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WO2018145595A1 - Procédé et dispositif de commande d'amplificateur de puissance d'unité radio distante - Google Patents

Procédé et dispositif de commande d'amplificateur de puissance d'unité radio distante Download PDF

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Publication number
WO2018145595A1
WO2018145595A1 PCT/CN2018/074790 CN2018074790W WO2018145595A1 WO 2018145595 A1 WO2018145595 A1 WO 2018145595A1 CN 2018074790 W CN2018074790 W CN 2018074790W WO 2018145595 A1 WO2018145595 A1 WO 2018145595A1
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WO
WIPO (PCT)
Prior art keywords
power amplifier
time domain
control signal
domain data
data
Prior art date
Application number
PCT/CN2018/074790
Other languages
English (en)
Chinese (zh)
Inventor
李勋
周敏
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to JP2019542664A priority Critical patent/JP6915070B2/ja
Publication of WO2018145595A1 publication Critical patent/WO2018145595A1/fr

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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
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • 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
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • 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
    • H04W88/085—Access point devices with remote components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and apparatus for controlling a power amplifier of a radio remote unit (RRU).
  • RRU radio remote unit
  • the method and apparatus for controlling a power amplifier of a radio remote unit in the case of a radio remote unit in a communication system based on OFDM transmission, in a case where a symbol configuration information of a subframe is not required to be transmitted by a baseband, the radio remote unit determines the idle state of the link subframe symbol and controls the switching of the power amplifier.
  • a method for controlling a power amplifier of a radio remote unit comprising: a radio remote unit detecting time domain data from a baseband processing unit, and determining whether a user exists in the time domain data. And the radio remote unit controls the power amplifier of the radio remote unit to be turned on or off according to the determination result of whether the user data exists in the time domain data.
  • a storage medium storing a program for implementing a control method of a power amplifier of the above-described radio remote unit.
  • FIG. 1 is a flow chart of a symbol-based power saving scheme according to prior art
  • FIG. 2 is a flowchart of a method of controlling a power amplifier of a radio remote unit according to an embodiment of the present invention
  • FIG. 3 is a block diagram of a control device of a power amplifier of a radio remote unit according to an embodiment of the present invention
  • FIG. 5 is a flowchart of an energy saving scheme based on data detection according to an embodiment of the present invention.
  • FIG. 6 is a structural diagram of implementing an energy saving scheme based on FDD-LTE according to an embodiment of the present invention
  • FIG. 7 is a flowchart of implementing an energy saving scheme based on FDD-LTE according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of delay calculation of an energy-saving control signal based on FDD-LTE according to an embodiment of the present invention.
  • FIG. 1 is a flow chart of a symbol based power saving scheme in accordance with the prior art.
  • the symbol-based power saving scheme according to the prior art may include steps 101 to 104.
  • the BBU sends the baseband data and control information generated in step 102 to a Radio Remote Unit (RRU).
  • RRU Radio Remote Unit
  • the RRU receives the sub-frame symbol data and the useful symbol configuration bitmap information and generates a power amplifier control signal to control the switching of the power amplifier.
  • FIG. 2 is a flow chart of a method of controlling a power amplifier of an RRU according to an embodiment of the present invention.
  • the RRU detects time domain data from the baseband processing unit and determines if user data is present in the time domain data.
  • Step 101 may include: detecting, by the RRU, the time domain data, when detecting that the time length of the time domain data continues to be “0” reaches the target value, determining that the user data does not exist in the time domain data, otherwise determining that the time domain data exists User data.
  • the target value may be less than the length of time of one subframe symbol.
  • the RRU controls the power amplifier of the RRU to be turned “on” or “off” based on the determination of whether there is user data in the time domain data.
  • Step 202 may include the RRU generating an energy saving control signal for turning the power amplifier on or off according to a determination result of whether the user data exists in the time domain data, and controlling the power amplifier to be turned on or off according to the power saving control signal.
  • the RRU buffers the power saving control signal for a preset length of time and then performs a logical AND operation with the conventional control signal to obtain a power amplifier control signal, and controls the power amplifier to be turned on or off according to the power amplifier control signal.
  • the conventional control signal is a normally open signal
  • the conventional control signal is a signal associated with the time slot in which the data is received or transmitted. That is to say, in the data transmission time slot of the TDD system, the RRU's conventional control signal is an open signal, and in the data receiving time slot of the TDD system, the RRU's conventional control signal is a turn-off signal.
  • the RRU control method can implement energy saving and consumption reduction.
  • the mechanism of energy saving and consumption reduction is that the RRU analyzes the time domain data sent by the baseband, determines whether there is user data in the link, and generates corresponding power amplifier control signals. Turn off the power amplifier when there is no user data, so as to save energy and reduce consumption.
  • Step 201 to step 202 can be performed.
  • the storage medium may be a ROM/RAM, a magnetic disk, an optical disk, or the like.
  • FIG. 3 is a block diagram of a control device of a power amplifier of an RRU according to an embodiment of the present invention.
  • a control device of a power amplifier of an RRU may be disposed in an RRU, and the device may include a detection module 31 and a control module 32.
  • the detection module 31 is arranged to detect time domain data from the baseband processing unit and determine if user data is present in the time domain data. According to the embodiment of the present invention, the detecting module 31 detects the time domain data. When the time length of the time domain data continues to be “0” reaches the target value, it is determined that the user data does not exist in the time domain data, otherwise the time domain is determined. User data exists in the data.
  • the target value may be less than the length of time of one subframe symbol.
  • the control module 32 is arranged to control the power amplifier of the RRU to be turned on or off based on the determination of whether there is user data in the time domain data. According to an embodiment of the present invention, the control module 32 generates an energy saving control signal for turning on or off the power amplifier according to the determination result of whether or not the user data exists in the time domain data, and controls the power amplifier to be turned on or off according to the power saving control signal. According to an embodiment of the invention, the control module 32 buffers the energy-saving control signal for a preset time length and then performs a logical AND operation with the conventional control signal to obtain a power amplifier control signal, and controls the power amplifier to be turned on or off according to the power amplifier control signal. For FDD systems, the conventional control signal is a normally open signal; for a TDD system, the conventional control signal is a signal associated with the time slot in which the data is received or transmitted.
  • the working process of the control device of the RRU is as follows: when the detection module 31 detects that the time length of the time domain data continues to be “0” and reaches the target value, determining that there is no user data in the time domain data, the control module 32 An energy-saving control signal for turning off the power amplifier is generated based on the determination result, and the energy-saving control signal is subjected to a corresponding delay and then logically ANDed with the conventional control signal to obtain a power amplifier control signal. The power amplifier control signal is sent to the power amplifier to turn off the power amplifier.
  • the control module 32 After the power amplifier is turned off, when the detection module 31 detects non-"0" data, determining that user data exists in the time domain data, the control module 32 generates an energy saving control signal for turning on the power amplifier based on the determination result, and The energy-saving control signal performs a corresponding delay and then performs a logical AND operation with the conventional control signal to obtain a power amplifier control signal.
  • the power amplifier control signal is sent to the power amplifier to turn on the power amplifier.
  • the energy saving solution of the inventive concept includes the following two parts:
  • the energy saving scheme according to the present invention adopts an energy saving scheme based on data detection, and the RRU independently detects the time domain data, and then analyzes and generates the energy saving control signal by itself.
  • the time length in which the time domain data continues to be "0" is detected to reach the target value (ie, the detection period)
  • an energy saving control signal for turning off the power amplifier is generated; when the time domain data is not detected to be "0", the immediate opening is generated.
  • Energy-saving control signal for the power amplifier is used to control signal.
  • Figure 4 is a comparison of technical effects of two energy saving schemes based on symbols and data detection.
  • both the symbol-based and data-based detection-based power-saving schemes generate switching control on 7 OFDM symbols (Symbol1 to Symbol7) in one slot of a Long Term Evolution (LTE) signal.
  • LTE Long Term Evolution
  • the turn-off signal is generated in units of the time length of one symbol, so the symbol-based power amplifier control signal shown in FIG. 4 is in the three symbols of Symbol3, Symbol4, and Symbol6.
  • the power amplifier is turned on for the entire time range and the power amplifier is turned off for the time range of the other symbols.
  • Fig. 4 shows a case where the power amplifier is turned on when the power amplifier control signal is at a high level and the power amplifier is turned off when the power amplifier control signal is at a low level.
  • the shutdown signal is generated according to whether valid data (ie, user data) is detected, so the power amplifier control signal generated based on the data detection shown in FIG. 4 is only in Symbol3.
  • the power amplifier is turned on during the time period in which the three symbols of Symbol4, Symbol4, and Symbol6 have valid data, and the power amplifier is turned off in other time periods (including the time period of non-effect data in the three symbols of Symbol3, Symbol4, and Symbol6).
  • the power saving scheme according to the inventive concept is more precise in controlling the power amplifier, and the power amplifier is more efficient.
  • FIG. 5 is a flow chart of an energy saving scheme based on data detection according to an embodiment of the present invention.
  • the energy saving scheme based on the data detection in the FDD-LTE standard communication system includes steps 501 to 504.
  • the BBU scheduling subsystem initiates a real-time detection process to detect the current number of active users.
  • the BBU concentrates the currently active user on the partially useful user symbols according to the detection result, and simultaneously generates the scheduled subframe symbol data (ie, baseband data).
  • the BBU delivers the baseband data generated in step 502 to the RRU.
  • the RRU receives the time domain data delivered by the BBU and analyzes the data to control the switch of the power amplifier.
  • the implementation process of the energy saving mechanism in the embodiment of the present invention is simpler, and the interaction between the BBU and the RRU is not required, and the control data transmission between the BBU and the RRU is reduced. Higher reliability in systems with complex structures.
  • an energy saving module ie, a power amplifier (PA) energy saving control module
  • the module analyzes the time domain data received by the RRU and generates a power amplifier control signal.
  • PA power amplifier
  • FIG. 6 is a structural diagram of implementing an energy saving scheme based on FDD-LTE according to an embodiment of the present invention.
  • the downlink data after monitoring and scheduling by the BBU module is simultaneously sent to the IF link of the RRU and the PA energy-saving control module.
  • One link data is sent to the PA via the intermediate frequency link module and the radio frequency link module, and the other link data enters the PA energy saving control module to generate a PA control signal (ie, an energy saving control signal), and a control signal generated by the PA conventional control module. (ie, the conventional control signal) performs a logical AND operation, and then performs a switching control on the PA.
  • the PA power saving control module, the PA conventional control module, and the logic and module in FIG. 6 can collectively implement the functions of the apparatus shown in FIG.
  • the energy-saving scheme based on FDD-LTE may include steps 701 to 706.
  • the BBU scheduling subsystem starts a real-time detection process to detect the current number of active users.
  • the BBU concentrates the currently active users on the partially useful user symbols according to the detection result to form the scheduled baseband data.
  • the RRU sends the received baseband data to the PA energy saving control module, and the PA energy saving control module analyzes the time domain data, and reaches the target value when detecting that the time domain data continues to be “0” (ie, detecting At the time of the cycle, an energy-saving control signal for turning off the power amplifier is generated; when it is detected that the time domain data is not "0", an energy-saving control signal for turning on the power amplifier is immediately generated.
  • the PA power saving control module calculates a delay required to generate the power amplifier control signal (ie, a delay required to perform the power saving control signal), and sends the generated power saving control signal to the buffer module for corresponding delay and output.
  • a power amplifier control signal is generated.
  • the power amplifier control signal output from the PA power saving control module is logically ANDed with the control signal output by the PA conventional control module (ie, the conventional control signal) to generate a final power amplifier control signal.
  • control signal output by the PA conventional control module is in a fully open state.
  • step 706 the final power amplifier control signal generated in step 705 is sent to the PA to control the switching of the PA.
  • FIG. 8 is a block diagram of a FDD-LTE based control module in accordance with an embodiment of the present invention.
  • the FDD-LTE-based control module 32 may include a control signal generation sub-module and a control signal delay sub-module.
  • the control signal generation sub-module analyzes the input time domain data signal, and when detecting that the time domain data continues to be “0” for a time to reach the target value, generating an energy-saving control signal for turning off the power amplifier, when the detected data is not “ When 0", the energy-saving control signal for turning on the power amplifier is immediately generated.
  • the duration of the detection can be the detection period, and its value can be flexibly configured through registers.
  • the control signal delay sub-module delays the generated energy-saving control signal for a certain time to successfully release the control signal, so that the generated power amplifier control signal and the data can reach the PA at the same time, preventing the erroneous shutdown signal.
  • a certain delay is required, so the power amplifier needs to be turned on and turned off in advance.
  • FIG. 9 is a schematic diagram of delay calculation of an energy-saving control signal based on FDD-LTE according to an embodiment of the present invention.
  • a switching signal for controlling the power amplifier is generated according to the data detection scheme, wherein T1 represents a delay of the baseband data reaching the PA through the logical link and the RF link, T2 represents a detection period of the data, and T3 represents an energy-saving control signal.
  • the delay time, T4 represents the length of time that the power amplifier is turned off, and T5 represents the length of time that the power amplifier is turned on earlier.
  • the delay of the power-saving control signal is equal to the data link delay minus half of the data detection period, so that the length of the power amplifier being turned on and the off-close is half of the data detection period, and the data is not guaranteed. Was turned off by mistake, namely:
  • T2 is equal to the sum of T4 and T5, that is, the detection period of the data is related to the advance opening of the power amplifier and the length of the hysteresis off time. Taking into account the time taken to turn the power amplifier on and off when setting the detection period, the detection period needs to be greater than or equal to the sum of the two, and less than the length of time of one symbol.
  • a register controllable variable can also be designed to adjust the length of time for the power amplifier to be opened early and the closed to be closed, that is:
  • T6 represents the adjusted power amplifier lag off time length
  • T7 represents the adjusted power amplifier early open time length
  • ⁇ represents a controllable time adjustment amount
  • the energy saving and consumption reduction scheme described in the embodiments of the present invention is applicable to all communication systems based on OFDM transmission, including but not limited to LTE and WiMAX.
  • the RRU does not need to send the useful symbol configuration bitmap information to the BBU, and can analyze the link data to determine the user status and control the power amplifier to be turned on and off, thereby decoupling from other network elements to improve reliability.
  • the control cycle can be flexibly controlled to achieve smaller power amplifier control than the symbol level granularity to achieve higher efficiency and energy saving.

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

Abstract

L'invention concerne un procédé et un dispositif de commande d'amplificateur de puissance pour une unité radio distante. Le procédé comprend les étapes suivantes : l'unité radio distante détecte des données de domaine temporel qui proviennent d'une unité de traitement de bande de base, et détermine s'il existe ou non des données utilisateur dans les données de domaine temporel ; et l'unité radio distante commande à un amplificateur de puissance de l'unité radio distante de s'allumer ou de s'éteindre selon que le résultat de détermination indique qu'il existe ou non des données utilisateur dans les données de domaine temporel.
PCT/CN2018/074790 2017-02-07 2018-01-31 Procédé et dispositif de commande d'amplificateur de puissance d'unité radio distante WO2018145595A1 (fr)

Priority Applications (1)

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JP2019542664A JP6915070B2 (ja) 2017-02-07 2018-01-31 無線遠隔手段の電力増幅器の制御方法及び装置

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CN201710067420.5A CN108401278A (zh) 2017-02-07 2017-02-07 一种射频拉远单元节能降耗的方法及装置
CN201710067420.5 2017-02-07

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CN113873618A (zh) * 2020-06-30 2021-12-31 中国移动通信集团吉林有限公司 一种基于物联网的基站节能控制方法及其系统
WO2022066068A1 (fr) * 2020-09-22 2022-03-31 Telefonaktiebolaget Lm Ericsson (Publ) Planification sensible au matériel radio
WO2024001926A1 (fr) * 2022-06-27 2024-01-04 中兴通讯股份有限公司 Appareil d'économie d'énergie, et dispositif de communication et son procédé de fonctionnement

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CN111601369B (zh) * 2019-02-21 2021-08-27 大唐移动通信设备有限公司 一种节能控制系统及方法
CN111491391B (zh) * 2020-04-09 2022-04-01 京信网络系统股份有限公司 小区调度方法、电子设备、存储介质及分布式天线系统
CN113890573A (zh) * 2020-06-17 2022-01-04 中兴通讯股份有限公司 射频单元功率控制方法、电子设备及存储介质
CN112492667B (zh) * 2020-10-22 2022-11-11 中通服咨询设计研究院有限公司 一种基于智慧基站的数据处理方法、系统及控制器
CN113411872B (zh) * 2021-06-15 2022-12-27 深圳国人无线通信有限公司 一种基于cpri协议的节能控制方法及基站系统
CN113411871B (zh) * 2021-06-15 2022-12-27 深圳国人无线通信有限公司 一种基于cpri协议的节能控制方法及基站系统
CN113411870B (zh) * 2021-06-15 2022-05-17 深圳国人无线通信有限公司 一种基于cpri协议的节能控制方法及基站系统
CN117479274A (zh) * 2022-07-22 2024-01-30 中兴通讯股份有限公司 节能方法、系统、设备及存储介质
CN115941071B (zh) * 2022-11-23 2025-05-23 四川恒湾科技有限公司 符号关断方法、装置、o-ru和电子设备及存储介质

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CN113873618A (zh) * 2020-06-30 2021-12-31 中国移动通信集团吉林有限公司 一种基于物联网的基站节能控制方法及其系统
CN113873618B (zh) * 2020-06-30 2023-11-03 中国移动通信集团吉林有限公司 一种基于物联网的基站节能控制方法及其系统
WO2022066068A1 (fr) * 2020-09-22 2022-03-31 Telefonaktiebolaget Lm Ericsson (Publ) Planification sensible au matériel radio
WO2024001926A1 (fr) * 2022-06-27 2024-01-04 中兴通讯股份有限公司 Appareil d'économie d'énergie, et dispositif de communication et son procédé de fonctionnement

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