Patent US6047200A successfully refreshed from Google Patents.
US6047200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote wireless unit having reduced power operating mode
Assignee: AT&T Mobility II LLC
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Filing: 1998-12-30
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Granted: 2000-04-04
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Expires: 2018-12-30
Abstract
Abstract A remote unit for a personal wireless area network includes a receiver, an AC power supply, a battery-backup power supply and a controller. The battery-backup becomes operative when the AC power supply fails and supplied power to the receiver. The controller detects when the AC power supply fails and controls the receiver and the battery-backup power supply by invoking a sleep mode of operation. The sleep mode of operation is periodically interrupted by the controller controlling the receiver and the battery-backup power supply to enter a standby mode of operation in which the receiver scans for a CONNECT message from a base station indicating an incoming call. The controller coordinates the sleep mode and the standby mode of operations based on a frame count that is generated from an identification number of the remote unit. A highly bandwidth-efficient communications method is employed in the base station to enable it to coordinate communication with the remote unit when it changes from the sleep mode to the standby mode.
Inventors
- 👤 David Gibbons
- 👤 James Timothy Golden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:23
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/69; H04B1/707; H04L; H04L12/00; H04L12/02; H04L12/10; H04L27/00; H04L27/26; H04L27/2601; H04L5/00; H04L5/02; H04L5/023; H04L5/026; H04W; H04W52/00; H04W52/02; H04W52/0209; H04W52/0261; H04W52/0296; Y; Y02; Y02D; Y02D30/00; Y02D30/70
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
161 words
A remote unit for a personal wireless area network comprising: a receiver; an AC power supply coupled to the receiver and supplying power to the receiver; a battery-backup power supply coupled to the receiver, the battery-backup power supply becoming operative to supply power to the receiver when the AC power supply fails; and a controller coupled to the receiver, the AC power supply and the battery-backup power supply, the controller detecting when the AC power supply fails and in response controls the receiver and the battery-backup power supply by invoking a sleep mode of operation, the sleep mode operation being periodically interrupted by the controller controlling the receiver and the battery-backup power supply to enter a standby mode of operation in which the receiver scans for a CONNECT message indicating an incoming call, the controller controlling the sleep mode and the standby mode of operations based on a frame count that is generated from an identification number of the remote unit.
Claim 2
Dependent Claim
161 words
A remote unit for a personal wireless area network comprising: a receiver; an AC power supply coupled to the receiver and supplying power to the receiver; a battery-backup power supply coupled to the receiver, the battery-backup power supply becoming operative to supply power to the receiver when the AC power supply fails; and a controller coupled to the receiver, the AC power supply and the battery-backup power supply, the controller detecting when the AC power supply fails and in response controls the receiver and the battery-backup power supply by invoking a sleep mode of operation, the sleep mode operation being periodically interrupted by the controller controlling the receiver and the battery-backup power supply to enter a standby mode of operation in which the receiver scans for a CONNECT message indicating an incoming call, the controller controlling the sleep mode and the standby mode of operations based on a frame count that is generated from an identification number of the remote unit.
Claim 3
Dependent Claim
26 words
The remote unit according to claim 1, wherein the receiver scans for a connect message for a predetermined number of subframes of a TDD timing structure.
Claim 4
Dependent Claim
15 words
The remote unit according to claim 2, wherein the predetermined number of subframes equals 3.
Claim 5
Dependent Claim
26 words
The remote unit according to claim 2, wherein when the remote unit enters the standby mode, the remote unit reacquires synchronization to the TDD timing structure.
Claim 6
Dependent Claim
22 words
The remote unit according to claim 4, wherein the remote unit reacquires synchronization to the TDD timing structure in about 34 subframes.
Claim 7
Dependent Claim
30 words
The remote unit according to claim 4, wherein the remote unit scans for a CONNECT message at a subframe that is related to an identification number of the remote unit.
Claim 8
Independent Claim
110 words
A method for reducing power consumption of a remote unit in a PWAN system, comprising the steps of: powering a remote unit using a battery backup power supply when an AC power supply fails at the remote unit; entering a sleep mode of operation at the remote unit, the sleep mode having a reduced power consumption for the battery backup power supply; entering a standby mode of operation at the remote unit a predetermined period of time after entering the sleep mode of operation scanning for a CONNECT message indicating an incoming call for the remote unit; and reentering the sleep mode of operation when no CONNECT message is received.
Claim 9
Independent Claim
110 words
A method for reducing power consumption of a remote unit in a PWAN system, comprising the steps of: powering a remote unit using a battery backup power supply when an AC power supply fails at the remote unit; entering a sleep mode of operation at the remote unit, the sleep mode having a reduced power consumption for the battery backup power supply; entering a standby mode of operation at the remote unit a predetermined period of time after entering the sleep mode of operation scanning for a CONNECT message indicating an incoming call for the remote unit; and reentering the sleep mode of operation when no CONNECT message is received.
Claim 10
Dependent Claim
30 words
The method according to claim 7, further comprising the step of synchronizing the remote unit to a TDD timing structure before the step of entering the standby mode of operation.
Claim 11
Dependent Claim
27 words
The method according to claim 8, wherein the predetermined period of time is a predetermined number of subframes after a boundary subframe of the TDD timing structure.
Claim 12
Dependent Claim
22 words
The method according to claim 9, wherein the predetermined number of subframes is based on an identification number of the remote unit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-04 | 2003-10-04 | 2004-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-04 | 2007-10-04 | 2008-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-04 | 2011-10-04 | 2012-04-04 | $7700.00 | Window Closed / Lapsed |