BR112015029472A2 - métodos de descoberta e medições para células pequenas em sistemas ofdm/ofdma - Google Patents

métodos de descoberta e medições para células pequenas em sistemas ofdm/ofdma

Info

Publication number
BR112015029472A2
BR112015029472A2 BR112015029472A BR112015029472A BR112015029472A2 BR 112015029472 A2 BR112015029472 A2 BR 112015029472A2 BR 112015029472 A BR112015029472 A BR 112015029472A BR 112015029472 A BR112015029472 A BR 112015029472A BR 112015029472 A2 BR112015029472 A2 BR 112015029472A2
Authority
BR
Brazil
Prior art keywords
small cell
measurements
ofdm
drs
discovery
Prior art date
Application number
BR112015029472A
Other languages
English (en)
Inventor
Li Chien-Chang
Chiang Hsiao-Lan
Liao Pei-Kai
Zhuang Xiangyang
Original Assignee
Mediatek 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 Mediatek Inc filed Critical Mediatek Inc
Publication of BR112015029472A2 publication Critical patent/BR112015029472A2/pt

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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/005—Interference mitigation or co-ordination of intercell interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0079—Acquisition of downlink reference signals, e.g. detection of cell-ID
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J2011/0096—Network synchronisation
    • 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
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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
    • H04W88/02—Terminal devices

Abstract

resumo métodos de descoberta e medições para células pequenas em sistemas ofdm/ofdma é proposto um método de descoberta de pequenas células e medições de rsrp/rsrq em sistemas ofdm/ofdma. é introduzido um sinal de referência de descoberta (drs) com frequência de transmissão baixa para suportar detecção de pequenas células dentro de um período de tempo curto, descoberta de múltiplas pequenas células e medição precisa de múltiplas pequenas células. o drs consiste em um ou múltiplos tipos de sinal de referência com as funcionalidades que incluem sincronização de temporização e frequência, detecção de células, medições de rsrp/rssi/rsrq e mitigação de interferência. é configurado silenciamento de re para o drs para reduzir o nível de interferência de dados para drs para descoberta e medições de rsrp/rsrq para pequenas células.
BR112015029472A 2013-09-27 2014-09-26 métodos de descoberta e medições para células pequenas em sistemas ofdm/ofdma BR112015029472A2 (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201361883336P 2013-09-27 2013-09-27
US201461968491P 2014-03-21 2014-03-21
US14/496,219 US9749075B2 (en) 2013-09-27 2014-09-25 Methods of discovery and measurements for small cells in OFDM/OFDMA systems
PCT/CN2014/087542 WO2015043504A1 (en) 2013-09-27 2014-09-26 Methods of discovery and measurements for small cellsinofdm/ofdmasystems

Publications (1)

Publication Number Publication Date
BR112015029472A2 true BR112015029472A2 (pt) 2017-07-25

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
BR112015029476A BR112015029476A2 (pt) 2013-09-27 2014-09-26 métodos de descoberta e medições para células pequenas em sistemas ofdm/ofdma
BR112015029472A BR112015029472A2 (pt) 2013-09-27 2014-09-26 métodos de descoberta e medições para células pequenas em sistemas ofdm/ofdma

Family Applications Before (1)

Application Number Title Priority Date Filing Date
BR112015029476A BR112015029476A2 (pt) 2013-09-27 2014-09-26 métodos de descoberta e medições para células pequenas em sistemas ofdm/ofdma

Country Status (5)

Country Link
US (3) US9559797B2 (pt)
EP (2) EP2997770B1 (pt)
CN (4) CN105580435B (pt)
BR (2) BR112015029476A2 (pt)
WO (2) WO2015043504A1 (pt)

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US9749075B2 (en) 2017-08-29
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US20170324499A1 (en) 2017-11-09
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