PROBLEM TO BE SOLVED: To provide a terminal position determination system which allows for determination of the position, in a portable terminal performing short-range wireless communication.SOLUTION: A portable terminal 2 includes a hopping function (AFH function) for avoiding interference with other signals. A vehicle 1 transmits a direct spread simulation signal Sds-1 from a simulation signal transmission antenna 20, and forms a communication area of the simulation signal Sds-1 in the vehicle. A position determination unit 23 determines that the portable terminal 2 is located in the area of the simulation signal Sds-1 (e.g., in the vehicle), when the AFH function has been turned on by receiving the simulation signal Sds-1, and determines that the portable terminal 2 is located on the outside of the area of the simulation signal Sds-1 (e.g., on the outside of the vehicle), when the simulation signal Sds-1 has not been received and the AFH function has been turned off.
【課題】近距離無線により通信を実行する携帯端末において位置を判定することができる端末位置判定システムを提供する。【解決手段】携帯端末2は、他の信号との干渉を回避するためにホッピング機能(AFH機能)を備える。車両1は、模擬信号送信アンテナ20から直接拡散の模擬信号Sds−1を送信して、車内に模擬信号Sds−1の通信エリアを形成する。位置判定部23は、模擬信号Sds−1の受信に伴いAFH機能がオンとなっているとき、携帯端末2が模擬信号Sds−1のエリア内(例えば車内)に位置すると判定し、模擬信号Sds−1を受信しておらずAFH機能がオフとなっているとき、携帯端末2が模擬信号Sds−1のエリア外(例えば車外)に位置すると判定する。【選択図】図1
TERMINAL POSITION DETERMINATION SYSTEM
端末位置判定システム
2015-10-01
Patent
Electronic Resource
Japanese
PORTABLE TERMINAL AND PARKING POSITION DETERMINATION SYSTEM
European Patent Office | 2023
|TERMINAL POSITION DETECTION SYSTEM AND TERMINAL POSITION DETECTION METHOD
European Patent Office | 2020
|European Patent Office | 2018
|