wireless sensor networks, due to the characteristics of sensors such as wireless communication channels, the lack of infrastructure and targeted threats, are very vulnerable to the various attacks. routing attacks on the networks, where a malicious node from sending data to the base station is perceived. in this article, a method that can be used to transfer the data securely to prevent attacks...

We investigate the problem of maximizing network capacity sustained by IEEE 802.11 DCF in multi-hop wireless networks. By explicitly incorporating two key system parameters – carrier sense threshold and transmit power – into our analysis, we derive an analytical relation between network capacity and the level of spatial reuse characterized by physical carrier sense. In homogeneous networks wher...

1570-8705/$ see front matter 2010 Published b doi:10.1016/j.adhoc.2010.04.006 * Corresponding author. Tel.: +1 217 419 6556. E-mail addresses: [email protected] (K.-J. Park), jch Choi), [email protected] (Y.-C. Hu), [email protected]. 1 K.-J. Park was with the Department of Computer Illinois at Urbana-Champaign at the time of this work National University, Seoul, Korea. 2 J. C. Hou was with the Depar...

sensor networks generally consist of a very great number of sensor nodes which will be spread into a vast environment and aggregate data out of it. the sensor nodes are afflicted with some limitations as follows memory, reception, communication as well as calculation capability, and battery power. the transmission of a great amount of extra data increases data transmission and proportionally in...

Very few technologies illustrate the fast rate of technological innovations more than wireless sensor networks. Sensor networks offer a virtual path capability to carry differentiated services efficiently across the wireless backbone. In this paper, we provide a new efficient strategy for loop detection in Multi-protocol Label Switching (MPLS) for wireless networks—MPLS is a novel wireless netw...

Most of the existing works have been evaluated the performance of 802.11 multihop networks by considering the MAC layer or network layer separately. Knowing the nature of the multi-hop ad hoc networks, many factors in different layers are crucial for study the performance of MANET. In this paper we present a new analytic model for evaluating average end-to-end throughput in IEEE 802.11e multiho...

Wireless Mesh Networks (WMNs) are consist of mesh routers. Mesh routers are built with multiple radios for improving capacity of network with the assignment of different frequency bands (channels). Establishment of routing is very important for getting good output or achieving good performance in multi radio wireless networks. In this paper we have proposed Weighted Cumulative Consecutive Confl...

Physical carrier sensing has to date mainly been exploited for improving medium access control in wireless networks. Recently, a parallel algorithm striving to extensively exploit physical carrier sensing for constructing and maintaining a connected dominating set (CDS), which is also known as spanner, backbone, or overlay network in wireless ad hoc networks with interference ranges larger than...

Cognitive radio has been an active research area in wireless communications over the past 10 years. TV Digital Switch Over resulted in new regulatory regimes, which offer the first large-scale opportunity for cognitive radio and networks. This article considers the most recent regulatory rules for TV White Space opportunistic usage, and proposes technologies to operate in these bands. It addres...