Patent ID: 8577360
Filing Date: 2013-11-05
Classification: H04W

Abstract:
1. A method for a user equipment (UE) to report measurement information to a radio communications network, the UE performing the steps comprising: performing minimizing drive test (MDT) measurements for report to the radio communications network; detecting a failure to report MDT measurement information; in response to detecting the failure to report the MDT measurement information, storing unreported MDT measurement information; detecting a radio link failure; transmitting a connection reestablishment request message to the radio communications network; receiving a connection reestablishment message from the radio communications network responding to the transmitted connection reestablishment request message; in response to the connection reestablishment message, transmitting a connection reestablishment confirmation message to the radio communications network, wherein the connection reestablishment confirmation message includes an indication that stored unreported MDT measurement information is available for transmission; receiving an information request message from the radio communications network, wherein the information request message includes a report request indicator; detecting whether the report request indicator in the received information request message is set; and in response to detecting that the report request indicator is set, transmitting a radio link failure (RLF) message that also includes at least some of the stored unreported MDT measurement information to the radio communications network.