Packet data communications
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United States of America Patent
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Sep 15, 2015
Grant Date -
Apr 11, 2013
app pub date -
Sep 13, 2012
filing date -
Aug 12, 2003
priority date (Note) -
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Abstract
An internet packet comprises a header field including a field identifying a source address of the internet packet, a field identifying the destination address of the internet packet and a next header field identifying whether an extension header follows the header and a type of the extension header. The extension header indicates a hop-by-hop option header including a router alert option header type indicating that the extension field is optional for a router to read, and a field providing information for a gateway support node of a packet radio system network. A gateway support node is provided with information, which may be required for example to support a mobile internet protocol (IP). By providing the router alert option field, a router is not required to read the remainder of the hop-by-hop option field.
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