Wireless communication handover method and apparatus
First Claim
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1. A method comprising:
- while using a first wireless communication system to facilitate at least a first wireless communication and in response to detecting at least one handover condition;
automatically using a second wireless communication system to establish a communication link to a private branch exchange (PBX) that is associated with the first wireless communication system;
automatically transmitting to the PBX using the communication link a pre-established message to trigger a handover of the first wireless communication from the first wireless communication system to the second wireless communication system;
continuing the first wireless communication using the second wireless communication system instead of the first wireless communication system.
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Abstract
When using a first wireless communication system to facilitate at least a first wireless communication and in response to detecting at least one handover condition, a mobile station can automatically use a second wireless communication system to establish a communication link to a private branch exchange that is associated with the first wireless communication system and automatically transmit a pre-established message to the private branch exchange to trigger a handover of the first wireless communication from the first wireless communication system to the second wireless communication system.
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Citations
31 Claims
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1. A method comprising:
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while using a first wireless communication system to facilitate at least a first wireless communication and in response to detecting at least one handover condition;
automatically using a second wireless communication system to establish a communication link to a private branch exchange (PBX) that is associated with the first wireless communication system;
automatically transmitting to the PBX using the communication link a pre-established message to trigger a handover of the first wireless communication from the first wireless communication system to the second wireless communication system;
continuing the first wireless communication using the second wireless communication system instead of the first wireless communication system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A multi-mode wireless mobile station comprising:
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a first wireless communication system handover condition detector;
a memory having stored therein a message comprising a handover trigger and an address for a private branch exchange (PBX) that is associated with the first wireless communication system;
a second wireless communication system transmitter;
a handover facilitator that;
is operably coupled to the memory;
is responsive to the first wireless communication system handover condition detector;
has a PBX address output operably coupled to a communication target address input of the second wireless communication system transmitter;
has a handover message trigger output operably coupled to a message input of the second wireless communication system transmitter. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method for facilitating a handover of a wireless communication from a first wireless communication system to a second wireless communication system that is different than the first wireless communication system comprising:
- at a dual mode mobile station;
detecting a handover condition with respect to the wireless communication;
while continuing the wireless communication using the first wireless communication system, automatically using the second wireless communication system to transmit a handover trigger message to a private branch exchange (PBX) that is associated with the first wireless communication system;
at the PBX;
receiving the handover trigger message;
transferring the wireless communication to the second wireless communication system and concluding the first wireless communication system facilitation of the wireless communication;
at the dual mode mobile station;
dropping the first wireless communication system while maintaining the wireless communication using the second wireless communication system. - View Dependent Claims (27, 28, 29, 30, 31)
- at a dual mode mobile station;
Specification