Information Technology Reference
In-Depth Information
mLecture : this service allows the users to gain access to the lecture material through their
mobile devices. The users can request a specific lecture, which is adapted according to
the capabilities of the user devices and then delivered to their mobile devices.
mTest : this service is crucial to the learning process. The mTest service allows the users
to gain access to test materials that provide means of an evaluating process. A user can
request, like the mLecture service, a specific test, which is also adapted to the
capabilities of the user device then delivered to the user mobile device. The mTest
service may only runs individually on a user device and unaccompanied with any other
service whatsoever.
mTutorial : this service allows the users to gain access to a self-assessment test. It is a
combination between the mLecture and the mTest services. A user can request a self-
assessment test in a similar way as requesting a mLecture. After the user submits their
answers, he receives a feedback on his performance and the correct answers to the
questions he got wrong.
Intelligent Message Notification (IMN in short) : this service allows the users to
communicate with each other by exchanging messages via their mobile devices.
VoIP : this service allows the users to communicate with each other via phone calls
throughout the infostation-based mLearning system.
6.2 Policies
The InforStationCentre (ISC) provides the User Authentication, Authorisation and
Accounting (AAA) service which identifies each mobile user and provides him with a list
of services the user is authorised to access. This service is regulated by the following
policies:
When a user is within the range of an IS, the intelligent agent (PA) of the user's device
and the IS mutually discover each other. The PA sends a request to the IS for user
Authorisation, Authentication and Accounting (AAA). This request also includes a
description of the mobile device currently being used and any updates of user pro_le
and user service profile.
The IS forwards this AAA request to the ISC along with the profile updates. If the user
is successfully authenticated and authorised to utilise the services by the AAA module
within the ISC, a new account record is created for the user and a positive
acknowledgement is sent back to the IS. Then the IS compiles a list of applicable
services and sends this to the PA along with the acknowledgement. The PA displays the
information regarding these services to the user who then makes a request for the
service he wishes to use.
If the user chooses the mLecture service, then the following policies of the mLecture service
apply:
The PA forwards the mLecture service request to the InfoStation, which instantiates the
service. If the IS is unable to satisfy fully the user service request it is forwarded to the
ISC, which is better equipped to deal with it. In either case, the lecture is adapted and
customised to suit the capabilities of the user devices and the user own preferences, and
then delivered to their mobile devices.
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