US5995840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for dynamically selecting a frequency reuse plan for a radio messaging system
Assignee: Google Technology Holdings LLC
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Filing: 1997-07-17
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Granted: 1999-11-30
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Expires: 2017-07-17
Abstract
Abstract A method and apparatus in a radio messaging system monitors (304, 404), by a plurality of base receivers (207), an inbound channel for an inbound transmission from a portable subscriber unit (122), and determines (306, 406) a subset of the plurality of base receivers that reliably receive the inbound transmission. The method and apparatus then selects (310, 408) a frequency reuse plan for the radio messaging system, based upon the subset.
Inventors
- 👤 Jheroen Pieter Dorenbosch
- 👤 Robert L. Breeden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:20
CPC Classifications
H; H04; H04W; H04W84/00; H04W84/02; H04W84/022; H04W84/025
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
72 words
A method in a two-way radio messaging system for dynamically selecting a frequency reuse plan, comprising the steps of: monitoring, by a plurality of base receivers, an inbound channel for an inbound transmission from a portable subscriber unit; determining a count of how many base receivers are in a subset of the plurality of base receivers that reliably receive the inbound transmission; and selecting the frequency reuse plan, based upon the count.
Claim 2
Independent Claim
72 words
A method in a two-way radio messaging system for dynamically selecting a frequency reuse plan, comprising the steps of: monitoring, by a plurality of base receivers, an inbound channel for an inbound transmission from a portable subscriber unit; determining a count of how many base receivers are in a subset of the plurality of base receivers that reliably receive the inbound transmission; and selecting the frequency reuse plan, based upon the count.
Claim 3
Dependent Claim
35 words
The method of claim 1, wherein the determining step comprises the step of determining the subset of the plurality of base receivers that reliably receive the inbound transmission and are collocated with a base transmitter.
Claim 4
Dependent Claim
27 words
The method of claim 1, further comprising the step of applying the frequency reuse plan to at least one of an outbound transmission and an inbound transmission.
Claim 5
Dependent Claim
29 words
The method of claim 1, wherein the monitoring step comprises the step of monitoring the inbound channel in response to having sent a command to the portable subscriber unit.
Claim 6
Dependent Claim
53 words
The method of claim 1, wherein the determining step comprises the steps of: measuring by the plurality of base receivers a received signal strength of the inbound transmission; and including a base receiver in the subset only when the received signal strength measured for the base receiver is greater than a predetermined threshold.
Claim 7
Dependent Claim
52 words
The method of claim 1, wherein the determining step comprises the steps of: measuring by the plurality of base receivers an error rate generated by the inbound transmission; and including a base receiver in the subset only when the error rate measured for the base receiver is less than a predetermined threshold.
Claim 8
Dependent Claim
34 words
The method of claim 1, wherein the selecting step comprises the step of selecting at least one base transmitter collocated with at least one base receiver of the subset for sending an outbound transmission.
Claim 9
Dependent Claim
38 words
The method of claim 7, wherein the selecting step further comprises the step of inactivating all base transmitters collocated with a base receiver of the subset other than the at least one base transmitter during the outbound transmission.
Claim 10
Dependent Claim
28 words
The method of claim 1, wherein the selecting step comprises the step of selecting the frequency reuse plan such that co-channel transmitter spacing increases as the count increases.
Claim 11
Dependent Claim
118 words
A controller in a two-way radio messaging system for dynamically selecting a frequency reuse plan, the controller comprising: a network interface for receiving a message from a message originator; a processing system coupled to the network interface for processing the message; and an output interface coupled to the processing system for communicating with a plurality of base receivers, wherein the processing system is programmed to: monitor, through the plurality of base receivers, an inbound channel for an inbound transmission from a portable subscriber unit; determine a count of how many base receivers are in a subset of the plurality of base receivers that reliably receive the inbound transmission; and select the frequency reuse plan, based upon the count.
Claim 12
Dependent Claim
118 words
A controller in a two-way radio messaging system for dynamically selecting a frequency reuse plan, the controller comprising: a network interface for receiving a message from a message originator; a processing system coupled to the network interface for processing the message; and an output interface coupled to the processing system for communicating with a plurality of base receivers, wherein the processing system is programmed to: monitor, through the plurality of base receivers, an inbound channel for an inbound transmission from a portable subscriber unit; determine a count of how many base receivers are in a subset of the plurality of base receivers that reliably receive the inbound transmission; and select the frequency reuse plan, based upon the count.
Claim 13
Dependent Claim
35 words
The controller of claim 10, wherein the processing system is further programmed to determine the subset of the plurality of base receivers that reliably receive the inbound transmission and are collocated with a base transmitter.
Claim 14
Dependent Claim
30 words
The controller of claim 10, wherein the processing system is further programmed to apply the frequency reuse plan to at least one of an outbound transmission and an inbound transmission.
Claim 15
Dependent Claim
29 words
The controller of claim 10, wherein the processing system is further programmed to monitor the inbound channel in response to having sent a command to the portable subscriber unit.
Claim 16
Dependent Claim
53 words
The controller of claim 10, wherein the processing system is further programmed to: measure through the plurality of base receivers a received signal strength of the inbound transmission; and include a base receiver in the subset only when the received signal strength measured for the base receiver is greater than a predetermined threshold.
Claim 17
Dependent Claim
52 words
The controller of claim 10, wherein the processing system is further programmed to: measure through the plurality of base receivers an error rate generated by the inbound transmission; and include a base receiver in the subset only when the error rate measured for the base receiver is less than a predetermined threshold.
Claim 18
Dependent Claim
34 words
The controller of claim 10, wherein the processing system is further programmed to select at least one base transmitter collocated with at least one base receiver of the subset for sending an outbound transmission.
Claim 19
Dependent Claim
37 words
The controller of claim 16, wherein the processing system is further programmed to inactivate all base transmitters collocated with a base receiver of the subset other than the at least one base transmitter during the outbound transmission.
Claim 20
Dependent Claim
28 words
The controller of claim 10, wherein the processing system is further programmed to select the frequency reuse plan such that co-channel transmitter spacing increases as the count increases.
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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) | 2002-11-29 | 2003-05-31 | 2003-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-29 | 2007-05-31 | 2007-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-29 | 2011-05-31 | 2011-11-30 | $7700.00 | Window Closed / Lapsed |