Motorola Corporation

Kenneth Charles Elkin

Stuart S Kreitzer

Gregory O Snowden

Leonard Wayne Bennett

Craig J Christmas

Robert Mark Gorday

JoseE Sanchez

A method of producing a receive signal quality estimate in a subscriber unit (SU) located in a given geographic area covered by a wireless communication system of a kind in which a base station transmits downlink signals in a group of successive time frames directed to a set of geographic areas including an area in which the SU is located, wherein each of the group of successive time frames has signals aimed at a corresponding one of the set of geographic areas. The method comprises the steps of activating a receiver in the SU to listen over a determined listening interval that at least partly coincides with the group of successive time frames; measuring a signal strength of at least one downlink signal received by the SU receiver during the determined listening interval within one of, a time frame of the group of successive time frames corresponding to a geographic area in which the SU is located, and one other time frame of the group of successive time frames corresponding to a geographic area other than the geographic area in which the SU is located; and producing an estimate of receive signal quality at the SU according to a result of the measuring step.

Receive signal quality estimates suitable for pagers used in

Application of power to a transmitter in a messaging device is preceded by measuring a quality of at least one base station down-link signal received by a receiver in the device, and producing a transmit threshold signal when the measured signal quality corresponds to a substantial likelihood of accurate detection by a base station of an up-link signal to be transmitted from the device. The device transmitter is powered on only if the transmit threshold signal is present over a given interval prior to a transmitter operation. Thus, a relatively low-power battery and small antenna can be used effectively by the device, and its overall size kept at a minimum.

Two-way pager with transmit threshold

A radio communication device (100) for displaying information about a signal includes a display (120) for presenting the information. A measurer (110) measures signal quality of the signal received by the radio communication device (100), and an entry element (145) determines from the signal quality whether the radio communication device (100) is out of range. The entry element (145) then stores times of out-of-range conditions in a history table (130). A report element (150) can be activated to drive the display (120) for presentation of the times of the out-of-range conditions. The report element (150) can, for instance, be activated by the user, at periodic times, at specified times, or in response to specific events.

Method and apparatus for displaying signal information in a radio

In a communication system that transmits diversity messages (an original message followed by one or more copies thereof), a selective call receiver (10) which receives an original message and one or more copies will display only one of the received messages and discard the others without displaying them. This is accomplished by storing in a memory (30) the identification tag of the message that was displayed and deleted. The identical identification tags carried by later copies of the same message are compared to the stored identification tag. If a match is found, this indicates that an earlier version of the received message has already been displayed and deleted, whereupon the received copy is discarded.

Growing community of inventors

Lake Worth, FL, United States of America

Kenneth Charles Elkin