Introduction n WPAN Wireless Personal Area Network n

無線網路概論 Introduction n WPAN (Wireless Personal Area Network) n WLAN (Wireless Local Area Network) n WWAN (Wireless Wide Area Network) n

Network Area Definitions Abstracted Personal Operating Space WAN-MAN PAN MAN-LAN LAN-PAN Pico-Cell ~50 km ~2 km 0 km ~10 m

Introduction n IEEE Project 802 develops Wireless LAN, MAN and PAN standards, mainly for the lowest 2 layers (PHY & MAC) of the Reference Model for Open Systems Interconnection (OSI).

Introduction IEEE 802 LAN/MAN Standards Committee … … … 802. 11 Higher Layer … Wireless Local … LAN Protocols Area Network Working Group TG 1 WPAN/Bluetooth Task Group TG 2 Coexistence Task Group 802. 15 Wireless Personal Area Network Working Group TG 3 WPAN High Rate Task Group … 802. 21 Media Independen t Handoff Working Group TG 4 WPAN Low Rate Task Group

IEEE 802 Groups Hibernating Working Groups 802. 17 802. 2 802. 6 802. 3 802. 18 802. 4 802. 7 802. 11 802. 19 802. 5 802. 8 802. 15 802. 20 802. 9 802. 14 802. 16 802. 21 802. 10 Active Working Groups and Study Groups 802. 12 Disbanded Working Groups and Study Groups

IEEE 802 Groups 802. 1 Higher Layer LAN Protocols Working Group 802. 3 Ethernet Working Group 802. 11 Wireless LAN Working Group 802. 15 Wireless Personal Area Network (WPAN) Working Group 802. 16 Broadband Wireless Access Working Group 802. 17 Resilient Packet Ring Working Group 802. 18 Radio Regulatory TAG 802. 19 Coexistence TAG 802. 20 Mobile Broadband Wireless Access (MBWA) Working Group 802. 21 Media Independent Handoff Working Group

Industrial, Scientific, and Medical (ISM) bands Short Wave Radio AM Broadcast Audio FM Broadcast Infrared wireless LAN Television Cellular (840 MHz) NPCS (1. 9 GHz) Extremely Very Low Medium High Very Ultra Super Infrared Visible Ultra- X-Rays Low High Light violet 902 - 928 MHz 26 MHz 2. 4 - 2. 4835 GHz 83. 5 MHz (IEEE 802. 11 b) 5 GHz (IEEE 802. 11 a) Hyper. LAN 2

IEEE 802. 15. 1(Bluetooth)

IEEE 802. 15 IEEE 802 LAN/MAN Standards Committee … … … 802. 11 Higher Layer … Wireless Local … LAN Protocols Area Network Working Group TG 1 WPAN/Bluetooth Task Group TG 2 Coexistence Task Group 802. 15 Wireless Personal Area Network Working Group TG 3 WPAN High Rate Task Group … 802. 21 Media Independen t Handoff Working Group TG 4 WPAN Low Rate Task Group

Scope Personal Operating Space WAN-MAN PAN MAN-LAN LAN-PAN Pico-Cell ~50 km ~2 km 0 km ~10 m

IEEE 802. 15. 1 Bluetooth What is it?

Bluetooth 的網路連結方式 2. Scatternets • 兩個以上Piconets 可形成 Scatternet • 不同Piconet 可以分享 同一 裝置

Bluetooth and Internet 電話線、乙太網 路 寬頻網路、ADSL n 連接Bluetooth與Internet n n 藍芽上網家 <Blue. Port> n Via Access point Via mobile phone Via PSTN phone

Bluetooth-Applications Headset Profile Reference: http: // www. ericsson. com/

Bluetooth-Applications (Cont. ) Profiles- Personal Area Networking(PAN) Profile應用 規範了兩個以上的藍芽裝置如何形成ad-hoc Networking (如視訊會議)，也可透過似Network Access Point的裝置 達遠端上網的目的。 n

Wireless LAN

IEEE 802. 11 Sublayers Higher Layers 802. 11 d 802. 11 e 802. 11 h 802. 11 i 802. 11 c 802. 11 f MAC PHY 802. 11 a 802. 11 b 802. 11 g

IEEE 802. 11 WLAN Standards Logical Link Control Connection-less Service Connection Service MAC PHY Point Coordination Function (PCF) Distributed Coordination Function (DCF) 2. 4 GHz 5 GHz 2. 2 GHz 2. 4 GHz Infrared DSSS OFDM FHSS DSSS Data Rates 1 Mbps and 2 Mbps IEEE 802. 11 5. 5 and 11 Mbps 6, 9, 12, 18, 24, 36 , 48, 54 Mbps 802. 11 b 802. 11 a

IEEE 802. 11 b n n n 直接序列展頻 (DSSS) 使用頻帶在 2. 4 GHz~2. 4835 GHz 傳送速率: 1 , 2, 5. 5, 11 M bits/s 傳輸距離約 100 m Two modulation mode: --CCK (Complementary Code Keying) ---PBCC (Packet Binary Convolutional Coding)

IEEE 802. 11 g n n n 802. 11 g 是 802. 11 a及802. 11 b的結合 使用頻帶為 2. 4 GHz~2. 4835 GHz Four modulation mode: ERP( Extended Rate Physicals)DSSS/CCK ERP ( Extended Rate Physicals) OFDM ERP ( Extended Rate Physicals) -PBCC DSSS-OFDM

IEEE 802. 11 a n n n 高資料傳輸率 (54 Mbps) 應用於具有高品質的多媒體傳輸, 如 DVD 高頻寬 (20 MHz). 使用頻帶於 5. 725~5. 85 GHz 使用正交分頻多 (Orthogonal Frequency Division Multiplexing, OFDM)的技術 傳輸距離約 50 m

Data Rate 802. 11 b 802. 11 g 802. 11 a Max. Speed 11 Mbps 54 Mbps Modulation OFDM & CCK OFDM CCK Frequencies 2. 4 -2. 497 GHz 5 GHz band GHz Approval July 1999 June 2003

產品簡介 n n 無線網卡 作站 n n Station (STA) PCMCIA Type II PCI 存取點 n Access Point (AP) AP+IP分享器 AP

Applications for Wireless LAN n 室內應用(Indoor) SOHO (Small Office Home Office) 辦公室 公共場所 n 室外應用(Outdoor) 無線專線 戶外漫遊

GSM Standard Parameter (E-)GSM 900 GSM-1800 (DCS, PCN) GSM-1900 (PCS) Frequency Range (Uplink) 890 - 915 MHz E-GSM: 880 - 890 Mhz 1710 - 1785 MHz 1850 - 1910 MHz Carrier Spacing 200 k. Hz Duplex Spacing 45 MHz 95 MHz 80 MHz

附加服務 n n 短訊 (Short Message Service, SMS) WAP

WAP(Wireless Application Protocol) n 目的 n n n 讓手機用戶可以利用手機上網瀏覽網站 GSM-based initially 1998: WAP 1. 0, 2001: WAP 2. 0 Client Encoded Request WAE User Agent Web Server WAP Gateway Encoders and Decoders Encoded Response Request Response CGI Scripts, etc. Content

4 G (B 3 G) n n Seamless interoperability between networks Multifunction handsets WLAN + 3 G in same terminal ALL-IP (core network)