Wireless communication system, server and mobile station therefor
First Claim
1. A wireless communication system comprising a mobile station, a server connected to a network, and a plurality of access points each of which is connected to said network and communicates with said mobile station via one of a plurality of wireless interfaces, wherein said mobile station comprises the plurality of wireless interfaces and a control unit which determines available wireless interfaces, wherein said mobile station sends notification of the available interfaces'"'"' identifiers to said server via one of said plurality of wireless interfaces and transmits a handover request message to execute a handover to another one of the plurality of wireless interfaces to said server, and wherein said server comprises a control unit which collects managerial data from components of said network and selects a wireless interface, based on said notification from said mobile station and said managerial data, and a communication unit which sends notification of the selected wireless interface'"'"'s identifier to said mobile station, wherein said control unit controls packet transmission path routing, based on said handover request message from said mobile station.
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Accused Products
Abstract
This invention provides a wireless communication system wherein a network to which a mobile station should be handed over can be selected, using parametric data collected from network components other than the mobile station. Time taken for a handover between different types of network systems is reduced. The wireless communication system of the present invention comprises a mobile station equipped with multiple wireless interfaces, a server connected to a fixed network, and multiple access points. The mobile station determines available wireless interfaces and sends notification of the available interfaces'"'"' identifiers to the server. The server collects managerial data from network components and selects a wireless interface, based on the notification from the mobile station and the managerial data. The mobile station registers its locations in visiting networks corresponding to multiple available wireless interfaces with the server. The server retains the registrations of mobile station locations for the above wireless interfaces.
162 Citations
20 Claims
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1. A wireless communication system comprising a mobile station, a server connected to a network, and a plurality of access points each of which is connected to said network and communicates with said mobile station via one of a plurality of wireless interfaces,
wherein said mobile station comprises the plurality of wireless interfaces and a control unit which determines available wireless interfaces, wherein said mobile station sends notification of the available interfaces'"'"' identifiers to said server via one of said plurality of wireless interfaces and transmits a handover request message to execute a handover to another one of the plurality of wireless interfaces to said server, and wherein said server comprises a control unit which collects managerial data from components of said network and selects a wireless interface, based on said notification from said mobile station and said managerial data, and a communication unit which sends notification of the selected wireless interface'"'"'s identifier to said mobile station, wherein said control unit controls packet transmission path routing, based on said handover request message from said mobile station.
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9. A server in a wireless communication system comprising a mobile station equipped with a plurality of wireless interfaces, the server connected to a network, and a plurality of access points, each of which is connected to said network and communicates with said mobile station via one of said plurality of wireless interfaces, said server comprising:
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a communication unit which receives notification of available wireless interfaces'"'"' identifiers and a handover request message to execute a handover to one of said plurality of wireless interfaces from said mobile station; and
a control unit which collects managerial data from components of said network and selects a wireless interface, based on said notification and said managerial data, wherein said communication unit sends notification of the selected wireless interface'"'"'s identifier to the mobile station, and wherein said control unit controls packet transmission path routing, based on said-handover request message from the mobile station. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A mobile station in a wireless communication system comprising the mobile station, a server connected to a network, and a plurality of access points, each of which is connected to said network and communicates with said mobile station via one of a plurality of wireless interfaces, said mobile station comprising:
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a plurality of wireless interfaces; and
a control unit which determines available wireless interfaces, sends notification of the available interfaces'"'"' identifiers to said server via one of said plurality of wireless interfaces, and transmits a handover request message to execute a handover to another one of the plurality of wireless interfaces, based on a wireless interface'"'"'s identifier to which the mobile station should be handed over, notified from said server. - View Dependent Claims (17, 18, 19, 20)
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Specification