US5627876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Call priority override in a land mobile radio system
Assignee: Uniden America Corp
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Filing: 1994-06-10
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Granted: 1997-05-06
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Expires: 2014-06-10
Abstract
Abstract A land mobile radio communication system has a plurality of cell sites, each of which typically has a plurality of repeaters. The over-the-air radio communications between the cell site repeaters and the mobile radios in the system include both a voice component and a data component. The data component is carried as low-frequency subaudible information. Communication channels are provided between the radio users at each site as well as between users at different sites and between mobile radio users and the public telephone network. Within a cell site, the transmitted and received communications are digitized and passed through serial buses in a time multiplex fashion. The digitized voice is transferred between time slots to provide the required switching function. The system includes operational software to provide direct inward dial telephone number recognition, automatic voice prompts for a user entering a new cell, call priority override, fraud control for radio fleets and a dynamic control channel.
Inventors
- 👤 Billy G. Moon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:02
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/04; H04W84/08; H04W4/00; H04W4/06; H04W4/10; H04W76/00; H04W76/40; H04W76/45
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A method for call priority override in a land mobile radio system in which a cell has a group of repeaters, controlled by a controller, and wherein users may place transmission trunked or conversation trunked calls and repeaters are given a system priority for conversation trunked calls, the method comprising the steps of: receiving at a cell, from a user's radio, a call request specifying a number for establishing a conversation trunked call; examining a data structure, by the controller, using said received number to determine a matching corresponding priority; assigning said determined corresponding priority to override said predetermined priority for said selected user's radio if said matching corresponding priority is determined, and assigning one of said repeaters to said selected user's radio to carry said conversation trunked call if said assigned corresponding priority is at least equal to said system priority for conversation trunked calls.
Claim 2
Independent Claim
146 words
A method for call priority override in a land mobile radio system in which a cell has a group of repeaters, controlled by a controller, and wherein users may place transmission trunked or conversation trunked calls and repeaters are given a system priority for conversation trunked calls, the method comprising the steps of: receiving at a cell, from a user's radio, a call request specifying a number for establishing a conversation trunked call; examining a data structure, by the controller, using said received number to determine a matching corresponding priority; assigning said determined corresponding priority to override said predetermined priority for said selected user's radio if said matching corresponding priority is determined, and assigning one of said repeaters to said selected user's radio to carry said conversation trunked call if said assigned corresponding priority is at least equal to said system priority for conversation trunked calls.
Claim 3
Independent Claim
158 words
A method for call priority override in a land mobile radio system in which a cell has a group of repeaters, controlled by a controller, and wherein users may place transmission trunked or conversation trunked calls and each user has a predetermined priority, and the group of repeaters are given a system priority for conversation trunked calls, the method comprising the steps of: receiving at a cell, from a user's radio, a call request specifying a number for establishing a conversation trunked call; examining a data structure, by the controller, using said received number to determine a matching corresponding priority; assigning said determined corresponding priority to override said predetermined priority for said selected user's radio if said matching corresponding priority is determined, and assigning one of said repeaters to said user's radio to carry said conversation trunked call if said assigned corresponding priority is at least equal to, or higher than, said system priority for conversation trunked calls.
Claim 4
Independent Claim
158 words
A method for call priority override in a land mobile radio system in which a cell has a group of repeaters, controlled by a controller, and wherein users may place transmission trunked or conversation trunked calls and each user has a predetermined priority, and the group of repeaters are given a system priority for conversation trunked calls, the method comprising the steps of: receiving at a cell, from a user's radio, a call request specifying a number for establishing a conversation trunked call; examining a data structure, by the controller, using said received number to determine a matching corresponding priority; assigning said determined corresponding priority to override said predetermined priority for said selected user's radio if said matching corresponding priority is determined, and assigning one of said repeaters to said user's radio to carry said conversation trunked call if said assigned corresponding priority is at least equal to, or higher than, said system priority for conversation trunked calls.
References Cited (Backward Citations)
US4092600A
Cited
USRE32789E
Cited
US4578815A
Cited
US4612415A
Cited
US4672601A
Cited
US4692945A
Cited
US4670905A
Cited
US4701944A
Cited
US4831373A
Cited
JPH01288028A
Cited
US5034993A
Cited
US5218354A
Cited
US5235631A
Cited
US5278898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-05-05 | 2000-11-04 | 2001-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-05 | 2004-11-04 | 2005-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-05 | 2008-11-04 | 2009-05-06 | $7700.00 | Window Closed / Lapsed |