Method of uninterrupted software download in heterogeneous mobile communication networks
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United States of America Patent
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Mar 18, 2008
Grant Date -
Nov 25, 2004
app pub date -
May 17, 2004
filing date -
May 21, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of non-real time software download in an IP-based mobile communication system with heterogeneous access technologies is based on the session initiation protocol (SIP). For download recovery in case of handover between a first and a second access networks using different access technologies while a software download session is ongoing, the SIP user agent associated with a handovering terminal, upon detecting the handover, sends, without releasing the ongoing session, a transfer request message to a SIP proxy server that has set up and is currently managing the download session, and that server can start operations necessary in order a new session is set up with the user agent in the new location, under the control of a proxy server entrusted with managing the new session, and download is resumed from said last received packet.
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