Behavior for wireless transmit/receive unit and MAC control elements for LTE DRX operations

摘要

A wireless transmit/receive unit (WTRU) stops discontinuous reception (DRX) timers that are running and that are related to uplink and/or downlink transmissions during a DRX time period. The WTRU stops the DRX timers in response to receiving a medium access control (MAC) control element signal from an eNode-B.

主权项

1. A method for a wireless transmit receive unit (WTRU) to perform discontinuous reception (DRX), the method comprising:
the WTRU operating a DRX on duration timer, wherein the DRX on duration timer specifies a number of consecutive physical downlink control channel (PDCCH) subframes at a beginning of a DRX cycle; the WTRU operating a DRX inactivity timer, wherein the DRX inactivity timer is indicative of a number of consecutive transmission time intervals (TTIs) during which the WTRU monitors a PDCCH after successfully decoding a PDCCH transmission that indicates an initial uplink or downlink user data transmission for the WTRU; the WTRU receiving a DRX medium access control (MAC) control element (CE); the WTRU stopping the DRX on duration timer and the DRX inactivity timer based on receiving the DRX MAC CE; and upon receiving the DRX MAC CE and stopping the DRX on duration timer and the DRX inactivity timer, the WTRU determining whether or not a short DRX cycle is configured, wherein:
on condition that the WTRU determines that the short DRX cycle is configured, the WTRU starting a DRX short cycle timer and using the short DRX cycle, andon condition that the WTRU determines that the short DRX cycle is not configured, the WTRU using a long DRX cycle.