Invention Grant
US08526391B2 Network based location of mobile transmitters 失效
移动发射机的基于网络的位置

Network based location of mobile transmitters
Abstract:
In an LTE environment, the sensitivity of wireless location system receivers to narrowband transmissions, and the resolution of the receivers to wideband transmissions, may be improved by using tailored uplink transmission parameters, thereby increasing location accuracy and decreasing latency in developing a location. A first method for increasing TDOA performance allows LMU receivers to integrate TDOA and/or AOA measurements over longer periods of time, and thus achieve higher sensitivity. This method employs the Semi-Persistent-Scheduling (SPS) feature of the LTE communications system. A second method for increasing TDOA performance allows LMUs to collect signals over a broader bandwidth, and thus achieve higher resolution. This method uses the Sounding Reference Signal (SRS) feature of the LTE system. Using both the SPS and SRS functions for U-TDOA locations provides the benefit of increased sensitivity and greater resolution, thereby providing the potential for significantly improved location performance.
Public/Granted literature
Information query
Patent Agency Ranking
0/0