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US 2017/0318533 A1Published application
Implicit DRX Cycle Length Adjustment Control in LTE_Active Mode
AssigneeInterDigital Technology Corporation
InventorsStephen E. Terry, Peter S. Wang, Jin Wang
Life of this patent
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Abstract
A method for controlling discontinuous reception in a wireless transmit/receive unit includes defining a plurality of DRX levels, wherein each DRX level includes a respective DRX cycle length and transitioning between DRX levels based on a set of criteria. The transitioning may be triggered by implicit rules.
Claims18
A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
- the WTRU receiving a discontinuous reception (DRX) configuration in a radio resource control (RRC) message, the DRX configuration comprising a first DRX cycle length, a second DRX cycle length, and a value for a WTRU timer used to trigger a transition from the first DRX cycle length to the second DRX cycle length, wherein the second DRX cycle length is a multiple of the first DRX cycle length;
- the WTRU performing DRX using the second DRX cycle length;
- the WTRU receiving a trigger from a base station;
- the WTRU performing DRX using the first DRX cycle length based on receiving the trigger;
- the WTRU starting the WTRU timer upon beginning DRX operation using the first DRX cycle length;
- the WTRU determining that the WTRU timer has expired;
- and
- the WTRU transitioning from the first DRX cycle length to the second DRX cycle length in response to the WTRU determining that the WTRU timer has expired.
5 more elements
A wireless transmit/receive unit (WTRU) comprising a processor and memory configured to:
- receive a discontinuous reception (DRX) configuration in a radio resource control (RRC) message, the DRX configuration comprising a first DRX cycle length, a second DRX cycle length, and a value for a WTRU timer used to trigger a transition from the first DRX cycle length to the second DRX cycle length;
- perform DRX using the second DRX cycle length;
- receive a trigger from a base station;
- perform DRX using the first DRX cycle length based on receiving the trigger;
- start the WTRU timer upon beginning DRX operation using the first DRX cycle length;
- determine that the WTRU timer has expired;
- and
- transition from the first DRX cycle length to the second DRX cycle length in response to the expiration of the WTRU timer.
5 more elements
A wireless transmit/receive unit (WTRU) comprising a processor and memory configured to:
- receive a discontinuous reception (DRX) configuration in a radio resource control (RRC) message, the DRX configuration comprising a first DRX cycle length, a second DRX cycle length, and a value for a WTRU timer used to trigger a transition from the first DRX cycle length to the second DRX cycle length;
- perform DRX using the second DRX cycle length;
- receive a command from a base station;
- perform DRX using the first DRX cycle length based on receiving the trigger;
- start the WTRU timer upon beginning DRX operation using the first DRX cycle length;
- determine that the WTRU timer has expired;
- and
- transition from the first DRX cycle length to the second DRX cycle length in response to the expiration of the WTRU timer.
5 more elements
Dependencies are inferred from the claim text.