WO2021117245A1 - Dispositif de communication - Google Patents

Dispositif de communication Download PDF

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Publication number
WO2021117245A1
WO2021117245A1 PCT/JP2019/049051 JP2019049051W WO2021117245A1 WO 2021117245 A1 WO2021117245 A1 WO 2021117245A1 JP 2019049051 W JP2019049051 W JP 2019049051W WO 2021117245 A1 WO2021117245 A1 WO 2021117245A1
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Prior art keywords
intermediate device
max
parameters
base station
parameter
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PCT/JP2019/049051
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English (en)
Japanese (ja)
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大輔 平塚
邦彦 手島
アニール ウメシュ
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2019/049051 priority Critical patent/WO2021117245A1/fr
Priority to CN201980102472.9A priority patent/CN114788332A/zh
Publication of WO2021117245A1 publication Critical patent/WO2021117245A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • 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

  • the present invention relates to a communication device corresponding to a front hall interface.
  • the O-RAN Alliance was established with the aim of promoting the openness and intelligentization of wireless access networks (RAN) in the 5G era, and today many businesses / vendors are joining and discussing.
  • RAN wireless access networks
  • O-RAN Distributed Unit O-DU
  • O-RAN Radio Unit O-RU
  • O-RAN Distributed Unit O-DU
  • O-RU O-RAN Radio Unit
  • O-DU is a logical node that mainly hosts the wireless link control layer (RLC), medium access control layer (MAC), and PHY-High layer based on the lower layer functional.
  • the O-RU is a logical node that mainly hosts the PHY-Low layer and RF processing based on the low-level functional division.
  • Non-Patent Document 1 the function sharing points of O-DU / O-RU are placed in the physical (PHY) layer, so strict timing accuracy is required. For this reason, FH delay management is performed, and a transmission window and a reception window are used as the method (Non-Patent Document 1).
  • the current O-RAN FH specifications are premised on a stationing method in which one cell is composed of one O-RU.
  • a stationing method in which one cell is composed of multiple O-RUs and expansion of specifications for that is being considered.
  • FHM Fronthaul Multiplexing
  • cascade configuration a configuration using a device for bundling O-RUs
  • shared Cell Collectively, these are called Shared Cell.
  • FHM and O-RU (cascade O-RU) intervening in the middle are collectively referred to as an intermediate device (tentative name).
  • ORAN-WG4.CUS.0-v02.00 O-RAN Fronthaul Working Group, Control, User and Synchronization Plane Specification, O-RAN Alliance, August 2019
  • the FH delay of O-DU to intermediate device, intermediate device to intermediate device, intermediate device to O-RU, etc. changes depending on the installation position of the intermediate device.
  • the present invention has been made in view of such a situation, and it is determined whether or not the installation position of the intermediate device is appropriate even when the Shared Cell configuration in the front hall (FH) interface is applied. It is an object of the present invention to provide a communication device capable of performing the above.
  • One aspect of the present disclosure is a communication device constituting a first base station provided on the front hall, and is a control for determining parameters used for determining a data reception timing in the intermediate device provided on the front hall.
  • a unit and a transmission unit that transmits the parameters to the intermediate device are provided.
  • One aspect of the present disclosure is a communication device that constitutes an intermediate device provided on the front hall, and is provided on the front hall and a control unit that executes control for determining data reception timing in the intermediate device. It includes a receiving unit that receives parameters used for determining the reception timing from the first base station.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10 according to the embodiment.
  • FIG. 2 is a diagram showing an example of an internal configuration of the gNB 100 that employs the front hole (FH) interface according to the embodiment.
  • FIG. 3A is a diagram showing a configuration example (without an intermediate device) of the front hole according to the embodiment.
  • FIG. 3B is a diagram showing a configuration example of a front hole according to an embodiment (with an intermediate device and an FHM configuration).
  • FIG. 3C is a diagram showing a configuration example of a front hole according to an embodiment (with an intermediate device and a cascade configuration).
  • FIG. 4 is a diagram showing various signals in the front hole (FH) between O-DU110 and O-RU120 according to the embodiment.
  • FIG. 5 is a functional block configuration diagram of the O-DU 110 according to the embodiment.
  • FIG. 6 is a functional block configuration diagram of the intermediate device 130 according to the embodiment.
  • FIG. 7 is a diagram showing an example of delay management of a front hole in UL according to the embodiment.
  • FIG. 8 is a diagram showing an example of delay management of the front hole in the DL according to the embodiment.
  • FIG. 9 is a diagram showing an example of a counter according to the embodiment.
  • FIG. 10 is a diagram showing a wireless communication method according to the embodiment.
  • FIG. 11 is a diagram showing an example of delay management of the front hole in UL according to the first modification.
  • FIG. 12 is a diagram showing an example of delay management of the front hole in the DL according to the change example 1.
  • FIG. 13 is a diagram showing an example of the hardware configuration of the O-DU 110 and the intermediate device 130.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10 according to the embodiment.
  • the wireless communication system 10 is a wireless communication system according to 5G New Radio (NR), and is a Next Generation-Radio Access Network 20 (hereinafter, NG-RAN20, and a terminal 200 (hereinafter, User Equipment 200, hereinafter, UE200). )including.
  • NR 5G New Radio
  • NG-RAN20 Next Generation-Radio Access Network 20
  • UE200 User Equipment 200
  • NG-RAN20 includes a radio base station 100 (hereinafter, gNB100).
  • gNB100 radio base station 100
  • the specific configuration of the wireless communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.
  • the NG-RAN20 actually contains multiple NG-RAN Nodes, specifically gNB (or ng-eNB), and is a core network according to 4G (Evolved Packet Core, not shown) or a core according to 5G. Connected to a network (5GC, not shown).
  • NG-RAN20 and 5GC may be simply expressed as a network.
  • GNB100 is a wireless base station that complies with 5G, and executes wireless communication according to UE200 and 5G.
  • the gNB100 and UE200 include Massive MIMO, which generates a beam with higher directivity by controlling radio signals transmitted from multiple antenna elements, and carrier aggregation (CA), which uses multiple component carriers (CC) in a bundle. It can also support dual connectivity (DC), which communicates simultaneously between the UE and multiple NG-RAN Nodes.
  • Massive MIMO which generates a beam with higher directivity by controlling radio signals transmitted from multiple antenna elements
  • CA carrier aggregation
  • DC dual connectivity
  • the gNB100 adopts the front hole (FH) interface specified by O-RAN.
  • FIG. 2 shows an example of the internal configuration of the gNB100 that employs a front hole (FH) interface.
  • the gNB100 includes an O-DU110 (O-RAN Distributed Unit) and an O-RU120 (O-RAN Radio Unit).
  • O-DU110 and O-RU120 are functionally separated within the physical (PHY) layer defined by 3GPP.
  • the O-DU110 may be called an O-RAN distribution unit.
  • the O-DU110 is a logical node that mainly hosts a wireless link control layer (RLC), a medium access control layer (MAC), and a PHY-High layer based on the lower layer functional.
  • the O-DU110 is provided on the side closer to the NG-RAN20 with respect to the O-RU120.
  • the side closer to NG-RAN20 may be referred to as the RAN side.
  • the O-RU120 may be called an O-RAN radio unit.
  • the O-RU120 is a logical node that mainly hosts the PHY-Low layer and RF processing based on the low-level functional division.
  • the O-RU120 is provided on the side away from the NG-RAN20 with respect to the O-DU110.
  • the side away from the NG-RAN 20 may be referred to as the radio (air) side.
  • the PHY-High layer is the part of PHY processing on the O-DU110 side of the front hole interface, such as Forward Error Correction (FEC) encoding / decoding, scrambling, and modulation / demodulation.
  • FEC Forward Error Correction
  • the PHY-Low layer is the part of PHY processing on the O-RU120 side of the front hole interface, such as Fast Fourier Transform (FFT) / iFFT, digital beamforming, Physical Random Access Channel (PRACH) extraction and filtering.
  • FFT Fast Fourier Transform
  • PRACH Physical Random Access Channel
  • O-CU is an abbreviation for O-RANControlUnit, which is a logical node that hosts PacketDataConvergenceProtocol (PDCP), RadioResourceControl (RRC), ServiceDataAdaptationProtocol (SDAP), and other control functions. ..
  • PDCP PacketDataConvergenceProtocol
  • RRC RadioResourceControl
  • SDAP ServiceDataAdaptationProtocol
  • the front hall (FH) may be interpreted as a line between the baseband processing unit of a wireless base station (base station device) and the wireless device, and an optical fiber or the like is used.
  • Shared Cell configuration As described above, in O-RAN, there is also a stationing method in which one cell is configured by multiple O-RUs, a configuration using a device (FHM: Fronthaul Multiplexing) that bundles O-RUs, and continuous operation. A configuration for connecting O-RUs (cascade configuration) is being studied. Collectively, these are called Shared Cell.
  • FHM Fronthaul Multiplexing
  • FIGS. 3A to 3C show a configuration example of the front hall.
  • FIG. 3A is an example in which one cell is configured by 1O-RU.
  • FIGS. 3B and 3C show an example of the Shared Cell configuration.
  • FIG. 3B shows a configuration example using FHM130.
  • FIG. 3C shows an example in which O-RU130A is interposed between O-DU110 and O-RU120 and cascade-connected.
  • the FHM130 combines two FH signals from each O-RU120 and then transmits the two FH signals to the O-DU110.
  • the O-DU110 is an example of a first base station provided on the RAN side of the FHM130
  • the O-RU120 is an example of a second base station provided on the air side of the FHM130.
  • the O-RU130A includes a signal received by the O-RU130A (O-RU (1)) itself in the radio section and an FH signal received from the O-RU120 (O-RU (2)). Is synthesized and then sent to O-DU110.
  • the O-DU110 is an example of the first base station provided on the RAN side of the FHM130
  • the O-RU120 (O-RU (2)) is provided on the air side of the FHM130. This is an example of two base stations.
  • FHM130 and O-RU130A are collectively referred to as intermediate device 130.
  • the name of the intermediate device may be called by another name.
  • the intermediate device 130 is provided on the air side of the O-DU 110 constituting the first base station, and is provided on the RAN side of the O-RU 120 constituting the second base station.
  • the intermediate device 130 transfers the DL signal received from the O-DU110 (first base station) to the O-RU120 (second base station) for the downlink (DL). To do.
  • the intermediate device 130 may further transmit the DL signal of the O-RU itself.
  • the intermediate device 130 For the uplink (UL), the intermediate device 130 synthesizes the UL signal received from the O-RU120 (second base station) and transfers it to the O-DU110 (first base station). In the case of O-RU cascade connection, the radio signal received by O-RU itself is also combined.
  • the O-DU110 can process signals as if one O-RU was connected.
  • FIG. 4 shows various signals in the front hole (FH) between O-DU110 and O-RU120. As shown in FIG. 4, signals in a plurality of planes are transmitted and received between O-DU110 and O-RU120.
  • U / C / M / S-plane signals are transmitted and received.
  • C-Plane is a protocol for transferring control signals
  • U-Plane is a protocol for transferring user data.
  • S-Plane is a protocol for realizing synchronization between devices.
  • M-Plane is a management plane that handles maintenance and monitoring signals.
  • the U-Plane signal includes a (DL) signal transmitted by the O-RU120 to the radio section and a (UL) signal received from the radio section, and is exchanged by a digital IQ signal.
  • U-Plane signals data such as User Datagram Protocol (UDP) and Transmission Control Protocol (TCP)
  • C-Plane RRC, Non-Access Stratum (NAS), etc.
  • U-Planes from the viewpoint of FH.
  • the C-Plane signal includes signals necessary for various controls related to transmission / reception of U-Plane signals (signals for notifying information related to radio resource mapping and beamforming of the corresponding U-Plane). It should be noted that the signal is completely different from the C-Plane (RRC, NAS, etc.) defined in 3GPP.
  • the M-Plane signal includes the signal necessary for managing the O-DU110 / O-RU120. For example, it is a signal for notifying various hardware (HW) capabilities of O-RU120 to O-RU120 and notifying various setting values from O-DU110 to O-RU120.
  • HW hardware
  • the S-Plane signal is a signal required for synchronous control between O-DU110 / O-RU120.
  • FIG. 5 is a functional block configuration diagram of the O-DU110.
  • the O-DU 110 includes a communication unit 111, an acquisition unit 113, a notification unit 115, and a control unit 117.
  • the communication unit 111 executes communication with the O-RU 120 and the intermediate device 130. Specifically, the communication unit 111 is connected to the FH line and can transmit and receive signals of various planes shown in FIG.
  • Acquisition unit 113 acquires various parameters.
  • the acquisition unit 113 may acquire the parameters shown below for the UL signal.
  • the parameters may include parameters (Ta4_min, Ta4_max) that define the reception window (Reception window (UL)) of the O-DU110.
  • the parameters (Ta4_min, Ta4_max) may be interpreted as the measurement results from reception at the O-RU antenna to reception at the O-DU port (R4).
  • the parameters (Ta4_min, Ta4_max) may be measured by a delay measurement message (Measured Transport Method).
  • the parameters may include the parameters (Ta3_min, Ta3_max) that define the transmission window (UL) of the O-RU120.
  • the parameters (Ta3_min, Ta3_max) may be interpreted as the measurement results from reception at the O-RU antenna to output at the O-RU port (R3).
  • the parameters (Ta3_min, Ta3_max) are an example of the ability information of O-RU120.
  • the parameters (Ta3_min, Ta3_max) may be received from O-RU120.
  • the parameter may include a parameter (T34_min) indicating the difference between Ta4_min and Ta3_min.
  • the parameter may include a parameter (T34_max) indicating the difference between Ta4_max and Ta3_max.
  • a parameter (for example, T_Comb) indicating the processing time of the intermediate device 130 may be acquired.
  • the parameter (eg, T_Comb) may be received from the intermediate device 130.
  • the processing time in the intermediate device 130 may be interpreted as the time inside the intermediate device 130 required to combine the FH signals received from the plurality of O-RU 120s in the intermediate device 130.
  • the processing time may be a time required for the synthesis itself plus a time such as a certain margin.
  • the processing time may be referred to by another name, for example, operating time, internal delay, processing delay, synthesis time, and the like.
  • parameters indicating the delay time between the intermediate device 130 and the O-DU110 may be acquired.
  • Parameters eg, T_FH1_min, T_FH1_max
  • T_FH1_min, T_FH1_max may be measured or calculated by the O-DU110 based on the UL signal.
  • FH1 the FH between the intermediate device 130 and the O-DU110 will be referred to as FH1.
  • parameters indicating the delay time between the O-RU 120 and the intermediate device 130 may be acquired.
  • the parameters eg, T_FH2_min, T_FH2_max
  • the parameters may be measured or calculated by the intermediate device 130 based on the UL signal.
  • Parameters eg, T_FH2_min, T_FH2_max
  • FH2_min, T_FH2_max may be received from intermediate device 130.
  • the acquisition unit 113 may acquire the parameters shown below for the DL signal.
  • the parameters may include parameters (Ta1_min, Ta1_max) that define the transmission window (Transmission window (DL)) of the O-DU110.
  • the parameters (Ta1_min, Ta1_max) may be interpreted as the measurement results from the output at the O-DU port (R1) to the wireless transmission.
  • the parameters (Ta1_min, Ta1_max) may be measured by a delay measurement message (Measured Transport Method).
  • the parameters may include parameters (Ta2_min, Ta2_max) that define the reception window (Reception window (DL)) of the O-RU120.
  • the parameters (Ta2_min, Ta2_max) may be interpreted as measurement results from reception at the O-RU port (R2) to wireless transmission.
  • the parameters (Ta2_min, Ta2_max) are an example of the ability information of O-RU120.
  • the parameters (Ta2_min, Ta2_max) may be received from O-RU120.
  • the parameter may include a parameter (T12_min) indicating the difference between Ta1_min and Ta2_min.
  • the parameter may include a parameter (T12_max) indicating the difference between Ta1_max and Ta2_max.
  • a parameter (for example, T_Copy) indicating the processing time of the intermediate device 130 may be acquired.
  • the parameter (eg, T_Copy) may be received from the intermediate device 130.
  • the processing time in the intermediate device 130 may be interpreted as the time inside the intermediate device 130 required to copy the FH signal transmitted to the plurality of O-RU 120s in the intermediate device 130.
  • the processing time may be a time required for the duplication itself plus a time such as a certain margin.
  • the processing time may be referred to by another name, for example, operating time, internal delay, processing delay, replication time, and the like.
  • parameters indicating the delay time between the intermediate device 130 and the O-DU110 may be acquired.
  • the parameters eg, T_FH1_min, T_FH1_max
  • the parameters may be measured or calculated by the intermediate device 130 based on the DL signal.
  • Parameters eg, T_FH1_min, T_FH1_max
  • T_FH1_min, T_FH1_max may be received from intermediate device 130.
  • parameters indicating the delay time between the O-RU 120 and the intermediate device 130 may be acquired.
  • Parameters eg, T_FH2_min, T_FH2_max
  • Parameters may be measured or calculated on the O-RU120 based on the DL signal.
  • Parameters eg, T_FH2_min, T_FH2_max
  • min and max may mean the minimum and maximum values of propagation delay.
  • the propagation delay may be referred to by another name, for example, transmission delay, transmission time, delay time, transfer delay, delay, or the like.
  • Notification unit 115 notifies each information.
  • the notification unit 115 notifies the intermediate device 130 of parameters (for example, TH_min, TH_max) used for determining the data reception timing in the intermediate device 130.
  • the parameters eg, TH_min, TH_max
  • the processing time eg, T_Comb, T_Copy
  • the notification unit 115 constitutes a transmission unit that transmits parameters (for example, TH_min, TH_max) to the intermediate device 130.
  • the control unit 117 controls the values of various parameters used on the FH.
  • the control unit 117 controls the value related to the propagation delay between O-DU110 and O-RU120 (including the case where the intermediate device 130 intervenes).
  • control unit 117 may determine the reception window (Ta4_min, Ta4_max) applied to the O-DU110 itself based on the propagation delay (T34_min, T34_max) between O-DU110 and O-RU120 for the UL signal. Good. Similarly, the control unit 117 determines the transmission window (Ta1_min, Ta1_max) applied to the O-DU110 itself based on the DL propagation delay (T12_min, T12_max) between the O-DU110 and the O-RU120 for the DL signal. You may.
  • control unit 117 constitutes a control unit that determines parameters (for example, TH_min, TH_max) used in determining the data reception timing in the intermediate device 130.
  • the control unit 117 may determine the parameters (for example, TH_min, TH_max) based on the processing time (for example, T_Comb, T_Copy) in the intermediate device 130.
  • the control unit 117 may determine the parameters of the O-DU 110 based on the capability information of the O-RU 120.
  • the control unit 117 may determine the parameters based on the delay time between the intermediate device 130 and the O-DU 110.
  • the control unit 117 may determine the parameters based on the delay time between the O-RU 120 and the intermediate device 130.
  • control unit 117 may determine parameters (for example, TH_min, TH_max) for the UL signal based on the following equation as shown in FIG.
  • Ta3_min is an example of the ability information of O-RU120.
  • T_FH2_min is the minimum delay time between O-RU120 and intermediate device 130.
  • Ta4_max is the sum of Ta3_max and T34_max.
  • Ta3_max is an example of the ability information of O-RU120.
  • T34_max is the maximum propagation delay for the UL signal between O-DU110 and O-RU120.
  • T_FH1_max is the maximum value of the delay time between the intermediate device 130 and the O-DU110.
  • T_Comb is the processing time of the intermediate device 130.
  • the parameters (TH_min, TH_max) may be considered as parameters that define the reception window of the intermediate device 130 regarding the UL signal.
  • the parameters (TH_min, TH_max) may be considered as a threshold value used for determining the reception timing of the UL signal.
  • the formulas for calculating TH_min and TH_max are not limited to the above formulas.
  • the formulas for calculating TH_min and TH_max may be rewritten as long as the relationship shown in FIG. 7 is satisfied.
  • the minimum propagation delay values eg, T_FH1_min, T_FH2_min
  • the minimum delay time may be set to zero.
  • control unit 117 may determine parameters (for example, TH_min, TH_max) based on the following equation as shown in FIG.
  • Ta1_max is the sum of Ta2_max and T12_min.
  • Ta2_max is an example of the ability information of O-RU120.
  • T12_min is the minimum value of the propagation delay for the DL signal between O-DU110 and O-RU120 (ie, T_FH1_min + T_Copy + T_FH2_min).
  • T_FH1_min is the minimum value of the delay time between the intermediate device 130 and the O-DU110.
  • Ta1_min is the sum of Ta2_min and T12_max.
  • Ta2_min is an example of the ability information of O-RU120.
  • T12_max is the maximum value of the propagation delay for the DL signal between O-DU110 and O-RU120 (ie, T_FH1_max + T_Copy + T_FH2_max).
  • FH2_max is the maximum delay time between O-RU120 and intermediate device 130.
  • T_Copy is the processing time of the intermediate device 130.
  • the parameters (TH_min, TH_max) may be considered as parameters that define the reception window of the intermediate device 130 regarding the UL signal.
  • the parameters (TH_min, TH_max) may be considered as a threshold value used for determining the reception timing of the DL signal.
  • the formulas for calculating TH_min and TH_max are not limited to the above formulas.
  • the formulas for calculating TH_min and TH_max may be rewritten as long as the relationship shown in FIG. 8 is satisfied.
  • the minimum propagation delay values eg, T_FH1_min, T_FH2_min
  • the minimum value of the propagation delay (for example, T_FH1_min, T_FH2_min) may be set to zero.
  • FIG. 6 is a functional block configuration diagram of the intermediate device 130. As shown in FIG. 6, the intermediate device 130 is provided on the FH and includes a communication unit 131, a notification unit 133, an acquisition unit 135, and a control unit 137.
  • Communication unit 131 executes communication with O-DU110 and O-RU120. Specifically, the communication unit 131 is connected to the FH line and can transmit and receive signals of various planes shown in FIG.
  • Notification unit 133 notifies each information.
  • the notification unit 133 notifies the O-DU 110 of parameters (for example, T_Comb, T_Copy) indicating the processing time of the intermediate device 130.
  • Acquisition unit 135 acquires various parameters. For example, the acquisition unit 135 acquires parameters (for example, TH_min, TH_max) used in determining the data reception timing in the intermediate device 130. In the embodiment, the acquisition unit 135 constitutes a reception unit that receives parameters (for example, TH_min, TH_max) from the O-DU 110.
  • parameters for example, TH_min, TH_max
  • the acquisition unit 135 constitutes a reception unit that receives parameters (for example, TH_min, TH_max) from the O-DU 110.
  • the control unit 137 constitutes a control unit that executes control for determining the data reception timing in the intermediate device 130. Specifically, the control unit 137 executes control for determining the data reception timing based on the parameters (TH_min, TH_max) received from the O-DU 110. For example, the control unit 137 may determine whether or not the data is received at a timing earlier than the timing defined by the parameter (TH_min) based on the parameter (TH_min) received from the O-DU 110. The control unit 137 may determine whether or not the data is received at a timing later than the timing defined by the parameter (TH_max) based on the parameter (TH_max) received from the O-DU 110.
  • the control unit 137 may have a counter (Performance counter (s)) shown in FIG.
  • the control unit 137 may have a counter (for example, Rx_on_time_for_shared_cell) that counts the number of times data is received at an appropriate timing. The appropriate timing is later than the timing defined by the parameter (TH_min) and earlier than the timing defined by the parameter (TH_max).
  • the control unit 137 may have a counter (Rx_early_for_shared_cell) that counts the number of times data is received at a timing earlier than the timing defined by the parameter (TH_min).
  • the control unit 137 may have a counter (Rx_late_for_shared_cell) that counts the number of times data is received at a timing later than the timing defined by the parameter (TH_max).
  • the name and meaning of the counter shown in FIG. 9 are arbitrary.
  • the names (Rx_on_time, Rx_early, Rx_late) of the counters (Performance counter (s)) defined in ORAN-WG4.CUS.0-v02.00 may be used.
  • the count value of such a count is used to determine whether or not the installation position of the intermediate device 130 is appropriate.
  • the telecommunications carrier may change the installation position of the intermediate device 130 based on the count value.
  • the intermediate device 130 may have both a counter used as the intermediate device 130 and a counter used as the O-RAN.
  • the counter used as O-RAN may be the counter (Performance counter (s)) defined in ORAN-WG4.CUS.0-v02.00.
  • the O-DU 110 receives parameters (for example, T_Comb, T_Copy) indicating the processing time of the intermediate device 130 from the intermediate device 130.
  • the O-DU110 may receive parameters indicating the delay time between the intermediate device 130 and the O-DU110 (for example, T_FH1_min, T_FH1_max).
  • the O-DU110 receives parameters indicating the ability information of the O-RU120 (for example, T3a_min, T3a_max, T2a_min, T2a_max).
  • the O-DU110 may receive parameters indicating the delay time between the O-RU 120 and the intermediate device 130 (for example, T_FH2_min, T_FH2_max).
  • the O-DU 110 determines the parameters (for example, TH_min, TH_max) used to determine the data reception timing in the intermediate device 130.
  • the O-DU110 may determine the parameters based on the processing time of the intermediate device 130.
  • the O-DU110 may determine the parameters based on the capability information of the O-RU120.
  • the O-DU110 may determine the parameters based on the delay time between the intermediate device 130 and the O-DU110.
  • the O-DU110 may determine the parameters based on the delay time between the O-RU120 and the intermediate device 130.
  • step S13 the O-DU110 transmits the parameters (for example, TH_min, TH_max) determined in step S12 to the intermediate device 130.
  • the parameters for example, TH_min, TH_max
  • the intermediate device 130 determines the data reception timing based on the parameters (for example, TH_min, TH_max) received in step S13. For example, as described with reference to FIG. 9, the intermediate device 130 may count the number of times data is received at an appropriate timing. The intermediate device 130 may count the number of times data is received at a timing earlier than the timing defined by the parameter (TH_min). The intermediate device 130 may count the number of times data is received at a timing later than the timing defined by the parameter (TH_max).
  • the parameters for example, TH_min, TH_max
  • the O-DU 110 determines the parameters (for example, TH_min, TH_max) used in the intermediate device 130 for determining the data reception timing, and transmits the determined parameters to the intermediate device 130. You may. According to such a configuration, the intermediate device 130 can appropriately determine the data reception timing. As a result, it can be determined whether or not the installation position of the intermediate device 130 is appropriate.
  • the parameters for example, TH_min, TH_max
  • the parameters may be determined based on the processing time of the intermediate device 130. According to such a configuration, an appropriate parameter can be set as a parameter used for determining the data reception timing in the intermediate device 130.
  • the parameters may be determined based on the capability information of the O-RU120 or based on the delay time between the intermediate device 130 and the O-DU110.
  • O-DU110 may be determined based on the delay time between O-RU120 and intermediate device 130. According to such a configuration, more appropriate parameters can be set.
  • whether or not the installation position of the intermediate device 130 is appropriate by introducing a new mechanism (for example, the counter shown in FIG. 9) that the data reception timing should be determined in the intermediate device 130. Can be determined.
  • a new mechanism for example, the counter shown in FIG. 9
  • the DL signal can be considered in the same way as the UL signal, the UL signal will be described here as an example.
  • FIG. 11 illustrates a case where the propagation delay of FH2-1 is larger than the propagation delay of FH2-2.
  • the O-DU 110 determines the parameters (for example, TH_min, TH_max) used in the intermediate device 130 for determining the data reception timing, as in the embodiment.
  • the O-DU110 may determine TH_min with reference to the O-RU120Y having a small propagation delay.
  • O-DU110 may determine TH_max with reference to O-RU120X, which has a large propagation delay. Therefore, TH_min and TH_max may be expressed by the following equations.
  • Ta4_max is the sum of Ta3_max (O-RU120X) and T34_max (O-RU120X).
  • T34_max (O-RU120X) is the sum of T_FH2-1max, T_Comb (O-RU120X), and T_FH1_max.
  • modification 1 can be applied to the case where three or more O-RU120s are provided on the air side of the intermediate device 130. That is, TH_min is determined based on O-RU120 having the smallest propagation delay, and TH_max is determined based on O-RU120 having the largest propagation delay.
  • the DL signal can be considered in the same way as the UL signal, the UL signal will be described here as an example.
  • an intermediate device 130P and an intermediate device 130Q are provided in series between the O-DU 110 and the O-RU 120.
  • the FH between the O-DU110 and the intermediate device 130P is called FH1
  • the FH between the intermediate device 130P and the intermediate device 130Q is called FH2
  • the FH between the intermediate device 130Q and the O-RU120X Is called FH3.
  • the O-DU110 determines the parameters (TH_min and TH_max) for each of the intermediate device 130P and the intermediate device 130Q.
  • the parameters used in the intermediate device 130P are called TH (p) _min and TH (p) _max, and the parameters used in the intermediate device 130Q are called TH (q) _min and TH (q) _max.
  • these parameters may be expressed by the following equation as shown in FIG.
  • the concept of the second modification can also be applied to the case where three or more intermediate devices 130 are provided between the O-DU 110 and the O-RU 120.
  • TH_min and TH_max are used as the names of the parameters used in determining the data reception timing in the intermediate device 130.
  • the embodiment is not limited to this.
  • TH_min may be referred to as the start timing of the receive window of the intermediate device 130, or may be referred to as a parameter that defines the start timing.
  • TH_max may be referred to as the end timing of the receive window of the intermediate device 130, or may be referred to as a parameter that defines the end timing.
  • reception window of the intermediate device 130 may be referred to as a waiting time of the intermediate device 130 when two or more O-RA 130s are provided on the air side of the intermediate device 130.
  • the O-DU 110 notifies the intermediate device 130 of TH_min and TH_max) as parameters used for determining the reception timing.
  • the embodiment is not limited to this.
  • information known to the intermediate device 130 eg, max-T_Comb
  • the O-DU110 can be sent to the intermediate device 130. The amount of signaling can be reduced.
  • FIGS. 3B and 3C an example in which FHM or O-RU (cascade connection) is applied as the intermediate device 130 is shown separately, but on the same FH, with FHM. , O-RU by cascade connection may be configured in a complex manner.
  • the configuration of the FH according to the O-RAN specifications has been described, but the FH does not necessarily have to comply with the O-RAN specifications.
  • the FH does not necessarily have to comply with the O-RAN specifications.
  • at least some of the O-DU110, O-RU120 and intermediate device 130 may comply with the FH specifications specified in 3GPP.
  • each functional block may be realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices.
  • the functional block may be realized by combining the software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption.
  • broadcasting notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but only these. I can't.
  • a functional block (constituent unit) for functioning transmission is called a transmitting unit or a transmitter.
  • the method of realizing each of them is not particularly limited.
  • FIG. 13 is a diagram showing an example of the hardware configuration of the device.
  • the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the device may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
  • Each functional block of the device (see FIGS. 5 and 6) is realized by any hardware element of the computer device or a combination of the hardware elements.
  • the processor 1001 performs the calculation, controls the communication by the communication device 1004, and the memory. It is realized by controlling at least one of reading and writing of data in 1002 and storage 1003.
  • Processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be composed of a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
  • CPU central processing unit
  • the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
  • a program program code
  • a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the various processes described above may be executed by one processor 1001 or may be executed simultaneously or sequentially by two or more processors 1001.
  • Processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the memory 1002 is a computer-readable recording medium, and is composed of at least one such as ReadOnlyMemory (ROM), ErasableProgrammableROM (EPROM), Electrically ErasableProgrammableROM (EEPROM), and RandomAccessMemory (RAM). May be done.
  • the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store a program (program code), a software module, or the like that can execute the method according to the embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, an optical disk such as a Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
  • Storage 1003 may be referred to as auxiliary storage.
  • the recording medium described above may be, for example, a database, server or other suitable medium containing at least one of memory 1002 and storage 1003.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
  • FDD frequency division duplex
  • TDD time division duplex
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • Bus 1007 may be configured using a single bus or may be configured using different buses for each device.
  • the device includes hardware such as a microprocessor, a digital signal processor (Digital Signal Processor: DSP), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), and a Field Programmable Gate Array (FPGA).
  • the hardware may implement some or all of each functional block.
  • processor 1001 may be implemented using at least one of these hardware.
  • information notification includes physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI), upper layer signaling (eg, RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block)). (MIB), System Information Block (SIB)), other signals or a combination thereof.
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • RRC signaling may also be referred to as an RRC message, for example, RRC Connection Setup. ) Message, RRC Connection Reconfiguration message, etc. may be used.
  • LTE LongTermEvolution
  • LTE-A LTE-Advanced
  • SUPER3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • FutureRadioAccess FAA
  • NewRadio NR
  • W-CDMA registered trademark
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB UltraMobile Broadband
  • IEEE802.11 Wi-Fi (registered trademark)
  • IEEE802.16 WiMAX®
  • IEEE802.20 Ultra-WideBand (UWB), Bluetooth®, and other systems that utilize appropriate systems and at least one of the next-generation systems extended based on them.
  • a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • the specific operation performed by the base station in the present disclosure may be performed by its upper node.
  • various operations performed for communication with the terminal are performed by the base station and other network nodes other than the base station (for example, MME or). It is clear that it can be done by at least one of (but not limited to, S-GW, etc.).
  • S-GW network node
  • the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information and signals can be output from the upper layer (or lower layer) to the lower layer (or upper layer).
  • Input / output may be performed via a plurality of network nodes.
  • the input / output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input / output information can be overwritten, updated, or added. The output information may be deleted. The input information may be transmitted to another device.
  • the determination may be made by a value represented by 1 bit (0 or 1), by a boolean value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).
  • the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, a website, where the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • a channel and a symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
  • the radio resource may be one indicated by an index.
  • Base Station BS
  • Wireless Base Station Wireless Base Station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (for example, three) cells (also called sectors). When a base station accommodates multiple cells, the entire base station coverage area can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio)). Communication services can also be provided by Head: RRH).
  • a base station subsystem eg, a small indoor base station (Remote Radio)
  • Communication services can also be provided by Head: RRH).
  • cell refers to a base station that provides communication services in this coverage, and part or all of the coverage area of at least one of the base station subsystems.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • Mobile stations can be used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
  • the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • at least one of a base station and a mobile station may be an Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a mobile station (user terminal, the same applies hereinafter).
  • communication between a base station and a mobile station has been replaced with communication between a plurality of mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the mobile station may have the functions of the base station.
  • words such as "up” and “down” may be read as words corresponding to inter-terminal communication (for example, "side").
  • an uplink channel, a downlink channel, and the like may be read as a side channel.
  • the mobile station in the present disclosure may be read as a base station.
  • the base station may have the functions of the mobile station.
  • the radio frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further consist of one or more slots in the time domain.
  • the subframe may have a fixed time length (eg, 1 ms) that is independent of numerology.
  • the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
  • Numerology includes, for example, SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transmission / reception.
  • SCS SubCarrier Spacing
  • TTI transmission time interval
  • At least one of a specific filtering process performed by the machine in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like may be indicated.
  • the slot may be composed of one or more symbols (Orthogonal Frequency Division Multiple Access (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain. Slots may be unit of time based on numerology.
  • OFDM Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots. Each minislot may consist of one or more symbols in the time domain.
  • the mini-slot may also be referred to as a sub-slot.
  • a minislot may consist of a smaller number of symbols than the slot.
  • PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may have different names corresponding to each.
  • one subframe may be referred to as a transmission time interval (TTI)
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI slot or one minislot
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • a base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel.8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • TTIs shorter than normal TTIs may also be referred to as shortened TTIs, short TTIs, partial TTIs (partial or fractional TTIs), shortened subframes, short subframes, minislots, subslots, slots, and the like.
  • the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
  • the short TTI (for example, shortened TTI, etc.) may be read as less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
  • the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in RB may be the same regardless of numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • One or more RBs include a physical resource block (Physical RB: PRB), a sub-carrier group (Sub-Carrier Group: SCG), a resource element group (Resource Element Group: REG), a PRB pair, an RB pair, and the like. May be called.
  • Physical RB Physical RB: PRB
  • SCG sub-carrier Group
  • REG resource element group
  • PRB pair an RB pair, and the like. May be called.
  • the resource block may be composed of one or a plurality of resource elements (ResourceElement: RE).
  • RE resource elements
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • Bandwidth Part (which may also be called partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. Good.
  • the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
  • BWP for UL
  • DL BWP BWP for DL
  • One or more BWPs may be set in one carrier for the UE.
  • At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
  • “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
  • the above-mentioned structures such as wireless frames, subframes, slots, mini slots and symbols are merely examples.
  • the number of subframes contained in a wireless frame the number of slots per subframe or wireless frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in RB.
  • the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • connection means any direct or indirect connection or connection between two or more elements, and each other. It can include the presence of one or more intermediate elements between two “connected” or “combined” elements.
  • the connection or connection between the elements may be physical, logical, or a combination thereof.
  • connection may be read as "access”.
  • the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain.
  • Electromagnetic energies with wavelengths in the microwave and light (both visible and invisible) regions, etc. can be considered to be “connected” or “coupled” to each other.
  • the reference signal can also be abbreviated as Reference Signal (RS) and may be called a pilot (Pilot) depending on the applicable standard.
  • RS Reference Signal
  • Pilot pilot
  • each of the above devices may be replaced with a "part”, a “circuit”, a “device”, or the like.
  • references to elements using designations such as “first”, “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.
  • determining and “determining” used in this disclosure may include a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). (For example, searching in a table, database or another data structure), ascertaining may be regarded as “judgment” or “decision”.
  • judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access.
  • Accessing (for example, accessing data in memory) may be regarded as "judgment” or “decision”.
  • judgment and “decision” mean that the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming”, “expecting”, “considering” and the like.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
  • Radio communication system 20 NG-RAN 100 gNB 110 O-DU 111 Communication unit 113 Acquisition unit 115 Parameter control unit 117 Parameter notification unit 120 O-RU 130 Intermediate device (FHM) 130A O-RU 131 Communication unit 133 Processing time notification unit 135 Parameter acquisition unit 137 Parameter setting unit 200 UE 1001 Processor 1002 Memory 1003 Storage 1004 Communication Device 1005 Input Device 1006 Output Device 1007 Bus

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Abstract

Un dispositif de communication constituant une première station de base installée dans un hall avant est pourvu d'une unité de commande qui détermine le paramètre utilisé pour déterminer un instant de réception de données dans un dispositif intermédiaire installé dans le hall avant, et d'une unité de transmission qui transmet le paramètre au dispositif intermédiaire.
PCT/JP2019/049051 2019-12-13 2019-12-13 Dispositif de communication WO2021117245A1 (fr)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018192333A1 (fr) * 2017-04-20 2018-10-25 Huawei Technologies Co., Ltd. Tête radio distante équipée d'une capacité de terminal d'équipement utilisateur

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WO2018192333A1 (fr) * 2017-04-20 2018-10-25 Huawei Technologies Co., Ltd. Tête radio distante équipée d'une capacité de terminal d'équipement utilisateur

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ANONYMOUS: "3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Study on Integrated Access and Backhaul; (Release 16)", 3GPP TR 38.874, no. V16.0.0, 10 January 2019 (2019-01-10), pages 11 - 12, 23-25, XP051591643 *
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