Explain Properties of Wireless Media and Types Wireless Standards,

Properties of Wireless Media

It carries electromagnetic signals representing binary digits using radio or microwave frequencies. This provides the greatest mobility option. Wireless connection numbers continue to increase.

Some of the limitations of wireless:

• Coverage area - Effective coverage can be significantly impacted by the physical characteristics of the deployment location.
• Interference - Wireless is susceptible to interference and can be disrupted by many common devices.
• Security - Wireless communication coverage requires no access to a physical strand of media, so anyone can gain access to the transmission.
• Shared medium - WLANs operate in half-duplex, which means only one device can send or receive at a time. Many users accessing the WLAN simultaneously results in reduced bandwidth for each user.

Wireless Standards

• Wi-Fi (IEEE 802.11) - Wireless LAN (WLAN) technology
• Bluetooth (IEEE 802.15) - Wireless Personal Area network (WPAN) standard
• WiMAX (IEEE 802.16) - Uses a point-to-multipoint topology to provide broadband wireless access
• Zigbee (IEEE 802.15.4) - Low data-rate, low power-consumption communications, primarily for Internet of Things (IoT) applications