一種基於多細胞縮放之綠能換手協定於雙層巨/毫微微網路

A Multi-Cell-Zooming-Based Green Handoff Protocol in Two-Tier Macrocell-Femtocell Networks

柳鈞譯(Chun-I Liu)

指導教授 ： 陳裕賢

國立臺北大學/電機資訊學院/通訊工程研究所/碩士(2013年)

摘要

毫微微蜂巢式基地台是一個可以提高網絡性能並且具有短範圍、低功耗和成本效益最佳化的小型基地台。本研究最大的目標是每一個毫微微蜂巢式基地台的發射功率必須是有效的被利用。因此在跨層巨/毫微微蜂巢式基地台的網路中，減少能源消耗就變成是非常重要課題。在此研究中，毫微微蜂巢式基地台合作調整自己的發送功率，以優化在每個毫微微蜂巢式基地台的總吞吐量。因此，我們讓周圍的毫微微蜂巢式基地台能放大自身的傳輸範圍來覆蓋睡眠中的毫微微蜂巢式基地台。除了協助合作調整自己的發送功率來覆蓋睡眠中的毫微微蜂巢式基地台，還可透過本研究來節省更多的發送功率。正因為如此，當毫微微蜂巢式基地台部署的非常密集時，此研究的優點就更加顯而易見。根據模擬結果，該研究可以提高毫微微蜂巢式基地台的能源利用效率，以彌補現有研究的不足之處。

關鍵字

毫微微蜂巢式基地台 ； 省電 ； 綠能 ； 細胞縮放

並列摘要

The femtocell is known as an enabler for the high data-rate transmission in future mobile ac-cess networks, due to its short-range, low-power, and cost-beneficial features. A major challenge in macro/femto-cell networks is however the efficient use of the transmission power. It is im-portant to reduce the energy consumption of the base stations for the green ICT (information and communication technology). Thus, the femtocell plays an important role to reduce the total ener-gy consumption in such a network environment. In this study, we propose a mul-ti-cell-zooming-based green handoff protocol in two-tier macrocell-femtocell network environ-ment. The main idea of the proposed protocol is to smartly enlarge the neighboring femtocells of given femto base stations (FBSs), while keeping the given femto base stations in the IDLE mode. The femto base stations can cooperatively ad-just their transmission powers to optimize the total power consumption and the impact of the transmission power on each femto base stations is addressed. Apart the neighboring femtocells can enlarge their power to keep the given femto base stations in the IDLE mode. The method also applied to power saving more transmission power. The advantage of the presented protocol is significant, especially when the deployment of femto base stations is dense. Performance results of the proposed one shown outperform than those of existing works.

並列關鍵字

Femtocell ； Power-Saving ； Green Communication ； Cell Zooming

參考文獻

[2] G.P. Fettweis, and E. Zimmermann, “ICT Energy Consumption – Trends and Challenges,” in Proc. of International Symposium on Wireless Personal Multimedia Communications (WPMC 2008), Lapland, Finland, September, 2008.

[7] Z. Niu, Y. Wu, J. Gong, Z. Yang, “Cell Zooming for Cost-Efficient Green Cellular Networks,” IEEE Communications Magazine, vol. 48, issue 11, pp. 74-79, November 4, 2010.

[10] A.D. Domenico, R. Gupta, and E.C. Strinati, “Dynamic Traffic Management for Green Open Access Femtocell Networks,” in Proc. of IEEE 75th Vehicular Technology Conference Spring (VTC 2012), Yokohama, Japan, pp. 1-6, May 6-9, 2012.

[11] B. Badic, T. Farrell, P. Loskot, and J. He, “Energy Efficient Radio Access Architectures for Green Radio: Large versus Small Cell Size Deployment,” in Proc. of IEEE 70th Vehicular Technology Conference Fall (VTC 2009), Anchorage, USA, pp. 1-5, September 20-23, 2009.

[14] L. Huang, Y. Zhou, J. Hu, X. Han, and J. Shi, “Coverage Optimization for Femtocell Clusters using Modified Particle Swarm Optimization,” in Proc. of IEEE International Conference on Communications (ICC 2012), Ottawa, Canada, pp. 611-615, June 10-15, 2012.