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首页> 外文期刊>IEICE Transactions on Communications >An Improved Power Saving Mechanism for MAC Protocol in Ad Hoc Networks
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An Improved Power Saving Mechanism for MAC Protocol in Ad Hoc Networks

机译：Ad Hoc网络中一种改进的MAC协议节能机制。

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摘要

Ad hoc networks have recently become a hot topic. In ad hoc networks, battery power is an important resource, since most terminals are battery powered. Terminals consume extra energy when their network interfaces are in the idle state or when they overhear packets not destined for them. They should, therefore, switch off their radio when they do not have to send or receive packets. IEEE802.11 features a power saving mechanism (PSM) in Distributed Coordination Function(DCF). In PSM for DCF, nodes must stay awake for a fixed time, called ATIM window (Ad-Hoc Traffic Indication Map window). If nodes do not have data to send or receive, they enter the doze state except for during ATIM window. However, ad hoc networks with PSM have longer end-to-end delays to deliver packets and suffer lower throughput than the standard IEEE802.11. To solve this problem, this paper proposes a protocol that reduces delay and achieves high throughput and energy efficiency. Simulation results show that our proposal outperforms other PSMs in terms of throughput, end-to-end delay and energy efficiency.
机译：自组织网络最近已成为热门话题。在ad hoc网络中，电池电量是重要的资源，因为大多数终端都是电池供电的。当终端的网络接口处于空闲状态或监听未发给他们的数据包时，它们会消耗额外的能量。因此，当他们不必发送或接收数据包时，应关闭无线电。 IEEE802.11在分布式协调功能（DCF）中具有省电机制（PSM）。在用于DCF的PSM中，节点必须保持唤醒状态固定的时间，称为ATIM窗口（即席流量指示图窗口）。如果节点没有数据要发送或接收，则它们将进入休眠状态，除了在ATIM窗口期间。但是，与标准IEEE802.11相比，具有PSM的ad hoc网络具有更长的端到端延迟来传递数据包，并且吞吐量较低。为了解决这个问题，本文提出了一种减少延迟并实现高吞吐量和能效的协议。仿真结果表明，我们的建议在吞吐量，端到端延迟和能效方面优于其他PSM。

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