EP0955736A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and apparatus for providing power control in a multi-carrier wide band CDMA system
Assignee: Nokia Oyj
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Filing: 1999-05-06
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Granted: —
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Expires: 2019-05-06
Abstract
Abstract A wireless telecommunications system includes at least one base station, at least one mobile station, and power control circuitry implemented in the base station and the mobile station. N/X power control indications sent from the mobile station to the base station are used to provide closed loop power control to N subchannels, where N is a total number of subchannels in use between the base station and the mobile station, and where X is a positive integer having a value within a range greater than or equal to one and less than N such that N/X, in one case, is an integer number. In one embodiment each of the N subchannels is transmitted through a separate one of N adjustable gain stages, and N/X power control indications generated at the mobile station are employed to vary the gain of the N adjustable gain stages. In another embodiment a plurality of adjustable gain stages associated with a plurality of subchannels are controlled using a same gain control signal. In the presently preferred, but not limiting embodiment, the system is a wideband, multi-carrier spread spectrum system, and the N subchannels can be overlaid on up to N other carriers.
Inventors
- 👤 Antti Kansakoski
- 👤 Jean-Marie Tran
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/28; H04W52/286; H04W52/06; H04W52/08; H04W52/38; H04W52/42; H04W52/52
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
105 words
A wireless telecommunications system, comprising: at least one base station; at least one mobile station; and power control circuitry implemented in said base station and said mobile station wherein N/X power control indications sent from said mobile station to said base station are used to provide closed loop power control to individual ones or groups of subchannels, wherein N is a total number of subchannels in use between said base station and said mobile station, and wherein X is a positive integer having a value within a range greater than or equal to one and less than N such that N/X is an integer number.
Claim 2
Dependent Claim
49 words
A wireless telecommunications system as in claim 1, wherein each of the N subchannels is transmitted through a separate one of N adjustable gain stages, and wherein the N/X power control indications generated at said mobile station are employed to vary the gain of the N adjustable gain stages.
Claim 3
Dependent Claim
32 words
A wireless telecommunications system as in claim 1 or 2, wherein a plurality of adjustable gain stages associated with a plurality of adjacent subchannels are power controlled using one gain control signal.
Claim 4
Dependent Claim
21 words
A wireless telecommunications system as in claim 1, 2 or 3 wherein the system is a wideband, multi-carrier spread spectrum system.
Claim 5
Dependent Claim
26 words
A wireless telecommunications system as in any one of claims 1 to 4, wherein at least one of the N subchannels is overlaid on another carrier.
Claim 6
Independent Claim
132 words
A method of operating a wireless telecommunications system, comprising steps of: providing at least one base station and at least one mobile station; transmitting N subchannels from the base station to the mobile station; deriving, in the mobile station, NIX power control indications for the N subchannels, wherein N is a total number of subchannels transmitted from the base station to the mobile station, and wherein X is a positive integer having a value within a range greater than or equal to one and less than N such that N/X is an integer number; transmitting the N/X power control indications back to the base station; and providing, in the base station, closed loop power control for individual ones or groups of the N subchannels in accordance with the N/X power control indications.
Claim 7
Dependent Claim
47 words
A method as in claim 6, wherein each of the N subchannels is transmitted through a separate one of N adjustable gain stages, and wherein the N/X power control indications derived in the mobile station are employed to vary the gain of the N adjustable gain stages.
Claim 8
Dependent Claim
30 words
A method as in claim 6 or 7, wherein a plurality of adjustable gain stages associated with a plurality of adjacent subchannels are controlled using a same gain control signal.
Claim 9
Independent Claim
21 words
A method as in any one of claims 6 to 8, wherein the system is a wideband, multicarrier spread spectrum system.
Claim 10
Independent Claim
23 words
A method as in any one of claims 6 to 9, wherein the N subchannels are overlaid on up to N other carriers.
Claim 11
Dependent Claim
102 words
A base station for use in a Multi-Carrier Wide Band Spread Spectrum wireless telecommunications system, said base station comprising transmitter power control circuitry that is responsive to N/X power control indications sent from a mobile station to said base station for providing closed loop power control for N subchannels transmitted to the mobile station, wherein N is a total number of subchannels in use between said base station and the mobile station, and wherein X is a positive integer having a value within a range greater than or equal to one and less than N such that N/X is an integer number.
Claim 12
Dependent Claim
50 words
A base station as in claim 11, wherein each of the N subchannels is transmitted through a separate one of N adjustable gain stages, and wherein the N/X power control indications are generated in the mobile station and are employed to vary the gain of the N adjustable gain stages.
Claim 13
Dependent Claim
31 words
A base station as in claim 11 or 12, wherein a plurality of adjustable gain stages associated with a plurality of adjacent subchannels are controlled using a same gain control signal.
Claim 14
Dependent Claim
144 words
A base station for use in a Multi-Carrier Wide Band Spread Spectrum wireless telecommunications system, said base station comprising transmitter power control circuitry that is responsive to N/X power control indications sent from a mobile station to said base station for providing closed loop power control for N subchannels, wherein the N subchannels are combined into X combined subchannels, wherein the X combined subchannels are transmitted through a separate one of X adjustable gain stages, wherein N/X power control indications generated at the mobile station are employed to vary the gain of the X adjustable gain stages, wherein N is a total number of subchannels transmitted from said base station to the mobile station, and wherein X is a positive integer having a value within a range greater than or equal to one and less than N such that N/X is an integer number.
Claim 15
Dependent Claim
167 words
A base station for use in a Multi-Carrier wide band spread spectrum wireless telecommunications system, said base station comprising transmitter power control circuitry that is responsive to N power control indications sent from a mobile station to said base station for providing closed loop power control for N subchannels transmitted from said base station to the mobile station, wherein the N subchannels are combined into X combined subchannels and the X combined subchannels are transmitted through a separate one of X adjustable gain stages, and wherein N power control indications generated at the mobile station are combined in said base station into X combined power control indications and are employed to vary the gain of the X adjustable gain stages, wherein N is a total number of subchannels transmitted from said base station to the mobile station, and wherein X is a positive integer having a value within a range greater than or equal to one and less than N such that N/X is an integer number.
Claim 16
Dependent Claim
69 words
A wireless telecommunications system, comprising: at least one base station; at least one mobile station; and power control circuitry implemented in said base station and said mobile station wherein a plurality of power control indications sent from said mobile station to said base station are used to provide power control separately to a plurality of sets of subchannels, wherein each set of subchannels contains a same number of subchannels.
Claim 17
Dependent Claim
88 words
A wireless telecommunications system, comprising: at least one base station; at least one mobile station; and power control circuitry implemented in said base station and said mobile station, wherein a plurality of power control indications sent from said mobile station to said base station are used to provide power control separately to a plurality of sets of subchannels, wherein at least one set of subchannels contains a number of subchannels that differs from a number of subchannels contained in another one of the plurality of sets of subchannels.
References Cited (Backward Citations)
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