Student Number :9600874K -
MSc research report -
School of Electrical Engineering -
Faculty of Engineering and the Built Environment / Telecommunication networks have evolved from voice only single service networks
to multimedia networks providing bearer services such as voice, data and video
transportation. Moreover, these networks, collectively called Next Generation Networks
(NGNs), enable rapid creation, deployment and management of advanced
services in an efficient manner. However, the initial business model of telcos was
to internally develop and provide these advanced services to customers. In this monopolized
environment, service development is driven by technological availability
rather than customer demands. Furthermore, vendor specific network elements prohibit
the development of re-useable service components, which in turn increases
the time-to-market of services. Deregulation and advances in Distributed Computing
Systems (DCSs) are driving towards open networks and rapid service delivery.
Third party Application Service Providers (ASPs) are envisioned to develop and
supply the services, with the telco providing bearer services. The use of softswitch
architectures such as Open Service Access (OSA) / Parlay (OSA / Parlay) in an
open NGN environment abstract services from core network elements through its
Application Programming Interface (API). Services are thus decoupled from vendor
and protocol specific network equipment and can be provided across a plethora
of network architectures. One major advantage of NGN is the ability to provide
bearer service in a mobile environment. Location Based Services (LBSs) are envisaged
to be an important class of services provided in the NGN environment. For an
LBS service to be complete, a geospatial database is necessary to provide location
information. This report documents the design and implementation of a Geospatial
Data Access Service Capability Feature (GDASCF) as an extension to the OSA
/ Parlay gateway. The GDASCF encapsulates necessary APIs that offer uniform
access to query geospatial databases. One key component of the design is the realization
of the Adapter layer which adapts function calls to an appropriate Database
Management System (DBMS). The introduction of the GDASCF and Adapter layer
provides a solution which results in flexible and rapid service creation.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:wits/oai:wiredspace.wits.ac.za:10539/1700 |
| Date | 14 November 2006 |
| Creators | Masenya, Lebogang Kenneth |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 456183 bytes, 4122 bytes, application/pdf, application/pdf, application/pdf, application/pdf |
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