Motorola Corporation

Rafael Carmon

Mark Shahaf

Eli Arviv

Salomon Serfaty

Eliezer Fogel

Antony John Wray

Matthew Bridle

A method to train a radio includes the steps of: in a radio ( ), receiving a slot of information ( ) containing at least an initial portion ( ) containing training information ( ), a second portion ( ) containing training information ( ), which second portion ( ) is separated from the initial portion ( ), and a concluding portion ( ) containing training information ( ), which concluding portion ( ) is separated from the second portion ( ). The method combining one of the initial portion ( ) with the concluding portion ( ) of a previous slot of information ( ) and the concluding portion ( ) with an initial portion ( ) of a subsequent slot of information ( ) to provide an at least one combined portion of training information. The method using the at least one combined portion of training information and the second portion of training information to train the radio.

Method to train a radio receiver

A method by which a plurality of users share access to a resource such as a common communications channel. Each user is assigned a priority and is provided with a non-uniform probability distribution function corresponding to that priority, with the sum of the several non-uniform probability distribution functions being uniform. Whenever a user wishes to access the resource, the user selects a random number according to its non-uniform probability distribution function and computes an access time based on the selected random number.

Optimized random access scheme for a shared response

A two way radio communication system (20) includes a plurality of radio units (22, 24, 26, 28, 30) communicating via at least one communication resource (34, 36). At least one first radio unit (22, 24, 26, 28, 30) of the plurality of radio units includes a receiver (48) for monitoring available resources of the at least one communication resource (34, 36) and a processor (46) for maintaining a prioritized list (45) of said available at least one communication resources and for selecting the highest priority available communication resource when the at least one radio unit (22, 24, 26, 28, 30) wishes to enter into communication with at least one second radio unit of the plurality of radio units. In this manner, an optimized communication resource is selected for the communication.

Two way radio communication system and method for establishing

A communication method is provided in which mobiles operating in a trunk mode operation transmit a message on a direct mode operation channel indicating a trunk mode operation connection is present. If a mobile outside the range of coverage of the trunking system receives the message it will deduce from the message the slot structure of the trunk mode channel and its timing, and will then be able to transmit a request for a direct mode connection on an appropriate slot of the trunk mode channel. Some or all of the mobiles operating in trunk mode will then be able to switch to direct mode to connect with the mobile outside the range of coverage.

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Holon, Israel

Rafael Carmon