A wireless location system in LTE networks

Abstract

Personal location technologies are becoming important with the rapid development of Mobile Internet services. In Long Term Evolution (LTE) networks, the key problem of user location technology is that different base stations need be synchronized. However, high precision synchronization among different base stations is difficult, especially in indoor environment. In this paper, a new wireless location system in LTE networks is proposed. It contains more than two antenna clusters. Each cluster gets time differences of Sounding Reference Signals (SRS) from different antennas. Then the location system collects those time differences and calculates the user's position. Furthermore, a new location algorithm is raised based on this location system. Finally, simulations are given to verify the efficiency of this algorithm.