Patent ID: 9693335
Date: 2017-06-27
CPC Classifications: H04W

Claim:
1. A radio base station comprising: a transmitter that transmits, to a radio terminal being connected to the radio base station, a capability information transmission request for requesting a transmission of terminal capability information indicating a positioning capability of the radio terminal, wherein the terminal capability information indicates whether the radio terminal has a positioning system capable of acquiring location information without an assist from a network; a receiver that receives the terminal capability information transmitted from the radio terminal; and a determination unit that determines whether or not location information indicating a geographical location of the radio terminal is acquirable during an idle state of the radio terminal, based on the terminal capability information received by the receiver, wherein based on a result of the determination, the transmitter further transmits Minimization of Drive Tests (MDT) configuration information to the radio terminal and then transmits a request different from the MDT configuration information to the radio terminal, the MDT configuration information relating to MDT measurement for radio qualities and location information, the request requesting transmission of MDT measurement results of the radio qualities and the location information, wherein the MDT measurement includes periodic measurement for the radio qualities, the radio qualities including first radio quality of a serving cell and second radio quality of other cells, and each of the first and second radio qualities including Reference Signal Received Power (RSRP) and/or Reference Signal Received Quality (RSRQ), and the receiver further receives the MDT measurement results from the radio terminal, wherein the MDT measurement results are obtained by the radio terminal during the idle state of the radio terminal.