Title :
SHOP: An Integrated Scheme for SCTP Handover Optimization in Multihomed Environments
Author :
Zheng, Kun ; Liu, Min ; Li, Zhong-Cheng ; Xu, Gang
Author_Institution :
Inst. of Comput. Technol., Chinese Acad. of Sci., Beijing
Abstract :
Multihoming feature enables stream control transmission protocol (SCTP) to be a handover and mobility scheme for mobile users in multihomed environment. However, there are two flaws deteriorating SCTP handover performance. First, the congestion control mechanism of SCTP makes entire association experience a slow-start phase after handover, thus leading to a sudden-shrink of throughput. Second, the diversity of round-trip time (RTT) between separate paths incurs packet reordering and likely to trigger the spurious fast-retransmit, which degrades performance of reliable transport, too. This paper presents SHOP: an integrated scheme for SCTP handover optimization. By means of available bandwidth estimation technologies, SHOP avoids the slow-start phase after handover through configuring proper congestion control variables of new primary path. Meanwhile, postpone-handover based on RTT measurement is put forward in SHOP to minimize the negative effects of packet reordering. Detailed simulation results show the effectiveness of proposed scheme.
Keywords :
IP networks; bandwidth allocation; telecommunication congestion control; transport protocols; SCTP handover optimization; bandwidth estimation; congestion control; destination IP address; handover scheme; mobility scheme; packet reordering; round-trip time; stream control transmission protocol; Bandwidth; Computers; Degradation; Delay; Mobile computing; Protocols; Radio control; TCPIP; Throughput; Wireless LAN;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.460