Enhanced Mechanism to Access the Network for Mobile Terminal
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United States of America Patent
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Issued Date -
Jul 14, 2016
app pub date -
May 18, 2015
filing date -
May 16, 2014
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
In order to optimize UE power consumption, the embodiments of present invention adopt the Power Saving Mode (PSM) solution. In NAS layer, an active timer is defined for PSM. UE starts the active timer when it transits from CONNECTED to IDLE. When the active timer expires, UE transits from IDLE to PSM. UEresumes IDLE before the periodic TAU timer expires. During PSM, the UE may resume IDLE any timer, e.g., for mobile originating communication. A new mechanism to access the network for the UE is proposed in this invention. This mechanism defines the UE behaviors when it transits from PSM to IDLE and to establish RRC connection. First of all, UE performs cell selection/reselection by considering the previous serving cell. Then the access barring timer is controlled by comparing the current and the previous serving cell. The RRC connection is established based on the status of access barring timer.
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