Innovation in Mobile Email
8 Website: www.blackberry.net
1997-2000 Research In Motion Limited
Handheld
The technical details of the RIM Wireless Handheld are discussed later, but in the discussion of the end-to-
end link to the desktop there are several key points worth raising. Unlike “smartphone” mobile email
solutions, the BlackBerry solution includes software on both ends of the link. This allows for advanced
features such as compression and encryption as well as the filter/notification control mentioned earlier in
this section. In addition, the handheld’s long battery life is central to BlackBerry’s unique “push”
architecture. Without this battery life, the user would not be ‘Always On, Always Connected™’ to their
corporate email.
BellSouth Intelligent Wireless Network
Based on Ericsson’s Mobitex technology, the BellSouth Intelligent Wireless Network is a digital wireless
data network. Historically, the Mobitex network was limited to use by corporations for specialized vertical
applications. Through RIM’s pioneering efforts in Mobitex radio technology, the cost, size and power of
Mobitex devices are now ready for horizontal applications such as wireless email and two-way paging.
The BellSouth network offers significantly better performance and much greater capacity than “retro-
fitted” one-way paging networks. And unlike circuit-switched voice networks, the Mobitex network is a
packet data network like the Internet and other computer networks. This means that the connection between
the handheld and the company mail server is never broken, dropped or lost.
The following is an outline of some of the key network elements.
Benefit Network Element
Extensive
Coverage
•
National Coverage
– BellSouth Wireless Data’s network serves 93% of
the urban U.S. business population, which covers 266 metropolitan
statistical areas across the country, as well as major transportation corridors
and more than 130 of the nation’s top airports.
Strong
Performance
•
Symmetrical Network
– a full two-way data network with the ability to
send in all covered areas.
•
99.95% System Availability
– using features such as hierarchical
architecture, distributed intelligence, back-up power supplies and extensive
redundancies in the network infrastructure.
•
No Distorted Messages
– numerous fault-tolerant error detection and
correction methods are embedded in the system.
•
Fast Message Transmission
– offers near real-time, two-way messaging.
•
Unlimited Capacity
– the core network is digital. It operates using from 10
to 30 full duplex radio channels per coverage area, with the ability to
transparently add even more channels in the future. These, when combined
with cellular re-use frequencies, offer virtually unlimited data handling
capacity. BellSouth Wireless Data has spectrum in all 50 states, which
gives it the ability to add base stations wherever it requires additional
coverage.
Key Features
•
Guaranteed Delivery
– If a user’s handheld is turned off or is temporarily
out of coverage, the message is stored in a network “mailbox” and it is
forwarded automatically when the handheld is turned on or returns to
coverage.
•
Seamless Nationwide Roaming
– Users simply turn on their handheld and
send or receive messages to or from anywhere in the BellSouth Wireless
Data service area across the U.S. They do not need to re-register with the
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