IN2014KN01650A - - Google Patents

Info

Publication number
IN2014KN01650A
IN2014KN01650A IN1650KON2014A IN2014KN01650A IN 2014KN01650 A IN2014KN01650 A IN 2014KN01650A IN 1650KON2014 A IN1650KON2014 A IN 1650KON2014A IN 2014KN01650 A IN2014KN01650 A IN 2014KN01650A
Authority
IN
India
Prior art keywords
transmit antenna
base station
communications system
user equipments
common pilot
Prior art date
Application number
Other languages
English (en)
Inventor
Bo Göransson
Erik Larsson
Qingyu Miao
Sairamesh Nammi
Original Assignee
Optis Cellular Technology Llc
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 Optis Cellular Technology Llc filed Critical Optis Cellular Technology Llc
Publication of IN2014KN01650A publication Critical patent/IN2014KN01650A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • 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
    • 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
    • H04B7/0413—MIMO systems
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • 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]
    • H04W52/06—TPC algorithms
    • H04W52/16—Deriving transmission power values from another channel
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • 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]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/143—Downlink power control
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
IN1650KON2014 2012-01-30 2013-01-22 IN2014KN01650A (enrdf_load_stackoverflow)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261592319P 2012-01-30 2012-01-30
PCT/SE2013/050047 WO2013115706A2 (en) 2012-01-30 2013-01-22 Method and apparatus for pilot power allocation in a multi antenna communication system

Publications (1)

Publication Number Publication Date
IN2014KN01650A true IN2014KN01650A (enrdf_load_stackoverflow) 2015-10-23

Family

ID=48905999

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1650KON2014 IN2014KN01650A (enrdf_load_stackoverflow) 2012-01-30 2013-01-22

Country Status (7)

Country Link
US (1) US9385904B2 (enrdf_load_stackoverflow)
EP (1) EP2810498A4 (enrdf_load_stackoverflow)
JP (1) JP2015506644A (enrdf_load_stackoverflow)
KR (1) KR20140127266A (enrdf_load_stackoverflow)
CN (1) CN104584654A (enrdf_load_stackoverflow)
IN (1) IN2014KN01650A (enrdf_load_stackoverflow)
WO (1) WO2013115706A2 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9178585B2 (en) 2012-03-16 2015-11-03 Telefonaktiebolaget L M Ericsson (Publ) Pilot channel configuration for MIMO network
CN102655486B (zh) * 2012-05-10 2014-12-31 华为技术有限公司 一种导频信号发射方法、信道估计方法、装置及系统
US8885590B2 (en) 2012-05-18 2014-11-11 Futurewei Technologies, Inc. Systems and methods for scheduling multiple-input and multiple-output (MIMO) high-speed downlink packet access (HSDPA) pilot channels
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
EP2822344B1 (en) * 2013-07-03 2016-03-23 Telefonaktiebolaget LM Ericsson (publ) Transmission rank selection when deploying a shared radio cell
US9439153B1 (en) * 2014-04-07 2016-09-06 Sprint Spectrum L.P. Systems and methods for determining a power option for an access node
US10903951B2 (en) * 2015-06-05 2021-01-26 Futurewei Technologies, Inc. Systems and methods for adaptive pilot allocation
KR20190006013A (ko) * 2016-05-25 2019-01-16 후아웨이 테크놀러지 컴퍼니 리미티드 원격 무선 유닛의 채널 송신 전력을 설정하기 위한 방법, 및 기지국

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7218948B2 (en) 2003-02-24 2007-05-15 Qualcomm Incorporated Method of transmitting pilot tones in a multi-sector cell, including null pilot tones, for generating channel quality indicators
KR100704676B1 (ko) * 2005-06-24 2007-04-06 한국전자통신연구원 이동통신 시스템에서 전송 안테나의 전력 할당을 제어하는다이버서티 전송 방법 및 기지국 전송기
US8897269B2 (en) * 2008-01-30 2014-11-25 Qualcomm Incorporated Method and apparatus for mitigating pilot pollution in a wireless network
CN101527699A (zh) * 2008-03-04 2009-09-09 中兴通讯股份有限公司 一种ofdma系统中的自适应导频分配装置及方法
ES2360328B1 (es) * 2009-04-23 2012-05-08 Vodafone España S.A.U Transmisión del canal piloto en una red de comunicación celular.
ES2360329B1 (es) * 2009-07-14 2012-05-08 Vodafone España, S.A.U. Método y controlador de red radio para seleccionar una tecnolog�?a de trasmisión para comunicaciones en redes móviles de �?rea amplia.
CN102118841B (zh) * 2010-06-18 2015-11-25 电信科学技术研究院 测量导频的发送和接收方法及装置、信道质量指示反馈方法和装置
CN103220028B (zh) * 2012-01-21 2016-03-30 华为技术有限公司 导频信号发射方法、信道估计方法、装置及系统

Also Published As

Publication number Publication date
EP2810498A2 (en) 2014-12-10
US9385904B2 (en) 2016-07-05
WO2013115706A2 (en) 2013-08-08
CN104584654A (zh) 2015-04-29
KR20140127266A (ko) 2014-11-03
WO2013115706A3 (en) 2013-10-10
EP2810498A4 (en) 2015-07-08
JP2015506644A (ja) 2015-03-02
US20140056374A1 (en) 2014-02-27

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