Cooperative QoS Control Scheme Based on Scheduling Information in FiWi Access Network
Cooperative QoS Control Scheme Based on Scheduling Information in FiWi Access Network
复制标题
DOI：
10.1109/tetc.2013.2278699
复制
发表时间：
2013-08
影响因子：
5.9
通讯作者：
Z. Fadlullah;Hiroki Nishiyama;Y. Kawamoto;H. Ujikawa;Ken-ichi Suzuki;N. Yoshimoto
中科院分区：
文献类型：
--
作者：
Z. Fadlullah;Hiroki Nishiyama;Y. Kawamoto;H. Ujikawa;Ken-ichi Suzuki;N. Yoshimoto
由无线局域网（WLAN）和无源光网络（PON）组成的光纤无线（FiWi）接入网络最近在未来的网络物理系统（CPS）中引起了广泛关注。由于智能手机和传感器等智能设备的爆炸式增长，此类设备的数量也急剧增长，这些设备需要实时通信，要求以服务质量（QoS）为中心的CPS应用程序，例如构建智能社会的智能电网、医疗和交通控制系统。为了应对这种情况，FiWi 接入网络可能是一个合适的选择，因为它们能够提供宽带宽和灵活性。然而，将本质上不同的网络技术的WLAN和PON结合到FiWi中会导致WLAN和PON交汇点的数据传输效率低下。因此，实时通信的QoS显着下降。在本文中，我们针对 FiWi 网络中涉及 QoS 下降的问题，提出了一种基于 WLAN 和 PON 协作的 QoS 控制方案。通过基于计算机的模拟，我们证明了我们提出的方案可以显着提高 CPS 的 FiWi 接入网络的 QoS 性能。
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). Because of 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. 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. Therefore, 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 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.