Wireless Local Area Networks

... Wireless CommunicationsWireless Local Area Networks 2Objectives•Describe how WLANs are used•List the components and modes of a WLAN 3WLAN Applications Wireless networks are increasing ... freely roam between APs 18Summary•The wireless technology that attracts the most attention today –Radio frequency (RF) wireless local area networks (WLANs) Wireless NIC performs same fu...

Ngày tải lên: 13/09/2012, 10:52

... 9 Wireless Local Area Networks 9.1 Introduction The growth of Wireless Local Area Network (WLANs) commenced in the mid-1980s and was triggered ... for access to wired network Wireless Local Area Networks 243 Figure 9.4 WLAN topologies: ad hoc and infrastructure services that may be collocated in the geographical area in which the ad hoc WLAN ... included in the area...

Ngày tải lên: 29/09/2013, 21:20

... Wireless CommunicationsLow Rate Wireless Personal Area Networks 2Objectives•Describe a wireless personal area network (WPAN)•List the different WPAN ... ZigBee work•Describe the security features of low-rate WPAN technology 3What is a WPAN? Wireless personal area network (WPAN)–Group of technologies that are designed for short-range communications–Eliminates ... specification–...

Ngày tải lên: 13/09/2012, 10:52

... Wireless CommunicationsChapter 6High Rate Wireless Personal Area Networks Wireless# Guide to Wireless Communications 2Objectives•Define a high rate wireless personal area network ... area Wireless# Guide to Wireless Communications 15802.15.3 Network Topology (continued) Wireless# Guide to Wireless Communications 16802.15.3 Network Topology (continued) Wireless# Guide t...

Ngày tải lên: 13/09/2012, 10:52

... Wireless CommunicationsWireless Metropolitan Area Networks 2Objectives•Explain why wireless metropolitan area networks (WMANs) are needed•Describe the ... (WiMAX) 3What is a WMAN? Wireless metropolitan area networks (WMANs)–Provide wireless connectivity across a substantial geographical area such as a large city•WMANs primary goals–Extend wired networks beyond ... other...

Ngày tải lên: 13/09/2012, 10:52

... Wireless CommunicationsWireless Wide Area Networks 2Objectives•Describe wireless wide area networks (WWANs) and how they are used•Describe the ... telephone networks (continued)–Transmitters and cell phones operate at low power•Enables the signal to stay confined to the cell•Signal at a specific frequency does not go far beyond the cell area Same ... 1xRTT networks 18Third Ge...

Ngày tải lên: 13/09/2012, 10:52

... ĐẠI HỌC BÁCH KHOA HÀ NỘI KHOA ĐIỆN TỬ VIỄN THÔNG ––––––––––––––––– Computer Networks Seminar Đề tài : Wireless Local Area Network Sinh viên thực hiện : ĐỖ VIỆT THANH LÝ HOÀI NAM Lớp : ĐIỆN TỬ ... IEEE802.11g 6. XU THẾ PHÁT TRIỂN CỦA WLAN 3 1. TỔNG QUAN Mạng LAN không dây viết tắt là WLAN (Wireless Local Area Network), là một mạng dùng để kết nối hai hay nhiều máy tính với nhau mà...

Ngày tải lên: 01/09/2013, 10:30

... /?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 Date of Issue: 04-01-2001 CCNA Layer 2 Switching - Virtual Local Area Networks Lab Scenario by Leigh Anne Chisholm Introduction Preparing Your Switches Section ... 17 http://www.certificationzone.com/studyguides /?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 l Define the term "Virtual Local Area Network" or "...

Ngày tải lên: 19/10/2013, 02:15

... Development. Copyright ©2007 Global Knowledge T raining LLC. All rights reserved. Page 11 The Case for Virtual Local Area Networks (VLANs) 1-800-COURSES www.globalknowledge.com Expert Reference Series of White Papers Introduction In ... hub , networks became more crowded. A solution to the problem was necessary. Figur e 2. Hub-Based Twisted Pair Ethernet Ted Rohling, Global Knowled...

Ngày tải lên: 17/01/2014, 06:20