SATNAC 2007 Conference Papers
Network Management & OSS
Title: Towards
Optimized QoS Based –Charging Model
Authors:
Wissam Eltarjaman (Higher Institute of
Industry, Libya),
Majdi Ashibani (Higher Institute of Industry), Bashir El-Jabu (Higher
Institute of Industry)
Abstract:
This paper proposes a pricing model for Differentiated Services
(DiffServ) network. The service differentiation is modeled according to
the guaranteed QoS level for each class. This model assumes that a user
selects an appropriate class of service depending on his QoS
requirements. The users access to the service is assumed as bursty
traffic, and all the users are competing on one shared bandwidth. The
equivalent guaranteed capacity of a class is calculated according to
its guaranteed QoS level. A fixed price is given for each class for
certain guaranteed capacity. Then, an analysis for the service provider
to achieve maximum value of revenues is made by determining the total
required shared bandwidth, the service class optimum guaranteed
capacity and its optimum price.
Title:
A Geopolitical Analysis of long term Internet Network Telescope Traffic
Authors:
Barry Irwin (Rhodes University),
Nick Pilkington (Rhodes University, Richard Barnett (Rhodes
University), Blake Friedman (Rhodes University)
Abstract:
This paper presents results form the analysis of twelve months of
network telescope traffic spanning 2005 and 2006, and details some of
the tools developed. The most significant results of the analysis are
highlighted. In particular the bulk of traffic analysed had its source
in the China from a volume perspective, but Eastern United States, and
North Western Europe were shown to be primary sources when the number
of unique hosts were considered. Traffic from African states (South
Africa in particular) was also found to be surprisingly high. This
unexpected result may be due to the network locality preference of many
automated agents. Both statistical and graphical analysis are
presented. It is found that a country with a high penetration of
broadband connectivity is likley to feature highly in Network telescope
traffic, as are networks logically close to the telescope network.
Title: Immediate
Detection of Anomalies in Call Data - An Adaptive Intelligence Approach
Authors:
Isaac Olusegun Osunmakinde (University of Cape
Town),
Anet Potgieter (University of Cape Town)
Abstract:
Anomaly detection in telecommunications call data tries to discover
deviant behaviour of individual subscribers. Malicious behaviour has
been noted as one of the key causes of such anomalies, which have
consequently led to unquantifiable losses of revenue to many
telecommunication networks world-wide. Although the intentions of most
subscribers to these networks are unknown when making phone calls,
their behaviour pattern is reflected in their call data. Recent studies
have investigated the challenges of anomaly detection but have not
given conclusive solutions to address this problem. To maximize the
true positive rates and minimize false detection at an acceptable
level, this paper presents the Telecommunications Anomaly Detection
System (TADS) which efficiently facilitates immediate detection that
will help call analysts and managers with adaptive decisionmaking. We
developed and implemented the TADS which uses Behavioural Bayesian
Networks (BBNs) to address this challenge. The empirical evaluation
results obtained using real world land-line call data for subscribers
of a local Telecommunication Services Provider (TSP) demonstrated that
the TADS can detect and act upon anomalies in telecommunication
networks as it happens.
Title:
**
A Service Oriented Architecture guided by the NGOSS
Authors:
Willem H.A. Senekal (Telkom SA),
Alexander J. Graaff (Telkom SA), John J. Davis (Telkom SA)
Abstract:
The ever increasing demand of customers for better and faster delivery
of services contributes to the high rate of change within the
telecommunications industry to meet these demands. Telecommunication
operators need to rapidly react to these customer demands. In this
paper a brief overview is given on the New Generation Operations
Systems and Software (NGOSS) framework and Service Oriented
Architecture (SOA) principles to assist principles to assist a
telecommunications operator in a dynamic environment. A case study
based on SOA principles and guided by the NGOSS is also discussed.
Title:
Implementation of an Internet Access Cost Management System for
Disadvantaged Communities
Authors:
Paul Tarwireyi (University of Fort
Hare),
Alfredo Terzoli (University of Fort Hare), Mamello Thinyane (University
of Fort Hare)
Abstract:
Rural Internet connectivity projects aimed at bridging the digital
divide have sprouted up across many developing countries. After the
initial deployment, economic sustainability remains one of the greatest
challenges facing these projects. This paper presents the design and
initial implementation of an Internet Cost Management System that will
enable the exploration of suitable pricing models to generate revenue
to make the infrastructure economically sustainable. An important goal
of the exploration is the establishment of what would be regarded as
equitable cost sharing in rural, marginalized communities in South
Africa, such as the community in Dwesa on the Wild Coast.
Title: Design
Considerations for a Visual-Based Interfacing Device for Telco Operation
Authors:
Willem Visser (University of
Johannesburg),
Yuko Roodt (Highquest), Willem Clarke (University of Johannesburg)
Abstract:
The parts of the system in the telecommunication environment that is
used by technicians are sometimes completely menu driven. The
interfaces to these parts can be made much simpler. Visual-based
interfacing is a relatively new field of interest with advancements
being made toward marker free human input tracking. This paper
investigates the issues regarding the design of one such a system.
Specifically, it looks at the factors concerning the telecommunication
environment as well as factors concerning the setup of the camera being
used to capture the user’s input. It also investigates how
shadows being cast by the user’s hand against the background,
could affect the detection of user input.