The goal for 4G wireless networks was to let
users move from one type of wireless network to
another. For example, when at home, a user could
use the mobile device as a cordless phone to access
the public switched telephone network, but when
in the car, he or she could connect to a cellular network.
When in an area not covered by a cellular
service, the user could switch to a satellite-based
network. After reaching the office, he or she
could switch to a high-bandwidth wireless LAN.
The factors distinguishing the 4G network from
earlier networks would be the capability to roam
across cellular networks, wireless LANs and
WANs, satellites, and other networks; IP interoperability;
and higher bit rates (50 Mbps or more).
The goal for 4G wireless networks was to let
users move from one type of wireless network to
another. For example, when at home, a user could
use the mobile device as a cordless phone to access
the public switched telephone network, but when
in the car, he or she could connect to a cellular network.
When in an area not covered by a cellular
service, the user could switch to a satellite-based
network. After reaching the office, he or she
could switch to a high-bandwidth wireless LAN.
The factors distinguishing the 4G network from
earlier networks would be the capability to roam
across cellular networks, wireless LANs and
WANs, satellites, and other networks; IP interoperability;
and higher bit rates (50 Mbps or more).
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