Abstract
With the diversified wireless network access technology and large-scale equipment of multinetwork interface devices expanding, network transmission performance for multi-homed terminals has been widely concerned by academic circles. More and more scholars have paid attention to Multipath Transmission Control Protocol (MPTCP) as one of the representative methods for studying path transmission performance. However, their studies ignore the impact of dynamic network environments on data transmission performance and seldom consider the priority of data transmission. Undoubtedly, not prioritizing packets will have a dramatic effect on the users experience in the heterogeneous networks. In this paper, we propose a novel priority-aware streaming media multipath data scheduler mechanism (PO-MPTCP) to achieve the following goals: (1) detecting the priority of all streaming media data; (2) achieving multiattribute-aware path evaluation and switching mechanism; (3) introducing a path-quality priority-driven data distribution mechanism to improve streaming multipath transmission performance. The simulation experiment shows that PO-MPTCP proposed by this paper improves the transmission performance of streaming media and reduces the transmission delay. For the result of simulation experiment, it is easy for us to find that PO-MPTCP is more efficient in data delivery than the standard MPTCP mechanism.
Highlights
Under the background of establishment of various wireless access technologies (i.e., WiFi, 4G, Bluetooth, etc.), the number of mobile terminals equipped with several different standard network interfaces is increasing year by year
Due to the growing demands for bandwidth requirement and transmission rate requirement of real-time streaming applications (i.e., Facebook [2], WeChat [3], YouTube [4], etc.), traditional single-path Transmission Control Protocol (TCP) [5] cannot utilize the characteristics of the terminals multinetwork interfaces; the Internet Engineering Task Force (IETF) proposes Multipath TCP (MPTCP) to be compatible with the current application layer based on traditional TCP [6, 7]
This paper presents PO-MPTCP which is a priorities-aware packet scheduler solution for multimedia multipathing services
Summary
Under the background of establishment of various wireless access technologies (i.e., WiFi, 4G, Bluetooth, etc.), the number of mobile terminals equipped with several different standard network interfaces is increasing year by year. Multi-homed devices can use multiple network interfaces to transmit data in parallel, effectively improving network transmission throughput [1]. By adopting a multi-homing structure, MPTCP is considered to be a promising transmission technology, which can meet the requirements for specific Quality of Services (QoS) and balance real-time task utilization rate in network resources [9, 10]. Inspired by the above considerations, this paper presents a priorities-oriented data scheduler for multimedia multipathing mechanism that allows applications to distinguish the relatively prioritized data, ensure higher-priority data can be transmitted via a good quality path, improve the transmission performance of higher-priority data, reduce the transmission delay, and enhance the overall transmission performance for real-time streaming media services.
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