A method and apparatus for measurement reporting and event-triggered
periodic measurement reporting in an evolved universal terrestrial radio
access network (E-UTRAN) are disclosed. A wireless transmit/receive unit
(WTRU) monitors cell-specific reference signals from a serving cell and
neighbor cells to detect a reporting event defined for the E-UTRAN. Once
a reporting event is detected, the WTRU sends a measurement report to the
network. The measurement quantity may be a reference signal received
quality (RSRQ). After detection of the reporting event, the WTRU may send
event-triggered measurement reports periodically. The WTRU may send a
scheduling request to the network for the event-triggered periodic
measurement reports. The WTRU may send a termination indication if the
event-triggered periodic measurement reports are terminated before a
configured number of times. The WTRU may send an extension request if a
specified number of periodic reporting has been sent but more reports
still need to be sent.