METHOD AND SYSTEM FOR MINIMIZING POWER CONSUMPTION OF USER EQUIPMENT DURING CELL DETECTION

摘要

A method and system for minimizing battery power consumption of user equipment (UE) during inter-frequency cell discovery in heterogeneous network is disclosed. UE receives background scan configuration for specified frequency from the network and performs the background scan for detecting inter-frequency cell. The UE detects an inter-frequency cell on the frequency indicated in the background scan configuration, during the inactive time of DRX cycle. Further, UE indicates the physical cell identity of the detected cell to the network. Then the UE activates the normal measurement gap provided previously or the network configures normal measurement gap to the UE if not provided previously. Further, UE performs Reference signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ) measurements of the detected cell. Then the UE reports these measurements to the network when the measurement report event condition is satisfied and the network handovers the UE to the detected cell.

主权项

1. A network for reducing battery power consumption of user equipment (UE) in a radio resource control (RRC) connected mode during inter-frequency cell detection in a heterogeneous network, the network comprising:
a memory; and a controller configured to: determine to send background scan configuration to said UE based on cell density; provide said background scan configuration for at least one configured frequency for said UE to initiate a cell search on said at least one configured frequency during inactive time of discontinuous reception (DRX) cycle, wherein said at least one configured frequency is a frequency other than a serving frequency; receive a physical cell identity (PCI) of at least one detected cell from said UE on said at least one configured frequency configured for background scan; reconfigure said UE with a normal measurement gap if not provided previously in a measurement configuration; send a measurement report event condition for said at least one configured frequency, upon receiving the PCI of the at least one detected cell by said UE on said at least one configured frequency configured for background scan; and perform a handover of said UE to said at least one detected cell on said at least one configured frequency based on satisfaction of the measurement report event condition.