WIRELESS COMMUNICATION SYSTEM
2 Assignments
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.
46 Citations
31 Claims
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1-16. -16. (canceled)
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17. An access server for facilitating communication of electronic data between a network resource and a wireless communications device, the access server comprising:
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a data processing system in communication with a network resource via a wired network and in communication with a wireless communications device via a wireless network, the data processing system including a protocol stack comprising; (i) a protocol layer comprising a message processor for formatting the electronic data into at least one transport layer data segment, and a message monitor for formatting the at least one transport layer data segment into at least one link layer datagram, the message monitor being configured to monitor transmission of the link layer datagram over the wireless network, and to initiate retransmission of an unsuccessfully transmitted link layer datagram after a retransmission interval of magnitude which increases after a predetermined number of unsuccessful retransmission attempts of the unsuccessfully transmitted link layer datagram, each transport layer data segment and link layer datagram having a respective header, the transport layer header and the link layer header having a combined length less than a TCP/IP header. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method of electronic data communication between a network resource associated with a wired network and a wireless communications device associated with a wired network via an access server associated with the wired network, the access server having a communications protocol stack including a message processor and a message monitor, the method comprising the steps of:
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at the message processor, formatting the electronic data into at least one transport layer data segment; at the message monitor, formatting the at least one transport layer data segment into at least one link layer datagram, each transport layer data segment and link layer datagram having a respective header, the transport layer header and the link layer header having a combined length less than a TCP/IP header; at the message monitor, monitoring transmission of the link layer datagram over the wireless network, and initiating retransmission of an unsuccessfully transmitted link layer datagram after a retransmission interval of magnitude which increases from that magnitude after a predetermined number of unsuccessful retransmission attempts of the unsuccessfully transmitted link layer datagram. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification