公开(公告)号：EP1428339A1

公开(公告)日：2004-06-16

申请号：EP02798899.7

申请日：2002-04-15

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  ZEIRA, Ariela ,  GRIECO, Donald ,  SHIN, Sung-Hyuk

IPC: H04J3/00

CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/12 ,  H04W52/143 ,  H04W52/146 ,  H04W52/225 ,  H04W52/24

Abstract: The present invention is a system and method which controls outer loop transmit power for transmission power of an uplink/downlink communication in a spread spectrum time division communication. The system receives a communication from a base station (901) and determines an error rate (902) on the received communication. The system then distinguishes between static and dynamic channels, produces a static adjustment value (908), and characterizes the dynamic channels to generate a dynamic adjustment value. The target power level is then adjusted by the static and dynamic adjustment values, setting the transmission power level (912).

公开(公告)号：EP1565998B1

公开(公告)日：2010-06-23

申请号：EP03787235.5

申请日：2003-11-25

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  GRANDHI, Sudheer, A. ,  TERRY, Stephen, E.

IPC: H04B7/00

CPC classification number: H04W52/12 ,  H04W52/10 ,  H04W52/143 ,  H04W52/241 ,  H04W52/36 ,  H04W52/362 ,  H04W52/50

公开(公告)号：EP1570584B1

公开(公告)日：2009-08-26

申请号：EP03787086.2

申请日：2003-11-24

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  GRANDHI, Sudheer A. ,  MILLER, James, M. ,  SHIN, Sung-Hyuk

IPC: H04W52/22

CPC classification number: H04W52/221 ,  H04W52/08 ,  H04W52/20 ,  H04W52/223 ,  H04W52/225 ,  H04W52/24

Abstract: A method, components and a system are provided for implementing power control for wireless communication transmissions that provides, inter alia, a remedy for the mismatch of initial transmission power (312) for NRT data by estimating a bias error (324) based and adjusting the transmission power by a compensation amount for an averaged bias error estimation (323) over all data set transmissions, such as sequential Temp-DCH allocations in a UMTS system. An alternative approach for a UMTS system estimates the bias error at a RNC based on an averaged transmit code power measurement by a base station (310) and applies a bias error compensation to the initial DL transmit power at the RNC.

公开(公告)号：EP1779571A2

公开(公告)日：2007-05-02

申请号：EP05781896.5

申请日：2005-07-27

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  ZHANG, Guodong ,  OLESEN, Robert, Lind ,  TSAI, Yingming ,  HUANG, Yuejin

IPC: H04J11/00

CPC classification number: H04L5/0044 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0016 ,  H04L1/0026 ,  H04L5/0007 ,  H04L5/006 ,  H04W52/42

Abstract: A method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system are disclosed. The entire sub-channels are divided into a plurality of groups. A channel quality indicator (CQI) is generated for each group based on channel quality status in each group, and communication parameters are adjusted in accordance with the CQI.

Abstract translation: 公开了一种用于正交频分复用（OFDM）无线通信系统中的链路自适应的方法和系统。 整个子信道被分成多个组。 基于每个组中的信道质量状态为每个组生成信道质量指示符（CQI），并且根据CQI调整通信参数。

公开(公告)号：EP1565998A1

公开(公告)日：2005-08-24

申请号：EP03787235.5

申请日：2003-11-25

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： KOO, Chang-Soo ,  GRANDHI, Sudheer, A. ,  TERRY, Stephen, E.

IPC: H04B7/00

CPC classification number: H04W52/12 ,  H04W52/10 ,  H04W52/143 ,  H04W52/241 ,  H04W52/36 ,  H04W52/362 ,  H04W52/50

Abstract: A method, system, and components for outer loop power control (500) particularly useful for non-real time data services uses data transmitted in many short bursts of short duration, called Temp-DCH allocations (509). A target metric, preferably target SIR (502), is adjusted with differing step up and step down target metric adjustments. The initial target SIR (502) and the transient step size for target SIR adjustment (505-507) is determined in a dynamic way in the outer loop power control for each Temp-DCH allocation (509) of non-real time data.