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    • 22. 发明申请
    • METHOD AND APPARATUS FOR DETECTING AN ALTERNATE WIRELESS COMMUNICATION NETWORK
    • 用于检测替代无线通信网络的方法和装置
    • US20090104907A1
    • 2009-04-23
    • US11877073
    • 2007-10-23
    • MARCIA J. OTTINGTIMOTHY M. BURKEROBERT F. D'AVELLOPHILLIP D. RASKYJAMES E. MATHIS
    • MARCIA J. OTTINGTIMOTHY M. BURKEROBERT F. D'AVELLOPHILLIP D. RASKYJAMES E. MATHIS
    • H04Q7/20
    • H04W48/10H04W48/14H04W48/16H04W88/06
    • A method for selecting an alternate wireless communication system for a wireless communication device is disclosed. The method comprises using a first radio access technology (RAT) by a wireless communication device when scanning (202) for an initial wireless communication network (201). The wireless communication device further registers (215) to the initial wireless communication network (201). Then, the initial wireless communication network (201) determines (206) alternate RAT wireless communication network information for the wireless communication device and sends (235) the alternate RAT wireless communication network information to the wireless communication device. The wireless communication device receives the alternate RAT wireless communication network information and selects (240) a first alternate wireless communication network from within the alternate RAT wireless communication network information, scans for the first alternate wireless communication network using an alternate RAT and registers with the first alternate wireless communication network using the alternate RAT.
    • 公开了一种用于选择用于无线通信设备的替代无线通信系统的方法。 该方法包括当扫描(202)初始无线通信网络(201)时,由无线通信设备使用第一无线电接入技术(RAT)。 无线通信设备进一步向初始无线通信网络(201)注册(215)。 然后,初始无线通信网络(201)确定(206)用于无线通信设备的替代RAT无线通信网络信息,并将替代的RAT无线通信网络信息(235)发送到无线通信设备。 无线通信设备接收替代RAT无线通信网络信息,并从替代RAT无线通信网络信息内选择(240)第一替代无线通信网络,使用替代RAT对第一替代无线通信网络进行扫描,并向第一 使用替代RAT的备用无线通信网络。
    • 27. 发明授权
    • Communication system receiver apparatus and method for fast carrier
acquisition
    • 用于快速载波采集的通信系统接收机装置和方法
    • US5233632A
    • 1993-08-03
    • US698765
    • 1991-05-10
    • Kevin L. BaumDavid E. BorthPhillip D. Rasky
    • Kevin L. BaumDavid E. BorthPhillip D. Rasky
    • H04B1/30
    • H04B1/30
    • A communications system receiver (100) is disclosed which receives a transmitted signal over a radio channel. The transmitted signal includes data and a predetermined synchronization sequence. The receiver (100) includes a demodulator (215), and a stored replica (207) of the predetermined synchronization sequence. The receiver (100) further includes apparatus (102) for computing (308) a reconstructed signal, by using the channel impulse response characteristic and the stored replica (207) of the synchronization sequence. A feature of the invention is to estimate (310) a phase offset value between an incoming signal and the reconstructed signal, for a plurality of synchronization symbols. This serves to establish (315) a relationship between the phase offset and a synchronization symbol index. The receiver then employs this relationship to derive (317) at least one "previous" phase state (214) for initializing (314) the demodulator (215).
    • 公开了一种通过无线电信道接收发射信号的通信系统接收机(100)。 所发送的信号包括数据和预定的同步序列。 接收器(100)包括解调器(215)和预定同步序列的存储副本(207)。 接收器(100)还包括用于通过使用信道脉冲响应特性和存储的同步序列副本(207)来计算(308)重构信号的装置(102)。 本发明的一个特征是针对多个同步符号来估计(310)输入信号和重构信号之间的相位偏移值。 这用于建立(315)相位偏移和同步符号索引之间的关系。 接收机然后采用这种关系来导出(317)用于初始化(314)解调器(215)的至少一个“先前”相位状态(214)。