公开(公告)号：US06452541B1

公开(公告)日：2002-09-17

申请号：US09788753

申请日：2001-02-20

申请人： Yilin Zhao ,  Hugh Wang

发明人： Yilin Zhao ,  Hugh Wang

IPC分类号： G01S514

CPC分类号： G01S19/235 ,  H04W56/0015

摘要： Satellite positioning system enabled mobile receivers (310) and cellular communication network base stations (330) synchronized with satellite positioning system clocks and method therefore. In a network-assisted embodiment, a variable propagation delay for transmission of an assistance message (232) from the base station to the mobile receiver is determined for correcting the handset clock (318). In others embodiments, local clock drift of mobile receivers (310) and/or base stations (330) are determined by a ratio of local and satellite time differences, based on sequential time snapshots, for use in correcting the local clocks.

摘要翻译： 卫星定位系统支持与卫星定位系统时钟同步的移动接收机（310）和蜂窝通信网络基站（330）。 在网络辅助实施例中，确定用于从基站向移动接收机发送辅助消息（232）的可变传播延迟，用于校正手机时钟（318）。 在其他实施例中，移动接收机（310）和/或基站（330）的本地时钟漂移由用于校正本地时钟的时间快照由本地和卫星时间差的比率确定。

公开(公告)号：US5893036A

公开(公告)日：1999-04-06

申请号：US791695

申请日：1997-01-30

申请人： Anhtuan Trandai ,  Hugh Wang ,  Wayne Huang ,  Gang Sun ,  Gregory R. Black ,  James G. Haerle

发明人： Anhtuan Trandai ,  Hugh Wang ,  Wayne Huang ,  Gang Sun ,  Gregory R. Black ,  James G. Haerle

IPC分类号： H04B7/005 ,  H04B7/00

CPC分类号： H04W52/367 ,  H04W52/50

摘要： A transmission power control method subdivides one or more transmission power steps as defined in a system specification into multiple sub-steps. A base station (290) instructs a mobile station (280) to use a defined power step, and the mobile station (280) initially selects a maximum power sub-step within the requested power step during an initial RACH (225) transmission. During the duration of the call, the mobile station (280) dynamically adjusts the power sub-step based on measured signal reception quality and channel conditions. The result is an improvement in call completion rates with only a minor reduction in battery life.

摘要翻译： 发送功率控制方法将系统规范中定义的一个或多个发送功率步骤细分成多个子步骤。 基站（290）指示移动站（280）使用定义的功率步长，并且移动站（280）在初始RACH（225）传输期间最初选择所请求功率步长内的最大功率子步长。 在呼叫期间，移动站（280）基于测量的信号接收质量和信道条件动态地调整功率子步长。 结果是呼叫完成率有所改善，电池寿命只有轻微的减少。