Advanced TDMA digital AMPS mobile data and messaging capabilities

This paper introduces current and planned mobile data and messaging capabilities of the TDMA Digital AMPS cellular and personal communications standard. In addition to providing more than a threefold capacity increase over the venerable analog AMPS standard by digital transcoding and time division multiplexing, D-AMPS provides a flexible and competitive technological platform capable of significant evolution. The introduction of a digital control channel (DCCH) to D-AMPS via the IS-136 standard increases battery life, adds support for hierarchical cell structures, improves private/public system discrimination, and strengthens support of new revenue generating wireless data and messaging services.