A Measurement Study of Zigbee-based Indoor Localization Systems Under RF Interference
Journal
4th ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization (WiNTECH 2009)
Pages
35-42
Date Issued
2009-09
Author(s)
Abstract
With an expected market value of 2.71 billion in 2016, supporting daily use of real-time location systems in households and commercial buildings is an increasingly important subject of study. A growing problem in providing robust indoor location estimations in real time is the use of wireless transmissions in RF frequencies. Having implemented a simple RSSI-signature-based location system on a 24-node IEEE 802.15.4-based sensor network testbed, we are able to analyze the effect of background IEEE 802.11 traffic on localization error. The measurement results demonstrate that the 80th-percentile of the localization error may increase by 141% at worst in an office building with active use of IEEE 802.11 for data. Such performance degradation results from RSSI reading loss as the beacon messages collide with background traffic.
With an expected market value of 2.71 billion in 2016, supporting daily use of real-time location systems in households and commercial buildings is an increasingly important subject of study. A growing problem in providing robust indoor location estimations in real time is the use of wireless transmissions in RF frequencies. Having implemented a simple RSSI-signature-based location system on a 24-node IEEE 802.15.4-based sensor network testbed, we are able to analyze the effect of background IEEE 802.11 traffic on localization error. The measurement results demonstrate that the 80th-percentile of the localization error may increase by 141% at worst in an office building with active use of IEEE 802.11 for data. Such performance degradation results from RSSI reading loss as the beacon messages collide with background traffic.
SDGs
Type
conference paper