Fig. 7
From: Trajectory estimation based on mobile network operator data for cellular network simulations
Estimating session initiation and termination. Two scenarios for estimating the start and end position of a packet data session. The left scenario (a) shows a trajectory consisting of two location area updates and three consecutive handover events, the second one (b) outlines a special case with just one handover event. In both cases, the green segments represent the range where we assume the session to start or end, the actual position derived from a uniformly distributed Gaussian random variable is highlighted in red color, respectively