WO2023138295A1 - Procédé et appareil de compte-rendu de marge de puissance - Google Patents

Procédé et appareil de compte-rendu de marge de puissance Download PDF

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Publication number
WO2023138295A1
WO2023138295A1 PCT/CN2022/141140 CN2022141140W WO2023138295A1 WO 2023138295 A1 WO2023138295 A1 WO 2023138295A1 CN 2022141140 W CN2022141140 W CN 2022141140W WO 2023138295 A1 WO2023138295 A1 WO 2023138295A1
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WO
WIPO (PCT)
Prior art keywords
waveform
uplink
power headroom
information
uplink waveform
Prior art date
Application number
PCT/CN2022/141140
Other languages
English (en)
Chinese (zh)
Inventor
胡丹
张旭
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023138295A1 publication Critical patent/WO2023138295A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting

Definitions

  • the power headroom indicates the remaining power of a terminal device after completing the current transmission. If the power headroom is a positive value, the base station can schedule more resource blocks for the terminal device in the next scheduling. If the power headroom is a negative value, the terminal device reports that its scheduled transmission power has exceeded the allowed maximum transmission power. Wherein, the maximum transmission power of the terminal device will be affected by the backoff of the maximum transmission power of the terminal device. In other words, when the maximum transmission power backoff of the terminal equipment changes, the maximum transmission power also changes.
  • the terminal device receives first radio resource control (radio resource control, RRC) signaling.
  • RRC radio resource control
  • the first RRC signaling includes information indicating mechanism 1 or mechanism 2.
  • the first mechanism is to determine the power headroom according to the first uplink waveform and the second uplink waveform
  • the second mechanism is to determine the power headroom according to the first uplink waveform.
  • Power headroom refers to the remaining power of a terminal device after completing the current transmission.
  • the network device can configure a maximum transmission power for the terminal device, then the power headroom can be understood as the remaining power after subtracting the current transmission power from the maximum transmission power. For example, when a terminal device transmits a physical uplink shared channel (PUSCH), the transmission power is P 1 , and the maximum transmission power configured by the network device for the terminal device is P 0 , then the power headroom can be interpreted as P 0 -P 1 .
  • PUSCH physical uplink shared channel
  • the maximum transmission power the upper limit of the transmission power that the terminal device can use when transmitting a message.
  • the maximum transmission power of the terminal device may be determined by the terminal device or configured by the network device.
  • the helicopter or drone 120i in FIG. 1 can be configured as a mobile base station.
  • the terminal 120j that accesses the wireless access network 100 through 120i
  • the terminal 120i is a base station; but for the base station 110a, 120i is a terminal, that is, communication between 110a and 120i is performed through a wireless air interface protocol.
  • communication between 110a and 120i may also be performed through an interface protocol between base stations.
  • 120i is also a base station. Therefore, both the base station and the terminal can be collectively referred to as a communication device, 110a and 110b in FIG. 1 can be referred to as a communication device with a base station function, and 120a-120j in FIG. 1 can be referred to as a communication device with a terminal function.
  • P CMAX,f,c (i) is the maximum transmission power configured on the PUSCH transmission opportunity i on the carrier f of the serving cell c.
  • the maximum output power is related to factors such as the transmission capability of the terminal and the frequency band where the PUSCH is located.
  • the value of P CMAX,f,c (i) satisfies the following formula (2):
  • P-MPR c represents the maximum output power fallback set in order to ensure regulation.
  • the first uplink waveform and the second uplink waveform are different waveforms.
  • the first uplink waveform may be a DFT-s-OFDM waveform
  • the second uplink waveform may be a CP-OFDM waveform.
  • the first uplink waveform may be a CP-OFDM waveform
  • the second uplink waveform may be a DFT-s-OFDM waveform.
  • the first information may directly indicate the first uplink waveform.
  • the DCI may include an indication field indicating the uplink waveform
  • the indication field may directly indicate the first uplink waveform.
  • the bit width of the indication field of the uplink waveform in DCI or MAC CE is 1 bit, and when the value of the indication field is 1, the terminal can use the CP-OFDM symbol to send the uplink signal; when the value of the indication field of the uplink waveform in DCI or MAC CE is 0, the terminal can use the DFT-s-OFDM waveform to send the uplink signal.
  • the reverse is also possible.
  • the terminal may determine the first maximum transmission power according to the MPR corresponding to the first uplink waveform, that is, PCMAX,f,c (i) in formula (1). For example, the terminal may determine the first maximum transmission power according to the MPR corresponding to the first uplink waveform determined in Table 2 and/or Table 3, and then according to formula (2) to formula (4). Similarly, the terminal may determine the second maximum transmission power according to the MPR corresponding to the second uplink waveform. Wherein, the value of the MPR corresponding to the second uplink waveform matches the value of the MPR corresponding to the first uplink waveform.
  • DFT-s-OFDM waveform can obtain a higher upper limit of maximum transmission power value. Therefore, the value range of the maximum transmission power determined according to the DFT-s-OFDM waveform is smaller.
  • the protocol is predefined or the base station instructs the terminal to determine the power headroom according to the CP-OFDM waveform. Then the terminal can determine the power headroom according to the CP-OFDM waveform, and send the power headroom to the base station.

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

Abstract

La présente demande concerne le domaine technique des communications sans fil. La présente invention concerne un procédé et un appareil de rapport de marge de puissance. Le procédé comprend les étapes suivantes : un dispositif terminal détermine une marge de puissance selon une première forme d'onde de liaison montante et/ou une deuxième forme d'onde de liaison montante, la première forme d'onde de liaison montante étant une forme d'onde qui est indiquée par des premières informations, la deuxième forme d'onde de liaison montante étant une forme d'onde qui est indiquée par des deuxième informations, le temps effectif des deuxième informations étant ultérieur au temps effectif des premières informations, et la première forme d'onde de liaison montante étant différente de la deuxième forme d'onde de liaison montante ; et le dispositif terminal envoie un signal de liaison montante, la forme d'onde du signal de liaison montante étant la deuxième forme d'onde de liaison montante, et le signal de liaison montante transportant des informations de la marge de puissance. Sur la base de la solution, lorsqu'une commutation de forme d'onde se produit dans un terminal, une marge de puissance peut être déterminée en fonction d'une première forme d'onde de liaison montante et/ou d'une deuxième forme d'onde de liaison montante, et la marge de puissance peut être rapportée. De cette manière, la puissance de transmission maximale, qui est utilisée par la marge de puissance envoyée par le terminal, peut être alignée avec une station de base.
PCT/CN2022/141140 2022-01-18 2022-12-22 Procédé et appareil de compte-rendu de marge de puissance WO2023138295A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210055234.0 2022-01-18
CN202210055234.0A CN116506930A (zh) 2022-01-18 2022-01-18 一种功率余量上报方法和装置

Publications (1)

Publication Number Publication Date
WO2023138295A1 true WO2023138295A1 (fr) 2023-07-27

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PCT/CN2022/141140 WO2023138295A1 (fr) 2022-01-18 2022-12-22 Procédé et appareil de compte-rendu de marge de puissance

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CN (1) CN116506930A (fr)
WO (1) WO2023138295A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632891A (zh) * 2017-03-24 2018-10-09 华为技术有限公司 一种信息传输方法和装置
US20180324715A1 (en) * 2017-05-04 2018-11-08 Samsung Electronics Co., Ltd. Method and apparatus for transmitting power headroom information in a communication system
CN109803363A (zh) * 2017-11-17 2019-05-24 华为技术有限公司 通信方法、通信装置和系统
CN110536400A (zh) * 2018-05-25 2019-12-03 华为技术有限公司 一种发送功率余量报告的方法及装置
CN111867090A (zh) * 2019-04-30 2020-10-30 华为技术有限公司 一种功率余量的确定方法及装置
CN112867129A (zh) * 2019-11-08 2021-05-28 荣耀终端有限公司 功率余量上报发送方法和装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108632891A (zh) * 2017-03-24 2018-10-09 华为技术有限公司 一种信息传输方法和装置
US20180324715A1 (en) * 2017-05-04 2018-11-08 Samsung Electronics Co., Ltd. Method and apparatus for transmitting power headroom information in a communication system
CN109803363A (zh) * 2017-11-17 2019-05-24 华为技术有限公司 通信方法、通信装置和系统
CN110536400A (zh) * 2018-05-25 2019-12-03 华为技术有限公司 一种发送功率余量报告的方法及装置
CN111867090A (zh) * 2019-04-30 2020-10-30 华为技术有限公司 一种功率余量的确定方法及装置
CN112867129A (zh) * 2019-11-08 2021-05-28 荣耀终端有限公司 功率余量上报发送方法和装置

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CN116506930A (zh) 2023-07-28

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