Energy saving protocol for a communication system

Assignee: Motorola Solutions Inc

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Filing: 1990-02-20

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Granted: —

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Expires: 2010-02-20

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Abstract

Abstract A centralized communication system controller (102) measures and stores a historical record of each subscriber unit's communication activity. By examining this historical record, the controller predicts the subscriber unit's communication activity over a future time interval. A code based upon this prediction is transmitted to the subscriber unit (110), which causes the subscriber unit to enter an energy saving mode and deactivate (208) non-essential circuits for a time period represented by the code. In this way, the duration of the "sleep" interval may be optimally varied based upon the subscriber unit's communication history. In another aspect of the invention, unexpected messages for a subscriber unit in the energy saving mode are stored (114) electronically until the conclusion of the "sleep" interval. This message storing function enhances system efficiency when the subscriber unit's communication history does not correlate with actual communication traffic.

Inventors

👤 Jaime A. Borras

Bibliographic Details

Application Number —

Jurisdiction EP

Data Source google_patents

Last Synchronized 2026-11-04 19:48

CPC Classifications

H; H04; H04W; H04W84/00; H04W84/02; H04W84/04; H04W84/08; G; G08; G08B; G08B3/00; G08B3/10; G08B3/1008; G08B3/1016; G08B3/1025; G08B3/1066; H04W52/00; H04W52/02; H04W52/0209; H04W52/0225; H04W52/0229; H04W52/0232; H04W52/0235; H04W52/0251; H04W52/0258; Y; Y02; Y02D; Y02D30/00; Y02D30/70

Claims Analysis

Total Claims: 2

Claim 1

Independent Claim 157 words

In a radio communication system having at least one central station for allocating radio frequency communication channels among a plurality of subscriber units, a method for temporarily deactivating at least one of the plurality of subscriber units, comprising the steps of: (a) determining whether the at least one subscriber unit is non-functional due to a defect or operational fault; (b) deactivating non-essential circuits at the at least one subscriber unit for a time interval in response to a determination that the at least one subscriber is non-functional; (c) reactivating said non-essential circuits by the at least one subscriber unit periodically in order to determine if the fault condition is no longer present at the at least one subscriber unit; and, (d) monitoring the radio communication system if the fault condition is found to be no longer present in step (c) in order to determine if a message has been sent by the at least one central station.

Claim 2

Dependent Claim 125 words

In a radio communication system having at least one central station for allocating radio frequency communication channels among a plurality of subscriber units, a subscriber unit comprising: means for determining whether the subscriber unit is non-functional due to a defect or operational fault; means for deactivating non-essential circuits in the subscriber unit for a time interval in response to a determination that the subscriber is non-functional; means for reactivating the non-essential circuits periodically in order to determine if the fault condition is no longer present at the subscriber unit; and, means for monitoring the radio communication system if the fault condition is found to be no longer present in order to determine if a message has been sent by the at least one central station.

References Cited (Backward Citations)

US4449248A Cited

EP0255048A2 Cited

GB2198912A Cited

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