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Detecting and reacting to faults is an indispensable capability for many wireless sensor network applications. Unfortunately, implementing fault detection and error correction algorithms is challenging. Programming languages and fault tolerance mechanisms for sensor networks have historically been designed in isolation. This is the first work to combine them. Our goal is to simplify the design of...
Design and development of wireless sensor network applications adds an additional layer of complexity to traditional computer systems. The developer needs to be an expert in resource constrained embedded devices as well as traditional desktop computers. We propose Tinylnventor, an open-source development environment that takes a holistic approach to implementing sensor network applications. Users...
Programming wireless sensor networks is a major challenge, even for experienced programmers. To alleviate this problem, prior work has proposed a paradigm shift from node-level microprogramming to macroprogramming, where the user specifies a distributed application using a single macroprogram that is automatically translated into a set of node-level microprograms. This paper makes the case that node-level...
Large scale sensor networks are non trivial to deploy due to their heterogeneous, distributed nature. This paper presents a technique to configure and deploy sensor applications on heterogeneous networks that is based on the use of virtual filesystem abstractions. The approach can augment existing sensor software build procedures with the ability to configure and deploy software, all using the filesystem...
The paper addresses the design-space exploration of network alternatives for complex distributed systems of embedded devices, e.g., for smart power grid or telecommunication services. While past research mainly provided efficient programming abstractions and HW/SW simulation tools, this work introduces the network perspective in the verification of different design solutions (e.g., different task...
Programming Wireless Sensor Networks (WSN) involves learning very different programming paradigms from those commonly used in the development of computer systems. Due to the lack of advantages obtained from the last generation high level programming languages, the growth of WSNs is significantly impeded. Programming WSN nodes requires knowledge of specific hardware which depends on the WSN architecture...
Using structured data formats like XML in wireless sensor networks to support exchangeability and heterogeneity on application level has become an important research topic in the area of large scale networked sensing systems. Besides, the usage of XML encourages the adaptation of service oriented programming techniques to simplify sensor network application engineering. While the sensor nodes still...
The emergence of multi-core wireless sensor nodes brings a new opportunity to the popularity of wireless sensor networks. At the same time, there arises the question “How to effectively debug concurrent tasks on a multi-core wireless sensor node?” In this paper, based on the uClinux operating system, we design TMCD (Task-level Multi-Core Debugger), a remote task-level debugger to support embedded...
In this paper, we report on our experiment with the deployment of a virtual machine, Netquest, which evaluates protocols written in a declarative language, over iMote devices. Netquest offers a new programming model for sensor networks with a high level of abstraction. Protocols and applications can be written in a simple rule-based language, which allows concise and application centric programming...
Object migration in wireless sensor networks has the potential to reduce energy consumption for a wireless sensor network mesh. Automated migration reduces the need for the programmer to perform manual static analysis to find an efficient layout solution. Instead, the system can self-optimise and adjust to changing conditions. This paper describes an automated, transparent object migration system...
Some sensor networks have large, non-deterministic communication delays which can be problematic because nodes must decide how long to wait before acting. A conflict arises when deciding on how much information is necessary: waiting a long time will improve accuracy but is detrimental to timeliness and acting quickly will improve timeliness but worsen accuracy. We present a relaxed barrier synchronization...
We define sensor middleware as the binding code mainly running between the sensor OS and applications providing programming abstractions to bridge the gap between application developers and low-level hardware. Hence it serves the purpose of simplified integration of components developed by multiple technology vendors. Middleware for distributed systems is a relatively mature research area with a considerable...
Embedded wireless networks have largely focused on open loop sensing and monitoring. To address actuation in closed loop wireless control systems there is a strong need to re-think the communication architectures and protocols for reliability, coordination and control. As the links, nodes and topology of wireless systems are inherently unreliable, such time-critical and safety-critical applications...
Wireless sensor networks in general and body sensor networks in particular enable sophisticated applications in pervasive healthcare, sports training and other domains, where interconnected nodes work together. Their main goal is to derive context from raw sensor data with feature extraction and classification algorithms. Body sensor networks not only comprise a single sensor type or family but demand...
This paper introduces a new virtual machine for sensor networks and small embedded devices which has been designed with efficient resource usage and an event-driven programming model in mind. The virtual machine runs on 8, 16, and 32-bit micro-controllers with as little as 4KBof volatile and 32 KB of non-volatile memory. Our virtual machine is not bound to a single high-level programming language,...
In order to decrease the traffic in the wireless sensor networks, a gene expression programming based temporal data aggregation technique (GEP-WSNDA) is presented. Two matching predictors with the same GEP-WSNDA models are deployed at the server and the node respectively, which predict the next immediate sampling value simultaneously. The sampling value and new model are sent to the server only when...
Programming sensor/actuator networks requires expertise in low-level programming, mainly because of using resource constraint hardware. The code of the resulting systems has typically no clear separation between application and system (infrastructure) logic.This minimizes the possibility to reuse code and leads very often to the necessity of major changes, in case the underlying platform (hardware...
This paper proposes micro muT-Kernel, a real-time operating system for networked tiny devices, which adopts a preemptive priority-based scheduling. It provides a sophisticated application programming interface to facilitate software development. In addition, to provide rich functionalities with a small-footprint, the kernel is reconfigurable with respect to the API. Moreover, muT-Kernel supports a...
Wireless reprogramming of sensor nodes is a requirement for long-lived networks due to changes in the functionality of the software running on the nodes. The amount of information that needs to be wirelessly transmitted during reprogramming should be minimized to reduce reprogramming time and energy. In this paper, we present a multi-hop incremental reprogramming protocol called Hermes that transfers...
Emerging of distributed sensor networks has brought about the need for development of related applications and management environment. This paper suggests a way of designing application reprogrammability capability and management environment for accessing sensor networks.
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