Microsoft PowerPoint - WiMax
 | Name : Microsoft PowerPoint - WiMax File Type : Size : 668 KB |
WiMax Introduction 802.16 Standard for wireless metropolitan area networks (WMANs) Proposed to solve the "last-mile" problem High speed data rate (40Mbps) Long distance (over 10 km) High speed roaming (60km/h) Lower price of equipments IEEE Introduction Overlap Competitive (cont) with other technologies with lower-speed wired connections such as DSL and Cable Modem Provide faster data rate than current 3G enhancement or revision may offer speeds closer to WiMax 3G can support faster connections than Wi-Max but mobility is severely limited Wi-Fi may be used to provide a small faster connection region using WiMax as its backhaul Wi-Fi Introduction (cont) WiBro in Korea source - http://www.itu.int/ITU-D/imt-2000/documents/Busan/Session3_Yoon.pdf Security in WiMax WiMax (cont) has longer transmission distance which makes it more vulnerable than Wi-Fi However, security seems to be a serious problem in the early design Security in WiMax 802.16 It (cont) Authentication uses X.509 Certificate X.509 Certificate field: : Certificate version Serial Number : Uniquely defines certificate Signature : CA Signature Issuer : Identifies CA that issued certificate Validity : Beginning and ending dates of certificate Public key : Public key of Ebook Relate: certificate ebook wimax ebook security ebook speed ebook introduction ebook public key ebook 509 certificate ebook data rate ebook high speed ebook |
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