The emergence of SDNs promises to dramatically simplify network management and enable innovation through network programmability. Despite all the hype surrounding SDNs, exploiting its full potential is demanding. Security is still the key concern and is an equally striking challenge that reduces the growth of SDNs. Moreover, the deployment of novel entities and the introduction of several architectural components…
Tags: OMNeT++ AD Hoc
Route optimization for DASH over Software Defined Networks
In this paper, a method for the selection of the paths between the server and the clients for Dynamic Adaptive HTTP Streaming (DASH) over Software Defined Networks (SDN). In the proposed method, an optimization model is presented for increasing the Quality of Experience (QoE) in the clients by increasing the average received bitrates and for providing fairness by decreasing…
Authentication handover and privacy protection in 5G hetnets using software-defined networking
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…
Power Boosting and Compensation During OTA Testing of a Real 4G LTE Base Station in Reverberation Chamber
A fully operational 4G long-term evolution (LTE) base station is tested in a reverberation chamber to analyze its performance in the presence of a multipath environment, typical of wireless and vehicular communications. Transmission quality parameters are measured ranging from the empty chamber situation (very rich multipath channel) to a very high loading condition to mitigate…
Evaluating the gap between compressive sensing and distributed source coding in WSN
Despite the large body of theoretical research available on compression algorithms for wireless sensornetworks (WSNs), only recently have researchers started to design and analyze practical distributed compression techniques. Also, approaches belonging to different fields such as signal processing (e.g., discrete Fourier transforms and compressive sensing) or information theory (e.g., distributed source coding) and networking are seldom evaluated against one another. In the…
Enabling Device to Device Broadcast for LTE Cellular Networks
In recent years, the public safety community has been aligning behind LTE (Long Term Evolution) technology as the basis for next generation public safety networks. Correspondingly, the 3GPP (3rd Generation Partnership Project) standards body has started multiple technical work initiatives on LTEenhancements to better support public safety use cases and requirements. Of particular importance to the public safety…
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…
An overview of ETSI TC SmartBAN MAC protocol
In this paper we introduce medium access control (MAC) protocol defined by ETSI TC (technical committee) SmartBAN (smart body area network). The key features of the protocol are a two-channel concept with different channels for data and control traffic, and a unique Multi-use Channel Access as one alternative channel access mode. The two-channel concept provides fast channel acquisition…
Workload-aware request routing in cloud data center using software-defined networking
Large latency of applications will bring revenue loss to cloud infrastructure providers in the cloud data center. The existing controllers of software-defined networking architecture can fetch and process traffic information in the network. Therefore, the controllers can only optimize the network latency of applications. However, the serving latency of applications is also an important factor in delivered user-experience for arrival requests.…
Testbed Innovations for Experimenting with Wired and Wireless Software Defined Networks
Widely available and remotely accessible test beds have been used for a direct comparison of innovative protocols and ideas with existing technologies. Therefore, multiple test beds have been established, aiming at providing experimentation services with both wireless and wired networks. In this context, several frameworks have been developed that enable easy experimentation with the heterogeneous…