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    • 32. 发明申请
    • Multimode wireless terminal and wireless transmitter-receiver unit
    • 多模无线终端和无线收发单元
    • US20050032493A1
    • 2005-02-10
    • US10874459
    • 2004-06-22
    • Yoshikazu SugiyamaMasaki NodaMakoto KatagishiYutaka Igarashi
    • Yoshikazu SugiyamaMasaki NodaMakoto KatagishiYutaka Igarashi
    • H04B1/10H04B1/3822H04B1/40H04B17/18H04B17/29H04B17/382H04J3/00H04W24/08H04W36/36H04W76/02H04W88/02H04W88/10H04B1/38
    • H04B1/406H04B1/109
    • A multimode wireless terminal suitable for received level monitoring for a base station serving as an intersystem handover destination includes a first wireless transmitter-receiver unit for GSM, a second wireless transmitter-receiver unit for WCDMA, and a communication processor unit and an antenna switch unit connected to these wireless transmitter-receiver units. While conducting communication with a WCDMA network system via the second wireless transmitter-receiver unit, a level of a signal received from a GSM base station is monitored via the first wireless transmitter-receiver unit. A communication processor unit determines whether the level monitoring is interfered with by a WCDMA transmission signal, on the basis of a relation between a WCDMA transmission frequency and a reception frequency supplied from the GSM base station. If interference occurs, then the communication processor unit changes circuit characteristics of the first or second wireless transmitter-receiver unit, and thereby suppresses the interference.
    • 适用于作为系统间切换目的地的基站的接收电平监视的多模无线终端包括用于GSM的第一无线发射机 - 接收机单元,用于WCDMA的第二无线发射机 - 接收机单元,以及通信处理器单元和天线切换单元 连接到这些无线发射机 - 接收机单元。 在经由第二无线发射机 - 接收机单元与WCDMA网络系统进行通信时,经由第一无线发射机 - 接收机单元监测从GSM基站接收的信号的电平。 通信处理器单元基于WCDMA发送频率与从GSM基站提供的接收频率之间的关系来确定电平监视是否被WCDMA发送信号干扰。 如果发生干扰,则通信处理器单元改变第一或第二无线发射机 - 接收机单元的电路特性,从而抑制干扰。