Method and apparatus for reducing noise interference to improve outbound message reliability in a two-way messaging system

A controller for transmitting an outbound message in a two-way messaging system having a plurality of cells employing frequency reuse, the controller comprising:

• a processing system for directing operation of the controller;
• an input interface coupled to the processing system for accepting the outbound message originated by a user;
• a transceiver interface coupled to the processing system for controlling a base transceiver for transmitting the outbound message and for receiving an acknowledgment response;
• and
• a timer coupled to the processing system for controlling the processing system to await a positive acknowledgment confirming that the outbound message was received with an acceptable quality,
• wherein the processing system is programmed for transmitting the outbound message utilizing a first frequency reuse plan throughout the plurality of cells, and
• wherein the processing system is programmed for retransmitting the outbound message utilizing a second frequency reuse plan throughout the plurality of cells, in response to receiving a negative acknowledgment and also in response to failing to receive any acknowledgment within a predetermined time after transmitting the outbound message.

A two-way messaging system for transmitting an outbound message, the two-way messaging system having a plurality of cells employing frequency reuse, the two-way messaging system comprising:

• a controller for controlling operation of the two-way messaging system;
• a plurality of base transceivers coupled to the controller for transmitting the outbound message and for receiving an acknowledgment response;
• and
• a selective call transceiver coupled by radio with at least one of the plurality of base transceivers for receiving the outbound message and for generating the acknowledgment response;
• wherein the controller comprises:
• a processing system for directing operation of the controller;
• an input interface coupled to the processing system for accepting the outbound message originated by a user;
• a transceiver interface coupled to the processing system for controlling the plurality of base transceivers for transmitting the outbound message and for receiving the acknowledgment response;
• and
• a timer coupled to the processing system for controlling the processing system to await a positive acknowledgment confirming that the outbound message was received with an acceptable quality,
• wherein the processing system is programmed for transmitting the outbound message utilizing a first frequency reuse plan, and
• wherein the processing system is programmed for retransmitting the outbound message utilizing a second frequency reuse plan, in response to receiving a negative acknowledgment and also in response to failing to receive any acknowledgment within a predetermined time after transmitting the outbound message.