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Wireless Communication Methods

Wireless Communication Methods. Chapter 3. This presentation will:. Help you understand different types of wireless communication methods including: Bluetooth Radio It will help you understand their advantages and disadvantages and typical applications. Introduction.

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Wireless Communication Methods

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  1. Wireless Communication Methods Chapter 3

  2. This presentation will: • Help you understand different types of wireless communication methods including: • Bluetooth • Radio • It will help you understand their advantages and disadvantages and typical applications.

  3. Introduction • There are many way of communicating between devices. • Some methods make use of wireless technology to transmit data from one source to another source.

  4. Bluetooth • Bluetooth is a protocol which allows wireless transmissions to take place. • It works by transmitting data over the 2.5Ghz radio frequency (between TV and satellite frequencies!) • There are 3 confirmed versions: • Version 1.2 – 1Mbps • Version 2.0 – 2Mbps • Version 3.0 – 21 Mbps • You can see the difference in speed here: • http://www.youtube.com/watch?v=Eha7RcHs_TE

  5. Bluetooth • It works at a range of about 10 metres (like infrared). • The big difference between Bluetooth and infrared is that Bluetooth does not require line of sight whereas infrared does. • You can find Bluetooth on lots of different kinds of technology including: • Mobile phones • Laptops • Headsets • Console controllers

  6. Bluetooth • Typical Bluetooth applications include: • Bluetooth headsets used to allow for hands free communication to take place using a mobile phone or games console. • Transferring files between two mobile phones. • Connecting a mobile phone to a PC so that it can act as a modem for the laptop

  7. Bluetooth

  8. Radio • Transmitting data using radio frequencies has been around for ages... • But over the years we have got better and better at transmitting data and the types of data. • Wi-Fi networks make use of the IEEE 802.11 standard. Note: Other standards are in the pipeline. For more information visit: http://en.wikipedia.org/wiki/IEEE_802.11 (scroll down to standard and amendments)

  9. Radio • Typical applications of Wi-Fi technology include: • Wireless-enabled laptops being able to connect to an organisations network. • Laptops and smart-phones connecting to ‘hotspots’ to access the internet. • Wireless devices connecting to home networks. • Connecting devices such as scanners and printers to the home network wirelessly. • Connecting games consoles to the internet.

  10. Radio

  11. Activity • Describe the following wireless communication methods: • Bluetooth • Radio Remember: Identify, Amplify and Exemplify • Complete the following table

  12. Example exam questions • Describe two applications of Bluetooth. • Discuss the advantages and disadvantages of Bluetooth. • Describe three applications of wireless communication. • Why are standards necessary for wireless networks? • Why is encryption necessary on a wireless network?

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