What are the advantages and disadvantages of WiFi ?

Wi-Fi is an abbreviation of the phrase Wireless Fidelity.

Advantages

  • Convenient
    • Useful for smartphones, tablet devices and other portable devices to connect at any convenient location within premises.
  • Simplicity
    • To connect a new device with a network, simply turn on the Wi-Fi and do the simple configuration settings.
  • Mobility
    • Internet can be accessed from anywhere, ie. Bus, train, coffee-shop, super market, etc.
  • Expandability
    • It is convenient to add more wireless devices with current hardware settings without any cost and time.
  • Efficiency
    • WiFi enabled devices are used at offices for convenient to access their files at any location and it gives more productivity for the company.
  • Cost Control
    • In WiFi network devices can be added without any cost unlike cables needs to be get man power to do the job.
  • Standardization of Technology
    • Wi-Fi technology has standardized for all countries, it helps for the mobile devices to connect the WiFi regardless of the location.

Disadvantages

  • Performance/Speed
    • Although Gigabit WiFi is available in the market, we cannot get the gigabit speed at all locations. Now cable network has 10 Gbps speed.
  • Connectivity/Reliability
    • WiFi signal is depends on the interference. Ie. Concrete wall will reduce the signal strength. Also, there is a limit for distance to connect WiFi signals.
  • Security
    • WiFi router has various encryption methods to secure our network password. Need to be done proper configuration before use the WiFi network.
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Router’s common issues

Routers are mandatory for small businesses and homes to connect the outside world.  Wireless routers are common for home and all types of businesses to get the internet connection to their desktops, laptops, smart phones, tablet devices and other wireless devices. Router determines how to send and where to send the information from one computer to another computer.  The information can be send from one network to another network as well.

Common issues of routers are:

  • Difficult configurations
  • Firmware updates
  • Hardware specs (Memory, HDD etc)
  • no. of simultaneous users

Common issues of Wireless routers are :

  • Interference (Positioning of router).
  • Distance between Wireless Access Points and client devices.
  • Router capacity for concurrent users.

Wireless Access Point Positioning

Placement of WiFi access point is most important in WiFi infrastructure design for optimizing nework.  It will reduce the hassle for IT staff after deployment of wireless access point setup.  Poor installation of WiFi will cause connectivity issue and lead to customer dissatisfaction.

The following tips helps to place a access points for better performance:

Free from obstacles

Try to place wireless access points without any obstacles such as wall, furniture, ceiling etc.  So that the Radio Frequency waves can be reach the client device faster speed.

Position

Access point placement on ceiling is best for horizontal coverage. If ceiling is too high try no to do. Do not put Access point above the ceiling tiles. It will create a extra barrier to go through the signal.

External antenna

Do not point external antennas all in one direction.

Interference

Avoid interference with the bluetooth devices, microwave ovens, fluorescent light bulbs, cordless phones, and other WLAN networks devices.

 

Types of Wireless Networks

Wireless network connections replaced cables to connect internet for laptops, smart phones and tablet devices using radio frequency waves.  With wireless connections smartphones and tablet devices are conveniently access internet connections without cables.  Second-generation 2G cellular telecom networks were commercially launched on the GSM standard in Finland in 1991.

 

Type Range Standards Performance Applications
Wireless Personal Area Network (WPAN) Within reach of a person Bluetooth, NFC, Wireless USB, ANT UWB & ZigBee Moderate Cable replacement for peripherals.
Wireless Local Area Network (WLAN) Within a campus or building IEEE 802.11 High Wireless extension of wired network.
Wireless Metropolitan Area Network (WMAN) Within a city IEEE 802.15 (WiMAX) High Wireless inter-network connectivity
Wireless Wide Area Network (WWAN)

 

Worldwide Cellular Low/Moderate Wireless network access.