US6684080B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trunked radio repeater communication system including home channel aliasing and call grouping
Assignee: TRANSCRYPT INTERNATIONAL / E F JOHNSON Co
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Filing: 1998-04-10
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Granted: 2004-01-27
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Expires: 2018-04-10
Abstract
Abstract A system for channel assignment in a trunked transmission communication system including a plurality of subscribers. A plurality of subscribers is provided home channel assignment to reduce collisions. A home channel alias is provided for home channel coverage where a designated home channel is unavailable. A system for call grouping is provided to avoid talk group splitting. A first check is used to determine if other channels are conducting communications with identical home and talk group information. A second check is available after a temporary channel assignment. In one system both the home channel aliasing and call grouping are performed.
Inventors
- 👤 Keith W. Barnes
- 👤 Rory A. Smith
- 👤 Mervin L. Grindahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:53
CPC Classifications
H; H04; H04W; H04W36/00; H04W36/06; H04W36/0005; H04W36/0009; H04W24/00; H04W4/00; H04W4/06; H04W48/00; H04W48/08; H04W48/10; H04W72/00; H04W72/04; H04W72/20; H04W72/23
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
64 words
A method for channel assignment, comprising: distributing candidate home channel numbers across a range of available channel numbers; assigning a home channel to each subscriber; scanning for an open channel corresponding to the home channel assigned the particular subscriber; if the home channel is available, conducting communications on the home channel; and if the home channel is unavailable, seeking a next available home channel.
Claim 2
Independent Claim
64 words
A method for channel assignment, comprising: distributing candidate home channel numbers across a range of available channel numbers; assigning a home channel to each subscriber; scanning for an open channel corresponding to the home channel assigned the particular subscriber; if the home channel is available, conducting communications on the home channel; and if the home channel is unavailable, seeking a next available home channel.
Claim 3
Dependent Claim
25 words
The method of claim 1 , wherein the act of seeking comprises scanning for another available home channel at a channel below the home channel.
Claim 4
Dependent Claim
25 words
The method of claim 1 , wherein the act of seeking comprises scanning for another available home channel at a channel above the home channel.
Claim 5
Dependent Claim
37 words
The method of claim 1 , wherein communications between a subscriber and a repeater include communications of home channel information using a home code, open channel information using a free channel code, and channel in use information.
Claim 6
Dependent Claim
66 words
The method of claim 1 , further comprising: upon receipt of a group call transmission from a subscriber on a first channel, checking for other channels conducting communications having an identical home channel and an identical talk group; and if a second channel is conducting communications having the identical home channel and the identical talk group, instructing the subscriber to use the second channel for communications.
Claim 7
Dependent Claim
41 words
The method of claim 5 , further comprising if a second channel is conducting communications having a home channel alias associated with the identical home channel and the identical talk group, instructing the subscriber to use the second channel for communications.
Claim 8
Dependent Claim
24 words
The method of claim 5 , further comprising if no other channel is found allowing the subscriber to conduct communications on the first channel.
Claim 9
Dependent Claim
53 words
The method of claim 5 , wherein the first channel is temporarily granted for use by a subscriber if another channel is not found to be conducting communications having an identical home channel and an identical talk group, and a second test is performed to decide if the first channel is fully granted.
Claim 10
Independent Claim
99 words
A method for channel assignment, comprising: distributing candidate home channel numbers across a range of available channel numbers; assigning a home channel to each subscriber; scanning for an open channel corresponding to the home channel assigned the particular subscriber; if the home channel is available, conducting communications on the home channel; and if the home channel is unavailable, seeking a next available home channel below the home channel; wherein communications between a subscriber and a repeater include communications of home channel information using a home code, open channel information using a free channel code, and channel in use information.
Claim 11
Independent Claim
99 words
A method for channel assignment, comprising: distributing candidate home channel numbers across a range of available channel numbers; assigning a home channel to each subscriber; scanning for an open channel corresponding to the home channel assigned the particular subscriber; if the home channel is available, conducting communications on the home channel; and if the home channel is unavailable, seeking a next available home channel below the home channel; wherein communications between a subscriber and a repeater include communications of home channel information using a home code, open channel information using a free channel code, and channel in use information.
Claim 12
Dependent Claim
66 words
The method of claim 9 , further comprising: upon receipt of a group call transmission from a subscriber on a first channel, checking for other channels conducting communications having an identical home channel and an identical talk group; and if a second channel is conducting communications having the identical home channel and the identical talk group, instructing the subscriber to use the second channel for communications.
Claim 13
Dependent Claim
41 words
The method of claim 10 , further comprising if a second channel is conducting communications having a home channel alias associated with the identical home channel and the identical talk group, instructing the subscriber to use the second channel for communications.
Claim 14
Dependent Claim
24 words
The method of claim 10 , further comprising if no other channel is found allowing the subscriber to conduct communications on the first channel.
Claim 15
Dependent Claim
53 words
The method of claim 10 , wherein the first channel is temporarily granted for use by a subscriber if another channel is not found to be conducting communications having an identical home channel and an identical talk group, and a second test is performed to decide if the first channel is fully granted.
Claim 16
Dependent Claim
21 words
A trunked repeater system, comprising a plurality of repeaters and a plurality of subscribers incorporating the method of claim 9 .
Claim 17
Dependent Claim
21 words
A trunked repeater system, comprising a plurality of repeaters and a plurality of subscribers incorporating the method of claim 12 .
Claim 18
Independent Claim
64 words
A method for channel assignment, comprising: upon receipt of a group call transmission from a subscriber on a first channel, checking for other channels conducting communications having an identical home channel and an identical talk group; and if a second channel is conducting communications having the identical home channel and the identical talk group, instructing the subscriber to use the second channel for communications.
Claim 19
Independent Claim
64 words
A method for channel assignment, comprising: upon receipt of a group call transmission from a subscriber on a first channel, checking for other channels conducting communications having an identical home channel and an identical talk group; and if a second channel is conducting communications having the identical home channel and the identical talk group, instructing the subscriber to use the second channel for communications.
Claim 20
Dependent Claim
41 words
The method of claim 16 , further comprising if a second channel is conducting communications having a home channel alias associated with the identical home channel and the identical talk group, instructing the subscriber to use the second channel for communications.
Claim 21
Dependent Claim
24 words
The method of claim 16 , further comprising if no other channel is found allowing the subscriber to conduct communications on the first channel.
Claim 22
Dependent Claim
53 words
The method of claim 16 , wherein the first channel is temporarily granted for use by a subscriber if another channel is not found to be conducting communications having an identical home channel and an identical talk group, and a second test is performed to decide if the first channel is fully granted.
Claim 23
Dependent Claim
66 words
The method of claim 16 , further comprising: distributing candidate home channel numbers across a range of available channel numbers; assigning a home channel to each subscriber; scanning for an open channel corresponding to the home channel assigned the particular subscriber; if the home channel is available, conducting communications on the home channel; and if the home channel is unavailable, seeking a next available home channel.
Claim 24
Dependent Claim
25 words
The method of claim 20 , wherein the act of seeking comprises scanning for another available home channel at a channel below the home channel.
Claim 25
Dependent Claim
25 words
The method of claim 20 , wherein the act of seeking comprises scanning for another available home channel at a channel above the home channel.
Claim 26
Dependent Claim
37 words
The method of claim 20 , wherein communications between a subscriber and a repeater include communications of home channel information using a home code, open channel information using a free channel code, and channel in use information.
Claim 27
Dependent Claim
21 words
A trunked repeater system, comprising a plurality of repeaters and a plurality of subscribers incorporating the method of claim 16 .
References Cited (Backward Citations)
US5203015A
Cited
US5613201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-01-26 | 2007-07-28 | 2008-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-01-26 | 2011-07-28 | 2012-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-01-26 | 2015-07-28 | 2016-01-27 | $7700.00 | Window Closed / Lapsed |