| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for transmitting a positioning frame and a positioning method at a mobile station device in a heterogeneous network system. <P>SOLUTION: A heterogeneous network system comprises base station devices, a communication quality improving device, and a mobile station device. The base station device transmits a transmission signal string including a position where the base station is placed and a subframe used for positioning. The communication quality improving device transmits a transmission signal string including a subframe whose electric power is adjusted by adjusting electric power between the subframe used for positioning included in the transmission signal string transmitted by the base station device and a subframe at the same time of day. The mobile station device receives a transmission signal string, identifies the subframe used for positioning included in the received signal string, and performs positioning based on the arrival time when the identified subframe arrived and the position where the base station is placed included in the received signal string. <P>COPYRIGHT: (C)2012,JPO&INPIT |
