公开(公告)号：US20090069042A1

公开(公告)日：2009-03-12

申请号：US12044185

申请日：2008-03-07

申请人： Xiaohui Wang ,  Jonas Ohlsson ,  Magnus Ost

发明人： Xiaohui Wang ,  Jonas Ohlsson ,  Magnus Ost

IPC分类号： H04B7/005

CPC分类号： H04W52/12 ,  H04B2201/709727 ,  H04W52/20 ,  H04W52/241

摘要： Outer-loop power control methods and apparatus are disclosed. In an exemplary embodiment, a short-term block error rate is measured for a received signal, and a coarse adjustment to a target signal-to-interference ratio (SIR) is calculated as a function of the short-term block error rate, a target block error rate, and a first loop tuning parameter. In some embodiments, a fine adjustment to the target SIR is also calculated, as a function of a smoothed block error rate, the target block error rate, and a second loop tuning parameter. The coarse adjustment provides quick responsiveness to received block errors, while the fine adjustment moderates the coarse adjustments by accounting for a longer-term view of the received block error rate. The target SIR adjustments disclosed herein may be computed in each of several iterations of an outer-loop power control loop.

摘要翻译： 公开了外环功率控制方法和装置。 在示例性实施例中，针对接收信号测量短期块错误率，并且根据短期块错误率计算对目标信号干扰比（SIR）的粗略调整， 目标块错误率和第一个循环调整参数。 在一些实施例中，还根据平滑的块错误率，目标块错误率和第二环路调整参数来计算对目标SIR的精细调整。 粗略调整提供对接收到的块错误的快速响应，而微调通过考虑接收到的块错误率的长期视图来缓和粗调。 可以在外环功率控制回路的几次迭代中的每一个中计算本文公开的目标SIR调整。