Method and apparatus for adjusting a communication strategy in a radio communication system using location

A selective call signal control device for transmitting selective call signals to a selective call radio with improved reliability, said selective call signal control device comprising:

• a transmitter for transmitting selective call signals to selective call radios using selectable transmission strategies;
• a receiver for receiving selective call re-transmission requests comprising a request to re-transmit a first selective call signal, said request including a geographic location corresponding to said selective call radio;
• processor means, in communication with said receiver, for processing said request received from said receiver and for determining a selected communication strategy according to said geographic location;
• and
• an adjustable transmission means, in communication with said transmitter, for automatically activating said selected communication strategy corresponding to said geographic location, wherein said adjustable transmission means transmits to said selective call radio an indication of said selected communication strategy prior to re-transmitting said first selective call signal using said selected communication strategy.

A method used in a selective call radio for requesting re-transmission of a first selective call signal from a selective call signal transmission station to the selective call radio using an adaptively selected communication strategy based on a geographic location of said selective call radio, said method comprising the steps of:

• (a) receiving the first selective call signal from said selective call transmission station:
• (b) detecting an unacceptable level of errors in said first selective call signal;
• (c) determining a geographic location of said selective call radio in response to step (b);
• (d) transmitting a selective call signal request in response to step (b) from said selective call radio, including a request to re-transmit said first selective call signal, said request including said geographic location;
• and
• (e) implementing said adaptively selected communication strategy in said selective call radio in response to an indication of said adaptively selected communication strategy received by said selective call radio.

A method used in a selective call signal communication system including at least one selective call radio and at least one selective call signal transceiver station, said transceiver station for transmitting selective call signals to said selective call radio and for receiving transmission requests from said selective call radio, said method comprising the steps of:

• (a) transmitting a first selective call signal to said selective call radio;
• (b) receiving by said transceiver station a re-transmission request from said selective call radio as a result of an unacceptable level of errors detected by said selective call radio in said first selective call signal, said re-transmission request including a geographic location of said selective call radio;
• (c) selecting a new communication strategy corresponding to said geographic location so as to overcome the unacceptable level of errors in a re-transmission of said first selective call signal;
• (d) transmitting to said selective call radio an indication of said selected communication strategy;
• and
• (e) re-transmitting said first selective call signal to said selective call radio using said selected communication strategy.

A selective call radio that is capable of initiating transmission of a first selective call signal, said selective call radio comprising:

• radio location determination means for determining a geographic location of said selective call radio;
• a transceiver for receiving selective call signals and for selectively transmitting a request for transmission of said first selective call signal;
• and
• processing means, in electrical communication with said transceiver and said radio location determination means, for processing received selective call signals and for initiating transmission of said request in response to a prior selective call signal that indicates the first selective call signal is available at a control station and that indicates a message length of the first selective call signal, and for generating said request including said geographic location when the message length of said first selective call signal exceeds a predetermined value and for implementing an adaptively selected communication strategy which is based on said geographic location of said selective call radio.

A selective call signal control device for transmitting selective call signals to a selective call radio with improved reliability, said selective call signal control device comprising:

• a transmitter for transmitting selective call signals to selective call radios, wherein the transmitter transmits a message length of a first selective call signal using a default communication strategy;
• a receiver for receiving selective call transmission requests comprising a request to transmit said first selective call signal, said request including a geographic location corresponding to said selective call radio;
• processor means, in communication with said receiver, for processing said request received from said receiver and for determining a selected communication strategy according to said geographic location;
• and
• an adjustable transmission means, in communication with said transmitter, for automatically activating said selected communication strategy corresponding to said geographic location, wherein said adjustable transmission means transmits to said selective call radio an indication of said selected communication strategy prior to transmitting said first selective call signal using said selected communication strategy.

A selective call radio that is capable of initiating re-transmission of a first selective call signal, said selective call radio comprising:

• radio location determination means for determining a geographic location of said selective call radio;
• a transceiver for receiving selective call signals including said first selective call signal and for selectively transmitting a request for re-transmission of said first selective call signal, said request including said geographic location;
• and
• processing means, in electrical communication with said transceiver and said radio location determination means, for processing received selective call signals and for initiating transmission of said request in response to said processing means detecting an unacceptable level of errors in said first selective call signal, and for implementing an adaptively selected communication strategy in said transceiver in response to a selection of said adaptively selected communication strategy determined by a comparison of said geographic location with geographic locations listed in the selective call radio having preselected communication strategies known to overcome interference.

A selective call radio that is capable of initiating re-transmission of a first selective call signal, said selective call radio comprising:

• radio location determination means for determining a geographic location of said selective call radio;
• a transceiver for receiving selective call signals including said first selective call signal and for selectively transmitting a request for re-transmission of said first selective call signal, said request including an indication of said adaptively selected communication strategy;
• and
• processing means, in electrical communication with said transceiver and said radio location determination means, for processing received selective call signals and for initiating transmission of said request in response to said processing means detecting an unacceptable level of errors in said first selective call signal, and for implementing an adaptively selected communication strategy in said transceiver in response to a selection of said adaptively selected communication strategy determined by a comparison of said geographic location with locations listed in the selective call radio having preselected communication strategies known to overcome interference.

A method used in a selective call radio for requesting transmission of a first selective call signal from a selective call signal transmission station to the selective call radio using an adaptively selected communication strategy based on a geographic location of said selective call radio, said method comprising the steps of:

• (a) receiving a message length of a first selective call signal from said transmission station using a default communication strategy;
• (b) detecting said message length as exceeding a predetermined length;
• (c) determining a geographic location of said selective call radio in response to step (b);
• (d) transmitting a selective call signal request in response to step (b) from said selective call radio, including a request to transmit said first selective call signal, said request including said geographic location;
• and
• (e) implementing said adaptively selected communication strategy which is based on said geographic location of said selective call radio.

A method used in a selective call radio for requesting re-transmission of a first selective call signal from a selective call signal transmission station to the selective call radio using an adaptively selected communication strategy based on a geographic location of said selective call radio, said method comprising the steps of:

• (a) receiving said first selective call signal from said transmission station;
• (b) detecting an unacceptable level of errors in said first selective call signal;
• (c) determining a geographic location of said selective call radio in response to step (b);
• (d) transmitting a selective call signal request in response to step (b) from said selective call radio, including a request to re-transmit said first selective call signal, said request including said geographic location;
• and
• (e) selecting said adaptively selected communication strategy by comparing said geographic location with geographic locations listed in the selective call radio having preselected communication strategies known to overcome interference;
• and
• (f) implementing said adaptively selected communication strategy in said selective call radio in response to step (e).

A method used in a selective call radio for requesting re-transmission of a first selective call signal from a selective call signal transmission station to the selective call radio using an adaptively selected communication strategy based on a geographic location of said selective call radio, said method comprising the steps of:

• (a) receiving said first selective call signal from said transmission station;
• (b) detecting an unacceptable level of errors in said first selective call signal;
• (c) determining a geographic location of said selective call radio in response to step (b);
• (d) selecting said adaptively selected communication strategy by comparing said geographic location with geographic locations listed in the selective call radio having preselected communication strategies known to overcome interference (e) transmitting a selective call signal request in response to step (b) from said selective call radio, including a request to re-transmit said first selective call signal, said request including an indication of said adaptively selected communication strategy;
• and
• (f) implementing said adaptively selected communication strategy in said selective call radio in response to a selective call signal received from the selective call signal transmission station.