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    Method and apparatus for handoff between different cellular communication systems
    61.
    发明专利
    Method and apparatus for handoff between different cellular communication systems 未知

    公开(公告)号：ZA958574B

    公开(公告)日：1996-05-23

    申请号：ZA958574

    申请日：1995-10-11

    Applicant: QUALCOMM INC

    Inventor： GILHOUSEN KLEIN S ,  KARMI GADI ,  TIEDEMANN EDWARD G JR ,  HOLCMAN ALEJANDRO R

    IPC: H04W36/14 ,  H04W36/18 ,  H04B ,  H04J ,  H04L ,  H04Q

    Abstract: A method and system for performing an intersystem handoff of communication with a mobile station between base stations of first and second cellular systems is disclosed herein. At the mobile station, a quantifiable parameter of a signal transmitted by a second base station of the second system is measured. When the measured value of the quantifiable parameter passes through a first predetermined level, the mobile station communicates a signal quality message via a first base station of the first system to a first mobile switching control station. A channel request message is then communicated from the first mobile switching control station to a second mobile switching control station within the second system. At the second base station, a quantifiable parameter of the signal received from the mobile station is also measured. The second base station establishes communication with the mobile station when the measured value of the quantifiable parameter passes through a predetermined level. Alternately, the signal strength of a first pilot signal transmitted by the first base station is measured at the mobile station. A handoff request message is then sent to the second base station when the measured signal strength of the first pilot signal becomes less than a second predetermined level, thereby mobile station communication to be established. The provision of a voice link between the mobile switching control stations allows for the forwarding of an existing connection between the first and second cellular systems, and enables the performance of soft intersystem handoffs.

    NETWORK TERMINAL WITH A LOW DUTY CYCLE
    64.
    发明申请
    NETWORK TERMINAL WITH A LOW DUTY CYCLE 审中-公开
    具有低占空比的网络终端

    公开(公告)号：WO2007149993A3

    公开(公告)日：2008-03-06

    申请号：PCT/US2007071808

    申请日：2007-06-21

    Applicant: QUALCOMM INC ,  LEE CHONG U ,  HOLCMAN ALEJANDRO R ,  STEIN JEREMY M ,  REZAIIFAR RAMIN ,  ARYAN BABAK

    Inventor： LEE CHONG U ,  HOLCMAN ALEJANDRO R ,  STEIN JEREMY M ,  REZAIIFAR RAMIN ,  ARYAN BABAK

    IPC: H04B1/16

    CPC classification number: H04W56/0015 ,  H04B7/24 ,  H04J3/06 ,  H04W52/028 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/164 ,  Y02D70/448

    Abstract: Operating at least one low duty cycle (LDC) controller to maintain synchronization between the LDC controller and a plurality of LDC terminals operating over a communication network using only overhead channels of the network and conforming to the protocol and timing of said network, wherein synchronization between the LDC controller and the plurality of LDC terminals is maintained separately from the protocol and timing of the communication network, and enables the LDC controller to schedule power down and wake up of the plurality of LDC terminals for durations longer than allowable under the protocol and timing of the communication network.

    Abstract translation: 操作至少一个低占空比（LDC）控制器，以维持LDC控制器与通过网络运行的多个LDC终端之间的同步，仅使用网络的开销信道并符合所述网络的协议和定时，其中， LDC控制器和多个LDC终端与通信网络的协议和定时分开地保持，并且使LDC控制器能够调度多个LDC终端的停电和唤醒持续时间长于协议和定时下允许的持续时间 的通信网络。

    NETWORK OPERATOR IDENTIFICATION FOR CDMA COMMUNICATION NETWORKS
    65.
    发明申请
    NETWORK OPERATOR IDENTIFICATION FOR CDMA COMMUNICATION NETWORKS 审中-公开
    网络操作员识别CDMA通信网络

    公开(公告)号：WO2004105267A3

    公开(公告)日：2005-05-26

    申请号：PCT/US2004015629

    申请日：2004-05-18

    Applicant: QUALCOMM INC ,  COOPER ROTEM ,  HOLCMAN ALEJANDRO R ,  HUNTER ANDREW T ,  TIEDEMANN EDWARD G ,  UCHIDA NOBUYUKI ,  KRIPALANI VERA

    Inventor： COOPER ROTEM ,  HOLCMAN ALEJANDRO R ,  HUNTER ANDREW T ,  TIEDEMANN EDWARD G ,  UCHIDA NOBUYUKI ,  KRIPALANI VERA

    IPC: H04L12/56 ,  H04W8/18 ,  H04W8/26 ,  H04W48/08 ,  H04W48/16 ,  H04W48/18 ,  H04W74/00 ,  H04Q7/32

    CPC classification number: H04W8/26 ,  H04W8/183 ,  H04W48/08 ,  H04W48/16 ,  H04W48/18 ,  H04W74/00

    Abstract: A network operator identifier is used to uniquely identify each network operator to support international roaming. The network operator identifier includes (1) a Mobile Country Code (MCC) that identifies the country in which a network operator belongs and (2) a Network Operator Code (NOC), which may be a Mobile Network Code (MNC), that distinguishes network operators within a given MCC. Each network operator is assigned a unique combination of MCC and NOC that distinctly identifies the network operator, and the network operator identifier can be stored in a single entry in a preferred roaming list. The base stations of each network operator broadcast the network operator identifier in signaling messages. A mobile station receives a signaling message from a base station, obtains the network operator identifier, searches its preferred roaming list for an entry with the network operator identifier, and determines whether or not the current CDMA network is accessible.

    Abstract translation: 网络运营商标识符用于唯一标识每个网络运营商以支持国际漫游。 网络运营商标识符包括（1）识别网络运营商所属国家的移动国家代码（MCC）和（2）可能是移动网络代码（MNC）的网络运营商代码（NOC），其区分 指定MCC内的网络运营商。 为每个网络运营商分配MCC和NOC的唯一组合，其明确地标识网络运营商，并且网络运营商标识符可以存储在优选漫游列表中的单个条目中。 每个网络运营商的基站在信令消息中广播网络运营商标识符。 移动台从基站接收信令消息，获取网络运营商标识符，在其首选漫游列表中搜索具有网络运营商标识符的条目，并确定当前的CDMA网络是否可访问。

    HANDOFF IN A HYBRID COMMUNICATION NETWORK
    67.
    发明公开
    HANDOFF IN A HYBRID COMMUNICATION NETWORK 审中-公开
    FAR实现了混合通信网络

    公开(公告)号：EP1451949A4

    公开(公告)日：2008-06-04

    申请号：EP02804749

    申请日：2002-12-05

    Applicant: QUALCOMM INC

    Inventor： RIMONI YORAM ,  HOLCMAN ALEJANDRO R

    IPC: H04J13/00 ,  H04W36/14 ,  H04W36/30 ,  H04B7/216

    CPC classification number: H04W36/14 ,  H04W36/30

    Abstract: A method of effecting handoff of a mobile station from a first base station in a first cellular communications system (46) controlled by a first mobile switching control station to a second base station in a second, different cellular system (48) controlled by a second mobile switching control station is described. The method comprises measuring at the mobile station a parameter of a signal transmitted by said first base station and a parameter of a signal transmitted by said second base station. When the parameters reach a predetermined condition, a signal quality message is communicated from the mobile station via the first base station to said first mobile switching control station, which responds by generating information for a channel request message for the second mobile switching control station and transmitting the same to the mobile station.

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