、
前記情報は、前記端末装置に通信サービスを提供する際に用いられる前記多数のアンテナの前記一部を特定する情報を含み、
前記制御手段は、前記情報によって示された前記多数のアンテナの前記一部から送信された前記無線信号の無線品質を測定して、当該無線品質に基づいて送信電力を制御する、請求項7に記載の端末装置。 - 前記情報は、前記端末装置に通信サービスを提供する際に用いられる前記多数のアンテナの前記一部の数を示す情報を含み、
前記制御手段は、前記情報によって示される前記数の前記無線信号の無線品質を測定して、当該無線品質に基づいて送信電力を制御する、請求項7に記載の端末装置。 - 前記情報は、無線品質の基準値に関する情報を含み、
前記制御手段は、前記多数のアンテナから送信された無線信号のうち、前記基準値を超える無線品質を得られる無線信号の当該無線品質に基づいて送信電力を制御する、請求項7に記載の端末装置。 - 前記受信手段は、前記端末装置が前記送信電力制御の基準として用いるべき前記測定対象の無線信号の無線品質に関する指標を示す情報をさらに前記制御装置から受信し、
前記制御手段は、前記情報に基づいて特定された前記測定対象の無線信号の無線品質と当該指標とに基づいて送信電力を制御する、請求項7から10のいずれか1項に記載の端末装置。 - 前記指標は、前記測定対象の無線信号の総受信電力、平均受信電力、最小受信電力、最大受信電力、又は、受信電力の分布の中央値を含む、請求項11に記載の端末装置。
- 多数のアンテナの一部を介して端末装置に通信サービスを提供する無線通信システムにおける制御装置によって実行される制御方法であって、前記多数のアンテナのそれぞれから送信された無線信号の中から、前記端末装置が送信電力制御を行う際に用いるべき測定対象の無線信号を特定可能とする情報を前記端末装置へ通知することを含む制御方法。
- 多数のアンテナの一部を介して通信サービスの提供を受ける端末装置によって実行される制御方法であって、
前記多数のアンテナのそれぞれから送信された無線信号の中から、前記端末装置が送信電力制御を行う際に用いるべき測定対象の無線信号を特定可能とする情報を制御装置から受信することと、
前記情報に基づいて特定された前記測定対象の無線信号の無線品質を測定して、当該無線品質に基づいて送信電力を制御することと、
を含む制御方法。 - 多数のアンテナの一部を介して端末装置に通信サービスを提供する無線通信システムにおける制御装置に備えられたコンピュータに、前記多数のアンテナのそれぞれから送信された無線信号の中から、前記端末装置が送信電力制御を行う際に用いるべき測定対象の無線信号を特定可能とする情報を前記端末装置へ通知させるためのプログラム。
- 多数のアンテナの一部を介して通信サービスの提供を受ける端末装置に備えられたコンピュータに、
前記多数のアンテナのそれぞれから送信された無線信号の中から、前記端末装置が送信電力制御を行う際に用いるべき測定対象の無線信号を特定可能とする情報を制御装置から受信させ、
前記情報に基づいて特定された前記測定対象の無線信号の無線品質を測定して、当該無線品質に基づいて送信電力を制御させる、
ためのプログラム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202280060986.4A CN117917136A (zh) | 2021-10-15 | 2022-09-07 | 用于由多个天线构成的cell-free massive MIMO系统中的发送功率控制的控制装置、终端装置、控制方法以及程序 |
US18/600,940 US20240214944A1 (en) | 2021-10-15 | 2024-03-11 | Control device for transmission power control in cell-free massive mimo system composed of many antennas, terminal device, control method, and computer-readable storage medium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-169832 | 2021-10-15 | ||
JP2021169832A JP2023059689A (ja) | 2021-10-15 | 2021-10-15 | 多数のアンテナによって構成されるcell-free massive MIMOシステムにおける送信電力制御のための制御装置、端末装置、制御方法、及びプログラム |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/600,940 Continuation US20240214944A1 (en) | 2021-10-15 | 2024-03-11 | Control device for transmission power control in cell-free massive mimo system composed of many antennas, terminal device, control method, and computer-readable storage medium |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023062980A1 true WO2023062980A1 (ja) | 2023-04-20 |
Family
ID=85987431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2022/033558 WO2023062980A1 (ja) | 2021-10-15 | 2022-09-07 | 多数のアンテナによって構成されるcell-free massive MIMOシステムにおける送信電力制御のための制御装置、端末装置、制御方法、及びプログラム |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240214944A1 (ja) |
JP (1) | JP2023059689A (ja) |
CN (1) | CN117917136A (ja) |
WO (1) | WO2023062980A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190356361A1 (en) * | 2016-01-27 | 2019-11-21 | RF DSP Inc. | Cellular wireless communication systems enhanced by intelligent self-organizing wireless distributed active antennas |
JP2021169832A (ja) | 2020-04-14 | 2021-10-28 | 株式会社エーゾーン | 板材の結合構造並びにこれを用いた組立体 |
-
2021
- 2021-10-15 JP JP2021169832A patent/JP2023059689A/ja active Pending
-
2022
- 2022-09-07 WO PCT/JP2022/033558 patent/WO2023062980A1/ja active Application Filing
- 2022-09-07 CN CN202280060986.4A patent/CN117917136A/zh active Pending
-
2024
- 2024-03-11 US US18/600,940 patent/US20240214944A1/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20190356361A1 (en) * | 2016-01-27 | 2019-11-21 | RF DSP Inc. | Cellular wireless communication systems enhanced by intelligent self-organizing wireless distributed active antennas |
JP2021169832A (ja) | 2020-04-14 | 2021-10-28 | 株式会社エーゾーン | 板材の結合構造並びにこれを用いた組立体 |
Non-Patent Citations (2)
Title |
---|
3GPP TS38.213, V16.4.0, December 2020 (2020-12-01) |
ETRI: "Study on Further enhancement of multi-TRP transmission for NR", 3GPP DRAFT; RP-212052, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. TSG RAN, no. Electronic Meeting; 20210913 - 20210917, 6 September 2021 (2021-09-06), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052049342 * |
Also Published As
Publication number | Publication date |
---|---|
US20240214944A1 (en) | 2024-06-27 |
CN117917136A (zh) | 2024-04-19 |
JP2023059689A (ja) | 2023-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7321707B2 (ja) | 方法、システムおよび装置 | |
JP5880990B2 (ja) | セル測定方法、セルリソース共有方法、および関連デバイス | |
CN110035441B (zh) | 确定波束的方法及通信装置 | |
RU2579940C2 (ru) | Способы и устройство для поддержки межчастотных измерений | |
US10952236B2 (en) | Beam selection systems and methods | |
KR102617035B1 (ko) | 빔 정보를 이용하여 위치결정하기 위한 방법 및 디바이스 | |
US11290172B2 (en) | Non-coherent cooperative multiple-input multiple-output communications | |
WO2020101757A1 (en) | Method and apparatus for determining dynamic beam correspondence for phased array antenna | |
CN109151883B (zh) | 通信方法、装置及存储介质 | |
KR20190107713A (ko) | 대규모 채널 파라미터의 지시, 확정 방법, 기지국 및 단말기 | |
CN114938712A (zh) | 波束选择方法和装置 | |
US20210341562A1 (en) | Beam based positioning measurements and measurement reporting | |
US20230189038A1 (en) | Acquisition and reporting of channel measurements and interference measurements | |
JP2024012672A (ja) | 通信装置、及び通信制御装置 | |
CN114223170A (zh) | 按需定位的方法和设备 | |
JP7488359B2 (ja) | 測位のための条件付き測定報告モード | |
KR20130087972A (ko) | 협력형 다중 셀 통신시스템에서 rrm측정 방법 및 그 송수신 포인트, 그 단말 | |
WO2023062980A1 (ja) | 多数のアンテナによって構成されるcell-free massive MIMOシステムにおける送信電力制御のための制御装置、端末装置、制御方法、及びプログラム | |
JP2022544417A (ja) | 無線通信ネットワークにおけるデータストリームの分離能力の検討 | |
WO2018059582A1 (zh) | 一种无线通信系统中实现用户面功能增强的方法和装置 | |
WO2018176328A1 (zh) | 一种用户设备、基站中的被用于多天线传输的方法和装置 | |
RU2788396C1 (ru) | Способ и устройство индикации произвольного доступа и носитель данных | |
US20240063906A1 (en) | Wireless communication system, base station control device, evacuation guidance method, and base station control program | |
US20220248419A1 (en) | Interference handling at radio access network nodes | |
CN117981377A (zh) | 提高由多个天线构成的cell-free massive MIMO系统的通信效率的控制装置及其控制方法、处理装置及其处理方法以及程序 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22880676 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202280060986.4 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2022880676 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2022880676 Country of ref document: EP Effective date: 20240515 |