Users run multiple applications simultaneously on single mobile device (MD) like mobile phone, tablet etc.. Utility and importance of different applications are not same and relative value depends on individual user. But in Internet architecture, available bandwidth is shared by applications equally. In wireless connection, fluctuation of bandwidth is common event and all applications are…
Tags: Veins OMNet++
Online virtual links resource allocation in Software-Defined Networks
Network virtualization is seen as a key networking paradigm for building diverse network services and architectures over a shared network infrastructure. Assigning network resources to virtual links and, more generally to virtual network topologies, efficiently and on-demand is one of the most challenging components of any network virtualization solution. This paper addresses the problem of on-line resource allocation of multiple virtual links on a Software Defined Network (SDN) infrastructure. The application context…
Results and analysis based on a novel LTE-R channel measurement at 2.6 GHz
In this paper, the measurements of 2 × 2 MIMO channel were performed at 2.6 GHz with 20 MHz bandwidth along the Harbin-Dalian passenger dedicated railway line. To improve the accuracy of multipath searching, we propose a multipath components (MCPs) extraction method based on this measurement, using the statistical properties of the data to reduce…
STS: Space-time scheduling for coordinating self-organization network functions in LTE
Self-Organizing Networks (SON) and a number of SO functions (SFs) have been proposed, e.g. in theLTE standard. Since SFs operate on the same network, adjusting the same set of parameters, conflicts arise. Mechanisms are thus required to resolve or minimize these conflicts. We propose Space-Time scheduling procedures that allow for separating the execution of SFs at…
I-WBAN: Enabling Information-centric data retrieval in heterogeneous WBAN
Reliable data retrieval in Wireless Body Area Networks (WBAN) is critical in the patient monitoring and other medical services. The limitation of energy supply and the mobility of body sensors exacerbate the difficulties of efficient data transmission. This paper proposed the Information-centric data retrieval in WBAN (named by I-WBAN) to improve the reliability and efficiency, which was featured by: (i) adopting the…
DMA-powered SDR processor exploiting DLP in LTE-Advanced
Software-defined radio (SDR) allows for the implementation and support of various wireless communication standards within a short development period. LTE-Advanced, which is the latest high-speed standard, demands a huge number of matrix calculations. We previously developed a digital signal processor (DSP) architecture with a direct memory access (DMA) function for exploiting data level parallelism (DLP) in LTE-Advanced…
Botnet detection using software defined networking
Software Defined Networking (SDN) is considered as a new approach promising simplified networkmanagement by providing a programmable interface. The idea of SDN is based on the separation of control plane from the data plane in networking devices. This is achieved by having the networkintelligence centralised in what is called as SDN controller. In this paper we propose techniques for botnet detection in networks using…
NDNFlow: Software-defined Named Data Networking
In this paper, we introduce NDNFlow: an open-source software implementation of a Named DataNetworking based forwarding scheme in OpenFlow-controlled Software-Defined Networks (SDNs). By setting up an application-specific communication channel and controller layer parallel to the application agnostic OpenFlow protocol, we obtain a mechanism to deploy specific optimizations into a networkwithout requiring a full network upgrade or OpenFlow protocol change. Our open-source softwareimplementation consists of both…
Dynamic Resource Discovery Protocol for Software Defined Networks
In Software Defined Networking (SDN), the network management is logically centralized but physically distributed among the controllers to improve the scalability compared with a completely centralized model. As an alternative to managing the network state in SDN in a distributed way, this work proposes a distributed protocol called SDN Resource Discovery Protocol (SDN-RDP). This protocol divides and distributes the network management among the controllers. In…
An Analysis of the Overhead and Energy Consumption in Flooding, Random Walk and Gossip Based Resource Discovery Protocols in MP2P Networks
All major mobile communication architectures are mainly centralized. When the mobile devices are switched on it will search for nearby base station or access point. The content being searched is mostly stored in a centralized directory manner. Peer-to-Peer platform can be one of the best possibilities to overcome the restrictions and resolve issues incurred due…