WINSYS 2015 Abstracts

Area 1 - Sensor, Mesh and Ad Hoc Communications and Networks

Full Papers

Paper Nr:	11
Title:	Performance and Comparative Analysis of Design Schemes for Prioritised Data in Multi-hop Wireless Mesh Backbone Networks
Authors:	Sajid M. Sheikh, Riaan Wolhuter and G. J. van Rooyen
Abstract:	The contention based carrier sense multiple access with collision avoidance (CSMA/CA) was originally designed for single-hop networks. For CSMA/CA to be used in multi-hop distributed networks and to provide guaranteed data priority, the CSMA/CA needs to be optimised. An application is the smart grid consisting of different network domains with data of different priority levels. The IEEE802.11e standard was developed to provide differentiated data services. With the default enhanced distributed channel access (EDCA) settings for QoS, an unfairness problem exists for different data classes where higher priority data can starve lower priority data and also where bandwidth is allocated unfairly. In this paper, we carry out an investigation of six design schemes for wireless backbone networks for QoS provisioning of different data priority classes. The design schemes are based on the concept of low-cost design for suitability in rural areas where cost plays a major role. The simulation results were obtained using OMNET++ and the INET framework. The performance metrics used for the analysis were end-to-end latency, packet loss percentage and Jain’s fairness index. Simulation results show that hybrid network designs using distributed coordination function (DCF) and EDCA can improve QoS in terms of reliability and fairness.
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Short Papers

Paper Nr:	3
Title:	Implementation of Radio Tomographic Imaging based Localisation using a 6LoWPAN Wireless Sensor Network
Authors:	Vanessa Smallbon, Timothy Potie, Matthew D’Souza, Adam Postula and Montserrat Ros
Abstract:	Mobile localisation has numerous uses for logistics, health, sport and social networking applications. Current wireless localisation systems typically require the use of tracking devices to be worn or implanted. The use of tracking devices can hinder the types applications that can be used. Wireless localisation use wireless channel propagation characteristics, such as RF receive signal strength to localise a user’s position, which requires the use of complex radio hardware. We developed a wireless tracking system using radio tomographic imaging to track people without wearing a mobile tracking device. We evaluated our wireless localisation network with users in an indoor environment. Our localisation network used the 6LoWPAN wireless communications protocol.
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Paper Nr:	7
Title:	A Wireless Sensor Network System - For Monitoring Trees’ Health Related Parameters in a University Campus
Authors:	Luis Eduardo Pérez, Jorge Arturo Pardiñas-Mir, Omar Guerra, Javier de la Mora, Mauricio Pimienta, Nestor Hernández and Manuel de Atocha Lopez
Abstract:	This paper presents an experimental Wireless Sensors Network system which aims to contribute to the transformation of a university campus into a living lab to experiment with applications in the context of a smart city. The system acquires environmental data related to the campus trees’ health, stores it in a server to be analysed and makes it available to be displayed in a mobile application. Details are given to the design and results of the server’s system and the MobApp.
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Paper Nr:	9
Title:	Making Software-defined Networks Semantic
Authors:	T. Cooklev
Abstract:	This position paper identifies the increasing role of the controller in radios and radio networks. The paper defines wireless software-defined networks. A new cognitive radio ontology is proposed that is a hierarchical abstract description of the communication/networking scenario, RF devices, policies, and tasks. Radio protocols can also be described in a similar way. The ontology provides awareness and supports reasoning by the controller and applies to any RF device. Directions for future work are also briefly discussed.
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Paper Nr:	6
Title:	Localization Method According to Collect Data from an Acoustic Wireless Sensor Network - Example of Homarus Gammarus in Natural Area
Authors:	Jean-Sébastien Gualtieri, Bastien Poggi, Paul-Antoine Bisgambiglia, Thierry Antoine-Santoni, Dominique Federici, Emmanuelle de Gentili and Antoine Aïello
Abstract:	The platform STELLA MARE (Sustainable TEchnologies for LittoraL Aquaculture and MArine REsearch) has for objective to bring responses in the management of the sea in relation with the professional fishing. In this paper, we introduce an experiment on the monitoring of Homarus Gammarus. Using a passive tracking methodology using an acoustic wireless sensor network (AWSN), we try to follow some individuals, to define movement. The main objective is to build a lobster path according to the collected signal according a classical localization method to test our tracking method. Using a smoothing method and some resolution algorithms we are able to deduct a behaviour of tagged lobsters in an experimental area. This paper describes our methodology to estimate lobsters position according to data collected by an AWSN. This work represent a first step before the building a lobster model to simulate its behaviour in Corsican Mediterranean conditions.
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Paper Nr:	10
Title:	Minimising Energy Consumption in Wireless Sensor Network by Enhancement of LEACH Protocol
Authors:	Ahmadu Girgiri, Murtala Aminu Baba, Lawan Gana Ali and Mohammed Adamu
Abstract:	Wireless sensor network (WSN) is smart technology that consists of complex components, in which low battery life and energy consumption have become serious issues. Currently, the application of WSN keeps increasing, while the problem of energy consumptions also increases. Several studies have been conducted to overcome such issues, but still the issue remain challenging. To offer possible solutions, there is a need to introduce new technique that regulates the problems. This paper proposed possible schemes for enhancing energy saving in WSN by improving the algorithm “Low Energy Adaptive Clustering Hierarchy” (LEACH) Protocol. The research also analyses how to minimise energy dissipation and power required in WSN taking into consideration the total power, transmission frequency, transmission distance and transmission time between the sensors in a network. It also presents energy manipulations that help in solving the mentioned issues in various application of WSN.

Area 2 - Wireless and Mobile Technologies

Full Papers

Paper Nr:	13
Title:	Probability-based Controlled Flooding in Opportunistic Networks
Authors:	Sanjay K. Dhurandher, Satya Jyoti Borah, Mohammad S. Obaidat, Deepak Kr. Sharma, Sahil Gupta and Bikash Baruah
Abstract:	Opportunistic networks (Oppnet) are challenged networks in present wireless communication scenario. These networks are mainly applied to situations where a persistent end–to-end path between the source and the destination does not exist. Delay/Disruption Tolerant Networking (DTN) is mostly used to solve this end-to-end path problem in such networks. Many routing protocols have been proposed in literature that consider various performance metrics such as delivery delay, packet delivery rate, hop count, among others. In this paper, a new routing protocol named as PRoWait has been designed which can overcome the shortcomings of the already existing protocols in Oppnets. The proposed protocol also incorporates the merits of existing protocol so that it can be reliable and efficient for the communication of pedestrians with handheld devices. Simulation results obtained for the proposed scheme show better performance as compared to the Porphet, Spray and Wait and Epidemic routing protocols in terms of packets delivery probability, overhead ratio, and hop count performance metrics.
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Short Papers

Paper Nr:	2
Title:	A High Performance Class of DSTBC for HAPs
Authors:	Benigno Rodríguez and Juan Pablo González
Abstract:	High Altitude Platforms (HAPs) has been an interesting topic for years, but today it has a renewed interest for several companies, organizations and governments. In this paper a high performance class of Differential Space Time Block Codes (DSTBCs) is analysed for HAPs. The results show that this particular class of DSTBCs is a good alternative to consider for HAPs communications.
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Paper Nr:	12
Title:	Counting Credibility based Cooperative Spectrum Sensing Algorithm
Authors:	Lianlian Song, Li Wang and Shibing Zhang
Abstract:	In the cooperative spectrum sensing, if too many nodes take part in the cooperative data fusion, it would weigh the channel overhead and energy loss lot but improve the spectrum sensing performance little. This paper focuses on the channel overhead of cooperative spectrum sensing and the lifecycle of cognitive networks, and proposes a novel cooperative spectrum sensing algorithm. In the algorithm, all of the nodes are sorted by means of counting reliability. Only a part of nodes participate in the cooperative data fusion in the fusion centre. It cut down the number of nodes participating in the data fusion and save the average energy of the sensing nodes. The simulation results show that the proposed algorithm can effectively reduce channel overhead and prolong the lifecycle of cognitive network in the premise of ensuring the spectrum detection performance.
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Area 3 - Mobile Software and Services

Short Papers

Paper Nr:	8
Title:	An Efficient Agent Lookup Approach in Middlewares for Mobile Agents
Authors:	Hiroaki Fukuda
Abstract:	A Wireless Sensor Network (WSN) is typically deployed on the place in which no electric source is provided, meaning that the battery consumption concern is crucial. Due to their deeply-embedded pervasive nature, applications running on WSNs need to adapt to the changes in physical environment or user preferences. In addition, developers of these applications must pay attention to a set of additional concerns such as limited hardware resources and the management of a set sensor nodes. To appropriately address these concerns, middlewares based on mobile agent based like Agilla have been proposed. Applications for these middlewares are executed by the communications among agents, thereby a common task is to look up the agents. In this paper, we propose an efficient lookup approach for mobile agent based middlewares in WSNs. We evaluate the advantages of our proposal through the comparison with traditional lookup approaches.
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