第三代行動通信（Third Generation Wireless Communications）的標準是由國際電信聯盟（International Telecommunication Union，簡稱ITU）規劃，希望能夠在第二代行動通訊的既有基礎之上，提供用戶高速率的數據傳輸、更有效地運用頻譜、行動商務服務、多媒體影音服務、及用戶可隨時透過無線終端設備進行個人通訊，並實現全球漫遊(Global Roaming)的終極目標等為發展的主要目標。
　　IMT-2000頻譜分配是1875MHz到1975MHz和2110MHz到2160MHz。考慮到包含在細胞到細胞交遞（cell-to-cell handoff）中的需求，傳輸速度的目標是固定不移動時2Mbps、行走或慢速移動時384Kbps和移動時144Kbps，在行動性方面，3G則較無線區域網路的表現為佳。
電信業者正致力於第三代(Third Generation，簡稱3G)無線通訊網路建設及發展所能提供的服務的同時，無線區域網路（Wireless Local Area Network，簡稱WLAN）發展的速度是如此令人刮目相看。
IEEE 802.11標準的制定與無線傳輸技術的成熟帶來市場的突破，面對行動資訊時代的來臨及網路媒體的多樣性，人們對於快速且可靠的數據傳輸需求與日俱增，在傳輸速率方面的表現，是以WLAN為優，因此本論文將對時下提供資訊行動化最熱門的無線網路技術，即第三代行動通信與無線區域網路服務作比較分析。
　　將由無線電技術及以成大校園為建置的主體所需要的成本二構面分析第三代行動通信及無線區域網路，並對未來的發展及市場提出個人看法及建議。

　　The standard of the third generation wireless communication was planned by International Telecommunication Union (ITU) and based on the second mobile communication 3G hope to provide users with high data transmission rate, mobile e-commerce, video streaming, multimedia service. Users can communicate through wireless equipments. In addition, it will raise the utilization of spectrum and realize the global roaming.
　　The frequency bands for IMT-2000 are form 1900MHZ to 1980MHz and from 2010MHz to 2179MHz. Considering the requirement of cell-to-cell handoff, the data rate is 2Mbps when stationary, 384kbps when walking or moving slowly and 144kbps when moving quickly. 3G has better performance than WLAN in mobility.
　　When telecommunication operators were focusing on the infrastructure and the services of 3G, WLAN was unbelievable to develop so fast.IEEE 802.11 standard and the technology of wireless transmission will grow the telecommunication market. Facing the coming of mobile service and the variety of internet multimedia, the necessities of high data transmission rate and security are increasing day by day. WLAN perform better in data transmission rate. Therefore, this thesis will discuss the comparison between 3G and WLAN which are the popular wireless network technologies today.
　　We will analyze the wireless technology and the cost of implementing the network of National Cheng Kong University and give some opinions and suggestions for the development in future.

【中文資料】
1.「第三代行動通信執照競價釋出整體規劃研究案」，日商野村總合研究所，行政院經建會委託研究，民國九十年二月二十七日。
2.林道燊，「我國無線區域網路發展現況」，台灣工業銀行產業研究報告，民國九十一年二月。
3.張正蔚，「行動網路系統業者之策略定位」，國立台灣大學商學研究所碩士論文，民國九十一年。
4.林政芳，「公眾無線區域網路服務之研究」，國立交通大學科技管理研究所碩士論文，民國九十一年。
5.高凱聲，「3G發展及執照發放之省思」，通訊雜誌81期，民國八十九年十月。
6.林傑斌、秦美惠、羅傑克，「WLAN＆行動通訊網路」，台北市：文魁資訊，民國九十二年。
7.鄭同伯，「WLAN無線網路系統剖析與應用」，台北縣：博碩文化，民國九十二年。
8.張志文, 陳名吉，「W-CDMA行動通訊系統」，台北市：全華圖書，民國九十二年。

【英文資料】
1.James D. Solomon, “Mobile IP, The Internet Unplugged,” Prentice Hall, 1997.
2.Jaseph C. Liberti, JR. and Theodore S. Rappaport, “Smart Antennas for Wireless Communications”, Pretice Hall, 1999.
3.Magnus Madfors, “High Capacity with Limited Spectrum in Cellular Systems,” IEEE Communications Magazine Aug. 1997.
4.Don Tapscott, David Ticoll, and Alex Lowy, “Digital Capital: Harnessing the power of business web,” 2001.
5.IEEE Standards for local and metropolitan area networks: Standard for port based network access control. IEEE Draft P802.1X, March 2001.
6.Heikki Kaaranen, AriAhtiainen, Lauri Laitinen, Siamak Naghian, Valtteri Niemi, “UMTS Networks Architecture, Mobility and Services,” John Wiley & Sons, 2001.
7.IEEE Standard 802.11-1999-Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications.
8.IEEE Standard 802.11a-1999-Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-speed Physical Layer in the 5 GHz Band.
9.IEEE Standard 802.11b-1999-Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-speed Physical Layer Extension in the 2.4 GHz Band.
10.IEEE Standard 802.11g-2003-Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Further Higher Data Rate Extension in the 2.4 GHz Band.
11.L. Hanzo, “OFDM and MC-CDMA for broadband multi-user communications, WLANs, and broadcasting,”John Wiley & Sons, 2003.

【網站資料】
1.http://www.find.com.tw
2.http://www.itu.int
3.http://www.nii.org.tw
4.http://www.ericsson.com
5.http://www.nokia.com
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7.http://www.dgt.gov.tw
8.http://www.chinatelecom.com.cn
9.http://www.agilent.com
10.http://www.ti.com.tw
11.http://iii.org.tw
12.http://www.3gpp.org
13.http://www.3gpp2.org