EcoFlock: 支援微小型無線感測平台參與多元化通訊協定網路之群體換手機制

EcoFlock: A Clustered Handoff Control Scheme for Ultra-Compact Wireless Sensor Platforms in EcoPlex Network

李至玄(Chih-Hsuan Lee)

指導教授 ： 周百祥

國立清華大學/電機資訊學院/資訊工程學系/碩士(2009年)

https://doi.org/10.6843/NTHU.2009.00649

摘要

本論文提出一項支援微小型感測平台漫遊(Roaming)於無線感測網路中的群體換手(Clustered Handoff)機制，名為EcoFlock。群體的概念意味著一群固定在相同物體上的感測器，擁有相似的環境背景，便可以視為同一群體，而且感測器支援群體特色並不會對自己本身造成過度的負擔。同一個群體中的感測器可以利用群體式換手機制而更快速的漫遊於整個網絡中，相較於基本的序列式換手機制(Serialized Handoff)，達到更好的效果。EcoPlex是一個讓簡單的感測平台能夠漫遊且無縫式參與多元特色、無線的點對點傳輸網路的一個基礎架構系統。EcoFlock延伸自EcoPlex並實作群體式換手機制的可行性。實驗結果顯示出，EcoFlock擁有快速的換手時間、很短的運算與傳輸時間，以及很高的資料傳輸率，並且在這些優點之下，並不會增加感測平台的複雜度。

關鍵字

無線感測網路 ； 換手 ； 群集 ； 輕量的 ； 資料傳輸率

並列摘要

EcoFlock is a clustered handoff control scheme for supporting roaming of ultra-compact sensor nodes
in wireless sensor networks (WSNs). Cluster features are intended for a group of nodes that may be
mounted on the same object without overburdening. Nodes in the same cluster can perform clustered
handoff to achieve faster roaming compared to the baseline of serialized handoff. We demonstrate the
feasibility of this idea by extending EcoPlex, an infrastructure system that enables simple wireless
platforms such as Eco nodes to roam and participate seamlessly in a feature-rich, wireless ad hoc
network. Experimental results show EcoFlock to be efficient for fast handoff time, low latency and
high data throughput with minimal node complexity.

並列關鍵字

WSN ； Handoff ； Cluster ； Lightweight ； Data Throughput

參考文獻

[1] AKYILDIZ, I. F., XIE, J., AND MOHANTY, S. A survey of mobility management in nextgeneration all-ip-based wireless systems. Wireless Communications, IEEE 11, 4 (Aug. 2004),

[3] ATALAH, K., MAC`I AS, E., AND SU`AREZ, A. A proactive horizontal handover algorithm based

[4] BELLAVISTA, P., CORRADI, A., AND GIANNELLI, C. Adaptive Buffering-Based on Handoff Prediction for Wireless Internet Continuous Services. 2005, pp. 1021–1032.

[5] CHEN, C.-J., AND CHOU, P. Ecodaq: A case study of a densely distributed real-time system for high data rate wireless data acquisition. In Embedded and Real-Time Computing Systems and Applications, 2008. RTCSA ’08 14th IEEE International Conference on (Aug 2008), pp. 427–

[6] CHEN, M.-C., CHEN, J.-L., AND YAO, P.-C. Efficient handoff algorithm for bluetooth networks. vol. 4, pp. 3884–3889 Vol. 4.