Call hand-off with user selectable site switching
First Claim
1. A trunked communication system with at least two communication sites, each with a coverage area, communication resources, and a communication resource allocator, wherein each of the communication sites is assigned at least some of the communication resources, comprising:
- means for assigning a communication resource from a first communication site to a communication device for a call;
means for determining when said communication device is near an edge of the coverage area of said first communication site during said call;
means, coupled to said means for determining, for leaving said communication resource from said first communication site;
means, coupled to said means for leaving, for requesting a communication resource from a second site for said communication device; and
means for returning said communication device to said communication resource from said first communication site during said call when the communication resources from said second site are busy.
1 Assignment
0 Petitions
Accused Products
Abstract
In a trunked communication system with at least two communication sites, a call hand-off mid-call may occur when a mobile radio (109) moves from the coverage area of one site to the coverage area of another site. This second site may not have any communication resources available for this hand-off, and the radio (109) is issued a busy message. With user selectable site switching, the user may enter into the radio (221) the desire to return to the previous site, and the radio moves to the previous channel to continue (229) receiving the call.
40 Citations
20 Claims
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1. A trunked communication system with at least two communication sites, each with a coverage area, communication resources, and a communication resource allocator, wherein each of the communication sites is assigned at least some of the communication resources, comprising:
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means for assigning a communication resource from a first communication site to a communication device for a call; means for determining when said communication device is near an edge of the coverage area of said first communication site during said call; means, coupled to said means for determining, for leaving said communication resource from said first communication site; means, coupled to said means for leaving, for requesting a communication resource from a second site for said communication device; and means for returning said communication device to said communication resource from said first communication site during said call when the communication resources from said second site are busy. - View Dependent Claims (2, 3)
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4. A trunked communication system with at least two communication sites, each with a coverage area, communication resources, and a communication resource allocator, wherein each of the communication sites is assigned at least some of the communication resources, comprising:
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means for assigning a communication resource from a first communication site to a communication device for a call; means for determining when said communication device is near an edge of the coverage area of said first communication site during said call; means, coupled to said means for determining, for leaving said communication resource from said first communication site; means, coupled to said means for leaving, for requesting a communication resource from a second site for said communication device; means for returning said communication device to said communication resource from said first communication site during said call when the communication resources from said second site are busy; and means, coupled to said means for requesting, for deallocating said communication resource from said first communication site after expiration of a timer.
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5. A method of communication resource allocation in a trunked communication system with at least two communication sites, each with a coverage area, communication resources, and a communication resource allocator, wherein each of the communication sites is assigned at least some of the communication resources, comprising the steps of:
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assigning a communication resource from a first communication site to a communication device for a call; determining when said communication device is near an edge of the coverage area of said first communication site during said call; leaving, responsive to said step of determining, said communication resource from said first communication site; requesting, responsive to said step of leaving, a communication resource from a second site for said communication device; and returning said communication device to said communication resource from said first communication site during said call when the communication resources from said second site are busy. - View Dependent Claims (6, 7, 8)
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9. A method of communication resource allocation in a trunked communication system with at least two communication sites, each with a coverage area, communication resources, and a communication resource allocator, wherein each of the communication sites is assigned at least some of the communication resources, comprising the steps of:
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assigning a communication resource from a first communication site to a communication device for a call; determining when said communication device is near an edge of the coverage area of said first communication site during said call; leaving, responsive to said step of determining, said communication resource from said first communication site; requesting, responsive to said step of leaving, a communication resource from a second site for said communication device; returning said communication device to said communication resource from said first communication site during said call when the communication resources from said second site are busy; and deallocating, responsive to said step of requesting, said communication resource from said first communication site after expiration of a timer.
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10. A communication device for use in a trunked communication system with at least two communication sites, each with a coverage area, communication resources, and a communication resource allocator, wherein each of the communication sites is assigned at least some of the communication resources, comprising:
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means for receiving a call on a communication resource in a first communication site; means, coupled to said means for receiving, for determining when the communication device is near an edge of the coverage area of said first communication site during said call; means, coupled to said means for determining, for leaving said communication resource from said first communication site; means, coupled to said means for leaving, for requesting a communication resource from a second communication site in the trunked communication system; means for receiving a busy message in response to said request for said communication resource from said second communication site; means, coupled to said means for receiving said busy message, for notifying a user of said received busy message; and means, coupled to said means for notifying, for returning the communication device to said communication resource from said first communication site during said call. - View Dependent Claims (11, 12, 13, 14)
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15. A method of communication resource allocation in a communication device, with user access, receiving a call on a communication resource in a first communication site, with a coverage area, in a trunked communication system with a communication resource allocator and a second communication site, with a coverage area, with at least two communication resources comprising the steps of:
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determining when said communication device is near an edge of the coverage area of the first communication site during the call; leaving, responsive to said step of determining, said communication resource from said first communication site; requesting, responsive to said step of leaving, a communication resource from the second communication site in the trunked communication system; receiving, responsive to said step of requesting, a busy message from the second communication site; notifying the user of said received busy message; and returning, responsive to said step of notifying, the communication device to the communication resource from the first communication site during said call. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification