wimax技術發(fā)展趨勢(已修改)
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【正文】 Copyright 169。 NDSL, Chang Gung University. Permission required for reproduction or display.WiMAX技術發(fā)展趨勢 :過去、現(xiàn)在與未來Outline? Background? IEEE Standardization and WiMAX Forum? WiMAX Systems Protocols Overview? Introduction to IEEE IEEE – Usage models– Work plane and documents– Requirements evaluation methodology– Network architecture reference model? Advanced features challenges of IEEE ? Next Wave Technologies in WiMAX2 NDSLab Copyright2023Wireless Standards? 4 main usage segments are specified– Range, Power, …Source：拓墣產業(yè)研究所， WII3 NDSLab Copyright2023WiMAX on the Path of Fixed/Mobile ConvergenceFixedMobileWill Convergence WiFi WCDMA (WiMAX)Spectrum , (Unlicensed) Around 2GHz (Licensed)2~11, 10~66 GHz(Licensed, Unlicensed)Channel Access Contentionbased Scheduled ScheduledBit Rate Up to 54Mbps Up to 2Mbps Up to 75 MbpsMobility Fixed, Portable Mobile Fixed, Portable, MobileModulation Scheme CDMA, OFDM CDMA OFDM, OFDMATypical Communication Range100s meters 10s kilometers 10s kilometers4 NDSLab Copyright2023Deployment of WiMAX ServiceSource: WiMAX Forum/Siemens? Backhaul Feeding– Pointtopoint link for fixed infrastructure? Fixed Wireless Access– Wireless local loop for hotspot feeding? Nomadic Access– CPEs in hotzone access the service directly? Portable/Mobile Access– Handover function enabling mobile data feeding5 NDSLab Copyright2023Why WiMAX?Even having Sprint win, WiMAX is still a midterm to longterm technology6 NDSLab Copyright2023Outline? Background? IEEE Standardization and WiMAX Forum? WiMAX Systems Protocols Overview? Introduction to IEEE IEEE – Usage models– Work plane and documents– Requirements evaluation methodology– Network architecture reference model? Advanced features challenges of IEEE ? Next Wave Technologies in WiMAX7 NDSLab Copyright2023Background of IEEE ? 1998: IEEE 802 SG on “Broadband Wireless Access” (BWA) (Prof. Roger B. Mark, Chair, IEEE WG, Jan. 2023)? 1999: 1st IEEE Project– Scope: PHY and MAC layer of the air interface of interoperable fixed pointtomultipoint broadband wireless access systems. The specification enables transport of data, video, and voice services. It applies to systems operating in the vicinity of 30 GHz but is broadly applicable to systems operating between 10 and 66 GHz.8 NDSLab Copyright2023IEEE Standards +1066GHz PHY211GHz PHYConformanceRevisionMobilityRevisionLicense ExemptMultihop RelayMIB (fixed) (mobile)Management10GHz PICS10GHz RCT10GHzTSS TP11Ghz PICSCoexistenceManagement Coexistence ConformanceAir Interface: finalized and published: under development GenerationWiMAX2Consolidate9 NDSLab Copyright2023? WiMAX Forum– WiMAX: Worldwide Interoperability for Microwave Access– Formed in Apr 2023, by Intel, Proxim, Airspan, Fujitsu, etc.– 500+ members including Intel, RS, Alvarion, Wavesat, PicoChip, Sony, Samsung, Nokia, TI, ADI, III, ITRI, etc.? Major Missions– To promote deployment of BWA by using a global standard and certifying interoperability of products and technologies.– Develop baseline test specs, to facilitate the global interoperability of products and technologies– Support IEEE standards? WiMAX Product Certification– CPE: Wavesat, Airspan, Siemens, …– BS: Aperto, Redline, Sequans, Airspan, Siemens, …– Preparing for plianceWiMAX ForumTWGTechnicalCWGCertificationNWGNetworkSPWGService ProviderRWGRegulatoryAWGApplicationEWGEvolutionaryGRWGGlobal roamingMWGMarketing10 NDSLab Copyright2023WiMAX Forum Certification? WiMAX equipments are certified by WiMAX Forum after passing the certification tests of WFDCL (WiMAX Forum Designated Certification Laboratory)? Certification process includes Radio Conformance Test (RCT), Protocol Conformance Test (PCT), and Interoperability Test (IOT)? 46 CPEs and 35 BSs have been certified by WiMAX Forum (due Dec. 2023)CPEWFDCLBS全球市場11 NDSLab Copyright2023Plugf
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