[go: up one dir, main page]

MX2010008315A - Metodo y aparato para atenuar la contaminacion de piloto en una red inalambrica. - Google Patents

Metodo y aparato para atenuar la contaminacion de piloto en una red inalambrica.

Info

Publication number
MX2010008315A
MX2010008315A MX2010008315A MX2010008315A MX2010008315A MX 2010008315 A MX2010008315 A MX 2010008315A MX 2010008315 A MX2010008315 A MX 2010008315A MX 2010008315 A MX2010008315 A MX 2010008315A MX 2010008315 A MX2010008315 A MX 2010008315A
Authority
MX
Mexico
Prior art keywords
density
pilot
transmission power
level
less
Prior art date
Application number
MX2010008315A
Other languages
English (en)
Inventor
Tingfang Ji
Avneesh Agrawai
Alexei Y Gorokhov
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of MX2010008315A publication Critical patent/MX2010008315A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H04L1/0004—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes applied to control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/001—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0062—Avoidance of ingress interference, e.g. ham radio 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]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR or Eb/lo
    • 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]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • 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
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot 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]
    • H04W52/30—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
    • H04W52/343—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading taking into account loading or congestion level
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • 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

Landscapes

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

Abstract

Se describen técnicas para mitigar la contaminación de piloto en una red inalámbrica. En un aspecto, la contaminación de piloto puede mitigarse al reducir la densidad y/o potencia de transmisión de pilotos comunes siempre que sea posible. Una celda puede enviar una piloto común en una primera densidad y en un primer nivel de potencia de transmisión durante un primer periodo de tiempo y puede enviar la piloto común en una segunda densidad y un segundo nivel de potencia de transmisión durante un segundo periodo de transmisión. La segunda densidad puede ser menor que la primera densidad y/o el segundo nivel de potencia de transmisión puede ser menor que el primer nivel de potencia de transmisión. Puede lograrse una menor densidad al enviar la piloto común menos frecuentemente, en menos subportadoras, y/o desde menos antenas. La celda puede determinar si reduce o no la densidad y/o potencia de transmisión de la piloto común con base en la carga de red, las SINRs de las terminales, etc. En otro aspecto, la contaminación de piloto puede mitigarse al realizar la cancelación de piloto en una terminal.
MX2010008315A 2008-01-30 2009-01-27 Metodo y aparato para atenuar la contaminacion de piloto en una red inalambrica. MX2010008315A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US2489108P 2008-01-30 2008-01-30
US12/359,992 US8897269B2 (en) 2008-01-30 2009-01-26 Method and apparatus for mitigating pilot pollution in a wireless network
PCT/US2009/032159 WO2009099810A2 (en) 2008-01-30 2009-01-27 Method and apparatus for mitigating pilot pollution in a wireless network

Publications (1)

Publication Number Publication Date
MX2010008315A true MX2010008315A (es) 2010-10-20

Family

ID=40886645

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2010008315A MX2010008315A (es) 2008-01-30 2009-01-27 Metodo y aparato para atenuar la contaminacion de piloto en una red inalambrica.

Country Status (16)

Country Link
US (2) US8897269B2 (es)
EP (2) EP2241142B1 (es)
JP (3) JP5718057B2 (es)
KR (3) KR101277249B1 (es)
CN (3) CN101983531B (es)
AU (1) AU2009210526B2 (es)
BR (1) BRPI0906602A2 (es)
CA (3) CA2713697C (es)
ES (2) ES2473318T3 (es)
HK (1) HK1206903A1 (es)
IL (1) IL207269A0 (es)
MX (1) MX2010008315A (es)
RU (1) RU2469510C2 (es)
SG (1) SG188089A1 (es)
TW (2) TW201419801A (es)
WO (1) WO2009099810A2 (es)

Families Citing this family (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8897269B2 (en) 2008-01-30 2014-11-25 Qualcomm Incorporated Method and apparatus for mitigating pilot pollution in a wireless network
US8693463B2 (en) * 2008-03-13 2014-04-08 Telefonaktiebolaget Lm Ericsson (Publ) Neighbour cell quality measurement in a telecommunications system
US9867203B2 (en) 2008-07-11 2018-01-09 Qualcomm Incorporated Synchronous TDM-based communication in dominant interference scenarios
GB2463074B (en) * 2008-09-02 2010-12-22 Ip Access Ltd Communication unit and method for selective frequency synchronisation in a cellular communication network
US8130849B2 (en) * 2008-09-16 2012-03-06 Telefonaktiebolaget Lm Ericsson (Publ) Maximum A posteriori interference estimation in a wireless communication system
US9031053B2 (en) * 2008-10-23 2015-05-12 Qualcomm Incorporated Method and apparatus for communicating in a relay communication network
EP2200245B1 (en) * 2008-12-19 2012-08-15 Telefonaktiebolaget L M Ericsson (publ) A receiver and a method for mobile communications
IN2009DE00003A (es) * 2009-01-02 2015-08-14 Motorola Mobility Inc
US9338031B2 (en) 2009-08-17 2016-05-10 Qualcomm Incorporated Methods and apparatus for interference decrease/cancellation on downlink acquisition signals
CN101998607B (zh) * 2009-08-31 2013-07-31 中国移动通信集团公司 上行时隙引入下行传输辅同步信号的方法、系统及装置
CN101741461B (zh) * 2009-12-29 2014-04-02 华为技术有限公司 邻区干扰消除方法、装置和接收机
US8385243B2 (en) 2010-01-18 2013-02-26 Qualcomm Incorporated Method of selecting bit rate and transmit power for energy-efficient transmission
KR101461974B1 (ko) * 2010-02-02 2014-11-14 엘지전자 주식회사 확장 캐리어에서의 측정 수행 방법 및 장치
WO2011105938A1 (en) * 2010-02-24 2011-09-01 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for controlling energy consumption in a multi-antenna base station
EP2550760B1 (en) 2010-03-24 2020-02-19 LG Electronics Inc. Method and apparatus for reducing inter-cell interference in radio communication system
US9609536B2 (en) 2010-04-13 2017-03-28 Qualcomm Incorporated Measurement of received power and received quality in a wireless communication network
US9065583B2 (en) * 2010-04-13 2015-06-23 Qualcomm Incorporated Method and apparatus for inferring user equipment interference suppression capability from measurements report
CN102238582B (zh) * 2010-04-23 2016-09-28 电信科学技术研究院 一种确定邻区干扰的方法、系统和装置
US9425915B2 (en) 2010-04-30 2016-08-23 Qualcomm Incorporated Interference cancellation
US8737187B2 (en) * 2010-04-30 2014-05-27 Qualcomm Incorporated Interference cancellation
US8768359B2 (en) 2010-08-20 2014-07-01 Qualcomm Incorporated Sample selection for secondary synchronization signal (SSS) detection
US8817924B2 (en) * 2010-09-23 2014-08-26 Qualcomm Incorporated Iterative pilot tone cancellation for improved channel estimation and decoding
GB2486494A (en) * 2010-12-17 2012-06-20 Vodafone Ip Licensing Ltd Interference detection in mobile telecommunications networks
US20120182895A1 (en) * 2011-01-13 2012-07-19 Electronics And Telecommunications Research Institute Apparatus and method for transmitting and receiving channel state information
US8811285B2 (en) 2011-02-14 2014-08-19 Futurewei Technologies, Inc. Control channel transmission and reception method and system
EP2506639B1 (en) * 2011-03-31 2014-06-04 Alcatel Lucent Pilot power control
US8489031B2 (en) * 2011-05-18 2013-07-16 ReVerb Networks, Inc. Interferer detection and interference reduction for a wireless communications network
EP2532689A1 (de) * 2011-06-07 2012-12-12 Basf Se Herstellung von Polyacrylaten durch Emulsionspolymerisation
US9008582B2 (en) * 2011-08-25 2015-04-14 Qualcomm Incorporated User equipment enhancements for cooperative multi-point communication
US9603035B2 (en) 2011-10-13 2017-03-21 Telefonaktiebolaget L M Ericsson Method and node related to channel estimation
US8937918B2 (en) 2011-10-29 2015-01-20 Ofinno Technologies, Llc Efficient special subframe allocation
US8971250B2 (en) 2011-10-29 2015-03-03 Ofinno Technologies, Llc Special subframe allocation
US11696300B2 (en) 2011-10-29 2023-07-04 Comcast Cable Communications, Llc Configuration of reduced transmission power time intervals based on traffic load
EP2597793A1 (en) * 2011-11-25 2013-05-29 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Method for estimating interference within a serving cell, user equipment, computer program and computer program products
US8873467B2 (en) 2011-12-05 2014-10-28 Ofinno Technologies, Llc Control channel detection
US20130142291A1 (en) * 2011-12-05 2013-06-06 Esmael Hejazi Dinan Synchronization Signals Detection
CN102523186B (zh) * 2011-12-19 2014-10-22 展讯通信（上海）有限公司 通信终端及其干扰抵消方法和装置、数据解调方法
FR2984658A1 (fr) * 2011-12-19 2013-06-21 France Telecom Etablissement de l'indicateur de qualite d'un canal radio par decorrelation des conditions radio et de l'activite reseau
US8971275B2 (en) 2011-12-31 2015-03-03 Ofinno Technologies, Llc Almost blank subframe indication in wireless networks
US8989288B2 (en) * 2012-01-20 2015-03-24 Telefonaktiebolaget L M Ericsson (Publ) Traffic aware common pilot configuration
WO2013115706A2 (en) * 2012-01-30 2013-08-08 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for pilot power allocation in a multi antenna communication system
US9288680B2 (en) * 2012-03-22 2016-03-15 Alcatel Lucent Almost blank subframe duty cycle adaptation in heterogeneous networks
JP2013219507A (ja) * 2012-04-06 2013-10-24 Ntt Docomo Inc 無線通信方法、ローカルエリア基地局装置、移動端末装置及び無線通信システム
CA2873428A1 (en) 2012-05-13 2013-11-21 Amir Khandani Distributed collaborative signaling in full duplex wireless transceivers
US9997830B2 (en) 2012-05-13 2018-06-12 Amir Keyvan Khandani Antenna system and method for full duplex wireless transmission with channel phase-based encryption
US20140016691A1 (en) * 2012-07-16 2014-01-16 Rambus Inc. Adaptive Interference Suppression Using Interference Power Measurements
US9357507B2 (en) * 2012-09-13 2016-05-31 Qualcomm Incorporated Centralized management for pilot pollution mitigation in small cell networks
US9900132B2 (en) * 2012-11-14 2018-02-20 Telefonaktiebolaget Lm Ericsson (Publ) Pilot signal transmission method, associated transmit-receive point, pilot signal reception method and associated user equipment
US11177919B2 (en) * 2013-01-18 2021-11-16 Texas Instruments Incorporated Methods for energy-efficient unicast and multicast transmission in a wireless communication system
US20140219117A1 (en) 2013-02-07 2014-08-07 Qualcomm Incorporated Apparatus and method for inter cell interference coordination
US9094951B2 (en) * 2013-03-14 2015-07-28 Qualcomm Incorporated Communications methods and apparatus for allocation of resources and handover related measurements
WO2014180004A1 (zh) 2013-05-10 2014-11-13 华为技术有限公司 一种信号传输方法及设备
US10177896B2 (en) 2013-05-13 2019-01-08 Amir Keyvan Khandani Methods for training of full-duplex wireless systems
US9236996B2 (en) 2013-11-30 2016-01-12 Amir Keyvan Khandani Wireless full-duplex system and method using sideband test signals
US9413516B2 (en) 2013-11-30 2016-08-09 Amir Keyvan Khandani Wireless full-duplex system and method with self-interference sampling
US9641310B2 (en) * 2013-12-13 2017-05-02 Qualcomm Incorporated Network assisted interference cancellation signaling
CN104735792B (zh) * 2013-12-23 2018-10-02 华为技术有限公司 导频资源分配方法及装置
US9820311B2 (en) 2014-01-30 2017-11-14 Amir Keyvan Khandani Adapter and associated method for full-duplex wireless communication
US20160277167A1 (en) * 2014-03-31 2016-09-22 Sony Corporation Pilot time slot hopping
JP2017519387A (ja) * 2014-04-08 2017-07-13 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ 干渉消去
EP3158670A1 (en) * 2014-06-18 2017-04-26 Sony Corporation Standardized inter-base station reporting of pilot contamination for improved pilot resource re-use
CN104270820B (zh) * 2014-08-04 2018-01-19 西安交通大学 3d大规模mimo系统中联合的垂直波束控制及功率分配方法
DE102014012266B4 (de) 2014-08-22 2024-10-02 Maschinenfabrik Reinhausen Gmbh Schaltanordnung mit zwei Laststufenschaltern, elektrische Anlage mit einer derartigen Schaltanordnung sowie deren Verwendung
US20160095088A1 (en) * 2014-09-26 2016-03-31 Shin-horng WONG Methods and systems for maintaining downlink overhead for decoding
CN104320170B (zh) * 2014-10-29 2017-06-06 西安交通大学 大规模mimo系统中导频污染抑制波束赋形方法
US9681324B2 (en) * 2014-10-30 2017-06-13 Huawei Technologies Co., Ltd. Method and controller for low-overhead user equipment measurements
US9985802B2 (en) * 2014-10-31 2018-05-29 Qualcomm Incorporated Channel estimation enhancements
US11317421B2 (en) 2014-11-20 2022-04-26 British Telecommunications Public Limited Company Cellular communications network
US20160212749A1 (en) * 2015-01-19 2016-07-21 Qualcomm Incorporated Systems and methods for use of multiple modulation and coding schemes in a physical protocol data unit
US10498518B2 (en) * 2015-01-29 2019-12-03 Sony Corporation Apparatus and method
KR20160118842A (ko) 2015-04-03 2016-10-12 한국전자통신연구원 Mimo를 이용한 통신 방법과 이를 수행할 수 있는 통신 장치
CN105721125B (zh) * 2016-01-21 2019-03-08 南京邮电大学 一种能效最优的多小区大规模mimo系统的导频调度方法
US10063396B2 (en) 2016-02-05 2018-08-28 Hong Kong Applied Science and Technology Research Institute Company Limited Method and apparatus of topological pilot decontamination for massive MIMO systems
US10491350B2 (en) 2016-02-29 2019-11-26 British Telecommunications Public Limited Company Adaptive reference signal patterns
CN108781150B (zh) 2016-02-29 2019-09-10 英国电讯有限公司 控制自适应参考信号模式的装置、方法和计算机可读介质
EP3424252B1 (en) 2016-02-29 2022-03-16 British Telecommunications public limited company Adapting reference signal density
JP2017183797A (ja) * 2016-03-28 2017-10-05 Kddi株式会社 光通信システムおよび方法
US10778295B2 (en) 2016-05-02 2020-09-15 Amir Keyvan Khandani Instantaneous beamforming exploiting user physical signatures
KR102431635B1 (ko) * 2016-11-04 2022-08-12 삼성전자 주식회사 무선 셀룰라 통신 시스템에서 지연 감소를 위한 적응적 재전송 방법 및 장치
US10044537B2 (en) 2016-12-28 2018-08-07 Intel IP Corporation Frequency domain pulse position modulation
US10700766B2 (en) 2017-04-19 2020-06-30 Amir Keyvan Khandani Noise cancelling amplify-and-forward (in-band) relay with self-interference cancellation
US11146395B2 (en) 2017-10-04 2021-10-12 Amir Keyvan Khandani Methods for secure authentication
US11012144B2 (en) 2018-01-16 2021-05-18 Amir Keyvan Khandani System and methods for in-band relaying
CN110086591B (zh) * 2019-05-14 2021-10-22 鹰潭泰尔物联网研究中心 一种大规模天线系统中的导频污染抑制方法
CN111726879B (zh) * 2020-06-10 2023-07-25 中南大学 一种基于时移导频的固定功率分配方法及系统
CN119254579B (zh) * 2024-12-04 2025-02-28 南京创芯慧联技术有限公司 消除邻小区干扰的信道估计方法、装置、设备和介质

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5548800A (en) 1994-06-03 1996-08-20 Motorola, Inc. Satellite telecommunication system with apparatus for protecting radio astronomy and method of using same
JP3709105B2 (ja) 1999-07-23 2005-10-19 株式会社エヌ・ティ・ティ・ドコモ 測定用チャンネルを用いた他チャンネル通信品質推定システムおよびその通信品質推定方法
JP2002077010A (ja) * 2000-08-29 2002-03-15 Matsushita Electric Ind Co Ltd 基地局装置および無線受信方法
JP4548954B2 (ja) * 2001-03-09 2010-09-22 株式会社日立国際電気 干渉信号除去装置
US8611311B2 (en) * 2001-06-06 2013-12-17 Qualcomm Incorporated Method and apparatus for canceling pilot interference in a wireless communication system
KR100426623B1 (ko) 2001-12-22 2004-04-13 한국전자통신연구원 인접 기지국 파일럿 신호 제거를 위한 이동통신 단말기의복조 장치 및 그 방법
KR100507519B1 (ko) 2002-12-13 2005-08-17 한국전자통신연구원 Ｏｆｄｍａ 기반 셀룰러 시스템의 하향링크를 위한 신호구성 방법 및 장치
US7016319B2 (en) * 2003-03-24 2006-03-21 Motorola, Inc. Method and apparatus for reducing co-channel interference in a communication system
KR101160136B1 (ko) * 2003-08-12 2012-06-26 파나소닉 주식회사 무선 통신 장치 및 파일럿 심볼 전송 방법
KR20050031548A (ko) * 2003-09-30 2005-04-06 유티스타콤코리아 유한회사 순방향 통화채널의 부하에 따른 동적 파일럿 전력 할당 방법
EP1542488A1 (en) 2003-12-12 2005-06-15 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for allocating a pilot signal adapted to the channel characteristics
US7715806B2 (en) 2004-10-06 2010-05-11 Broadcom Corporation Method and system for diversity processing including using dedicated pilot method for closed loop
KR100932632B1 (ko) 2005-01-24 2009-12-21 가부시키가이샤 엔티티 도코모 이동 통신 단말 및 멀티패스 간섭 제거장치의 기동을 제어하는 방법
US8064837B2 (en) 2005-06-16 2011-11-22 Qualcomm Incorporated Method and apparatus for optimum selection of MIMO and interference cancellation
JP2007019569A (ja) 2005-07-05 2007-01-25 Nec Mobiling Ltd 無線通信システム
CN101233709A (zh) 2005-07-29 2008-07-30 松下电器产业株式会社 无线通信装置和无线通信方法
JP4655836B2 (ja) 2005-09-06 2011-03-23 Ｋｄｄｉ株式会社 鉄道線路に基地局を最適配置するためのセル設計プログラム及び装置
US20070071145A1 (en) 2005-09-23 2007-03-29 Yona Perets Method and apparatus to correct channel quality indicator estimation
KR101026156B1 (ko) 2005-09-27 2011-04-05 노키아 코포레이션 멀티 캐리어 전송을 위한 파일럿 구조
EP3528393B1 (en) * 2005-10-07 2022-04-20 Nokia Technologies Oy Apparatus, method and computer program product providing common pilot channel for soft frequency reuse
ES2443117T5 (es) 2005-10-21 2024-11-26 Ericsson Telefon Ab L M Técnica para realizar un procedimiento de acceso aleatorio sobre una interfaz radio
WO2007064179A1 (en) 2005-12-03 2007-06-07 Samsung Electronics Co., Ltd. Method and apparatus for canceling neighbor cell interference signals in an orthogonal frequency division multiple access system
KR100871259B1 (ko) * 2006-01-02 2008-11-28 삼성전자주식회사 통신 시스템에서 신호 수신 장치 및 방법
US20070165735A1 (en) * 2006-01-18 2007-07-19 Interdigital Technology Corporation Method and apparatus for supporting transmit diversity in a receiver
CN103220753A (zh) 2006-04-28 2013-07-24 日本电气株式会社 导频信号发送方法、无线通信系统、用于它们的装置及程序
JP4447575B2 (ja) * 2006-05-01 2010-04-07 株式会社エヌ・ティ・ティ・ドコモ 送信装置及び送信方法
US8085696B2 (en) * 2006-07-14 2011-12-27 Airvana Networks Solutions, Inc. Dynamic modification of route update protocols
KR20080020143A (ko) * 2006-08-30 2008-03-05 삼성전자주식회사 직교 주파수 분할 다중 시스템에서 데이터 채널을송수신하는 장치 및 방법
CN101013915A (zh) * 2007-01-17 2007-08-08 倪明 Td－scdma系统消除同频干扰的方法
CN101047401A (zh) * 2007-04-26 2007-10-03 北京北方烽火科技有限公司 一种用于导频消除和载干比估计的方法
US8897269B2 (en) 2008-01-30 2014-11-25 Qualcomm Incorporated Method and apparatus for mitigating pilot pollution in a wireless network

Also Published As

Publication number Publication date
CN101983531B (zh) 2016-02-03
US20150055611A1 (en) 2015-02-26
US8897269B2 (en) 2014-11-25
JP6038855B2 (ja) 2016-12-07
BRPI0906602A2 (pt) 2015-07-07
US20100020771A1 (en) 2010-01-28
CN101983531A (zh) 2011-03-02
TW200947987A (en) 2009-11-16
SG188089A1 (en) 2013-03-28
IL207269A0 (en) 2010-12-30
EP2512193A1 (en) 2012-10-17
TWI435576B (zh) 2014-04-21
WO2009099810A3 (en) 2010-01-07
TW201419801A (zh) 2014-05-16
CA2815567C (en) 2015-05-19
CN104378813A (zh) 2015-02-25
JP2015046915A (ja) 2015-03-12
RU2010136046A (ru) 2012-03-20
EP2241142A2 (en) 2010-10-20
RU2469510C2 (ru) 2012-12-10
JP5718057B2 (ja) 2015-05-13
WO2009099810A2 (en) 2009-08-13
HK1206903A1 (en) 2016-01-15
CN103354645B (zh) 2016-07-06
KR20130008063A (ko) 2013-01-21
EP2241142B1 (en) 2014-03-19
AU2009210526B2 (en) 2013-05-02
KR20100113607A (ko) 2010-10-21
CA2815567A1 (en) 2009-08-13
CA2713697C (en) 2017-10-24
ES2472816T3 (es) 2014-07-03
EP2512193B1 (en) 2014-03-19
AU2009210526A1 (en) 2009-08-13
ES2473318T3 (es) 2014-07-04
CA2713697A1 (en) 2009-08-13
KR101280974B1 (ko) 2013-07-08
CA2978888A1 (en) 2009-08-13
KR101277249B1 (ko) 2013-06-26
KR20120099259A (ko) 2012-09-07
CN103354645A (zh) 2013-10-16
JP2013081196A (ja) 2013-05-02
US9485068B2 (en) 2016-11-01
JP2011514717A (ja) 2011-05-06

Similar Documents

Publication Publication Date Title
MX2010008315A (es) Metodo y aparato para atenuar la contaminacion de piloto en una red inalambrica.
MY152257A (en) Long-term interference mitigation in an asynchronous wireless network
WO2011005726A3 (en) Midamble for wireless networks
MX2010008491A (es) Piloto de decision de potencia para un sistema de comunicacion inalambrica.
EP2137997A4 (en) OPTIMIZATION OF SLEEP MODE FOR MOBILE DEVICES IN A BROADBAND NETWORK
MY161392A (en) Power save enhancements for wireless communication
AR074097A1 (es) Metodo y aparato para habilitar y deshabilitar un portador descendente suplementario
EP2618506A3 (en) Null pilots for interference estimation in a wireless communication network
NZ600676A (en) Method and arrangement for reporting channel state information in a telecommunication system
NO20084791L (no) Forbedret anrop
PH12015500356A1 (en) Cqi estimation in a wireless communication network
MX2009003596A (es) Transmision de señalizacion de acceso aleatorio para un sistema de acceso de comunicacion inalambrica.
TW200944016A (en) Serving cell selection in wireless communications
ATE505048T1 (de) Zellenneuauswahl in einem drahtlosen kommunikationssystem
MY154583A (en) Management of user equipment operation in a multi-carrier communication system
EP2147506A4 (en) SIGNAL INTERFERENCE REPORT ERROR IN THE FORM OF LOAD INSTABILITY INDICATOR FOR LOAD CONTROL IN CELLULAR SYSTEMS
MX2010013747A (es) Modos de baja potencia para femto-celdas.
DE602004017030D1 (de) Verfahren zur einstellung einer sendeleistung in einem drahtlosen kommunikations-netz
GB2447885B (en) Fast relay station handover
MX339128B (es) Metodo y dispositivo para activar y desactivar enlace ascendente de celda secundaria de terminal.
EP2311291A4 (en) METHOD FOR SELECTING ENHANCED TRANSPORT FORMAT COMBINATION BASED ON DEFINED ENERGY CONSUMPTION
WO2008036877A3 (en) Automatic resignation from ad hoc network
EP2608421A3 (en) Adaptive fade mitigation
MX2010002832A (es) Simbolos baliza transmitidos en multiples sub-portadores para comunicacion inalambrica.
TW200943992A (en) Wireless communication information relay

Legal Events

Date Code Title Description
FG Grant or registration