Back to results
US 12,004,080 B2Granted
DRX cycle length adjustment control
AssigneeInterDigital Technology Corporation
InventorsStephen E. Terry, Peter S. Wang, Jin Wang
Life of this patent
Estimating the term…
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.
Claims20
A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
- receiving discontinuous reception (DRX) configuration parameters, the DRX configuration parameters comprising an indication of a first DRX cycle length, an indication of a second DRX cycle length, an indication of a first timer length, and an indication of a second timer length;
- setting a first timer at the first timer length;
- determining that the first timer has expired;
- performing DRX using the first DRX cycle length based on determining that the first timer has expired;
- setting a second timer at the second timer length based on beginning DRX operation at the first DRX cycle length;
- determining that the second timer has expired;
- and
- performing DRX using the second DRX cycle length based on determining the second timer has expired, wherein the second DRX cycle length is a multiple of the first DRX cycle length.
5 more elements
A wireless transmit/receive unit (WTRU) comprising a processor and memory, the processor and memory configured to:
- receive discontinuous reception (DRX) configuration parameters, the DRX configuration parameters comprising an indication of a first DRX cycle length, an indication of a second DRX cycle length, an indication of a first timer length, and an indication of a second timer length;
- set a first timer at the first timer length;
- determine that the first timer has expired;
- perform DRX using the first DRX cycle length based on determining that the first timer has expired;
- set a second timer at the second timer length based on beginning DRX operation at the first DRX cycle length;
- determine that the second timer has expired;
- and
- perform DRX using the second DRX cycle length based on determining the second timer has expired, wherein the second DRX cycle length is a multiple of the first DRX cycle length.
5 more elements
A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
- receiving discontinuous reception (DRX) configuration parameters from a base station, wherein the DRX configuration parameters comprise an indication of a first DRX cycle length, an indication of a second DRX cycle length, and a value for a first WTRU timer used for implicitly transitioning the WTRU between DRX cycle lengths;
- operating the WTRU at the first DRX cycle length;
- using a second WTRU timer to trigger a transition to the second DRX cycle length;
- operating the WTRU at the second DRX cycle length, wherein the first DRX cycle length is a multiple of the second DRX cycle length;
- setting the first WTRU timer upon beginning operation at the second WTRU cycle length;
- determining that the first WTRU timer has expired;
- and
- responsive to determining that the first WTRU timer has expired, transitioning to the first DRX cycle length without receiving explicit signaling from the base station.
5 more elements
A wireless transmit/receive unit (WTRU) comprising a processor configured to:
- receive discontinuous reception (DRX) configuration parameters from a base station, wherein the DRX configuration parameters comprise an indication of a first DRX cycle length, an indication of a second DRX cycle length, and a value for a first WTRU timer used for implicitly transitioning the WTRU between DRX cycle lengths;
- operate the WTRU at the first DRX cycle length;
- use a second WTRU timer to trigger a transition to the second DRX cycle length;
- operate the WTRU at the second DRX cycle length, wherein the first DRX cycle length is a multiple of the second DRX cycle length;
- set the first WTRU timer upon beginning operation at the second WTRU cycle length;
- determining that the first WTRU timer has expired;
- and
- responsive to determining that the first WTRU timer has expired, transition the WTRU to the first DRX cycle length without receiving explicit signaling from the base station.
5 more elements
Dependencies are inferred from the claim text.