A non-transitory computer-readable medium (CRM) comprising instructions to, upon execution of the instructions by one or more processors of a user equipment (UE), cause the UE to perform operations, the operations comprising:
- entering a radio resource control (RRC) idle mode;
- measuring at least one cell of a set of cells in a sleep period, wherein the sleep period is indicated in a discontinuous reception (DRX) configuration message received from the base station;
- receiving a UE information request from the base station responsive to entering an RRC connected mode;
- and
- transmitting results of the measurement to the base station responsive to the UE information request.