適應性陣列天線之無線網路下一個自適性的區塊配置策略

An Adaptive Area Allocation Strategy for Adaptive Antenna Array Wireless Networks

鍾東桓(Tung-Huan Chung)

指導教授 ： 陳忠信

朝陽科技大學/資訊學院/資訊與通訊系碩士班/碩士(2011年)

摘要

無線網路利用適應性陣列天線（adaptive antenna array；AAA）的架構，常被用來增加系統容量（traffic-carrying capacity）和提高服務品質。在AAA架構中，每個細胞包含數個天線(感測器)，並將細胞分割成數個扇形區塊，而這些扇形區塊將由天線來負責管理，並且每個天線包含數種範圍可調整。因此如何配置區塊給天線(感測器)將會影響整個系統容量。本論文提出一個有效的區塊配置策略，這個策略會考量各區塊之感測器的負載量再決定各感測器的管理範圍，其主要目的是讓基地台下的每個區塊彼此間承載的負載量之差異性最小、達到盡量平均的情況。最後從模擬結果顯示，我們的方法平均能降低固定式區塊配置策略30%以上的通話阻礙率、最大配置策略60%以上的通話阻礙率。我們提出的策略確實能大幅提升系統容量並達到負載平衡的效能。

關鍵字

無線網路 ； 適應性陣列天線 ； 系統容量 ； 負載平衡

並列摘要

Wireless networks that employ adaptive antenna array (AAA) have been proposed to increase the traffic-carrying capacity and circuit quality. In this architecture, each cell contains a several antennas (sensors) in the center that divides a cell into several areas, termed as sectors. Part of pyhical area of a sector is determined by the served antenna and it contains several possibilities. Therefore, the allocation of areas to sensors will affect the system capacity. This study will present an adaptive area allocation strategy of AAA wireless networks by scheduling the covered areas of sensors. This strategy considers the traffic loads among sensors to allocate the areas to sensors, and, therefore, the deviation of traffic loads of among sensors is minimal. Furthermore, the simulation results demonstrated this strategy can significantly improve system capacity by balancing the traffic loads among areas.

並列關鍵字

Wireless networks ； adaptive antenna array ； capacity scheduling ； load balance.

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