Compare the usefulness and limitations of WMANs, WLANs, and WPANs.
What will be an ideal response?
WMAN, WLAN, and WPAN all aim to provide wireless data connectivity.
Usefulness: A WMAN is meant to cover an entire metropolitan area; A WLAN provides similar services but covers a much smaller area (e.g., a building, an office campus, lounges) A WPAN is an extremely short-range network, formed around the personal operating space of a user. Typically WPAN are used to replace cables between a computer and its peripheral devices.
Limitations: In WMAN, some operational spectrum, such as the 10 to 66 GHz band of the IEEE 802.16 standard requires the precondition of LOS. The 2 to 11 GHz band in the IEEE 802.16a uses the licensed and license-exempt spectrum, including the crowded 2.4 GHz frequency.
WLANs transmit data via radio waves which can be blocked by metal. Also because the 2.4 GHz band is unlicensed, there are a lot of other devices which use the same band. The IEEE 802.11 standards family provides shared bandwidth; access points are bridges not switches. Also, Physical access point devices from different vendors are unlikely to interoperate across a distribution system due to the different approaches taken to distribution system design. In WPAN, the IEEE
802.15.X standards are also working in the crowded 2.4 GHz frequency.
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Fill in the blank(s) with the appropriate word(s).
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What will be an ideal response?
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