Discontinuous reception (DRX) enhancements in LTE systems
AssigneeApple Inc.
InventorsYoun Hyoung Heo, Yujian Zhang, Jong-Kae Fwu
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Abstract
Embodiments of a system and method for providing DRX enhancements in LTE systems are generally described herein. In some embodiments, a system control module is provided for controlling communications via a communications interface. A processor is coupled to the system control module and is arranged to implement an inactivity timer and an on-duration timer for determining an active time for monitoring subframes on the physical downlink control channel for control signals, the processor further monitoring subframes after the active time.
Claims19
An apparatus for a user equipment (UE), the apparatus comprising:
- a memory to store values of a plurality of timers;
- and
- one or more processors configured to:
- decode, from a base station, a Radio Resource Control (RRC) message comprising a discontinuous reception (DRX) configuration, the DRX configuration comprising:
- the plurality of timers that indicate timing for the UE to monitor for a physical downlink control channel (PDCCH), timing before the UE enters an idle state, and timing for downlink retransmission, and
- a long DRX cycle start offset that provides a timing to enable transmission of a Hybrid Automatic Repeat Request (HARQ) for Time Division Duplexing (TDD), wherein the long DRX cycle start offset is 70 ms;
- and
- monitor, based on the timers in the DRX configuration, PDCCHs for a control signal that indicates transmission of user data for the UE.
A method for a user equipment (UE) to communicate with a base station, the method comprising:
- receiving, from the base station, a Radio Resource Control (RRC) message comprising a discontinuous reception (DRX) configuration, the DRX configuration comprising:
- a plurality of timers that indicate timing for the UE to monitor for a physical downlink control channel (PDCCH), timing before the UE enters an idle state, and timing for downlink retransmission, and
- a long DRX cycle start offset that provides a timing to enable transmission of a Hybrid Automatic Repeat Request (HARQ) for Time Division Duplexing (TDD), wherein the long DRX cycle start offset is 70 ms;
- and
- monitoring, based on the timers in the DRX configuration, PDCCHs for a control signal that indicates transmission of user data for the UE.
A non-transitory computer-readable medium that stores instructions for execution by one or more processors of a user equipment (UE) to communicate with a base station, the one or more processors to configure the UE to:
- receive, from the base station, a Radio Resource Control (RRC) message comprising a discontinuous reception (DRX) configuration, the DRX configuration comprising:
- a plurality of timers that indicate timing for the UE to monitor for a physical downlink control channel (PDCCH), timing before the UE enters an idle state, and timing for downlink retransmission, and
- a long DRX cycle start offset that provides a timing to enable transmission of a Hybrid Automatic Repeat Request (HARQ) for Time Division Duplexing (TDD), wherein the long DRX cycle start offset is 70 ms;
- and
- monitor, based on the timers in the DRX configuration, PDCCHs for a control signal that indicates transmission of user data for the UE.
Dependencies are inferred from the claim text.