Handoff between digital wireless office system (DWOS) radio-infrastructure units using a conference call
First Claim
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1. In an autonomous private radio communication system, a method for performing a mobile terminal hand-off between two communication control units, comprising:
- providing a first communication control unit and a second communication control unit;
connecting a first transceiver to said first communication control unit and a second transceiver to said second communication control unit;
providing radio communication between said first transceiver and a mobile terminal;
handing off said mobile terminal to a select frequency on said second transceiver;
discontinuing said communication between said mobile terminal and said first transceiver unit;
setting up a conference call between said mobile terminal on said selected frequency and a second frequency on said second transceiver unit;
handing off said mobile terminal on said select frequency to said second frequency on said second transceiver thus completing a mobile terminal handoff between said first communication control unit and said second communication control unit.
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Abstract
An apparatus performs an inter-radio-infrastructure handoff (“inter-RI handoff”) in a private mobile communication system when a mobile terminal roams from a first area served by a first radio-infrastructure (RI) to a second area served by a second RI unit. The system comprises a first RI unit connected to a first radiohead (RH), and a second RI unit connected to a second RH. An inter-RI handoff is performed using a conference call.
88 Citations
20 Claims
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1. In an autonomous private radio communication system, a method for performing a mobile terminal hand-off between two communication control units, comprising:
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providing a first communication control unit and a second communication control unit;
connecting a first transceiver to said first communication control unit and a second transceiver to said second communication control unit;
providing radio communication between said first transceiver and a mobile terminal;
handing off said mobile terminal to a select frequency on said second transceiver;
discontinuing said communication between said mobile terminal and said first transceiver unit;
setting up a conference call between said mobile terminal on said selected frequency and a second frequency on said second transceiver unit;
handing off said mobile terminal on said select frequency to said second frequency on said second transceiver thus completing a mobile terminal handoff between said first communication control unit and said second communication control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 17, 18, 19, 20)
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12. An autonomous private communication system comprising:
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a first fixed communication interface unit connected to a first transceiver, said first fixed communication interface unit being capable of processing a mobile terminal call via said first transceiver;
a second fixed communication interface unit connected to a second transceiver, said second fixed communication interface unit being capable of processing a mobile terminal call via said second transceiver; and
a connection between said first fixed communication interface unit and said second fixed communication interface unit, where said first and said second fixed communication interface units include higher-node functionality wherein a call between a mobile terminal and said first transceiver is handed off to said second transceiver using a conference call between said first and second communication units as a vehicle to perform said handoff.
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16. In a private autonomous communication system, a communication controller comprising:
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an interface for interfacing with a plurality of transceivers; and
a central processing unit (CPU) for implementing a mobile terminal call handoff to another communication controller using a conference call, said CPU being operably coupled to said interface.
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Specification