Method for accessing a trunked communication system
First Claim
1. In a communication system including a communication resource controller capable of synchronously communicating with at least one communication unit, said communication resource controller unit being accessible when an access request transmitted from said communication unit is received during an access time interval, a method for accessing said communication resource controller by said communication unit comprising the steps of:
- a) receiving position information from a global positioning system;
b) determining distance between the communication unit and the communication resource controller based on the position information received from the global positioning system; and
c) adjusting transmission timing of said access request according to the distance between the communication unit and the communication resource controller.
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Accused Products
Abstract
A communication system (100) is provided comprising a communication resource controller (110) which synchronously communicates with a communication unit (120). Communication range of the system is extended by adjusting transmission timing of a channel access request based on position information received from a global positioning system.
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Citations
6 Claims
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1. In a communication system including a communication resource controller capable of synchronously communicating with at least one communication unit, said communication resource controller unit being accessible when an access request transmitted from said communication unit is received during an access time interval, a method for accessing said communication resource controller by said communication unit comprising the steps of:
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a) receiving position information from a global positioning system; b) determining distance between the communication unit and the communication resource controller based on the position information received from the global positioning system; and c) adjusting transmission timing of said access request according to the distance between the communication unit and the communication resource controller. - View Dependent Claims (2, 3, 4)
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5. In a communication system including a communication resource controller capable of synchronously communicating with at least one communication unit, said communication resource controller unit being accessible by said communication unit in response to reception of an access request during an access time interval, an apparatus for accessing said communication resource controller by said communication unit comprising:
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receiver means for receiving a position information from a global positioning system; determination means for determining distance between the communication unit and the communication resource controller based on the position information received from the global positioning system; and timing means for adjusting transmission timing of said access request based on the distance of the communication unit form the communication resource controller. - View Dependent Claims (6)
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Specification