An Analysis of VoIP Service Using 1xEV-DO Revision A System

While voice over Internet protocol (VoIP) on wireline network is maturing, VoIP on wireless mobile network is still in its infancy. This disparity is due to the fact that the wireline bandwidth is abundant and can be traded off for delay performance and overhead, whereas bandwidth in wireless mobile network is still a scarce resource. With the deployment of 1xEV-DO revision 0 (DOr0) worldwide, the spectrum efficiency has been significantly improved. However, DOr0 still lacks features essential for VoIP. For this reason, 1xEV-DO revision A (DOrA) has been standardized with many improvements favorable for VoIP implementation. In this paper, we explore the feasibility of implementing VoIP using DOrA. We identify challenges that hinder the VoIP using DOrA. We identify challenges that hinder the VoIP wireless mobile network in general, and investigate possible solutions and resultant capacity and performance.