WO2009079956A1 - Procédé et système de détection de source de brouillage de liaison descendante, et dispositif associé - Google Patents

Procédé et système de détection de source de brouillage de liaison descendante, et dispositif associé Download PDF

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Publication number
WO2009079956A1
WO2009079956A1 PCT/CN2008/073290 CN2008073290W WO2009079956A1 WO 2009079956 A1 WO2009079956 A1 WO 2009079956A1 CN 2008073290 W CN2008073290 W CN 2008073290W WO 2009079956 A1 WO2009079956 A1 WO 2009079956A1
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WO
WIPO (PCT)
Prior art keywords
base station
terminal
power
interference source
interference
Prior art date
Application number
PCT/CN2008/073290
Other languages
English (en)
Chinese (zh)
Inventor
Shulan Feng
Jinnan Liu
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 WO2009079956A1 publication Critical patent/WO2009079956A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing 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

Definitions

  • the embodiments of the present invention relate to the field of communications technologies, and in particular, to a method, system, and apparatus for detecting a downlink interference source. Background technique
  • the system needs to detect and judge the interference source in real time. And negotiate with interference sources to avoid interference and ensure communication quality.
  • the prior art divides the interference relationship into downlink interference and uplink interference.
  • the downlink interference refers to the terminal detecting downlink interference from the neighbor system
  • the uplink interference refers to the uplink interference detected by the base station to the terminal from the neighbor system.
  • the prior art is used in a preset time slot, which is called a downlink coexistence message interval or a downlink coexistence signaling interval
  • the base station transmits the base station ID (Identifier) and other information
  • a signal of base station IP (Internet Protocol) address information is called downlink coexistence message or signaling, and if the terminal can receive signals from other system base stations in these predetermined time slots, and obtain the included therein,
  • the base station ID, and/or base station IP address information, and/or the IP address of the proxy Proxy of the base station the terminal can determine that it is subject to downlink interference from the detected base station.
  • the prior art In order to correctly detect and judge the uplink interference source, the prior art is used in a preset time slot, which is called an uplink coexistence message interval, and the terminal transmits the terminal ID and the terminal service base station ID and other information, such as base station IP address information.
  • the signal is called an uplink coexistence message. If the base station can detect signals from other system terminals at these uplink coexistence message intervals and obtain the information contained therein, the base station can judge that it is subject to the terminal from the received signal. Uplink interference.
  • a terminal SSI (Stated Station) of a certain system B detects that a neighboring system A is a downlink interference source of the terminal SS1 of a certain system B.
  • the terminal SS1 of the system B is further required to send the uplink interference source signal to the neighbor system A to determine whether the terminal SS1 of the system B causes uplink interference to the neighbor system A; or if a neighbor system A detects the neighbor system B
  • the base station A is required to send the downlink interference source signal to the terminal of the system B to determine whether the base station A causes downlink interference to the terminal SS1 of the system B.
  • the base station and the terminal need to perform corresponding signal transmission and detection for the two types of interference detection, which increases the complexity of the base station and the terminal.
  • the inventor has found that at least the following problems exist in the prior art: the existing method for detecting a downlink interference source needs to use an additional air interface resource to transmit a signal for downlink interference source detection, which causes a certain amount of air interface resources.
  • the waste, and the base station and the terminal also need to add certain functions such as uplink signal transmission and detection, which increases the complexity of the base station and the terminal.
  • Summary of the invention The embodiment of the invention provides a method, a system and a device for detecting a downlink interference source, so as to realize that the downlink interference signal is not occupied by occupying additional air interface resources, and the additional function is not added to the base station and the terminal to complete the detection of the downlink interference source. .
  • an embodiment of the present invention provides a method for detecting a downlink interference source, including: a base station detecting an uplink interference signal of a terminal from a neighboring system; and determining, by the base station, the foregoing, according to the detection result of the uplink interference signal,
  • the base station is a downlink interference source of the terminal of the neighbor system.
  • the embodiment of the present invention further provides a downlink interference source detection system, including: a terminal of a neighbor system, configured to transmit an uplink interference signal; and a base station, configured to detect an uplink interference signal of a terminal from the neighbor system, and according to The detection result of the uplink interference signal determines that the base station is a downlink interference source of the terminal of the neighbor system.
  • a downlink interference source detection system including: a terminal of a neighbor system, configured to transmit an uplink interference signal; and a base station, configured to detect an uplink interference signal of a terminal from the neighbor system, and according to The detection result of the uplink interference signal determines that the base station is a downlink interference source of the terminal of the neighbor system.
  • the embodiment of the present invention further provides a base station, including: a signal detecting module, configured to detect an uplink interference signal of a terminal from a neighboring system; and an interference source determining module, configured to perform, according to the signal detecting module, the uplink The detection result of the interference signal determines that the base station is a downlink interference source of the terminal of the neighbor system.
  • the embodiment of the present invention has the following advantages: According to the embodiment of the present invention, the base station determines, according to the detection result of the uplink interference signal of the terminal of the neighbor system, whether the base station is a downlink interference source of the terminal of the neighbor system. Therefore, it is not necessary to allocate an additional downlink interference transmission interval for the downlink interference source detection to transmit the downlink interference signal, which saves the air interface resources and reduces the implementation complexity of the base station and the terminal.
  • FIG. 1 is a flowchart of a method for detecting a downlink interference source according to an embodiment of the present invention
  • FIG. 2 is a structural diagram of a detection system for a downlink interference source according to an embodiment of the present invention.
  • the embodiment of the invention provides a method for detecting a downlink interference source, where the base station detects an uplink interference signal of a terminal from a neighboring system, and determines according to the detection result of the uplink interference signal. Determine whether the base station is a downlink interference source of the terminal of the neighbor system. Therefore, it is possible to complete the detection of the downlink interference source without dividing the additional downlink interference transmission interval to transmit the downlink interference signal, thereby saving air interface resources and reducing the implementation complexity of the base station and the terminal.
  • FIG. 1 it is a flowchart of a method for detecting a downlink interference source according to an embodiment of the present invention, which specifically includes the following steps:
  • Step S101 The base station detects an uplink interference signal from a terminal of the neighbor system.
  • Step S102 The base station determines, according to the detection result of the uplink interference signal, that the base station is a downlink interference source of the terminal of the neighboring system.
  • the detection result of the uplink interference signal includes that the base station detects the uplink interference signal from the terminal of the neighbor system, and the base station does not detect the uplink interference signal from the terminal of the neighbor system.
  • the base station determines that the base station is not the terminal of the neighboring system, if the detection result of the uplink interference signal is that the base station detects the neighbor from the neighbor.
  • the base station determines that the base station is a downlink interference source of the terminal of the neighbor system.
  • the base station may further determine, according to the information included in the uplink interference signal of the terminal of the detected neighboring system, whether the base station is a downlink 4 source of the terminal of the neighboring system, and determining the method:
  • the base station may determine, according to the information included in the uplink interference signal, the received signal power of the base station to the terminal of the neighbor system, and the terminal of the neighbor system transmits the uplink interference signal. EIRP (Effective Isotropic Radiated Power) and Receive Antenna Gain.
  • the base station may determine the base station pair according to the received signal power of the base station to the terminal of the neighbor system, the EIRP and the receiving antenna gain of the uplink system transmitting the uplink interference signal, and the maximum transmit power, the receive antenna gain, and the transmit antenna gain of the base station. Interference power of the terminal of the neighbor system.
  • the received signal power of the base station to the terminal of the neighbor system is PRX_NSS
  • the EIRP of the terminal system transmitting the uplink interference signal is the PEIRP-NSS
  • the neighbor system The receiving antenna gain of the terminal is GRX_NSS
  • the maximum transmitting power of the base station is PMAX TX BS
  • the receiving antenna gain of the base station is GRX-BS
  • the transmitting antenna gain of the base station is GTX-BS
  • the base station is neighboring system
  • the interference power PRX BS of the terminal is:
  • PRX_BS PMAX_TX_BS+GRX_NSS - PEIRP NSS + PRX NSS + ( GTX BS - GRX_BS ) ( 1 )
  • PEIRP NSS PTX NSS + GTX SS
  • PTX NSS is the transmit power of the terminal of the neighbor system
  • GTX_SS is the transmit antenna gain of the terminal of the neighbor system.
  • the base station After obtaining the interference power of the base station to the terminal of the neighboring system, the base station determines whether the obtained interference power is greater than a predetermined threshold. If it is greater, determining that the base station is a downlink interference source of the terminal of the system, otherwise, determining The base station is not a downlink interference source for the terminal of the residential system.
  • the base station may further calculate the interference power of the base station to the terminal of the neighbor system when the base station transmits the signal at an arbitrary transmit power, in which case, in the formula (1), the base station may replace the base station with the possible transmit power PCURR-TX-BS.
  • the maximum transmit power PMAX_TX_BS can be as shown in equation (2).
  • PRX B S PCURR_TX_B S+GRX NS S - PEIRP NSS + PRX NSS + ( GTX— BS _ GRX— BS ) ( 2 )
  • a plurality of threshold values may be set, for example: a first threshold value, a second threshold value, and a third threshold value, and according to the interference power estimation value obtained in the previous step, to determine the terminal of the base station to the neighboring system.
  • the level of interference For example, three levels of primary downlink interference source, secondary downlink interference source, and tertiary downlink interference source can be set, where the primary downlink interference source is a low interference source, the secondary downlink interference source is an acceptable interference source, and the third-level downlink is The source of interference is a source of serious interference. If the interference power of the base station to the terminal of the neighbor system is less than the first threshold, the base station is not the downlink interference source of the terminal of the neighbor system;
  • the base station is a primary downlink interference source of the terminal of the neighbor system.
  • the base station is a secondary downlink interference source of the terminal of the neighbor system. If the interference power of the base station to the terminal of the neighbor system is greater than or equal to the third threshold, the base station is a three-level downlink interference source of the terminal of the neighbor system.
  • the base station determines, according to the detection result of the uplink interference signal of the terminal of the neighboring system, whether the base station is a downlink interference source of the terminal of the neighbor system, and thus does not need to detect the downlink interference detection signal for the downlink interference source detection. It also does not need to occupy additional air interface resources, which improves the efficiency of the air interface and reduces the implementation complexity of the base station and the terminal.
  • FIG. 2 it is a structural diagram of a detection system for a downlink interference source according to an embodiment of the present invention, including: a terminal 1 of a neighbor system for transmitting an uplink interference signal; and a base station 2 configured to detect an uplink of a terminal 1 from a neighbor system. Interfering with the signal, and determining, according to the detection result of the uplink interference signal, that the base station 2 is the downlink interference source of the terminal 1 of the neighbor system.
  • the base station 2 includes: a signal detecting module 21, configured to detect an uplink interference signal of the terminal 1 from the neighboring system;
  • the interference source determining module 22 is configured to determine, according to the detection result of the uplink interference signal by the signal detecting module 21, that the base station 2 is the downlink interference source of the terminal 1 of the neighbor system.
  • the interference source determining module 22 includes: a power determining submodule 221, configured to determine, according to the detection result of the uplink interference signal by the signal detecting module 21, the interference power of the base station 2 to the terminal 1 of the neighboring system;
  • the determining sub-module 222 is configured to determine whether the interference power determined by the power determining sub-module 221 is greater than a predetermined threshold
  • the determining sub-module 223 is configured to determine, when the determining sub-module 222 determines that the interference power of the base station 2 to the terminal 1 of the neighboring system is greater than a predetermined threshold, determining that the base station 2 is the downlink interference source of the terminal 1 of the neighboring system.
  • the power determining sub-module 221 is specifically an interference power determining sub-module, configured to receive, according to the received power of the base station 2, the terminal 1 of the neighboring system, the EIRP and the receiving antenna gain of the uplink interference signal of the terminal 1 of the neighboring system, and the base station 2
  • the maximum transmit power, the receive antenna gain, and the transmit antenna gain determine the interference power of the base station 2 to the terminal 1 of the neighbor system.
  • the detection system of the downlink interference source, the base station 2 is based on the terminal 1 of the neighboring system
  • the detection result of the uplink interference signal determines whether the base station 2 is the downlink interference source of the terminal 1 of the neighbor system, thereby realizing that the downlink interference source can be detected without dividing the additional downlink interference transmission interval to transmit the downlink interference signal, thereby saving
  • the air interface resources also reduce the implementation complexity of the base station 2 and the terminal 1.
  • the present invention can be implemented by hardware or by software plus a necessary general hardware platform.
  • the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

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

Abstract

Le mode de réalisation de la présente invention porte sur un procédé de détection de source de brouillage de liaison descendante, qui comprend les opérations suivantes : une station de base détecte les signaux de brouillage de liaison montante provenant des terminaux de systèmes voisins ; la station de base se détermine elle-même en tant que source de brouillage de liaison descendante des terminaux de systèmes voisins selon le résultat de détection des signaux de brouillage de liaison montante. Avec le mode de réalisation de la présente invention, la station de base détermine si elle est elle-même la source de brouillage de liaison descendante des terminaux de systèmes voisins selon le résultat de détection des signaux de brouillage de liaison montante des terminaux de systèmes voisins. En conséquence, la détection de source de brouillage de liaison descendante est accomplie sans allocation de temps d'émission de brouillage de liaison descendante supplémentaire pour émettre des signaux de brouillage de liaison descendante, et cela économise les ressources d'interface radio et réduit la complexité de mise en œuvre des stations de base et des terminaux.
PCT/CN2008/073290 2007-12-20 2008-12-02 Procédé et système de détection de source de brouillage de liaison descendante, et dispositif associé WO2009079956A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2007103020399A CN101466104A (zh) 2007-12-20 2007-12-20 一种下行干扰源的检测方法、***和装置
CN200710302039.9 2007-12-20

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WO2009079956A1 true WO2009079956A1 (fr) 2009-07-02

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CN102892121B (zh) * 2011-07-22 2017-09-29 中兴通讯股份有限公司 降低微小区对宏小区终端下行带外辐射干扰的方法及***
US20160226603A1 (en) * 2015-01-30 2016-08-04 Alex Stephenne Method and system for validating interfering signals
CN110072249B (zh) * 2018-01-23 2020-12-04 大唐移动通信设备有限公司 一种检测基站干扰的方法和装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1480006A (zh) * 2000-10-11 2004-03-03 �������ɭ 将互反性运用于下行链路干扰识别的***和方法
JP2006349470A (ja) * 2005-06-15 2006-12-28 Toshiba Corp アップリンク干渉源位置特定装置及びその方法
CN1956357A (zh) * 2005-10-25 2007-05-02 华为技术有限公司 一种干扰源信息收集上报方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1480006A (zh) * 2000-10-11 2004-03-03 �������ɭ 将互反性运用于下行链路干扰识别的***和方法
JP2006349470A (ja) * 2005-06-15 2006-12-28 Toshiba Corp アップリンク干渉源位置特定装置及びその方法
CN1956357A (zh) * 2005-10-25 2007-05-02 华为技术有限公司 一种干扰源信息收集上报方法

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