Stream-aware Scheduling to Improve Latency for Signaling Traffic using CMT-SCTP
2016 (English)Conference paper (Refereed)
To mitigate delay spikes during transmission ofbursty signaling traffic, concurrent multipath transmission(CMT) over several paths in parallel could be an option. Still,unordered delivery is a well known problem when transmittingover asymmetric network paths, leading to extra delay due toHead-of-Line Blocking (HoLB). The Stream Control TransmissionProtocol (SCTP) is designed as a carrier for signaling trafficover IP to reduce the impact of HoLB. SCTP has support fortransmission of separate flows, called SCTP streams. SCTP iscurrently being extended with support for CMT (CMT-SCTP). Inthis paper, we address sender scheduling to optimize latency forsignaling traffic over CMT-SCTP. We present dynamic streamaware(DS) scheduling, which utilizes the SCTP stream concept,and continuously considers the current network status as well asthe data load to make scheduling decisions. We implement a DSScheduler and compare it against a dynamic path (DP) schedulerthat does not consider streams. Our investigation shows that DSscheduling could significantly reduce latency compared to a DPscheduler.
Place, publisher, year, edition, pages
Research subject Computer Science
IdentifiersURN: urn:nbn:se:kau:diva-43499OAI: oai:DiVA.org:kau-43499DiVA: diva2:941316
Swedish National Computer Networking Workshop (SNCNW 16) Sundsvall 1-2 juni