Apparatus and method for calculating location of mobile station in wireless network

A user equipment (UE) for calculating a position of the UE located in an indoor, the UE comprising:

• a communications device;
• and
• a processor operatively connected to the communication device and configured to:
• transmit, to an access point (AP), measurement information including an intensity of a signal received from the AP and feedback information including inertial sensor information of the UE;
• receive, from the AP, an estimated position of the UE and compensation factor information for inertial sensor correction, the compensation factor information including a period of ensuring reliability of inertial sensor measurement values and a predetermined compensation value corresponding to the inertial sensor information of the UE;
• calculate a position of the UE using the inertial sensor during a specific time period;
• if the specific time period is shorter than the period of ensuring reliability of inertial sensor measurement values, calculate an indoor position of the UE using the estimated position of the UE and the predetermined compensation value and the position calculated by the inertial sensor;
• and
• if the specific time period is longer than the period of ensuring reliability of inertial sensor measurement values, resetting the inertial sensor.