arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1005.4013cs.NI
收藏

无线传感器网络中传感器寿命增强技术综述

Sensors Lifetime Enhancement Techniques in Wireless Sensor Networks - A Survey

Sami Halawani, Abdul Waheed Khan

摘要:

无线传感器网络基本上用于收集智能环境所需的信息,但它们在无人值守的情况下特别有用,其中地形,气候和其他环境限制可能会阻碍有线/传统网络的部署。与传统网络不同,这些传感器网络没有连续的电源。相反,各个传感器是电池供电的,并且各个传感器的寿命以及因此整个网络在很大程度上取决于这些传感器的占空比。对无线传感器网络的分析表明,通信模块是消耗传感器能量最多的部分,这就是为什么节能是主要的优化目标。由于路由协议和MAC协议直接访问通信模块,因此这两个域的协议设计应考虑节能目标。在本文中,我们讨论了不同的国家的最先进的协议,在MAC和路由域已提出的无线传感器网络,以实现延长网络寿命的总体目标。无线传感器网络中的路由协议通常分为三组-以数据为中心,分层和基于位置的,但我们只关注前两类,因为基于位置的路由协议通常需要有关传感器位置的先验知识,大多数时候是不可用的,由于随机部署的传感器。然后,我们将讨论如何基于调度和基于竞争的MAC协议可以有助于实现有限的能源资源的最佳利用,避免或减少冲突的机会,从而需要重传。

英文摘要:

Wireless Sensor Networks are basically used for gathering information needed by smart environments but they are particularly useful in unattended situations where terrain, climate and other environmental constraints may hinder in the deployment of wired/conventional networks. Unlike traditional networks, these sensor networks do not have a continuous power supply at their disposal. Rather the individual sensors are battery operated and the lifetime of the individual sensors and thus the overall network depend heavily on duty cycle of these sensors. Analysis on WSNs shows that communication module is the main part which consumes most of the sensor energy and that is why energy conservation is the major optimization goal. Since routing protocols and MAC protocols directly access the communication module therefore the design of protocols in these two domains should take into account the energy conservation goal. In this paper, we discuss different state-of-the-art protocols both in MAC and routing domains that have been proposed for WSNs to achieve the overall goal of prolonging the network lifetime. The routing protocols in WSNs are generally categorized into three groups - data centric, hierarchical and location-based but we focus on only the first two categories because location-based routing protocols generally require a prior knowledge about sensors location which most of the times is not available due to random deployment of the sensors. We then discuss how schedule-based and contention-based MAC protocols can contribute to achieve optimal utilization of the limited energy resource by avoiding or reducing the chances of collisions and thus the need for retransmission.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑