Adaptive Congestion Control of mSCTP for Vertical Handover Based on Bandwidth Estimation in Heterogeneous Wireless Networks

Abstract

This paper proposes a new congestion control scheme of mobile Stream Control Transmission Protocol (mSCTP) for vertical handover across heterogeneous wireless/mobile networks. The proposed scheme is based on the estimation of available bandwidths in the underlying network as a cross-layer optimization approach. For congestion control of mSCTP, the initial congestion window size of the new primary path is adaptively configured, depending on the available bandwidth of the new link that a mobile node moves into. By ns-2 simulation, the proposed scheme is compared with the existing congestion control schemes in the throughput perspective. From the numerical results, we can see that the proposed mSCTP congestion control scheme could give better performance than the existing schemes in the wireless networks with an amount of background traffic.

A Survey of mSCTP for Transport Layer Mobility Management

“…mSCTP with bicasting bicasts [44] the data packets to old IP and new IP addresses in the vertical handover region to reduce the packet loss. Enhancement of mSCTP has been made [45] to reduce handover latency and packet loss rate by eliminating ASCONF delete chunk and introducing handover SACK to inform handover. Congestion control parameter update and buffer transmission was combined to avoid reduction of data rate and packet re-ordering.…”