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WO2007079637A1 - Procédé de protection de l'amplificateur de puissance de la bs et dispositif associé - Google Patents

Procédé de protection de l'amplificateur de puissance de la bs et dispositif associé Download PDF

Info

Publication number
WO2007079637A1
WO2007079637A1 PCT/CN2006/002875 CN2006002875W WO2007079637A1 WO 2007079637 A1 WO2007079637 A1 WO 2007079637A1 CN 2006002875 W CN2006002875 W CN 2006002875W WO 2007079637 A1 WO2007079637 A1 WO 2007079637A1
Authority
WO
WIPO (PCT)
Prior art keywords
power amplifier
base station
power
congestion control
common channel
Prior art date
Application number
PCT/CN2006/002875
Other languages
English (en)
Chinese (zh)
Inventor
Haiyan Hou
Original Assignee
Huawei Technologies Co., Ltd.
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 Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2007079637A1 publication Critical patent/WO2007079637A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H04W52/346—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading distributing total power among users or channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/52—Transmission power control [TPC] using AGC [Automatic Gain Control] circuits or amplifiers

Definitions

  • the present invention relates to a base station technology, and more particularly to a method and apparatus for base station power amplifier protection.
  • the base station RF power amplifier capability is a factor that affects the cell capacity and coverage in the communication system.
  • the power resources of the cell are comprehensively configured according to factors such as the base station power amplifier capability and the wireless environment.
  • the power amplifier capability may change, such as a base station.
  • NodeB When the RF power amplifier is over temperature, in order to avoid damage to the equipment, it is necessary to protect the base station power amplifier.
  • the protection of the base station power amplifier is directly limited. For example, when the base station power amplifier is detected to be over temperature (that is, the base station power amplifier temperature exceeds a predetermined threshold), the base station power amplifier is generally limited to be protected, and the base station can be implemented. The protection of the power amplifier, but it will have a great impact on the service, because when this method is adopted, the cell covered by the base station does not exist, and normal communication will be interrupted.
  • the technical problem to be solved by the present invention is to provide a method and a device for protecting a base station power amplifier, so as to reduce the impact of the base station power amplifier protection on the service, and ensure that normal communication is not interrupted.
  • the present invention provides a method for base station power amplifier protection, including the steps of: determining triggering base station power amplifier protection;
  • the base station power amplifier protection is implemented by limiting the transmit power of the non-common channel in the base station to reduce the power of the base station power amplifier.
  • the present invention further provides a device for protecting a base station power amplifier, including:
  • the power amplifier protection trigger determining unit is configured to determine whether to trigger the base station power amplifier protection, and if yes, Sending an indication of limiting the transmit power of the non-common channel;
  • the power amplifier protection execution unit After receiving the indication of the power amplifier protection triggering judgment unit, the power amplifier protection execution unit limits the transmission power of the non-common channel to reduce the base station power amplifier power to achieve base station power amplifier protection.
  • the present invention determines whether to trigger the base station power amplifier protection by detecting the power amplifier temperature of the base station, and if the power amplifier temperature is too high (beyond a predetermined threshold value), by limiting in the base station (such as closing and reducing)
  • the transmission power of the non-common channel is used to reduce the power of the base station power amplifier, thereby realizing the base station power amplifier protection, and ensuring that the normal communication of the cell is not interrupted.
  • FIG. 1 is a main flow chart of a method for implementing base station power amplifier protection according to the present invention
  • 2 is a flow chart of restricting non-common channel transmission power by using congestion control in the method of the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for protecting a base station power amplifier according to the present invention.
  • the core of the invention is to limit (reduce or close) the transmit power of the non-common channel in the base station after the base station power amplifier protection is triggered, so as to reduce the power of the base station power amplifier and realize the protection of the base station power amplifier.
  • the solution of the present invention can ensure that the coverage of the small area is unchanged by limiting the transmission power of the non-common channel, thereby ensuring that normal communication is not interrupted.
  • FIG. 1 is a flowchart of a method for implementing base station power amplifier protection according to the present invention.
  • the method includes:
  • Step S11 determining triggering base station power amplifier protection
  • Step S12 Limiting the transmit power of the non-common channel in the base station, so as to reduce the power of the base station power amplifier to achieve base station power amplifier protection.
  • the base station power amplifier capability may change. If the air conditioner suddenly fails and the base station (NodeB) power amplifier temperature exceeds a predetermined threshold (ie, over temperature), measures need to be taken to protect the base station power amplifier. That is, When it is detected that the power amplifier temperature of the base station exceeds the rated value, an over temperature alarm is generated, and the base station power amplifier protection is triggered.
  • a predetermined threshold ie, over temperature
  • the base station power amplifier protection is actually triggered, for example: The output power of the cell is too large, and the design of the power amplifier is exceeded. Seeking, since it does not involve the essence of the present invention, it will not be repeated here.
  • the invention can modify the transmission power of the non-common channel to implement the base station power amplifier protection by modifying the congestion control manner, and can also implement the power amplifier protection of the base station by other methods.
  • the following is an example of this.
  • FIG. 2 is a flowchart of restricting transmission power of a non-common channel by using congestion control in the method according to the present invention.
  • the specific implementation process is as follows:
  • Step T11 If the base station power amplifier is over temperature, modify the congestion control threshold to a predetermined value, and enter the congestion control startup state;
  • the congestion control threshold is a variable in the software program that can be directly modified by the software to a predetermined value. Since the congestion control itself is to control the power amplifier input signal and reduce the congestion control threshold, it is actually limiting the power amplifier input signal, and the predetermined value is not greater than the congestion control threshold value under normal conditions (for example, the congestion control threshold is 50 under normal conditions). %, but not limited to this, it can also be 60%, 70%, etc. of the congestion threshold); or it can be a lower value (such as 30%, etc.), so that the cell can enter the congestion control startup state, that is, When the transmit power of the cell has not reached the congestion threshold under normal conditions, the cell is caused to enter a congestion control startup state;
  • Step T12 After the base station enters the congestion control state, the non-common channel transmission power is restricted by the congestion control, and the common channel transmission power is kept unchanged.
  • each channel increases or decreases the transmit power of the channel according to the requirements of the power control.
  • the non-common channel may be required to be reduced according to the power control requirement.
  • the channel transmission power when the power control requires an increase in the transmission power, can maintain the power of the common channel unchanged. Therefore, the purpose of reducing the power of the base station power amplifier can be achieved while ensuring that the cell coverage is unchanged.
  • the present invention can control the power amplifier power of a base station by reducing or turning off the transmit power of a non-common channel such as a dedicated channel.
  • a non-common channel such as a dedicated channel.
  • the specific process is: when the actual transmit power of the cell exceeds the maximum transmit power threshold of the cell, the NodeB reduces or turns off the service rate of one or more non-common channels (such as a dedicated channel), so as to reduce the transmit power of the cell.
  • Base station amplifier protection are some examples of reducing or closing the service rate of a non-common channel: When the temperature of the base station rises to a certain value, the congestion threshold is changed to 50%. At this time, the congestion algorithm is started, and it is determined whether the transmission power of the cell exceeds the modified congestion threshold.
  • the transmission power of the non-common channel is reduced. Until the transmit power of the cell is less than the modified congestion threshold. During the control of the congestion threshold, the transmit power of the non-common channel can only be decreased or maintained, but does not rise. If it rises, the transmit power of the cell also increases, which in turn causes the base station temperature to rise. After the process ends, if the transmit power of the cell is lower than the congestion threshold, the congestion control algorithm is not activated, and the transmit power of the non-common channel can be raised or maintained.
  • the congestion threshold is changed to 50%.
  • the congestion algorithm determines whether the cell transmit power exceeds the modified congestion threshold. If it exceeds, it closes according to the priority from low to high. The transmit power of the non-common channel until the cell transmit power is less than the modified congestion threshold.
  • some services use a data-free transmission format for channel coding and radio frame mapping, so that the service consumes little transmission power due to lack of data when transmitting in the air.
  • the dedicated channel there may be many criteria, such as lowering or turning off the lower priority user according to the user priority; and first reducing or turning off the power of the power maximum channel and the like.
  • the congestion control mode may be used to limit the transmission power of the non-common channel in the base station, for example, by reducing or turning off (may be reduced or turned off according to the priority of the user) one or more non-common channels.
  • the transmit power keeps the transmit power of the common channel unchanged. This ensures that the downlink transmit power does not exceed the power amplifier capability, and the cell coverage is guaranteed to be unchanged, thereby ensuring normal communication is not interrupted.
  • FIG. 3 is a schematic structural diagram of an apparatus for protecting a base station power amplifier according to the present invention.
  • the apparatus includes: a power amplifier protection trigger determination unit 31 and a power amplifier protection execution unit 32.
  • the power amplifier protection triggering determining unit 31 is configured to determine whether to trigger the base station power amplifier protection, and if yes, send an indication for limiting the non-common channel transmission power; the power amplifier protection executing unit 32 receives the power amplifier protection trigger determining unit 31 After the indication, the transmission power of the non-common channel is limited, so as to reduce the base station power amplifier power to achieve base station power amplifier protection.
  • the power amplifier protection triggering determining unit 31 mainly includes: a detecting determining subunit 311, configured to detect whether the base station power amplifier temperature exceeds a predetermined threshold; the indicating subunit 312, according to the result of the detecting and determining, starting the base station power amplifier protection, and transmitting the restricted non-common channel An indication of the transmit power. Also After the detection determining subunit detects that the base station power amplifier temperature exceeds a predetermined threshold, transmitting an indication of limiting the transmission power of the non-common channel.
  • the power amplifier protection execution unit 32 includes: a modification subunit 321 connected to the indication subunit 312, configured to change the congestion control threshold to a predetermined value, so that the base station enters a congestion control startup state; the congestion control subunit 322, and the modification subunit 321 Connected, used to keep the common channel transmit power unchanged after the base station enters congestion control, and limit the non-common channel transmit power.
  • the power amplifier protection execution unit 32 may limit the transmission power of the non-common channel in the base station by using a congestion control manner.

Landscapes

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

Abstract

L'invention concerne un procédé permettant de protéger l'amplificateur de puissance de la BS qui consiste notamment à déterminer le déclenchement de la protection de cet amplificateur de puissance ; et à limiter la puissance de transmission des canaux non communs dans la BS, de façon à réduire la puissance de l'amplificateur de puissance dans la BS, ce qui permet de réaliser la protection de l'amplificateur de puissance de la BS. En ce qui concerne la limitation de la puissance de transmission des canaux non communs, on peut la mettre en oeuvre en modifiant le seuil de contrôle d'encombrement, en démarrant le contrôle d'encombrement, en limitant la puissance des canaux non communs, et en faisant en sorte que la puissance de transmission n'excède pas celle de l'amplificateur de puissance. Le dispositif comporte une unité de déclenchement de la protection de l'amplificateur de puissance, qui permet d'estimer s'il y a lieu de la déclencher , dans l'affirmative, d'envoyer une indication de limitation de la puissance de transmission des canaux non communs; une unité d'exécution de la protection de l'amplificateur de puissance, qui permet de limiter la puissance de transmission des canaux non communs après réception de l'indication provenant de l'unité de déclenchement de la protection de l'amplificateur de puissance, de façon à réduire la puissance de l'amplificateur de puissance de la BS et à réaliser la protection de son amplificateur de puissance. On pourrait ainsi réduire l'effet de la protection de l'amplificateur de puissance de la BS sur le trafic, et assurer le maintien de la communication normale ininterrompue.
PCT/CN2006/002875 2006-01-10 2006-10-26 Procédé de protection de l'amplificateur de puissance de la bs et dispositif associé WO2007079637A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2006100327790A CN1859662A (zh) 2006-01-10 2006-01-10 基站功放保护方法及装置
CN200610032779.0 2006-01-10

Publications (1)

Publication Number Publication Date
WO2007079637A1 true WO2007079637A1 (fr) 2007-07-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2006/002875 WO2007079637A1 (fr) 2006-01-10 2006-10-26 Procédé de protection de l'amplificateur de puissance de la bs et dispositif associé

Country Status (2)

Country Link
CN (1) CN1859662A (fr)
WO (1) WO2007079637A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102291710B (zh) * 2010-06-21 2016-06-22 中兴通讯股份有限公司 第三代通信网络中一种业务异常网络侧挽救方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4870698A (en) * 1986-10-29 1989-09-26 Oki Electric Industry Co., Ltd. Output power control circuit for a mobile radio apparatus
CN1366391A (zh) * 2001-01-18 2002-08-28 株式会社Ntt都科摩 发送功率控制装置与发送功率控制方法以及移动台与基地台
CN1455994A (zh) * 2001-01-12 2003-11-12 松下电器产业株式会社 传输设备和传输方法
WO2004013990A1 (fr) * 2002-08-05 2004-02-12 Fujitsu Limited Dispositif de commande de puissance d'emission et procede de commande de puissance d'emission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4870698A (en) * 1986-10-29 1989-09-26 Oki Electric Industry Co., Ltd. Output power control circuit for a mobile radio apparatus
CN1455994A (zh) * 2001-01-12 2003-11-12 松下电器产业株式会社 传输设备和传输方法
CN1366391A (zh) * 2001-01-18 2002-08-28 株式会社Ntt都科摩 发送功率控制装置与发送功率控制方法以及移动台与基地台
WO2004013990A1 (fr) * 2002-08-05 2004-02-12 Fujitsu Limited Dispositif de commande de puissance d'emission et procede de commande de puissance d'emission

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CN1859662A (zh) 2006-11-08

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