Circuit switch fallback (CSFB) for an LTE mobile network
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United States of America Patent
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Jul 12, 2016
Grant Date -
Jan 29, 2015
app pub date -
Jul 29, 2014
filing date -
Jul 29, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
CSFallback controller allows a long term evolution (LTE) supporting telephone handset to communicate over a network that does not support LTE voice calls, using circuit-switch fallback (CSFallback). The CSFallback controller comprises a visited side signaling output to provide visited side signaling to respond to a mobile terminated call to an mobile handset supporting LTE by locating said handset and an MSC currently serving said handset, using an emulation of HLR signaling for locating the handset and the MSC and a home side signaling output, to provide home side signaling to an HLR associated with the handset. The home side signaling is an emulation of signaling from a serving MSC. The controller transfers the call for handling by the identified currently serving MSC.
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