System and apparatus for avoiding interference between fixed and moveable base transceiver station
First Claim
1. A method for providing cellular service aboard a ship, comprising:
- providing first and second cellular coverage zones, the first zone being substantially confined to an interior of the ship and the second zone providing an effective range of coverage above-deck or outside the ship;
reducing, in response to interference above a desired level between the second zone and a land-based cellular node, the effective range of coverage of the second zone;
wherein said reducing does not change the area covered by the first cellular coverage zone.
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Accused Products
Abstract
Apparatus for providing telephone connection between one or more cellular radio telephones and a cellular radio switching system, comprises at least one moveable base transceiver station (511) for providing a radio connection with the cellular radio telephones, and having means for detecting whether the moveable base transceiver stations are in range of a fixed base transceiver station (543), and means for controlling the output of the moveable base transceiver stations (511) when such a fixed base transceiver station is detected such that transmissions from the moveable base stations do not interfere with transmissions from the fixed base station within a predetermined area surrounding the fixed base station (543). The system may also include a position finding system (590, 591), linked to the output control such that transmissions from the transmitter (511) cannot be detected within a predetermined area (T).
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Citations
13 Claims
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1. A method for providing cellular service aboard a ship, comprising:
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providing first and second cellular coverage zones, the first zone being substantially confined to an interior of the ship and the second zone providing an effective range of coverage above-deck or outside the ship; reducing, in response to interference above a desired level between the second zone and a land-based cellular node, the effective range of coverage of the second zone; wherein said reducing does not change the area covered by the first cellular coverage zone. - View Dependent Claims (2, 3)
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4. A method of providing ship-based cellular service aboard a ship as the ship approaches another cellular network, the method comprising:
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providing, when the ship is outside of a first predetermined distance from the another cellular network, a first effective range for the ship-based cellular coverage; maintaining, when the ship is outside of a second distance from the another cellular network but within the first distance, the ship-based cellular service at a second effective range, which is smaller than the first effective range; and suspending said ship-based cellular service when the ship is within the second distance. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. A ship, comprising:
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first and second sections of said ship, said first section including the external portions of the ship and said second section including at least below decks areas of said ship; first and second cellular networks dedicated to said first and second sections, respectively; means for controlling an effective range of the first cellular network to prevent the first cellular network from providing cellular service to cellular devices outside the legal jurisdiction of the ship; wherein an effective range of the second cellular network does not change in association with a change in the effective range of the first cellular network. - View Dependent Claims (13)
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Specification