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Resuming packet services in a mobile network

  • US 9,750,017 B2
  • Filed: 01/07/2016
  • Issued: 08/29/2017
  • Est. Priority Date: 06/28/2013
  • Status: Active Grant
First Claim
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1. A user equipment (UE) configured for inter-RAT mobility, the UE comprising:

  • a transceiver coupled to a processor, the transceiver and processor, configured to;

    receive signaling to activate idle mode signal reduction (1SR) for subsequent use during inter-RAT cell re-selection while the UE is in idle mode;

    perform inter-RAT cell reselection in accordance with ISR when ISR is activated, the inter-RAT cell reselection to establish a circuit-switched (CS) radio signaling connection within a target cell when the target cell is a non-E-UTRAN cell;

    transmit signaling to suspend packet switched (PS) services while the UE has a signaling connection within a non-E-UTRAN cell;

    transmit signaling to initiate a tracking area update (TAU) procedure when ISR is activated to resume PS services when the UE returns to a E-UTRAN cell; and

    based on an unsuccessful resumption of PS services, deactivate ISR after returning to the E-UTRAN cell prior to initiating another TAU procedure to resume PS services.

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