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

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and faculties can use their NB’s to access the Internet everywhere on campus. This wireless network follows the IEEE 802.11 standard and covers major buildings and most public areas. Figure 5-1[70]. The department which is in charge of FSUWIN is OTC (Office of Telecommunications and Networking). It is also responsible for maintenance and network security. The first wireless network at FSU was started in 1999, and at that time it was only an experimental network. There was no plan for building a campus-wide network. In 2002, OTC got the funding they needed to install the wireless network at FSU. The goal is to provide an indoor/outdoor wireless public network for all students and faculty. [147] 5.1.2. Implementation Figure 5-1 The Coverage of FSU Wireless Network The reason why FSU used WLAN to extend the campus network instead of wired LANs is because it is cheaper and more flexible. The implementation was started from upgrading the existing wired network. The construction and installation were conducted in two parts. First part was Building-to-Building Connectivity (Bridges), and second part was Intra-Building Connectivity (AP). [70] Table 5-1 shows the basic information of FSUWIN. Part I contains three phases. In phase I, the goal was to install wireless network equipment in 6 buildings and support 89 users. The operators took 4 buildings and created two domains in two connectivity points of the FSU network. After creating these two domains, the network could simply be enlarged by adding additional buildings into each domain. The operators also 62
increased bandwidth, fixed connectivity issues, and hid antennas through upgrading in this phase. The total cost was within $6,000 but if using fiber, it would cost at least $10,000. [70] In phase II, the operators tracked the outside campus usage and wanted to install wireless network to these small groups or departments. They located the outside campus connections. The goal was to renovate these networks in the FSU extended campus. After evaluating these connections, the operators found out that they could establish connections to these places wirelessly and retrieved many modem lines. Eventually, the operators removed 37 dial-up connections in 5 buildings and then they had more dial-up resources for other users. These buildings used hubs to connect each PC and then used wireless bridges/gateway to connect back to main campus network. In the middle, there is no wired network; it is totally wireless. [70] In this last phase, operators added 8 additional buildings into the FSU wireless network. The problems of these buildings were that they were either too far away from campus (1.5 miles away) or too expensive to install fiber for each user (spanned city street). By applying the wireless solution, the operators spent around 15,000 dollars without recurring costs or permits. [70] The Building-to-Building Connections covered 19 buildings with 207 users and 22 bridges. (Document in 09/2006) [70] Part II contained two phases and mainly focused on the inner connections of a building. In phase I, the operators estimate the areas on the campus where the WLAN was highly needed. These places included three libraries and Student Union. The Student Union is a place where vendors are and students and employees hand-out together. [70] Phase II was to help the departments which requested an intra-building network to install and setup the FSUWIN network. The process included implementation, integration, optimization and installation. They would make sure the departments did not have any problems when using the WLAN. For achieving maximum efficiency, the operators not only installed and maintained the network, but also evaluated future extensions for the departments. The installation process is documented for future improvement. The departments which have FSUWIN service are the College of Law, Registrar’s Office, College of Business, School of Social-Work, and Mathematics. (Document in 09/2006)[70] The APs and switches used by FSUWIN are produced by many different companies, such as Vivato Networks, Xirrus and Foundry Networks. The technology details are shown in figure 5- 6[145], figure 5-7[146] And figure 5-8[71]; table 5-2[145], table 5-3[146] and table 5-4[71]. Comparing the Vivato solution to regular AP, it is easy to find that Vivato has longer coverage and could support more users. In the survey “Vivato Switch Evaluation”[70], there are five scenarios had been defined: Fisher, Landis, Shores, Sliger and Stadium. This survey shows that only 1 or 2 pieces of Vivato equipment are needed to cover an area. In the scenario one, Fisher Lecture Hall takes 6 regular APs, three at each side, to cover the whole area, but the Vivato 63
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THE FLORIDA STATE UNIVERSITY COLLEG
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TABLE OF CONTENTS List of Tables…
Page 5 and 6:
5. Case study…………………
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LIST OF FIGURES Figure 2-1 The Evol
Page 9 and 10:
LIST OF ABBREVIATIONS Abbreviation
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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 and 18:
2.1. Introduction CHAPTER TWO 2. 3G
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2.3. Development 3G has been in dev
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
Page 71 and 72: Figure 4-7 Coverage and Capacity fo
Page 73: CHAPTER FIVE 5. Case study This cha
Page 77 and 78: Figure 5-3 Landis Green Figure 5-4
Page 79 and 80: Table 5-2 Xirrus XS-3700 AP Technol
Page 81 and 82: • Automatic Tx power selection
Page 83 and 84: Table 5-4 Cont. 71
Page 85 and 86: 5.1.3. Analysis The FSU wireless ne
Page 87 and 88: since the January 2006. The populat
Page 89 and 90: Table 5-5 Parameters of WLAN and Me
Page 91 and 92: Table 5-6 Features of Nortel Wirele
Page 93 and 94: • -101 dBm typical @ 1 Mbps Recei
Page 95 and 96: Operating environment specification
Page 97 and 98: uilding density, high population de
Page 99 and 100: epeater r is developping and it wil
Page 101 and 102: Figure 5-17 WiBro Features The data
Page 103 and 104: Figure 5-19 U-RAS Premium Figure 5-
Page 105 and 106: In KT’s recent report, 60% of sub
Page 107 and 108: Figure 5-21 An Example Application
Page 109 and 110: Name Parameters Standard Table 5-10
Page 111 and 112: WiFly used Wi-Fi to cover 60% of th
Page 113 and 114: BIBLIOGRAPHY [01]. IEEE 802.11 offi
Page 115 and 116: [37]. Sun, Y.; "Bandwidth-efficient
Page 117 and 118: [88]. Mineno T.; Babji T.,"Issues a
Page 119 and 120: [117]. Yun Z.; Yuguang F., "Securit
Page 121 and 122: Network Operations and Management S
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