Accuracy of random walk and Markovian mobility models in location prediction methods

Abstract

Recent wireless networks offer more bandwidth than ever. High quality services are develfoped and provided by the operators, the number of users is constantly increasing. As the transferred data and the number of terminals are growing, the network providers have to face the increasing complexity of the network management and operation tasks. In this paper we observe the estimation and prediction of users' distribution in a cellular network. We compare the accuracy of mobility models serving for location prediction with our enhanced user motion prediction algorithm.

Performance Analysis of Indoor Communication System Using Off-the-Shelf LEDs With Human Blockages

“…8(a) that average received power is decreasing with an increase in blockage density for both MHCP and RWP. The average received power with RWP performs slightly better than the MHCP because in the RWP model using (19), the user probability of being in the center is more than in edges or anywhere in the room, which results in a less number of LEDs getting blocked in a rectangular configuration. Further, the average received power with the RWP model is continuously decreasing for higher blockage density, while for MHCP, the average power gets saturated for higher blockage density due to the stationary behavior of the MHCP.…”

“…Further, to track the behavior of the mobile users, it is essential to use a mobility model such as random walk [19], Markovian models [20], Levy walk [21], and models based on product-form queuing networks [22], [23]. Amongst different models, the RWP is widely used, and hence is thoroughly studied [16].…”

“…where P ti is the transmit power at the i th LED, x i is the corresponding modulating OOK signal and M I is the modulating index [34]. Here, the first term (P ti ) in (19) takes care of illumination while the second term (P ti M I x i ) is for communication. After photo-detection, assuming that the DC component of the detected electrical signal is filtered out at the receiver, the received signal at photo-detector j is given by…”