WiMAX INTRODUCTION

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WiMAX INTRODUCTION

• ????
• ???????
• ?????
• ??N9590001

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????

1. ???????????????,WiMAX?Wi-Fi????
2. ???,WiMAX???????,????002??
3. ???(2006),IEEE 802.16?WiMAX,????
4. ????(2005/08/01), WiMAX????? ,Taiwan.CNET.com?
5. ???(2005/02),WiMAX INTRODUCTION,http//studentweb.
   ncnu.edu.tw/94321544/htm/ppt/2005/file11-02.ppt?

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??????

• BS(Base Station,???),???????
• SS(Subscriber Station,???),???????,?????????????
• CPE(Customer Premise Equipment,??????),??????,???S
  S???????
• RS(Rely Station,???),?802.16j(Mobile Multi-hop
  Relay)??,???BS??,?????????
• PTP(Point to Point,?????),1?BS??1?SS?
• PMP(Point to Multiple,??????),1?BS?????SS?
• License Band?Un-License Band(License-Exempt),?????
  ????,???????????,??2.5GHz?3.5GHz,??????????,????,?
  ?????,??5.8GHz?
• LOS(Line-of-sight)?NLOS(Non-Line-of-sight),???????
  ???????,??????,???????????,????????

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What is WiMAX

• Worldwide Interoperability for Microwave
  Access??????????
• Wireless MAN(WMAN)
• Last Mile access
• ??????,??xDSL?Cable moden?????????,???WiMAX??????
  ????,?????????????????,?????????????????

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??WiMAX Forum

• WiMAX Forum?IEEE802.16???????
• ???????????????,??????????????????????????IEEE
  Wireless MAN???
• ?????440???,???125???,?????????????
• ?????
• Alcatel?ATT?????????(Fujitsu)?NOKIA?MOTO?Intel
  ?SAMSUNG ?LG,??????????????
• WiMAX Forum ?2005???The Year of WiMAX?

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??802.16??????
standard 802.16 802.16a 802.16-2004 802.16e
???? ?????(??????) ?????(??????) ?????(??????) ?????
???? Last Mile Backhaul Last Mile Backhaul Last Mile Backhaul Mobile Device
?? 1066GHz 211GHz 211GHz 26 GHz
???? LOS NLOS NLOS NLOS
???? 32134Mbps 75Mbps 75Mbps 15Mbps
???? QPSK?16QAM?64QAM QPSK?16QAM?64QAM (?256 Subcarrier OFDM) QPSK?16QAM?64QAM (?256 Subcarrier OFDM) QPSK?16QAM?64QAM (?257 Subcarrier OFDM)
??? ??? ??? ??? ???
???? 13 Mile 46Mile(??30Mile) 46Mile(??30Mile) 13 Mile
?1mile 1.6Km LOS (Line of Sight)
??????????
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??802.16??????(?)

• ????????,????3????
• IEEE 802.16c
• ??IEEE 802.16???,?????????1066GHz???IEEE
  802.16????????????????
• IEEE 802.16f
• ????IEEE 802.16??MAC???????????(MIB)??????????
• IEEE 802.16g
• ???IEEE 802.16?????????,????IEEE
  802.16??????????????????????????

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??IEEE 802.16??????

• ????Intel, 2004

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??IEEE 802.16????
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?? IEEE 802.16????(?)

• IEEE 802.16??????
• ????????
• ??????SCM?
• 1.??1066 GHz??????????
• 2.????????QPSK?16QAM?64QAM?
• ???????OFDM?
• 1.??211GHz??????????
• 2.????????OFDM?OFDMA???
• ????????
• 1.????(TDD)?
• 2.????(FDD)?

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?? IEEE 802.16????(?)

• IEEE 802.16?????

?? ??
256?FFT OFDM?? ??????LOS?NLOS???multipath?????
???????????????? 802.16????????64QAM?16QAM?QPSK?BPSK??????
??TDD?FDD???? ?????????????,??????,??????
???channel??(??3.5MHz?5MHz?10MHz?) ????????,??????????Frequence band???channel access???????
????????? 802.16?PHY????????????,?????????,?MIMO????????,????????????????
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?? IEEE 802.16????(?)

• IEEE 802.16?MAC???
• MAC???????
• 1.????(CSconvergence sublayer)?
• 2.MAC??????(CPScommon part sublayer)?
• 3.????(PSprivacy sublayer)?
• MAC??Qos??
• 1.UGS(Unsolicited Grant Service)?????????
• 2.rtPS(real time Polling Service)???????
• 3.nrtPS(non real time Polling Service)????????
• 4.BE(Best Effort)??????

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??? IEEE 802.16????(?)

• IEEE 802.16 MAC???

?? ??
TDM/TDMA???/???????,?????? ???????
?????????????? ????????,???????????
???? ???????QOS?????
QOS??????????????????????????????? ???,??????????(TDM????VoIP),???????
??????(ARQ) ARQ?????????ACK,????????????????
????modulation?? ???channel ????????????,??????
????? ??????
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??? Comparisons of Wireless communication
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??? Comparisons of Wireless communication
standard Transmit distance
PAN Bluetooth(IEEE 802.15.1) Ultra Wideband(IEEE 802.15.3) 110 M (UWB data rate??)
LAN Wi-Fi(802.11 a/b/g) 100M
MAN WiMAX (802.16) 50KM
WAN Mobile Fi(802.20) gtWiMAX
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???WiMAX??

• ?????????
• Wi-Fi (802.11n)
• 802.11b,802.11a,802.11g
• GPRS(3G), HSDPA(3.5G)
• ????
• WLAN
• ??,??
• Cellular Network
• ??
• WiMAX
• 802.16d, 802.19a, 802.16-2000 (???)
• 802.16e (?????)
• ??,??,??

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??? WiMAX??-??

• ISP??????(?????)
• ????
• Wi-Fi(806.11n)????
• WiMAX(802.16 - 2000)??????(????50??)
• ????
• ?Wi-Fi??????
• ?????????(FCC)???,??
• Wi-Fi 1100(??)
• WiMax 100,000(??)

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??? WiMAX??-??

• 802.11b 11Mbps
• 802.11a,802.11g 54Mbps
• 802.16a 75Mbps
• WiMAX??? ???????

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??? WiMAX??-??

• Wi-Fi WPA2???PEAP???AES??
• WiMAX 3DES?AES??,??EAP

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??? WiMAX?WiFi??
802.11 802.16 ????
???? ??300??(????????????) ??30??,???????4-6?? ??256 FFT???,802.16???????????????(??)802.11?64FFT
?? ??????,??? ?????????,???????? 802.16?????????,???????????,?????
???? ??LAN,????????????,?CPE??????????(20MHz) ????????????CPE,??CPE???????????channel access??,?1.5MHz?20MHz 802.11??MAC????CSMA/CA??,802.16?????TDMA
???? ??LAN,????????????,?CPE??????????(20MHz) ????????????CPE,??CPE???????????channel access??,?1.5MHz?20MHz 802.11???????????,???????802.16???????????,?????????
Bit ? 2.7bit/s/Hz 5bit/s/Hz,?20MHz?????100Mbit/s ????????????????????
QoS ?QoS?? QoS???MAC,????/????????? 802.11?????MAC(CSMA/CA),?????????802.11????TDMA?MAC,??????
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???WiMAX????

• ????
• ???????,?????????????????(????)
• ??????
• ???????????????
• ??,??,???
• ?????????
• ???????
• ???????

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?????WiMAX????
?? 700MHz 2.5MHz 3.5MHz 5.8MHz
???? ?? 2.32.5GHz 3.43.7G 5.725.85GHz(??)
?? ???????????,2010 ????? ????????,???? WiMAX??????,802.16e? ????? ????????? ???????,?????????, ?802.16d??
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??????WiMAX??????

• ??,??,??,??,?????????802.16????
• ???????????
• ???????????
• ???????????