Title :
Uplink VoIP Delays in IEEE 802.16e Using Different ertPS Resumption Mechanisms
Author :
Lakkakorpi, Jani ; Sayenko, Alexander
Author_Institution :
Dept. of Commun. & Networking, Helsinki Univ. of Technol., Espoo, Finland
Abstract :
In this paper, we present different IEEE 802.16e uplink channel access mechanisms that can be used to activate extended real-time polling service (ertPS) voice over IP (VoIP) connections after a silence period. The performance, especially uplink delay, of different resumption mechanisms is compared with each other using simulations. In addition to uplink VoIP delay, we study the uplink resource usage with different mechanisms. In our studies, we have found that using the fast feedback channel or multicast polling are the most promising approaches for efficient ertPS VoIP resumption.
Keywords :
IEEE standards; Internet telephony; IEEE 802.16e; ertPS VoIP resumption; extended real-time polling service; feedback channel; multicast polling; uplink VoIP delays; uplink channel access mechanisms; voice over IP; Bandwidth; Delay; Feedback; Mobile communication; Mobile computing; Portable media players; Quality of service; Scheduling; Ubiquitous computing; WiMAX; IEEE 802.16e; QoS; WiMAX; ns-2;
Conference_Titel :
Mobile Ubiquitous Computing, Systems, Services and Technologies, 2009. UBICOMM '09. Third International Conference on
Conference_Location :
Sliema
Print_ISBN :
978-1-4244-5083-1
Electronic_ISBN :
978-0-7695-3834-1
DOI :
10.1109/UBICOMM.2009.15
