DCNET 2017 Abstracts


Full Papers
Paper Nr: 6
Title:

A Quasi-realistic Internet Graph

Authors:

Paulo Salvador

Abstract: The existence of a realistic Internet interconnections model has been an important requirement to effectively support areas as routing optimization, routing security, and services QoS prediction. However, no usable and no useful models exist. The existing interconnection models are to (i) simplistic to be applicable in real scenarios, or (ii) incorporate to much uncorrelated information that cannot be used due to its complexity. This work presents the construction steps and final solution for a quasi-realist graph that models the Internet as an all. The graph is based on all known Internet exchange points (IX) and landing points of all known submarine cables. The lack of information about interconnections between IX and landing points is extrapolated from simple rules that take in consideration Earth geographic characteristics. This approach results in a graph that includes all major corner stones of the Internet while maintaining a simple structure. This graph can then be used to predict connectivity and routing properties between any two geographical points in Earth. The proof-of-concept results, even with very simplistic assumptions as similar node and link loads and symmetric routing by the shortest path, show that the model allows the prediction of the round-trip time of traffic and number of nodes between any two Internet points with an acceptable average error.

Paper Nr: 8
Title:

Feasibility of 5G Services Over Ka-band Athena-Fidus Satellite - A Study on Ka-band Frequency Use for 5G based Applications Over Satellite

Authors:

M. Luglio, C. Roseti, F. Zampognaro and E. Russo

Abstract: 5G is rapidly approaching: companies and public institutions are significantly investing to design, develop and deploy the next generation telecommunication systems which will be based on flexible network management and new services definition. In this forthcoming scenario, the satellite can play a meaningful role to allow meeting all the claimed requirements, i.e., to support/complement terrestrial networks for a large set of applications. The Athena Fidus system has been realized to support civil and governmental services. The assessment of the overall capacity provided this platform and, in particular, the nominal IP-based bandwidth per terminal is important for the definition of the services and to efficiently plan future its integration with terrestrial networks, in compliance with 5G scenarios. In this paper, the real characteristics of Athena Fidus DVB-S2/DVB-RCS links are considered to identify the set of services that will be possible to offer. The objective is to draw the operational context to be considered for the potential involvement of Athena Fidus in the next communication systems.

Paper Nr: 9
Title:

Toward Testing Security Attacks and Defense Mechanisms for P2PSIP in MANETs with a Simulator

Authors:

Alexandre Cormier, François Gagnon, Babak Esfandiari and Thomas Kunz

Abstract: Mobile Ad hoc NETworks (MANETs) are comprised of mobile devices communicating with each other over multi-hop wireless links. Because they do not require any fixed infrastructure, these networks are appropriate for communication in military operations, for example. The Session Initiation Protocol (SIP) is a standard for session establishment in Voice over IP context, notably, but is not adapted to MANETs and peer-to-peer (P2P) networks. Though solutions have been proposed, their security properties are not addressed in depth. We thus analyze the different threats affecting a military MANET used for P2PSIP, propose a security solution, based in large part on cryptographic challenges, to counter the identified threats and present some simulation-based experiment results for our proposed solution.

Paper Nr: 11
Title:

Metaheuristic Solutions for Solving Controller Placement Problem in SDN-based WAN Architecture

Authors:

Kshira Sagar Sahoo, Anamay Sarkar, Sambit Kumar Mishra, Bibhudatta Sahoo, Deepak Puthal, Mohammad S. Obaidat and Balqies Sadun

Abstract: Software Defined Networks (SDN) is a popular paradigm in the modern networking systems that decouples the control logic from the underlying hardware devices. The control logic has implemented as a software component and residing in a server called controller. To increase the performance, deploying multiple controllers in a large- scale network is one of the key challenges of SDN. To solve this, authors have considered controller placement problem (CPP) as a multi-objective combinatorial optimization problem and used different heuristics. Such heuristics can be executed within a specific time-frame for small and medium sized topology, but out of scope for large scale instances like Wide Area Network (WAN). In order to obtain better results, we propose Particle Swarm Optimization (PSO) and Firefly two population-based meta-heuristic algorithms for optimal placement of the controllers, which take a particular set of objective functions and return the best possible position out of them. The problem has been defined, taking into consideration both controllers to switch and inter-controller latency as the objective functions. The performance of the algorithms evaluated on a set of publicly available network topologies in terms execution time. The results show that the FireFly algorithm performs better than PSO and random approach under various conditions.

Short Papers
Paper Nr: 1
Title:

Multicast Algebraic Formal Modelling using ACP - Study on PIM Dense Mode and Sparse Mode

Authors:

Pedro Juan Roig, Salvador Alcaraz and Katja Gilly

Abstract: Video streaming is becoming ever important regarding Internet traffic running on either fixed or mobile networks worldwide. A great stake of that traffic is transferred by means of multicast in order to optimise network resources and one of the most popular protocols aimed at multicast communications is called Protocol Independent Multicast (PIM). This paper focuses on building up some models for its most common types, this is, PIM Dense Mode and PIM Sparse Mode, by using manual algebraic derivations, following the Algebra of Communicating Processes (ACP) axioms. The purpose of such models is to achieve a simplified approach, yet as close to specifications as possible, to PIM dynamics for the different scenarios presented.

Paper Nr: 2
Title:

Text Messages Protection System

Authors:

Andrey Starikovskiy

Abstract: This paper deals with the development of text messages protection from unauthorized access and malicious software. The structure of an attacker model and main security threats are provided. The article tells about the requirements for protective systems of this kind, examine the main information security threats. The tools of system development such as protecting messages using the RSA algorithm, protecting messages using ELGamal algorithm and protecting messages using an algorithm based on elliptic curves are described. The performance results and effectiveness of the proposed ideas are provided. The implementation can be performed directly on mobile subscribers in the form of a software product, or as additional functional software of a virtual operator. The proposed protection system can significantly enhance security of mobile communication.

Paper Nr: 10
Title:

Reduction of Mutual Coupling for UWB MIMO Antenna with a Broadband Balance T-Line

Authors:

Imtiaz Alam, Luqman Ali and Syed Shah

Abstract: A broadband balance T- type line is proposed to decrease the Mutual coupling of a smaller ultra-wide band (UWB) multiple-performance Multiple-Input-Multiple-Output receiving antenna. With the decoupling technique presented in this research, the UWB MIMO receiving antenna described covers the 3.1 – 9.4 GHz band with a decoupling of more than 17 dBs. The proposed broadband balance T-line is actually set in the margin area between two MIMO components and can be placed on the copper ground. A margin (radio antenna range) of 20*10 mm2 is achieved. The UWB MIMO receiving antenna is simulated and S- Parameters, radiation patterns are found to add productivity.

Posters
Paper Nr: 3
Title:

Hybrid Software Defined Networking Controller

Authors:

Kosala Perera, Udesh Gunarathne, Binal Chathuranga, Chamika Ramanayake and Ajith Pasqual

Abstract: There exists some common bottlenecks among the many available Software Defined Networking (SDN) controllers. Of these, the current analysis uses the Floodlight software controller to identify bottlenecks. The analysis has implemented these bottlenecks in a Field Programmable Gate Array (FPGA) in order to assess its feasibility. Thereafter, a Hybrid SDN controller has been developed. Generally Hybrid SDN refers to a networking approach where traditional networking and SDN protocols are used and operated in the same environment. Hybrid in this paper context refers to a controller which is developed both on software and hardware platforms in order to achieve a higher scalability which is a current issue existing in software controller, and thereby overcoming the identified bottlenecks. The analysis has offloaded computational intensive models to an FPGA and tested for performance. These performance figures have then been compared against the performance figures as of a stand-alone software controller.

Paper Nr: 5
Title:

QoS Analysis on Cable Video Delivery Networks

Authors:

Hiroaki Shikano, Takeshi Shibata, Qifeng Shen, Miyuki Hanaoka, Mariko Miyaki, Masahide Ban, Prasad Rallapalli and Yukinori Sakashita

Abstract: Telecommunication service providers are now using analytics to differentiate their network services with better Quality of Service (QoS) and Quality of Experience (QoE) as well as to increase operational efficiency. Cable service providers have complex video delivery IP networks, and efficient management of such networks as well as reduction of service impairment time are imperative. We have developed a new cable service QoS analysis solution that provides an end-to-end view of the control and data-plane flows associated with delivery of a video channel and shows identified failure points. Initial evaluation revealed that the solution can reduce the service down time to 62.3% of what it would be without the solution.