JSL: Joint time synchronization and localization design with stratification compensation in mobile underwater sensor networks

Li, Jun; Wang, Zhaohui; Zuba, Michael; Peng, Zheng; Cui, Jun-Hong; Zhou, Shengli

doi:10.1109/secon.2012.6275793

Cited by 33 publications

(21 citation statements)

References 19 publications

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“…Furthermore, sending nodes know the initial distance from the sink node d i by many existing localization algorithms such as [14,15] and corresponding propagation delay τ i , where τ i = d i /v, with v the sound speed in underwater.…”

Section: Pc-mac: a Prescheduling And Collision-avoided Mac Protocolmentioning

confidence: 99%

PC-MAC: A Prescheduling and Collision-Avoided MAC Protocol for Underwater Acoustic Sensor Networks

Jin¹,

Xiao²,

Su³

2017

Journal of Sensors

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The impact of the acoustic modem with long preamble characteristic on the collision feature of the media access control scheme in underwater acoustic sensor networks (UANs) is evaluated. It is observed that the collision probability is relatively high due to the extremely long duration of preamble. As a result, UANs generally have much lower network throughput. To address this problem, a prescheduling MAC protocol named PC-MAC for UANs is proposed, which leverages a novel prescheduling scheme for the exchange of control packet to alleviate the collision probability among control packets. PC-MAC is a reservation-based channel access scheme. In the proposed protocol, an extra guard time is introduced to avoid the influence of dynamic spatial-temporal uncertainty of the sender and receiver positions. Simulation results show that PC-MAC outperforms classic reservation-based MAC protocol named SFAMA in terms of network goodput and end-to-end delay and lowers collision probability among control packets in two representative network scenarios.

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Section: Pc-mac: a Prescheduling And Collision-avoided Mac Protocolmentioning

confidence: 99%

PC-MAC: A Prescheduling and Collision-Avoided MAC Protocol for Underwater Acoustic Sensor Networks

Jin¹,

Xiao²,

Su³

2017

Journal of Sensors

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“…Therefore, the signaling overhead associated with performing time-sync and tracking independently is substantial. In order to reduce the overall acoustic communication overhead compared to previous time synchronization protocols, JSL proposes to address the two problems jointly using a shared acoustic signaling scheme [18]. A key difference between JSL and our proposed method is that the former still uses a number of bi-directional message exchanges between the submersible and beacons while our proposed ToA-TS method is designed to work with only one-way beacon transmissions.…”

Section: Related Workmentioning

confidence: 99%

Joint time synchronization and tracking for mobile underwater systems

Mirza

Schurgers

et al. 2013

Proceedings of the Eighth ACM International Conference on Underwater Networks and Systems - WUWNet '13

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Time synchronization and localization are key requirements for distributed underwater systems consisting of numerous low-cost submersibles. In these systems, submersibles are highly resource constrained and typically have limited acoustic communication capability. We investigate the problem of time synchronization and tracking for submersibles that only have the capability to receive acoustic signals. Traditional Long Base Line (LBL) systems track the location of submersibles by providing a GPSlike infrastructure that consists of a few reference beacons at known locations. In these systems the unknown positions of submersibles are estimated from beacon transmissions using timedifference-of-arrival (TDoA) based localization. As such TDoA makes the key assumption that beacon transmissions occur nearly concurrently in time. While this assumption is ensured in small LBL deployments it does not hold as the size of the system scales up. In this paper we identify scenarios where signals from multiple beacons are significantly lagged in time. We further identify the motion of the submersible between signal arrivals as a key factor that deteriorates the performance of TDoA, when transmissions are not concurrent. To address this problem we propose to track the submersible while performing timesynchronization. Our proposed technique, called Time of Arrival based Tracked Synchronization (ToA-TS) essentially extends GPS like localization for scenarios where beacon transmissions are not concurrent and submersibles are not capable of two-way communication.

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“…In this work, the transmission range is estimated based the assumption of that all the sensor nodes are synchronized, which can be achieved with many existing algorithms like [12]- [15]. The algorithm invokes three basic operations of the disjoint-set: MAKE-SET(x), which creates a new set consisting of the single member x such that x does not belong to another set; UNION(x, y) combines the sets containing x and y into a single unified set; FIND-SET(x) returns a pointer to a unique representative of the set containing x, where all members of a set point to their representative member.…”

Section: B Clustering Algorithmmentioning

confidence: 99%

Smart phone assisted city-scale wireless sensor network deployment for transportation system monitoring

Liu

Fiondella

Han

et al. 2012

2012 IEEE Conference on Technologies for Homeland Security (HST)

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Ensuring transportation network security is one of the most daunting challenges confronting homeland security agencies today. Significant research has been dedicated to model and analyze the vulnerability of transportation systems, yet notably fewer studies propose specific strategies for deploying defensive technologies to safeguard these systems. The ultimate goal of situational awareness for prevention and rapid response remains largely unaddressed. Wireless sensors and ad hoc networks are widely regarded as a promising approach to monitor systems and enhance their security. Furthermore, the growth in smart phone usage can contribute additional relay nodes to the network connecting the deployed sensors and command center. Such sensor networks offer the potential to detect a terrorist plot before it can be executed, support effective response to emergency events, and dynamically monitor traffic flows to facilitate efficient travel within a city. This paper present a scheme which turn the deployment into a optimization to maximize the weighted coverage, and we demonstrate the approach through the simulation, the result of which clear indicates its effectiveness.

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JSL: Joint time synchronization and localization design with stratification compensation in mobile underwater sensor networks

Cited by 33 publications

References 19 publications

PC-MAC: A Prescheduling and Collision-Avoided MAC Protocol for Underwater Acoustic Sensor Networks

PC-MAC: A Prescheduling and Collision-Avoided MAC Protocol for Underwater Acoustic Sensor Networks

Joint time synchronization and tracking for mobile underwater systems

Smart phone assisted city-scale wireless sensor network deployment for transportation system monitoring

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