Communications protocol for RF-based indoor wireless localization systems

2006 ◽  
Author(s):  
Tamas Kasza ◽  
Mehdi M. Shahsavari ◽  
Veton Kepuska ◽  
Maria Pinzone
Keyword(s):  
Wireless Localization ◽  
Indoor Wireless ◽  
Communications Protocol ◽  
Localization Systems

scholarly journals Robust Floor Determination Algorithm for Indoor Wireless Localization Systems under Reference Node Failure

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Kriangkrai Maneerat ◽  
Kamol Kaemarungsi ◽  
Chutima Prommak
Keyword(s):  
Ieee 802.15.4 ◽  
Wireless Sensor ◽  
Wireless Localization ◽  
Positioning Systems ◽  
Reference Node ◽  
Mobile Objects ◽  
Location Fingerprinting ◽  
Indoor Wireless ◽  
The Mean ◽  
Localization Systems

One of the challenging problems for indoor wireless multifloor positioning systems is the presence of reference node (RN) failures, which cause the values of received signal strength (RSS) to be missed during the online positioning phase of the location fingerprinting technique. This leads to performance degradation in terms of floor accuracy, which in turn affects other localization procedures. This paper presents a robust floor determination algorithm called Robust Mean of Sum-RSS (RMoS), which can accurately determine the floor on which mobile objects are located and can work under either the fault-free scenario or the RN-failure scenarios. The proposed fault tolerance floor algorithm is based on the mean of the summation of the strongest RSSs obtained from the IEEE 802.15.4 Wireless Sensor Networks (WSNs) during the online phase. The performance of the proposed algorithm is compared with those of different floor determination algorithms in literature. The experimental results show that the proposed robust floor determination algorithm outperformed the other floor algorithms and can achieve the highest percentage of floor determination accuracy in all scenarios tested. Specifically, the proposed algorithm can achieve greater than 95% correct floor determination under the scenario in which 40% of RNs failed.

scholarly journals Optimal Power Allocation for Jammer Nodes in Wireless Localization Systems

2017 ◽  
Vol 65 (24) ◽  
pp. 6489-6504 ◽  
Author(s):  
Suat Bayram ◽  
Musa Furkan Keskin ◽  
Sinan Gezici ◽  
Orhan Arikan
Keyword(s):  
Power Allocation ◽  
Optimal Power Allocation ◽  
Wireless Localization ◽  
Optimal Power ◽  
Localization Systems

Improving Ultra-Wideband Positioning Security Using a Pseudo-Random Turnaround Delay Protocol

2015 ◽  
Vol 24 (10) ◽  
pp. 1550149
Author(s):  
Xue-Rong Cui ◽  
Juan Li ◽  
Hao Zhang ◽  
T. Aaron Gulliver ◽  
Chunlei Wu
Keyword(s):  
Data Exchange ◽  
Ieee 802.15.4 ◽  
Ultra Wideband ◽  
Wireless Localization ◽  
Data Link ◽  
Position Information ◽  
Location Services ◽  
Network Layers ◽  
Authentication Mechanism ◽  
Indoor Wireless

Ultra-wideband (UWB) technology is very suitable for indoor wireless localization and ranging. IEEE 802.15.4a is the first physical layer standard specifically developed for wireless ranging and positioning. While malicious devices are not typically present, snoopers, impostors and jammers can exist. The data link and network layers in standards such as Wi-Fi, IEEE 802.15.4 and 802.11 mainly provide authentication and encryption support, but security about ranging or location is rarely considered. Ranging can be achieved using just the preamble and start of frame delimiter (SFD), so in this case malicious devices can easily obtain position information. Therefore, the security of ranging or positioning protocols is very important, which differs from the case with data exchange protocols. To provide secure location services, a protocol is presented which is based on a pseudo-random turnaround delay. In this protocol, devices use different turnaround times so that it is difficult for a snooper to figure out the location of sensor devices in protected areas. At the same time, in the period of Hello frame transmission, together with the authentication mechanism of IEEE 802.15.4, an impostor cannot easily engages its deception attack.

scholarly journals Jamming of Wireless Localization Systems

2016 ◽  
Vol 64 (6) ◽  
pp. 2660-2676 ◽  
Author(s):  
Sinan Gezici ◽  
Mohammad Reza Gholami ◽  
Suat Bayram ◽  
Magnus Jansson
Keyword(s):  
Wireless Localization ◽  
Localization Systems
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