Guest Editorial: Special Issue “SM 85-Wireless and Mobile Computing, Networking and Communications”

Abstract

This special issue of the MONET journal presents the state of the art research results on the recent advances in Wireless and Mobile Communications. The special issue is dedicated to selected papers from the fourth IEEE International Conference on Wireless and Mobile Computing, Networking and Communications (WIMOB 2008) held in Avignon, France, on October 12–14, 2008. A total of 19 papers have been fast tracked and only 9 papers have been accepted. Each of the submitted manuscripts is an extended version of the original WIMOB paper; each submitted paper has been reviewed by at least three reviewers, experts in their fields, and has gone through two cycle of revisions. To avoid the single point of failure for the certificate authority (CA) in MANET, Abderrezak Rachedi and Abderrahim Benslimane propose a decentralized solution in which nodes are grouped into different clusters. They proposed the Dynamic Demilitarized Zone (DDMZ) a solution for protecting the CA node against potential attacks. In addition, a RA selection algorithm is proposed in this paper such that nodes are selected based on a predefined selection criteria function and location (i.e., using directional antenna). Such a model is known as moderate. Based on the security risk, more RA nodes must be added to formalize a robust DDMZ. The authors considered the tradeoff between security and resource consumption by formulating the problem as a nonzerosum noncooperative game between the CA and attacker. Finally, empirical results are provided to support the solutions. In this paper, Takeshi Matsuda et al. proposed a gateway (GW) selection protocol in hybrid Mobile Ad hoc Networks (MANETs). The paper is focused on the situation that occurs when specialized, sensitive data is sent to the Internet from MANET nodes. Due to the risk of forwarding special data through an unmaintained GW, the authors proposed a routing protocol which allows a source node to have sensitive data forwarded to the Internet through a trusted GW. To achieve this desirable performance, the authors improved an existing routing protocol, Dynamic MANET On-demand (DYMO), which works in consideration of application data. Through simulations, the authors evaluated the proposed protocol in comparison with the conventional DYMO protocol. The paper “Directional Sensor Placement with Optimal Sensing Range, Field of View and Orientation” by Yahya Osais, Marc St-Hilaire and Fei R. Yu, introduces the new Optimal Sensor Configuration (OSC) problem where the goal A. Benslimane (*) LIA/CERI, University of Avignon, Avignon, France e-mail: abderrahim.benslimane@univ-avignon.fr URL: http://lia.univ-avignon.fr/personnel/fiches-personnelles/ benslimane/index.html/