Fallback procedures for domain name server update in a mobile IP registration
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United States of America Patent
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Apr 16, 2013
Grant Date -
Dec 1, 2011
app pub date -
Jun 1, 2010
filing date -
Jun 1, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A method and/or apparatus for intelligent domain name server selection are provided. A mobile device may wirelessly receive one or more domain name server Internet Protocol (IP) addresses from a network serving agent during a call setup or a network registration. The mobile device then determines whether one or more of the received domain name server IP addresses is valid prior to attempting to contact a domain name server associated with one of the received domain name server IP addresses. A fallback sequence of valid domain name server IP addresses may be generated and provided (either individually or as a group) from a link layer to an application layer for domain name resolution. Received domain name server IP addresses that are geographically closer to a current location of the mobile device or its visited network may be given priority.
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