Sub-segment based transport layer protocol for wireless medium
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United States of America Patent
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Jun 21, 2011
Grant Date -
Dec 1, 2005
app pub date -
May 3, 2005
filing date -
May 5, 2004
priority date (Note) -
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Abstract
The invention enables the use of TCP protocol for reliable transport of data over a wireless network, resolving the problems associated with frequent packet loss. Additional benefits include delivery of significant performance improvement, bandwidth saving and backward compatibility compared to the wire-line TCP protocol, and contribution to power savings in wireless handsets and devices. To make the retransmission process more granular, transport layer segments are subdivided into sub-segments. The invention utilizes a split TCP based approach and produces a series of smaller-sized segments that share the same transport layer header. A NACK-based message exchange, a new header format and a special windowing protocol are used to achieve reliability, flow-control, and efficient buffer handling.
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