How are WiFi and 3G same | Similarity of WiFi and 3G | Comparison of WiFi and 3G

Similarity of WiFi and 3G Technology.

1.   Both are wireless
2.   Both are access technologies
3.   Both offer broadband data service

Both are wireless :
Both of the technologies are wireless, which  avoids the need to install cable drops to each device
when compared to wire line alternatives and facilitates mobility. Avoiding the need to reconfigure or install wired local distribution plant can represent a significant cost saving, whether it is
within a home, building or in the last -kilometer distribution plant of a wireline service provider.Moreover, wireless facilities can provide scalable infrastructure when penetration will increase only slowly over time.
On the other hand, Wireless technologies also facilitate mobility. This includes both  the ability to move devices around without having to move cables and furniture and  the ability to stay continuously connected over wider serving areas. We refer to the first as local mobility and this is one of the key advantages of WLANs over traditional wireline LANs. The second type of mobility is one of the key advantages of mobile systems such as 3G. WLANs trade the range of coverage for higher bandwidth, making them more suitable for ‘‘local hot spot’’ service. In contrast, 3G offer much narrower bandwidth but over a wider calling area and with more support for rapid movement
between base stations. Although it is possible to cover a wide area with WiFi, it is most commonly
deployed in a local area with one or a few base stations being managed as a separate WLAN. In
contrast, a 3G network would include a large number of base stations operating over a wide area
as an integrated wireless network to enable load sharing and uninterrupted hand-offs when
subscribers move between base stations at high speeds

Both are access technologies
Both 3G and WiFi are access or edge-network technologies. This means they offer alternatives
to the last-kilometer wireless  network. Beyond the last kilometer, both rely on similar network
connections and transmission support infrastructure user device to the cell base station which may be at a distance of up to a few kilometers, and then dedicated wireline facilities to interconnect base stations to the carrier’s backbone network and ultimately to the Internet cloud. The local backhaul infrastructure of the cell provider may be offered over facilities owned by the wireless provider (e.g., microwave links) or leased from the local wireline telephone service provider (i.e., usually the incumbent local exchange carrier or ILEC).

Both offer broadband data service
Both 3G and WiFi support broadband data service, although as noted earlier, the data rate
offered by WiFi (11 Mbps) is substantially higher than the couple of 100 kbps expected from 3G
services. Although future generations of wireless mobile technology will support higher speeds,
this will also be the case for WLANs, and neither will be likely to compete with wireline speeds