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    • 5. 发明公开
    • WIRELESS BASE STATION NETWORK SYSTEM, CONTROL STATION, BASE STATION SWITCHING METHOD, SIGNAL PROCESSING METHOD, AND HANDOVER CONTROL METHOD
    • 基础设施网络系统,STEUERUNGSSTATION,BASISSTATIONSVERMITTLUNGSVERFAHREN,SIGNALVERARBEITUNGSVERFAHREN SOWIE WEITERREICHUNGSSTEUERVERFAHREN
    • EP1250018A1
    • 2002-10-16
    • EP01926153.6
    • 2001-05-08
    • NTT DoCoMo, Inc.
    • ABURAKAWA, YujiYOSHINO, HitoshiOTSU, ToruYAMAO, Yasushi
    • H04Q7/24H04J14/02
    • H04B10/25756H04J14/02H04J14/0227H04J14/0241H04J14/0283H04J14/0284H04J14/0286
    • The present invention is a network system of radio base stations comprising base stations provided in a plurality of cells and a control station controlling the base stations, in which the base stations and the control station are connected by optical fibers using a wavelength multiplexing transmission method, wherein: the base station comprises a variable-wavelength transmitter for transmitting an optical signal having a predetermined wavelength, and an optical coupler for combining optical signals from the variable-wavelength transmitter in order to transmit the optical signals using the wavelength multiplexing transmission method, the control station comprises a plurality of optical receivers for receiving wavelengths of the optical signals transmitted using the wavelength multiplexing transmission method, and an optical coupler for splitting the wavelength-multiplexed optical signals transmitted from the base stations into the optical receivers by wavelength, and when the radio communication terminal communicating with the base station moves and changes the base station to communicate with, a new base station which communicates with the radio communication terminal after a movement of the radio communication terminal controls the wavelength of the variable-wavelength transmitter, and then transmits the optical signals to the control station with the same wavelength as one used for transmitting by a previous base station which communicates with the radio communication terminal before the movement.
    • 其中布置在多个小区的基站和用于控制基站的控制站的无线基站网络系统通过光纤通过波分复用传输连接。 基站设置有用于发送预定波长的光信号的波长可变发射机,以及用于复用来自用于波分复用传输的波长可变发射机的光信号的光耦合器。 控制站设置有多个光接收器,用于接收光信号的分频复用波长,以及光耦合器,用于将已经从多个基站划分和多路复用的光信号分别分配到波长。 无线通信终端与哪里通信。
    • 9. 发明公开
    • LOCATION TRACKING USING FIBER OPTIC ARRAY CABLES AND RELATED SYSTEMS AND METHODS
    • STANDORTVERFOLGUNG MIT GLASFASERKABELN SOWIEZUGEHÖRIGESYSTEME UND VERFAHREN
    • EP2457338A1
    • 2012-05-30
    • EP10737179.1
    • 2010-07-19
    • Corning Cable Systems LLC
    • GEORGE, JacobSAUER, MichaelTHELEN, Dean M.
    • H04B10/12G02B6/42G02B6/44H04B7/08
    • H04W4/023G01S5/14H04B10/25754H04B10/25756H04B10/808H04W16/26H04W84/12
    • Fiber optic array cables and related systems and methods to determine and/or track locations of objects are disclosed. The fiber optic array cables can be employed in an optical-fiber-based communication system, including a centralized optical-fiber based communication system. In one embodiment, the fiber optic array cable is configured to carry optical RF or radio-over-fiber (RoF) signals to establish communications with objects. The fiber optic array cable includes multiple reference units along the length of the cable. The reference units can be configured to convert received optical RF signals into electrical RF signals to establish RF communications with objects capable of receiving electrical RF signals. The reference units are also configured to convert received electrical RF signals from the objects into optical RF signals, which are then used to determine the location of the object. Having the availability of the multiple reference units on one or more the fiber optic array cables can provide enhanced reliability in tracking objects.
    • 公开了用于确定和/或跟踪物体位置的光纤阵列电缆及相关系统和方法。 光纤阵列电缆可以用在基于光纤的通信系统中,包括基于集中式光纤的通信系统。 在一个实施例中,光纤阵列电缆被配置为承载光学RF或无线电光纤(RoF)信号以建立与对象的通信。 光纤阵列电缆包括沿电缆长度的多个参考单元。 参考单元可以被配置为将接收的光学RF信号转换成电RF信号,以与能够接收电RF信号的对象建立RF通信。 参考单元还被配置为将来自物体的接收的电RF信号转换成光RF信号,然后将其用于确定物体的位置。 在一个或多个光纤阵列电缆上具有多个参考单元的可用性可以提供跟踪对象的增强的可靠性。