MX2010002047A - Metodo y aparato para mitigar la perdida temporal de sincronizacion de un sistema de comunicacion inalambrica. - Google Patents

Metodo y aparato para mitigar la perdida temporal de sincronizacion de un sistema de comunicacion inalambrica.

Info

Publication number
MX2010002047A
MX2010002047A MX2010002047A MX2010002047A MX2010002047A MX 2010002047 A MX2010002047 A MX 2010002047A MX 2010002047 A MX2010002047 A MX 2010002047A MX 2010002047 A MX2010002047 A MX 2010002047A MX 2010002047 A MX2010002047 A MX 2010002047A
Authority
MX
Mexico
Prior art keywords
cell
synchronization
synchronous operation
wireless communication
transmit power
Prior art date
Application number
MX2010002047A
Other languages
English (en)
Inventor
Alexei Gorokhov
Avneesh Agrawal
Samir Kapoor
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 MX2010002047A publication Critical patent/MX2010002047A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H04B7/2693—Centralised synchronisation, i.e. using external universal time reference, e.g. by using a global positioning system [GPS] or by distributing time reference over the wireline network
    • 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]
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—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
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Se describen técnicas para mitigar la pérdida temporal de sincronización en un sistema de comunicación inalámbrica. En un aspecto, una célula puede difundir periódicamente un indicador de modo para indicar la operación sincrónica u operación asincrónica por la célula. La célula también puede difundir su identidad de célula (ID), que puede omitir el indicador de modo y luego permanecería sin cambio cuando la célula cambia entre la operación asincrónica y sincrónica. En otro aspecto, la célula puede enviar información del tiempo del sistema indicativa de su tiempo actualizado del sistema al cambiar de la operación asincrónica a la operación sincrónica. El tiempo actualizado del sistema se puede usar para la comunicación con las terminales después del cambio a la operación sincrónica. En todavía otro aspecto, la célula puede disminuir su energía de transmisión antes de cambiar del modo de sincronización, cambiar el modo de sincronización cuando su energía de transmisión alcanza un nivel de energía predeterminado y después incrementar su energía de transmisión.
MX2010002047A 2007-08-23 2008-08-22 Metodo y aparato para mitigar la perdida temporal de sincronizacion de un sistema de comunicacion inalambrica. MX2010002047A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95751507P 2007-08-23 2007-08-23
US12/178,157 US9467958B2 (en) 2007-08-23 2008-07-23 Method and apparatus for mitigating temporary loss of synchronization in a wireless communication system
PCT/US2008/074095 WO2009026557A2 (en) 2007-08-23 2008-08-22 Method and apparatus for mitigating temporary loss of synchronization in a wireless communication system

Publications (1)

Publication Number Publication Date
MX2010002047A true MX2010002047A (es) 2010-03-25

Family

ID=40090345

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2010002047A MX2010002047A (es) 2007-08-23 2008-08-22 Metodo y aparato para mitigar la perdida temporal de sincronizacion de un sistema de comunicacion inalambrica.

Country Status (12)

Country Link
US (1) US9467958B2 (es)
EP (1) EP2198651A2 (es)
JP (1) JP2010537583A (es)
KR (1) KR20100056541A (es)
CN (1) CN101785344A (es)
AU (1) AU2008288790A1 (es)
BR (1) BRPI0815697A2 (es)
CA (1) CA2695013A1 (es)
MX (1) MX2010002047A (es)
RU (1) RU2010110810A (es)
TW (1) TW200917730A (es)
WO (1) WO2009026557A2 (es)

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RU2529181C2 (ru) * 2008-12-03 2014-09-27 РОКСТАР КОНСОРЦИУМ ЮЭс ЛП Система синхронизации времени с множественным резервированием
US8625572B2 (en) * 2008-12-19 2014-01-07 Nokia Corporation Synchronization indication in networks
US8799909B1 (en) * 2008-12-23 2014-08-05 Juniper Networks, Inc. System and method for independent synchronous and asynchronous transaction requests
US8472954B2 (en) 2008-12-26 2013-06-25 Sharp Kabushiki Kaisha Base station device, mobile station device, communication system, and communication method
WO2010110709A1 (en) * 2009-03-27 2010-09-30 Telefonaktiebolaget L M Ericsson (Publ) Methods and arrangements for enabling estimation of a position of a mobile terminal
CN107104780B (zh) 2009-10-01 2020-10-16 交互数字专利控股公司 上行链路控制数据传输
CN102083193B (zh) 2009-11-30 2016-09-28 中兴通讯股份有限公司 时分双工系统中网络节点的同步方法及系统
WO2011085230A2 (en) 2010-01-08 2011-07-14 Interdigital Patent Holdings, Inc. Channel state information transmission for multiple carriers
US9497764B2 (en) * 2013-07-15 2016-11-15 Qualcomm Incorporated Systems and methods for a data scrambling procedure
US10244453B2 (en) * 2015-10-13 2019-03-26 Qualcomm Incorporated Method and apparatus for inter-satellite handovers in low-earth orbit (LEO) satellite systems
CN107204928B (zh) * 2016-03-18 2021-06-08 华为技术有限公司 更新时钟同步拓扑的方法、确定时钟同步路径的方法及设备
EP3524010B1 (en) * 2016-10-07 2021-06-16 Telefonaktiebolaget LM Ericsson (PUBL) Controlling validity time of uplink grant in target cell during rach-less handover
EP3764585A4 (en) * 2018-04-04 2021-03-17 Huawei Technologies Co., Ltd. COMMUNICATION METHOD AND DEVICE
JP7150041B2 (ja) * 2018-10-12 2022-10-07 京セラ株式会社 基地局、管理装置、及び方法

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US5353332A (en) * 1992-09-16 1994-10-04 Ericsson Ge Mobile Communications Inc. Method and apparatus for communication control in a radiotelephone system
SE0003748D0 (sv) 2000-10-13 2000-10-13 Ericsson Telefon Ab L M Methods and arrangements relating to a radio communication system
JP3802372B2 (ja) * 2001-05-16 2006-07-26 株式会社エヌ・ティ・ティ・ドコモ 移動通信システム
CN100590991C (zh) * 2002-01-30 2010-02-17 Lg电子株式会社 利用可变时隙长度扰频分组数据的方法及其设备
JP4346996B2 (ja) 2003-08-29 2009-10-21 株式会社日立コミュニケーションテクノロジー 移動通信システム
WO2005067686A2 (en) * 2004-01-12 2005-07-28 Andrew Corporation Method and apparatus for synchronizing wireless location servers
BRPI0508765A (pt) 2004-03-31 2007-08-28 Sk Telecom Co Ltd método para handover entre rede de comunicação assìncrona e rede de comunicação assìncrona de terminal de comunicação móvel multimodo multibanda e de terminal de comunicação móvel para o mesmo
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US20060292982A1 (en) * 2005-06-24 2006-12-28 Lucent Technologies, Inc. Method for accomodating timing drift between base stations in a wireless communications system
US8313723B2 (en) 2005-08-25 2012-11-20 Nanocarbons Llc Activated carbon fibers, methods of their preparation, and devices comprising activated carbon fibers
KR100827064B1 (ko) 2006-01-18 2008-05-02 삼성전자주식회사 Ｏｆｄｍ 기반 셀룰러 무선통신시스템의 동기 신호 송신 방법 및 장치
US20070177605A1 (en) * 2006-01-30 2007-08-02 Benco David S Method for utilizing a backup timing source when GPS becomes nonfunctional
BRPI0712355B1 (pt) * 2006-06-13 2019-11-12 Qualcomm Inc transmissão de piloto em link reverso para um sistema de comunicação sem fio
WO2008013404A1 (en) 2006-07-25 2008-01-31 Electronics And Telecommunications Research Institute Cell search method, forward link frame transmission method, apparatus using the same and forward link frame structure
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Also Published As

Publication number Publication date
JP2010537583A (ja) 2010-12-02
KR20100056541A (ko) 2010-05-27
CN101785344A (zh) 2010-07-21
BRPI0815697A2 (pt) 2015-02-18
RU2010110810A (ru) 2011-09-27
AU2008288790A1 (en) 2009-02-26
US20090052430A1 (en) 2009-02-26
WO2009026557A3 (en) 2009-05-07
EP2198651A2 (en) 2010-06-23
CA2695013A1 (en) 2009-02-26
TW200917730A (en) 2009-04-16
WO2009026557A2 (en) 2009-02-26
US9467958B2 (en) 2016-10-11

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