Performance of a minimal CDPD deployment in a major metropolitan area for the year 2002

In the scope of the National Intelligent Transportation Systems (ITS) Architecture Study, wide area wireless data requirements have been assessed for three time frames: 1997, 2002, and 2012. This assessment covered not only the expected wide area ITS data loads but also projections for the non-ITS data loads. The performance of a minimal cellular digital packet data (CDPD) deployment in a major metropolitan area, was analyzed using the data requirements assessed for the year 2002, under the assumption of shared use of the CDPD infrastructure by all wireless applications. To study the performance of CDPD, two proprietary GTE simulation packages, MOSS and GRANET, were used. Performance information obtained includes average reverse link delay and average throughput for each sector in the actual cellular deployment, the probability density function (PDF) of the delay. The observed performance confirms the adequacy of CDPD for wide area wireless data service, accommodating even the most demanding and time-critical applications.