Patent EP0493084A2 successfully refreshed from Google Patents.
US5361402A
Expired / Lapsed
US
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Test device for analyzing communication channels in a trunked radio system
Assignee: Motorola Mobility LLC
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Filing: 1992-03-30
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Granted: 1994-11-01
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Expires: 2012-03-30
Abstract
Abstract A test device (101) for use in a trunked radio system (102) employs a received signal strength indicator (RSSI) detector (120) to analyze transmission parameters. The test device (101 ) includes a transceiver (118) for transmitting and receiving radio signals, and a channel controller (116). The test device further includes memory (117) for storing (403) data, and test control means (116) for causing the transceiver to receive (303, 406) outbound signals on active communication channels. The test device (101) then processes (303-305, 402-404) the power levels for the outbound signals, and either re-transmits (305, 307) the results, or stores (407) them in memory.
Inventors
- 👤 Gary W. Grube
- 👤 Carl B. Olson
- 👤 Paul J. Cizek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:51
CPC Classifications
H; H04; H04B; H04B17/00; H04B17/30; H04B17/382; H04B17/309; H04W; H04W24/00; H04W24/06; H04W28/00; H04W28/16; H04W28/18; H04W72/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
137 words
A test device for use in a trunked radio system providing communications services within a coverage area, the device comprising: A) transceiver means for transmitting and receiving radio signals; B) channel control means, operably coupled to the transceiver means, for controlling which channels the transceiver means transmits and receives on; C) memory means for storing data; D) test control means, operably coupled to the channel control means and the memory means, for: i) automatically occasionally causing the channel control means to cause the transceiver means to receive, on communication channels in use in the trunked communication system, outbound signals that each includes an indicia of a transmission parameter; ii) automatically analyzing the outbound signals using the indicia of the transmission parameters to produce a test result; and iii) automatically storing the test result in the memory means.
Claim 2
Dependent Claim
137 words
A test device for use in a trunked radio system providing communications services within a coverage area, the device comprising: A) transceiver means for transmitting and receiving radio signals; B) channel control means, operably coupled to the transceiver means, for controlling which channels the transceiver means transmits and receives on; C) memory means for storing data; D) test control means, operably coupled to the channel control means and the memory means, for: i) automatically occasionally causing the channel control means to cause the transceiver means to receive, on communication channels in use in the trunked communication system, outbound signals that each includes an indicia of a transmission parameter; ii) automatically analyzing the outbound signals using the indicia of the transmission parameters to produce a test result; and iii) automatically storing the test result in the memory means.
Claim 3
Dependent Claim
30 words
The device of claim 1, wherein the channel control means further includes means for transmitting the test result upon receiving an instruction to transmit such information via the transceiver means.
Claim 4
Dependent Claim
22 words
The device of claim 1, wherein the radio signals received by the transceiver means comprise control signalling from the trunked radio system.
Claim 5
Dependent Claim
26 words
The device of claim 3, wherein the control signalling occasionally comprises a transmission power level for at least one identified channel in the trunked radio system.
Claim 6
Dependent Claim
32 words
The device of claim 4, wherein the test control means further comprises means for automatically analyzing outbound signals of the at least one identified channel, with respect to the transmission power level.
Claim 7
Dependent Claim
49 words
The device of claim 1, wherein the test control means further comprises means for: iv) automatically comparing the test result with a predetermined criterion, and when this comparison yields at least a threshold value, automatically causing the transceiver means to transmit a message indicating that a possible problem exists.
Claim 8
Dependent Claim
138 words
A test device for use in a trunked radio system providing communications services within a coverage area, the device comprising: A) transceiver means for transmitting and receiving radio signals; B) channel control means operably coupled to the transceiver means for controlling which channels the transceiver means transmits and receives on; C) test control means operably coupled to the channel control means for: i) automatically occasionally causing the channel control means to cause the transceiver means to receive outbound signals on communication channels in use in the trunked communication system; ii) causing the channel control means to cause the transceiver means to receive outbound signals, on a particular communication channel that has been identified in a specific test monitoring instruction, wherein the outbound signals comprise an indication of a transmission power level at which the outbound signal is transmitted.
Claim 9
Dependent Claim
138 words
A test device for use in a trunked radio system providing communications services within a coverage area, the device comprising: A) transceiver means for transmitting and receiving radio signals; B) channel control means operably coupled to the transceiver means for controlling which channels the transceiver means transmits and receives on; C) test control means operably coupled to the channel control means for: i) automatically occasionally causing the channel control means to cause the transceiver means to receive outbound signals on communication channels in use in the trunked communication system; ii) causing the channel control means to cause the transceiver means to receive outbound signals, on a particular communication channel that has been identified in a specific test monitoring instruction, wherein the outbound signals comprise an indication of a transmission power level at which the outbound signal is transmitted.
Claim 10
Dependent Claim
35 words
The device of claim 7, wherein the test device includes memory, and wherein the test control means further comprises means for storing information regarding at least some of the received outbound signals in the memory.
Claim 11
Dependent Claim
30 words
The device of claim 7, wherein the test control means further comprises means for causing the transceiver means to transmit information regarding at least some of the received outbound signals.
Claim 12
Dependent Claim
37 words
The device of claim 7, wherein the test control means further comprises means for: iii) causing the transceiver to transmit, responsive to a specific instruction received via the transceiver, a test signal on a particular identified channel.
Claim 13
Dependent Claim
25 words
The device of claim 10, wherein the test signal is transmitted at a power level that corresponds to a specified power level in the instruction.
Claim 14
Dependent Claim
25 words
The device of claim 10, wherein the test signal includes an indicia of the power level at which the transceiver means transmits the test signal.
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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) | 1997-10-31 | 1998-05-02 | 1998-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-31 | 2002-05-02 | 2002-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-31 | 2006-05-02 | 2006-11-01 | $7700.00 | Window Closed / Lapsed |