Sciweavers

INFOCOM
2008
IEEE
14 years 6 months ago
On the Construction of a Maximum-Lifetime Data Gathering Tree in Sensor Networks: NP-Completeness and Approximation Algorithm
Abstract—Energy efficiency is critical for wireless sensor networks. The data gathering process must be carefully designed to conserve energy and extend the network lifetime. Fo...
Yan Wu, Sonia Fahmy, Ness B. Shroff
INFOCOM
2008
IEEE
14 years 6 months ago
A Novel Quantitative Approach For Measuring Network Security
—Evaluation of network security is an essential step in securing any network. This evaluation can help security professionals in making optimal decisions about how to design secu...
Mohammad Salim Ahmed, Ehab Al-Shaer, Latifur Khan
INFOCOM
2008
IEEE
14 years 6 months ago
Self-Organizing Dynamic Fractional Frequency Reuse in OFDMA Systems
—We describe an algorithm for sub-carrier and power allocation that achieves out-of-cell interference avoidance through dynamic fractional frequency reuse (FFR) in downlink of ce...
Alexander L. Stolyar, Harish Viswanathan
INFOCOM
2008
IEEE
14 years 6 months ago
Queueing Analysis of Loss Systems with Variable Optical Delay Lines
—Recently, a new optical device called variable optical delay line (VODL) has been proposed in the literature. As suggested by its name, the delay of a VODL can be dynamically se...
Duan-Shin Lee, Cheng-Shang Chang, Jay Cheng, Horng...
INFOCOM
2008
IEEE
14 years 6 months ago
Modeling the Evolution of Degree Correlation in Scale-Free Topology Generators
—In this paper, we examine the asymptotic behavior of degree correlation (i.e., the joint degree distribution of adjacent nodes) in several scale-free topology generators GED [13...
Xiaoming Wang, Xiliang Liu, Dmitri Loguinov
INFOCOM
2008
IEEE
14 years 6 months ago
Cell Selection in 4G Cellular Networks
—Cell selection is the process of determining the cell(s) that provide service to each mobile station. Optimizing these processes is an important step towards maximizing the util...
David Amzallag, Reuven Bar-Yehuda, Danny Raz, Gabr...
INFOCOM
2008
IEEE
14 years 6 months ago
Spatial Signatures for Lightweight Security in Wireless Sensor Networks
Abstract— This paper experimentally investigates the feasibility of crypto-free communications in resource-constrained wireless sensor networks. We exploit the spatial signature ...
Lifeng Sang, Anish Arora
INFOCOM
2008
IEEE
14 years 6 months ago
An Empirical Activity Model for WLAN Users
Abstract—Understanding user behavior in wireless environments is useful for a variety of reasons ranging from the design of better sleep algorithms for components of mobile devic...
Caleb T. Phillips, Suresh Singh