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Recently, the SDN paradigm, which splits the control and data planes, initially defined for wired networks, has been considered as a solution for the management of WSNs (Wireless Sensor Networks). However, the adoption of OpenFlow protocol, the most widely deployed SDN standard, directly into the WSNs may require novel / customized hardware or incur significant signaling overhead. This paper proposes...
In this paper, we design and implement the programmable nodes in software-defined sensor networks. Combining the emerging software defined networking (SDN) and the existing wireless sensor networks (WSNs), we propose an SDN-based sensor network architecture, called as software defined sensor networks (SDSN), which is composed of one centralized controller node, named as SDSN programmable controller...
Interconnects play a critical role in various networking environments including data center networks, high performance computing systems, networks-on-chip, etc. An important design concern of interconnects is the hardware cost, especially when the scale increases. In order to achieve lower hardware cost, a lot of previous work leverages a tradeoff between the cost and the performance. In this paper,...
Wireless communication at nanoscale faces unique challenges stemming from low hardware capabilities, limited power supply and unreliable channel conditions. The present paper proposes a networking scheme that can operate efficiently under such physical restrictions. Studying 3D multi-hop networks, the novel scheme offers scalable, trilateration-based node addressing and low-complexity packet routing...
Clock synchronization significantly assists in enhancing the data quality during the data dissemination phase from sensors to the base station. The existing studies towards addressing time synchronization errors don't address the associated latent problems in it. Therefore, this paper introduces a novel technique called as LNLCS i.e. Leveraging Network Lifetime using Clock Synchronization. The technique...
To solve problems that existed in wired water monitoring system, such as high cost and restricted monitoring water range, a kind of Lijiang River water environment monitoring system is designed based on WSN. In order to ensure long survival time of the sensor node and a high performance of routing node, MSP430 and ARM32F107 processor are employed respectively. After preprocessing data, MU709 3G module...
The increasing popularity of wireless sensor networks and IPv6 technology is creating varieties of applications for wireless sensor networks based on IPv6. However, IPv6-based Wireless sensor networks are vulnerable to a harmful attack known as the wormhole attack, where a malicious node overhears data packet at one location and tunnels it to a colluding node, which replays it locally. This can have...
Node location information in wireless networks can be of a great virtue to many applications. Some require absolutelocation information, which may considerably increase the cost and complexity of the node design and operation, while others can suffice with relative location estimation. In order to achieve acceptance localization accuracy, most existing techniques either require additional costly ranging...
Wireless sensor networks (WSN) can be widely used in many areas, such as environment monitoring, weather forecasting, traffic control, etc. The wormhole attack problem is an important issue in WSN since it causes many problems, such as routing error, a reduction in sensor lifetime and broken network topology. Several wormhole detection approaches have been proposed, but most of them need special hardware...
In typical settings for Wireless Sensor Networks (WSNs), a potentially large set of nodes operates under strict requirements concerning energy consumption and packet delivery success. If non-reliable or even malicious nodes participate, standard protocols can suffer in performance which may result in a limited functionality of the whole network. This paper addresses this issue by establishing end-to-end...
Routing protocols in Wireless Sensor Network (WSN) are responsible for propagating and coordinating of information transfer from one end of the network to the other. Dynamic Window Secured Implicit Geographic Forwarding (DWSIGF) is a robust, cross layer, security bound routing protocol that propagates information in a multi-hop network using the greedy and random forwarding strategies. These strategies...
Wireless Sensor Networks (WSN) is an evolving technology and a sizzling research topic among researchers due to their tractability and impartiality of network infrastructures, such as base stations. It can also be used for applications such as building, traffic surveillance, and habitat monitoring and many scenarios. It is flexible to go through physical partition and it avoids lot of wiring. The...
The reliable transmission of information is an inherently difficult and unpredictable task for LEACH-based networks. This is due to their adoption of centralized data exchange points which are expected to deliver data transmission reliability without being compromised by increasingly high rates of energy consumption. Given that this is a goal made more difficult by the constraints intrinsic to WSNs,...
Since the inception of the concept of Wireless Sensor Networks (WSNs), their applicability within the context of environmental monitoring systems (EMS) has constantly been explored. Egypt stands to gain much from WSN-based EMS systems if they are properly applied within its considerably large agricultural industry. A system is developed and tested using locally available hardware within the technical,...
As the demand for large-scale wireless multimedia sensor networks increases, so does the need for well-designed protocols that optimize the utilization of available networks resources. This requires experimental testing for realistic performance evaluation and design tuning. However, experimental testing of large-scale wireless networks using hardware testbeds is usually very hard to perform due to...
In real life, random wireless sensor network is very common, such as network of monitoring nodes in rural anti-theft system and as well as in agriculture-forestry environmental monitoring, and so on. Large-scale network, intensive nodes and disorganized distribution are the features of this network. If we transmit data by point-to-point method on such a network, then there exist disadvantages of large...
WirelessHART, the first international industrial wireless standard (IEC 62591), is built on top of the IEEE 802.15.4 standard. Both standards have progressed since the WirelessHART incarnation. WirelessHART has gone through a major release, added support for discrete devices, and lately turned attention to wireless control. While WirelessHART is still based on IEEE 802.15.4-2003, IEEE 802.15.4 has...
Abnormalities in sensed data streams indicate the spread of malicious attacks, hardware failure and software corruption among the different nodes in a wireless sensor network. These factors of node infection can affect generated and incoming data streams resulting in high chances of inaccurate data, misleading packet translation, wrong decision making and severe communication disruption. This problem...
While more and more wireless devices are phased in, binding relationship among them may become involved as wireless devices often operate in a self-organizing fashion. Though convenient, self-organization might fall short of user's expectation of flexibility sometime, leaving the user less room for binding adjustment. As a remedy, we propose a software-hardware codesign and implementation that enable...
The recent trend of ubiquitous computing and the Internet of Things demands everyday objects to be IP addressable and Internet accessible. This brings forward the challenges of converting or mapping formerly isolated wireless sensor networks (WSNs) to be IP compatible. IPv6 over Low power Wireless Personal Area Networks (6LoWPAN) is one of the first protocols which provide IP compatibility to low...
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