省電在無線網路中一直都是一項重要的課題，特別是在第三代 (3G) 無線通訊系統更是如此；因為新一代的高速資料傳輸服務預期將會使手機的電池急劇消耗。此篇論文中，我們呈現了WCDMA (3GPP所採取之無線接取技術) 及cdma2000 1x EV-DV (3GPP2所採取之無線接取技術) 在數據傳輸時的節電模式與連線管理之詳細比較。除此之外，除了性質上的比較之外我們也提供了數據上量化的比較。為了分析，我們提出了一個新的分析模型來計算與估計在不同的網路流量模型 (traffic model) 底下手機傳輸所消耗的能量；手機的能量的消耗以及手機重新連結網路的延遲（reconnection latency）也因此得以量化。我們特別針對bursty (non-real-time) 以及streaming (real-time) 這兩種未來在第三代無線通訊系統中主要的網路流量做了關於能量消耗的討論與分析。此外，透過模擬(simulation)，我們驗證了在這篇論文所提出的數學分析模型。我們針對了WCDMA及cdma2000在資料傳輸時的耗電做了效能上的分析和比較。最後，我們修改並延伸了在其他論文中所提出之效能分析模型，並且提出一個新的測量效能的參數－節電係數(energy saving factor)來計算與評估整個無線通訊系統的效能。最後，基於上述的研究我們還發現節電機制對於通道佔用時間的分佈會產生影響；我們還透過實驗來驗證我們的發現，基於此一發現我們提出了在高速封包交換數據傳輸底下節電機制對於"等效通道佔用時間"的分佈之分析。這篇論文提供了對於節電機制對於第三代行動通訊系統之效能影響詳細的討論。

Energy conservation is essential to wireless networks, especially for third generation (3G) systems, because the high-speed data transmission would rapidly exhaust the energy of a mobile station (MS). This paper presents details of energy saving models and session management in two major standards, namely 3GPP and 3GPP2. Furthermore, the analytic comparison of energy consumption in cdma2000 1x EV-DV and WCDMA systems is provided. A novel model of analysis is proposed to evaluate the energy consumption under different traffic models. Energy consumption and reconnection latency during packet data
transmission are therefore quantiÞed. Bursty and streaming data trafÞc are studied in relevance to consumption efÞciency. The analytic model is veriÞed through extensive simulation. A Comparative analysis of the performance of energy consumption in cdma2000 and WCDMA is provided. Furthermore, we demonstrate our observation of the impact of the energy saving techniques on the channel holding time of packet data service in WCDMA

and cdma2000. Based on this observation, we provide the analysis and modeling of effective channel holding time of high speed packet data service.

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