Wireless vs Wired
-Wireless operates on the unreliable radio channel that needs far more complex PHY layer as well as connection management
-Wireless should arrange change of connection point during the moves by a more complex registration and call routing
-Wireless has limited number of channels (radio frequency bands) that should be managed to be shared among a huge number of users
-Wireless needs security (authenticate and ciphering) to avoid fraud and preserve privacy
-Wireless, due to bandwidth scarcity, needs more complex source coding techniques (e.g. for voice or video)
-Wireless needs permanent and temporary addressing to support mobility
-Wireless mobile operates out of the battery energy and needs power management
-Wireless terminals use small screens that needs special graphics
Technical Aspects of Wireless Infrastructure
-Network deployment planning
-Mobility and location management
-Radio resource and power management
-Security
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