A taxonomy and survey of SCTP research
ACM Computing Surveys (CSUR)
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Nowadays, it is not rare that a mobile node equips multiple interfaces such as Ethernet, 802.11b, mobile phones and WiMAX. A node with multiple interfaces has the possibility to utilize the multiple network accesses for robust and effcient communication. However, TCP can handle only a single IP address per connection. Hence, applications that uses TCP can not utilize multiple network access fully. The Stream Control Transmission Protocol(SCTP) is a new transport protocol which is receiving attention as the successor of TCP. One of the advanced features of SCTP is multi-homing, which allows an endpoint to have more than one IP address for switchovers to be transparent to higher layers. In this paper, we focus on issues in SCTP multi-homing and propose a new framework that enhances this feature to realize smooth switchover. By estimating the condition of each networks, such as delay or loss-rate, our framework enables SCTP to use the best address that meets users' requirements. Since our framework will be useful for delay-sensitive or loss-rate sensitive applications in multihomed environments, it will be suitable for applications in mobile environments.