Discontinuous reception (DRX) enhancements in LTE systems
First Claim
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1. An apparatus of a user equipment (UE), the apparatus comprising:
- processing circuitry in communication with a memory and arranged to;
decode, from an evolved NodeB (eNB), a Radio Resource Control (RRC) message dependent on a RRC mode of the apparatus, the RRC message comprising a RadioResourceConfigDedicated information element (IE), the RadioResourceConfigDedicated IE comprising a MAC-MainConfig IE, the MAC-MainConfig IE comprising a discontinuous reception (DRX) configuration IE, the DRX configuration IE 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, anda long DRX cycle start offset that provides a timing to enable transmission of a Hybrid Automatic Repeat Request (HARD) for a Time Division Duplexing (TDD) configuration 0; and
monitor, based on the timers in the DRX configuration IE, PDCCHs for a control signal that indicates transmission of user data for the UE, wherein the memory is configured to store the plurality of timers and the long DRX cycle start offset.
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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.
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Citations
20 Claims
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1. An apparatus of a user equipment (UE), the apparatus comprising:
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processing circuitry in communication with a memory and arranged to; decode, from an evolved NodeB (eNB), a Radio Resource Control (RRC) message dependent on a RRC mode of the apparatus, the RRC message comprising a RadioResourceConfigDedicated information element (IE), the RadioResourceConfigDedicated IE comprising a MAC-MainConfig IE, the MAC-MainConfig IE comprising a discontinuous reception (DRX) configuration IE, the DRX configuration IE 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, anda long DRX cycle start offset that provides a timing to enable transmission of a Hybrid Automatic Repeat Request (HARD) for a Time Division Duplexing (TDD) configuration 0; and monitor, based on the timers in the DRX configuration IE, PDCCHs for a control signal that indicates transmission of user data for the UE, wherein the memory is configured to store the plurality of timers and the long DRX cycle start offset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus of an evolved NodeB (eNB), the apparatus comprising:
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a memory; and processing circuitry in communication with the memory and arranged to; generate, for transmission to a user equipment (UE), a Radio Resource Control (RRC) Connection Setup message when the UE is in RRC Idle Mode or a RRC Connection Reconfiguration message when the UE is in RRC Connected Mode, the RRC Connection Setup or Reconfiguration message comprising a RadioResourceConfigDedicated information element (IE), the RadioResourceConfigDedicated IE comprising; a MAC-MainConfig IE, the MAC-MainConfig IE comprising a discontinuous reception (DRX) configuration IE, the DRX configuration IE 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, a long DRX cycle start offset that provides a timing to enable transmission of a Hybrid Automatic Repeat Request (HARD) for a Time Division Duplexing (TDD) configuration 0, and a short DRX cycle timer that specifies a number of consecutive subframes that the UE is to follow a short DRX cycle; and generate, for transmission to the UE based on the DRX configuration IE, a control signal that indicates data for the UE, the control signal in a PDCCH of the short DRX cycle or a subsequent long DRX cycle. - View Dependent Claims (12, 13, 14)
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15. A non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of a user equipment (UE) to communicate with an evolved NodeB (eNB), the one or more processors to configure the UE to:
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receive, from an evolved NodeB (eNB), a Radio Resource Control (RRC) message dependent on a RRC mode of the UE, the RRC message comprising a RadioResourceConfigDedicated information element (IE), the RadioResourceConfigDedicated IE comprising a MAC-MainConfig IE, the MAC-MainConfig IE comprising a discontinuous reception (DRX) configuration IE, the DRX configuration IE 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, anda long DRX cycle start offset that provides a timing to enable transmission of a Hybrid Automatic Repeat Request (HARD) for a Time Division Duplexing (TDD) configuration 0; and monitor, based on the timers in the DRX configuration IE, PDCCHs for a control signal that indicates transmission of user data for the UE. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification