Stream-aware Scheduling to Improve Latency for Signaling Traffic using CMT-SCTP

Eklund, Johan,1966-Karlstads universitet,Institutionen för matematik och datavetenskap (from 2013),Distributed Systems and Communications Research Group (DISCO) (författare)

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.

Grinnemo, Karl-Johan,1968-Karlstads universitet,Avdelningen för datavetenskap,Distributed Systems and Communications Research Group (DISCO)(Swepub:kau)karlgrin (författare)
Brunström, Anna,1967-Karlstads universitet,Avdelningen för datavetenskap,DISCO(Swepub:kau)annabrun (författare)
Karlstads universitetInstitutionen för matematik och datavetenskap (from 2013) (creator_code:org_t)

Av författaren/redakt...: Eklund, Johan, 1 ...; Grinnemo, Karl-J ...; Brunström, Anna, ...

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