Dealing with network changes in cellular fingerprint positioning systems
Besides being a fundamental infrastructure for communication, cellular networks are exploited for positioning through signal fingerprinting. Maintaining the fingerprint database consistent and up-to-date is a challenging task in many fingerprint positioning systems, e.g., in those populated by a crowd-sourcing effort. To this end, detecting and tracking the changes in the configurations of cellular networks over time is recognized as a relevant problem. In this paper, we show that to cope with this problem we can successfully exploit information provided by Timing Advance (TA). As a by-product, we prove that TA can improve the fingerprint candidate selection phase, reducing the number of fingerprints to provide as input to positioning algorithms. The effectiveness of the proposed improvements has been tested on a fingerprint positioning system with a large fingerprint dataset collected over a period of 2 years.
2017
2017-06-22 12:39:57
1033
fingerprint positioning systems, cellular communication networks, network changes
r6
Andrea
Viel
70
Paolo
Gallo
70
Angelo
Montanari
70
Donatella
Gubiani
70
Andrea
Dalla Torre
70
Federico
Pittino
70
Chris
Marshall
70
COBISS_ID
3
5167355
DOI
15
10.1109/ICL-GNSS.2017.8376255
NUK URN
18
URN:SI:UNG:REP:KGGJ7ERF
iclgnss2017.pdf
4866885
Predstavitvena datoteka
2017-06-22 12:41:17