| 摘要 |
PROBLEM TO BE SOLVED: To estimate a position with high precision by providing the communication terminal of a moving communication system having the base zone of a small zone for the moving station of a moving communication system having the base zone of a large zone and estimating the position of the moving station by means of grasping the base zone of the small zone. SOLUTION: When a key input part 65 executes the position information request operation of the moving station 5, a control part 64 generates a position information request signal and gives an instruction on the generation of the position information request signal of the moving station 5 to a signal processing part 61 based on the signal. The signal processing part 61 generates the position information request signal, adds the code of the moving station 5 being a transmission destination and outputs it to a frequency conversion processing part 63. The frequency conversion processing part 63 converts the modulation wave of the position information request signal into the radio frequency of the first moving communication system and transmits it. The moving station 5 previously establishes a link with the base station 1 of the first moving communication system. A base station 1-side can grasp in which base zone of the base station 1 it is positioned through the communication network. |
