Motorola Corporation

Carl B Olson

Slim S Souissi

Thomas Casey Hill

Gary W Grube

Dwight Randall Smith

Jheroen Pieter Dorenbosch

John Douglas Reed

Robert L Breeden

Paul J Cizek

A wireless communication system receives ( ) a communication specifying a portable subscriber unit ( ) for which the communication is intended, and further indicating an originator location at which an originator of the communication is positioned. The system determines ( ) a recipient location at which the portable subscriber unit is positioned. The system then calculates ( ) a distance between the originator location and the recipient location, and routes ( ) the communication to the portable subscriber unit when the distance meets a distance criterion.

Method for prioritizing a communication in a wireless communication system

A portable subscriber unit (,) provides (,) communications for a user, and monitors (,) a parameter indicative of communication quality during the communications. The portable subscriber unit compares (,) the parameter with a predetermined threshold; and when the communication quality deteriorates (,) such that the parameter reaches the predetermined threshold, the portable subscriber unit determines (,) geographic coordinates corresponding to the location at which the communication difficulty occurred, and adds (,) a communication difficulty report identifying the parameter and the geographic coordinates to a record of communication difficulty reports stored in the portable subscriber unit. When the portable subscriber unit receives (,) a request for the record of communication difficulty reports from a fixed portion (,) of a two-way wireless communication system, the portable subscriber unit communicates (,) the record of communication difficulty reports to the fixed portion.

Method and apparatus in a two-way wireless communication system for detection and deferred reporting of a communication difficulty

A wireless communication system conducts (,) communications between a fixed portion (,) of the wireless communication system and a portable subscriber unit (,) carried by a user; and records (,) a relevant aspect of the communications, thereby producing recorded information. The system determines (,) a current time of day and a current position of the user and makes (,) a comparison of the recorded information with the current time of day and the current position of the user to determine whether an alert is necessary, and generates (,) the alert when the comparison determines the alert is necessary.

Method and apparatus in a wireless communication system for creating a learning function

A wireless communication system receives (,) a communication specifying a portable subscriber unit (,) for which the communication is intended, and further indicating an originator location at which an originator of the communication is positioned. The system determines (,) a recipient location at which the portable subscriber unit is positioned. The system then calculates (,) a distance between the originator location and the recipient location, and routes (,) the communication to the portable subscriber unit when the distance meets a distance criterion.

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.

Test device for analyzing communication channels in a trunked radio

A method and means of automatically accessing several types of radio systems is described. The present invention allows a subscriber unit, which is normally operative in a operator selected radio system, to establish communication with an alternate system if a operator selected system cannot be found. The alternate system may be a conventional single channel mobile relay system or trunked radio system in which the subscriber is authorized to operate. Once communications are established with an alternate communication system, the present invention will periodically attempt to establish communication with the operator selected system while simultaneously attempting to be assigned a higher priority channel in the alternate communication systems according to a priority scan list. Further, the present invention will automatically ignore certain channels which are dedicated for car-to-car use.

Method and apparatus for automatic alternate communications system access

Method to allow a radio transceiver to automatically select from amongst

In a network of communication systems that comprises a plurality of communication systems, the following discloses a method that allows a communication unit that is seeking a communication system to monitor to verify the integrity of both the transmit communication path and the receive communication path. The first step is for the communication unit to acquire synchronization with the communication system. Having acquired synchronization with the communication system, the communication unit receives transmission parameters of the communication system. Based on the transmission parameters, the communication unit calculates a talk-out gain of the transmit communication path and a talk-in gain of the receive communication path and then calculates a transmit communication path loss and a receive communication path loss. The communication unit will access the communication system when the talk-out gain of the transmit communication path is above the transmit communication path loss and when the talk-in gain of the receive communication path is above the receive communication path loss.

Method for seeking a communication system

A trunked radio system range extender extends the range of a trunked radio system by having a second repeater station monitor the control channel for the trunked radio system detect and decode control information and rebroadcast it on to a second control resource. Communications resources from the first trunked radio system are similarly mapped into a second set of communications resources for subsequent broadcast throughout an extended geographic range. The extending repeater station uses the control resource from the first repeater station.

Method and apparatus for extended coverage of a trunked radio

A method of configuring directional antennas to more fully radiate a geographic region serviced by a simulcast radio system can reduce the number of omni-directional antennas used by prior art methods. Directional antennas having significant differences between frontal and rearward radiated signal levels are used to provide large signal amplitude differences when signal phase differences in the simulcast coverage area become appreciable.

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San Carlos, CA, United States of America

Carl B Olson