Method and Apparatus for User Equipment Registration Updates Triggered by a Tracking Area Change
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United States of America Patent
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Issued Date -
Oct 29, 2009
app pub date -
Apr 28, 2009
filing date -
Apr 29, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Some embodiments provide a method for updating registration information of a user equipment (UE) in a communication system that includes several evolved Universal Mobile Telecommunication System (UMTS) Terrestrial Radio Access Network (E-UTRANs) that communicatively couple the UE to a Voice over long term evolution (LTE) via Generic Access (VoLGA) network controller (VANC). The method receives a message at the UE from the VANC including a list of E-UTRAN tracking areas (TAs) served by the VANC, each tracking area identified by a tracking area identifier (TAI). The method stores the list of E-UTRAN tracking areas at the UE. The method sends a register update message that includes a TAI of a particular E-UTRAN tracking area from the UE to the VANC when the UE moves into the particular E-UTRAN tracking area and the particular E-UTRAN TAI is not in the list of E-UTRAN tracking areas (TAs) served by the VANC.
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