Title :
Reducing Call Setup Latency in Mobile VoIP Systems
Author :
Pack, Sangheon ; Park, Gwangwoo ; Kim, Younghyun ; Lee, Wonjun
Author_Institution :
Sch. of Electr. Eng., Korea Univ., Seoul, South Korea
fDate :
10/1/2011 12:00:00 AM
Abstract :
In mobile voice over IP (VoIP) systems, user mobility leads to the increased call setup latency to find out the current location of user, which has a negative impact on users call quality. In this letter, we propose a prefetching technique for user location to reduce the call setup latency. We develop an analytical model and investigate the impacts of mobility parameters and thresholds.
Keywords :
Internet telephony; mobility management (mobile radio); signalling protocols; SIP; call setup latency; mobile VoIP system; mobile voice over IP; mobility management; mobility parameter; mobility threshold; prefetching technique; user call quality; user location; user mobility; Analytical models; Mobile communication; Prefetching; Protocols; Registers; Servers; Wireless communication; Mobile VoIP; SIP; location management;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2011.082611.110527
