1,093 research outputs found
A Survey on Wireless Sensor Network Security
Wireless sensor networks (WSNs) have recently attracted a lot of interest in
the research community due their wide range of applications. Due to distributed
nature of these networks and their deployment in remote areas, these networks
are vulnerable to numerous security threats that can adversely affect their
proper functioning. This problem is more critical if the network is deployed
for some mission-critical applications such as in a tactical battlefield.
Random failure of nodes is also very likely in real-life deployment scenarios.
Due to resource constraints in the sensor nodes, traditional security
mechanisms with large overhead of computation and communication are infeasible
in WSNs. Security in sensor networks is, therefore, a particularly challenging
task. This paper discusses the current state of the art in security mechanisms
for WSNs. Various types of attacks are discussed and their countermeasures
presented. A brief discussion on the future direction of research in WSN
security is also included.Comment: 24 pages, 4 figures, 2 table
Routing Security Issues in Wireless Sensor Networks: Attacks and Defenses
Wireless Sensor Networks (WSNs) are rapidly emerging as an important new area
in wireless and mobile computing research. Applications of WSNs are numerous
and growing, and range from indoor deployment scenarios in the home and office
to outdoor deployment scenarios in adversary's territory in a tactical
battleground (Akyildiz et al., 2002). For military environment, dispersal of
WSNs into an adversary's territory enables the detection and tracking of enemy
soldiers and vehicles. For home/office environments, indoor sensor networks
offer the ability to monitor the health of the elderly and to detect intruders
via a wireless home security system. In each of these scenarios, lives and
livelihoods may depend on the timeliness and correctness of the sensor data
obtained from dispersed sensor nodes. As a result, such WSNs must be secured to
prevent an intruder from obstructing the delivery of correct sensor data and
from forging sensor data. To address the latter problem, end-to-end data
integrity checksums and post-processing of senor data can be used to identify
forged sensor data (Estrin et al., 1999; Hu et al., 2003a; Ye et al., 2004).
The focus of this chapter is on routing security in WSNs. Most of the currently
existing routing protocols for WSNs make an optimization on the limited
capabilities of the nodes and the application-specific nature of the network,
but do not any the security aspects of the protocols. Although these protocols
have not been designed with security as a goal, it is extremely important to
analyze their security properties. When the defender has the liabilities of
insecure wireless communication, limited node capabilities, and possible
insider threats, and the adversaries can use powerful laptops with high energy
and long range communication to attack the network, designing a secure routing
protocol for WSNs is obviously a non-trivial task.Comment: 32 pages, 5 figures, 4 tables 4. arXiv admin note: substantial text
overlap with arXiv:1011.152
Security and Privacy Issues in Wireless Mesh Networks: A Survey
This book chapter identifies various security threats in wireless mesh
network (WMN). Keeping in mind the critical requirement of security and user
privacy in WMNs, this chapter provides a comprehensive overview of various
possible attacks on different layers of the communication protocol stack for
WMNs and their corresponding defense mechanisms. First, it identifies the
security vulnerabilities in the physical, link, network, transport, application
layers. Furthermore, various possible attacks on the key management protocols,
user authentication and access control protocols, and user privacy preservation
protocols are presented. After enumerating various possible attacks, the
chapter provides a detailed discussion on various existing security mechanisms
and protocols to defend against and wherever possible prevent the possible
attacks. Comparative analyses are also presented on the security schemes with
regards to the cryptographic schemes used, key management strategies deployed,
use of any trusted third party, computation and communication overhead involved
etc. The chapter then presents a brief discussion on various trust management
approaches for WMNs since trust and reputation-based schemes are increasingly
becoming popular for enforcing security in wireless networks. A number of open
problems in security and privacy issues for WMNs are subsequently discussed
before the chapter is finally concluded.Comment: 62 pages, 12 figures, 6 tables. This chapter is an extension of the
author's previous submission in arXiv submission: arXiv:1102.1226. There are
some text overlaps with the previous submissio
Recent Advances in Joint Wireless Energy and Information Transfer
In this paper, we provide an overview of the recent advances in
microwave-enabled wireless energy transfer (WET) technologies and their
applications in wireless communications. Specifically, we divide our
discussions into three parts. First, we introduce the state-of-the-art WET
technologies and the signal processing techniques to maximize the energy
transfer efficiency. Then, we discuss an interesting paradigm named
simultaneous wireless information and power transfer (SWIPT), where energy and
information are jointly transmitted using the same radio waveform. At last, we
review the recent progress in wireless powered communication networks (WPCN),
where wireless devices communicate using the power harvested by means of WET.
Extensions and future directions are also discussed in each of these areas.Comment: Conference submission accepted by ITW 201
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