A Proposal of QoS-aware Power Saving Scheme for SDN-based Networks
A Proposal of QoS-aware Power Saving Scheme for SDN-based Networks
复制标题
基于SDN网络的QoS感知节能方案的提出
DOI：
10.1109/nbis.2015.15
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
T. Takata
中科院分区：
文献类型：
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作者：
S. Sasaki;Kanayo Ogura;B. B. Bista;T. Takata
由于互联网用户和智能手机等通信设备的增加，互联网流量日益迅速增加。为了处理网络流量，路由器和交换机等网络设备不断增加，导致网络功耗显着。特定地点/国家的互联网流量在一天的不同时间和一周的不同日期会发生波动。然而，网络设备被配置为充分运行，无论它们是空闲还是充分利用。许多研究人员提出了一些方案，通过在网络设备的利用率低于某个阈值时将其链路或设备本身置于睡眠状态来降低网络设备的功耗。然而，这些方案在使设备或链路进入睡眠状态时没有考虑流量的类型和QoS。值得注意的是，链路速率越低，消耗的能量就越少。在本文中，我们不是让设备或链路进入睡眠状态，而是降低链路的速率，以节省能源并满足流量的 QoS。我们区分实时和非实时两种类型的流量。我们维护实时流量的最短路径传输 (QoS)，并在需要时重新路由非实时流量以降低链路速率。仿真结果表明，我们可以降低网络设备的功耗，同时保持流量的QoS。
The amount of Internet traffic is increasing rapidly day by day due to increase in Internet users and communication devices such as smart phones. In order to handle network traffic, network devices such as routers and switches are being added steadily causing significant power consumption by the network. Internet traffic at a particular place/country fluctuates in different time of a day and different day of a week. However, network devices are configured to operate fully whether they are idle or fully utilized. Many researchers have proposed schemes to reduce power consumption by network devices by putting their links or devices themselves to sleep when their utilization is less than a certain threshold. However, the schemes do not consider the types and QoS of traffic when putting the devices or links to sleep. It has been noted that lower the rate of a link, the lesser it consumes energy. In this paper, instead of putting devices or links to sleep, we reduce the rate of links in order to save energy as well as satisfy the QoS of the traffic. We distinguish two types of traffic Real-Time and non-Real-Time. We maintain the shortest path delivery (QoS) for Real-Time traffic and reroute non-Real-Time traffic if needed to reduce the rate of a link. The simulation results have shown that we can reduce the power consumption by network devices and at the same time maintain the QoS of the traffic.