Title :
SCTP-based Handover for VoIP over IEEE802.11 WLAN Using Device Virtualization
Author :
Wang, Wei-Cheng ; Hsu, Chih-Hung ; Chen, Yung-Mu ; Chung, Tein-Yaw
Author_Institution :
Yuan Ze Univ.
Abstract :
Wireless VoIP services require not only end-to-end transmission delay between end users but also small handoff delay between heterogeneous networks. This study designs and implements a SCTP-based mobile VoIP system in a campus network. The multi-homing capability and dynamic address configuration extension of SCTP are applied in the VoIP system to provide seamless handoff. Also, IEEE 802.21 specifies 802 media access-independent mechanisms (MIH) to optimize handoffs between heterogeneous 802 systems and cellular systems. The proposed VoIP system combines SCTP and 802.21 MIH function to improve the performance of handoff in a campus network.
Keywords :
Internet telephony; cellular radio; mobile computing; wireless LAN; IEEE 802.21; IEEE802.11 WLAN; SCTP-based handover; cellular systems; device virtualization; media access-independent mechanisms; mobile VoIP system; multi-homing capability; wireless VoIP; Access protocols; Availability; Communication system control; Cross layer design; Joining processes; Middleware; Network interfaces; Nonhomogeneous media; Switches; Wireless LAN; MIH; SCTP; VoIP; seamless handover; virtual device;
Conference_Titel :
Advanced Communication Technology, The 9th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-131-8
DOI :
10.1109/ICACT.2007.358544
