公开(公告)号：US5835846A

公开(公告)日：1998-11-10

申请号：US571126

申请日：1995-12-12

申请人： Kenji Furukawa ,  Yasuki Nishi ,  Hiroshi Kobayashi ,  Yoshihisa Ohno ,  Eiji Kodama

发明人： Kenji Furukawa ,  Yasuki Nishi ,  Hiroshi Kobayashi ,  Yoshihisa Ohno ,  Eiji Kodama

IPC分类号： H04B7/005 ,  H04B7/185 ,  H04B7/26 ,  H04B17/00

CPC分类号： H04W52/228 ,  H04B7/18543 ,  H04W52/225

摘要： A transmission power control method in a mobile satellite communication system implementing accurate control of transmission power of a base station by obtaining an average received signal level at a mobile station at high accuracy. The mobile station measures an average received signal level Q.sub.k in a predetermined period (step SP2), and informs the base station of the average received signal level Q.sub.k and an actual measuring time T.sub.k (step SP3). The base station calculates a total measuring time t.sub.k which is the sum total of the actual measuring time T.sub.k (step SP16), a corrected average received signal level R.sub.k associated with the average received signal level during the total measuring time t.sub.k (step SP18), and a measuring error .DELTA.D.sub.k (step SP17), and controls the transmission power on the basis of these values (step SP21). Estimating the measuring error .DELTA.D.sub.k in the total measuring time t.sub.k longer than the individual actual measuring time T.sub.k makes it possible to reduce the measuring error, thereby implementing highly accurate transmission power control.

摘要翻译： 一种移动卫星通信系统中的发送功率控制方法，其通过以高精度获得移动站的平均接收信号电平来实现基站的发送功率的精确控制。 移动台在规定时间内测量平均接收信号电平Qk（步骤SP2），向基站通知平均接收信号电平Qk和实际测量时间Tk（步骤SP3）。 基站计算作为实际测量时间T k（步骤SP16）的总和的总测量时间tk，与总测量时间tk期间的平均接收信号电平相关联的校正平均接收信号电平Rk（步骤SP18） 和测量误差DELTA Dk（步骤SP17），并根据这些值控制发送功率（步骤SP21）。 在总测量时间tk中估计测量误差DELTA Dk比单个实际测量时间Tk长，可以减少测量误差，从而实现高精度的发射功率控制。

公开(公告)号：US5841767A

公开(公告)日：1998-11-24

申请号：US684230

申请日：1996-07-19

申请人： Yasuki Nishi ,  Kazuhito Ebina ,  Susumu Ueno

发明人： Yasuki Nishi ,  Kazuhito Ebina ,  Susumu Ueno

IPC分类号： H04B7/185 ,  H04W16/26 ,  H04W88/08 ,  H04W92/04 ,  H04J3/16

CPC分类号： H04W92/045 ,  H04B7/18563 ,  H04W16/26 ,  H04W88/085

摘要： A service area expansion scheme for a mobile communication system, capable of efficiently connecting thinly populated areas (satellite zones) to a mobile communication network so as to expand the service area of the mobile communication system economically. In expanding the service area, remote base stations are set at thinly populated areas, while a remote mobile local switching station for connecting the remote base stations to the mobile communication network is provided. The remote base stations and the remote mobile local switching station are selectively connected through the public network by using the respective channel connection units for providing connections with the public network. The remote base stations and the remote mobile local switching station can be replaced by satellite base stations and a satellite mobile local switching station for connecting the satellite base stations to the mobile communication network. The satellite base stations and the satellite mobile local switching station are selectively connected through the satellite by using the respective satellite connection units for providing connections with the satellite.

摘要翻译： 一种用于移动通信系统的服务区域扩展方案，能够将人口稀少的区域（卫星区域）有效地连接到移动通信网络，从而经济地扩展移动通信系统的服务区域。 在扩展服务区域中，远程基站设置在人口稀少的地区，而远程移动本地交换站用于将远程基站连接到移动通信网络。 通过使用相应的信道连接单元来提供与公共网络的连接，远程基站和远程移动本地交换站通过公共网络选择性地连接。 远程基站和远程移动本地交换站可以由卫星基站和用于将卫星基站连接到移动通信网络的卫星移动本地交换站来替代。 卫星基站和卫星移动本地交换站通过使用相应的卫星连接单元通过卫星选择性连接，以提供与卫星的连接。