Designing a High-Accuracy, High-Coverage Carrier-Independent Location Solution
Jul 11, 2012
There are many network-based and handset-based location technologies available today. However, most of them suffer from either accuracy or coverage limitations. For example, Assisted Global Positioning System (A-GPS) only works in open sky conditions where there is line-of-sight to satellites, and does not provide high-accuracy location in dense urban and indoor scenarios. Many network-based technologies are able to provide high accuracy and global coverage, and are often used in hybrid with handset-based methods to provide the most comprehensive solution, as shown in figure 1.