Hybrid Mobile Ad Hoc Networks Research Articles

Exploring Multi-Path Communication in Hybrid Mobile Ad Hoc Networks

Ambient computing requires the integration of multiple mobile heterogeneous networks. Multi-path communication in such scenarios can provide reliability and privacy benefits. Even though the properties of multi-path routing have been extensively studied and a number of algorithms proposed, implementation of such techniques can be tricky, particularly when resource-constrained nodes are connected to each other through hybrid networks with different characteristics. In this paper, the authors discuss the challenges involved in implementing multipath communication on a middleware for hybrid mobile ad hoc networks. The authors present the PLASTIC middleware, several compelling applications of multi-path communication and the main issues concerning their implementation as a primitive middleware-provided communication.

Gateway Selection Protocol in Hybrid MANET Using DYMO Routing

In this paper, we propose a novel gateway (GW) selection protocol in hybrid Mobile Ad hoc Networks (MANETs). We focus on the situation that occurs when specialized, sensitive data is sent to the Internet from MANET nodes. These special data types are especially susceptible to security risks such as information leak and data falsification. Therefore, it is necessary for such special data to be forwarded by a secure/trusted GW which is controlled by a trusted network administrator. However, there should be multiple GWs deployed in a MANET, where the cost ineffectiveness makes it difficult for a network administrator to simultaneously manage every GW. Because of the risk of forwarding special data through an unmaintained GW, we propose 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, we improve upon one of the newest routing protocols, Dynamic MANET On-demand (DYMO), which works in consideration of application data. Through simulations, we evaluate our protocol in comparison with the conventional DYMO protocol. The results show that our protocol can make MANET source nodes choose GWs for specific data.

Secure ubiquitous connectivity in hybrid multipath wireless ad hoc network

AbstractWith the increasing demand of ubiquitous computing, the interconnection of mobile ad hoc network (MANET) to internet is also getting attractive, which is so‐called hybrid or connected MANET. Further, as the use of multipath ad hoc routing protocols is favorable in many application, hybrid multipath MANET, which is a MANET with multiple routes to the Internet, will also grow. Security issues in hybrid MANET, however, are still a challenging task. This paper addresses security issues related to Internet connectivity and ad hoc routing. In this paper, we present secure architecture framework for ubiquitous connectivity in hybrid multipath MANET that provides secure FA discovery as well as a secure Mobile IP registration for MN. We provide security and performance analysis for the proposed framework, and compare it with the exisitng schemes. It shows that the proposed framework is more effective than the existing schemes in terms of various parameters. Copyright © 2009 John Wiley & Sons, Ltd.

Enhanced access control in hybrid MANETs through utility‐based pre‐authentication control

AbstractWe study the issue of efficient network access control in mobile ad hoc networks (MANETs) with Internet connectivity through static gateways. This research issue is interesting in many scenarios, specially those in which operators deploy the MANET as an access network to their infrastructure.The goal is to provide a mechanism allowing Internet gateways to accept only authorized traffic without jeopardizing the overall network performance. Unlike traditional schemes in which ad hoc nodes need to get authenticated with their new gateway as they move around, we propose a solution based on pre‐authentication. It uses utility‐based optimal control to decide with which gateways to pre‐authenticate over time. Our simulation results show that the proposed scheme outperforms traditional schemes over a variety of scenarios and network parameters. Copyright © 2008 John Wiley & Sons, Ltd.

Joint Design of Routing and Medium Access Control for Hybrid Mobile Ad Hoc Networks

Efficient routing and medium access control (MAC) are very important for Mobile Ad hoc Networks (MANETs). Most existing routing and MAC protocols consider homogeneous ad hoc networks, in which all nodes are modeled as the same, i.e., they have the same communication capabilities and characteristics. Although a homogeneous network model is simple and easy to analyze, it misses important characteristics of many realistic MANETs such as military battlefield ad hoc networks. In addition, a homogeneous ad hoc network suffers from poor performance and scalability. In many ad hoc networks, multiple types of nodes do co-exist; and some nodes have larger transmission power, higher transmission data rate, and better processing capability, are more reliable and robust than other nodes. Hence, a hybrid network model is more realistic and provides many advantages for designing better routing and MAC protocols. In this paper, we present a new routing protocol called Hybrid Routing, which is specifically designed for hybrid MANETs. In addition, a novel MAC protocol is jointly designed for hybrid MANETs. Extensive simulations demonstrate that the proposed routing MAC protocols have very good performance.