US6181685B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for group calls in a wireless CDMA communication system
Assignee: Google Technology Holdings LLC
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Filing: 1998-04-23
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Granted: 2001-01-30
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Expires: 2018-04-23
Abstract
Abstract A controller ( 120 ), in response to receiving a request for a group call ( 201 ) targeting a group ( 101 ), allocates at least one power adjustment channel to the group call ( 202 ) and sends identification of the at least one power adjustment channel to at least some of the subscriber units in the group ( 203 ). Using the at least one power adjustment channel, the controller also sends unique power adjustment information to each of the at least some subscriber units ( 204 ). Unique power adjustment channel access information is also sent to the subscriber units so that each subscriber unit can receive its own unique power adjustment information ( 503 ) and adjust its inbound transmission power ( 504 ) in response. In this manner, efficient reverse power control is provided for multiple subscriber units thereby facilitating group calls in CDMA systems.
Inventors
- 👤 Leigh M. Chinitz
- 👤 Michael L. Needham
- 👤 Timothy J. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:04
CPC Classifications
H; H04; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/24; H04W52/247; H04W52/06; H04W52/14; H04W52/146; H04W4/00; H04W4/06; H04W84/00; H04W84/02; H04W84/04; H04W84/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
204 words
A controller for use in a wireless CDMA communication system comprising at least one base station coupled to the controller, the at least one base station being in wireless communication with a plurality of subscriber units via at least one outbound traffic channel, the plurality of subscriber units being in wireless communication with the at least one base station via a respective plurality of inbound traffic channels, the controller comprising: means for receiving, from a requesting subscriber unit of a group, a request for a group call, wherein at least a subset of the plurality of subscriber units are logically arranged into the group; means, coupled to the means for receiving, for allocating at least one outbound power adjustment channel to the group call the at least one outbound power adjustment channel being in addition to the at least one outbound traffic channel and the plurality of inbound traffic channels and enabling the controller to provide unique inbound power adjustment information to at least some subscriber units of the group; and means, coupled to the means for allocating, for sending, to the at least some subscriber units of the group, identification of the at least one outbound power adjustment channel responsive to the request.
Claim 2
Dependent Claim
204 words
A controller for use in a wireless CDMA communication system comprising at least one base station coupled to the controller, the at least one base station being in wireless communication with a plurality of subscriber units via at least one outbound traffic channel, the plurality of subscriber units being in wireless communication with the at least one base station via a respective plurality of inbound traffic channels, the controller comprising: means for receiving, from a requesting subscriber unit of a group, a request for a group call, wherein at least a subset of the plurality of subscriber units are logically arranged into the group; means, coupled to the means for receiving, for allocating at least one outbound power adjustment channel to the group call the at least one outbound power adjustment channel being in addition to the at least one outbound traffic channel and the plurality of inbound traffic channels and enabling the controller to provide unique inbound power adjustment information to at least some subscriber units of the group; and means, coupled to the means for allocating, for sending, to the at least some subscriber units of the group, identification of the at least one outbound power adjustment channel responsive to the request.
Claim 3
Dependent Claim
35 words
The controller of claim 1 , further comprising: means for sending, to each of the at least some subscriber units, the unique inbound power adjustment information via the at least one outbound power adjustment channel.
Claim 4
Dependent Claim
64 words
The controller of claim 1 , wherein the means for sending the identification of the at least one outbound power adjustment channel further comprises means for sending, to each of the at least some subscriber units, an identification of a uniquely assigned portion of the at least one outbound power adjustment channel, wherein the uniquely assigned portion comprises the unique inbound power adjustment information.
Claim 5
Dependent Claim
72 words
The controller of claim 2 , wherein the means for sending the identification of the at least one outbound power adjustment channel further comprises means for sending, to each of the at least some subscriber units, a unique address relative to the at least one outbound power adjustment channel, wherein the unique inbound power adjustment information is sent via the at least one outbound power adjustment channel based on the unique address.
Claim 6
Dependent Claim
27 words
The controller of claim 1 , wherein the means for allocating further deallocates the at least one outbound power adjustment channel when the group call has ended.
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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) | 2004-01-30 | 2004-07-31 | 2005-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-30 | 2008-07-31 | 2009-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-30 | 2012-07-31 | 2013-01-30 | $7700.00 | Window Closed / Lapsed |