Motorola Corporation

Leonard M Wurtzel

David Bar-On

Daniel J McDonald

David Bar On

Leeba Salzman

A communication system includes a central unit (18), a plurality of remote units and a plurality of uplink and downlink communication resources (10, 12) for communication between the central unit (18) and the plurality of remote units. A signaling channel is provided on one of the plurality of downlink communication resources (10) and traffic channels are provided on the plurality of uplink communication resource (12). Signaling information is provided on the downlink signaling channel indicating positively which of one or more of the plurality of uplink communication resources (12) is to be used for temporary transmission of message data by at least one of the plurality of remote units, independent of downlink communication resource (10) allocation.

Method for transmitting voice and data in a communication system

A method of operation of a radio communications system having a controller controlling communications of a plurality of communicating units on a plurality of communication channels. The method includes the steps of a first communications unit transmitting a call request (100) to the controller and the controller reserving a first communications channel for a communications unit required in the requested call. The controller allocates the first communications channel for temporary communications to other communicating units whilst waiting for the availability of a second communications channel for the requested call, wherein the second communications channel is to be allocated to a second communications unit required in the requested call. A communications system having a channel allocation controller (12) having a list of communications channels (16) with reserved indicators (18) indicative of the status of reserved communications channels.

Communications system and method of operation

A multi-user radio system, such as a trunked radio system has sets of operations ('storm plans') for execution in emergency situations. A central control and management processor is arranged to define a list of users (20) associated with a respective storm plan and to permit the defined users to execute the respective storm plan.

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Kochav Yair, Israel

Leonard M Wurtzel