CN1149874C - 多频带移动通信站和搜索多个频带的方法 - Google Patents

多频带移动通信站和搜索多个频带的方法 Download PDF

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Publication number
CN1149874C
CN1149874C CNB981148476A CN98114847A CN1149874C CN 1149874 C CN1149874 C CN 1149874C CN B981148476 A CNB981148476 A CN B981148476A CN 98114847 A CN98114847 A CN 98114847A CN 1149874 C CN1149874 C CN 1149874C
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network
mobile communication
communication station
time
interval
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Expired - Fee Related
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CN1239388A (zh
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M・格雷伊森
M·格雷伊森
C·约因
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LENOVO INNOVATIONS Co.,Ltd.(HONG KONG)
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NEC Corp
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Priority to GB9625872A priority Critical patent/GB2320399B/en
Priority to US09/062,897 priority patent/US6192224B1/en
Priority to AU63507/98A priority patent/AU6350798A/en
Priority to EP98107300A priority patent/EP0952745B1/en
Application filed by NEC Corp filed Critical NEC Corp
Priority to CNB981148476A priority patent/CN1149874C/zh
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    • 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18563—Arrangements for interconnecting multiple systems
    • 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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0258—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
    • 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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
    • H04W52/0287—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level changing the clock frequency of a controller in the equipment
    • 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
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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

Abstract

公开了用于多网络环境中的移动通信站。移动通信站包括一个能够在不同网络所使用的多个不同频带工作的无线接收机，网络参考数据存储设备，用于存储识别每个网络的优先级的数据，至少有一个网络是优选网络，和一个搜寻控制设备，根据参考数据确定每个网络被搜寻的搜寻频率。

Description

多频带移动通信站和搜索多个频带的方法
技术领域
本发明涉及用于多网络环境中的多频带移动通信站，例如在有一个地面基站网络和绕轨卫星站网络的环境中，以及搜索多个频带的方法。
背景技术
需要移动站能够确定它何时处于地面基站或绕轨卫星站所覆盖的区域中，但是使移动站能够搜寻这些站所需的操作非常耗电。
发明内容
因此本发明的一个目的是提供一种多频带移动通信站和一种搜索多频带的方法，以便通过确定当该移动通信站处于不同区域时具有不同的搜索频率。
根据本发明的一种移动通信站，包括：多个RF级，用于工作在不同网络所使用的多个不同频带；DSP，用于建立一个基于时间的搜索时间间隔；和，CPU，用于根据优选数据确定在一个预定的时间间隔内每个网络要被搜索的次数，其中，所述DSP根据所述移动通信站是驻留在一个信道上还是工作于一种区域外模式而改变所述用于搜索每个网络的基于时间的搜索时间间隔。
搜寻控制设备最好根据在先前搜寻中所发现的网络站而改变搜寻策略。例如，在GSM/卫星双模式移动站中，搜寻控制设备通常将卫星搜寻频率降到最低。当移动站不在任何GSM或卫星基站的覆盖区域中时，卫星和GSM扫描的频率都将增加。当移动站不在任何GSM站的覆盖范围之内而仍在卫星网络的覆盖范围之内时，GSM扫描的频率将降低。
根据本发明的一种搜索不同网络所使用的多个不同频带的方法，所述方法包括：确定一个移动站当前工作在一种区域外模式还是驻留在一个信道上；和，根据所述确定来改变用于每个网络的基于时间的搜索时间间隔。
由于当移动通信站处于不同区域中时的搜索频率不同，所以通过降低搜索频率可达到节省电力的效果。
附图说明
本发明的上述和其它目的，特征和益处将通过参考附图对示例的描述而变得显而易见。
图1是多模式多频带移动通信站的框图。
图2是在移动站中用于控制扫描操作的软件的流程图。
具体实施方式
图1表示移动电话的基本框图，即用于接收和发送的RF级10，包括频率转换部件和滤波，校正，DAC和ADC功能的接口级11，实现语音编码和解码及改变频率控制和同步算法的DSP12，根据在ROM14和SIM模块(个人ID卡)15中存储的数据对电话的功能进行控制的CPU。
CPU对附近地面基站和卫星站的扫描时间进行响应。在扫描操作中，CPU命令DSP扫描一个TDMA桢中的多达三个频率值。CPU给DSP提供三个频率值以供检查并逐步扫描整个地面频带。这一周期将继续进行直到有一个对于在RF级建立AGC足够强的被检测信号为至，并随后RSSI电平被接收到。CPU将频率按照RSSI电平递增的顺序排列。如果其中任何一个高于一个域值，CPU就命令DSP同步到该信道上，DSP试图通过首先将其操作同步到发送的精确时间和频率来解码同步脉冲。如果成功了，CPU就将其登记移动站就离开区域外(OOZ)操作并“驻留”(camp)在发现的信道上。
地面和卫星频带中的操作涉及不同的RF调谐过程和不同的信道识别和信号解码协议。因此，当搜索地面信道时，DSP，接口和RF级必需工作在同一模式，而在搜寻卫星信道时同样的模块必须工作在不同的模式。图1表示每个框具有模式控制开关10a，11a，12a的框10，11，12由CPU控制以便在必要时使模块在不同的模式之间切换。
CPU被编程以赋予地面操作以优先级。网络优选数据被存储在CPU的ROM(最好是EEPROM)中或者在SIM中作为存储器中连续地址处的网络列表。该列表可以包括网络的名子，诸如GSM900MHZ，GSM1800MHZ，卫星或网络名的标记，网络被以优选顺序排列。在这个所述的例子中，GSM900MHz是最优选的网络而卫星是最不希望的网络。这种优先级排列示于图2。如所示，根据移动站当前处于OOZ操作还是驻留在卫星或地面信道的判定，CPU命令DSP以不同的间隔进行搜索。如果移动站处于OOZ操作，就每30秒进行一次地面搜索而每2分钟进行一次卫星搜索。如果移动站驻留在卫星网络信道，就每两分钟搜索一次地面频带。如果移动站驻留在地面信道，就每5分钟搜索一次卫星频带。
本领域一般技术人员将明白上述原理可以扩展到能够工作在三个或更多频带的且工作在三个或更多模式的移动站。
尽管已经用特定术语描述了本发明的优选实施例，这种描述只是出于说明的目的，应当理解可以在不背离本发明精神的前提下有各种该变和变型。

Claims (4)

1.一种移动通信站，包括：
多个RF级，用于工作在不同网络所使用的多个不同频带；
DSP，用于建立一个基于时间的搜索时间间隔；和
CPU，用于根据优选数据确定在一个预定的时间间隔内每个网络要被搜索的次数，
其中，所述DSP根据所述移动通信站是驻留在一个信道上还是工作于一种区域外模式而改变所述用于搜索每个网络的基于时间的搜索时间间隔。
2.根据权利要求1所述的移动通信站，其中，当所述移动通信站工作于一种区域外模式时，所述DSP较其它网络更频繁地搜索一个优选网络。
3.一种搜索不同网络所使用的多个不同频带的方法，所述方法包括：
确定一个移动站当前工作在一种区域外模式还是驻留在一个信道上；和
根据所述确定来改变用于每个网络的基于时间的搜索时间间隔。
4.根据权利要求3所述的方法，其中，当所述移动通信站工作于一种区域外模式时，较其它网络更频繁地搜索一个优选网络。
CNB981148476A 1996-12-12 1998-06-11 多频带移动通信站和搜索多个频带的方法 Expired - Fee Related CN1149874C (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB9625872A GB2320399B (en) 1996-12-12 1996-12-12 Multi-band mobile telecommunications station
US09/062,897 US6192224B1 (en) 1996-12-12 1998-04-21 Multi-band mobile telecommunications station
AU63507/98A AU6350798A (en) 1996-12-12 1998-04-21 Multi-band mobile telecommunications station
EP98107300A EP0952745B1 (en) 1996-12-12 1998-04-22 Multi-band mobile telecommunications station
CNB981148476A CN1149874C (zh) 1996-12-12 1998-06-11 多频带移动通信站和搜索多个频带的方法

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9625872A GB2320399B (en) 1996-12-12 1996-12-12 Multi-band mobile telecommunications station
US09/062,897 US6192224B1 (en) 1996-12-12 1998-04-21 Multi-band mobile telecommunications station
AU63507/98A AU6350798A (en) 1996-12-12 1998-04-21 Multi-band mobile telecommunications station
EP98107300A EP0952745B1 (en) 1996-12-12 1998-04-22 Multi-band mobile telecommunications station
CNB981148476A CN1149874C (zh) 1996-12-12 1998-06-11 多频带移动通信站和搜索多个频带的方法

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CN1149874C true CN1149874C (zh) 2004-05-12

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EP (1) EP0952745B1 (zh)
CN (1) CN1149874C (zh)
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Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2320399B (en) * 1996-12-12 2001-08-22 Nec Technologies Multi-band mobile telecommunications station
WO1998039859A1 (fr) * 1997-03-04 1998-09-11 Mitsubishi Denki Kabushiki Kaisha Terminal telephonique mobile double mode
JP3866103B2 (ja) * 1999-09-13 2007-01-10 三菱電機株式会社 移動体通信システム、基地局、移動体通信端末及び移動体通信方法
DE10023407A1 (de) * 2000-05-12 2001-11-15 Anthony C Thuns Mobiltelefon
JP3791369B2 (ja) * 2001-08-30 2006-06-28 株式会社デンソー 無線通信端末、コンピュータプログラムおよび検索情報の送信方法
GB2380898B (en) * 2001-10-09 2004-01-14 Motorola Inc Communication network location register and subscriber device
GB2396080B (en) * 2002-11-26 2006-03-01 Nec Technologies Improvements in standby time for dual mode mobile communication devices
US6961569B2 (en) * 2003-05-07 2005-11-01 Motorola Inc Method for a radiotelephone to scan for higher priority public land mobile network
US20040224684A1 (en) * 2003-05-07 2004-11-11 Dorsey Donald A. Method for a radiotelephone to search for higher priority networks
WO2005048475A1 (en) * 2003-11-05 2005-05-26 Thomson Licensing Network aware mobile devices and operations
US20050239500A1 (en) * 2004-04-05 2005-10-27 Haixian Liu Method and apparatus for dual mode mobile handset
JP4534695B2 (ja) * 2004-09-28 2010-09-01 日本電気株式会社 移動通信端末装置及びその周波数検出方法
US7756490B2 (en) * 2005-03-08 2010-07-13 Atc Technologies, Llc Methods, radioterminals, and ancillary terrestrial components for communicating using spectrum allocated to another satellite operator
CN100399849C (zh) * 2005-03-31 2008-07-02 联想(北京)有限公司 多模通信设备的多模共存方法
DE102005033464A1 (de) * 2005-07-18 2007-02-01 Siemens Ag Kommunikationsendgerät und Verfahren zum Bestimmen aktuell verfügbarer Mobilfunknetzwerke
CN100387068C (zh) * 2006-01-16 2008-05-07 华为技术有限公司 移动通信系统及其方法
GB0721307D0 (en) 2007-10-30 2007-12-12 Nokia Siemens Networks Oy Measuring apparatus
US8443063B1 (en) 2011-01-24 2013-05-14 Sprint Communications Company L.P. Determination of communication networks for a wireless communication device
US9526083B2 (en) * 2012-12-27 2016-12-20 Intel Corporation Cellular network scanning control based on ambient identifiable wireless signal sources

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303286A (en) * 1991-03-29 1994-04-12 Space Systems/Loral, Inc. Wireless telephone/satellite roaming system
CA1282837C (en) * 1987-03-20 1991-04-09 Tetsuya Hanawa Apparatus for selecting control channel in mobile communication system
US4916728A (en) * 1988-07-25 1990-04-10 Gte Mobilnet Incorporated Cellular telephone unit with prioritized frequency acquisition
US5159625A (en) * 1990-10-24 1992-10-27 Gte Mobile Communications Service Corp. Method of selecting the cellular system with which a cellular mobile radiotelephone communicates
US5526404A (en) * 1991-10-10 1996-06-11 Space Systems/Loral, Inc. Worldwide satellite telephone system and a network coordinating gateway for allocating satellite and terrestrial gateway resources
US5260988A (en) * 1992-02-06 1993-11-09 Motorola, Inc. Apparatus and method for alternative radiotelephone system selection
FR2699357B1 (fr) 1992-12-16 1995-01-13 Alcatel Radiotelephone Dispositif de recherche de connexion d'un terminal à un réseau d'un système de radiocommunication comprenant plusieurs réseaux.
JP2990992B2 (ja) * 1993-03-18 1999-12-13 三菱電機株式会社 衛星通信端末
US5517677A (en) * 1993-05-13 1996-05-14 Uniden America Corporation Adaptive weighting of a scanning sequence
US5590395A (en) * 1993-11-10 1996-12-31 Motorola, Inc. Satellite cellular network resource management method and apparatus
US5590397A (en) * 1993-12-17 1996-12-31 Nec Corporation Selecting and prioritizing radio telephone systems at radio terminal
US6119003A (en) * 1996-09-09 2000-09-12 Nokia Mobile Phones Limited Methods and apparatus for performing automatic mode selection in a multimode mobile terminal
GB2320399B (en) 1996-12-12 2001-08-22 Nec Technologies Multi-band mobile telecommunications station
US5918157A (en) * 1997-03-18 1999-06-29 Globalstar L.P. Satellite communications system having distributed user assignment and resource assignment with terrestrial gateways

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AU6350798A (en) 1999-10-28
EP0952745A1 (en) 1999-10-27
US6192224B1 (en) 2001-02-20
EP0952745B1 (en) 2005-09-28
CN1239388A (zh) 1999-12-22
GB2320399A (en) 1998-06-17
GB2320399B (en) 2001-08-22
GB9625872D0 (en) 1997-01-29

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