環型無線網狀網路之服務品質與功率效益之權衡

Trade-off of Power Efficiency and QoS in a Ring-based Wireless Mesh Network

楊勝閔(Sheng-Ming Yang)

指導教授 ： 黃建華

國立暨南國際大學/科技學院/電機工程學系通訊工程/碩士(2013年)

https://doi.org/10.6837/NCNU.2013.00028

摘要

無線網狀網 (WMN) 是一種經濟的解決方案來支持無處不在的寬帶服務。 在環狀式無線網狀網路中傳送功率影響了其重要的幾樣因子, 包括系統的吞吐量、 功率消耗及時間延遲。 然而功率效率與服務品質是相互衝突的目標, 因此本文探討的功率效率和服務品質 (QoS) 之多通道環狀式無線網狀網路之權衡。 我們提出一個簡單的頻率分配支持環狀式無線網狀網路服務品質的改善。 我們開發了一個實體層 (PHY)/媒體存取控制層(MAC) 的跨層分析模型來評估無線網狀網路的時間延遲、 抖動及吞吐量在考慮的載波偵聽多路訪問 (CSMA) 的 MAC 協議, 及在實體層中跳躍距離對傳輸速率的影響。 此外,混合整數非線性規劃的優化方法應用於確定最佳環的數量、 環的寬度及傳輸功率, 目的在對網狀細胞有時間延遲要求時最大功率效率。

關鍵字

功率效益 ； 時間延遲 ； 傳送功率 ； 傳送速率 ； 吞吐量分析

並列摘要

The wireless Ｍesh Ｎetwork (WMN) is an economical solution to support ubiquitous broad-band services.
The major factors include throughput, power consumption and delay are impacted by transmitted power in ring-based WMN. However, power saving and QoS may be contradictory goals.
Hence, this paper investigates the tradeoffs among power efficiency and quality-of-service (QoS) in multichannel ring-based WMN.
We suggest a simple frequency planning in the proposed ring-based WMN to improve the capacity with QoS support.
We develop a physical (PHY)/ medium access control (MAC) cross-layer analysis model to evaluate the delay, jitter and throughput of proposed WMN, by taking account of the carrier sense multiple-access (CSMA) MAC protocol, and the impact of hop distance on transmission rate in the PHY layer.
Furthermore, the mixed-integer nonlinear programming optimization approach is applied to determine the optimal number of rings, ring widths and transmit power, aiming at maximizing the power efficiency of a mesh cell subject to the delay requirement.

並列關鍵字

Power Efficiency ； Delay ； Transmission Power ； Transmission Rate ； Throughput Analysis

參考文獻

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