Ad Hoc Networks and Communication Technologies

Starter Activity

  • Introduction: Learning names and class discussion on Bluetooth.

Component 3: Communication Technologies

  • Essential for transmitting data between devices
  • Important in both personal and business contexts

Ad Hoc Networks

  • Temporary, decentralized wireless networks
  • Allow direct device-to-device connections without a central router

Learning Objectives

  1. Understand ad hoc networks and their types
  2. Identify advantages and disadvantages of ad hoc networks
  3. Recognize common security, performance, and availability issues

Traditional Networks

  • Fixed networks with PCs, routers, and cables
  • Hard to change due to hardwired systems

Advantages of Ad Hoc Networks

  • Scalability: Easy to add devices
  • Flexibility: Can be set up anywhere and anytime
  • Limited setup: Instant device communication after connection setup

Disadvantages of Ad Hoc Networks

  • Less Secure: Open connections vulnerable to attacks
  • Speed: Limited data transfer capacity
  • Unorganized: Lacks centralized control of the network

Common Types of Ad Hoc Networks

  • Personal Area Networks (PANs)
  • Open Wi-Fi
  • Tethering/Hotspots

Personal Area Networks (PANs)

  • Connect multiple nearby devices (e.g., via Wi-Fi/Bluetooth)
  • Limited range; often uses pairing with PINs for data exchange

Open Wi-Fi

  • Public access in locations like cafés and parks
  • Often unencrypted, making communications less secure

Tethering or Hotspots

  • Connects a device with network access to another device without
  • Can use wired (USB) or Wi-Fi connections

Common Issues with Ad Hoc Networks

  • Security Issues: Often insecure due to open network access
  • Performance Issues: Signal instability and limited range
  • Availability Issues: Poor coverage in rural areas and developing countries

Network Availability

  • Limited infrastructure in rural areas leads to poor coverage
  • Services can strain open networks due to limited resources
  • Wireless signals can be blocked by physical barriers

Tasks

  • Discuss personal experiences with ad hoc networks.
  • Create a poster/infographic on ad hoc networks including: definitions, advantages and disadvantages, types, and associated issues.