Telefonaktiebolaget LM Ericsson (publ)
Wake-Up Monitoring for Discontinuous Reception Mode in a Wireless Communication System

Abstract:

A user equipment (14) is configured to operate in a connected discontinuous reception, C-DRX, mode. The user equipment (14) is configured to receive a DRX radio network temporary identifier, DRX-RNTI, (22) and/or receive configuration parameters for C-DRX mode that configure the user equipment (14) with a C-DRX cycle including an on-duration period and an off-duration period. The user equipment (14) is configured to operate in a sleep state during the off-duration period. The user equipment (14) is configured to, responsive to receiving a message (26) during a wake-up monitoring period (24), attempt to decode the message (26) using the DRX-RNTI (22). The user equipment (14) is configured to monitor a Physical Downlink Control Channel during the on-duration period of a C-DRX cycle or operate in the sleep state during the on-duration period, depending respectively on whether or not the attempt to decode the message (26) using the DRX-RNTI (22) succeeds.