Implicit DRX cycle length adjustment control in LTE;ACTIVE mode
First Claim
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1. A method for controlling discontinuous reception (DRX) in a wireless transmit/receive unit (WTRU), the method comprising:
- the WTRU receiving a DRX configuration comprising a plurality of DRX cycle lengths;
the WTRU performing DRX using a shorter DRX cycle length of the plurality of DRX cycle lengths;
the WTRU setting a WTRU timer upon initiating DRX operation using the shorter DRX cycle length, wherein the WTRU timer is associated with a length of time during which the WTRU performs DRX using the shorter DRX cycle length prior to transitioning to a longer DRX cycle length of the plurality of DRX cycle lengths;
the WTRU determining that the WTRU timer has expired; and
the WTRU transitioning from DRX operation using the shorter DRX cycle length to DRX operation using the longer DRX cycle length in response to 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.
32 Citations
26 Claims
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1. A method for controlling discontinuous reception (DRX) in a wireless transmit/receive unit (WTRU), the method comprising:
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the WTRU receiving a DRX configuration comprising a plurality of DRX cycle lengths; the WTRU performing DRX using a shorter DRX cycle length of the plurality of DRX cycle lengths; the WTRU setting a WTRU timer upon initiating DRX operation using the shorter DRX cycle length, wherein the WTRU timer is associated with a length of time during which the WTRU performs DRX using the shorter DRX cycle length prior to transitioning to a longer DRX cycle length of the plurality of DRX cycle lengths; the WTRU determining that the WTRU timer has expired; and the WTRU transitioning from DRX operation using the shorter DRX cycle length to DRX operation using the longer DRX cycle length in response to determining that the WTRU timer has expired. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21, 23, 25)
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11. A wireless transmit receive unit (WTRU) comprising a processor, the processor configured to:
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receive a discontinuous reception (DRX) configuration comprising a plurality of DRX cycle lengths; perform DRX using a shorter DRX cycle length of the plurality of DRX cycle lengths; set a WTRU timer upon initiating DRX operation using the shorter DRX cycle length, wherein the WTRU timer is associated with a length of time during which the WTRU is configured to operate using the shorter DRX cycle length, and if no new transmissions have been received during the length of time the WTRU is configured to transition to a longer DRX cycle length of the plurality of DRX cycle lengths; determine that the WTRU timer has expired; and transition the WTRU from DRX operation using the shorter DRX cycle length to DRX operation using the longer DRX cycle length in response to determining that the WTRU timer has expired. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 22, 24, 26)
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19. An evolved Node B (eNB) comprising a processor configured to:
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send a discontinuous reception (DRX) configuration to a wireless transmit/receive unit (WTRU), the DRX configuration comprising a plurality of DRX cycle lengths; determine that the WTRU has initiated DRX operation using a shorter DRX cycle length of the plurality of DRX cycle lengths; set a base station timer upon determining that the WTRU has initiated DRX operation using the shorter DRX cycle length, the base station timer being synchronized with a WTRU timer used for DRX cycle length transitions at the WTRU and being associated with a length of time during which the WTRU performs DRX using the shorter DRX cycle length; determine that the base station timer has expired; and determine that the WTRU has transitioned from performing DRX using the shorter DRX cycle length to performing DRX using a longer DRX cycle length of the plurality of DRX cycle lengths in response to determining that the base station timer has expired. - View Dependent Claims (20)
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Specification