Apparatus for supporting the handover of a telecommunication session between a licensed wireless system and an unlicensed wireless system
First Claim
1. A method comprising:
- at an indoor system server of an unlicensed wireless communication system, establishing a connection between a mobile station and the unlicensed wireless communication system through the indoor system server, wherein the mobile station is in a communication session with a licensed wireless communication system;
receiving, at the indoor system server, a handover request message from the licensed wireless communication system indicating that a handover of the communication session is required;
selecting a handover reference value (HO-Ref) by the indoor system server; and
sending a handover acknowledge message comprising the HO-Ref from the indoor system server to the licensed wireless communication system.
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Accused Products
Abstract
The invention discloses a wireless communication handset comprising licensed wireless communication signal processing circuitry and unlicensed wireless communication signal processing circuitry. The invention further discloses a control circuit connected to both the licensed wireless communication signal processing circuitry and the unlicensed wireless communication signal processing circuitry, and a computer readable memory for directing the control circuit to function in a specified manner. This memory includes instructions to formulate a measurement report containing signal strength information that corresponds to the strength of a signal received through the unlicensed wireless communication signal processing circuitry. The measurement report also contains a request to transfer a wireless communication session from a licensed wireless system to an unlicensed wireless system. The memory further includes instructions to transmit the measurement report to the licensed wireless system through the licensed wireless communication signal processing circuitry.
271 Citations
16 Claims
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1. A method comprising:
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at an indoor system server of an unlicensed wireless communication system, establishing a connection between a mobile station and the unlicensed wireless communication system through the indoor system server, wherein the mobile station is in a communication session with a licensed wireless communication system; receiving, at the indoor system server, a handover request message from the licensed wireless communication system indicating that a handover of the communication session is required; selecting a handover reference value (HO-Ref) by the indoor system server; and sending a handover acknowledge message comprising the HO-Ref from the indoor system server to the licensed wireless communication system. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer readable medium storing a computer program for execution by a processor of an indoor system server of an unlicensed wireless communication system, the computer program comprising:
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a set of instructions for establishing a connection between the indoor system server and a mobile station, wherein the mobile station has established an ongoing communication session using a licensed wireless communication system; a set of instructions for receiving, at the indoor system server, a handover request from the licensed wireless communication system indicating the licensed wireless communication system has determined that a handover of the communication session is required; a set of instructions for selecting a handover reference value (HO-Ref) by the indoor system server; and a set of instructions for sending a handover acknowledge message comprising the HO-Ref from the indoor system server to the licensed wireless communication system. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An indoor system server to operate in an unlicensed wireless communication system, the indoor system server for facilitating a handover of an active call of a mobile station from a licensed wireless communication system to the unlicensed wireless communication system, the indoor system server comprising:
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a) a first interface for establishing a connection with the mobile station through which messages are sent to and received from the mobile station; b) a second interface for connecting the unlicensed wireless communication system to the licensed wireless communication system; and c) circuits for handling a set of messages exchanged with the licensed wireless communication system through the second interface, said set of messages comprising (i) a handover request message received from the licensed wireless communication system and (ii) a handover acknowledge message sent to the licensed wireless communication system through the second interface, wherein the indoor system server is for selecting a handover reference value (HO-Ref) to identify the active call, wherein said handover acknowledge message comprises said HO-Ref. - View Dependent Claims (14, 15, 16)
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Specification