关于ZigBee考勤的外文翻译.docVIP

南京工程学院 毕业设计(论文)外文资料翻译 原 文 题 目：An Evaluation Study of Mobility Support in ZigBee Networks 原 文 来 源： J Sign Process Syst (2010) 59:111–122 doi: 10.1007/s11265-008-0271-x 学 生 姓 名： 学 号： 所在院(系)部： 专 业 名 称： J Sign Process Syst (2010) 59:111–122 DOI:10.1007/s11265-008-0271-x An Evaluation Study of Mobility Support in ZigBee Networks Ling-Jyh Chen · Tony Sun · Nia-Chiang Liang Received: 13 April 2008 / Revised: 6 August 2008 / Accepted: 2 September 2008 / Published online: 16 October 2008 ? 2008 Springer Science + Business Media, LLC. Manufactured in The United States Abstract Based on the IEEE 802.15.4 LR-WPAN specification, the ZigBee standard has been proposed to interconnect simple, low rate, and battery powered wireless devices. The deployment of ZigBee networks is expected to facilitate numerous applications, such as home healthcare, medical monitoring, consumer electronics, and environmental sensors. For many of the envisioned applications, device mobility is unavoidable and must be accommodated. Thus, providing ubiquitous connections to/from a mobile device is crucial for various future ZigBee applications. Knowledge of how nodal mobility affects the ZigBee routing protocol is important, but the lack of ZigBee simulator support has limited the amount of research, evaluation, and development in this area. Thus far, researchers have been unable to analyze and evaluate the impact of mobile applications via extensive simulations. In this paper, our contribution is threefold. First, we present an initial implementation of the ZigBee network layer in NS-2, which will allow further research and development to be conducted in this area. Second, we analyze the adequacy of current provisions for dealing with different mobility cases. Third, we provide a comprehensive set of simulation results that demonstrate the inefficacy of the current standard