Notebook 、Tablet PC，PDA、手機等各種手持式產品資訊家電（Information Appliances）或資訊產品未來具備有無線網路功能將是不可避免的趨勢，唯有透過無線網路才讓這些產品的方便性展露無遺。在眾多無線區域網路協定標準之中IEEE 802.11系列標準是目前最普遍的，其中定義媒介存取控制層(Medium Access Control Layer)和實體層(Physical Layer)。
在本篇論文我們設計並實作出一個具有AMBA相容無線區域網路媒介存取控制soft IP( Intellectual Property)。此soft IP是可適用於平台架構設計為基礎的SoC晶片中，其具有相容802.11標準、具有彈性可重複使用等特性，支援Buffer Descriptors ，內建DMA Controllers、Interrupt等功能。在此soft IP與Host system的溝通介面部分，提供了與AMBA Bus system相容的匯流排介面。與實體層的溝通方面，提供了與WLAN 的基頻處理器通訊的介面。

It is a future trend to include the function of wireless networking in portable electronic devices, such as notebooks, tablet PC, PDA, mobile phone, and other information applicants. IEEE 802.11 is the most popular wireless LAN protocol that defines the functions in the medium access control (MAC) layer and physical layer.
In this thesis, we design and implement a flexible and reusable soft IP (Intellectual Property) for wireless MAC that is compatible with AMBA system and can be used in SOC applications. The wireless MAC supports buffer descriptors, interrupt and DMA. The IP provides an AMBA-compatible interface for the host system bus, and provides a communication interface for the baseband processor in the physical layer.

摘要 ii
Abstract ii
Acknowledgements iii
Table of Contents iv
List of Figures vii
List of Tables ix
Chapter 1 論文簡介 1
1.1 研究動機 1
1.2 研究目標 2
1.3 論文組織 2
Chapter 2 簡介IEEE 802.11 3
2.1 IEEE 802.11兩種類型基本架構 5
2.2 MAC 通訊協定 6
2.2.1 Coordination Function 6
2.2.2 訊框優先權 8
2.2.3 Binary exponential Back off algorithm 8
2.2.4 虛擬載波偵測 10
2.3 IEEE 802.11 訊框格式 12
2.3.1 各式訊框型態之格式 14
2.4 Wired Equivalent Privacy Algorithm 16
2.4.1 WEP缺失 18
2.4.2 改進 19
2.5 相關研究 20
Chapter 3 AMBA-Based WLAN系統架構 23
3.1 AMBA 24
3.1.1 Advanced High-performance Bus Overview 24
3.1.2 ARM Peripheral Bus Overview 26
3.2 WLAN MAC系統架構與元件 27
3.2.1 傳輸模式 28
3.2.2 接收模式 29
Chapter 4 WLAN MAC架構 31
4.1 Bus Interface Unit 33
4.1.1 TxBIU模組 33
4.1.2 RxBIU模組 35
4.1.3 RegBIU模組 35
4.2 Timers單元 37
4.3 RxMAC單元 41
4.4 TxMAC單元 43
4.5 Registers與IRQ模組 44
4.5.1 IRQ 44
4.5.2 Registers 模組 46
4.6 Advanced Encryption Standard 47
4.7 PHY Interface單元 50
Chapter 5 晶片實作 52
5.1 驗證環境 52
5.1.1 測試介面控制器 54
5.1.2 測試檔產生器 55
5.2 驗證項目 56
5.3 合成結果 57
Chapter 6 結論與未來展望 59
Bibliography 60

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