US6493564B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power control method and system in mobile communication networks
Assignee: Qualcomm Inc
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Filing: 2001-06-07
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Granted: 2002-12-10
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Expires: 2021-06-07
Abstract
Abstract A method and system for performing power control in a mobile communication network comprising at least one base station and a network element connected to the base station, wherein a reliability information is transmitted from the at least one base station to the network element, the reliability information defining a quality of a radio transmission between the at least one base station and a mobile terminal. Based on the transmitted reliability information, the network element determines a variation of a target setpoint for power control and transmits a power control command defining the variation of the target setpoint to the at least one base station. Thereby, a bearer specific controlling procedure can be performed and the signaling of the procedure can be done via the user plane. This implementation provides an outer loop power control having the necessary flexibility to adapt its parameters to the bearer characteristic of an actual connection.
Inventors
- 👤 Fabio Longoni
- 👤 Oscar Salonaho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:22
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/26; H04W52/06; H04W52/12; H04W52/24; H04W52/30; H04W52/36; H04W52/54; H04W52/60
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
133 words
A method for performing power control in a mobile communication network, comprising the steps of: a) transmitting a reliability information from at least one base station to a network element of said mobile communication network, said reliability information defining a quality of a radio transmission between said at least one base station and a mobile terminal or vice versa; b) determining a variation of a target setpoint for power control, based on the transmitted reliability information; c) transmitting a power control command defining said variation of said target setpoint from said network element to said at least one base station, wherein said target setpoint is a target energy per bit to noise power density ratio Eb/No, and wherein format and/or coding of the power control information is defined in a channel setup phase.
Claim 2
Independent Claim
133 words
A method for performing power control in a mobile communication network, comprising the steps of: a) transmitting a reliability information from at least one base station to a network element of said mobile communication network, said reliability information defining a quality of a radio transmission between said at least one base station and a mobile terminal or vice versa; b) determining a variation of a target setpoint for power control, based on the transmitted reliability information; c) transmitting a power control command defining said variation of said target setpoint from said network element to said at least one base station, wherein said target setpoint is a target energy per bit to noise power density ratio Eb/No, and wherein format and/or coding of the power control information is defined in a channel setup phase.
Claim 3
Dependent Claim
74 words
A method according to claim 1 , wherein said reliability information is transmitted by a plurality of base stations connected to said network element, wherein said variation of said target setpoint for power control is performed on the basis of a combined consideration of each reliability information transmitted from said plurality of base stations to said network element, and wherein said power control command is transmitted to each of said plurality of base stations.
Claim 4
Dependent Claim
33 words
A method according to claim 2 , wherein said determination of said variation of the target setpoint for power control is performed on the basis of a selection of the best reliability information.
Claim 5
Dependent Claim
34 words
A method according to claim 2 , wherein said determination of said variation of the target setpoint for power control is performed on the basis of a predetermined combination of the received reliability information.
Claim 6
Dependent Claim
16 words
A method according to claim 1 , wherein said network element is a radio network controller.
Claim 7
Dependent Claim
22 words
A method according to claim 1 , wherein said reliability information is inserted as a control information into an uplink data packet.
Claim 8
Dependent Claim
19 words
A method according to claim 1 , wherein said format and/or coding of said control information is bearer dependent.
Claim 9
Dependent Claim
30 words
A method according to claim 1 , wherein said reliability information comprises a result of a redundancy code check performed by said base station, and/or a channel decoder specific parameter.
Claim 10
Dependent Claim
20 words
A method according to claim 1 , wherein one resulting reliability information is defined, when different uplink branches are combined.
Claim 11
Dependent Claim
23 words
A method according to claim 1 , wherein said power control command is inserted as a control information into a downlink data packet.
Claim 12
Dependent Claim
36 words
A method according to claim 10 , wherein an empty downlink data packet containing only said power control command is transmitted, when said power control command is required while no downlink data packet is being transmitted.
Claim 13
Dependent Claim
18 words
A method according to claim 1 , wherein a coding of said power control command is bearer dependent.
Claim 14
Dependent Claim
22 words
A method according to claim 1 , wherein said coding of said power control command is defined in a channel setup phase.
Claim 15
Dependent Claim
26 words
A method according to claim 1 , wherein said power control command defines a variation of the energy per bit to noise power density ratio Eb/No.
Claim 16
Dependent Claim
27 words
A method according to claim 14 , wherein said power control command has a length of one bit and defines an incrementation or decrementation of the Eb/No.
Claim 17
Dependent Claim
28 words
A method according to claim 14 , wherein said power control command has a length of a plurality of bits and defines a change value of the Eb/No.
Claim 18
Dependent Claim
28 words
A method according to claim 1 , wherein said power control command is duplicated in all branches, when a downlink data splitting is performed in a network element.
Claim 19
Dependent Claim
26 words
A method according to claim 1 , wherein an absolute value of said target setpoint can be set in all branches during a dedicated channel activity.
Claim 20
Dependent Claim
31 words
A method according to claim 18 , wherein a step size for the variation of said target setpoint can be redefined during said dedicated channel activity using a layer 3 signaling.
Claim 21
Independent Claim
173 words
A system for performing power control in a mobile communication network comprising at least one base station and a network element connected to said at least one base station, wherein said at least one base station comprises: a generating means for generating a reliability information defining a quality of a radio transmission between said base station and a mobile terminal; and a transmitting means for transmitting said reliability information to said network element; and wherein said network element comprises: a receiving means for receiving said reliability information; a determination means for determining a variation of a target setpoint for power control based on the received reliability information; a generating means for generating a power control command defining said variation of said target setpoint; and a transmitting means for transmitting said power control command to said at least one base station, wherein said target setpoint is a target energy per bit to noise power density ratio Eb/No, and wherein format and/or coding of the power control information is defined in a channel setup phase.
Claim 22
Independent Claim
173 words
A system for performing power control in a mobile communication network comprising at least one base station and a network element connected to said at least one base station, wherein said at least one base station comprises: a generating means for generating a reliability information defining a quality of a radio transmission between said base station and a mobile terminal; and a transmitting means for transmitting said reliability information to said network element; and wherein said network element comprises: a receiving means for receiving said reliability information; a determination means for determining a variation of a target setpoint for power control based on the received reliability information; a generating means for generating a power control command defining said variation of said target setpoint; and a transmitting means for transmitting said power control command to said at least one base station, wherein said target setpoint is a target energy per bit to noise power density ratio Eb/No, and wherein format and/or coding of the power control information is defined in a channel setup phase.
Claim 23
Dependent Claim
34 words
The system according to claim 20 , wherein said transmitting means of said at least one base station is arranged to insert said reliability information as a control information into an uplink data packet.
Claim 24
Dependent Claim
58 words
The system according to claim 20 , wherein said at least one base station further comprises a checking means for checking a redundancy code received from said mobile terminal, and wherein said generating means of said base station generates said reliability information on the basis of the checking result of said checking means and/or a channel specific parameter.
Claim 25
Dependent Claim
32 words
The system according to claim 20 , wherein said transmitting means of said network element is arranged to insert said power control command as a control information into a downlink data packet.
Claim 26
Dependent Claim
44 words
The system according to claim 23 , wherein said transmitting means of said network element is arranged to generate an empty downlink packet containing only said power control command, when said power control command is required while no downlink data packet is being transmitted.
Claim 27
Dependent Claim
40 words
The system according to claim 20 , wherein said at least one base station further comprises a target setting means for changing the target setpoint for power control in accordance with the variation defined by the received power control command.
Claim 28
Dependent Claim
32 words
The system according to claim 25 , wherein said target setting means can be controlled based on a layer 3 signaling so as to set an absolute value of said target setpoint.
Claim 29
Dependent Claim
35 words
The system according to claim 23 , wherein said target setting means can be controlled based on a layer 3 signaling so as to redefine a step size for the variation of said target setpoint.
Claim 30
Dependent Claim
66 words
The system according to claim 20 , wherein said determination means of said network element is arranged to determine said variation of said target setpoint for power control on the basis of each reliability information received from a plurality of base stations, and wherein said power control command is transmitted by said transmitting means of said network element to each of said plurality of base stations.
Claim 31
Dependent Claim
42 words
The system according to claim 28 , wherein said determination means is arranged to determine said variation of said target setpoint for power control on the basis of a selection of the best reliability information received from said plurality of base stations.
Claim 32
Dependent Claim
36 words
The method according to claim 28 , wherein said determination means is arranged to determine said variation of said target setpoint for power control on the basis of a predetermined combination of the received reliability information.
Claim 33
Dependent Claim
42 words
The system according to claim 20 , wherein said generating means of said at least one base station is arranged to determine a resultant reliability information on the basis of a plurality of reliability informations generated for a plurality of uplink branches.
Claim 34
Dependent Claim
53 words
The system according to claim 31 , wherein said generating means of said at least one base station is arranged to determine said resultant reliability information on the basis of the worst reliability information of said plurality of uplink branches or on the basis of a pre-determined combination of said generated reliability informations.
Claim 35
Dependent Claim
16 words
The system according to claim 20 , wherein said network element is a radio network controller.
Claim 36
Dependent Claim
13 words
A network element for use in a system according to claim 20 .
Claim 37
Dependent Claim
13 words
A base station for use in a system according to claim 20 .
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-12-09 | 2006-06-10 | 2006-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-12-09 | 2010-06-10 | 2010-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-12-09 | 2014-06-10 | 2014-12-10 | $7700.00 | Window Closed / Lapsed |