The Experts below are selected from a list of 23469 Experts worldwide ranked by ideXlab platform
Hsiaohwa Chen - One of the best experts on this subject based on the ideXlab platform.
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secure and efficient time synchronization in Heterogeneous Sensor networks
IEEE Transactions on Vehicular Technology, 2008Co-Authors: Mohsen Guizani, Yang Xiao, Hsiaohwa ChenAbstract:Due to the collaborative nature of Sensor nodes, time synchronization is critical for many Sensor network operations. For Sensor networks deployed in hostile environments, security is critical to the success of time synchronization. Over the past few years, a number of secure time-synchronization schemes have been proposed for Sensor networks. However, these schemes are designed for homogeneous Sensor networks and may incur large communication/computation overhead or may cause accumulated synchronization errors (due to multihop relays of time reference messages). Several works have shown that better performance and security can be achieved in Heterogeneous Sensor networks (HSNs). In this paper, we present a secure and efficient time synchronization scheme for HSNs by utilizing powerful high-end Sensors. We implement the time-synchronization scheme in real Sensor nodes, and the experiments show that our scheme achieves higher synchronization accuracy than a popular Sensor time-synchronization scheme. The analyses demonstrate that our scheme is resilient to various attacks and significantly reduces communication overhead.
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two tier secure routing protocol for Heterogeneous Sensor networks
IEEE Transactions on Wireless Communications, 2007Co-Authors: Xiaojiang Du, Mohsen Guizani, Yang Xiao, Hsiaohwa ChenAbstract:Research on Sensor network routing focused on efficiency and effectiveness of data dissemination. Few of them considered security issues during the design time of a routing protocol. Furthermore, previous research on Sensor networks mainly considered homogeneous Sensor networks where all Sensor nodes have the same capabilities. It has been shown that homogeneous ad hoc networks have poor fundamental performance limits and scalability. To achieve better performance, we adopt a Heterogeneous Sensor network (HSN) model. In this paper, we present a secure and efficient routing protocol for HSNs - two tier secure routing (TTSR). TTSR takes advantage of powerful high-end Sensors in an HSN. Our security analysis demonstrates that TTSR can defend typical attacks on Sensor routing. Our performance evaluation shows that TTSR has higher delivery ratio, lower end-to-end delay and energy consumption than a popular Sensor network routing protocol.
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an effective key management scheme for Heterogeneous Sensor networks
Ad Hoc Networks, 2007Co-Authors: Yang Xiao, Mohsen Guizani, Hsiaohwa ChenAbstract:Abstract Security is critical for Sensor networks used in military, homeland security and other hostile environments. Previous research on Sensor network security mainly considers homogeneous Sensor networks. Research has shown that homogeneous ad hoc networks have poor performance and scalability. Furthermore, many security schemes designed for homogeneous Sensor networks suffer from high communication overhead, computation overhead, and/or high storage requirement. Recently deployed Sensor network systems are increasingly following Heterogeneous designs. Key management is an essential cryptographic primitive to provide other security operations. In this paper, we present an effective key management scheme that takes advantage of the powerful high-end Sensors in Heterogeneous Sensor networks. The performance evaluation and security analysis show that the key management scheme provides better security with low complexity and significant reduction on storage requirement, compared with existing key management schemes.
F. Lin - One of the best experts on this subject based on the ideXlab platform.
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maintaining differentiated coverage in Heterogeneous Sensor networks
Eurasip Journal on Wireless Communications and Networking, 2005Co-Authors: F. LinAbstract:Most existing research considers homogeneous Sensor networks, which suffer from performance bottleneck and poor scalability. In this paper, we adopt a Heterogeneous Sensor network model to overcome these problems. Sensing coverage is a fundamental problem in Sensor networks and has been well studied over the past years. However, most coverage algorithms only consider the uniform coverage problem, that is, all the areas have the same coverage degree requirement. In many scenarios, some key areas need high coverage degree while other areas only need low coverage degree. We propose a differentiated coverage algorithm which can provide different coverage degrees for different areas. The algorithm is energy efficient since it only keeps minimum number of Sensors to work. The performance of the differentiated coverage algorithm is evaluated through extensive simulation experiments. Our results show that the algorithm performs much better than any other differentiated coverage algorithm.
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IPCCC - Designing efficient routing protocol for Heterogeneous Sensor networks
PCCC 2005. 24th IEEE International Performance Computing and Communications Conference 2005., 1Co-Authors: F. LinAbstract:Most existing routing protocols consider homogeneous Sensor networks, i.e., all Sensor nodes have the same capabilities in terms of communication, computation, energy supply, etc. However, a homogeneous ad hoc network suffers from poor performance and scalability. Recent research has demonstrated its performance bottleneck both theoretically and through simulation experiments and testbed measurement. Furthermore, nodes in certain Sensor networks are Heterogeneous. In this paper, we propose to improve network performance by deploying Heterogeneous Sensor nodes. We design a novel routing protocol-Heterogeneous Sensor routing (HSR) for Heterogeneous Sensor networks. The performance of HSR is evaluated through extensive simulation experiments. Our results show that HSR performs better than two popular routing protocols-directed diffusion and mesh.
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Improving routing in Sensor networks with Heterogeneous Sensor nodes
2005 IEEE 61st Vehicular Technology Conference, 1Co-Authors: F. LinAbstract:Existing routing protocols mainly consider homogeneous Sensor networks where all Sensor nodes are the same. However, a homogeneous ad hoc network suffers from poor performance limit and scalability. Recent research has demonstrated its performance bottleneck both theoretically and through experiments. Furthermore, recently deployed Sensor network systems are increasingly following Heterogeneous designs, incorporating a mixture of Sensors with widely varying capabilities. To improve network performance, we propose to form Heterogeneous Sensor networks by deploying a small number of powerful high-end Sensors in addition to a large number of low-end Sensors. We design an efficient cluster head relay (CHR) routing protocol for Heterogeneous Sensor networks. Our simulation experiments demonstrate that CHR performs better than two popular Sensor network routing protocols.
Mohsen Guizani - One of the best experts on this subject based on the ideXlab platform.
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secure and efficient time synchronization in Heterogeneous Sensor networks
IEEE Transactions on Vehicular Technology, 2008Co-Authors: Mohsen Guizani, Yang Xiao, Hsiaohwa ChenAbstract:Due to the collaborative nature of Sensor nodes, time synchronization is critical for many Sensor network operations. For Sensor networks deployed in hostile environments, security is critical to the success of time synchronization. Over the past few years, a number of secure time-synchronization schemes have been proposed for Sensor networks. However, these schemes are designed for homogeneous Sensor networks and may incur large communication/computation overhead or may cause accumulated synchronization errors (due to multihop relays of time reference messages). Several works have shown that better performance and security can be achieved in Heterogeneous Sensor networks (HSNs). In this paper, we present a secure and efficient time synchronization scheme for HSNs by utilizing powerful high-end Sensors. We implement the time-synchronization scheme in real Sensor nodes, and the experiments show that our scheme achieves higher synchronization accuracy than a popular Sensor time-synchronization scheme. The analyses demonstrate that our scheme is resilient to various attacks and significantly reduces communication overhead.
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two tier secure routing protocol for Heterogeneous Sensor networks
IEEE Transactions on Wireless Communications, 2007Co-Authors: Xiaojiang Du, Mohsen Guizani, Yang Xiao, Hsiaohwa ChenAbstract:Research on Sensor network routing focused on efficiency and effectiveness of data dissemination. Few of them considered security issues during the design time of a routing protocol. Furthermore, previous research on Sensor networks mainly considered homogeneous Sensor networks where all Sensor nodes have the same capabilities. It has been shown that homogeneous ad hoc networks have poor fundamental performance limits and scalability. To achieve better performance, we adopt a Heterogeneous Sensor network (HSN) model. In this paper, we present a secure and efficient routing protocol for HSNs - two tier secure routing (TTSR). TTSR takes advantage of powerful high-end Sensors in an HSN. Our security analysis demonstrates that TTSR can defend typical attacks on Sensor routing. Our performance evaluation shows that TTSR has higher delivery ratio, lower end-to-end delay and energy consumption than a popular Sensor network routing protocol.
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an effective key management scheme for Heterogeneous Sensor networks
Ad Hoc Networks, 2007Co-Authors: Yang Xiao, Mohsen Guizani, Hsiaohwa ChenAbstract:Abstract Security is critical for Sensor networks used in military, homeland security and other hostile environments. Previous research on Sensor network security mainly considers homogeneous Sensor networks. Research has shown that homogeneous ad hoc networks have poor performance and scalability. Furthermore, many security schemes designed for homogeneous Sensor networks suffer from high communication overhead, computation overhead, and/or high storage requirement. Recently deployed Sensor network systems are increasingly following Heterogeneous designs. Key management is an essential cryptographic primitive to provide other security operations. In this paper, we present an effective key management scheme that takes advantage of the powerful high-end Sensors in Heterogeneous Sensor networks. The performance evaluation and security analysis show that the key management scheme provides better security with low complexity and significant reduction on storage requirement, compared with existing key management schemes.
Yang Xiao - One of the best experts on this subject based on the ideXlab platform.
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secure and efficient time synchronization in Heterogeneous Sensor networks
IEEE Transactions on Vehicular Technology, 2008Co-Authors: Mohsen Guizani, Yang Xiao, Hsiaohwa ChenAbstract:Due to the collaborative nature of Sensor nodes, time synchronization is critical for many Sensor network operations. For Sensor networks deployed in hostile environments, security is critical to the success of time synchronization. Over the past few years, a number of secure time-synchronization schemes have been proposed for Sensor networks. However, these schemes are designed for homogeneous Sensor networks and may incur large communication/computation overhead or may cause accumulated synchronization errors (due to multihop relays of time reference messages). Several works have shown that better performance and security can be achieved in Heterogeneous Sensor networks (HSNs). In this paper, we present a secure and efficient time synchronization scheme for HSNs by utilizing powerful high-end Sensors. We implement the time-synchronization scheme in real Sensor nodes, and the experiments show that our scheme achieves higher synchronization accuracy than a popular Sensor time-synchronization scheme. The analyses demonstrate that our scheme is resilient to various attacks and significantly reduces communication overhead.
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two tier secure routing protocol for Heterogeneous Sensor networks
IEEE Transactions on Wireless Communications, 2007Co-Authors: Xiaojiang Du, Mohsen Guizani, Yang Xiao, Hsiaohwa ChenAbstract:Research on Sensor network routing focused on efficiency and effectiveness of data dissemination. Few of them considered security issues during the design time of a routing protocol. Furthermore, previous research on Sensor networks mainly considered homogeneous Sensor networks where all Sensor nodes have the same capabilities. It has been shown that homogeneous ad hoc networks have poor fundamental performance limits and scalability. To achieve better performance, we adopt a Heterogeneous Sensor network (HSN) model. In this paper, we present a secure and efficient routing protocol for HSNs - two tier secure routing (TTSR). TTSR takes advantage of powerful high-end Sensors in an HSN. Our security analysis demonstrates that TTSR can defend typical attacks on Sensor routing. Our performance evaluation shows that TTSR has higher delivery ratio, lower end-to-end delay and energy consumption than a popular Sensor network routing protocol.
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an effective key management scheme for Heterogeneous Sensor networks
Ad Hoc Networks, 2007Co-Authors: Yang Xiao, Mohsen Guizani, Hsiaohwa ChenAbstract:Abstract Security is critical for Sensor networks used in military, homeland security and other hostile environments. Previous research on Sensor network security mainly considers homogeneous Sensor networks. Research has shown that homogeneous ad hoc networks have poor performance and scalability. Furthermore, many security schemes designed for homogeneous Sensor networks suffer from high communication overhead, computation overhead, and/or high storage requirement. Recently deployed Sensor network systems are increasingly following Heterogeneous designs. Key management is an essential cryptographic primitive to provide other security operations. In this paper, we present an effective key management scheme that takes advantage of the powerful high-end Sensors in Heterogeneous Sensor networks. The performance evaluation and security analysis show that the key management scheme provides better security with low complexity and significant reduction on storage requirement, compared with existing key management schemes.
Hongchi Shi - One of the best experts on this subject based on the ideXlab platform.
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prohet a probabilistic routing protocol with assured delivery rate in wireless Heterogeneous Sensor networks
IEEE Transactions on Wireless Communications, 2013Co-Authors: Xiao Chen, Zanxun Dai, Hongchi ShiAbstract:Due to different requirements in applications, Sensors with different capacities are deployed. How to design efficient, reliable and scalable routing protocols in such wireless Heterogeneous Sensor networks (WHSNs) with intermittent asymmetric links is a challenging task. In this paper, we propose ProHet: a distributed probabilistic routing protocol for WHSNs that utilizes asymmetric links to reach assured delivery rate with low overhead. The ProHet protocol first produces a bidirectional routing abstraction by finding a reverse path for every asymmetric link. Then, it uses a probabilistic strategy to choose forwarding nodes based on historical statistics using local information. Analysis shows that ProHet can achieve assured delivery rate ρ if ρ is set within its upper-bound. Extensive simulations are conducted to verify its efficiency.