WIRELESS INTELLIGENT SWITCH ENGINE
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Abstract
A wireless intelligent switch engine (WISE) is described. The wireless intelligent switch engine provides for automatic switching between different physical wireless interfaces in mobile devices while roaming to maintain a wireless network connection. WISE functions as a bridge between a mobile device and multiple wireless network interfaces to provide automatic and seamless switching among networks while roaming. The mobile device sees WISE as a LAN interface and communicates with WISE using the TCP/IP protocol stack, thus providing a PPP-less configuration that uses the TCP/IP protocol stack regardless of the wireless interface.
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Citations
92 Claims
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1-72. -72. (canceled)
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73. An apparatus for switching between network interfaces, comprising:
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a switch engine configured for operating at the data link layer of a protocol stack for a given interconnection model configured for operation with multiple network interfaces; said switch engine configured to automatically select and establish a network connection session for a mobile device through an active interface, within the multiple network interfaces; and a bridge formed by said switch engine between at least two associated wireless network interfaces of different types in response to the mobile device roaming among different wireless networks having different network interfaces, without closing and restarting the network connection session which has been established. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80, 81)
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82. An apparatus for multiple-network communications, comprising:
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a mobile device configured for establishing a network connection session for communicating with different types of wireless networks through multiple network interfaces; and a switch engine, configured for operation within a data link layer of a protocol stack of said mobile device, for automatically selecting one of said multiple network interfaces in response to said mobile device roaming between the different types of wireless networks, and without closing and restarting the network connection session. - View Dependent Claims (83, 84, 85, 86, 87, 88)
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89. A method of mobile device communication when roaming across multiple networks without closing and restarting network connection sessions, comprising:
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selecting a network interface for a network connection session, from multiple network interfaces available to a mobile device, when roaming across multiple networks, in response to determining frame quality and using tag control information to identify the network interface; and bridging between the mobile device and associated network interfaces within the protocol stack of the mobile device, and automatically switching between the network interfaces as the mobile device roams between multiple networks; wherein said bridging is performed between different types of wireless networks without closing and restarting the network connection session. - View Dependent Claims (90, 91, 92)
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Specification