Wi-Fi Weaknesses
-> The use of Wi-Fi band that is
2.4 GHz does not require a license in most countries provided that is stays
below
limit of 100mW and one accepts interference from other sources; including
interference which causes the users
devices to no longer function.
-> The spectrum assignments and
operational limitations are not consistent worldwide.
-> Power consumption is fairly
high compared to some other standards, making the battery life and heat a
concern
to some users.
-> Wi-Fi uses the unlicensed
2.4GHz spectrum, which often crowded with other devices such as Bluetooth,
microwave ovens, cordless phones, or video sender devices, and among many
others. This may cause
degradation in performance.
-> Wi-Fi networks have limited
range. A typical Wi-Fi home router might have a range of 45m (150ft) indoors
and
90m (300ft) outdoors. Ranges may also vary as Wi-Fi is no exception to the
physics of radio wave propagation
with frequency band.
-> The most common wireless
encryption standard, wired equivalent privacy or WEP has been shown to be
breakable even when it has been correctly configured.
-> Access points could be used to
steal personal and confidential information transmitted from Wi-Fi consumers.
-> Intervention of a closed or
encrypted access point with other open access points on the same or a nearby
channel can prevent access to the open access points by others in the area. It
poses a high problem in high-
density areas such as large apartment blocks where
many residents are operating Wi-Fi access points.
-> Inter-operability issues
between brands or deviations can cause limited connection or lower output
speeds.
-> Free access points can be used by the malicious to anonymous to initiate
an attack that would be extremely
difficult to track beyond the owner of the
access point.
WiMAX Weaknesses
-> Very long range connectivity (greater than 5
miles) – this is realistically achievable only with a high-quality
external
antenna and line-of-site service to the base station
-> Lack of available high-quality spectrum
-> Bad weather conditions such as rain could
interrupt the signal
-> Other wireless equipment could cause
interference
-> Multiplied frequencies are used
-> WiMAx is a very power-consuming technology and
requires significant electrical support
-> High installation and operational cost