Key establishment is a fundamental prerequisite for secure communication in wireless sensor networks (WSN). In this regard, symmetric key cryptography is very attractive in WSN. In this paper, we have proposed Mobile ...
详细信息
Key establishment is a fundamental prerequisite for secure communication in wireless sensor networks (WSN). In this regard, symmetric key cryptography is very attractive in WSN. In this paper, we have proposed Mobile Agent (MA) Based Secure Location aware Key Establishment (MASLKE). In MASLKE, MAs find the location of sensor nodes and this information is used for key generation and distribution. MASLKE provides secure key exchange in intra and inter domain of the network and achieves high connectivity in WSN. Simulation results show that MASLKE is quite effective in achieving the goal of secure key distribution in large scale WSN.
Body sensor networks (BSNs) for healthcare put more emphasis on security and adaptation to changes in context and application requirement. Policy-based management enables flexible adaptive behaviour by supporting dyna...
详细信息
Body sensor networks (BSNs) for healthcare put more emphasis on security and adaptation to changes in context and application requirement. Policy-based management enables flexible adaptive behaviour by supporting dynamic loading, enabling and disabling of policies without shutting down nodes. This overcomes many of the limitations of sensor operating systems, such as TinyOS, which do not support dynamic modification of code. Alternative schemes for network adaptation, such as networking programming, suffer from high communication cost and operational interruption. In addition, the policy-driven approach enables fine-grained access control through specifying authorization policies. This paper presents an efficient policy system called finger which enables policy interpretation and enforcement on distributedsensors to support sensor level adaptation and fine-grained access control. It features support for dynamic management of policies, minimization of resources usage, high responsiveness and node autonomy. The policy system is integrated as a TinyOS component, exposing simple, well-defined interfaces which can easily be used by application developers. The system performance in terms of processing latency and resource usage is evaluated.
Efficient data management techniques are needed in wireless sensor networks (WSNs) to counteract issues related to limited resources, e.g. energy, memory, bandwidth, as well as limited connectivity. Self-organizing an...
详细信息
Efficient data management techniques are needed in wireless sensor networks (WSNs) to counteract issues related to limited resources, e.g. energy, memory, bandwidth, as well as limited connectivity. Self-organizing and cooperative algorithms are thought to be the optimal solution to overcome these limitations. On an abstract level, structured peer-to-peer protocols provide O(1) complexity for storing and retrieving data in the network. However, they rely on underlayer routing techniques. In this paper, we present the virtual cord protocol (VCP), a virtual relative position based efficient routing protocol that also provides means for data management, e.g. insert, get, and delete, as known from typical distributed hash table (DHT) services. The key contributions of this protocol are independence of real location information by relying on relative positions of neighboring nodes, short virtual paths because successors and predecessors are in their vicinity, and high scalability because only information about direct neighbors is needed for routing. Furthermore, VCP inherently prevents dead-ends and it is easy to be implemented.
A federated dual-band filter is developed for use in multi-sensorsystems for target tracking. Filter architecture consists of local processors and global processor to describe the distributed fusion problem due to co...
详细信息
A federated dual-band filter is developed for use in multi-sensorsystems for target tracking. Filter architecture consists of local processors and global processor to describe the distributed fusion problem due to correlation across track estimates for the same target. Each local processor incorporates modified probabilistic neural network with multiple model filter (MMF) to develop switching capability as adaptive manner to respond the target dynamics. The global processor combines local processor outputs via weighted least square estimator which can be implemented in a parallel structure to facilitate estimation fusion calculation. To determine dual-band process noise levels with MMF, the high level is selected by use of a conservative matrix upper bound to handle the track-to-track correlations and another is chosen as proper low level for tracking when target is not maneuvering. The resulting filter has better tracking performance improvement than traditional information matrix filter. Simulation results are included to demonstrate the effectiveness of proposed algorithm.
In distributed command and control (C 2 ), the primary tool for consistency in operational situational assessment (SA) is the common operational picture(COP) and continuous text updates that define relevant objects, t...
详细信息
ISBN:
(纸本)9781424432035
In distributed command and control (C 2 ), the primary tool for consistency in operational situational assessment (SA) is the common operational picture(COP) and continuous text updates that define relevant objects, their relationships, and their intent. Context often resides in the warfighterpsilas "conversation," or in manual hand gestures in the battlefield. The primary tactical method for capturing this information resides in text chat and voice communications. There is a primary reliance on text chat (due to its persistence) in hostile tactical environments with little to inform its practice or its improvement. We focus on three areas to improve the ability to communicate SA context by (1) developing a computational approach to acquiring chat SA themes from unstructured text; (2) exploiting the use of icons, images, and symbols in developing an SA language; and (3) prototyping a new technology of inscription with the development of data-generating gloves.
This paper proposes a novel hybrid cryptographic scheme for the generation of pair-wise network topology authenticated (TAK) keys in a Wireless sensor Network (WSN) using vector algebra in GF(q). The proposed scheme i...
详细信息
This paper proposes a novel hybrid cryptographic scheme for the generation of pair-wise network topology authenticated (TAK) keys in a Wireless sensor Network (WSN) using vector algebra in GF(q). The proposed scheme is deterministic, pair-wise keys are not pre-distributed but generated starting from partial key components, keys management exploits benefits from both symmetric and asymmetric schemes (hybrid cryptography) and each key in a pair node can be generated only if nodes have been authenticated (key authentication). Network topology authentication, and hybrid key cryptography are the building blocks for this proposal: the former means that a cryptographic key can be generated if and only if the current network topology is compliant to the ldquoplanned network topologyrdquo, which acts as the authenticated reference; the latter means that the proposed scheme is a combination of features from symmetric (for the ciphering and authentication model) and asymmetric cryptography (for the key generation model). The proposal fits the security requirement of a cryptographic scheme for WSN in a limited computing resource. A deep quantitative security analysis has been carried out. Moreover the cost analysis of the scheme in terms of computational time and memory usage for each node has been carried on and reported for the case of a 128-bit key.
In this paper, we propose and demonstrate a novel wireless camera network system, called CITRIC. The core component of this system is a new hardware platform that integrates a camera, a frequency-scalable (up to 624 M...
详细信息
In this paper, we propose and demonstrate a novel wireless camera network system, called CITRIC. The core component of this system is a new hardware platform that integrates a camera, a frequency-scalable (up to 624 MHz) CPU, 16MB FLASH, and 64MB RAM onto a single device. The device then connects with a standard sensor network mote to form a camera mote. The design enables in-network processing of images to reduce communication requirements, which has traditionally been high in existing camera networks with centralized processing. We also propose a back-end client/server architecture to provide a user interface to the system and support further centralized processing for higher-level applications. Our camera mote enables a wider variety of distributed pattern recognition applications than traditional platforms because it provides more computing power and tighter integration of physical components while still consuming relatively little power. Furthermore, the mote easily integrates with existing low-bandwidth sensor networks because it can communicate over the ieee 802.15.4 protocol with other sensor network platforms. We demonstrate our system on three applications: image compression, target tracking, and camera localization.
Intelligent systems, composed by devices with embedded computing capability, sensors and actuators interacting with the environment, will enhance and support manufacturing in the future. SOCRADES (Service-oriented cro...
详细信息
ISBN:
(纸本)9781424426294
Intelligent systems, composed by devices with embedded computing capability, sensors and actuators interacting with the environment, will enhance and support manufacturing in the future. SOCRADES (Service-oriented cross-layer infrastructure for distributed smart embedded devices) is a European research project that focuses on the development of a platform for next-generation industrial intelligent systems, exploiting SOA paradigm. Within SOCRADES a Technology Roadmap is being developed. Its aim is to provide inputs for the orientation of technological research to achieve the long term objectives required for the enhanced and pervasive exploitation of intelligent systems for manufacturing support. We present the Expected Features of Technology Areas (EFTAs) identified within SOCRADES Technology Roadmap. Then we show how the outcome of SOCRADES Technology Roadmap addresses important needs such as those pointed out by the Strategic Research Agenda developed by ARTEMIS (European Technology Platform for Embedded systems).
When an emergency occurs within a building, it may be initially safer to send autonomous mobile nodes, instead of human responders, to explore the area and identify hazards and victims. Exploring all the area in the m...
详细信息
ISBN:
(纸本)9781424420575
When an emergency occurs within a building, it may be initially safer to send autonomous mobile nodes, instead of human responders, to explore the area and identify hazards and victims. Exploring all the area in the minimum amount of time and reporting back interesting findings to the human personnel outside the building is an essential part of rescue operations. Our assumptions are that the area map is unknown, there is no existing network infrastructure, long-range wireless communication is unreliable and nodes are not location-aware. We take into account these limitations, and propose a novel algorithm, HybridExploration, that makes use of both mobile nodes (robots, called agents) and stationary nodes (inexpensive smart devices, called tags). As agents enter the emergency area, they sprinkle tags within the space to label the environment with states. By reading and updating the state of the local tags, agents are able to coordinate indirectly with each other, without relying on direct agent-to-agent communication. In addition, tags wirelessly exchange local information with nearby tags to further assist agents in their exploration task. Our simulation results show that the proposed algorithm, which exploits both tag-to-tag and agent-to-tag communication, outperforms previous algorithms that rely only on agent-to-tag communication.
Wireless sensor networks (WSNs) is a novel technology, which is developed with the advancement of micro-electronic, computing, and wireless communication technology. WSNs has merits of distributed information processi...
详细信息
ISBN:
(纸本)9781424425020
Wireless sensor networks (WSNs) is a novel technology, which is developed with the advancement of micro-electronic, computing, and wireless communication technology. WSNs has merits of distributed information processing, covering broadly, and remote monitoring and control. Considering the disperse deployment, wind power resource random and seasonal characteristic in wind plant, we apply WSNs to SCADA system for wind power plant in this paper, which conquers the lack of disperse distribution, difficulty of remote monitoring in wind plant. Considering node cost, resource demand and communication reliability, the hardware of sensor node and sink node are based on 80C51 and ARM chips respectively, and muC/OS-II is selected as the ARM chip operating system. IDD-PC is adopted as routing scheme in wireless data transmission among nodes, which can balance node energy consumption, and be propitious to stability of the network structure. As to the energy limitation of WSN, the method of automatic compensating energy by wind generator is provided.
暂无评论