APPARATUS, SYSTEMS AND METHODS FOR USER EQUIPMENT (UE) COVERAGE ENHANCEMENT LEVEL UPDATE COMBINED WITH AN ABSENT TIME THAT HAS GENERATED CLOCK DRIFT
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United States of America Patent
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Issued Date -
Mar 2, 2017
app pub date -
Sep 24, 2015
filing date -
Aug 26, 2015
priority date (Note) -
Abandoned
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Abstract
Apparatus, systems, and methods for updating the CE (Coverage Enhancement)-level of a User Terminal (UE) during an idle mode. While the UE is resynchronizing to a network after an absent time that has generated clock drift between the UE and the network, the UE evaluates the CE-level to determine that the CE-level has changed and, in response to determining that the CE-level has changed, determines a revised CE-level estimation. After the UE has re-synchronized, the UE updates the network with the revised CE-level estimation, which, in response to receiving the revised CE-level estimation, the network adjusts the CE-level of the UE based, at least in part, on the CE-level estimation. In specific embodiments, such updating of the network by the UE is achieved by using a TAU (Tracking Area Update) procedure that extend the request message with a CE-level estimation parameter provided by the UE (User Equipment)/mobile terminal.
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