Implicit DRX cycle length adjustment control in LTE_active mode
First Claim
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1. 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.
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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.
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Citations
20 Claims
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1. A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 19)
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7. A wireless transmit/receive unit (WTRU) comprising a processor and memory configured to:
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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, wherein the second DRX cycle length is a multiple of the first DRX cycle length. - View Dependent Claims (8, 9, 10, 11, 12, 20)
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13. A wireless transmit/receive unit (WTRU) comprising a processor and memory configured to:
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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; receive a first trigger from a base station, the first trigger indicating that the WTRU should perform DRX using the second DRX cycle length; perform DRX using the second DRX cycle length based on receiving the first trigger; receive a second trigger from the base station, the second trigger indicating that the WTRU should perform DRX using the first DRX cycle length; perform DRX using the first DRX cycle length based on receiving the second 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, wherein the second DRX cycle length is a multiple of the first DRX cycle length. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification