Recently, densified small cell deployment with overlay coverage through coexisting heterogeneousnetworks has emerged as a viable solution for 5G mobile networks. However, this multi-tier architecture along with stringent latency requirements in 5G brings new challenges in security provisioning due to the potential frequent handovers and authentications in 5G small cells and HetNets. In this article, we review…
Tags: OMNeT++ SDN
Passing the torch: Role alternation for fair energy usage in D2D group communication
By using device-to-device (D2D) communication, opportunistic networks promise to fill the gaps of thenetworking infrastructure in remote areas, to enable communication in emergency situations, and to inspire new applications. Yet, to become feasible in practice and accepted by users, it is crucial that the energy costs of D2D connections are small and shared fairly. Fairness, in particular, is a…
On fairness in LTE downlink MAC scheduling algorithms
A downlink MAC scheduler aims to improve the radio resources utilization in the Long Term Evolution (LTE) network. The MAC scheduler is responsible for sharing the available radio Resource Blocks (RBs) among different User Equipment (UEs) in time and frequency domains. Several downlink MAC schedulers have been proposed and implemented; however, providing fairness in terms…
A Smart Sensor Network for Sea Water Quality Monitoring
Measurement of chlorophyll concentration is gaining more-and-more importance in evaluating the status of the marine ecosystem. For wide areas monitoring a reliable architecture of wireless sensors networkis required. In this paper, we present a network of smart sensors, based on ISO/IEC/IEEE 21451 suite of standards, for in situ and in continuous space-time monitoring of surface water bodies, in particular for seawater. The system…
NOC based Banyan OpenFlow switch for Software Defined Networks
Nowadays, network management has become difficult because of tremendous increase on IP traffic demands. At this point, a flexible and dynamic control mechanism is needed that diminishes the complexity of physical topology. Software Defined Networking (SDN), is one of the proposed next generation technologies to overcome this problem. SDN paradigm provides a simple management strategy for dummy switches in physical topology…
Towards migrating security policies of virtual machines in Software Defined Networks
Virtual machine migration is an essential capability that supports cloud service elasticity. However, there is a big concern on what happens to the security policy associated with the migrated machine. Recently, Software Defined Networking (SDN) has gained momentum in both research and industry. It has shown great potential to be used in cloud data centers, particularly for inter-domains migration…
Optimal Model for the Controller Placement Problem in Software Defined Networks
In this letter, we propose a mathematical model for the controller placement problem in SoftwareDefined Networks (SDN). More precisely, given a set of switches that must be managed by the controller(s), the model simultaneously determines the optimal number, location, and type of controller(s) as well as the interconnections between all the network elements. The goal of the model is to…
An energy efficient mutual authentication scheme for secure data exchange in health-care applications using wireless body sensor network
The advancement of semiconductor and ubiquitous technology resulted in a smart sensor networkingsystem, which is an application of wireless sensor networks to health care applications (WMSN).Wireless Medical Sensor Network (WMSN) is a real-time continuous patient monitoring system, which provides a cost-optimal wireless sensor networking platform to track patient’s physiological data through the sensors attached to patient body. Limited computational power, storage, communication and energy capacity of WMSN demands…
Energy Efficient Self-Sustaining Wireless Neighborhood Area Network Design for Smart Grid
Neighborhood area network (NAN) is one of the most important sections in smart grid communications. It connects residential customers as part of a two-way communication infrastructure responsible for transmitting power grid sensing and measuring status, as well as the control messages. In this paper, we propose a cost-effective, flexible, and sustainable NAN design using wireless…
Energy harvesting small cell networks: feasibility, deployment, and operation
Small cell networks have attracted a great deal of attention in recent years due to their potential to meet the exponential growth of mobile data traffic, and the increasing demand for better quality of service and user experience in mobile applications. Nevertheless, wide deployment of small cell networks has not happened yet because of the…