Patent ID: 9603184
Date: 2017-03-21
CPC Classifications: H04W,Y02D

Claim:
1. A method comprising: by a wireless device: establishing a Radio Resource Control (RRC) connection between the wireless device and a first network; tuning a radio away from the first network to listen to a channel on a second network, without releasing the RRC connection with the first network; tuning the radio from the second network back to the first network; after tuning the radio from the second network back to the first network, sending a scheduling request during an agreed-upon sleep phase of a connected mode discontinuous receive (C-DRX) configuration to the first network when the wireless device has no uplink data to send to the first network; waiting for a downlink transmission from the first network in response to the scheduling request by remaining awake for a first predefined period of time before returning to sleep; when the wireless device does not receive the downlink transmission by an end of the first predefined period of time: