Systems and Methods to Receive CSI-RS/TRS Indication by Idle/Inactive Mode UEs for Improved Paging Reception

A wireless device comprising:

• an antenna;
• a radio operably coupled to the antenna;
• and
• a processor operably coupled to the radio;
• wherein the wireless device is configured to:
• receive, in a reduced power state, resource information for receiving a channel state information reference signal (CSI-RS) and tracking reference signal (TRS);
• exit the reduced power state to receive the CSI-RS and TRS, based on the resource information;
• synchronize with a base station, based on the received CSI-RS and TRS, to receive a downlink control information message;
• receive paging information in a first physical downlink shared channel (PDSCH) transmission based on the received downlink control information message;
• determine whether there is paging information in the first PDSCH transmission for the wireless device;
• start a Random Access Channel (RACH) procedure to make a Radio Resource Control (RRC) connection to the base station, based on a determination that there is paging information for the wireless device;
• and
• return to the reduced power state, based on a determination that there is not paging information for the wireless device.

An integrated circuit, comprising circuitry configured to:

• cause a wireless device to receive, in a reduced power state, resource information for receiving a channel state information reference signal (CSI-RS) and tracking reference signal (TRS);
• cause the wireless device to exit the reduced power state to receive the CSI-RS and TRS, based on the resource information;
• cause the wireless device to synchronize with a base station, based on the received CSI-RS and TRS, to receive a downlink control information message;
• cause the wireless device to receive paging information in a first physical downlink shared channel (PDSCH) transmission based on the received downlink control information message;
• determine whether there is paging information in the first PDSCH transmission for the wireless device;
• cause the wireless device to start a Random Access Channel (RACH) procedure to make a Radio Resource Control (RRC) connection to the base station, based on a determination that there is paging information for the wireless device;
• and
• cause the wireless device to return to the reduced power state, based on a determination that there is not paging information for the wireless device.