发明名称 |
Transmission power control method for W-CDMA wireless communication systems |
摘要 |
<p>Disclosed are W-CDMA transmission power control methods in a wireless communication system in which power allocated to a pilot signal can be varied to at least a first power and a second power. The method includes the steps of: if a high-quality service call is made, setting the target quality to be larger than a convergence value so as to satisfy an initial pull-in characteristic, reducing the target quality by a prescribed amount if no error is detected whenever an error detection check is made and, when an error is detected, thenceforth measuring error rate at a target-quality update period that conforms to service quality, comparing the error rate measured and a required error rate, and updating the target quality based upon the result of the comparison; if a low-quality service call is made, setting the target quality to be larger than a value at which a dedicated control channel can be decoded correctly, measuring the error rate at a target-quality update period that conforms to service quality, comparing the error rate measured and a required error rate, and updating the target quality based upon the result of the comparison; and measuring the quality of a receive signal in parallel with control for updating target quality, and sending a transmission power control signal to the transmitting side in such a manner that the measured quality will agree with the target quality.</p> |
申请公布号 |
EP1798869(A2) |
申请公布日期 |
2007.06.20 |
申请号 |
EP20070104619 |
申请日期 |
2004.06.11 |
申请人 |
FUJITSU LTD.;NTT DOCOMO, INC. |
发明人 |
MURATA, SHUUICHI;KOBAYASHI, YUTAKA;TERASHIMA, YOSHIHIRO;OKAMOTO, SHINYA;UCHISHIMA, MAKOTO |
分类号 |
H04B7/005;H04B7/26;H04J13/00;H04W52/04;H04W52/50 |
主分类号 |
H04B7/005 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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