Using drive tests for network optimization purposes is costly and causes also additional CO2 emissions, so it is desirable to develop automated solutions, including involving UEs in the field, in 3GPP to reduce the operator costs for network deployment and operation. The studies done as part of the study item phase have shown that it is beneficial to collect UE measurements to enable a more efficient network optimisation and it is feasible to use control plane solutions to acquire the information from devices. This information, together with information available in the radio access network can be used for Coverage Optimization purposes.
This TS provides an overview and overall description of the minimization of drive tests functionality.
This TS describes functions and procedures to support autonomous collection of UE measurements using Control Plane architecture for both UTRAN and E-UTRAN. Details of the signalling procedures for single-RAT operation are specified in the appropriate radio interface protocol specification.
Note: The focus in on conventional macro cellular network deployments. It is presently not envisioned that H(e)NB deployments and MBMS will be supported by the MDT functionality.