臺灣博碩士論文加值系統

無線技術越來越發達，免執照頻帶 (unlicensed band) 上的應用數之不盡，相對使得無線資源變得更貧乏。在FCC開放未使用的類比電視頻道後，各大研究紛紛轉向執照頻帶 (licensed band) 的使用。ECMA組織制訂的ECMA-392，其應用在家庭電子設備、網路存取、或是多媒體影音串流等等，除此之外還有電子電機工程師學會制訂的IEEE 802.11af及IEEE 802.22兩套標準，都是操作於TV white space的執照頻帶。
本論文實作上使用EstiNet網路模擬器開發ECMA-392，觀察並驗證ECMA-392之MAC層及PHY層的各項程序之正確性及頻道使用率的改善，在ECMA-392白頻帶裝置尚未普遍使用之前，供各家廠商觀察各種網路拓樸並最佳化各種效能參數，也期望提供此平台後，能讓後人可以針對ECMA-392進行更進一步的研究及發展。

As wireless technology is continuously growing and many different kinds of applications are running on the unlicensed bands, wireless resource is becoming scarce. After Federal Communications Commission (FCC) opens up lightly-used TV spectrum, many researchers have started to study the usages of licensed bands. The ECMA standard body has released the ECMA-392 standard that can be applied to home electronics equipment, internet access, and high speed video streaming. In addition to ECMA-392, the IEEE standard body has released IEEE 802.11af and IEEE 802.22 standards. All of these standards operate on the TV white space.
In this thesis, we use the EstiNet network simulator to implement ECMA-392 specification, and validate the correctness of the procedures defined at the MAC layer and PHY layer of ECMA-392. Before the ECMA-392 TV white space devices are available for experiments, researchers of ECMA-392 can use the developed tool to simulate different types of network topology and optimize ECMA-392 performances.

目錄
目錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
第二章 背景 2
2.1 TV white space 2
2.2 IEEE 802.22 3
2.3 ECMA-392 5
2.3.1 Superframe structure 5
2.3.2 MAC layer 6
2.3.3 PHY layer 7
第三章 文獻探討 8
第四章 系統設計與實作 10
4.1 EstiNet平台介紹 10
4.2 TV primary user模擬 14
4.3 ECMA-392 相關節點 14
4.4 ECMA-392 MAC層實作 15
4.4.1 Superframe structure 16
4.4.2 MAC frame format 17
4.4.3 Information element 18
4.4.4 Network Entry procedure 19
4.4.5 Initial channel SCAN procedure 20
4.4.6 Master-slave join beacon group 21
4.4.7 In-service channel monitor 22
4.5 ECMA-392 PHY層實作 23
4.5.1 Channel frequency and numbering 24
4.5.2 PPDU 24
4.5.3 Device requirement 25
第五章 模擬結果驗證 26
5.1 TV primary user行為模擬 26
5.2 Simulation case 1 (無PU模擬) 28
5.3 Simulation case 2 (有PU，撤離channel模擬) 31
5.4 Simulation case 3 (merge group模擬) 35
5.5 Simulation case 4 39
5.6 Channel Utilization和Throughput 驗證 41
第六章 未來展望 47
第七章 結論 48
參考文獻 49

[1] Television frequency table, available at http://www.csgnetwork.com/tvfreqtable.html
[2]國家通訊傳播委員會 (National Communications Commission，NCC), available at http://hdtv.ncc.gov.tw/index.aspx
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http://insidedigitalmedia.com/understanding-tv-band-white-spaces/
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[5] IEEE 802.22 WG on WRANs (Wireless Regional Area Networks), http://www.ieee802.org/22/.
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[20] The OPNET modeler, available at http://www.opnet.com
[21] EstiNet network simulator and emulator. available at http://www.estinet.com/
[22] ECMA-392: MAC and PHY for Operation in TV White Space, Ecma International Standard, 2nd edition, June 2012, http://www.ecma-international.org/publications/standards/Ecma-392.htm