End-to-end Delay Distributions in Wireless Tele-ultrasonography Medical Systems

End-to-end delay is an important consideration of the design of wireless tele-ultrasonography systems because such systems support delay-sensitive applications and require critical delay constraints. This paper addresses the characterisation and estimation of end-to-end delay distributions by using the Effective Capacity (EC) technique. A cross-layer simulation platform is built to 1) represent a scenario of remote medical ultrasound video streaming over fixed WiMAX networks, 2) transmit a real ultrasound medical video and 3) verify the accuracy of the EC-based delay distribution estimation for video frames. The results show that in most cases, the simulation results and estimation results are in good agreement.