Dynamic chunk adjustment for prioritized SCTP video streaming in heterogeneous WLAN and UMTS networks

Authors:
Tsang-Ling Sheu;Chia-Ming Tu
Affiliations:
National Sun Yat-Sen University, Kaohsiung, Taiwan Roc;National Sun Yat-Sen University, Kaohsiung, Taiwan Roc
Venue:
IWCMC '07 Proceedings of the 2007 international conference on Wireless communications and mobile computing
Year:
2007

Citing 3
Cited 1

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A new method to support UMTS/WLAN vertical handover using SCTP

IEEE Wireless Communications
Policy-based QoS-management architecture in an integrated UMTS and WLAN environment

IEEE Communications Magazine

A taxonomy and survey of SCTP research

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Abstract

SCTP (Stream Control Transmission Protocol) has demonstrated its scalability and flexibility in multiplexing multiple video streams into a single association as compared to other transport layer protocols. Yet in a single SCTP association, it lacks the QoS provision of prioritized multimedia streams with different requirements. This paper therefore presents a dynamic chunk adjustment for SCTP (DC-SCTP) in supporting multiple prioritized video streams in a heterogeneous WLAN and UMTS network. The proposed DC-SCTP not only allows us to specify different bit rate requirements for prioritized multimedia streams in a single association, but it also offers the "de-association" capability to minimize the unnecessary channel wastage, when a mobile node moves into a UMTS network from a WLAN. Simulation performed on NS-2 demonstrates the effectiveness and the advantages of our proposed DC-SCTP schemes over the original SCTP.