TY - GEN
T1 - An analysis of alterations to the SCTP RTO calculation mechanism for WLAN environments
AU - Fallon, Sheila
AU - Jacob, Paul
AU - Qiao, Yuansong
AU - Murphy, Liam
AU - Fallon, Enda
AU - Hanley, Austin
PY - 2008
Y1 - 2008
N2 - As a connection oriented transport layer protocol the Stream Control Transmission Protocol (SCTP) inherits many of the features of the Transmission Control Protocol (TCP) including the mechanism by which Retransmission Timeout (RTO) is calculated. Previous investigations have established that the mechanism through which SCTP calculates RTO is inappropriate in Wireless LAN (WLAN) environments. This paper investigates the performance implications of changes to the SCTP RTO calculation mechanism. In particular alterations to the parameters α, the smoothing factor, and β, the delay variance factor are investigated. Results indicate that performance improvements are achievable through careful selection of α and β values. Throughput improvements of 63% over the default mechanism defined in RFC 4960 are described. These performance improvements however, while significant, still can not address the switchover delays which result from the distortions caused by continuously increasing RTT values in WLAN environments.
AB - As a connection oriented transport layer protocol the Stream Control Transmission Protocol (SCTP) inherits many of the features of the Transmission Control Protocol (TCP) including the mechanism by which Retransmission Timeout (RTO) is calculated. Previous investigations have established that the mechanism through which SCTP calculates RTO is inappropriate in Wireless LAN (WLAN) environments. This paper investigates the performance implications of changes to the SCTP RTO calculation mechanism. In particular alterations to the parameters α, the smoothing factor, and β, the delay variance factor are investigated. Results indicate that performance improvements are achievable through careful selection of α and β values. Throughput improvements of 63% over the default mechanism defined in RFC 4960 are described. These performance improvements however, while significant, still can not address the switchover delays which result from the distortions caused by continuously increasing RTT values in WLAN environments.
UR - http://www.scopus.com/inward/record.url?scp=51149108135&partnerID=8YFLogxK
U2 - 10.1007/978-0-387-84839-6_8
DO - 10.1007/978-0-387-84839-6_8
M3 - Conference contribution
AN - SCOPUS:51149108135
SN - 9780387848389
T3 - IFIP International Federation for Information Processing
SP - 95
EP - 108
BT - Wireless and Mobile Networking
A2 - Mammeri, Zoubir
ER -