In the present scenario, wireless communication plays a significant role all over the world. Wireless communication is a process of transmitting data between at least two focuses that are normally not associated with wires. Separations could be short, for example, a couple of meters for air-conditioner remote control, or even miles of distance for radio communication. It includes various types of fixed systems, mobiles, cellular telephones, personal digital assistants, portable two-way radios, Global Positioning System units, wireless keyboards & mouse, Bluetooth headsets, radio receivers and wireless networks etc. In this article the author intends to explain about the wireless networks, contrast between wired and wireless network, types of wireless networks, comparison of wireless network types, and benefits of wireless network.