Patent US6545991B1 successfully refreshed from Google Patents.
US6545991B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diversity method
Assignee: Panasonic Holdings Corp
•
Filing: 2000-08-25
•
Granted: 2003-04-08
•
Expires: 2020-08-25
Abstract
Abstract Spreading sections 104 and 105 of the base station spread the respective distributed data using mutually orthogonal spreading codes and they are transmitted from antennas 106 and 107 . Despreading sections 202 and 203 of the mobile station despread the received signals using the same spreading codes as those used at the base station, demodulation sections 204 and 205 demodulate the despread signals, received signal power measuring sections 207 and 208 measure their received signal powers from the demodulation result, received signal power measuring section 209 combines the measured received signal powers and transmit power control section 212 controls transmission power based on the combined received signal power. When carrying out diversity reception through a plurality of antennas at the base station, this suppresses transmit power control errors to a small level at the mobile station.
Inventors
- 👤 Takashi Kitade
- 👤 Kazuyuki Miya
- 👤 Katsuhiko Hiramatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:49
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/38; H04W52/42; H04B; H04B1/00; H04B1/69; H04B1/707; H04B17/00; H04B17/30; H04B17/309; H04B7/00; H04B7/02; H04B7/04; H04B7/0413; H04B7/0426; H04W52/18; H04W52/24; H04B7/06; H04B7/0613; H04B7/0615; H04B7/08; H04B7/0837; H04B7/0842
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
173 words
A base station apparatus that performs radio communications with a communication terminal apparatus that receives a plurality of signals, including spread portions, different from one another and transmitted in parallel from a plurality of antennas in the base station apparatus, to obtain a plurality of received signals, combines the plurality of received signals to obtain received data, measures received power for each of the plurality of antennas of the base station apparatus, combines the measured received power for the plurality of antennas of the base station apparatus, and transmits a signal to the base station apparatus while controlling transmit power based on the combined measured received power, said base station apparatus comprising: transmission circuitry that prepares said plurality of signals, including spread portions, different from one another for use by the communication terminal apparatus in measuring received power for each of the plurality of antennas of the base station apparatus; and said plurality of antennas that transmits said plurality of signals, including spread portions, different from one another to the communication terminal apparatus.
Claim 2
Dependent Claim
173 words
A base station apparatus that performs radio communications with a communication terminal apparatus that receives a plurality of signals, including spread portions, different from one another and transmitted in parallel from a plurality of antennas in the base station apparatus, to obtain a plurality of received signals, combines the plurality of received signals to obtain received data, measures received power for each of the plurality of antennas of the base station apparatus, combines the measured received power for the plurality of antennas of the base station apparatus, and transmits a signal to the base station apparatus while controlling transmit power based on the combined measured received power, said base station apparatus comprising: transmission circuitry that prepares said plurality of signals, including spread portions, different from one another for use by the communication terminal apparatus in measuring received power for each of the plurality of antennas of the base station apparatus; and said plurality of antennas that transmits said plurality of signals, including spread portions, different from one another to the communication terminal apparatus.
Claim 3
Dependent Claim
216 words
A base station apparatus that performs radio communications with a communication terminal apparatus having reception processing circuitry that receives a plurality of signals, including spread portions, different from one another and transmitted in parallel from a plurality of antennas in the base station apparatus, to obtain a plurality of received signals, and that performs reception processing including subjecting the received plurality of signals, having said spread portions, to despreading in different receiving sections respectively, combining the received plurality of signals having said spread portions subjected to despreading in the different receiving sections respectively to obtain received data, performing a measurement representing received power of the received plurality of signals for each of the receiving sections, and combining measured received power of the received plurality of signals for each of the receiving sections, and transmission circuitry that transmits a signal to the base station apparatus while controlling transmit power based on the combined measured received power, said base station apparatus comprising: transmission circuitry that prepares said plurality of signals, having said spread portions, different from one another for enabling the communication terminal apparatus to perform said measurement of received power in the respective receiving sections; and said plurality of antennas that transmits said signals, having said spread portions, different from one another to the communication terminal apparatus.
Claim 4
Dependent Claim
216 words
A base station apparatus that performs radio communications with a communication terminal apparatus having reception processing circuitry that receives a plurality of signals, including spread portions, different from one another and transmitted in parallel from a plurality of antennas in the base station apparatus, to obtain a plurality of received signals, and that performs reception processing including subjecting the received plurality of signals, having said spread portions, to despreading in different receiving sections respectively, combining the received plurality of signals having said spread portions subjected to despreading in the different receiving sections respectively to obtain received data, performing a measurement representing received power of the received plurality of signals for each of the receiving sections, and combining measured received power of the received plurality of signals for each of the receiving sections, and transmission circuitry that transmits a signal to the base station apparatus while controlling transmit power based on the combined measured received power, said base station apparatus comprising: transmission circuitry that prepares said plurality of signals, having said spread portions, different from one another for enabling the communication terminal apparatus to perform said measurement of received power in the respective receiving sections; and said plurality of antennas that transmits said signals, having said spread portions, different from one another to the communication terminal apparatus.
Claim 5
Dependent Claim
190 words
A transmission method in a base station apparatus that performs radio communications with a communication terminal apparatus that receives a plurality of signals, having spread portions, different from one another and transmitted in parallel from a plurality of antennas in the base station apparatus, to obtain a plurality of received signals, combines the plurality of received signals to obtain received data, measures received power for each of the plurality of antennas of the base station apparatus, combines the measured received power for the plurality of antennas of the base station apparatus, and transmits a signal to the base station apparatus while controlling transmit power based on the combined measured received power, said method comprising the steps of: providing said plurality of signals, having said spread portions, different from one another for use in measuring received power in the communication terminal apparatus to said antennas different from one another of said base station apparatus; and transmitting said plurality of signals, having said spread portions, different from one another for use in measuring received power in the communication terminal apparatus from said antennas different from one another of said base station apparatus.
Claim 6
Dependent Claim
190 words
A transmission method in a base station apparatus that performs radio communications with a communication terminal apparatus that receives a plurality of signals, having spread portions, different from one another and transmitted in parallel from a plurality of antennas in the base station apparatus, to obtain a plurality of received signals, combines the plurality of received signals to obtain received data, measures received power for each of the plurality of antennas of the base station apparatus, combines the measured received power for the plurality of antennas of the base station apparatus, and transmits a signal to the base station apparatus while controlling transmit power based on the combined measured received power, said method comprising the steps of: providing said plurality of signals, having said spread portions, different from one another for use in measuring received power in the communication terminal apparatus to said antennas different from one another of said base station apparatus; and transmitting said plurality of signals, having said spread portions, different from one another for use in measuring received power in the communication terminal apparatus from said antennas different from one another of said base station apparatus.
Claim 7
Dependent Claim
210 words
A transmission method in a base station apparatus that performs radio communications with a communication terminal apparatus that receives a plurality of signals, having spread portions, different from one another and transmitted in parallel from a plurality of antennas in the base station apparatus, to obtain a plurality of received signals, performs reception processing including subjecting the received plurality of signals, having said spread portions, to despreading in different receiving sections respectively, combining the received plurality of signals having said spread portions subjected to despreading in the different receiving sections respectively to obtain received data, performing a measurement of received power of said plurality of signals different from one another for each of the receiving sections, and combining measured received power of the received plurality of signals for each of the receiving systems, and transmits a signal to the base station apparatus while controlling transmit power based on the combined measured received power, said method comprising the steps of: providing said plurality of signals, having said spread portions, different from one another to said antennas different from one another of said base station apparatus; and transmitting the plurality of signals, having said spread portions, different from one another from said antennas different from one another of the base station apparatus.
Claim 8
Dependent Claim
210 words
A transmission method in a base station apparatus that performs radio communications with a communication terminal apparatus that receives a plurality of signals, having spread portions, different from one another and transmitted in parallel from a plurality of antennas in the base station apparatus, to obtain a plurality of received signals, performs reception processing including subjecting the received plurality of signals, having said spread portions, to despreading in different receiving sections respectively, combining the received plurality of signals having said spread portions subjected to despreading in the different receiving sections respectively to obtain received data, performing a measurement of received power of said plurality of signals different from one another for each of the receiving sections, and combining measured received power of the received plurality of signals for each of the receiving systems, and transmits a signal to the base station apparatus while controlling transmit power based on the combined measured received power, said method comprising the steps of: providing said plurality of signals, having said spread portions, different from one another to said antennas different from one another of said base station apparatus; and transmitting the plurality of signals, having said spread portions, different from one another from said antennas different from one another of the base station apparatus.
References Cited (Backward Citations)
JPH0870274A
Cited
US5652764A
Cited
EP0755127A2
Cited
JPH09238098A
Cited
JPH09102768A
Cited
JPH1098431A
Cited
US5872775A
Cited
EP0844743A2
Cited
WO1998027669A1
Cited
US6212364B1
Cited
US6097972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-04-07 | 2006-10-07 | 2007-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-04-07 | 2010-10-07 | 2011-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-04-07 | 2014-10-07 | 2015-04-08 | $7700.00 | Window Closed / Lapsed |