Express Terminal Emulation
Original Publication Date: 1999-Aug-01
Included in the Prior Art Database: 2005-Apr-05
Adolf, R: AUTHOR [+2]
Mobile data communication is one of the most important new research fields, particularly the integration of portable computers systems into the enterprise networks by wireless communications technology. The possibility to access and process information any time and everywhere opens up.
Express Terminal Emulation
communication is one of the most important
new research fields, particularly the integration of portable
computers systems into the enterprise networks by wireless
communications technology. The possibility to access and process
information any time and everywhere opens up.
fields for the mobile data communication
are various. Application fields are everywhere there where people
have to move freely at the handling of their tasks and would like to
dispose about most different information nevertheless currently and
computers (laptop computers, notebooks) are used
since long time for field service personnel. Connecting these
mobile computers over radio to the existing central applications by
means of terminal emulation programmes increases further the
efficiency and flexibility of the field service at the customer
site. Sales and service turnaround times can be shortened,
improving the quality of service.
development of the terrestrial networks will
influence the mobile communication and its increasing acceptance
with the users fundamentally. A number of problems are linked to
the concept of "mobile data communication". Some of these are:
- Energy supply in addition to the energy requirement
of the mobile computer, the radio equipment
needs to be covered too.
- Transmission rate the transmission bandwidth of data radio
communication services remains still far
behind stationary networks.
- Costs the transmitting costs in mobile
communications are a multitude of those
typically arising in stationary networks.
- Complexity in a dynamic architecture logical
connections must be mapped to various
- Reliability in general the radio frequency channel is
more unreliable than a fixed network
terminal emulations transmit complete display
contents as soon as the user triggers an action by pressing a
function key on the host. To compensate for this disadvantage and
address some of the problems of the mobile radio communications
networks already described (such as speed, costs, safety), an
optimized variant of the 3270/5250 terminal emulation was developed
in the context of the ARTour communications platform. By the special
procedure which is used with the Express emulator the date volume is
reduced to 1/10 to 1/20, which affects in the noticeably shorter