Title :
A Vertical Soft Handoff Scheme Based on SIP in the Ubiquitous Wireless Network
Author :
Zhang, Wu ; Wang, JinLin
Author_Institution :
Nat. Network New Media Eng. & Technol. Res. Center, IACAS, Beijing, China
Abstract :
Ubiquitous Wireless Network will be the important infrastructure for ubiquitous information service in the future. Ubiquitous Wireless Network is objectively heterogeneous network, so vertical handoff is one of crucial topics. A vertical soft handoff scheme is proposed based on SIP using Wireless Access Gateway (RGW). RGW triggers and controls the handoff session to ensure same two-way delay of handoff and rate of zero-loss packet for real-time streaming media. Using M/M/1 queue model, delay of the scheme meets requirement of real-time streaming media.
Keywords :
media streaming; mobile computing; radio access networks; signalling protocols; SIP; heterogeneous network; real-time streaming media; ubiquitous wireless network; vertical soft handoff scheme; wireless access gateway; zero-loss packet; Computer networks; Delay; Ground penetrating radar; Information technology; Next generation networking; Pervasive computing; Quality of service; Streaming media; Ubiquitous computing; Wireless LAN; IMS; SIP; heterogeneous network; ubiquitous wireless network; vertical handoff;
Conference_Titel :
Computer Sciences and Convergence Information Technology, 2009. ICCIT '09. Fourth International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-5244-6
Electronic_ISBN :
978-0-7695-3896-9
DOI :
10.1109/ICCIT.2009.55
