Some operators opted for triangulation technology, which determines the location of the handset by comparing the signals received by different base-stations.
一些运营商采用了三角定位技术，此技术通过比较不同基站接收的手机信号来确定手机所处位置。
2
Some operators opted for triangulation technology, which determines the location of the handset by comparing the signals received by different basestations.
一些运营商采用了三角定位技术，此技术通过比较不同基站接收的手机信号来确定手机所处的位置。
3
Location sensing, powered by GPS as well as Wi-Fi and triangulation, opens up new possibilities for mobile social networking and presence applications.