Network-Supported TCP Rate Control for the Coexistence of Multiple and Different Types of Flows on IP over PLC

Adriano MUNIZ  Kazuya TSUKAMOTO  Masato TSURU  Yuji OIE  

IEICE TRANSACTIONS on Communications   Vol.E96-B   No.10   pp.2587-2600
Publication Date: 2013/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E96.B.2587
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
power line communications (PLC),  TCP rate control,  multiple and different types of flows,  unfairness problem,  

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With the approval of IEEE 1901 standard for power line communications (PLC) and the recent Internet-enable home appliances like the IPTV having access to a content-on-demand service through the Internet as AcTVila in Japan, there is no doubt that PLC has taken a great step forward to emerge as the preeminent in-home-network technology. However, existing schemes developed so far have not considered the PLC network connected to an unstable Internet environment (i.e. more realistic situation). In this paper, we investigate the communication performance from the end-user's perspective in networks with large and variable round-trip time (RTT) and with the existence of cross-traffic. Then, we address the problem of unfair bandwidth allocation when multiple and different types of flows coexist and propose a TCP rate control considering the difference in terms of end-to-end delay to solve it. We validate our methodology through simulations, and show that it effectively deals with the throughput unfairness problem under critical communication environment, where multiple flows with different RTTs share the PLC and cross-traffic exists on the path of the Internet.