A comparison of wi-fi and wimax with case studies - Florida State ...

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R99 was introduced in 1999 and could support 64 kbps circuit switching payload and up to 2Mbps packet switching payload. It is also compatible with GSM and GPRS services. The core network structure has two layers, Circuit Switch Layer and Packet Switch Layer. Circuit Switch Layer used GSM network and Packet Switch Layer used GPRS network. R99 inherited services and features of GSM and GPRS. The commercialized WCDMA network in the world are all based on this WCDMA Release 99 version. [69] R4 was finalized in March 2001. Comparing with R99, the network structure did not change. The most different parts were in interface setup and functions improvements. One major change was in MSC (Mobile Switching Center). R4 split it into two parts MSC service and MGW (Media Gateway). The idea behind this was to separate control and payload. The other major change was introducing IP transmission to Circuit Switch Layer. R4 is an important step to All IP network. [69] R5 was stopped upgrading in September 2002. It is a starting point of all-IP network of WCDMA network. R5 supports IP transmission and services. The most important component of R5 was IMS (IP Multimedia Subsystem). This subsystem can provide multimedia service based on the Internet. It is the bridge to integrate cellular system and the Internet. [69] 2.2.2. CDMA2000 CDMA2000 is the trade mark of TIA-USA (Telecommunication Industry Association) and which developed by 3GPP2. There were several versions of CDMA, CDMA2000 1X, CDMA2000 1X EV-DO. [69][142][143] The evolution direction was the same with WCDMA, All IP network. Therefore, in CDMA- LMSD (Legacy MS Domain), the separation of control and payload was introduced. There are four phases in the CDMA2000 evolution. In phase 0, the main issues were to improve the present system. In phase 1/2 were to upgrade the system to become the All IP network system. In phase 3, the All IP network was formed and MMD (Multimedia Domain) started to show in the system. [69] 2.2.3. TD-SCDMA This standard was individually developed by China and co-work with 3GPP. Future development is still ongoing. [69] [144] 6
2.3. Development 3G has been in development for couple years already. During this period of time, the telecommunication industry almost crashed in Europe. 3G is a promising technology, but the over-expectation made the European telecommunication industries spend too much money on the license of band operation, set up infrastructures and marketing. The result was that many companies cannot recoup their profits, and many of them had to give up the license and projects in order to lower the debt or litigate with government. These facts caused the development of 3G slowed down greatly in Europe. The most successful case in Asia is Japan. There are two companies running the business, NTT DoCoMo and KDDI. The NTT DoCoMo uses WCDMA and KDDI uses CDMA2000. Taiwan initialed the 3G service in 2005. In North America 3G is in sprout stage. Around the world, there are total 29 countries has 3G network so far. Figure 2-1 shows the evolution steps of 3G. [69][77] Figure 2-1 The Evolution of 3G The popularization of 3G has several factors, such as the user’s habits, market positioning, applications, and infrastructures. 3G has two opponents which are Wi-Fi and WiMax. They could be partners or enemies and it all depends on applications and market positioning. These wireless standards have their own advantages. 3G has bigger coverage and support mobility, but has lower data rate, and Wi-Fi has higher data rate, but smaller coverage and does not support 7
Page 1 and 2: THE FLORIDA STATE UNIVERSITY COLLEG
Page 3 and 4: TABLE OF CONTENTS List of Tables…
Page 5 and 6: 5. Case study…………………
Page 7 and 8: LIST OF FIGURES Figure 2-1 The Evol
Page 9 and 10: LIST OF ABBREVIATIONS Abbreviation
Page 11 and 12: PSS Portable Subscriber Station 89
Page 13 and 14: CHAPTER ONE 1. Introduction The cel
Page 15 and 16: Table 1-1 Cont. 802.3an 2006 10GBAS
Page 17: 2.1. Introduction CHAPTER TWO 2. 3G
Page 21 and 22: 2.5. Conclusion WAP (Wireless Appli
Page 23 and 24: IEEE 802.11n is the newest standard
Page 25 and 26: Table 3-3 Cont. 10 2.457 X Y Y Y Y
Page 27 and 28: 3.3.1.2. PLCP and PMD The physical
Page 29 and 30: Noise Codes). The most powerful con
Page 31 and 32: Figure 3-5 CCK Modulation HR-DSSS P
Page 33 and 34: other problem is inter-carrier inte
Page 35 and 36: Tab ble 3-5 OFDDM Modulaation and D
Page 37 and 38: and contains DSSS, CCK, PBCC (Packe
Page 39 and 40: 3.3.2. MAC Layer 3.3.2.1. Introduct
Page 41 and 42: Virtual channel sensing he other me
Page 43 and 44: SIFS (Short InterFrame Spacing) Fig
Page 45 and 46: Figure 3-20 WEP Frame and Operation
Page 47 and 48: 3.4.2. MIMO (Multiple-Input/Multipl
Page 49 and 50: 4.1. The background of IEEE 802.16
Page 51 and 52: The working groups of WiMax Forum a
Page 53 and 54: Table 4-1 Thee Basic Datta of IEEE
Page 55 and 56: Figure 4-1 The Layer Structure of I
Page 57 and 58: codes ( (CTC) and low densityy pari
Page 59 and 60: 4.3.1.2.2. AAS (Advanced Antenna Sy
Page 61 and 62: Best-effort service (BE) This schem
Page 63 and 64: Encryption Figure 4-4 PKM Protocol
Page 65 and 66: 4.3.2. IEEE 802.16e-2005, the newes
Page 67 and 68: transmiission, the aadjacent cellls
Page 69 and 70:
the uplink bandwidth periodically f
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Figure 4-7 Coverage and Capacity fo
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CHAPTER FIVE 5. Case study This cha
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increased bandwidth, fixed connecti
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Figure 5-3 Landis Green Figure 5-4
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Table 5-2 Xirrus XS-3700 AP Technol
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• Automatic Tx power selection
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Table 5-4 Cont. 71
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5.1.3. Analysis The FSU wireless ne
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since the January 2006. The populat
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Table 5-5 Parameters of WLAN and Me
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Table 5-6 Features of Nortel Wirele
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• -101 dBm typical @ 1 Mbps Recei
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Operating environment specification
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uilding density, high population de
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epeater r is developping and it wil
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Figure 5-17 WiBro Features The data
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Figure 5-19 U-RAS Premium Figure 5-
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In KT’s recent report, 60% of sub
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Figure 5-21 An Example Application
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Name Parameters Standard Table 5-10
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WiFly used Wi-Fi to cover 60% of th
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BIBLIOGRAPHY [01]. IEEE 802.11 offi
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[37]. Sun, Y.; "Bandwidth-efficient
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[88]. Mineno T.; Babji T.,"Issues a
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[117]. Yun Z.; Yuguang F., "Securit
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Network Operations and Management S
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