Fig 1.
Architecture of conventional cellular networks.
Fig 2.
Analysis flow chart of base station selection algorithms in mobile cellular networks.
Fig 3.
Schematic diagram of TDOA positioning system.
Fig 4.
Coordinate arrangements of cellular base stations and the target location.
Fig 5.
Three kinds of layout in cellular networks.
(a) Parallelogram layout, (b) Right triangle layout, (c) Star layout. • Selected station, ○ Unselected station.
Fig 6.
Base station selection based on nearest neighbor.
(a) Relationship between target and main station, (b) Location of target triangle area based on slope and azimuth, (c) Possible optimal location base station, (d) Final result of base station selection. • Selected base station, ○ Unselected base station, ▲ Target location.
Fig 7.
Five BSs selection regional distribution.
Fig 8.
Comparison of positioning accuracy of different number of base stations.
Fig 9.
Comparison of Chan and Chan-ho with different delay difference error.
Fig 10.
Contour lines of GDOP in parallelogram layout.
Fig 11.
Contour lines of GDOP of four BSs using DBSS4.
Fig 12.
Contour lines of GDOP of five BSs using DBSS5.
Fig 13.
Contour line of GDOP in triangle layout.
Table 1.
Comparison of various indicators with different method.
Table 2.
A Table of mainly notation and abbreviation in this paper.