CASHeW: Cluster-based Adaptive Scheme for Multimedia Delivery in Heterogeneous Wireless Networks

Authors:
Hrishikesh Venkataraman;Poornachand Kalyampudi;Gabriel-Miro Muntean
Affiliations:
School of Electronic Engineering, Dublin City University (DCU), Dublin, Ireland and Dhirubhai Ambani Institute of Information and Communication Technology, Gandhinagar, India;Dhirubhai Ambani Institute of Information and Communication Technology, Gandhinagar, India;School of Electronic Engineering, Dublin City University (DCU), Dublin, Ireland
Venue:
Wireless Personal Communications: An International Journal
Year:
2012

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Abstract

Multimedia streaming over heterogeneous wireless networks has attracted significant interest in recent years from both telecom network operators and end users. However, the heterogeneity of the wireless network makes it very difficult to synchronize real-time multimedia streaming to different types of end-user devices across different wireless networks. In addition, with different delay and packet loss across different networks, multimedia delivery over the heterogeneous wireless networks cannot provide good quality streaming video. This paper proposes CASHeW--a novel cluster-based design with an in-built feedback-based adaptive mechanism that results in a higher video perceived quality in two-hop heterogeneous wireless network environments. CASHeW employs a proxy-client-server mechanism between the base station (BS) and the end-user; and importantly uses a quality-oriented adaptive scheme for efficient multimedia delivery. Simulation-based tests indicate that the performance of CASHeW not only outperforms transport layer adaptive delivery protocols like the TCP-Friendly Rate Control Protocol (TFRCP) and Loss Delay Adaptation (LDA+), but also is better than that of medium access control (MAC) layer protocols such as the Receiver Based Auto Rate (RBAR) and Enhanced Distributed Channel Access (EDCA) in terms of average perceived quality, average bit rate and loss rate.