Cooperative QoS Control Scheme based on Scheduling Information in FiWi Access Network

Abstract

Fiber-Wireless (FiWi) access networks comprising
Wireless Local Area Networks (WLANs) and Passive Optical
Networks (PONs) have attracted much attention recently for
future Cyber-Physical Systems (CPSs). Due to the explosive
growth of smart devices such as smart phones and sensors,
the number of such devices has also grown phenomenally that
require real time communication demanding Quality of Service
(QoS)-centric applications for CPSs, such as smart grid, medical,
and traffic control systems, which construct smart society. In
order to deal with such situations, the FiWi access networks
may be a suitable choice since they are capable of providing
both wide bandwidth and flexibility. However, combining the
WLAN and PON in FiWi that are inherently different networking
technologies leads to inefficient data transmission in the point
of junction of the WLAN and PON. As a consequence, the
QoS of real time communication degrades significantly. In this
paper, we address this problem involving QoS degradation in
the FiWi networks, and propose a QoS control scheme, which is
based on the cooperation between the WLAN and PON. Through
computer-based simulations, we demonstrate that our proposed
scheme can significantly improve the QoS performance of the
FiWi access networks for CPSs.

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