WO2026034219A1 - Dispositif de commande, dispositif ru, dispositif du, procédé et programme - Google Patents

Dispositif de commande, dispositif ru, dispositif du, procédé et programme

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Publication number
WO2026034219A1
WO2026034219A1 PCT/JP2025/026287 JP2025026287W WO2026034219A1 WO 2026034219 A1 WO2026034219 A1 WO 2026034219A1 JP 2025026287 W JP2025026287 W JP 2025026287W WO 2026034219 A1 WO2026034219 A1 WO 2026034219A1
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WO
WIPO (PCT)
Prior art keywords
value
unit
upper limit
designated
message
Prior art date
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Pending
Application number
PCT/JP2025/026287
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English (en)
Japanese (ja)
Inventor
徹彦 宮谷
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NEC Corp
Original Assignee
NEC Corp
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Publication date
Application filed by NEC Corp filed Critical NEC Corp
Publication of WO2026034219A1 publication Critical patent/WO2026034219A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • 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
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • 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
    • H04W72/0457—Variable allocation of band or rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • This disclosure relates to a control device, an RU device, a DU device, a method, and a program.
  • O-RAN Open-Radio Access Network
  • O-DU O-RAN Distributed Unit
  • One of the goals of the O-RAN fronthaul specifications is to facilitate the connection of O-RUs from vendors different from those of O-DUs, thereby realizing multi-vendor radio access networks.
  • O-DUs can also be simply referred to as DU devices.
  • O-RUs can also be simply referred to as RU devices.
  • the maximum available bandwidth is determined by law or recommendation. Transmission power is also determined by law or specification. Wireless communication systems are designed to use maximum power when the maximum bandwidth is in use.
  • the inventor has discovered that, for example, during certain time periods, wireless resource usage is significantly low, making it possible to communicate at a bandwidth narrower than the maximum bandwidth.
  • the inventor has also discovered that if communication can be performed at a narrower bandwidth, it is possible to reduce the power consumption of wireless base stations.
  • the inventor has discovered that currently, there is no specified upper limit on the bandwidth that is common to the DU and RU devices and that can be used by the system, and furthermore, there is no way for the DU and RU devices to know this common upper limit on the bandwidth, so it is possible that unified power consumption reductions by the DU and RU devices have not been achieved.
  • the objective of the present disclosure is to provide a control device, an RU device, a DU device, a method, and a program that can achieve unified power consumption reduction by a DU device and an RU device. It should be noted that this objective is merely one of multiple objectives that the multiple embodiments disclosed in this specification aim to achieve. Other objectives or problems and novel features will become apparent from the description of this specification or the accompanying drawings.
  • the control device includes a formation unit that forms a designation message including information regarding a designated value for the upper limit of transmission resources actually used in the system, and a designation unit that transmits the designation message to at least one of a DU (Distributed Unit) device or an RU (Radio Unit) device.
  • a DU Distributed Unit
  • RU Radio Unit
  • the RU (Radio Unit) device disclosed herein comprises a radio unit including a peak power reduction unit that reduces the peak power of a transmitted radio signal based on a set threshold and a power amplifier that amplifies the transmitted radio signal; an acquisition unit that acquires a specification message that is a specified value for the upper limit of transmission resources actually used in the system and includes information related to a specified value that is common to the DU (Distributed Unit) device; and a control unit that sets the threshold based on the specified value and controls the amplification characteristics of the power amplifier based on the specified value.
  • a radio unit including a peak power reduction unit that reduces the peak power of a transmitted radio signal based on a set threshold and a power amplifier that amplifies the transmitted radio signal; an acquisition unit that acquires a specification message that is a specified value for the upper limit of transmission resources actually used in the system and includes information related to a specified value that is common to the DU (Distributed Unit) device; and a control unit that sets the threshold based on the
  • the DU (Distributed Unit) device comprises an acquisition unit that acquires a specification message that contains information about a specified value that is a specified upper limit value of transmission resources actually used in the system and is common to the RU (Radio Unit) device, and a control unit that controls the number of frequency resources used in the system based on the specified value.
  • the control method disclosed herein is a method executed by a control device, and includes forming a specification message including information regarding a specified value for the upper limit of transmission resources actually used in the system, and transmitting the specification message to at least one of a DU (Distributed Unit) device or an RU (Radio Unit) device.
  • a DU Distributed Unit
  • RU Radio Unit
  • the program disclosed herein causes a control device to perform processing including forming a specification message containing information regarding a specified value for the upper limit of transmission resources actually used in the system, and transmitting the specification message to at least one of a DU (Distributed Unit) device or an RU (Radio Unit) device.
  • a DU Distributed Unit
  • RU Radio Unit
  • This disclosure makes it possible to provide a control device, RU device, DU device, method, and program that can achieve unified power consumption reduction by DU devices and RU devices.
  • FIG. 1 illustrates an example of a communication system according to the present disclosure.
  • FIG. 2 is a block diagram illustrating an example of a control device according to the present disclosure.
  • FIG. 2 is a block diagram illustrating an example of a DU device according to the present disclosure.
  • FIG. 1 is a block diagram illustrating an example of an RU device of the present disclosure.
  • FIG. 10 is a diagram illustrating a comparative example.
  • FIG. 10 is a diagram illustrating a comparative example.
  • FIG. 10 is a diagram illustrating a comparative example.
  • FIG. 10 is a diagram illustrating a comparative example.
  • FIG. 10 is a block diagram illustrating another example of the control device of the present disclosure.
  • FIG. 10 is a block diagram showing another example of a DU device of the present disclosure.
  • FIG. 10 is a block diagram showing another example of a DU device of the present disclosure.
  • FIG. 10 is a diagram showing an example of a designation message as a C-Plane message.
  • FIG. 2 is a diagram illustrating an example of the configuration of a control device.
  • FIG. 1 is a diagram illustrating an example of the configuration of a DU device.
  • Fig. 1 is a diagram illustrating an example of a communication system according to the present disclosure.
  • the communication system 1 includes a control device 10, a distributed unit (DU) device 20, and a radio unit (RU) device 30.
  • the communication system 1 may also include a central unit (CU) device (not shown).
  • a wireless terminal (not shown) located within the service area of the RU device 30 is wirelessly connected to the RU device 30.
  • control device 10 is shown as an independent device in FIG. 1, the present disclosure is not limited to this.
  • the control device 10 may, for example, be included in the above-mentioned CU device, or may be included in a RIC (RAN Intelligent Controller) not shown, or may be included in the DU device 20.
  • RIC RAN Intelligent Controller
  • the designation unit 12 transmits the designation message formed by the formation unit 11 to at least one of the DU device 20 or the RU device 30.
  • the designation unit 12 may send a designation message to each of the DU device 20 and the RU device 30.
  • the designation unit 12 may send a designation message to the DU device 20 and also to the RU device 30 via the DU device 20.
  • the designation unit 12 may send a designation message to the RU device 30. In this case, the designation unit 12 sends the designation message to the acquisition unit 21, described below, within the DU device 20.
  • Example of DU device configuration> 3 is a block diagram showing an example of a DU device according to the present disclosure.
  • the DU device 20 includes an acquisition unit 21 and a control unit 22.
  • the acquisition unit 21 acquires the above-mentioned specification message.
  • the specification message contains information regarding the specified value for the transmission resource upper limit value, which is also common to the RU device 30.
  • the control unit 22 controls the number of frequency resources used in the communication system 1 based on the specified value. For example, the control unit 22 may maintain a correspondence relationship that associates multiple candidate values for the transmission resource upper limit value with the number of frequency resources corresponding to each candidate value. In this correspondence relationship, the smaller the candidate value among the multiple candidate values, the smaller the number of frequency resources that is associated with it. The control unit 22 then identifies the number of frequency resources associated with the candidate value that matches the specified value included in the specification message in the correspondence relationship. The control unit 22 may then limit the number of frequency resources used in the communication system 1 to the identified number of frequency resources.
  • Example of RU device configuration> 4 is a block diagram showing an example of an RU device according to the present disclosure.
  • an RU device 30 includes an acquisition unit 31, a control unit 32, and a radio unit 35.
  • the radio unit 35 performs predetermined radio transmission processing on the transmission signal to form a radio signal, and then transmits the radio signal.
  • the transmission signal is a multi-carrier modulated signal (for example, an OFDM (Orthogonal Frequency Division Multiplexing) signal).
  • the radio unit 35 includes a peak power reduction unit 36 and a power amplifier 37.
  • the peak power reduction unit 36 reduces the peak power of the transmitted radio signal based on a set threshold. It is known that multi-carrier modulated signals tend to have a high PAPR (Peak to Average Power Ratio).
  • the peak power reduction unit 36 uses CFR (Crest Factor Reduction) such as clipping to limit the power of the multi-carrier modulated signal to below the set threshold.
  • the power amplifier 37 amplifies the input transmission radio signal according to the amplification characteristics of the power amplifier 37.
  • the acquisition unit 31 acquires the above-mentioned designated message.
  • the designated message is a designated value for the transmission resource upper limit value and includes information regarding the designated value that is common to the RU device 30.
  • the acquisition unit 31 may, for example, acquire the designated message without going through the DU device 20, or may acquire the designated message via the DU device 20.
  • the control unit 32 sets the threshold value of the peak power reduction unit 36 based on the specified value indicated by the information included in the specification message. For example, the control unit 32 may store a correspondence relationship that associates multiple candidate values for the transmission resource upper limit with threshold values corresponding to each candidate value. In this correspondence relationship, the smaller the candidate value among the multiple candidate values, the smaller the threshold value that is associated with it. The control unit 32 then identifies the threshold value associated with the candidate value that matches the specified value included in the specification message in the correspondence relationship. The control unit 32 then sets the identified threshold value in the peak power reduction unit 36.
  • the control unit 32 also controls the amplification characteristics of the power amplifier 37 based on the specified value indicated by the information included in the specification message. For example, the control unit 32 controls the amplification characteristics of the power amplifier 37 by controlling the drain current of the power amplifier 37. Specifically, the control unit 32 controls the drain current of the power amplifier 37 by controlling the gate voltage of the power amplifier 37. For example, the control unit 32 may maintain a correspondence relationship that associates multiple candidate values for the transmission resource upper limit with gate voltage values corresponding to each candidate value. In this correspondence relationship, the smaller the candidate value among the multiple candidate values, the smaller the gate voltage value. The control unit 32 then identifies the gate voltage associated with the candidate value that matches the specified value included in the specification message in the correspondence relationship.
  • the control unit 32 then controls the gate voltage of the power amplifier 37 to the identified gate voltage value.
  • the control unit 32 may also control the drain current of the power amplifier 37 by controlling a drain current supply circuit (not shown) to the power amplifier 37.
  • the control unit 32 may control the bias of the power amplifier 37 based on the specified value indicated by the information included in the specification message. For example, the control unit 32 may maintain a correspondence relationship that associates multiple candidate values for the transmission resource upper limit with a bias value corresponding to each candidate value. In this correspondence relationship, the smaller the candidate value among the multiple candidate values, the smaller the bias value that is associated with it. The control unit 32 then identifies the bias value associated with the candidate value that matches the specified value included in the specification message in the correspondence relationship. The control unit 32 then controls the bias of the power amplifier 37 to the identified bias value. This makes it possible to reduce the power consumption of the power amplifier 37.
  • the DU device 20 limits the number of frequency resources used in the communication system 1 according to the specified value of the transmission resource upper limit. As a result, the smaller the specified value, the more the average power of the transmission signal (multicarrier modulated signal) in the RU device 30 can be limited (reduced). Furthermore, in the RU device 30, the control unit 32 sets the threshold for the peak power reduction unit 36 based on the specified value indicated by the information included in the specification message. As a result, the smaller the specified value, the more the peak power of the transmission signal (multicarrier modulated signal) can be suppressed. As a result, the smaller the specified value, the less the power of the signal input to the power amplifier 37 can be reduced.
  • the power of the signal input to the power amplifier 37 will fall within the linear range of the power amplifier 37. Reducing the drain current of the power amplifier 37 can reduce the power consumption of the power amplifier 37. Furthermore, because the power of the signal input to the power amplifier 37 falls within the linear range of the power amplifier 37, the power amplifier 37 can be operated in the linear range. As a result of the above, it is possible to achieve unified power consumption reductions by the DU device 20 and the RU device 30.
  • FIG. 5A shows an example of the amplification characteristics of the power amplifier 37.
  • the power of the input signal to the power amplifier 37 falls within the linear region of the power amplifier 37, and the power amplifier 37 operates in the linear region.
  • the input signal to this power amplifier 37 is, for example, an input signal at the maximum bandwidth.
  • the drain current of the power amplifier 37 is limited, the range of the linear region in the amplification characteristics of the power amplifier 37 (the new amplification characteristics of FIG. 5B) becomes narrower, as shown in FIG. 5B. In this case, the peak power falls into the nonlinear region of the power amplifier 37, causing nonlinear distortion in the output signal from the power amplifier 37.
  • the DU device 20 simply limits the number of frequency resources used by the communication system 1 in accordance with the specified value of the transmission resource upper limit, as in Figure 5B, when the drain current of the power amplifier 37 is limited, the peak power will enter the nonlinear region of the power amplifier 37, causing nonlinear distortion in the output signal of the power amplifier 37.
  • the DU device 20 limits the number of frequency resources used by the communication system 1 according to the specified value of the transmission resource upper limit, and the control unit 32 in the RU device 30 sets the threshold of the peak power reduction unit 36 based on the specified value indicated by the information included in the specification message.
  • the power of the signal input to the power amplifier 37 falls within the linear range of the power amplifier 37, allowing the power amplifier 37 to operate in the linear range.
  • the determination unit 41 determines a designated value from among multiple candidate values for the transmission resource upper limit value. For example, the determination unit 41 holds a correspondence relationship that associates multiple candidate values with time information corresponding to each candidate value. The determination unit 41 then determines, as the designated value, the candidate value that is associated with the time information corresponding to the current time in the correspondence relationship.
  • the determination unit 41 may further determine the start time of application of the specified value and the duration for which the specified value will continue to be applied.
  • the determination unit 41 can determine the start time of application of the specified value and the duration for which the specified value will continue to be applied based on the above-mentioned predetermined pattern. For example, in 5G NR (New Radio), DU and RU devices generally operate in slot time units, so it is optimal to set the application start time at a slot granularity. However, one slot on a 30 kHz subcarrier is 0.5 ms.
  • the control unit 32 sets the threshold value of the peak power reduction unit 36 based on the specified value indicated by the information included in the specification message.
  • the control unit 32 also controls the amplification characteristics of the power amplifier 37 based on the specified value indicated by the information included in the specification message.
  • the specification message includes information indicating the start time of application of the specified value and the duration for which application of the specified value continues, the control unit 32 may set the threshold value of the peak power reduction unit 36 to the start time of application.
  • the control unit 32 may also start controlling the amplification characteristics of the power amplifier 37 at the start time of application.
  • the third embodiment mainly relates to a designation message transmitted from a DU device to an RU device. That is, in the third embodiment, a control device transmits a designation message to a DU device, and the DU device transmits the designation message to an RU device as a C-Plane message.
  • the basic configuration of the communication system of the second embodiment is the same as the configuration of the communication system 1 of the first embodiment, so refer to FIG. 1.
  • the basic configuration of the control device of the third embodiment is the same as the control device 10 of the first embodiment or the control device 40 of the second embodiment, so refer to FIG. 2 or FIG. 7.
  • the basic configuration of the RU device of the third embodiment is the same as the RU device 30 of the first embodiment, so refer to FIG. 4.
  • Example of DU device configuration> 8 is a block diagram showing another example of a DU device according to the present disclosure.
  • the DU device 50 includes an acquisition unit 51, a control unit 52, a formation unit 53, and a transmission unit 54.
  • the communication system 1 of the third embodiment includes the DU device 50 instead of the DU device 20.
  • the acquisition unit 51 acquires a designation message (hereinafter sometimes referred to as a first designation message) from the control device 10.
  • the first designation message is, for example, a designation value for the transmission resource upper limit value, and includes information regarding the designation value that is common to the RU device 30.
  • the formation unit 53 forms a designated message (hereinafter sometimes referred to as a second designated message) as a C-Plane message using the information contained in the first designated message obtained from the control device 10.
  • Figure 9 is a diagram showing an example of a designated message as a C-Plane message.
  • An example of the structure of a C-Plane message is specified in Chapter 7 of Non-Patent Document 1.
  • Chapter 7 of Non-Patent Document 1 already defines nine Section Types, Section Types 0-8. Section Types are assigned according to the information indicated by the C-Plane message.
  • a new "Section Type Z" is defined.
  • "Section Type Z" is a Section Type for specifying the designated value of the transmission resource upper limit value to the RU device 30.
  • C-Plane messages of Section Types 0-8 require real-time performance, so are transmitted at intervals of, for example, several hundred microseconds.
  • Section Type 8 is assigned to "ACK/NACK Feedback.”
  • C-Plane messages of Section Type Z (second designated messages) are transmitted at intervals of approximately 1 to 10 milliseconds.
  • the second specification message includes an information element that can specify the Section Type of the information transmitted by the C-Plane message, and this information element holds a first Section Type value that indicates that the information transmitted by the C-Plane message is the transmission resource upper limit value.
  • the transmission interval of a C-Plane message of the first Section Type indicated by the first Section Type value is longer than the transmission interval of a C-Plane message of any other Section Type other than the first Section Type.
  • the C-Plane message of Section Type Z includes an information element (TX Power/Bandwidth indication IE in Figure 9) that includes information related to the specified value of the transmission resource upper limit.
  • TX Power/Bandwidth indication IE includes information related to the specified value of the transmission resource upper limit.
  • the TX Power/Bandwidth Indicator included in the TX Power/Bandwidth indication IE consists of 7 bits (0-128).
  • the transmitter 54 transmits the second designation message to the RU device 30.
  • the targets for specifying transmission resource upper limit values are four antenna units, Antennas #0-3, and four eAxC-IDs, 0x0000-0x0003, are assigned to the four antenna units.
  • the eAxC-IDs may be prepared as follows: 4T4R: 0x0000-0x0003: Antenna#0-3 TX. 100% power (100% bandwidth) 4T4R: 0x0010-0x0013: Antenna#0-3 TX. 90% power (90% bandwidth) 4T4R: 0x0020-0x0023: Antenna#0-3 TX. 80% power (80% bandwidth) 4T4R: 0x0030-0x0033: Antenna#0-3 TX. 70% power (70% bandwidth)
  • ⁇ Modification 2 of Third Embodiment> The most significant bit of numPrbc (number of contiguous PRBs per data section description) defined in Chapter 7.5.3.6 of Non-Patent Document 1 may be used to specify the upper limit value of transmission resources.
  • the fourth embodiment relates to a specific configuration example of an RU device.
  • FIG 10 is a diagram showing a specific example configuration of an RU device according to the present disclosure.
  • the RU device 60 has an interface unit 61, a control unit 62, a baseband unit 63, and a radio unit 64.
  • the radio unit 64 includes a filter unit 64A, a frequency conversion unit 64B, a peak power reduction unit 64C, and a distortion compensation unit 64D.
  • the radio unit 64 further has a digital-to-analog conversion unit (D/A) 64E, a power amplifier 64F, a filter unit 64G, and an analog-to-digital conversion unit (A/D) 64H.
  • D/A digital-to-analog conversion unit
  • A/D analog-to-digital conversion unit
  • the interface unit 61 receives signals transmitted from other nodes.
  • the interface unit 61 corresponds to, for example, the acquisition unit 31 in the first embodiment.
  • the interface unit 61 may also receive signals transmitted from the DU devices 20 and 50 and extract C-Plane signals and U (User)-Plane signals from the received signals.
  • the interface unit 61 then outputs the C-Plane signals and U-Plane signals to the baseband unit 63, and outputs the C-Plane signals to the control unit 62.
  • control unit 62 sets the threshold value of the peak power reduction unit 64C based on the specified value indicated by the information included in the specification message received by the interface unit 61. Also, similar to the control unit 32 in the first embodiment, the control unit 62 controls the amplification characteristics of the power amplifier 64F based on the specified value indicated by the information included in the specification message.
  • the baseband unit 63 performs various signal processing, including beamforming and OFDM modulation, on the U-Plane signal based on C-Plane control to form a transmission signal.
  • the filter unit 64A applies band limitation to the transmission signal formed by the baseband unit 63 and outputs the band-limited transmission signal to the frequency conversion unit 64B.
  • the filter unit 64A is, for example, a digital filter.
  • the frequency conversion unit 64B shifts the frequency of the transmission signal received from the filter unit 64A. For example, the frequency conversion unit 64B shifts the frequency of the transmission signal from the baseband to the intermediate frequency band.
  • the peak power reduction unit 64C reduces the peak power of the transmitted radio signal based on a set threshold, similar to the peak power reduction unit 36 of the first embodiment.
  • the distortion compensation unit 64D performs distortion compensation processing on the transmission signal received from the peak power reduction unit 64C so as to cancel out the distortion components contained in the feedback signal received from the distortion monitoring feedback path including the analog-to-digital conversion unit 64H.
  • the digital-to-analog conversion unit 64E converts the digital transmission signal received from the distortion compensation unit 64D into an analog transmission signal (transmission radio signal).
  • the power amplifier 64F amplifies the input transmission radio signal according to the amplification characteristics of the power amplifier 37.
  • the output signal of the power amplifier 64F is output to the filter unit 64G and the analog-to-digital conversion unit 64H.
  • the filter unit 64G reduces the radiated power outside the desired band in the transmitted radio signal received from the power amplifier 64F.
  • the radio signal that passes through the filter unit 64G is radiated into the air via the antenna.
  • the analog-to-digital converter 64H converts the analog radio signal received from the power amplifier 64F into a digital radio signal.
  • FIG. 11 is a diagram illustrating an example configuration of a control device.
  • the control device 100 includes a processor 101 and a memory 102.
  • the control devices 10 and 40 may have the configuration illustrated in FIG. 11.
  • the processor 101 may be, for example, a microprocessor, a microprocessing unit (MPU), or a central processing unit (CPU).
  • the processor 101 may include multiple processors.
  • the memory 102 is configured by a combination of volatile memory and nonvolatile memory.
  • the memory 102 may include multiple physically independent memory devices.
  • the volatile memory may be, for example, static random access memory (SRAM), dynamic RAM (DRAM), or a combination thereof.
  • SRAM static random access memory
  • DRAM dynamic RAM
  • the nonvolatile memory may be, for example, mask read only memory (MROM), electrically erasable programmable ROM (EEPROM), flash memory, a hard disk drive, or any combination thereof.
  • the memory 102 may include storage located remotely from the processor 101. In this case, the processor 101 may access the memory 102 via an I (Input)/O (Output) interface (not shown).
  • the memory 102 may store one or more software modules (computer programs) containing instructions and data for performing the processing of the control devices 10, 40 described in the above-described embodiments.
  • the processor 101 may be configured to read and execute the software modules from the memory 102, thereby performing the processing of the control devices 10, 40 described in the above-described embodiments.
  • Figure 12 is a diagram showing an example configuration of a DU device.
  • the device 200 includes a network interface 201, a processor 202, and a memory 203.
  • the DU devices 20 and 50 may have the configuration shown in Figure 12.
  • the network interface 201 is used, for example, to communicate with network elements (e.g., control devices 10, 40, RU devices 30, 60, SMO (Service Management and Orchestration) devices, other RAN nodes).
  • the network interface 1201 may include, for example, a network interface card (NIC) compliant with the IEEE 802.3 series.
  • Processor 202 may be, for example, a microprocessor, an MPU, or a CPU. Processor 202 may include multiple processors.
  • Memory 203 is composed of volatile memory and non-volatile memory. Memory 203 may include multiple physically independent memory devices. Volatile memory is, for example, Static Random Access Memory (SRAM) or Dynamic RAM (DRAM), or a combination of these. Non-volatile memory is Mask Read Only Memory (MROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, or a hard disk drive, or any combination of these. Memory 203 may include storage located remotely from processor 202. In this case, processor 202 may access memory 203 via network interface 201 or an I/O interface.
  • SRAM Static Random Access Memory
  • DRAM Dynamic RAM
  • Non-volatile memory is Mask Read Only Memory (MROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, or a hard disk drive, or any combination of these.
  • Memory 203 may include storage located remotely from processor 202. In this case, processor 202 may access memory 203 via network interface 201 or an I/O interface.
  • the memory 203 may store one or more software modules (computer programs) containing instructions and data for performing the processing by the DU device 20, 50 described in the above-described embodiments.
  • the processor 202 may be configured to read and execute the software modules from the memory 203, thereby performing the processing by the DU device 20, 50 described in the above-described embodiments.
  • Figure 13 is a diagram showing an example configuration of an RU device.
  • device 300 includes antenna array 301, radio frequency transceiver 302, network interface 303, processor 304, and memory 305.
  • RU device 30, 60 may have the configuration shown in Figure 13.
  • RF transceiver 302 performs analog RF signal processing to communicate with UEs.
  • RF transceiver 302 may include multiple transceivers.
  • RF transceiver 302 is coupled to antenna array 301 and processor 304.
  • RF transceiver 302 receives modulation symbol data from processor 304, generates a transmit RF signal, and supplies the transmit RF signal to antenna array 301.
  • RF transceiver 302 also generates a baseband receive signal based on the receive RF signal received by antenna array 301 and supplies it to processor 304.
  • RF transceiver 302 may include an analog beamformer circuit for beamforming.
  • the analog beamformer circuitry includes, for example, multiple phase shifters and multiple power amplifiers.
  • the network interface 303 is used to communicate with network nodes (e.g., control devices 10 and 40, DU devices 20 and 50).
  • the network interface 303 may include, for example, a network interface card (NIC) that complies with the IEEE 802.3 series.
  • NIC network interface card
  • Processor 304 performs digital baseband signal processing (data plane processing) and control plane processing for wireless communication.
  • Processor 304 may include multiple processors.
  • processor 304 may include a modem processor (e.g., Digital Signal Processor (DSP)) that performs digital baseband signal processing and a protocol stack processor (e.g., Central Processing Unit (CPU) or Micro Processing Unit (MPU)) that performs control plane processing.
  • DSP Digital Signal Processor
  • protocol stack processor e.g., Central Processing Unit (CPU) or Micro Processing Unit (MPU)
  • the processor 304 may include a digital beamformer module for beamforming.
  • the digital beamformer module may include a Multiple Input Multiple Output (MIMO) encoder and precoder.
  • MIMO Multiple Input Multiple Output
  • Memory 305 is composed of a combination of volatile memory and non-volatile memory. Volatile memory is, for example, Static Random Access Memory (SRAM) or Dynamic RAM (DRAM), or a combination thereof. Non-volatile memory is Mask Read Only Memory (MROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, or a hard disk drive, or any combination thereof. Memory 305 may include storage located remotely from processor 304. In this case, processor 304 may access memory 305 via network interface 303 or an I/O interface (not shown).
  • SRAM Static Random Access Memory
  • DRAM Dynamic RAM
  • NAND Non-volatile memory is Mask Read Only Memory (MROM), Electrically Erasable Programmable ROM (EEPROM), flash memory, or a hard disk drive, or any combination thereof.
  • Memory 305 may include storage located remotely from processor 304. In this case, processor 304 may access memory 305 via network interface 303 or an I/O interface (not shown).
  • Memory 305 may store one or more software modules (computer programs) containing instructions and data for performing the processing by RU device 30, 60 described in the above-described embodiments.
  • processor 304 may be configured to read and execute the software modules from memory 305, thereby performing the processing by RU device 30, 60 described in the above-described embodiments.
  • (Appendix 1) a forming unit for forming a specification message including information about a specified value of the transmission resource upper limit value actually used in the system; a designation unit that transmits the designation message to at least one of a DU (Distributed Unit) device and an RU (Radio Unit) device;
  • a control device comprising: (Appendix 2) the forming unit forms the designation message including the designated value or an indicator indicating the designated value as information related to the designated value. 2.
  • the generation unit further includes, in the designation message, information indicating a start time of application of the designated value and a duration for which application of the designated value continues, as information regarding the designated value.
  • the control device of claim 2. (Appendix 4)
  • the information indicating the application start time of the specified value is a time parameter in which the absolute time of the application start time is expressed using at least a System Frame Number (SFN).
  • SFN System Frame Number
  • the control device of claim 3. (Appendix 5) a determination unit that determines the designated value from among a plurality of candidate values for the transmission resource upper limit value; 2.
  • the determination unit holds a correspondence relationship that associates the plurality of candidate values with time information corresponding to each candidate value, and determines, as the designated value, a candidate value that is associated with time information corresponding to a current time in the correspondence relationship. 6.
  • the control device of claim 5. (Appendix 7)
  • the transmission resource upper limit value is a bandwidth upper limit value or a transmission power upper limit value. 2. The control device of claim 1.
  • a radio unit including a peak power reduction unit that reduces peak power of a transmission radio signal based on a set threshold, and a power amplifier that amplifies the transmission radio signal; an acquisition unit that acquires a designation message including information about a designated value that is a designated value of a transmission resource upper limit value actually used in the system and is common to a DU (Distributed Unit) device; a control unit that sets the threshold value based on the specified value and controls the amplification characteristics of the power amplifier based on the specified value; RU (Radio Unit) device equipped with: (Appendix 9) the control unit controls the amplification characteristics by controlling a drain current of the power amplifier. 9.
  • the control unit controls the drain current by controlling a gate voltage of the power amplifier. 10.
  • the control unit controls the bias of the power amplifier based on the specified value.
  • the RU device of any one of appendixes 8 to 10. the acquisition unit receives the designation message including, as information related to the designated value, the designated value or an indicator indicating the designated value.
  • the RU device of any one of appendixes 8 to 10. (Appendix 13) the designation message further includes, as information related to the designated value, information indicating a start time of application of the designated value and a duration for which application of the designated value will continue; 13.
  • the information indicating the application start time of the specified value is a time parameter in which the absolute time of the specified value is expressed using at least a System Frame Number (SFN). 14.
  • the transmission resource upper limit value is a bandwidth upper limit value or a transmission power upper limit value.
  • the RU apparatus of claim 8. an acquisition unit that acquires a designation message including information about a designated value that is a designated value of a transmission resource upper limit value actually used in the system and is common to an RU (Radio Unit) device; a control unit that controls the number of frequency resources used in the system based on the specified value; A DU (Distributed Unit) device equipped with the above.
  • the acquisition unit receives the designation message including, as information related to the designated value, the designated value or an indicator indicating the designated value. 17.
  • the DU device of claim 16. the designation message further includes, as information related to the designated value, information indicating a start time of application of the designated value and a duration for which application of the designated value will continue; 18.
  • the DU device of claim 17. (Appendix 19)
  • the information indicating the application start time of the specified value is a time parameter in which the absolute time of the specified value is expressed using at least a System Frame Number (SFN). 19.
  • SFN System Frame Number
  • the transmission resource upper limit value is a bandwidth upper limit value or a transmission power upper limit value. 17.
  • the second designated message includes: It is a C (Control)-Plane message,
  • the C-Plane message includes an information element capable of specifying a Section Type of information transmitted,
  • the information element holds a first Section Type value indicating that the information to be transmitted is the transmission resource upper limit value;
  • a transmission interval of a C-Plane message of a first Section Type indicated by the first Section Type value is longer than a transmission interval of a C-Plane message of a Section Type other than the first Section Type; 22.
  • (Appendix 23) A method executed by a controller, comprising: forming a specification message containing information regarding a specification value of the transmission resource upper limit actually used in the system; transmitting the designation message to at least one of a DU (Distributed Unit) device and a RU (Radio Unit) device; A control method comprising: (Appendix 24) the forming includes forming the specification message including, as information about the specified value, the specified value or an indicator indicating the specified value. 24. The control method of claim 23. (Appendix 25) The forming includes further including, in the designation message, information indicating a start time of application of the designated value and a duration for which application of the designated value continues, as information regarding the designated value. 25. The control method of claim 24.
  • the information indicating the application start time of the specified value is a time parameter in which the absolute time of the application start time is expressed using at least a System Frame Number (SFN). 26.
  • (Appendix 27) 24.
  • the determining step includes determining, as the designated value, a candidate value associated with time information corresponding to a current time in a correspondence relationship that associates the plurality of candidate values with time information corresponding to each candidate value.
  • the transmission resource upper limit value is a bandwidth upper limit value or a transmission power upper limit value. 24.
  • the control method of claim 23 A method executed by a Radio Unit (RU) device, comprising: The RU device includes a radio unit including a peak power reduction unit that reduces peak power of a transmission radio signal based on a set threshold, and a power amplifier that amplifies the transmission radio signal; The method comprises: Acquiring a designation message including information on a designated value that is a designated value of a transmission resource upper limit value actually used in the system and is common to a DU (Distributed Unit) device; setting the threshold value based on the specified value, and controlling the amplification characteristics of the power amplifier based on the specified value; A method comprising: (Appendix 31) the controlling includes controlling the amplification characteristics by controlling a drain current of the power amplifier.
  • RU Radio Unit
  • the controlling includes controlling the drain current by controlling a gate voltage of the power amplifier. 32.
  • the method of claim 31. the controlling includes controlling a bias of the power amplifier based on the specified value. 33.
  • the method of any one of claims 30 to 32. the acquiring includes receiving the designation message including, as information about the designated value, the designated value or an indicator indicating the designated value; 33.
  • the method of any one of claims 30 to 32. the designation message further includes, as information related to the designated value, information indicating a start time of application of the designated value and a duration for which application of the designated value will continue; The method described in Appendix 34.
  • the information indicating the application start time of the specified value is a time parameter in which the absolute time of the specified value is expressed using at least a System Frame Number (SFN).
  • SFN System Frame Number
  • the transmission resource upper limit value is a bandwidth upper limit value or a transmission power upper limit value. 31. The method of claim 30.
  • (Appendix 38) A method executed by a Distributed Unit (DU), Acquiring a designation message including information on a designated value of a transmission resource upper limit value actually used in the system and common to an RU (Radio Unit) device; Controlling the number of frequency resources used in the system based on the specified value; A method comprising: (Appendix 39) the acquiring includes receiving a designation message including, as information about the designated value, the designated value or an indicator indicating the designated value; The method of claim 38. (Appendix 40) the designation message further includes, as information related to the designated value, information indicating a start time of application of the designated value and a duration for which application of the designated value will continue; 39. The method of claim 39.
  • the information indicating the application start time of the specified value is a time parameter in which the absolute time of the specified value is expressed using at least a System Frame Number (SFN). 41.
  • the method of claim 40 The transmission resource upper limit value is a bandwidth upper limit value or a transmission power upper limit value.
  • the method of claim 38. (Appendix 43) forming a second designated message based on the obtained designated message; sending the second designation message to the RU device; 39.
  • the method of claim 38 comprising: (Appendix 44)
  • the second designated message includes: It is a C (Control)-Plane message,
  • the C-Plane message includes an information element capable of specifying a Section Type of information transmitted,
  • the information element holds a first Section Type value indicating that the information to be transmitted is the transmission resource upper limit value;
  • a transmission interval of a C-Plane message of a first Section Type indicated by the first Section Type value is longer than a transmission interval of a C-Plane message of a Section Type other than the first Section Type; 44.
  • the method of claim 43 is a C (Control)-Plane message,
  • the C-Plane message includes an information element capable of specifying a Section Type of information transmitted,
  • the information element holds a first Section Type value indicating that the information to be transmitted is the transmission resource upper limit value;
  • a transmission interval of a C-Plane message of a first Section Type indicated by the first Section Type value is longer than a transmission interval of a C-Plan
  • the transmission resource upper limit value is a bandwidth upper limit value or a transmission power upper limit value. 46.
  • the program according to claim 45. A program that causes a RU (Radio Unit) device to execute processing, the RU device includes a radio unit including a peak power reduction unit that reduces peak power of a transmission radio signal based on a set threshold, and a power amplifier that amplifies the transmission radio signal; The process comprises: Acquiring a designation message including information on a designated value that is a designated value of a transmission resource upper limit value actually used in the system and is common to a DU (Distributed Unit) device; setting the threshold value based on the specified value, and controlling the amplification characteristics of the power amplifier based on the specified value; Including, the program.
  • the controlling includes controlling the amplification characteristics by controlling a drain current of the power amplifier. 53.
  • the program of claim 52. the controlling includes controlling the drain current by controlling a gate voltage of the power amplifier. 54.
  • the controlling includes controlling a bias of the power amplifier based on the specified value. 55.
  • a program according to any one of appendices 52 to 54. the acquiring includes receiving a designation message including, as information about the designated value, the designated value or an indicator indicating the designated value; 55.
  • the designation message further includes, as information related to the designated value, information indicating a start time of application of the designated value and a duration for which application of the designated value will continue; 57.
  • the program according to claim 56. (Appendix 58)
  • the information indicating the application start time of the specified value is a time parameter in which the absolute time of the specified value is expressed using at least a System Frame Number (SFN). 58.
  • SFN System Frame Number
  • the transmission resource upper limit value is a bandwidth upper limit value or a transmission power upper limit value. 53. The program of claim 52.
  • (Appendix 60) A program that causes a DU (Distributed Unit) device to execute processing, Acquiring a specification message including information on a specification value that is a specification value of a transmission resource upper limit value actually used in the system and is common to an RU (Radio Unit) device; Controlling the number of frequency resources used in the system based on the specified value; Programs including.
  • the acquiring includes receiving a designation message including, as information about the designated value, the designated value or an indicator indicating the designated value; 61.
  • the designation message further includes, as information related to the designated value, information indicating a start time of application of the designated value and a duration for which application of the designated value will continue; 62.
  • the program of claim 60 comprising: (Appendix 66)
  • the second designated message includes: It is a C (Control)-Plane message,
  • the C-Plane message includes an information element capable of specifying a Section Type of information transmitted,
  • the information element holds a first Section Type value indicating that the information to be transmitted is the transmission resource upper limit value;
  • a transmission interval of a C-Plane message of a first Section Type indicated by the first Section Type value is longer than a transmission interval of a C-Plane message of a Section Type other than the first Section Type; 66.
  • the program according to claim 65 is a C (Control)-Plane message,
  • the C-Plane message includes an information element capable of specifying a Section Type of information transmitted,
  • the information element holds a first Section Type value indicating that the information to be transmitted is the transmission resource upper limit value;
  • a transmission interval of a C-Plane message of a first Section Type indicated by the first Section Type value is longer than a transmission interval of a
  • Control device 11 Forming unit 12
  • Designation unit 20 DU (Distributed Unit) device 21
  • Acquisition unit 22 Control unit 30 RU (Radio Unit) device 31
  • Acquisition unit 32 Control unit 35
  • Radio unit 36 Peak power reduction unit 37
  • Power amplifier 40 Control device 41
  • Determination unit 42 Forming unit 43
  • Designation unit 50 DU device 51
  • Acquisition unit 52 Control unit 53
  • Forming unit 54 Transmission unit 60 RU device 61 Interface unit 62
  • Control unit 63 Baseband unit 64
  • Radio unit 64A Filter unit 64B Frequency conversion unit

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

Dispositif de commande comprenant : une unité de formation qui forme un message de désignation contenant des informations relatives à une valeur de désignation d'une valeur limite supérieure de ressource de transmission réellement utilisée dans un système ; et une unité de désignation qui transmet le message de désignation à au moins l'un d'un dispositif d'unité distribuée (DU) et d'un dispositif d'unité radio (RU).
PCT/JP2025/026287 2024-08-06 2025-07-24 Dispositif de commande, dispositif ru, dispositif du, procédé et programme Pending WO2026034219A1 (fr)

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Application Number Priority Date Filing Date Title
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JP2024-129627 2024-08-06

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001516541A (ja) * 1997-03-27 2001-09-25 ノキア テレコミュニカシオンス オサケ ユキチュア チャンネル割り当て方法
WO2008123148A1 (fr) * 2007-03-30 2008-10-16 Ntt Docomo, Inc. Système de communication mobile, dispositif de station de base, et dispositif d'utilisateur et procédé
WO2023209831A1 (fr) * 2022-04-26 2023-11-02 株式会社Ｎｔｔドコモ Terminal et station de base
WO2024034148A1 (fr) * 2022-08-10 2024-02-15 楽天モバイル株式会社 Regroupement d'une pluralité de communicateurs pour un mode d'économie d'énergie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001516541A (ja) * 1997-03-27 2001-09-25 ノキア テレコミュニカシオンス オサケ ユキチュア チャンネル割り当て方法
WO2008123148A1 (fr) * 2007-03-30 2008-10-16 Ntt Docomo, Inc. Système de communication mobile, dispositif de station de base, et dispositif d'utilisateur et procédé
WO2023209831A1 (fr) * 2022-04-26 2023-11-02 株式会社Ｎｔｔドコモ Terminal et station de base
WO2024034148A1 (fr) * 2022-08-10 2024-02-15 楽天モバイル株式会社 Regroupement d'une pluralité de communicateurs pour un mode d'économie d'énergie

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