Content discovery and transfer between mobile communications nodes
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United States of America Patent
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Jan 24, 2012
Grant Date -
Feb 4, 2010
app pub date -
Jul 31, 2008
filing date -
Jul 31, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
Content discovery and content transfer between mobile communications nodes is often required, for example, to synchronize maps, traffic hot spot information and the like for vehicle mounted satellite navigation devices, pedestrian hand-held personal digital assistants and other mobile communications nodes. In an embodiment, content discovery processes using data structures designed in particular ways and sent using a single packet enable nodes to identify files to be transferred whilst keeping overheads down. In an embodiment a first and a second data structure are used, each being formed from slightly different information about a subset of the files to be synchronized. In another embodiment a single tree-based data structure is used. A process for transferring data between two mobile communications nodes is also described.
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