1. Aims and Objectives Wireless types Wireless Devices Standards
What are the options for specific situations
Wireless Devices
The devices needed to make a wireless network
Standards
Who makes and set the standards
The Next stage
Wireless Electricity!

2. Wireless Networking Options
Ad-Hoc mode
Similar to using crossover cable for wired Ethernet

3. Wireless Networking Options
Infrastructure mode
Similar to using a hub or switch
Requires Wireless Access Point
Link to wired LAN and/or WAN (Internet)

4. Fixed wireless hardware
Network Interface Cards
Wireless Access Points
Combined devices very common e.g.
access point
router
switch
Firewall etc.

5. Fixed Wireless Networking Standards
Institute of Electrical and Electronics Engineers (IEEE)
Mbps ** Obsolete **
a 54Mbps
b 11Mbps
g 54Mbps (Backwards compatible with b) n 600Mbps Range upto 2300m

6. What stops WiFi working?
WiFi has 11 channels so changing channel may help avoid interference
Interference
Cordless phones
Microwave ovens
Wireless keyboards & mice
Obstructions
Walls / ceilings / floors
Furniture
Try moving the position of the wireless access point

7. MiMo multiple-input multiple-output
One of the major improvements with n
Data sent by multiple paths
Helps signal to work round obstructions and avoid throughput
Up to 10x faster than g
Wireless Electricity
Note the multiple aerials

8. Hybrid network  Internet
WAP
Modem
Router
WAP = Wireless Access Point
Switch
WAP needs to be positioned to give good coverage of required areas