Method and apparatus for locating a subscriber unit in a communication system

A method for locating a subscriber unit in a cellular communication system, the cellular communication system including a plurality of stationary base stations each having a station ID, at least one mobile base station coupled to the plurality of stationary base stations, the at least one mobile base station having a rotatably mounted directional antenna, and a plurality of subscriber units each having a subscriber ID, the method comprising the steps of:

• a) receiving a communication from one of the plurality of subscriber units at one of the plurality of stationary base stations, wherein the communication includes the subscriber ID of the one of the plurality of subscriber units and the station ID of the one of the plurality of stationary base stations;
• b) determining location of the one of the plurality of stationary base stations;
• c) at a first location wherein the mobile station has been moved towards the location of the one of the plurality of stationary base stations, rotating the rotatably mounted directional antenna to selectively provide a selected communication coverage area about the first location;
• d) receiving a first plurality of call handoff communications and subscriber IDs from a corresponding plurality of subscriber units including the one of the plurality of subscriber units;
• e) storing a first direction of the rotatably mounted directional antenna and the first location of the mobile base station when the subscriber ID of the one of the plurality of subscriber units is received;
• f) at a second location wherein the mobile station has been moved towards the location of the one of the plurality of stationary base stations different from the first location, rotating the rotatably mounted directional antenna to selectively provide a selected communication coverage area about the second location;
• g) receiving a second plurality of call handoff communications and subscriber IDs from a corresponding plurality of subscriber units including the one of the plurality of subscriber units;
• h) storing a second direction of the rotatably mounted directional antenna and the second location of the mobile base station when the subscriber ID of the one of the plurality of subscriber units is received;
• and
• i) determining the location of the one of the plurality of subscriber units using the first and second locations and the first and second stored directions of the rotatably mounted directional antenna.

An apparatus for locating a subscriber unit in a cellular communication system, the cellular communication system including a plurality of stationary base stations each having a station ID, at least one mobile base station coupled to the plurality of stationary base stations, the at least one mobile base station having a rotatably mounted directional antenna, and a plurality of subscriber units each having a subscriber ID, the apparatus comprising:

• a) means for receiving a communication from one of the plurality of subscriber units at one of the plurality of stationary base stations, wherein the communication includes the subscriber ID of the one of the plurality of subscriber units and the station ID of the one of the plurality of stationary base stations;
• b) means for determining location of the one of the plurality of stationary base stations;
• c) at a first location wherein the mobile station has been moved towards the location of the one of the plurality of stationary base stations, means for rotating the rotatably mounted directional antenna to selectively provide a selected communication coverage area about the first location;
• d) means for receiving a first plurality of call handoff communications and subscriber IDs from a corresponding plurality of subscriber units including the one of the plurality of subscriber units;
• e) means for storing a first direction of the rotatably mounted directional antenna and the first location of the mobile base station when the subscriber ID of the one of the plurality of subscriber units is received;
• f) at a second location wherein the mobile station has been moved towards the location of the one of the plurality of stationary base stations different from the first location, means for rotating the rotatably mounted directional antenna to selectively provide a selected communication coverage area about the second location;
• g) means for receiving a second plurality of call handoff communications and subscriber IDs from a corresponding plurality of subscriber units including the one of the plurality of subscriber units;
• h) means for storing a second direction of the rotatably mounted directional antenna and the second location of the mobile base station when the subscriber ID of the one of the plurality of subscriber units is received;
• and
• i) means for determining the location of the one of the plurality of subscriber units using the first and second locations and the first and second stored directions of the rotatably mounted directional antenna.