HANDOVER MESSAGING IN AN UNLICENSED MOBILE ACCESS TELECOMMUNICATIONS SYSTEM
12 Assignments
0 Petitions
Accused Products
Abstract
Methods and messages for performing handovers between an unlicensed mobile access network (UMAN) comprising a first radio access network and a second radio access network. URR (UMA radio resource) handover messages are exchanged between a mobile station (MS) and a UMA network controller (UNC) operating in the UMAN. The MS may access the UMAN via a wireless access point (AP) that is communicatively coupled to the UNC via an IP network. The URR handover messages are sent between the MS and the UNC using an Up interface comprising a set of layered protocols over an underlying IP transport. The handover methods include both handover from a UMAN to the second radio access network, and handover from the second radio access network to the UMAN.
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Citations
52 Claims
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1-25. -25. (canceled)
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26. A computer readable medium, wherein the computer readable medium is a physical storage medium and not propagated signals, the computer readable medium storing a computer program for directing a mobile equipment to perform a handover from a first radio access network comprising an unlicensed wireless system to a second radio access network, the computer program executable by a processor, the computer program comprising sets of instructions for:
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establishing a dedicated connection between the mobile equipment and the unlicensed wireless system via an unlicensed network controller; determining that a handover from the unlicensed wireless system is applicable; sending an HANDOVER REQUIRED message from the mobile equipment to the unlicensed network controller; and receiving a HANDOVER COMMAND message at the mobile equipment from the unlicensed network controller, wherein each of the HANDOVER REQUIRED message and the HANDOVER COMMAND message includes a set of basic information elements (IEs) including; a protocol discriminator; a skip indicator; and a message type via which the message may be identified, wherein the HANDOVER REQUIRED message further includes at least one IE that identifies one or more cells operating in the second radio access network to which the mobile equipment may connect to complete the handover from the unlicensed wireless system. - View Dependent Claims (27, 28, 29, 30)
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31. A computer readable medium, wherein the computer readable medium is a physical storage medium and not propagated signals, the computer readable medium storing a computer program for directing a mobile equipment to perform a handover from a first radio access network to a second radio access network comprising an unlicensed wireless system, the computer program executable by a processor, the computer program comprising sets of instructions for:
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establishing a connection between the mobile equipment and the unlicensed wireless system via an unlicensed network controller; registering into the unlicensed wireless system via the unlicensed network controller; sending a HANDOVER ACCESS message from the mobile equipment to the unlicensed network controller; establishing a channel between the mobile equipment and the unlicensed network controller; sending a HANDOVER COMPLETE message from the mobile equipment to the unlicensed network controller, wherein each of the HANDOVER ACCESS message and the HANDOVER COMPLETE message includes a set of basic information elements (IEs) including; a protocol discriminator; a skip indicator; and a message type via which the message may be identified, wherein the HANDOVER ACCESS message further includes an IE comprising an embedded HANDOVER COMMAND layer 3 message. - View Dependent Claims (32)
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33. A computer readable medium, wherein the computer readable medium is a physical storage medium and not propagated signals, the computer readable medium storing a computer program for directing an unlicensed network controller to operate in an unlicensed wireless system comprising a first radio access network, the computer program executable by at least one processor, the computer program comprising sets of instructions for:
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providing a first network interface comprising an IP (Internet Protocol) network interface; providing a second network interface comprising an Up interface, via which unlicensed wireless system messages are to be transmitted to and received from a mobile equipment via an access point communicatively coupled between the unlicensed network controller and the mobile equipment, the Up interface including a plurality of layers implemented over the IP network interface; providing a third network interface, via which the unlicensed network controller may be connected to a core network that is accessible to a second radio access network; and providing means for generating and processing a plurality of messages transmitted over the Up interface to perform handovers between the unlicensed wireless system and the second radio access network including; a HANDOVER REQUIRED message; a HANDOVER COMMAND message; and a HANDOVER COMPLETE message, wherein each of the HANDOVER REQUIRED message, the HANDOVER COMMAND message, and the HANDOVER COMPLETE message includes a set of basic information elements (IEs) including; a protocol discriminator; a skip indicator; and a message type via which the message may be identified. - View Dependent Claims (34, 35, 36, 37, 38)
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39. A computer readable medium, wherein the computer readable medium is a physical storage medium and not propagated signals, the computer readable medium storing a computer program for directing a mobile equipment, the computer program executable by at least one processor, the computer program comprising sets of instructions for:
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providing a first wireless interface, to access a first radio access network; providing a second wireless interface, to access a second radio access network comprising an unlicensed wireless system via an access point (AP) using an unlicensed radio frequency; providing an Up interface to communicate with the unlicensed wireless system via an unlicensed network controller communicatively coupled to the AP via an Internet Protocol (IP) network; and generating and processing a plurality of messages transmitted over the Up interface to perform handovers between the first wireless network and the unlicensed wireless system including, a HANDOVER REQUIRED message; a HANDOVER COMMAND message; and a HANDOVER COMPLETE message; wherein each of the HANDOVER REQUIRED message, the HANDOVER COMMAND message, and the HANDOVER COMPLETE message includes a set of basic information elements (IEs) including, a protocol discriminator; a skip indicator; and a message type via which the message may be identified. - View Dependent Claims (40, 41, 42, 43, 44, 45)
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46. A method for performing a handover from a first radio access network comprising an unlicensed wireless system to a second radio access network, the method comprising:
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establishing a dedicated connection between the unlicensed wireless system and a mobile equipment via an unlicensed network controller; sending an UPLINK QUALITY INDICATION message from the unlicensed network controller to the mobile equipment; receiving a HANDOVER REQUIRED message at the unlicensed network controller from the mobile equipment; and sending a HANDOVER COMMAND from the unlicensed network controller to the mobile equipment, wherein each of the HANDOVER REQUIRED message and the HANDOVER COMMAND message includes a set of basic information elements (IEs) including; a protocol discriminator; a skip indicator; and a message type via which the message may be identified, wherein the HANDOVER REQUIRED message further includes at least one IE that identifies one or more cells operating in the second radio access network to which the mobile station may connect to complete the handover from the unlicensed wireless system. - View Dependent Claims (47, 48, 49)
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50. A method for performing a handover from a first radio access network to a second radio access network comprising an unlicensed wireless system, the method comprising:
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establishing a connection between a mobile equipment and the unlicensed wireless system via an unlicensed network controller; receiving a HANDOVER ACCESS message at the unlicensed network controller from the mobile equipment; establishing a channel between the unlicensed network controller and the mobile equipment; receiving a HANDOVER COMPLETE message at the unlicensed network controller from the mobile equipment, wherein each of the HANDOVER ACCESS message and the HANDOVER COMPLETE message includes a set of basic information elements (IEs) including; a protocol discriminator; a skip indicator; and a message type via which the message may be identified, wherein the HANDOVER ACCESS message further includes an IE comprising an embedded HANDOVER COMMAND layer 3 message. - View Dependent Claims (51, 52)
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Specification