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研究生: 林育成
Yu-Cheng Lin
論文名稱: 嵌入式系統之低速率無線網路協定實現
Low-rate wireless network protocol implementation for embedded systems
指導教授: 王煥宗
Huan-Chun Wang
口試委員: 陳省隆
Hsing-Lung Chen
呂政修
Jenq-Shiou Leu
鄭瑞光
Ray-Guang Cheng
高典良
Tien-Liang Kao
王煥宗
Huan-Chun Wang
學位類別: 碩士
Master
系所名稱: 電資學院 - 電子工程系
Department of Electronic and Computer Engineering
論文出版年: 2019
畢業學年度: 107
語文別: 中文
論文頁數: 90
中文關鍵詞: 嵌入式系統802.11ah無線網路物聯網
外文關鍵詞: Embedded Systems, 802.11ah, Wireless network, IOT
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  • 本論文的主要目的是以IEEE P802.11ah/D10.0Draft Standard為目標,使用Xilinx Virtex6 FPGA開發板(xc6vlx240t/ff1156/-2),對802.11a/g網路通訊協定的嵌入式收發平台進行修改,加入802.11ah中的Target Wake Time與不同的協商方式,其一為在association procedure加入TWT IE來協商,另外則是在連線成功後傳送Setup Frame攜帶TWT IE來協商,以及Speed Frame Exchange。論文內容主要修改原架構中封包從CPU High到CPU Low的傳送過程,並且在軟體方面增加傳送端和接收端的功能以符合Speed Frame Exchange的規範。而在實體層方面,新增FPGA電路以實現TWT相關功能,並修改signal使得接收端能收到Speed Frame Exchange中所需要的參數,另外還修改了時間間隔和網路配置向量(NAV)的硬體電路,來完成Speed Frame Exchange的溝通。


    The main purpose of this thesis is to orientateIEEE P802.11ah/D1 0.0 Draft standard, and modify for the 802.11a/g network communication protocol with Xilinx Virtex6 FPGA board (xc6vlx240t/ff1156 / -2),.We implement the Target Wake Time,different way of negotiating TWT,one of the way is that negotiate TWT in the association procedure with TWT IE,the other one is that transmit setup frame with TWT IE to complete TWT negotiation,,and Speed Frame Exchange.In order to achieve our goal,we modify the packet transfer process from CPU High to CPU Low to change the original architecture processand add the behavior of transmitter and receiver in order to meet the specification of Speed Frame Exchange in terms of software.In terms of hardware we add hardware circuit to implement the features of TWT,and modify the signal,let receiver can receive the parameters which Speed Frame Exchange required,and also we modify the hardware circuit of time interval and NAV to achieve the Speed Frame Exchange.

    圖目錄 VI 第一章 緒論 1 1.1 研究背景 1 1.2 論文架構 2 第二章 802.11 ahTarget wake time & Speed frame exchange 3 2.1 TWT(Target Wake Time) 3 2.1.1 TWT Type 3 2.1.2 TWT Setup 4 2.1.3 TWT Infoemation Element 7 2.2 802.11ah Station 7 2.3 AP & STA Communication process 8 2.3.1 Scanning procedure 9 2.3.2 Association procedure 9 2.3.3 Active mode 10 2.4 Normal & NDP MAC Frame 10 2.4.1 Normal MAC Frame signal 11 2.4.2 NDP MAC frame signal 11 2.5 Speed Frame Exchange 14 2.5.1 ACK Indication 14 2.5.2 Speed Frame Exchange運用 15 第三章 系統架構 26 3.1 Xilinx Virtex6 FPGA系統硬體架構 26 3.1.1 TWT架構修改 27 3.2 軟體架構 32 第四章 AD9361介紹與TWT &Speed frame exchange硬體修改 34 4.1 AD9361 34 4.1.1 AD9361 SPI 34 4.1.2 AD9361 SPI Control Tx & Rx 36 4.2 SPI Control Circuit 36 4.3 TWT & TWT SP Counter電路 37 4.4 Tx Counter 38 4.5 時間間隔(IFS) 38 4.5.1 原時間間隔電路 38 4.5.2 時間間隔電路修改 39 4.6 Phy Tx& Rx signal 40 4.6.1 Phy Tx signal 40 4.6.2 Phy Rx signal 41 4.7 NAV 41 4.7.1 原NAV電路 42 4.7.2 NAV電路修改 42 第五章 TWT & Speed frame exchange軟體修改 44 5.1 TWT Setup 44 5.2 Speed Frame Exchange架構 46 5.2.1 origianl packet transfer process 47 5.2.2 packet transfer process modification 49 5.3 Speed Frame Exchange 程序 51 第六章 測試成果 57 6.1 uplink與downlink封包數量相同 58 6.2 uplink封包數量大於downlink封包 61 6.3 downlink封包數量大於uplink封包 64 第七章 結論及未來展望 67 參考文獻 .68 附錄 70 附錄A 程式碼移植 70 附錄B 模擬工具與平台 75 B.1 XPS 76 B.2 SDK 77 B.3 System Generator介紹 78 B.3.1 System Generator使用步驟 78

    [1] Wireless LAN Medium Access Control(MAC) and Physical Layer (PHY) Specifications Amendment 2: Sub 1 GHz License Exempt Operation, December 2016
    [2] Wireless LAN medium access control(MAC) and physicallayer(PHY)specifications, November 2012
    [3] Tony Adame , Albert Bel , Boris Bellalta , Jaume Barcelo and Miquel Oliver“The WIFI Approach For M2M Communications”, IEEE Wireless Communications, December 2014
    [4] Pranesh , Santosh Subedi , Goo-Rak Kwon , Jae-Young Pyun“Performance Analysis of Association Procedure In IEEE 802.11ah”, November 2015
    [5] Julio Cesar Araiza Leon“ Evaluation of IEEE802.11ah Technology for Wireless Sensor Network Applications”, March 4th 2015
    [6] Byeong Gi Lee, Sunghyun Choi “Broadband wirelss access and local network:Mobile WIMAX and WIFI”,May 2008
    [7] Evgeny Khorov , Andrey Lyakhov , Alexander Krotov , Andrey Guschin“ A survey on IEEE 802.11ah:An enabling networking technology for smart cities”, March 2015
    [8] AD9361_Reference_Manual_UG-570
    [9]AD9361_Register_Map_Reference_Manual_UG-671
    [10] NDP Probing,
    [11] Xilinx, DS747, LogiCORE IP AXI INTC (v1.03a), Data Sheet , at: https://www.xilinx.com/support/documentation/ip_documentation/axi_intc/v1_03_a/ds747_axi_intc.pdf , 2012
    [12] Xilinx PG079 LogiCORE IP AXI Timer v1.03a, Product Guide at:
    https://www.xilinx.com/support/documentation/ip_documentation/axi_timer/v1_03_a/pg079-axi-timer.pdf. Accessed 7 June 2017.
    [13]TSX-3225_datasheet at: https://www.alldatasheet.com/view.jsp?Searchword=Tsx-3225%2520datasheet&gclid=CjwKCAjwsdfZBRAkEiwAh2z65h_1qF5mzvBi08Ns7smWdQZe9piWA5rMBK_U5EYSvezilpOWpLJKmhoCLNsQAvD_BwE
    [14]http://warpproject.org/trac/
    [15]https://www.techdesignforums.com/practice/technique/rapid-prototyping-for-the-802-11-era/

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