WIRELESS COMMUNICATION SYSTEM
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0 Petitions
Accused Products
Abstract
A network controller for facilitating roaming of a mobile wireless communications device between access points communicates with at least one access point over a wired network which, in turn, communicate with a mobile wireless communications device over a wireless network. The network controller includes a data processing system including a protocol stack that facilitates a communication session between the mobile device and a network device on the wired network, and a session table identifying session information for each said communication session. The session information identifies the current access point with which the mobile device is currently associated. The protocol stack updates the session table from session information received from the current access point, maintains a first virtual circuit with the network device, maintains a second virtual circuit with the current access point, and bridges communication between the virtual circuits in accordance with the session information.
31 Citations
31 Claims
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1-16. -16. (canceled)
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17. A system for a mobile wireless communication, comprising:
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one or more access points, each being accessible from a wireless mobile device, the mobile device being associated with a current access point among the one or more access points;
a network controller for communication between a network device and the current access point, the current access point encapsulating first datagram from the mobile device into second datagram;
the network controller comprising;
a first protocol layer configured to maintain a first virtual circuit between the network controller and the network device;
a second protocol layer configured to maintain a second virtual circuit between the network controller and the current access point; and
an intermediate protocol layer configured to bridge communication between the first and second virtual circuits through mapping, the second protocol layer is configured to extract the second datagram encapsulated into third datagram received via the second virtual circuit and pass it to the intermediate protocol layer for transmission to the network device, the second protocol layer being configured to receive fourth diagram from the intermediate protocol layer and encapsulate the fourth diagram for transmission to the current access point. - View Dependent Claims (18, 19, 20, 31)
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21. A system for a mobile wireless communication, the system comprising:
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a data processing system including a protocol stack for facilitating a communication session between a mobile device and a network device, the protocol stack comprising;
a first protocol layer configured to maintain a first virtual circuit between the system and the network device;
a second protocol layer configured to maintain a second virtual circuit between the system and a current access point associated with the mobile device; and
an intermediate protocol layer configured to bridge communication between the first and second virtual circuits through mapping, the second protocol layer being configured to extract a transport layer data segment encapsulated in a base station link layer datagram from the current access point over the second virtual circuit, message data from the mobile device being encapsulated in the transport layer data segment, the second protocol layer further configured to transmit the extracted transport layer data segment to the intermediate protocol layer for transmission to the network device. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method for a mobile wireless communication, comprising the steps of:
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at a current access point, encapsulating first datagram from a mobile device for transmission to a network controller;
at a network controller for communication between a network device and the current access point, at a first protocol layer, maintaining a first virtual circuit between the network controller and the network device;
at a second protocol layer, maintaining a second virtual circuit between the network controller and the current access point;
at an intermediate protocol layer, bridging communication between the first and second virtual circuits;
at the second protocol layer, extracting the second datagram encapsulated into third datagram received via the second virtual circuit and passing it to the intermediate protocol layer for transmission to the network device; and
at the second protocol layer, receiving fourth diagram from the intermediate protocol layer and encapsulating the fourth diagram for transmission to the current access point. - View Dependent Claims (29)
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28. A method for a mobile wireless communication, comprising the steps of:
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at a first protocol layer, maintaining a first virtual circuit between a network controller and a network device;
at a second protocol layer, maintaining a second virtual circuit between the network controller and a current access point associated with a mobile device;
at an intermediate protocol layer, bridging communication between the first and second virtual circuits;
at the second protocol layer, extracting a transport layer data segment encapsulated in a base station link layer datagram from the current access point over the second virtual circuit, message data from the mobile device being encapsulated in the transport layer data segment, at the second protocol layer, transmitting the extracted transport layer data segment to the intermediate protocol layer for transmission to the network device. - View Dependent Claims (30)
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Specification