Precise Time Synchronization over GPRS and EDGE

摘要

Modern communication services are more and more focused towards real time mobile multimedia applications like mobile video and Voice over IP. To assure sufficient Quality of Service control, appropriate measurements are needed. One of the most difficult tasks is to measure the exact value of one way delay, because very precise time synchronization between host and peer is needed. Most multimedia applications use JavaME platform and GPRS or EDGE technologies without any additional services or hardware. This leads to the very challenging task: To assure precise time synchronization using application layer and high latency networks.