United States Patent 7,701,905
Farley , et al. April 20, 2010
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Employing simulated acknowledgment signals for efficient handoffs in cellular packet networks
Abstract
An improved arrangement is described for maintaining throughput of date packets over a cellular packet network from an Internet server to an end user machine during handoff of a mobile subscriber unit from a first base station to a second base station. The end user machine conventionally generates, in response to successive bytes from the server, acknowledgment signals including here applicable a "zero" acknowledgment signal that advertises a closed receive window at the end user machine and that is effective to pause transmission of data from the server. In response to a handoff start signal from the subscriber unit, a gateway unit associated with the first base station sends to the server a simulated zero acknowledgment signal to pause such transmission. Upon completion of handoff, an actual non-zero acknowledgment signal stored at the gateway unit at the start of handoff is applied to the server to resume transmission from the server to the end user machine.
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Inventors: Farley; Kevin L. (Orlando, FL), Foore; Lawrence Robert (Palm Bay, FL)
Assignee: IPR Licensing, Inc. (Wilmington, DE)
Appl. No.: 11/682,766
Filed: March 6, 2007
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Related U.S. Patent Documents
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Application Number Filing Date Patent Number Issue Date
09823288 Mar., 2001 7187666
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Current U.S. Class: 370/331 ; 370/338; 455/436
Current International Class: H04W 4/00 (20090101)
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