You are required to research, analyse, evaluate and identify potential use of this type of data communication, covering the issues related to the underlying networking technology and exploring potential application
Assignment Brief
QA BSc Computing Technologies
Coursework – Data Communication and Network Routing
Individual Written Report: Case Study Analysis
|
Academic year and term: |
2019/20 – Semester - 2 - Year 1 |
|
Module title: |
Data Communication and Network Routing |
|
Module code: |
|
|
Module Convener: |
|
|
Module Learning Outcomes |
Students who successfully complete this module will be able to:
|
|
Learning outcomes assessed within this piece of work as agreed at the programme level meeting |
This assignment will assess the following learning outcomes:
|
|
Weighting |
40% of the total module marks |
|
Type of assessment: |
|
This is an individual assignment designed to allow students to demonstrate abroad understanding, knowledge of the principles of networking technologies and the ability to research, analyse and evaluate common network underpinning principles and standards. It will also assess and evaluate the strength of student’s analytical abilities.
Scenario
You are required to research one of the technologies listed below and produce a report that: educates your fellow students.
- Li-Fi technology.
- Ad hoc Networks e.g. Vehicular ad-hoc network
- Body sensor networks / Wireless body sensor networks
- Wireless regional area network (WRAN)
- Any other topic agreed upon with the tutor
You report should investigate and analyse the underpinning network technologies based on which selected technology is working, exploring and evaluating these technologies, knowing that the underlying technologies are not immune, and hence using these technologies will inherent all vulnerabilities, a research is utmost important to evaluate and educate follow students of concern such as the usability, security, regulation and potential and future applications.
Task
You are required to research, analyse, evaluate and identify potential use of this type of data communication, covering the issues related to the underlying networking technology and exploring potential application.
Sample Answer
Case Study Report: Li-Fi Technology
Introduction
Li-Fi, short for Light Fidelity, is a wireless communication technology that uses light (usually LED bulbs) instead of traditional radio frequency (RF) like Wi-Fi. Professor Harald Haas introduced the concept in 2011. The idea behind Li-Fi is simple: transmit data through changes in light intensity that are invisible to the human eye but detectable by a photo-detector.
This report explains the working principles, underlying network technologies, applications, challenges, and future potential of Li-Fi, making it suitable for educating students about this growing field.
Underlying Networking Technologies
Li-Fi is based on Visible Light Communication (VLC). The main components are:
-
LED light source – for data transmission.
-
Photo-detector – to receive signals.
-
Signal processing unit – to convert light pulses into usable data.
Key technical concepts:
-
Modulation: Data is encoded by rapidly switching LED light on and off using techniques such as On-Off Keying (OOK) and Orthogonal Frequency Division Multiplexing (OFDM).
-
Duplex communication: Li-Fi supports both uplink and downlink communication.
-
Layered Protocols: Li-Fi operates across OSI layers, particularly affecting the physical and data link layers.
Li-Fi can theoretically provide data speeds of over 10 Gbps, which is much faster than Wi-Fi.
Usability and Applications
Li-Fi has various real-world applications:
-
Hospitals: Safe for use in MRI rooms where RF can interfere with equipment.
-
Aircraft: Passengers can use Li-Fi without interfering with navigation systems.
-
Smart Homes and IoT: Li-Fi can connect multiple devices in a confined space.
-
Underwater Communications: Light can travel better in water than RF signals.
-
Schools and Libraries: High-speed internet with reduced RF exposure.
Li-Fi also supports device-to-device communication in places where Wi-Fi may not work well or is not allowed.
Continued...