Alan Sicher

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.

Cellular-PCS convergence of mobile data and voice

This paper contains Cellular/PCS mobile data and voice requirements with regards to network performance and architecture to suggest that wide area data and voice are convergent rather than divergent. The paper motivates a further integration of the existing Cellular Digital Packet Data and asynchronous data services with todays TDMA/CDMA air-interface standards and within the network and subscriber unit. The paper concludes by suggesting even more extensive voice and data integration based on the B-ISDN model for the future third generation wireless communications systems.