METHOD AND SYSTEM FOR SWITCHING A RADIO ACCESS TECHNOLOGY BETWEEN WIRELESS COMMUNICATION SYSTEMS WITH A MULTI-MODE WIRELESS TRANSMIT/RECEIVE UNIT
First Claim
1. A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
- the WTRU receiving a service from a core network via a cellular radio access network;
the WTRU sending a first message via the cellular radio access network, wherein the first message indicates that the WTRU is capable of communicating using wireless local area network (WLAN) technology;
the WTRU receiving a second message via the cellular radio access network, wherein the second message is responsive to the first message and includes identifiers of two or more wireless networks;
the WTRU initiating a handover to a wireless network from the two or more wireless networks;
the WTRU performing the handover to the wireless network; and
the WTRU receiving the service from the core network via the wireless network.
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Accused Products
Abstract
A method and system for switching a radio access technology (RAT) between wireless communication systems connected to each other while implementing different RATs with a multi-mode WTRU are disclosed. A plurality of wireless communication systems are deployed with overlapping coverage areas wherein each system implements different RATs and are connected to each other such that a service that is provided by one system may be provided through the other system. Each wireless communication system transmits an indication of the existence of an inter-working wireless communication system in a coverage area of each system. The WTRU receives the indication and information regarding the inter-working wireless communication system. The WTRU then initiates a handoff to the inter-working wireless communication system using the received information, whereby the WTRU continues to receive the same services that the WTRU receives from the currently connected wireless communication system through the inter-working wireless communication system.
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Citations
16 Claims
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1. A method for use in a wireless transmit/receive unit (WTRU), the method comprising:
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the WTRU receiving a service from a core network via a cellular radio access network; the WTRU sending a first message via the cellular radio access network, wherein the first message indicates that the WTRU is capable of communicating using wireless local area network (WLAN) technology; the WTRU receiving a second message via the cellular radio access network, wherein the second message is responsive to the first message and includes identifiers of two or more wireless networks; the WTRU initiating a handover to a wireless network from the two or more wireless networks; the WTRU performing the handover to the wireless network; and the WTRU receiving the service from the core network via the wireless network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A wireless transmit/receive unit (WTRU) comprising:
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circuitry configured to receive a service from a core network via a cellular radio access network; circuitry configured to send a first message via the cellular radio access network, wherein the first message indicates that the WTRU is capable of communicating using wireless local area network (WLAN) technology; circuitry configured to receive a second message via the cellular radio access network, wherein the second message is responsive to the first message and includes identifiers of two or more wireless networks; circuitry configured to initiate a handover to a wireless network from the two or more wireless networks; circuitry configured to perform the handover to the wireless network; and circuitry configured to receive the service from the core network via the wireless network. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification